Jig frame device for pre-assembly of steel box girder

Abstract

The jig frame device comprises a supporting mechanism and a plurality of adjusting assemblies, the supporting mechanism comprises a plurality of supporting pieces, a plurality of first connecting pieces and a plurality of second connecting pieces, the multiple supporting pieces are arranged on a first plane in a rectangular array mode, and the multiple first connecting pieces are arranged on a second plane in a rectangular array mode; the first connecting piece is correspondingly connected with the two adjacent supporting pieces in the first direction, and the second connecting piece is correspondingly connected with the two adjacent supporting pieces in the second direction. The multiple adjusting assemblies and the multiple supporting pieces are arranged in a one-to-one correspondence mode, each adjusting assembly comprises a sleeve and a lead screw in threaded connection to one end of the sleeve, the sleeves are arranged on the supporting pieces in the mode that the positions are adjustable in the third direction, and the lead screws are exposed out of the supporting pieces and can move relative to the sleeves in the third direction under the action of screwing force; the support is used for supporting the pre-assembled steel box girder. According to the embodiment of the invention, the steel box girder is stably supported through the supporting mechanism, and the elevation or the pre-camber of the steel box girder is accurately adjusted through the cooperation of the supporting piece and the adjusting assembly.

Description

Technical Field

[0001] The present disclosure relates to the technical field of bridge engineering, and particularly to a jig device for pre-assembling steel box girders. Background Art

[0002] With the rapid development of bridge construction in China, steel box girders have been increasingly widely used due to their advantages such as convenient construction, excellent structural stress, short manufacturing cycle, environmental protection and recyclability. In particular, due to the structural characteristics of small plane curve radius, large elevation rise, and variable cross-section super-elevation of steel box girders, higher requirements are imposed on the control of the pre-assembly linear accuracy of steel box girders during the manufacturing process.

[0003] Currently, in the pre-assembly construction of steel box girders, the traditional jig device for pre-assembling steel box girders has a complex structure, long assembly and adjustment time, and limited elevation adjustment accuracy of the steel box girder during the pre-assembly construction of the steel box girder, resulting in an unsatisfactory control effect on the pre-assembly linear accuracy of the steel box girder.

[0004] Therefore, it is necessary to provide a new technical solution to improve one or more problems existing in the above solution.

[0005] It should be noted that the information disclosed in the above background art section is only used to enhance the understanding of the background of the present disclosure, and thus may include information that does not constitute the prior art known to those of ordinary skill in the art. Summary of the Utility Model

[0006] The purpose of the embodiments of the present disclosure is to provide a jig device for pre-assembling steel box girders, which can accurately adjust the elevation or pre-camber of the steel box girder.

[0007] According to the first aspect of the embodiments of the present disclosure, there is provided a jig device for pre-assembling steel box girders, including:

[0008] A support mechanism, including a plurality of support members, a plurality of first connectors, and a plurality of second connectors. The plurality of support members are arranged in a rectangular array on a first plane. The first connectors are correspondingly connected to two adjacent support members arranged along a first direction, and the second connectors are correspondingly connected to two adjacent support members arranged along a second direction;

[0009] A plurality of adjustment components, which are correspondingly arranged with the plurality of support members one by one. Each adjustment component includes a sleeve and a lead screw threadedly connected to one end of the sleeve. The sleeve is disposed on the support member in a position-adjustable manner along a third direction, and the lead screw is exposed outside the support member and can move relative to the sleeve along the third direction under the action of a screwing force;

[0010] Wherein, the third direction is the height direction of the support member, the first direction, the second direction and the third direction are perpendicular to each other in pairs, and the first plane is perpendicular to the third direction.

[0011] In an exemplary embodiment of the present disclosure, the support member includes a base and a support tube provided on the base. The axial direction of the support tube is arranged parallel to the third direction. The sleeve is axially position-adjustably sleeved in the support tube, and one end of the sleeve close to the lead screw is exposed outside the support tube.

[0012] In an exemplary embodiment of the present disclosure, a radially adjustable fixing member is provided on the tube wall of the support tube. Multiple groups of first connection holes are provided on the sleeve. The multiple groups of first connection holes are arranged at intervals along the circumferential direction of the sleeve, and multiple first connection holes in each group are arranged at intervals along the axial direction of the sleeve.

[0013] When at least part of the sleeve is accommodated in the support tube, the fixing member can extend into a corresponding first connection hole to fix the sleeve to the support tube.

[0014] In an exemplary embodiment of the present disclosure, a plurality of stiffening plates are provided on the outer wall of the support tube. The plurality of stiffening plates are arranged at intervals along the circumferential direction of the support tube. Each stiffening plate extends along the axial direction of the support tube, and one end of the stiffening plate is connected to the base.

[0015] In an exemplary embodiment of the present disclosure, a fastener is detachably provided on the stiffening plate. The first connecting member and the second connecting member are respectively detachably connected to the fasteners on the corresponding stiffening plates.

[0016] In an exemplary embodiment of the present disclosure, the stiffening plate includes a first stiffening portion and a second stiffening portion connected along the axial direction of the support tube. The first stiffening portion is connected to the support tube, and the second stiffening portion connects the support tube and the base.

[0017] Wherein, along the radial direction of the support tube, the width of the second stiffening portion is greater than the width of the first stiffening portion.

[0018] In an exemplary embodiment of the present disclosure, the sleeve includes a tube body and an annular connecting portion provided at one end of the tube body. The lead screw is threadedly connected to the annular connecting portion, and at least part of the lead screw can extend into the tube body.

[0019] In an exemplary embodiment of the present disclosure, the outer diameter of the annular connecting portion is greater than the outer diameter of the tube body.

[0020] When the sleeve moves towards the base, the annular connecting portion can abut against one end of the support tube away from the base to limit the sleeve in the axial direction of the support tube.

[0021] In an exemplary embodiment of the present disclosure, the inner diameter of the annular connecting portion is smaller than the inner diameter of the tube body.

[0022] In an exemplary embodiment of the present disclosure, the lead screw is provided with an auxiliary hole penetrating in its radial direction for installing an operating rod.

[0023] The technical solution provided by the present disclosure may include the following beneficial effects:

[0024] In the embodiments of the present disclosure, a stable support mechanism is formed by the cooperation of multiple support members, multiple first connecting members and multiple second connecting members to provide stable support for the steel box girder; the elevation or pre-camber of the steel box girder is accurately adjusted by the cooperation of multiple adjusting components respectively arranged on the multiple support members, that is, in the height direction of the support member, the position of the sleeve can be roughly adjusted relative to the support member first, and the positions of the adjusting sleeve and the lead screw in the height direction of the support tube can be adjusted, so as to realize the preliminary rough adjustment of the elevation or pre-camber of the steel box girder. Further, by screwing the lead screw relative to the sleeve, the length of the lead screw extending out of the sleeve is finely adjusted to accurately adjust the position of the lead screw in the height direction of the support tube, so as to realize the further fine adjustment of the elevation or pre-camber of the steel box girder; through the above rough adjustment process and fine adjustment process, the accurate adjustment of the elevation or pre-camber of the steel box girder can be realized, thereby improving the control effect of the pre-assembled linear accuracy of the steel box girder.

[0025] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present disclosure, and are used together with the specification to explain the principles of the present disclosure. Obviously, the accompanying drawings in the following description are only some embodiments of the present disclosure, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts.

[0027] Figure 1 Schematic diagram showing the structure of the falsework device for pre-assembling a steel box girder in an exemplary embodiment of the present disclosure Figure 1 ;

[0028] Figure 2 Schematic diagram showing the structures of the support member, the sleeve and the lead screw in an exemplary embodiment of the present disclosure;

[0029] Figure 3Schematic structural diagram of the support member in an exemplary embodiment of the present disclosure;

[0030] Figure 4 Schematic structural diagram of the casing in an exemplary embodiment of the present disclosure;

[0031] Figure 5 Schematic structural diagram of the lead screw in an exemplary embodiment of the present disclosure;

[0032] Figure 6 Schematic diagram showing the structure of the falsework device for pre-assembling steel box girders in an exemplary embodiment of the present disclosure Figure 2 ;

[0033] Figure 7 Schematic diagram showing the structure of the falsework device for pre-assembling steel box girders in an exemplary embodiment of the present disclosure when used for pre-assembling steel box girders Figure 1 ;

[0034] Figure 8 Schematic diagram showing the structure of the falsework device for pre-assembling steel box girders in an exemplary embodiment of the present disclosure when used for pre-assembling steel box girders Figure 2 ;

[0035] Figure 9 Schematic diagram showing the structure of the falsework device for pre-assembling steel box girders in an exemplary embodiment of the present disclosure when used for pre-assembling steel box girders Figure 3 。

[0036] Reference numerals: 100, support member; 110, base; 120, support pipe; 121, fixing member; 1201, second connection hole; 130, stiffening plate; 131, first stiffening portion; 132, second stiffening portion; 1301, first mounting hole; 200, first connecting member; 300, second connecting member; 400, adjusting assembly; 410, casing; 411, pipe body; 4110, first connection hole; 412, annular connection portion; 4121, internal thread; 420, lead screw; 421, auxiliary hole; 422, external thread; 500, steel box girder main body; 510, top plate unit; 520, web unit; 530, diaphragm unit; 540, bottom plate unit. Detailed implementation manners

[0037] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be more complete and comprehensive, and will fully convey the concept of the example embodiments to those skilled in the art. The features, structures, or characteristics described may be combined in any suitable manner in one or more embodiments.

[0038] In addition, the accompanying drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus repeated descriptions thereof will be omitted. Some of the block diagrams shown in the drawings are functional entities and do not necessarily correspond to physically or logically independent entities. These functional entities may be implemented in software form, or in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0039] In this exemplary embodiment, a falsework device for pre-assembling a steel box girder is provided. As shown in Figure 1 , the device includes a support mechanism and a plurality of adjusting components 400. The support mechanism includes a plurality of support members 100, a plurality of first connecting members 200, and a plurality of second connecting members 300. The plurality of support members 100 are arranged in a rectangular array on a first plane. The first connecting members 200 are correspondingly connected to two adjacent support members 100 arranged along a first direction. The second connecting members 300 are correspondingly connected to two adjacent support members 100 arranged along a second direction. The plurality of adjusting components 400 are provided in one-to-one correspondence with the plurality of support members 100. Each adjusting component 400 includes a sleeve 410 and a lead screw 420 threadedly connected to one end of the sleeve 410. The sleeve 410 is disposed on the support member 100 with its position adjustable along a third direction. The lead screw 420 is exposed outside the support member 100 and can move relative to the sleeve 410 along the third direction under the action of a screwing force. The lead screw 420 is used to support the pre-assembled steel box girder. Wherein, the third direction is the height direction of the support member 100; the first direction, the second direction, and the third direction are perpendicular to each other in pairs, and the first plane is perpendicular to the third direction; the first direction refers to the direction indicated by arrow ab in Figure 1 , the second direction refers to the direction indicated by arrow cd in Figure 1 , and the third direction refers to the direction indicated by arrow ef in Figure 1 .

[0040] It should be understood that in the falsework device of this embodiment at the assembly site, the height direction of the support member 100 is arranged parallel to the vertical direction. The elevation of the steel box girder can be understood as the positioning basis of the steel box girder in the vertical direction. By adjusting the positions of the sleeve 410 and the lead screw 420 in the height direction of the support member 100, the position of the top of the lead screw 420 in the height direction of the support member 100 can be adjusted. And the top of the lead screw 420 is the top of the falsework device and is used to support the steel box girder. That is, by precisely controlling the position of the top of the lead screw 420 in the height direction of the support member 100, the position of the bottom of the steel box girder in the height direction of the support member 100 can be precisely controlled, and thus the elevation or camber of the steel box girder can be controlled.

[0041] In the embodiments of the present disclosure, a stable support mechanism is formed by the cooperation of a plurality of support members 100, a plurality of first connecting members 200, and a plurality of second connecting members 300 to provide stable support for the steel box girder. Further, the elevation or camber of the steel box girder is precisely adjusted by the cooperation of a plurality of adjusting assemblies 400 respectively provided on the plurality of support members 100. That is, in the height direction of the support member 100, the position of the coarse adjustment sleeve 410 relative to the support member 100 can be adjusted first, and the positions of the adjusting sleeve and the lead screw 420 in the height direction of the support tube 120 are adjusted, so as to initially coarsely adjust the elevation or camber of the steel box girder. Further, the length of the lead screw 420 extending out of the sleeve 410 is finely adjusted by screwing the lead screw 420 relative to the sleeve 410, so as to precisely adjust the position of the lead screw 420 in the height direction of the support tube 120, and further finely adjust the elevation or camber of the steel box girder. Through the above-mentioned coarse adjustment process and fine adjustment process, the elevation or camber of the steel box girder can be precisely adjusted, thereby improving the control effect of the pre-assembled linear accuracy of the steel box girder.

[0042] Next, reference will be made to Figures 1 to 9 for a more detailed description of each part of the above-mentioned falsework device for pre-assembling a steel box girder in this exemplary embodiment.

[0043] In one embodiment, as shown in reference Figures 1 to 3 the support member 100 includes a base 110 and a support tube 120 vertically provided on the base 110. The axial direction of the support tube 120 is parallel to the third direction, that is, the support tube 120 extends along the third direction; the sleeve 410 is axially adjustably disposed through the support tube 120, and one end of the sleeve 410 close to the lead screw 420 is exposed outside the support tube 120. The above-mentioned cooperation of the base 110 and the support tube 120 forms the main stress components of the support member 100, and the gravity of the steel box girder received by the lead screw 420 can be transmitted to the support tube 120 through the sleeve 410, and then transmitted to the base 110; the above-mentioned cooperation of the sleeve 410 and the support tube 120, both of which are tubular in shape, the sleeve 410 can be partially embedded in the support tube 120, which is beneficial to ensuring the stability of the connection when the two are fixed and also beneficial to the stability of the relative sliding adjustment when coarsely adjusting.

[0044] Further, as shown in reference Figure 2 and Figure 3 a radially adjustable fixing member 121 is provided on the tube wall of the support tube 120, and a plurality of groups of first connection holes 4110 are provided on the sleeve 410. The plurality of groups of first connection holes 4110 are arranged at intervals along the circumferential direction of the sleeve 410, and a plurality of first connection holes 4110 in each group are arranged at intervals along the axial direction of the sleeve 410;

[0045] When at least a part of the sleeve 410 is received in the support tube 120, the fixing member 121 can extend into a corresponding first connection hole 4110 to fix the sleeve 410 to the support tube 120.

[0046] The above-mentioned method is to provide an adjustable fixing member 121 in the radial direction of the support tube 120 on the tube wall of the support tube 120, and arrange multiple groups of first connection holes 4110 on the sleeve 410. After rough adjustment, part of the fixing member 121 is inserted into a corresponding first connection hole 4110 on the sleeve 410 to fix the sleeve 410 to the support tube 120. During rough adjustment, only by pulling the fixing member 121 out of the corresponding first connection hole 4110 on the sleeve 410, the sleeve 410 can be adjusted along the height direction of the support tube 120. The operation is simple and the assembly operation time is saved.

[0047] Optionally, the fixing member 121 can be a pin shaft.

[0048] Optionally, referring to Figure 2 and Figure 3 As shown in, the first connection holes 4110 are arranged through the tube wall of the sleeve 410 in the radial direction of the sleeve 410. The second connection holes 1201 are provided through the tube wall of the support tube 120 for the fixing member 121 to pass through. When it is necessary to fix the sleeve 410 to the support tube 120, the second connection holes 1201 need to be aligned with a corresponding first connection hole 4110 on the sleeve 410 so that the fixing member 121 can pass through the second connection holes 1201 and the first connection holes 4110 at the same time to fix the sleeve 410 to the support tube 120.

[0049] Furthermore, referring to Figure 2 and Figure 3 As shown in, a plurality of stiffening plates 130 are provided on the outer wall of the support tube 120. The plurality of stiffening plates 130 are arranged at intervals along the circumferential direction of the support tube 120. Each stiffening plate 130 extends along the axial direction of the support tube 120, and one end of the stiffening plate 130 is connected to the base 110. By further providing a plurality of stiffening plates 130 connecting the base 110 on the support tube 120, the overall strength of the support member 100 is improved, which is beneficial to providing stable support for the steel box girder.

[0050] Optionally, referring to Figure 2 and Figure 3 As shown in, the stiffening plate 130 includes a first stiffening portion 131 and a second stiffening portion 132 connected axially along the support tube 120. The first stiffening portion 131 is connected to the support tube 120, and the second stiffening portion 132 connects the support tube 120 and the base 110;

[0051] Wherein, in the radial direction of the support tube 120, the width of the second stiffening portion 132 is greater than the width of the first stiffening portion 131.

[0052] By setting the structure and dimensions of the stiffening plate 130 as described above, it is beneficial to improve the connection strength between the support pipe 120 and the base 110, and avoid cracks or even fractures in the support member 100 due to excessive stress.

[0053] Optionally, fasteners are detachably provided on the stiffening plate 130, and the first connecting member 200 and the second connecting member 300 are respectively detachably connected to the fasteners on the corresponding stiffening plate 130. The above structural setting facilitates the installation and disassembly of the support mechanism, which is not only beneficial for assembly operations at the construction site but also conducive to adapting to steel box girders of different specifications.

[0054] Optionally, a first mounting hole 1301 is provided on the stiffening plate 130, and second mounting holes are respectively provided on the first connecting member 200 and the second connecting member 300. When it is necessary to connect the first connecting member 200 to the stiffening plate 130, the second mounting hole on the first connecting member 200 needs to be aligned with the first mounting hole 1301 on the stiffening plate 130, so that the fastener can pass through the second mounting hole and the first mounting hole 1301 simultaneously to achieve the connection between the first connecting member 200 and the stiffening plate 130. Similarly, the operating principle of connecting the second connecting member 300 to the stiffening plate 130 is the same as that of connecting the first connecting member 200 to the stiffening plate 130.

[0055] Optionally, the fastener can be a bolt, and the size of the fastener matches the diameters of the first mounting hole 1301 and the second mounting hole. Specifically, the diameters of the first mounting hole 1301 and the second mounting hole can be set to 18 mm, and this size setting can ensure the overall connection strength and stability of the support mechanism.

[0056] In one embodiment, as shown in Figure 1 、 Figure 2 and Figure 4 the sleeve 410 includes a pipe body 411 and an annular connecting portion 412 provided at one end of the pipe body 411. The inner cavity of the annular connecting portion 412 is communicated with the inner cavity of the pipe body 411, and a first connection hole 4110 is opened on the pipe body 411 of the sleeve 410; the lead screw 420 is threadedly connected to the annular connecting portion 412, and at least part of the lead screw 420 can extend into the pipe body 411. The above structural setting facilitates the flexible design of the size of the sleeve 410, that is, the size of the pipe body 411 of the sleeve 410 can be designed according to the support pipe 120, and the size of the annular connecting portion 412 of the sleeve 410 can be designed according to the lead screw 420, which can not only ensure the fit between the sleeve 410 and the support pipe 120 and the lead screw 420 but also help save materials.

[0057] Optionally, an internal thread 4121 is provided on the inner surface of the annular connecting portion 412, and an external thread 422 is provided on the outer surface of the lead screw 420 to achieve a threaded connection between the lead screw 420 and the annular connecting portion 412. The pitch of the internal thread 4121 on the annular connecting portion 412 matches the pitch of the external thread 422 on the lead screw 420. The specific data of the pitch can be set according to the precision of the fine adjustment, and at least the precision of the fine adjustment should reach the millimeter level.

[0058] Optionally, along the axial direction of the sleeve 410, the distance between two adjacent first connection holes 4110 on the tube body 411 of the sleeve 410 can be set to 200 mm - 300 mm.

[0059] Optionally, referring Figure 1 、 Figure 2 and Figure 4 as shown in, the outer diameter of the annular connecting portion 412 is greater than the outer diameter of the tube body 411;

[0060] When the sleeve 410 moves towards the base 110, the annular connecting portion 412 can abut against one end of the support tube 120 away from the base 110 to limit the sleeve 410 axially on the support tube 120, preventing the sleeve 410 from completely falling into the support tube 120 due to improper operation by the operator during rough adjustment and affecting the assembly efficiency.

[0061] Optionally, the inner diameter of the annular connecting portion 412 is smaller than the inner diameter of the tube body 411, which can not only ensure the fit between the sleeve 410 and the lead screw 420, but also help save the material usage of the tube body 411 of the sleeve 410.

[0062] Optionally, referring Figure 1 、 Figure 2 and Figure 5 as shown in, the lead screw 420 is provided with an auxiliary hole 421 penetrating along its radial direction for installing an operating rod. When screwing the lead screw 420, at least part of the operating rod can be inserted into the auxiliary hole 421, and the operator can hold the operating rod to screw the lead screw 420, which is labor-saving and time-saving.

[0063] Optionally, the first connecting member 200 and the second connecting member 300 can be angle steels, which are not only convenient for locally obtaining materials and processing on the construction site, but also help reduce costs.

[0064] To facilitate further understanding of the fixture device for pre-assembling steel box girders provided in this embodiment, the following also gives the specific use process of this fixture device:

[0065] First, assemble the support member 100, the sleeve 410, and the lead screw 420. Among them, the support member 100 and the sleeve 410 are fixed using the fixing member 121, and the lead screw 420 and the sleeve 410 are connected through threaded cooperation to form as Figure 2The structural member shown; then, a plurality of support members 100 assembled with sleeves 410 and lead screws 420 are arranged in a matrix array form at the construction site; finally, in the first direction, adjacent two support members 100 are connected by a first connecting member 200, and in the second direction, adjacent two support members 100 are connected by a second connecting member 300 to form a jigging device as shown in Figure 1 or Figure 6 the figure.

[0066] Next, the jigging device provided in this embodiment can be applied to the pre-assembly construction of the steel box girder. That is, according to the elevation setting of the steel box girder, the sleeves and the lead screws 420 are respectively adjusted in the height direction of the support member 100. For example, the position of the sleeve can be adjusted first, and then the position of the lead screw 420 can be adjusted to make the top elevation of the jigging device consistent with the bottom elevation of the steel box girder main body 500.

[0067] In addition, to facilitate understanding of how the jigging device provided in this embodiment is applied to the pre-assembly construction of the box-shaped steel, the following gives a description of the pre-assembly construction scenario of the box-shaped steel.

[0068] First, the ground lines need to be accurately drawn on the pre-assembly site according to the bridge construction drawings, including the contour line, the longitudinal and transverse baseline, the sectional and block lines, the jigging column lines, etc.; then, the jigging device provided in this embodiment is arranged according to the drawn ground lines. After the jigging device is arranged, according to the parameter requirements such as the steel box girder layout drawing, the longitudinal section design drawing, and the pre-camber design drawing, the elevation of the steel box girder is decomposed to the lead screws 420 at the top of each support member 100. By roughly adjusting the position of the sleeve 410 in the height direction of the support member 100 and finely adjusting the position of the lead screw 420 in the height direction of the support member 100, the top elevation of the jigging device is made consistent with the bottom elevation of the steel box girder main body 500; next, the top plate unit 510 of the steel box girder main body 500 is laid out on the jigging device by the inverted installation method, and the coincidence detection is carried out using a plumb bob and the ground line to ensure the spatial positioning accuracy of the top plate unit 510; the web unit 520, the diaphragm unit 530, and the bottom plate unit 540 are assembled in sequence, and the pre-assembly of the steel box girder main body 500 is completed. After the positions of each unit are detected to be qualified, the steel box girder main body 500 can be integrally welded.

[0069] It should be understood that the orientation or positional relationships indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. in the above description are based on the orientation or positional relationships shown in the drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the embodiments of the present invention.

[0070] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present invention, the meaning of "a plurality" is two or more, unless otherwise specifically and clearly defined.

[0071] In the embodiments of the present invention, unless otherwise clearly specified and limited, terms such as "installed", "connected", "connected to", "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0072] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher horizontal level than the second feature. The first feature being "below", "under" and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature is at a lower horizontal level than the second feature.

[0073] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc., mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0074] Other implementations of the present utility model will readily occur to those skilled in the art upon consideration of the specification and practice of the utility model disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present utility model, which follow the general principles of the present utility model and include known common knowledge or conventional technical means in the technical field not disclosed by the present utility model. The specification and examples are only to be considered as exemplary, and the true scope and spirit of the present utility model are pointed out by the appended claims.

Claims

1. A jig device for pre-assembling a steel box girder, characterized in that, include: A support mechanism, comprising a plurality of support members, a plurality of first connecting members and a plurality of second connecting members, wherein the plurality of support members are arranged in a rectangular array on a first plane, the first connecting members correspondingly connect two adjacent support members along a first direction, and the second connecting members correspondingly connect two adjacent support members along a second direction; A plurality of adjustment components are arranged corresponding to the plurality of support members one by one, each of the adjustment components comprises a sleeve and a lead screw threadedly connected to one end of the sleeve, the sleeve is adjustably arranged on the support member along a third direction, the lead screw is exposed from the support member and can move relative to the sleeve along the third direction under the action of a screwing force; The third direction is the height direction of the support member, the first direction, the second direction and the third direction are perpendicular to each other, and the first plane is perpendicular to the third direction.

2. The falsework device for pre-assembly of steel box girders according to claim 1, characterized in that, The support member includes a base and a support tube arranged on the base, the axial direction of the support tube is arranged parallel to the third direction, the sleeve is adjustable along the axial position of the support tube and is inserted into the support tube, and one end of the sleeve close to the screw is exposed from the support tube.

3. The falsework device for pre-assembly of steel box girders according to claim 2, wherein The tube wall of the support tube is provided with a fixing piece adjustable along its radial direction, and the sleeve is provided with a plurality of groups of first connection holes, the plurality of groups of first connection holes are arranged at intervals along the circumference of the sleeve, and the plurality of first connection holes in each group are arranged at intervals along the axial direction of the sleeve; When at least a portion of the sleeve is accommodated in the support tube, the fixing member can extend into a corresponding one of the first connecting holes to fix the sleeve to the support tube.

4. The falsework device for pre-assembly of steel box girders according to claim 2, characterized in that, A plurality of stiffening plates are arranged on the outer wall of the support tube, and the plurality of stiffening plates are arranged at intervals along the circumference of the support tube. Each of the stiffening plates extends along the axial direction of the support tube, and one end of the stiffening plate is connected to the base.

5. The falsework device for pre-assembly of steel box girders according to claim 4, characterized in that, The stiffening plate is detachably provided with a fastener, and the first connecting member and the second connecting member are detachably connected to the fastener on the corresponding stiffening plate, respectively.

6. The falsework device for pre-assembly of steel box girders according to claim 4, wherein, The stiffening plate comprises a first stiffening portion and a second stiffening portion connected along the axial direction of the support tube, the first stiffening portion is connected to the support tube, and the second stiffening portion is connected to the support tube and the base; Wherein, along the radial direction of the support tube, the width of the second stiffening portion is greater than the width of the first stiffening portion.

7. The falsework device for pre-assembly of steel box girders according to claim 2, characterized in that, The sleeve comprises a tube body and an annular connecting portion arranged at one end of the tube body, the lead screw is threadedly connected to the annular connecting portion, and at least a portion of the lead screw can extend into the tube body.

8. The falsework device for pre-assembly of steel box girders according to claim 7, characterized in that, The outer diameter of the annular connecting portion is greater than the outer diameter of the tube body; When the sleeve moves toward the base, the annular connecting portion can abut against an end of the support tube away from the base to limit the sleeve in the axial direction of the support tube.

9. The falsework device for pre-assembly of steel box girders according to claim 7 or 8, characterized in that, The inner diameter of the annular connecting portion is smaller than the inner diameter of the tube body.

10. The bench device for pre-assembling steel box girders according to claim 1, characterized in that, The lead screw is provided with an auxiliary hole along its radial direction for installing an operating rod.

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