Transverse moving type erecting device and method for prefabricated small box girder of double-layer bridge with narrow top and wide bottom

Abstract

The invention provides a transversely-moving type erecting device and method for a small prefabricated box girder of a double-layer bridge with a narrow upper portion and a wide lower portion, and the transversely-moving type erecting device and method for the small prefabricated box girder of the double-layer bridge with the narrow upper portion and the wide lower portion comprise a transversely-moving bridge erecting machine erected on the upper layer of the double-layer bridge and further comprise two transversely-moving devices. The two transverse moving devices are oppositely arranged on two adjacent lower-layer cover beams of the small prefabricated box girder to be erected; the transverse moving device comprises a plurality of bottom supports, transverse moving rails are arranged on the tops of the bottom supports, and a three-way pushing mechanism used for installing the lower-layer side prefabricated small box girder is arranged on the tops of the transverse moving rails. Through the combination of the two transverse moving devices which work cooperatively and the transverse moving bridge girder erection machine, the lower-layer prefabricated small box girder with the width exceeding that of a conventional lower-layer prefabricated small box girder can be effectively installed, the technical problem of synchronous erection of the upper-narrow-lower-wide double-layer prefabricated small box girder is successfully solved, it is guaranteed that the upper-layer small box girder and the lower-layer small box girder can be synchronously and safely installed, and meanwhile, the overall structure is simple, and cost is low. And the construction efficiency is effectively improved.

Description

Technical Field

[0001] The present invention relates to the field of bridge engineering, and in particular to a transverse movement type erection device and method for precast small box girders of a double-deck bridge with a narrow upper part and a wide lower part. Background Art

[0002] There are mainly two methods for the erection of traditional double-deck precast small box girders: (1) The asynchronous erection method for the upper and lower layers, that is, after the construction of the lower-layer column cap beams, the lower-layer precast small box girders are erected, then the upper-layer columns and cap beams are constructed, and finally the upper-layer precast small box girders are erected; (2) The synchronous erection method for the upper and lower layers, that is, the upper and lower-layer columns and cap beams are constructed first, and then the lower-layer precast small box girders and the upper-layer precast small box girders are erected. Since the clear distance between the upper-layer cap beams is greater than the length of the precast small box girders, it is necessary to use a high-low crane to erect the lower-layer precast small box girders.

[0003] However, during the construction process, the asynchronous erection method for the lower layer needs to wait for the erection of the lower-layer box girders before the upper-layer column cap beams and box girders can be constructed, with low construction efficiency. If the upper and lower layers are constructed in a flow manner, at least two sets of bridge erection machines and related equipment need to be invested, with a large investment and high construction costs. The synchronous erection method for the upper and lower layers is only applicable to the erection of precast small box girders of double-deck bridges with equal width or a wide upper part and a narrow lower part. Therefore, an erection device and method for precast small box girders of a double-deck bridge with a narrow upper part and a wide lower part are proposed to solve the above problems. Summary of the Invention

[0004] The main purpose of the present invention is to provide a transverse movement type erection device and method for precast small box girders of a double-deck bridge with a narrow upper part and a wide lower part, so as to solve the problem of double-layer synchronous erection of precast small box girders of a double-deck bridge with a narrow upper part and a wide lower part.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is: a transverse movement type erection device and method for precast small box girders of a double-deck bridge with a narrow upper part and a wide lower part, including a transversely movable bridge erection machine erected on the upper layer of the double-deck bridge, and further including two transverse movement devices, which are oppositely arranged on two adjacent lower-layer cap beams of the precast small box girders to be erected; The transverse movement device includes a plurality of bottom supports, a transverse movement track is arranged at the top of the bottom support, and a three-way jacking mechanism for installing the lower-layer side precast small box girders is arranged at the top of the transverse movement track.

[0006] In a preferred solution, the three-way jacking mechanism includes two vertical and longitudinal adjustment mechanisms and a transverse jacking mechanism slidably arranged at the top of the transverse movement track, and a connecting cross beam is arranged between the two vertical and longitudinal adjustment mechanisms.

[0007] In a preferred solution, the transverse movement track is composed of two combined I-beams, and a plurality of locking holes are arranged at the top of the connection between the two I-beams.

[0008] In a preferred embodiment, the lateral pushing mechanism includes a lateral pushing oil cylinder. The telescopic end of the lateral pushing oil cylinder is connected to one of the vertical and longitudinal adjustment mechanisms. Multiple sliding seats that are in sliding contact with the transverse movement track are arranged at the bottom of the lateral pushing oil cylinder. First L-shaped limiting blocks that are buckled with the edge of the I-beam are connected to both ends of the sliding seat. A support seat is further arranged at the tail end of the lateral pushing oil cylinder. A locking bolt is arranged on the support seat. The end of the locking bolt can freely penetrate through the support seat and be inserted into any one of the locking holes. The locking bolt is a telescopic cylinder.

[0009] In a preferred embodiment, the vertical and longitudinal adjustment mechanism includes a box body whose bottom is in sliding contact with the transverse movement track. Second L-shaped limiting blocks that are buckled with the edge of the I-beam are arranged at two opposite edges of the bottom of the box body. Deviation correction holes are arranged on two opposite side walls in the longitudinal direction of the box body. Longitudinal limiting grooves are arranged at the bottoms of the two side walls. A longitudinal sliding seat is in sliding contact with the inner bottom wall of the box body. Limiting steps that are in sliding fit with the longitudinal limiting grooves are arranged at two edges of the longitudinal sliding seat. A vertical jacking oil cylinder is arranged at its top. Longitudinal deviation correction oil cylinders are arranged on two opposite side walls in the longitudinal direction of the box body. The telescopic ends of the longitudinal deviation correction oil cylinders pass through the deviation correction holes and are connected to the vertical jacking oil cylinder through deviation correction connecting seats.

[0010] In a preferred embodiment, a matching laser emitter and receiving target are respectively arranged on the opposite sides of the connecting cross beam of the two transverse movement devices for positioning the relative position relationship between the two transverse movement devices.

[0011] In a preferred embodiment, the middle support leg and the front support leg on the transversely movable bridge erector are both slidably arranged on the transverse movement track through the transverse movement mechanisms at their bottoms; The transverse movement mechanism is composed of one or more transverse movement units. The number of transverse movement tracks matches the number of transverse movement units; The transverse movement unit includes a concave beam with a downward depression in the middle. Transverse movement mechanisms that are in sliding fit with the transverse movement track are arranged at the bottoms of both ends of the concave beam. Multiple pin holes are arranged at the center of the transverse movement track. A connecting mechanism that can cooperate with the pin holes is arranged at the depressed part in the middle of the concave beam. The connecting mechanism includes a U-shaped sleeve beam covering the depressed part in the middle of the concave beam. A row of through holes that can correspond to the pin holes are arranged on both side walls of the U-shaped sleeve beam. And a pin inserting mechanism is arranged at the through hole of one of the side walls. When the number of transverse movement units is not less than two, they are connected by a connecting cross beam between the ends. The transverse movement tracks are connected by a track connecting beam. A top cross beam connected to the transverse movement track is arranged at the top supported by the transverse movement track.

[0012] In a preferred embodiment, the bolt mechanism includes a telescopic adjustment kit disposed at the side wall perforation. A pin shaft is telescopically disposed through the telescopic adjustment kit. A rack is embedded at the top of the pin shaft. An opening is provided at the top of the telescopic adjustment kit above the rack. A support platform is provided on the side of the telescopic adjustment kit. A second driving device is installed on the top of the support platform. The output end of the second driving device is provided with an adjustment gear that passes through the opening and meshes with the rack; A plurality of sliding grooves are further provided on the outer wall surface of the pin shaft. Sliding blocks that are slidably engaged with the sliding grooves are provided on the inner wall surface of the telescopic adjustment kit. The length of the sliding grooves meets the telescopic requirements of the pin shaft; Two locking holes are penetrated through the pin shaft to lock the two states of the pin shaft extending or retracting. A locking cylinder is provided outside the telescopic adjustment kit. The telescopic end of the locking cylinder can penetrate through the telescopic adjustment kit and any one of the locking holes; A protective housing is sleeved outside the adjustment gear.

[0013] In a preferred embodiment, the connecting mechanism includes four lifting mechanisms disposed on both sides of the middle recess of the concave beam. It includes an extension plate provided on the side of the concave beam, a telescopic oil cylinder provided on the extension plate. The U-shaped sleeve beam is movably sleeved outside the concave beam, and shelves connected to the telescopic ends of the four telescopic oil cylinders are respectively provided at the four corners; A plurality of lifting limit rods are provided at the top of the middle recess of the concave beam. The U-shaped sleeve beam is sleeved outside the lifting limit rods through the lifting holes provided at its top; The lifting limit rod includes an outer sleeve rod with an open top and a limit ring provided at the top. A rotating rod is rotatably provided inside the outer sleeve rod through a bearing. Two receiving plates are symmetrically provided on the outside of the rotating rod. The gap between the receiving plate and the limit ring is adapted to the thickness of the top plate of the U-shaped sleeve beam. A rotating opening for the two receiving plates to extend and rotate is provided on the outer sleeve rod. A rotating cylinder is provided at the top of the outer sleeve rod. The top end of the rotating rod passes through the opening and is connected to the output end of the rotating cylinder; A through groove for the receiving plate to pass through is provided at the lifting hole of the U-shaped sleeve beam; An inclined support block is further provided between the bottom of the receiving plate and the outer wall surface of the rotating rod. The width of the rotating opening is greater than the sum of their heights; A positioning target is provided at the top of the center of the transverse movement track. A positioning sensor that matches the positioning target is provided at the bottom of the center of the concave beam.

[0014] The method includes: S1. The transversely movable bridge erector passes through the hole and is in place. The two transverse movement devices are respectively hoisted to the sides of the two adjacent lower pier caps above it by the transversely movable bridge erector, and the relative positions of the three-way jacking mechanisms between the two are adjusted. Then the outer precast small box girder is placed on the two transverse movement devices; S2. Pass the locking bolt through the locking hole to fix the end of the horizontal jacking oil cylinder, and control the horizontal jacking oil cylinder to jack the vertical and longitudinal adjustment mechanism, so that it jacks the precast small box girder on the outer side forward for a certain distance; S3. Release the plug-in relationship between the locking bolt and the locking hole, and control the horizontal jacking oil cylinder to retract a corresponding distance during its return stroke, so that its tail end retracts; S4. Repeat steps S2 and S3 until the precast small box girder is horizontally displaced in place. After rectifying by the longitudinal rectifying oil cylinder, then lower the precast small box girder on the outer side to above the temporary support sand barrel through the vertical jacking oil cylinder; S5. The horizontally movable bridge crane can lift and rotate the horizontal movement device to the other side, and erect the precast small box girder on the lower outer side of the other side.

[0015] The present invention provides a horizontally movable erection device and method for precast small box girders of a double-deck bridge with a narrow upper part and a wide lower part. By combining two horizontally movable devices working together with a horizontally movable bridge crane, it can effectively install the lower-layer precast small box girders with a width exceeding the conventional one, successfully solve the technical problem of synchronous erection of double-deck precast small box girders with a narrow upper part and a wide lower part, ensure that the upper and lower-layer small box girders can be installed synchronously and safely. At the same time, the overall structure is simple, effectively improving the construction efficiency, shortening the construction period, reducing the project cost, and having good popularization and application value. Description of the Drawings

[0016] The following further describes the present invention with reference to the drawings and embodiments: Figure 1 is the overall structure diagram of the present invention; Figure 2 is the structure diagram of the horizontal movement device of the present invention; Figure 3 is the structure diagram of the horizontal movement track of the present invention; Figure 4 is the structure diagram of the horizontal jacking mechanism of the present invention; Figure 5 is the connection structure diagram of the vertical and longitudinal adjustment mechanism of the present invention; Figure 6 is the half-sectional structure diagram of the box body of the present invention; Figure 7 is the half-sectional structure diagram of the vertical and longitudinal adjustment mechanism of the present invention; Figure 8 is the connection structure diagram of the horizontal movement mechanism and the horizontal movement track of the present invention; Figure 9 is the exploded structure diagram of the horizontal movement unit of the present invention; Figure 10 is the half-sectional structure diagram of the plug mechanism of the present invention; Figure 11 is the Figure 10 exploded structure diagram; Figure 12It is the structural diagram of the lifting limit rod of the present invention; Figure 13 It is the present invention Figure 12 Explosion structure diagram; Figure 14 It is the schematic diagram of step S1 of the present invention; Figure 15 It is the structural diagram of step S2 of the present invention; Figure 16 It is the structural diagram of step S3 of the present invention; Figure 17 It is the structural diagram of step S4 of the present invention; In the figure: the horizontally movable bridge erecting machine 1; the middle support leg 10; the horizontal movement unit 100; the connecting cross beam 101; the concave beam 102; the horizontal movement traveling mechanism 103; the extension plate 104; the telescopic oil cylinder 105; the U-shaped sleeve beam 106; the shelf 107; the perforation 108; the pin mechanism 109; the telescopic adjustment kit 1090; the pin shaft 1091; the rack 1092; the opening 1093; the support platform 1094; the second driving device 1095; the adjusting gear 1096; the sliding groove 1097; the sliding block 1098; the locking hole 1099; the locking air cylinder 1010; the protection housing 1011; the lifting limit rod 110; the outer sleeve rod 1100; the limit ring 1101; the rotating port 1102; the rotating rod 1103; the bearing plate 1104; the inclined support block 1105; the rotating air cylinder 1106; the lifting hole 111; the through groove 112; the front support leg 11; the horizontal movement track 2; the horizontal movement device 3; the bottom support 30; the horizontal movement track 31; the I-beam 310; the locking hole 311; the vertical and longitudinal adjustment mechanism 32; the box body 320; the second L-shaped limit block 321; the longitudinal limit groove 322; the deviation correction hole 323; the longitudinal deviation correction oil cylinder 324; the longitudinal sliding seat 325; the limit step 326; the vertical jacking oil cylinder 327; the deviation correction connecting seat 328; the connecting cross beam 33; the laser emitter 34; the horizontal pushing mechanism 35; the horizontal pushing oil cylinder 350; the sliding seat 351; the first L-shaped limit block 352; the support seat 353; the locking bolt 354. Detailed implementation manners

[0017] Embodiment 1 As Figures 1-7 shown, a horizontally movable erection device for precast small box girders of a double-deck bridge with a narrow upper part and a wide lower part includes a horizontally movable bridge erecting machine 1 erected on the upper layer of the double-deck bridge, and further includes two horizontal movement devices 3 which are oppositely arranged on two adjacent lower pier caps of the precast small box girders to be erected, so that the lower side precast small box girders exceeding the width of the upper layer of the double-deck bridge can be assisted in installation through the horizontal movement devices 3, and the problem that the horizontally movable bridge erecting machine 1 cannot hoist the lower side precast small box girders due to the limitation of the width of the upper bridge is solved.

[0018] It should be noted that the horizontally movable bridge erecting machine 1 is a commonly used technical means in the art, so it will not be described in detail here.

[0019] The horizontal movement device 3 includes a plurality of bottom supports 30. A horizontal movement track 31 is fixedly provided at the top of the bottom support 30. A three-way jacking mechanism for installing the lower-layer side precast small box girders is arranged at the top of the horizontal movement track 31. During installation, the installation of the precast small box girders is realized through the jacking work in three directions of the three-way jacking mechanism.

[0020] Furthermore, the three-way jacking mechanism includes two vertical and longitudinal adjustment mechanisms 32 and a horizontal jacking mechanism 35 that are slidably arranged on the top of the horizontal movement track 31. A connecting cross beam 33 is arranged between the two vertical and longitudinal adjustment mechanisms 32.

[0021] In a preferred solution, the horizontal movement track 31 is composed of two I-beams 310. A plurality of locking holes 311 are arranged at the top of the connection between the two I-beams 310. Designed in this way, the locking holes 311 can be communicated with the cavity formed by connecting the two I-beams 310. In addition, the specific number and spacing of the locking holes 311 can be determined according to the actual installation distance required.

[0022] Furthermore, the horizontal jacking mechanism 35 includes a horizontal jacking oil cylinder 350. The telescopic end of the horizontal jacking oil cylinder 350 is connected to one of the vertical and longitudinal adjustment mechanisms 32. A plurality of sliding seats 351 that are in sliding contact with the horizontal movement track 31 are arranged at the bottom of the horizontal jacking oil cylinder 350. In this embodiment, the number of sliding seats 351 is two. First L-shaped limit blocks 352 that are buckled with the edges of the I-beams 310 are connected to both ends of the sliding seats 351, thus ensuring the stability during its sliding. A support seat 353 is also arranged at the tail end of the horizontal jacking oil cylinder 350. A locking bolt 354 is arranged on the support seat 353. The end of the locking bolt 354 can freely penetrate through the support seat 353 and be inserted into any one of the locking holes 311.

[0023] Designed in this way, the tail of the horizontal jacking oil cylinder 350 can be fixed by the locking bolt 354, so as to provide the required supporting force for its jacking. In addition, after pushing out a certain stroke, by releasing the fixation of the locking bolt 354, the effect of the tail retracting can be realized by using the telescopic of the horizontal jacking oil cylinder 350, and then it is convenient to realize continuous jacking.

[0024] In a preferred solution, the locking bolt 354 is a telescopic cylinder, and the telescopic cylinder can be one of an electric cylinder, a hydraulic cylinder and a pneumatic cylinder, so as to facilitate the automatic control of the locking bolt 354.

[0025] In a preferred embodiment, the vertical and longitudinal adjustment mechanism 32 includes a box body 320 whose bottom is in sliding contact with the transverse movement track 31. Second L-shaped limit blocks 321 that engage with the edges of the I-beam 310 are provided at two opposite edges of the bottom of the box body 320, thus ensuring the stability during its sliding. Rectification holes 323 are provided on two opposite side walls in the longitudinal direction of the box body 320, and longitudinal limit grooves 322 are provided at the bottoms of the two side walls.

[0026] A longitudinal sliding seat 325 is in sliding contact with the inner bottom wall of the box body 320. Limit steps 326 that are slidably engaged with the longitudinal limit grooves 322 are provided at two opposite edges of the longitudinal sliding seat 325, making its sliding more stable. A vertical lifting oil cylinder 327 is provided at its top. Longitudinal rectification oil cylinders 324 are provided on two opposite side walls in the longitudinal direction of the box body 320. The telescopic ends of the longitudinal rectification oil cylinders 324 pass through the rectification holes 323 and are connected to the vertical lifting oil cylinder 327 through rectification connection seats 328.

[0027] It should be noted that when the vertical lifting oil cylinder 327 is in a contracted state, the height of its top is lower than the seating height of the precast small box girder.

[0028] With such a design, the longitudinal movement control of the vertical lifting oil cylinder 327 can be achieved through the telescoping of the longitudinal rectification oil cylinder 324, thereby realizing the function of longitudinal rectification. Through the telescoping of the vertical lifting oil cylinder 327, the control of the vertical height can be achieved.

[0029] In a preferred embodiment, a matching laser emitter 34 and receiving target are respectively provided on the opposite sides of the connecting cross beam 33 of the two transverse movement devices 3 for positioning the relative positional relationship between the two transverse movement devices 3.

[0030] Embodiment 2 Further described in combination with Embodiment 1, as shown in the structure of FIGS. 14 - 17, a method for horizontally moving and erecting a precast small box girder of an upper-narrow-and-lower-wide double-deck bridge uses the device for horizontally moving and erecting a precast small box girder of an upper-narrow-and-lower-wide double-deck bridge in Embodiment 1 above. The method includes: Figures 1-7 As shown in FIGS. 14 - 17, a method for horizontally moving and erecting a precast small box girder of an upper-narrow-and-lower-wide double-deck bridge uses the device for horizontally moving and erecting a precast small box girder of an upper-narrow-and-lower-wide double-deck bridge in Embodiment 1 above. The method includes: S1. The horizontally movable bridge erection machine 1 passes through the hole and is in place. The two transverse movement devices 3 are respectively hoisted to the sides of two adjacent lower deck girders above it by the horizontally movable bridge erection machine 1, and the relative positions of the three-way jacking mechanisms between the two are adjusted. Then, the outer precast small box girder is placed on the two transverse movement devices 3. S2. The end of the transverse jacking oil cylinder 350 is fixed by passing the locking bolt 354 through the locking hole 311, and the transverse jacking oil cylinder 350 is controlled to jack the vertical and longitudinal adjustment mechanism 32, so that it jacks the outer precast small box girder forward for a certain distance. S3. Disconnect the plugging relationship between the unlocking bolt 354 and the locking hole 311, and control the return stroke of the horizontal pushing oil cylinder 350 by a corresponding distance to retract its tail end. S4. Repeat steps S2 and S3 until the precast small box girder is horizontally moved in place. After rectifying the deviation through the longitudinal deviation rectifying oil cylinder 324, lower the outer precast small box girder onto the temporary support sand barrel through the vertical lifting oil cylinder 327. S5. The horizontally movable bridge girder erecting machine 1 can hoist and rotate the horizontal moving device 3 to the other side and erect the lower outer precast small box girder on the other side.

[0031] Embodiment 3 Combined with Embodiments 1 and 2 for further illustration, in order to facilitate the synchronous movement of the horizontal moving tracks 2 of the middle support legs 10 and the front support legs 11 when the horizontally movable bridge girder erecting machine 1 passes through the hole, as Figures 8-13 shown in the structure, in this embodiment, both the middle support legs 10 and the front support legs 11 on the horizontally movable bridge girder erecting machine 1 are slidably arranged on the horizontal moving tracks 2 through the horizontal moving mechanisms at their bottoms.

[0032] It should be noted that the horizontal moving mechanism is composed of one or more horizontal moving units 100, and the number of the horizontal moving tracks 2 matches the number of the horizontal moving units 100. In this embodiment, the horizontal moving mechanism of the middle support leg 10 is composed of two horizontal moving units 100, and the horizontal moving mechanism of the front support leg 11 is one horizontal moving unit 100. When the number of the horizontal moving units 100 is not less than two, they are connected by the connecting cross beam 101 between the ends, the horizontal moving tracks 2 are connected by the track connecting beam 200, and the top of the horizontal moving track support 4 is provided with the top cross beam 400 connected to a plurality of horizontal moving tracks 2.

[0033] The horizontal moving unit 100 includes a concave beam 102 with a downward depression in the middle. At the bottoms of both ends of the concave beam 102, there are horizontal moving mechanisms 103 slidably matched with the horizontal moving tracks 2. A plurality of pin holes 201 are arranged at the center of the horizontal moving track 2, and a connecting mechanism that can be matched with the pin holes 201 is arranged at the middle depression of the concave beam 102.

[0034] With such a design, through the downward depression in the middle of the concave beam 102, the connecting mechanism can be closest to the horizontal moving track 2 to the greatest extent, thus facilitating the connection between the two.

[0035] The connecting mechanism includes a U-shaped sleeve beam 106 covering the middle depression of the concave beam 102. A row of through holes 108 corresponding to the pin holes 201 are arranged on both side walls of the U-shaped sleeve beam 106, and a pin inserting mechanism 109 is arranged at the through holes 108 on one side wall.

[0036] When it is necessary to synchronously hoist and move the transverse moving track 2 and the transverse moving track support 4, the pin mechanism 109 can be used to pass through the perforation 108 and the pin hole 201 and connect and lock it with the middle leg 10 to make it an integral structure.

[0037] In the preferred solution, the pin mechanism 109 includes a telescopic adjustment kit 1090 arranged at the side wall perforation 108. A pin shaft 1091 is telescopically arranged through the telescopic adjustment kit 1090. A rack 1092 is embedded at the top of the pin shaft 1091. An opening 1093 is arranged at the top of the telescopic adjustment kit 1090 above the rack 1092. A support platform 1094 is arranged on the side of the telescopic adjustment kit 1090. A second driving device 1095 is installed at the top of the support platform 1094. An adjustment gear 1096 that passes through the opening 1093 and meshes with the rack 1092 is arranged at the output end of the second driving device 1095.

[0038] During use, the second driving device 1095 can be used to drive the adjustment gear 1096 to rotate. Then, through the meshing relationship with the rack 1092, it can be telescoped in the telescopic adjustment kit 1090, so as to realize the connection and separation effects between the transverse moving track 2 and the middle leg 10 by controlling the telescoping of the pin shaft 1091.

[0039] In addition, a plurality of sliding grooves 1097 are arranged on the outer wall surface of the pin shaft 1091. In this embodiment, the number of the sliding grooves 1097 is two. Sliding blocks 1098 that are slidably matched with the sliding grooves 1097 are arranged on the inner wall surface of the telescopic adjustment kit 1090. The length of the sliding grooves 1097 meets the telescoping requirements of the pin shaft 1091. Through the cooperation between the sliding grooves 1097 and the sliding blocks 1098, the limiting effect on the telescoping process of the pin shaft 1091 can be achieved, and at the same time, its telescoping is more stable, preventing unnecessary circumferential rotation.

[0040] Two locking holes 1099 are arranged through the pin shaft 1091 for locking the two states of the pin shaft 1091 extending or retracting. A locking cylinder 1010 is arranged outside the telescopic adjustment kit 1090. The telescopic end of the locking cylinder 1010 can pass through the telescopic adjustment kit 1090 and any one of the locking holes 1099. By passing the pin shaft 1091 through any one of the locking holes 1099, the effect of locking the state of the pin shaft 1091 can be achieved, preventing unnecessary movement.

[0041] A protective housing 1011 is sleeved outside the adjustment gear 1096 for protecting the adjustment gear 1096.

[0042] In a preferred embodiment, the connecting mechanism includes four lifting mechanisms arranged on both sides of the middle recess of the concave beam 102. The lifting mechanisms include extension plates 104 arranged on the sides of the concave beam 102, telescopic oil cylinders 105 arranged on the extension plates 104. The U-shaped sleeve beam 106 is movably sleeved outside the concave beam 102, and shelves 107 connected to the telescopic ends of the four telescopic oil cylinders 105 are respectively arranged at the four corners.

[0043] With such a design, the lifting effect of the U-shaped sleeve beam 106 can be realized by the telescoping of the telescopic oil cylinder 105. Thus, when it is not necessary to connect the transverse moving track 2 and the middle support leg 10, the U-shaped sleeve beam 106 can be lifted to prevent unnecessary collisions between the U-shaped sleeve beam 106 and the other structures on the transverse moving track 2 during the normal transverse movement of the transverse movable bridge crane 1.

[0044] A plurality of lifting limit rods 110 are arranged at the top of the middle recess of the concave beam 102. The specific number of the lifting limit rods 110 can be determined according to actual requirements. The U-shaped sleeve beam 106 is sleeved outside the lifting limit rods 110 through the lifting holes 111 arranged at its top. Through the lifting limit rods 110, the U-shaped sleeve beam 106 can be made more stable during the lifting process.

[0045] In a preferred embodiment, the lifting limit rod 110 includes an outer sleeve rod 1100 with an open top, and a limit ring 1101 is arranged at the top. The diameter of the limit ring 1101 is larger than the diameter of the lifting hole 111, which is used to limit the lifting height of the U-shaped sleeve beam 106 and prevent the U-shaped sleeve beam 106 from detaching. A rotating rod 1103 is rotatably arranged inside the outer sleeve rod 1100 through a bearing. Two receiving plates 1104 are symmetrically arranged outside the rotating rod 1103. The gap between the receiving plate 1104 and the limit ring 1101 is adapted to the thickness of the top plate of the U-shaped sleeve beam 106. A rotating opening 1102 for the two receiving plates 1104 to extend out and rotate is arranged on the outer sleeve rod 1100. A rotating cylinder 1106 is arranged at the top of the outer sleeve rod 1100. The top end of the rotating rod 1103 passes through the opening and is connected to the output end of the rotating cylinder 1106.

[0046] In addition, a through groove 112 for the receiving plate 1104 to pass through is arranged at the lifting hole 111 of the U-shaped sleeve beam 106.

[0047] With such a design, when the U-shaped sleeve beam 106 is lifted, the through groove 112 can be used to pass through the receiving plate 1104. Then, after rising to the top, the rotating cylinder 1106 is used to drive the rotating rod 1103 to drive the receiving plate 1104 to rotate, so as to support the U-shaped sleeve beam 106 from the bottom, and thus the telescopic oil cylinder 105 can be depressurized.

[0048] A brace block 1105 is further provided between the bottom of the receiving plate 1104 and the outer wall surface of the rotating rod 1103 to improve the support strength of the receiving plate 1104. The width of the rotating opening 1102 is greater than the sum of their heights.

[0049] A positioning target is provided at the top of the center of the transverse movement track 2, and a positioning sensor matching the positioning target is provided at the bottom of the center of the concave beam 102, so as to facilitate the positioning work before connection by using the cooperation between the positioning target and the positioning sensor.

[0050] It should be noted that the above-mentioned second driving device 1095 is composed of a driving motor and a reducer transmission combination. In addition, the above-mentioned mechanical structure is equipped with a matching controller and accessories, which are common technical means in this field, so no detailed description will be given here.

[0051] The above embodiments are only the preferred technical solutions of the present invention and should not be regarded as limitations on the present invention. The protection scope of the present invention should be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A precast small box girder transverse erection device for a double-deck bridge with a narrow upper part and a wide lower part, including a transverse movable bridge erecting machine (1) erected on the upper layer of the double-deck bridge, characterized in that: It also includes two transverse movement devices (3), which are relatively arranged on two adjacent lower pier caps of the precast small box girders to be erected; The transverse movement device (3) includes a plurality of bottom supports (30). A transverse movement track (31) is arranged at the top of the bottom support (30), and a three-way jacking mechanism for installing the lower side precast small box girders is arranged at the top of the transverse movement track (31).

2. The precast small box girder transverse erection device for a double-deck bridge with a narrow upper part and a wide lower part according to claim 1, characterized in that: The three-way jacking mechanism includes two vertical and longitudinal adjustment mechanisms (32) and a transverse jacking mechanism (35) that are slidably arranged at the top of the transverse movement track (31). A connecting cross beam (33) is arranged between the two vertical and longitudinal adjustment mechanisms (32).

3. The precast small box girder transverse erection device for the double-layer bridge with a narrow upper part and a wide lower part according to claim 2, characterized in that: The transverse movement track (31) is composed of two I-beams (310). A plurality of locking holes (311) are arranged at the top of the connection of the two I-beams (310).

4. The precast small box girder transverse erection device for the upper-narrow and lower-wide double-deck bridge according to claim 3, characterized in that: The transverse jacking mechanism (35) includes a transverse jacking oil cylinder (350). The telescopic end of the transverse jacking oil cylinder (350) is connected to one of the vertical and longitudinal adjustment mechanisms (32). A plurality of sliding seats (351) that are in sliding contact with the transverse movement track (31) are arranged at the bottom of the transverse jacking oil cylinder (350). First L-shaped limit blocks (352) that are buckled with the edges of the I-beams (310) are connected to both ends of the sliding seat (351). A support seat (353) is also arranged at the tail end of the transverse jacking oil cylinder (350). A locking bolt (354) is arranged on the support seat (353). The end of the locking bolt (354) can freely penetrate through the support seat (353) and be inserted into any one of the locking holes (311); The locking bolt (354) is a telescopic cylinder.

5. The prefabricated small box girder transverse erection device for a double-layer bridge with a narrow upper part and a wide lower part according to claim 4, characterized in that: The vertical and longitudinal adjustment mechanism (32) includes a box body (320) whose bottom is in sliding contact with the transverse movement track (31). Second L-shaped limit blocks (321) that are buckled with the edges of the I-beams (310) are arranged at the two opposite edges of the bottom of the box body (320). Deviation correction holes (323) are arranged on the two opposite side walls in the longitudinal direction of the box body (320). Longitudinal limit grooves (322) are arranged at the bottom of the two side walls. A longitudinal sliding seat (325) is in sliding contact with the inner bottom wall of the box body (320). Limit steps (326) that are in sliding fit with the longitudinal limit grooves (322) are arranged at the two edges of the longitudinal sliding seat (325). A vertical jacking oil cylinder (327) is arranged at its top. Longitudinal deviation correction oil cylinders (324) are arranged on the two opposite side walls in the longitudinal direction of the box body (320). The telescopic ends of the longitudinal deviation correction oil cylinders (324) pass through the deviation correction holes (323) and are connected to the vertical jacking oil cylinder (327) through deviation correction connection seats (328).

6. The precast small box girder transverse erection device for a double-layer bridge with a narrow upper part and a wide lower part according to any one of claims 2-5, characterized in that: Laser emitters (34) and receiving targets that match each other are respectively arranged on the opposite sides of the connecting cross beam (33) of the two transverse movement devices (3) for positioning the relative position relationship between the two transverse movement devices (3).

7. The precast small box girder horizontal translation erection device for a double-layer bridge with a narrow upper part and a wide lower part according to claim 1, characterized in that: The middle support leg (10) and the front support leg (11) on the transverse movable bridge crane (1) are both slidably arranged on the transverse movement track (2) through the transverse movement mechanisms at their bottoms; The transverse movement mechanism is composed of one or more transverse movement units (100). The number of the transverse movement tracks (2) matches the number of the transverse movement units (100); The transverse movement unit (100) includes a concave beam (102) with a downward depression in the middle. At the bottom of both ends of the concave beam (102), there are transverse movement walking mechanisms (103) that are slidably matched with the transverse movement track (2). At the center of the transverse movement track (2), there are multiple pin holes (201). At the middle depression of the concave beam (102), there is a connection mechanism that can cooperate with the pin holes (201). The connection mechanism includes a U-shaped sleeve beam (106) covering the middle depression of the concave beam (102). On both side walls of the U-shaped sleeve beam (106), there is a row of through holes (108) that can correspond to the pin holes (201), and at the through holes (108) of one of the side walls, there is a pin insertion mechanism (109). When the number of transverse movement units (100) is not less than two, they are connected by a connecting cross beam (101) between the ends. The transverse movement tracks (2) are connected by a track connecting beam (200). At the top of the transverse movement track support (4), there is a top cross beam (400) connected to the transverse movement track.

8. The precast small box girder transverse erection device for a double-layer bridge with a narrow upper part and a wide lower part according to claim 7, characterized in that: The pin insertion mechanism (109) includes a telescopic adjustment kit (1090) arranged at the side wall through hole (108). A pin shaft (1091) is telescopically arranged through the telescopic adjustment kit (1090). At the top of the pin shaft (1091), a rack (1092) is embedded. At the top of the telescopic adjustment kit (1090), there is an opening (1093) located above the rack (1092). On the side of the telescopic adjustment kit (1090), there is a support platform (1094). At the top of the support platform (1094), a second driving device (1095) is installed. At the output end of the second driving device (1095), there is an adjustment gear (1096) that passes through the opening (1093) and meshes with the rack (1092). On the outer wall surface of the pin shaft (1091), there are also multiple sliding grooves (1097). On the inner wall surface of the telescopic adjustment kit (1090), there are sliding blocks (1098) that are slidably matched with the sliding grooves (1097). The length of the sliding grooves (1097) meets the telescopic requirements of the pin shaft (1091). Two locking holes (1099) are arranged through the pin shaft (1091) to lock the two states of the pin shaft (1091) extending or retracting. Outside the telescopic adjustment kit (1090), there is a locking cylinder (1010). The telescopic end of the locking cylinder (1010) can pass through the telescopic adjustment kit (1090) and any one of the locking holes (1099). A protective housing (1011) is sleeved outside the adjustment gear (1096).

9. The precast small box girder transverse erection device for a double-layer bridge with a narrow upper part and a wide lower part according to claim 7, characterized in that: The connection mechanism includes four lifting mechanisms arranged on both sides of the middle depression of the concave beam (102). It includes an extension plate (104) arranged on the side of the concave beam (102), a telescopic oil cylinder (105) arranged on the extension plate (104). The U-shaped sleeve beam (106) is movably sleeved outside the concave beam (102), and at the four corners, there are shelves (107) respectively connected to the telescopic ends of the four telescopic oil cylinders (105). At the top of the concave part in the middle of the concave beam (102), a plurality of lifting limit rods (110) are provided. The U-shaped sleeve beam (106) is sleeved outside the lifting limit rods (110) through the lifting holes (111) provided at its top. The lifting limit rod (110) includes an outer sleeve rod (1100) with an open top, and a limit ring (1101) is provided at the top. A rotating rod (1103) is rotatably arranged inside the outer sleeve rod (1100) through a bearing. Two receiving plates (1104) are symmetrically arranged outside the rotating rod (1103). The gap between the receiving plate (1104) and the limit ring (1101) is adapted to the thickness of the top plate of the U-shaped sleeve beam (106). A rotating opening (1102) for the two receiving plates (1104) to extend out and rotate is provided on the outer sleeve rod (1100). A rotating cylinder (1106) is provided at the top of the outer sleeve rod (1100). The top end of the rotating rod (1103) passes through the opening and is connected to the output end of the rotating cylinder (1106). A through groove (112) for the receiving plate (1104) to pass through is provided at the lifting hole (111) of the U-shaped sleeve beam (106). An inclined support block (1105) is further provided between the bottom of the receiving plate (1104) and the outer wall surface of the rotating rod (1103). The width of the rotating opening (1102) is greater than the sum of their heights. A positioning target is provided at the top of the center of the transverse movement track (2), and a positioning sensor matching the positioning target is provided at the bottom of the center of the concave beam (102).

10. A method for horizontally moving and erecting precast small box girders of a double-layer bridge with a narrow upper part and a wide lower part, characterized in that: Using the device for transverse erection of precast small box girders with a narrow upper part and a wide lower part described in any one of claims 1-9, the method includes: S1. The transverse movable bridge erector (1) is in place after passing through the hole, and two transverse movement devices (3) are respectively hoisted to the sides of the two adjacent lower pier caps above it through the transverse movable bridge erector (1). The relative positions of the three-way jacking mechanisms between the two are adjusted, and then the outer precast small box girder is placed on the two transverse movement devices (3). S2. The end of the transverse jacking oil cylinder (350) is fixed by passing the locking bolt (354) through the locking hole (311), and the transverse jacking oil cylinder (350) is controlled to jack the vertical and longitudinal adjustment mechanisms (32) so that it jacks the outer precast small box girder forward for a certain distance. S3. The insertion relationship between the locking bolt (354) and the locking hole (311) is released, and the transverse jacking oil cylinder (350) is controlled to retract a corresponding distance during its return stroke so that its tail end retracts. S4. Steps S2 and S3 are repeated until the precast small box girder is transversely moved in place. After being corrected by the longitudinal deviation correction oil cylinder (324), the outer precast small box girder is lowered onto the temporary support sand cylinder through the vertical jacking oil cylinder (327). S5. The transverse movable bridge erector (1) hoists and rotates the transverse movement device (3) to the other side and erects the outer lower precast small box girder on the other side.

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