Adjustable support auxiliary cast-in-place box girder ball type support construction device and construction method

Abstract

The application discloses a construction device and method of an adjustable support auxiliary cast-in-place box girder spherical support, which comprises four support columns, spherical supports arranged between the four support columns, two horizontal supports fixedly connected to the support columns, two vertical supports slidingly arranged on the two horizontal supports, the vertical supports being detachably connected to the horizontal supports through bolts, a plurality of positioning blocks slidingly arranged on the vertical supports, positioning rods slidingly arranged on the positioning blocks, the positioning rods being fixedly connected to the spherical supports at sides away from the positioning blocks, positioning plates slidingly arranged on the support columns, the positioning plates being capable of abutting against the spherical supports, and driving mechanisms arranged on the positioning blocks and used for driving the positioning rods to move in a vertical direction.

Description

Technical Field

[0001] This invention relates to the technical field of spherical bearings, and in particular to a construction device and method for an adjustable support-assisted spherical bearing for cast-in-place box girders. Background Technology

[0002] Spherical bearings are a new type of bridge bearing developed from pot bearings. Spherical bearings are classified as fixed bearings, unidirectional movable bearings, and multidirectional movable bearings. Because spherical bearings do not use rubber for load bearing, they do not suffer from adverse effects such as rubber hardening or aging, making them particularly suitable for low-temperature regions.

[0003] In existing technologies, when installing spherical supports onto the pad stone, the flowability of the grout itself is generally relied upon to fill the gaps between the pre-reserved holes in the pad stone and the bottom of the support. This method is prone to problems such as incomplete filling or voids between the pad stone and the spherical support. Therefore, a new construction technique has emerged. When pouring the pad stone, four pillars are first erected around the pad stone mold. Then, two horizontal supports and two vertical supports are welded to the four pillars. Four shims are installed on the two vertical or horizontal supports using long screws. The position of the long screws is adjusted by adjusting the position of the shims. The bottom end of the long screw is fixedly connected to the spherical support, which facilitates the placement of the spherical support directly above the pad stone mold. Finally, the grout is poured to integrally form the spherical support onto the pad stone.

[0004] However, when it is necessary to level the spherical support, the operator needs to manually rotate the long screw and adjust the height of the long screw to level the spherical support. This operation is cumbersome and the leveling result is not very accurate. Summary of the Invention

[0005] In order to facilitate leveling of the spherical bearing, this application provides an adjustable support-assisted construction device for the spherical bearing of the cast-in-place box girder, adopting the following technical solution:

[0006] An adjustable support-assisted construction device for a spherical bearing of a cast-in-place box girder includes four columns, with a spherical bearing positioned between the four columns. Two horizontal supports are fixedly connected to each column, and two longitudinal supports are slidably mounted on the two horizontal supports. The longitudinal supports are detachably connected to the horizontal supports by bolts. Multiple positioning blocks are slidably mounted on each longitudinal support, and positioning rods are slidably mounted on each positioning block. The side of the positioning rod furthest from the positioning block is fixedly connected to the spherical bearing. A positioning plate is slidably mounted on each column, and the positioning plate can abut against the spherical bearing. A driving mechanism is provided on each positioning block for driving the positioning rod to move vertically.

[0007] By adopting the above technical solution, when the spherical support needs to be leveled, multiple positioning plates are in a horizontal state. The positioning rod is driven to move vertically by the driving mechanism. The positioning rod drives the four corners of the spherical support to move vertically. When the upper surface of the spherical support is in contact with the lower surface of the positioning plate, it is easy to level the spherical support.

[0008] Preferably, the driving mechanism includes a driving rod, a positioning rod fixedly connected to the driving rod, a through groove on the positioning block, and the driving rod slidably disposed within the through groove; a driving groove is formed on the inner wall of the through groove, a driving block is rotatably disposed on the inner wall of the driving groove, the driving rod passes through the driving block, a plurality of threaded blocks are fixedly connected to the driving rod, a plurality of threaded grooves are formed on the driving block, and the plurality of threaded blocks and the plurality of threaded grooves are correspondingly engaged; the driving block is provided with a driving assembly for driving the driving block to rotate, and a guiding assembly for guiding the driving rod is provided on the driving block.

[0009] By adopting the above technical solution, when it is necessary to drive the positioning rod to move in the vertical direction, the driving block is first driven to rotate by the driving component, and the driving block drives the driving rod to move in the vertical direction, thereby facilitating the driving of the positioning rod to move in the vertical direction.

[0010] Preferably, the drive assembly includes a rotating shaft rotatably mounted on the drive block. One end of the rotating shaft is fixedly connected to a turntable, and the other end of the rotating shaft is fixedly connected to a first bevel gear. A second bevel gear is sleeved and fixed on the drive block, and the first bevel gear meshes with the second bevel gear.

[0011] By adopting the above technical solution, when it is necessary to drive the drive block to rotate, the operator manually drives the turntable to rotate, the turntable drives the shaft to rotate, the shaft drives the first bevel gear to rotate, and the first bevel gear drives the second bevel gear to rotate, thereby facilitating the rotation of the drive block.

[0012] Preferably, the guiding assembly includes a guide rod, which is fixedly connected to the end of the driving rod away from the positioning rod. The positioning block has a guide groove, which communicates with the through groove, and the guide rod is slidably disposed in the guide groove.

[0013] By adopting the above technical solution, when the positioning rod moves in the vertical direction, the guide rod can reduce the possibility of the positioning rod rotating, thereby facilitating the positioning rod to make translational movements in the vertical direction.

[0014] Preferably, two adjacent positioning plates are connected by a connecting plate, one of the support columns is provided with a lifting mechanism for driving the positioning plate to move in the vertical direction, and the other support columns are provided with guide members for guiding the positioning plates.

[0015] By adopting the above technical solution, when the spherical support needs to be leveled, the positioning plate can be moved by the lifting mechanism, which makes it easy to adjust the position of the spherical support when it abuts the positioning plate, thereby making it easy to adjust the vertical orientation of the spherical support after leveling.

[0016] Preferably, the lifting mechanism includes a lead screw, which is rotatably mounted on the support column. The lead screw is threadedly engaged with the positioning plate. A motor is mounted on the support column. The output shaft of the motor is fixedly connected to a third bevel gear. A fourth bevel gear is sleeved and fixed on the lead screw. The third bevel gear meshes with the fourth bevel gear.

[0017] By adopting the above technical solution, when it is necessary to drive the positioning plate to move in the vertical direction, the output shaft of the starter motor rotates, and the motor drives the lead screw to rotate, thereby facilitating the driving of the positioning plate to move in the vertical direction.

[0018] Preferably, the guide member includes a guide post, which is fixedly connected to the support column and slides with the positioning plate.

[0019] By adopting the above technical solution, when the positioning plate moves in the vertical direction, the setting of the guide column can reduce the possibility of the positioning plate shifting, thereby facilitating the positioning plate to make translational movements in the vertical direction.

[0020] Preferably, the longitudinal support has a through hole, the positioning block is slidably disposed on the inner wall of the through hole, a rack is fixedly connected to the inner wall of the through hole, a mounting groove is provided on one side of the positioning block, a gear is rotatably disposed in the mounting groove, and the gear cooperates with the rack; multiple baffles are fixedly connected to the positioning block, and the baffles can abut against the longitudinal support; the positioning block is provided with a limiting mechanism for limiting the gear.

[0021] By adopting the above technical solution, when it is necessary to adjust the position of the positioning block, the limiting mechanism on the gear is first canceled. At this time, the gear and rack can be manually driven by the operator to move the positioning block. When the positioning block is adjusted to the correct position, the limiting mechanism can be used to limit the positioning block.

[0022] Preferably, the limiting mechanism includes a limiting block, which is slidably disposed on the inner wall of the mounting groove and can be inserted into the tooth groove of the gear. A vertical block is slidably disposed on the inner wall of the mounting groove and is fixedly connected to the limiting block. A handle is fixedly connected to one side of the vertical block. A spring is disposed in the mounting groove, one end of which is fixedly connected to the inner wall of the mounting groove and the other end of which is fixedly connected to the vertical block.

[0023] By adopting the above technical solution, when it is necessary to limit the positioning block, the limiting block and the spring force allow the limiting block to be inserted into the tooth groove of the gear, thus facilitating the limiting of the positioning block; when it is necessary to release the limiting block from the positioning block, the manual drive handle moves upward, at which time the spring is in a compressed state, and when the limiting block separates from the tooth groove of the gear, the limiting effect of the limiting mechanism on the positioning block can be easily released.

[0024] This application provides a construction method for an adjustable support-assisted spherical bearing for cast-in-place box girders, employing the following technical solution:

[0025] S1: First, manually adjust the position of the two horizontal supports so that the lateral position of their positioning rods matches the two sides of the spherical support, and then tighten the bolts to fix them in place;

[0026] S2: Lift the handle to separate the limit block from the gear. At this time, the operator manually drives the positioning block to move. When the positioning rod is aligned with the spherical support, release the handle. The limit block is inserted into the gear tooth groove under the elastic force of the spring.

[0027] S3: Fix the positioning rod to the spherical support;

[0028] S4: Start the motor to drive the lead screw to rotate, and the lead screw drives multiple positioning plates to move and abut against the spherical support;

[0029] S5: The operator manually drives the turntable to rotate, and the positioning rod drives the spherical support to move. When all four corners of the spherical support abut against the positioning plate, the spherical support is in a horizontal state.

[0030] In summary, this application has the following beneficial effects:

[0031] 1. When the spherical support needs to be leveled, multiple positioning plates are in a horizontal state. The positioning rod is driven to move vertically through the driving mechanism. The positioning rod drives the four corners of the spherical support to move vertically. When the upper surface of the spherical support is in contact with the lower surface of the positioning plate, it is easy to level the spherical support.

[0032] 2. When it is necessary to adjust the position of the positioning block, first cancel the limiting mechanism's limiting effect on the gear. At this time, the gear and rack can move. The operator can then manually drive the positioning block to move. When the positioning block is adjusted to the correct position, the limiting mechanism can be used to limit the positioning block.

[0033] 3. When it is necessary to limit the positioning block, the limiting block and the spring force allow the limiting block to be inserted into the gear tooth groove, thus facilitating the limiting of the positioning block; when it is necessary to release the limiting block from the positioning block, the manual drive handle is moved upward. At this time, the spring is in a compressed state. When the limiting block separates from the gear tooth groove, the limiting mechanism can be released from its limiting effect on the positioning block. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0035] Figure 2 This is a cross-sectional view of the display drive mechanism in this invention;

[0036] Figure 3 yes Figure 2 A magnified view of a section at point A in the middle;

[0037] Figure 4 This is a cross-sectional view showing the limiting mechanism in this invention.

[0038] Explanation of reference numerals in the attached drawings: 1. Support column; 11. Horizontal support; 12. Vertical support; 13. Positioning block; 131. Connecting plate; 14. Positioning rod; 15. Positioning plate; 2. Spherical support; 3. Drive mechanism; 311. Drive rod; 312. Through groove; 313. Drive groove; 314. Drive block; 315. Threaded block; 316. Threaded groove; 32. Drive assembly; 321. Rotating shaft; 322. Turntable; 323. First bevel gear; 324. Second bevel gear; 33. 331. Guide assembly; 332. Guide groove; 41. Lifting mechanism; 411. Lead screw; 412. Placement groove; 413. Motor; 414. Third bevel gear; 415. Fourth bevel gear; 42. Guide component; 421. Guide column; 431. Through hole; 432. Rack; 433. Mounting groove; 434. Gear; 435. Baffle; 44. Limiting mechanism; 441. Limiting block; 442. Vertical block; 443. Handle; 444. Spring. Detailed Implementation

[0039] This invention discloses a construction device for adjustable support-assisted spherical bearings of cast-in-place box girders, such as... Figure 1As shown, it includes four pillars 1, each with a square cross-section and vertically positioned on the ground. A spherical support 2 is provided between the four pillars 1. Two horizontal supports 11 are fixedly connected to each pillar 1. The two horizontal supports 11 are arranged in parallel and have a square cross-section. Two vertical supports 12 are slidably mounted on the two horizontal supports 11 in the horizontal direction. The two vertical supports 12 are arranged in parallel and have a square cross-section. The vertical supports 12 are detachably connected to the horizontal supports 11 by bolts.

[0040] Multiple positioning blocks 13 are slidably arranged on the longitudinal support 12 along its length. The positioning blocks 13 are square. A positioning rod 14 is slidably arranged on the positioning blocks 13 along the vertical direction. The positioning rod 14 has a square cross-section and is arranged vertically. The side of the positioning rod 14 away from the positioning block 13 is fixedly connected to the spherical support 2. A positioning plate 15 is slidably arranged on the column 1 along the vertical direction. The positioning plate 15 is square. The bottom of the positioning plate 15 can abut against the top of the spherical support 2. A drive mechanism 3 is provided on the positioning blocks 13 for driving the positioning rod 14 to move vertically.

[0041] When the spherical support 2 needs to be leveled, multiple positioning plates 15 are in a horizontal state. The positioning rod 14 is driven to move vertically by the driving mechanism 3. The positioning rod 14 drives the four corners of the spherical support 2 to move vertically. When the upper surface of the spherical support 2 is in contact with the lower surface of the positioning plate 15, it is easy to level the spherical support 2.

[0042] like Figure 2 As shown, the driving mechanism 3 includes a driving rod 311, which has a circular cross-section and is arranged vertically. The top end of the positioning rod 14 is fixedly connected to the bottom end of the driving rod 311. A through groove 312 is provided on the positioning block 13. The through groove 312 has a square cross-section and extends vertically. The driving rod 311 is slidably arranged in the through groove 312 in the vertical direction. A driving groove 313 is provided on the inner wall of the through groove 312. The driving groove 313 has a square cross-section and extends vertically.

[0043] like Figure 2 and Figure 3As shown, a drive block 314 is rotatably disposed within the drive groove 313. The drive block 314 has a circular cross-section, and a drive rod 311 passes through the drive block 314. Multiple threaded blocks 315 are fixedly connected to the drive rod 311, and multiple threaded grooves 316 are formed on the drive block 314. The multiple threaded blocks 315 and multiple threaded grooves 316 are arranged in a one-to-one correspondence, and the threaded blocks 315 and threaded grooves 316 cooperate with each other. A drive assembly 32 for driving the drive block 314 to rotate is provided on the drive block 314, and a guide assembly 33 for guiding the drive rod 311 is provided on the drive block 314. When it is necessary to drive the positioning rod 14 to move in the vertical direction, the drive assembly 32 first drives the drive block 314 to rotate, and the drive block 314 drives the drive rod 311 to move in the vertical direction, thereby facilitating the movement of the positioning rod 14 in the vertical direction.

[0044] like Figure 2 As shown, the drive assembly 32 includes a rotating shaft 321 with a circular cross-section and arranged horizontally. The rotating shaft 321 is rotatably mounted on the drive block 314 via bearings. One end of the rotating shaft 321 is fixedly connected to a turntable 322, which also has a circular cross-section. The other end of the rotating shaft 321 is fixedly connected to a first bevel gear 323. A second bevel gear 324 is fitted and fixed on the drive block 314, and the first bevel gear 323 meshes with the second bevel gear 324. When it is necessary to drive the drive block 314 to rotate, the operator manually drives the turntable 322 to rotate. The turntable 322 drives the rotating shaft 321 to rotate, which in turn drives the first bevel gear 323 to rotate. The first bevel gear 323 then drives the second bevel gear 324 to rotate, thus facilitating the rotation of the drive block 314.

[0045] like Figure 2 As shown, the guide assembly 33 includes a guide rod 331. The guide rod 331 has a square cross-section and is arranged vertically. The bottom end of the guide rod 331 is fixedly connected to the end of the drive rod 311 away from the positioning rod 14. A guide groove 332 is provided on the positioning block 13. The guide groove 332 has a square cross-section and extends vertically. The guide groove 332 is connected to the through groove 312. The guide rod 331 is slidably disposed on the inner wall of the guide groove 332 in the vertical direction. When the positioning rod 14 moves in the vertical direction, the guide rod 331 helps to reduce the possibility of the positioning rod 14 rotating, thereby facilitating the positioning rod 14 to perform translational movement in the vertical direction.

[0046] like Figure 1As shown, adjacent positioning plates 15 are connected by a connecting plate 131, which has a square cross-section. One support column 1 is equipped with a lifting mechanism 41 for driving the positioning plates 15 to move vertically, and the other support columns 1 are equipped with guide members 42 for guiding the positioning plates 15. When leveling the spherical support 2, the lifting mechanism 41 drives the positioning plates 15 to move, facilitating the adjustment of the position of the spherical support 2 when it abuts against the positioning plate 15, thus facilitating the adjustment of the vertical orientation of the spherical support 2 after leveling.

[0047] like Figure 1 As shown, the lifting mechanism 41 includes a lead screw 411. A placement groove 412 is provided on one side of the support column 1. The lead screw 411 is arranged vertically, and its two ends are rotatably mounted on the inner wall of the placement groove 412 via bearings. The lead screw 411 passes through the positioning plate 15 and is threadedly engaged with the positioning plate 15. A motor 413 is bolted to one side of the support column 1. The output shaft of the motor 413 is fixedly connected to a third bevel gear 414. A fourth bevel gear 415 is sleeved and fixed on the lead screw 411, and the third bevel gear 414 meshes with the fourth bevel gear 415. When it is necessary to drive the positioning plate 15 to move vertically, the output shaft of the motor 413 is started to rotate, and the motor 413 drives the lead screw 411 to rotate, thereby facilitating the movement of the positioning plate 15 vertically.

[0048] like Figure 1 As shown, the guide member 42 includes a guide post 421, which is arranged vertically. Both ends of the guide post 421 are fixedly connected to the inner wall of the placement groove 412. The guide post 421 passes through the positioning plate 15, and the guide post 421 and the positioning plate 15 slide in a vertical direction. When the positioning plate 15 moves vertically, the guide post 421 helps to reduce the possibility of the positioning plate 15 shifting, thereby facilitating the translational movement of the positioning plate 15 in the vertical direction.

[0049] like Figure 2 and Figure 4As shown, a through hole 431 is provided on the upper surface of the longitudinal support 12. The cross-section of the through hole 431 is square and extends vertically. The positioning block 13 is slidably disposed on the inner wall of the through hole 431 along the length of the longitudinal support 12. A rack 432 is fixedly connected to the inner wall of the through hole 431. The rack 432 is disposed along the length of the longitudinal support 12. A mounting groove 433 is provided on one side of the positioning block 13. The mounting groove 433 extends vertically. A gear 434 is rotatably disposed in the mounting groove 433 through a bearing. The gear 434 is disposed horizontally and engages with the rack 432. Multiple baffles 435 are fixedly connected to the positioning block 13. The baffles 435 are square and can abut against the top of the longitudinal support 12. A limiting mechanism 44 is provided on the positioning block 13 for limiting the position of the gear 434.

[0050] When it is necessary to adjust the position of the positioning block 13, first cancel the limiting effect of the limiting mechanism 44 on the gear 434. At this time, the gear 434 and the rack 432 can be moved manually by the operator. When the positioning block 13 is adjusted to the correct position, the limiting mechanism 44 can be used to limit the positioning block 13.

[0051] like Figure 4 As shown, the limiting mechanism 44 includes a limiting block 441 with a triangular cross-section. The limiting block 441 is slidably disposed on the inner wall of the mounting groove 433 in the vertical direction and can be inserted into the tooth groove of the gear 434. A vertical block 442 is slidably disposed on the inner wall of the mounting groove 433 in the vertical direction. The vertical block 442 has a square cross-section and is disposed in the vertical direction. The vertical block 442 is fixedly connected to the limiting block 441. A handle 443 is fixedly connected to one side of the vertical block 442. The handle 443 is square. A spring 444 is disposed in the mounting groove 433 in the vertical direction. One end of the spring 444 is fixedly connected to the inner wall of the mounting groove 433, and the other end of the spring 444 is fixedly connected to the vertical block 442.

[0052] When it is necessary to limit the positioning block 13, the limiting block 441 and the elastic force of the spring 444 allow the limiting block 441 to be inserted into the tooth groove of the gear 434, thus facilitating the limitation of the positioning block 13. When it is necessary to release the limitation of the positioning block 13 by the limiting block 441, the manual drive handle 443 is moved upward. At this time, the spring 444 is in a compressed state. When the limiting block 441 separates from the tooth groove of the gear 434, the limiting effect of the limiting mechanism 44 on the positioning block 13 can be easily released.

[0053] This application also discloses a construction method for an adjustable support-assisted spherical bearing for cast-in-place box girders, including the following steps:

[0054] S1: First, manually adjust the position of the two horizontal supports 11 so that the lateral position of the positioning rod 14 matches the two sides of the spherical support 2, and then tighten the bolts to fix it.

[0055] S2: Lift the handle 443 to separate the limit block 441 from the gear 434. At this time, the operator manually drives the positioning block 13 to move. When the positioning rod 14 is aligned with the spherical support 2, release the handle 443. Under the elastic force of the spring 444, the limit block 441 is inserted into the tooth groove of the gear 434.

[0056] S3: Fix the positioning rod 14 to the spherical support 2;

[0057] S4: Start motor 413 drives lead screw 411 to rotate, lead screw 411 drives multiple positioning plates 15 to move and abut against spherical support 2;

[0058] S5: The operator manually drives the turntable 322 to rotate, and the positioning rod 14 drives the spherical support 2 to move. When all four corners of the spherical support 2 abut against the positioning plate 15, the spherical support 2 is in a horizontal state.

[0059] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A construction device for adjustable support-assisted spherical bearings of cast-in-place box girders, characterized in that: The device includes four pillars (1), with spherical supports (2) arranged between the four pillars (1). Two horizontal supports (11) are fixedly connected to each pillar (1), and two vertical supports (12) are slidably arranged on the two horizontal supports (11). The vertical supports (12) are detachably connected to the horizontal supports (11) by bolts. Multiple positioning blocks (13) are slidably arranged on the vertical supports (12), and positioning rods (14) are slidably arranged on the positioning blocks (13). The side of the positioning rods (14) away from the positioning blocks (13) is fixedly connected to the spherical supports (2). A positioning plate (15) is slidably arranged on each pillar (1), and the positioning plate (15) can abut against the spherical supports (2). A driving mechanism (3) for driving the positioning rods (14) to move in the vertical direction is provided on each positioning block (13). The two adjacent positioning plates (15) are connected by a connecting plate (131). One of the pillars (1) is provided with a lifting mechanism (41) for driving the positioning plate (15) to move in the vertical direction, and the other pillars (1) are provided with guide members (42) for guiding the positioning plate (15). The lifting mechanism (41) includes a lead screw (411), which is rotatably mounted on the support column (1). The lead screw (411) is threadedly engaged with the positioning plate (15). A motor (413) is mounted on the support column (1). The output shaft of the motor (413) is fixedly connected to a third bevel gear (414). A fourth bevel gear (415) is sleeved and fixed on the lead screw (411). The third bevel gear (414) meshes with the fourth bevel gear (415). The guide member (42) includes a guide post (421), which is fixedly connected to the support column (1) and slides with the positioning plate (15).

2. The adjustable construction device for the cast-in-place box girder ball-type support according to claim 1, characterized in that: The driving mechanism (3) includes a driving rod (311), a positioning rod (14) fixedly connected to the driving rod (311), a through groove (312) on the positioning block (13), and the driving rod (311) slidably disposed in the through groove (312); a driving groove (313) is provided on the inner wall of the through groove (312), and a driving block (314) is rotatably disposed on the inner wall of the driving groove (313), and the driving rod (311) passes through the driving block (314). The drive rod (311) is fixedly connected with a plurality of threaded blocks (315), and the drive block (314) is provided with a plurality of threaded grooves (316), with the plurality of threaded blocks (315) and the plurality of threaded grooves (316) corresponding to each other; the drive block (314) is provided with a drive assembly (32) for driving the drive block (314) to rotate, and the drive block (314) is provided with a guide assembly (33) for guiding the drive rod (311).

3. The adjustable construction device for the cast-in-place box girder ball-type support according to claim 2, characterized in that: The drive assembly (32) includes a rotating shaft (321) rotatably mounted on the drive block (314). One end of the rotating shaft (321) is fixedly connected to a turntable (322), and the other end of the rotating shaft (321) is fixedly connected to a first bevel gear (323). A second bevel gear (324) is sleeved and fixed on the drive block (314), and the first bevel gear (323) meshes with the second bevel gear (324).

4. The adjustable construction device for the cast-in-place box girder ball-type support according to claim 3, characterized in that: The guide assembly (33) includes a guide rod (331), which is fixedly connected to the end of the drive rod (311) away from the positioning rod (14). The positioning block (13) has a guide groove (332) which is connected to the through groove (312). The guide rod (331) is slidably disposed in the guide groove (332).

5. The adjustable construction device for the cast-in-place box girder ball-type support according to claim 4, characterized in that: The longitudinal support (12) has a through hole (431), and the positioning block (13) is slidably disposed on the inner wall of the through hole (431). A rack (432) is fixedly connected to the inner wall of the through hole (431). A mounting groove (433) is provided on one side of the positioning block (13). A gear (434) is rotatably disposed in the mounting groove (433). The gear (434) cooperates with the rack (432). A plurality of baffles (435) are fixedly connected to the positioning block (13). The baffles (435) can abut against the longitudinal support (12). A limiting mechanism (44) for limiting the gear (434) is provided on the positioning block (13).

6. The adjustable construction device for the cast-in-place box girder ball-type support according to claim 5, characterized in that: The limiting mechanism (44) includes a limiting block (441), which is slidably disposed on the inner wall of the mounting groove (433). The limiting block (441) can be inserted into the tooth groove of the gear (434). A vertical block (442) is slidably disposed on the inner wall of the mounting groove (433). The vertical block (442) is fixedly connected to the limiting block (441). A handle (443) is fixedly connected to one side of the vertical block (442). A spring (444) is disposed in the mounting groove (433). One end of the spring (444) is fixedly connected to the inner wall of the mounting groove (433), and the other end of the spring (444) is fixedly connected to the vertical block (442).

7. A construction method of a ball-type support of a cast-in-place box girder assisted by an adjustable support, based on the construction device of the ball-type support of the cast-in-place box girder assisted by the adjustable support according to claim 6, characterized in that: The construction steps include the following: S1: First, manually adjust the position of the two horizontal supports (11) so that the lateral position of the positioning rod (14) matches the two sides of the spherical support (2), and then tighten the bolts to fix it. S2: Lift the handle (443) to separate the limit block (441) from the gear (434). At this time, the operator manually drives the positioning block (13) to move. When the positioning rod (14) is aligned with the spherical support (2), release the handle (443). The limit block (441) is inserted into the tooth groove of the gear (434) under the elastic force of the spring (444). S3: Fix the positioning rod (14) to the spherical support (2); S4: start the motor (413) to drive the screw rod (411) to rotate, the screw rod (411) drives the plurality of positioning plates (15) to move and abut against the spherical support (2); S5: the operator manually drives the rotating disc (322) to rotate, the positioning rod (14) drives the spherical support (2) to move, when the four corners of the spherical support (2) all abut against the positioning plates (15), the spherical support (2) is in a horizontal state.

Images