A support device for incremental launching of bridge construction

Abstract

The present invention relates to the technical field of bridge construction, and specifically relates to a support device for incremental launching of bridge construction, including an incremental launching displacement regulation component. An auxiliary support component is arranged on the front side of the incremental launching displacement regulation component. Pressing components are correspondingly arranged on the left and right of the rear side surface of the incremental launching displacement regulation component. Jacks for incremental launching are correspondingly arranged on the front and rear of the end surface of the incremental launching displacement regulation component; in the incremental launching displacement regulation component, the horizontal displacement of the incremental launching pressure seat can be regulated, so that the convenience of the incremental launching pressure seat during incremental launching displacement regulation is high. Through the auxiliary support component, the reinforcement support of the incremental launching pressure seat can be realized, so that the support stability of the incremental launching pressure seat after displacement regulation is high. Moreover, the auxiliary support component is detachably arranged with the bearing plate, which can make the flexibility of the auxiliary support component relatively high and the overall use effect better.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge construction, and particularly to a support device for incremental launching in bridge construction. Background Technique

[0002] The incremental launching construction method is mostly applied to the construction of prestressed reinforced concrete constant cross-section continuous beam bridges and cable-stayed bridges. Specifically, it is a construction method in which the beam body is cast or assembled section by section at the bridgehead, and longitudinally jacked by jacks, so that the beam body is in place through the temporary sliding bearing surfaces at the top of each pier. In incremental launching construction, a construction site is set up behind the abutment, the beam body is cast in sections, and the cast sections are connected into a whole with longitudinal prestressed tendons. A steel guiding beam with a specified proportion of the incremental launching span is installed in front of the beam body, and then the beam body is jacked forward out of the construction site by applying force with a horizontal jack. Repeating these processes can complete the construction of the entire beam body.

[0003] In the era of the rapid development of construction projects, the incremental launching construction technology is widely used in the fields of bridge and building construction. In incremental launching construction operations, due to the problem of the height difference of the curved surface existing in the bridge and building structures themselves, shims are installed under the jacks to meet the horizontal height problem of the jacks. Since the jacks are heavy themselves, the space for installing the jacks under the bridge to be launched is limited, it is difficult for construction workers to move the jacks, and the shimming work of the jacks needs to be continuously carried out during construction, resulting in a reduction in the construction efficiency of bridge incremental launching, time-consuming and laborious, with huge time costs and labor costs. Moreover, the mobility during the use of incremental launching construction is poor, and the auxiliary protection and support stability of the jacks are also poor. Therefore, a support device for incremental launching in bridge construction is needed to improve the above problems. Summary of the Invention

[0004] In order to solve the problems of poor mobility during the use of incremental launching construction and poor auxiliary protection and support stability of the jacks, the present invention provides a computer case protection device to solve the above problems.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A support device for incremental launching in bridge construction, including an incremental launching displacement regulation component, an auxiliary support component is arranged on the front side of the incremental launching displacement regulation component, pressing components are correspondingly arranged on the left and right on the rear side surface of the incremental launching displacement regulation component, and incremental launching jacks are correspondingly arranged on the front and rear on the end surface of the incremental launching displacement regulation component;

[0007] The push displacement control component includes a positioning loading frame, a receiving plate is correspondingly arranged on the left and right sides of the front side of the positioning loading frame, a receiving slide groove is correspondingly opened on the upper and lower inner side walls of the receiving plate, a push seat is installed on the receiving plate through the receiving slide groove, a connecting seat is correspondingly arranged on the left and right sides of the back side of the push seat, a hydraulic push rod is rotatably installed on the connecting seat, a connecting groove is opened on the front side of the push seat, and a receiving plate is installed on the push seat through the connecting groove;

[0008] The auxiliary support assembly includes a transfer positioning plate installed on the receiving plate, receiving rods are correspondingly arranged on the left and right sides of the lower side of the transfer positioning plate, and connecting plates are correspondingly arranged on the left and right sides of the middle of the front side of the receiving rod, a hydraulic telescopic rod is rotatably installed between the two groups of connecting plates, a support rod is rotatably installed at the lower end of the receiving rod, and a supporting bottom plate is rotatably installed at the lower end of the support rod;

[0009] The support and pressure assembly includes a first adapter plate correspondingly arranged on the left and right sides of the back of the top push and pressure seat, a first threaded sleeve is installed on the first adapter plate, a matching adjusting screw is installed on the internal thread of the first threaded sleeve, a matching second threaded sleeve is installed on the other end of the adjusting screw, a second adapter plate is arranged at one end of the second threaded sleeve, and a regulating ring is installed in the middle of the adjusting screw;

[0010] The push jack is arranged on the end surface of the push pressure seat in front and back correspondence, the end surface of the push jack is provided with a supporting top plate, the lower side of the supporting top plate is rotatably installed with an adjustable telescopic rod, the lower side of the push jack is provided with a supporting bottom plate in left and right correspondence, and a receiving seat is provided on the end surface of the supporting bottom plate and at one end away from the push jack.

[0011] As a preferred solution of the present invention, matching supporting slide plates are provided on the left and right side surfaces of the push and pressure seat corresponding to the receiving slide groove, and the push and pressure seat is slidably connected to the receiving slide groove through the supporting slide plate.

[0012] As a preferred solution of the present invention, one end of the hydraulic push rod away from the top pushing seat is rotatably connected to the positioning loading frame through a transfer seat.

[0013] As a preferred solution of the present invention, a connection column is provided on the top pushing seat and located inside the connection groove, and the receiving plate is connected to the top pushing seat through the connection column using a fixing nut.

[0014] As a preferred solution of the present invention, the transfer positioning plate is fixedly connected to the supporting plate by fixing bolts, the side cross-section of the transfer positioning plate is arranged in an "L"-shaped structure, and the transfer positioning plate is arranged in the middle of the front side and on the left and right sides of the back side of the supporting plate.

[0015] As a preferred embodiment of the present invention, one end of the hydraulic telescopic rod away from the receiving rod is correspondingly rotatably connected to the middle of the upper side of the support rod, and the lower side of the support base plate is provided with a serrated structure.

[0016] As a preferred embodiment of the present invention, positioning holes are formed on both the first adapter plate and the second adapter plate, and the first adapter plate is connected to the top push seat through the positioning holes by fixing bolts.

[0017] As a preferred embodiment of the present invention, the adjusting screw rod is provided with opposite thread structures on both sides based on the adjusting ring as the center.

[0018] As a preferred embodiment of the present invention, a fixed connection is provided between the supporting base plate and the top push seat, and one ends of the two adjustable telescopic rods away from the supporting top plate are respectively rotatably connected to the receiving seats on both sides of the supporting base plate.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] 1. In the present invention, the positioning and loading frame can be used to realize the positioning and support of the top push seat, so that the top push seat has a better top push effect during bridge construction. And in the top push displacement control assembly, the horizontal displacement control of the top push seat can be realized, so that the convenience of the top push seat during top push displacement control is high. At the same time, under the action of the loading chute and the supporting slide plate, the top push seat has high use stability during control and top push.

[0021] 2. In the present invention, the auxiliary support assembly can be used to realize the reinforcement and support of the top push seat, so that the support stability of the top push seat after displacement control is high. And the auxiliary support assembly is detachably arranged with the receiving plate, which can make the use flexibility of the auxiliary support assembly relatively high and the overall use effect better. By setting the bottom of the support base plate with a serrated structure, the friction between the support base plate and the contact surface can be increased, making the support stability of the auxiliary support assembly higher during use.

[0022] 3. In the present invention, the length of the support and pressure assembly itself can be adjusted, so that the whole can better adapt to the control of the top push seat, and the support and pressure assembly can better position and support the top push seat, effectively improving the top push stability of the top push seat and making the safety of the top push seat during construction top push high. By setting the threads at both ends of the adjusting screw rod to be opposite and correspondingly adapted to the first thread sleeve and the second thread sleeve, the displacement control convenience of the first thread sleeve and the second thread sleeve can be high.

[0023] 4. In the present invention, by adding a frame to reinforce the bottom of the push jack, the bottom force-bearing area of ​​the push jack during pushing can be increased, thereby improving the use effect of the push jack. In addition, an adjustable telescopic rod is provided on the push jack to achieve reinforced support for the push jack, thereby making the construction and use of the push jack safer. By reinforcing both sides of the push jack with the adjustable telescopic rod, not only can the lateral deviation of the push jack be effectively avoided, but also the reinforced support for the push jack can be improved, thereby making the support firmness and safety of the push jack high. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the main structure of the push displacement control assembly of the present invention;

[0026] Figure 3 It is a partial structural schematic diagram of the push displacement control component of the present invention;

[0027] Figure 4 It is a schematic diagram of the local structure of the push displacement control component of the present invention;

[0028] Figure 5 It is a rear view structural schematic diagram of the push displacement control assembly of the present invention;

[0029] Figure 6 It is a schematic diagram of the structure of the support and pressure assembly of the present invention;

[0030] Figure 7 This is a schematic diagram of the front view of the auxiliary support assembly of the present invention;

[0031] Figure 8 It is a schematic diagram of the rear view structure of the auxiliary support assembly of the present invention.

[0032] In the figure: 1. Push displacement control assembly; 101. Positioning loading frame; 102. Loading plate; 103. Loading slide groove; 104. Pushing seat; 105. Connecting seat; 106. Hydraulic push rod; 107. Connecting groove; 108. Attaching plate; 109. Supporting slide plate; 110. Transfer seat; 111. Connecting column; 2. Auxiliary support assembly; 201. Transfer positioning plate; 202. Attaching rod; 203. Connecting plate; 2 04, hydraulic telescopic rod; 205, support rod; 206, support base plate; 3, support and pressure assembly; 301, first adapter plate; 302, first threaded sleeve; 303, adjusting screw; 304, second threaded sleeve; 305, second adapter plate; 306, regulating ring; 307, positioning hole; 4, push jack; 401, supporting top plate; 402, adjustable telescopic rod; 403, supporting base plate; 404, receiving seat. Implementation

[0033] Next, in combination with the accompanying drawings in the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0034] Embodiment: Please refer to Figure 1-8 A support device for incremental launching in bridge construction as shown, including an incremental launching displacement regulation component 1. An auxiliary support component 2 is arranged on the front side of the incremental launching displacement regulation component 1. Pressing support components 3 are correspondingly arranged on the left and right of the rear side surface of the incremental launching displacement regulation component 1. Jacks for incremental launching 4 are correspondingly arranged on the front and rear of the end surface of the incremental launching displacement regulation component 1.

[0035] In this embodiment, referring to Figure 1-5 As shown, the incremental launching displacement regulation component 1 includes a positioning loading frame 101. Loading plates 102 are correspondingly arranged on the left and right of the front side of the positioning loading frame 101. Loading chutes 103 are correspondingly opened on the upper and lower inner side walls of the loading plates 102. A pushing pressure seat 104 is installed on the loading plates 102 through the loading chutes 103. Connecting seats 105 are correspondingly arranged on the left and right of the back surface of the pushing pressure seat 104. Hydraulic push rods 106 are rotatably installed on the connecting seats 105. A connecting groove 107 is opened on the front surface of the pushing pressure seat 104. A receiving plate 108 is installed on the pushing pressure seat 104 through the connecting groove 107. After the regulation of the pushing pressure seat 104 is completed, the receiving plate 108 is installed inside the connecting groove 107 to realize the installation and positioning of the receiving plate 108 and the pushing pressure seat 104. Through the positioning loading frame 101, the positioning and support of the pushing pressure seat 104 can be realized, so that the pushing pressure seat 104 has a better incremental launching effect during bridge construction. And in the incremental launching displacement regulation component 1, the horizontal displacement regulation of the pushing pressure seat 104 can be realized, so that the convenience of the pushing pressure seat 104 during incremental launching displacement regulation is high. At the same time, under the action of the loading chutes 103 and the supporting sliding plates 109, the pushing pressure seat 104 has high use stability during regulation and incremental launching.

[0036] The left and right sides of the top push seat 104 are provided with matching supporting slides 109 corresponding to the receiving slide 103, the top push seat 104 is slidably connected with the receiving slide 103 through the supporting slide 109, the end of the hydraulic push rod 106 away from the top push seat 104 is rotatably connected with the positioning loading frame 101 through the adapter 110, and the top push seat 104 and the inside of the connecting groove 107 are provided with a connecting column 111, and the receiving plate 108 is connected with the top push seat 104 through the connecting column 111 with a fixing nut. The top push seat 104 can be stably and conveniently regulated by the supporting slide 109 and the receiving slide 103, and the displacement regulation of the top push seat 104 can be simple and convenient by the hydraulic push rod 106.

[0037] In this embodiment, refer to Figure 1 , 7 As shown in Figure 8, the auxiliary support assembly 2 includes a transfer positioning plate 201 installed on the receiving plate 108, and a receiving rod 202 is correspondingly arranged on the left and right sides of the lower side of the transfer positioning plate 201, and a connecting plate 203 is correspondingly arranged on the left and right sides of the front middle of the receiving rod 202, and a hydraulic telescopic rod 204 is rotatably installed between the two groups of connecting plates 203, and a support rod 205 is rotatably installed on the lower end of the receiving rod 202, and a supporting bottom plate 206 is rotatably installed on the lower end of the support rod 205; the auxiliary support assembly 2 can be used to reinforce the support of the top pushing seat 104, so that the support stability of the top pushing seat 104 after displacement regulation is high, and the auxiliary support assembly 2 and the receiving plate 108 are detachable, which can make the auxiliary support assembly 2 more flexible to use and the overall use effect better.

[0038] The transfer positioning plate 201 is fixedly connected to the receiving plate 108 by fixing bolts, and the side cross section of the transfer positioning plate 201 is set in an "L"-shaped structure. The transfer positioning plate 201 is set in the middle of the front and the left and right sides of the back of the receiving plate 108. The end of the hydraulic telescopic rod 204 away from the receiving rod 202 is rotatably connected to the middle of the upper side of the support rod 205, and the lower side of the support bottom plate 206 is set in a serrated structure. By setting the bottom of the support bottom plate 206 in a serrated structure, the friction between the support bottom plate 206 and the opposite side can be increased, so that the support stability of the auxiliary support assembly 2 is higher when in use.

[0039] In this embodiment, refer to Figure 1 , 5As shown in Figure 6, the supporting and pressing component 3 includes a first adapter plate 301 which is correspondingly arranged on the left and right sides of the back side of the top pushing and pressing seat 104, and a first threaded sleeve 302 is installed on the first adapter plate 301. The internal thread of the first threaded sleeve 302 is installed with a matching adjusting screw 303, and the other end of the adjusting screw 303 is threadedly installed with a matching second threaded sleeve 304, and one end of the second threaded sleeve 304 is provided with a second adapter plate 305, and the middle of the adjusting screw 303 is installed with a regulating ring 306; the length of the supporting and pressing component 3 itself can be adjusted, so that the whole can better adapt to the adjustment of the top pushing and pressing seat 104, so that the supporting and pressing component 3 can better position and support the top pushing and pressing seat 104, effectively improve the top pushing stability of the top pushing and pressing seat 104, and make the top pushing and pressing seat 104 safer during construction.

[0040] The first adapter plate 301 and the second adapter plate 305 are both provided with positioning holes 307, and the first adapter plate 301 is connected to the top push seat 104 by fixing bolts through the positioning holes 307. The adjusting screw 303 is arranged with opposite structures of threads on both sides based on the regulating ring 306 as the center. By setting the threads at both ends of the adjusting screw 303 in opposite directions and correspondingly matching with the first threaded sleeve 302 and the second threaded sleeve 304, the displacement regulation of the first threaded sleeve 302 and the second threaded sleeve 304 can be made more convenient.

[0041] In this embodiment, refer to Figure 1-3 As shown, the top push jack 4 is arranged on the end surface of the top push seat 104 in a front-to-back correspondence manner, the end surface of the top push jack 4 is provided with a supporting top plate 401, the lower side of the supporting top plate 401 is provided with an adjustable telescopic rod 402 which is rotatably installed in correspondence with the left and right sides, the lower side of the top push jack 4 is provided with a supporting bottom plate 403 in correspondence with the left and right sides, and a receiving seat 404 is provided on the end surface of the supporting bottom plate 403 and at one end away from the top push jack 4. By adding a frame to the bottom of the top push jack 4 for reinforcement, the bottom force bearing area of ​​the top push jack 4 during top push can be increased, and the use effect of the top push jack 4 can be improved, and the adjustable telescopic rod 402 is provided on the top push jack 4 to achieve reinforced support for the top push jack 4, so that the construction and use safety of the top push jack 4 is high.

[0042] The supporting bottom plate 403 is fixedly connected to the top push seat 104, and the ends of the two sets of adjustable telescopic rods 402 away from the supporting top plate 401 are rotatably connected to the receiving seats 404 on the two sides of the supporting bottom plates 403. The adjustable telescopic rods 402 are used to reinforce the two sides of the top push jack 4, which can not only effectively prevent the side deviation of the top push jack 4, but also improve the reinforcement support of the top push jack 4, so that the support firmness and safety of the top push jack 4 are high.

[0043] When the supporting device for pushing bridge construction of this scheme is working, the positioning loading frame 101 is placed in the construction positioning area, and then the position of the pushing seat 104 can be adjusted by the hydraulic push rod 106 to realize the pushing of the front side construction. At the same time, since the pushing seat 104 is displaced and regulated under the action of the supporting slide plate 109 and the supporting slide groove 103, the top positioning position of the pushing seat 104 can be regulated, and the upper side pushing jack 4 can be better positioned for bridge construction. The auxiliary support assembly 2 is installed and connected with the receiving plate 108 through the transfer positioning plate 201, so that the auxiliary support assembly 2 supports and positions the receiving plate 108. When the auxiliary support assembly 2 is in use, the support rod 205 is adjusted by the hydraulic telescopic rod 204 to realize the contact between the support bottom plate 206 and the ground, so that the auxiliary support assembly 2 reinforces the support of the pushing seat 104 during use, so that the stability of the pushing seat 104 during use is high;

[0044] The first threaded sleeve 302 and the top push seat 104 are connected by the first adapter plate 301, and the adjusting screw 303 is rotated and controlled by the adjusting ring 306. Under the action of the adjusting screw 303, the distance between the two ends of the first threaded sleeve 302 and the second threaded sleeve 304 is enlarged to adapt to the position adjustment of the top push seat 104, and under the action of the supporting and pressing component 3, the stability of the front side of the top push seat 104 during top pushing can be further enhanced, making the top push seat 104 safer during top pushing construction. The length of the supporting and pressing component 3 itself can be adjusted, so that the whole can better adapt to the adjustment of the top push seat 104, so that the supporting and pressing component 3 can better position and support the top push seat 104, effectively improving the top push stability of the top push seat 104, and making the top push seat 104 safer during top pushing construction;

[0045] When the position adjustment of the jacking seat 104 is completed, the construction object above the jacking seat 104 is pushed by the jacking jack 4. During the pushing process of the jacking jack 4, the adjustable telescopic rod 402 is adjusted accordingly. When the jacking jack 4 completes the positioning and fixing, the adjustable telescopic rod 402 is locked to achieve the reinforcement support of the jacking jack 4, so that the jacking jack 4 has high stability during the construction and the pushing safety of the construction process is improved. The two sides of the jacking jack 4 are reinforced by the adjustable telescopic rod 402, which can not only effectively avoid the lateral deviation of the jacking jack 4, but also improve the reinforcement support of the jacking jack 4, so that the support firmness and safety of the jacking jack 4 are high.

[0046] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A support device for incremental launching in bridge construction, including an incremental launching displacement regulation component (1). It is characterized in that: An auxiliary support component (2) is arranged on the front side of the incremental launching displacement regulation component (1), support and pressure components (3) are arranged corresponding to the left and right on the rear side surface of the incremental launching displacement regulation component (1), and incremental launching jacks (4) are arranged corresponding to the front and rear on the end surface of the incremental launching displacement regulation component (1); The incremental launching displacement regulation component (1) includes a positioning loading frame (101), bearing plates (102) are arranged corresponding to the left and right on the front side of the positioning loading frame (101), bearing chutes (103) are arranged corresponding to the upper and lower on the inner side wall of the bearing plates (102), a pushing pressure seat (104) is installed on the bearing plates (102) through the bearing chutes (103), connecting seats (105) are arranged corresponding to the left and right on the back surface of the pushing pressure seat (104), hydraulic push rods (106) are rotatably installed on the connecting seats (105), a connecting groove (107) is arranged on the front surface of the pushing pressure seat (104), and a receiving plate (108) is installed on the pushing pressure seat (104) through the connecting groove (107); The auxiliary support component (2) includes a transfer positioning plate (201) installed on the receiving plate (108), receiving rods (202) are arranged corresponding to the left and right on the lower side of the transfer positioning plate (201), connecting plates (203) are arranged corresponding to the left and right in the middle of the front surface of the receiving rods (202), a hydraulic telescopic rod (204) is rotatably installed between the two groups of connecting plates (203), a support rod (205) is rotatably installed at the lower end of the receiving rod (202), and a support bottom plate (206) is rotatably installed at the lower end of the support rod (205); The support and pressure component (3) includes first transfer discs (301) arranged corresponding to the left and right on the back surface of the pushing pressure seat (104), first threaded sleeves (302) are installed on the first transfer discs (301), an adjusting screw rod (303) with a matching thread is installed inside the first threaded sleeve (302), the other end of the adjusting screw rod (303) is installed with a second threaded sleeve (304) with a matching thread, a second transfer disc (305) is arranged at one end of the second threaded sleeve (304), and a regulation ring (306) is installed in the middle of the adjusting screw rod (303); The incremental launching jacks (4) are arranged corresponding to the front and rear on the end surface of the pushing pressure seat (104), a supporting top plate (401) is arranged on the end surface of the incremental launching jacks (4), adjustable telescopic rods (402) are rotatably installed corresponding to the left and right on the lower side of the supporting top plate (401), supporting bottom plates (403) are arranged corresponding to the left and right on the lower side of the incremental launching jacks (4), and a receiving seat (404) is arranged on the end surface of the supporting bottom plate (403) and at one end far away from the incremental launching jacks (4).

2. The support device for incremental launching in bridge construction according to claim 1, It is characterized in that: On the left and right sides of the pushing pressure seat (104), there are correspondingly arranged supporting sliding plates (109) adapted to the loading chute (103), and the pushing pressure seat (104) is slidably connected to the loading chute (103) through the supporting sliding plates (109).

3. The supporting device for jacking in bridge construction according to claim 1, characterized in that: One end of the hydraulic push rod (106) away from the pushing pressure seat (104) is rotatably connected to the positioning loading frame (101) through an adapter seat (110).

4. The supporting device for jacking in bridge construction according to claim 1, characterized in that: On the pushing pressure seat (104) and inside the connecting groove (107), there is a connecting column (111), and the receiving plate (108) is connected to the pushing pressure seat (104) through the connecting column (111) by using a fixing nut.

5. The supporting device for jacking in bridge construction according to claim 1, characterized in that: The transfer positioning plate (201) is fixedly connected to the receiving plate (108) through fixing bolts. The side cross-section of the transfer positioning plate (201) is arranged in an "L" shape, and the transfer positioning plate (201) is arranged at the middle of the front surface and the left and right sides of the back surface of the receiving plate (108).

6. The supporting device for jacking in bridge construction according to claim 1, characterized in that: One end of the hydraulic telescopic rod (204) away from the receiving rod (202) is correspondingly rotatably connected to the middle of the upper side of the supporting rod (205), and the lower side surface of the supporting bottom plate (206) is arranged in a serrated structure.

7. The supporting device for jacking in bridge construction according to claim 1, characterized in that: Both the first transfer disk (301) and the second transfer disk (305) are provided with positioning holes (307), and the first transfer disk (301) is connected to the pushing pressure seat (104) through the positioning holes (307) by using fixing bolts.

8. The supporting device for jacking in bridge construction according to claim 1, characterized in that: The adjusting screw rod (303) has opposite thread structures on both sides based on the regulating ring (306) as the center.

9. The supporting device for jacking in bridge construction according to claim 1, characterized in that: A fixed connection is provided between the supporting bottom plate (403) and the pushing pressure seat (104). One end of each of the two adjustable telescopic rods (402) away from the supporting top plate (401) is respectively rotatably connected to the receiving seats (404) on both sides of the supporting bottom plate (403).

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