A hanging basket inner cavity formwork system suitable for variable cross-section bridges

Abstract

A hanging basket inner cavity formwork system suitable for variable cross-section bridges includes: a top formwork located at the top, two side formworks No. 1, two side formworks No. 2, and two side formworks No. 3 located on both sides from top to bottom; the top formwork, side formwork No. 1, side formwork No. 2, and side formwork No. 3, the top formwork and each side formwork are connected by a rotating connection mechanism. A set of jack demoulding devices is provided in each formwork. The present invention adopts a combined formwork, and when encountering a variable cross-section, only a part of the formwork needs to be replaced, and there is no need to replace the entire formwork. A set of jack demoulding devices is provided in the formwork system, and it is only necessary to use the jack to demould in the order from bottom to top, which is very convenient. In addition, the use of jack demoulding can improve the apparent quality of concrete. Less labor is required, the construction speed is fast, the concrete surface quality is good, and the construction is safe.

Description

[Technical field]

[0001] The invention belongs to the technical field of bridge engineering, and in particular relates to a hanging basket inner cavity formwork system suitable for variable-section bridges. [Background technology]

[0002] At present, for the inner formwork of the hanging basket of variable-section bridges, wooden formwork or steel formwork is basically used on the construction site.

[0003] The construction time using wooden formwork is longer, more installers are needed, and a full-height bracket must be set up in the inner cavity of the hanging basket, which is very dangerous. When removing the formwork, the materials of the wooden formwork are relatively scattered, and the hanging basket is an aerial operation, which can easily cause the danger of falling objects from a high altitude.

[0004] When using steel formwork for construction, the steel formwork used is basically integral. When encountering a variable-section bridge, the inner formwork of the hanging basket needs to be replaced as a whole, which easily causes waste of materials. In addition, the overall replacement requires more time and labor for installation, the construction risk is relatively large, and it is more difficult to dismantle the steel formwork. [Summary of the invention]

[0005] The technical problem to be solved by the present invention is to provide a hanging basket inner cavity formwork system for a variable cross-section bridge with low cost and good construction quality.

[0006] The present invention is achieved in that:

[0007] A hanging basket inner cavity formwork system suitable for variable cross-section bridges, comprising: a top formwork located at the top, two No. 1 side formworks, two No. 2 side formworks, and two No. 3 side formworks located on both sides from top to bottom;

[0008] The top formwork, the first side formwork, the second side formwork and the third side formwork all include: a steel plate, a plurality of steel trusses, and a plurality of connecting rods; the plurality of steel trusses are welded to the steel plate in parallel and at even intervals; the plurality of connecting rods are welded to the plurality of steel trusses perpendicularly and in parallel and at even intervals;

[0009] The top template also has a plurality of template support rods perpendicular to the steel plate, and the bottom of the template support rods is mounted on a walking mechanism; the walking mechanism is arranged on the track beam;

[0010] Both sides of the top template are rotatably connected to the top of one of the side templates No. 1 through a plurality of rotatable connection mechanisms;

[0011] The bottom of each of the No. 1 side templates is rotatably connected to the top of one of the No. 2 side templates via a plurality of rotatable connection mechanisms;

[0012] The bottom of each of the second side plates is rotatably connected to the top of one of the third side templates via a plurality of rotatable connection mechanisms;

[0013] The longitudinal section of the No. 3 side formwork is a variable section, so that it matches the variable section bridge.

[0014] Furthermore, the rotary connection mechanism comprises: a first connection member, a second connection member, and a cylindrical latch;

[0015] One end of each of the first connecting member and the second connecting member is provided with a plurality of circular orifice plates designed to be spaced apart, and the plurality of circular orifice plates at the end of the first connecting member are inserted into the gaps between the plurality of circular orifice plates at the end of the second connecting member to form a cylindrical cavity;

[0016] The cylindrical plug is inserted into the cylindrical cavity so that the first connecting member and the second connecting member are rotatably connected;

[0017] The other ends of the first connecting member and the second connecting member are welded to the ends of the steel trusses of the two templates to be connected.

[0018] Furthermore, it also includes: an integral template lifting device,

[0019] The integral template jacking device comprises: four template jacking devices;

[0020] Each of the template lifting devices includes: a track beam bonding block, a lifting jack, and a slot; the top of the lifting jack is connected to the slot, and the bottom of the lifting jack is connected to the track beam bonding block; the slot is clamped with the steel truss of the top template; the track beam bonding block is clamped with the track beam.

[0021] Furthermore, the top template, the first side template, the second side template, and the third side template are all provided with a jack demoulding device;

[0022] The jack release device comprises: two reaction cross bars, two force transmission cross bars, and a demoulding jack; one end of the demoulding jack is connected to the two reaction cross bars, and the other end is connected to the two force transmission cross bars; the two reaction cross bars are welded to the steel trusses of the top template or the side template, and the two force transmission cross bars are welded to multiple template connecting parts, and the other ends of the multiple template connecting parts are all welded with circular steel plates, and the circular steel plates pass through the holes on the steel plates of the top template or the side template.

[0023] Furthermore, the walking mechanism comprises: two steel wheels, a bearing, and a socket pipe;

[0024] The two steel wheels are connected by the bearing, the socket pipe is welded to the top of the bearing, and the two steel wheels are matched with the track beam; two latch holes are arranged on the socket pipe, and the two latch holes are used to fix the socket pipe and the template support rod of the top template;

[0025] Furthermore, a third pin hole is provided at a portion of the template support rod located above the socket pipe, and a pin is inserted into the third pin hole during demoulding to prevent excessive impact force during demoulding.

[0026] Furthermore, each of the two No. 1 side plate molds is provided with a first rod groove, and a first side mold support rod is mounted on the two first rod grooves;

[0027] The two second side plate molds are each provided with a second rod groove, and a second side mold support rod is mounted on the two second rod grooves;

[0028] The second and third side plate molds are each provided with a third rod groove, and a third side mold support rod is mounted on the two third rod grooves.

[0029] The advantages of the present invention are: 1. The present invention adopts a combined formwork. When encountering a variable cross-section, only a part of the formwork needs to be replaced, and there is no need to replace the entire formwork. 2. A set of jack demoulding devices is provided in the formwork system. It is only necessary to use the jack to demould in the order from bottom to top, which is very convenient. In addition, the use of jack demolding can improve the apparent quality of concrete. 3. A set of walking system is provided in the formwork system. It only needs to be pushed forward manually, which is convenient and fast. 4. When installing the formwork system, since the formwork is lowered as a whole when the formwork is removed, it is only necessary to place two jacks on the walking rails and lift it to a suitable position. 5. In order to increase the overall rigidity of the formwork, side formwork support rods are provided. 6. Less labor is required, the construction speed is fast, the concrete surface quality is good, and the construction is safe.

Brief Description of the Drawings

[0030] The present invention will be further described below in conjunction with embodiments with reference to the accompanying drawings.

[0031] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0032] Figure 2 It is the front view of the top template (with a jack demoulding device installed) in the present invention.

[0033] Figure 3 It is a bottom view of the top template (with a jack demoulding device installed) in the present invention.

[0034] Figure 4 It is the front view of the No. 1 side formwork (or No. 2 side formwork) in the present invention.

[0035] Figure 5 It is a left view of the No. 1 side formwork (or No. 2 side formwork) in the present invention.

[0036] Figure 6 It is the front view of side formwork No. 3 in the present invention.

[0037] Figure 7 It is the left view of No. 3 side formwork in the present invention.

[0038] Figure 8 It is a front view of the exploded structure of the rotary connection mechanism in the present invention.

[0039] Fig. 9 It is a front view of the rotary connection mechanism of the present invention after assembly.

[0040] Fig.10 It is a top view of the exploded structure of the rotary connection mechanism in the present invention.

[0041] Fig.11 It is a top view of the assembled rotary connection mechanism in the present invention.

[0042] Fig.12 It is a structural schematic diagram of the jack demoulding device in the present invention.

[0043] Fig.13 It is a structural schematic diagram of the template lifting device in the present invention.

[0044] Fig.14 It is a structural schematic diagram of the walking mechanism in the present invention. [Specific implementation method]

[0045] See also Figures 1 to 14 As shown, a hanging basket inner cavity formwork system suitable for variable-section bridges includes: a top formwork 400 located at the top, two No. 1 side formworks 100, two No. 2 side formworks 200, and two No. 3 side formworks 300 located on both sides from top to bottom.

[0046] The top formwork 400, the first side formwork 100, the second side formwork 200 and the third side formwork 300 all include: a steel plate 1, a plurality of steel trusses 2, and a plurality of connecting rods 21; the plurality of steel trusses 2 are welded to the steel plate 1 at even intervals and in parallel; the plurality of connecting rods 21 are welded to the plurality of steel trusses 2 perpendicularly and at even intervals and in parallel.

[0047] The top template 400 also has a plurality of template support rods 3 perpendicular to the steel plate 1 , and the bottom of the template support rods 3 is mounted on a walking mechanism 40 ; the walking mechanism 40 is arranged on the track beam 500 .

[0048] like Fig.14As shown, the walking mechanism 40 includes: two steel wheels 41, a bearing 42, and a socket pipe 43; the two steel wheels 41 are assembled and connected through the bearing 42, the socket pipe 43 is welded to the top of the bearing 42, and the two steel wheels 41 are matched with the track beam 500; two latch holes 431 are set on the socket pipe 43, and the two latch holes 431 are used to fix the template support rod 3 that connects the socket pipe 43 and the top template 400. The template support rod 3 is also provided with a third latch hole 31 at the position above the socket pipe 43, and a latch is inserted into the third latch hole 31 during demoulding to prevent excessive impact during demoulding.

[0049] Both sides of the top template 400 are rotatably connected to the top of one of the side templates 100 via a plurality of rotatable connection mechanisms 70;

[0050] The bottom of each No. 1 side template 100 is rotatably connected to the top of one of the No. 2 side templates 200 via a plurality of rotatable connection mechanisms 70;

[0051] The bottom of each No. 2 side plate 200 is rotatably connected to the top of one of the No. 3 side templates 300 via a plurality of rotatable connection mechanisms 70;

[0052] The longitudinal section of the third side formwork 300 is a variable section, so that it matches the variable section bridge.

[0053] like Figures 8 to 11 As shown, the rotary connection mechanism 70 includes: a first connection member 71, a second connection member 72, and a cylindrical pin 73; one end of the first connection member 71 and the second connection member 72 are provided with a plurality of circular hole plates 711 and 721 designed to be spaced apart, and the plurality of circular hole plates 711 at the end of the first connection member 71 are inserted into the gaps between the plurality of circular hole plates 721 at the end of the second connection member 72 to form a cylindrical cavity; the cylindrical pin 73 is inserted into the cylindrical cavity, so that the first connection member 71 and the second connection member 72 are rotationally connected; the other ends of the first connection member 71 and the second connection member 72 are welded to the ends of the steel trusses 1 of the two templates to be connected.

[0054] Also includes: overall template lifting device,

[0055] The integral template lifting device comprises: four template lifting devices 80;

[0056] Each of the template lifting devices 80, such as Fig.13 As shown, it includes: a track beam bonding block 81, a lifting jack 82, and a slot 83; the top of the lifting jack 82 is connected to the slot 83, and the bottom of the lifting jack 82 is connected to the track beam bonding block 81; the slot 83 is connected to the steel truss of the top template 400; the track beam bonding block 81 is connected to the track beam 500.

[0057] The top mold plate 400 , the first side mold plate 100 , the second side mold plate 200 , and the third side mold plate 300 are all provided with a jack demoulding device 60 .

[0058] Jack demoulding device 60, such as Fig.12 As shown, it includes: two reaction cross bars 61, two force transmission cross bars 62, and a demoulding jack 63; one end of the demoulding jack 63 is connected to the two reaction cross bars 61, and the other end is connected to the two force transmission cross bars 62; the two reaction cross bars 61 are welded to the steel truss 1 of the top template or the side template, and the two force transmission cross bars 62 are welded to multiple template connecting parts 64, and the other ends of the multiple template connecting parts 64 are all welded with circular steel plates 65, and the circular steel plates 65 pass through the holes on the steel plate 1 of the top template or the side template.

[0059] A first rod groove 91 is provided on each of the two No. 1 side plate molds 100, and a first side mold symmetrical rod 911 is mounted on the two first rod grooves 91;

[0060] The two second side plate molds 200 are each provided with a second rod groove 92, and a second side mold symmetrical rod 921 is mounted on the two second rod grooves 92;

[0061] A third rod groove 93 is provided on each of the second and third side plate molds 300 , and a third side mold symmetrical rod 931 is mounted on the two third rod grooves 93 .

[0062] Workflow: First, fix one end of the track beam 500 on the 0# block, and fix the other end on the hanging basket through a rod, then assemble the top template 400 and the No. 1 side template 100 on the ground through the rotating connection mechanism 70, and then splice the No. 1 side template 100 with the No. 2 side template 200, and then splice it with the No. 3 side template 300. Then install the walking mechanism 40 on the top template 400, install the template system in place by a crane or tower crane, and then install the side template support rods 91, 92, 93, and fix them to the side outer template of the hanging basket through tension bolts. When removing the mold, first remove the side mold support rods 91, 92, 93, then remove the tension bolts, open the jack of the No. 3 side template 300, after the No. 3 side template 300 is demolded, open the jack of the No. 2 side template 200, after the No. 2 side template 200 is demolded, open the jack of the No. 1 side template 100, after the No. 1 side template 100 is demolded, before opening the jack of the top template 400, insert the pin in the top pin hole 31 of the template support rod 3 of the top template 400, and at the same time remove the pins of the two pin holes 431 at the bottom of the template support rod, and open the top template After the demoulding, the pin of the pin hole 31 will stay on the top of the socket pipe 43. Return the jack on the template to its original position. After the hanging basket is extended forward and the reinforcement of the bottom and the side wall is tied, and the track beam 500 is laid forward, replace the No. 3 side template 300. After the splicing is completed, move the template system forward, push it into place, use the overall template lifting system to push the template to the designed elevation, insert the pins in the two pin holes 431 of the socket pipe 43, and then install the side template support rods 91, 92, 93, and fix them to the hanging basket side outer template by tension bolts.

[0063] The present invention adopts a combined formwork. When encountering a variable cross-section, only a part of the formwork needs to be replaced without replacing the entire formwork. A set of jack demoulding devices is provided in the formwork system. It only needs to be demoulded by using a jack in a bottom-up order, which is very convenient. In addition, the use of jack demoulding can improve the apparent quality of concrete. A set of walking mechanisms is provided in the formwork system. It only needs to be pushed forward manually, which is convenient and fast. When installing the formwork system, since the formwork is lowered as a whole when the formwork is removed, it is only necessary to place two jacks on the walking rails and lift it to a suitable position. In order to increase the overall rigidity of the formwork, side formwork support rods are provided. Less labor is required, the construction speed is fast, the concrete surface quality is good, and the construction is safe.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A hanging basket inner cavity formwork system suitable for variable cross-section bridges, characterized by: include: A top template at the top, two side templates No. 1, two side templates No. 2, and two side templates No. 3 located on both sides from top to bottom; The top formwork, the first side formwork, the second side formwork and the third side formwork all include: a steel plate, a plurality of steel trusses, and a plurality of connecting rods; the plurality of steel trusses are welded to the steel plate in parallel and at even intervals; the plurality of connecting rods are welded to the plurality of steel trusses perpendicularly and in parallel and at even intervals; The top template also has a plurality of template support rods perpendicular to the steel plate, and the bottom of the template support rods is mounted on a walking mechanism; the walking mechanism is arranged on the track beam; Both sides of the top template are rotatably connected to the top of one of the side templates No. 1 through a plurality of rotatable connection mechanisms; The bottom of each of the No. 1 side templates is rotatably connected to the top of one of the No. 2 side templates via a plurality of rotatable connection mechanisms; The bottom of each of the second side plates is rotatably connected to the top of one of the third side templates via a plurality of rotatable connection mechanisms; The longitudinal section of the No. 3 side formwork is a variable section, so that it matches the variable section bridge.

2. A hanging basket inner cavity formwork system suitable for variable cross-section bridges as claimed in claim 1, characterized in that: The rotary connection mechanism comprises: a first connection member, a second connection member, and a cylindrical latch; One end of each of the first connecting member and the second connecting member is provided with a plurality of circular orifice plates designed to be spaced apart, and the plurality of circular orifice plates at the end of the first connecting member are inserted into the gaps between the plurality of circular orifice plates at the end of the second connecting member to form a cylindrical cavity; The cylindrical plug is inserted into the cylindrical cavity so that the first connecting member and the second connecting member are rotatably connected; The other ends of the first connecting member and the second connecting member are welded to the ends of the steel trusses of the two templates to be connected.

3. The inner cavity formwork system of a hanging basket suitable for a variable cross-section bridge as claimed in claim 1, characterized in that: Also includes: Integral formwork lifting device, The integral template jacking device comprises: four template jacking devices; Each of the template lifting devices includes: a track beam bonding block, a lifting jack, and a slot; the top of the lifting jack is connected to the slot, and the bottom of the lifting jack is connected to the track beam bonding block; the slot is clamped with the steel truss of the top template; the track beam bonding block is clamped with the track beam.

4. The inner cavity formwork system of a hanging basket suitable for a variable cross-section bridge as claimed in claim 3, characterized in that: The top template, the first side template, the second side template, and the third side template are all provided with a jack demoulding device; The jack release device comprises: two reaction cross bars, two force transmission cross bars, and a demoulding jack; one end of the demoulding jack is connected to the two reaction cross bars, and the other end is connected to the two force transmission cross bars; the two reaction cross bars are welded to the steel trusses of the top template or the side template, and the two force transmission cross bars are welded to multiple template connecting parts, and the other ends of the multiple template connecting parts are all welded with circular steel plates, and the circular steel plates pass through the holes on the steel plates of the top template or the side template.

5. A hanging basket inner cavity formwork system suitable for variable cross-section bridges as claimed in claim 4, characterized in that: The walking mechanism comprises: two steel wheels, a bearing, and a socket pipe; The two steel wheels are assembled and connected via the bearing, the socket pipe is welded to the top of the bearing, and the two steel wheels cooperate with the track beam; two pin holes are arranged on the socket pipe, and the two pin holes are used to fix the socket pipe and the template support rod of the top template.

6. A hanging basket inner cavity formwork system suitable for variable cross-section bridges as claimed in claim 5, characterized in that: The template support rod is also provided with a third pin hole at a position above the socket pipe. A pin is inserted into the third pin hole during demoulding to prevent excessive impact force during demoulding.

7. The inner cavity formwork system of a hanging basket suitable for a variable cross-section bridge as claimed in claim 1, characterized in that: The two No. 1 side plate molds are each provided with a first rod groove, and a first side mold support rod is mounted on the two first rod grooves; The two second side plate molds are each provided with a second rod groove, and a second side mold support rod is mounted on the two second rod grooves; The second and third side plate molds are each provided with a third rod groove, and a third side mold support rod is mounted on the two third rod grooves.

Images