A casting device for cast-in-place box girder of widened bridge

Abstract

The present invention discloses a casting device for widening a bridge cast-in-place box girder, the casting device comprises a lifting platform, a first clamping member is provided on the lifting platform, a second clamping member is provided on the lifting platform, a fixing member is provided on the lifting platform, a third clamping member is provided on the fixing member, a rotatable cutting member is provided on the fixing member, a material guide member is provided on the cutting member, a driving member is provided on the lifting platform, and a grouting member is provided on the lifting platform for sliding. The casting device of the present invention cuts off the steel bar group in the concave hole by gas cutting by inserting the material guide member deeply into the concave hole at the end of the box girder to cooperate with the rotating cutting member, and the cutting efficiency is high, which reduces the labor intensity of the staff. At the same time, the length of the steel bar after cutting is shorter than the hole depth, which is convenient for grouting and smoothing in the later stage. When cutting, the clamping member effectively clamps the steel bar to avoid scattered cutting, which is convenient for cleaning after cutting. The device is provided with a grouting member, which efficiently grouts and smoothes the cavity to ensure the stability of the box girder structure.

Description

Technical Field

[0001] The invention relates to a casting device, in particular to a casting device for cast-in-situ box beams of widened bridges. Background Art

[0002] The current bridge construction includes two parts: pier casting and box girder erection. The erection area between the box girder and the adjacent piers is set one by one. The box girder erection is the process of erecting a single box girder between the adjacent piers. When the box girder is cast, the temperature difference between the inside and the outside is too large due to the hydration heat reaction of the concrete or the sudden change of the external temperature, which will cause damage to the box girder, so vents are set. Some vents are set to exhaust the air in the formwork (or pipeline) during casting (or pipeline grouting), and they must be sealed in the end. However, there are steel bars in the vents, which need to be cut before grouting, and manual cutting is time-consuming and labor-intensive, and labor-intensive. Summary of the invention

[0003] The purpose of the present invention is to provide a casting device for cast-in-place box girders of widened bridges, move the lifting platform, align the trumpet tube with the concave hole at the end of the box girder, push and transfer, insert the concave hole steel bar into the trumpet hole and the guide tube, and insert the outer tube into the end hole of the box girder. The hydraulic cylinders on the first clamping member, the second clamping member and the third clamping member push the clamping plate to clamp the steel bar group, start the motor and the gas cutting machine, and the cutting member drives the cutting nozzle to rotate and cut the steel bar through the gear meshing transmission. The clamping plate opens and the cut steel bar is pulled out. The lifting frame and the grouting member are moved to align the telescopic tube with the concave hole of the box girder, and the grouting machine is started. Grout is injected into the concave hole. After completion, the telescopic cylinder pushes the scraper to move the grouting parts to smooth the concave hole after grouting. The casting device inserts the material guide into the concave hole at the end of the box beam and cooperates with the rotating cutting parts to cut off the steel bars in the concave hole through gas cutting. The cutting efficiency is high and the labor intensity of the staff is reduced. At the same time, the length of the steel bars after cutting is shorter than the hole depth, which is convenient for grouting and smoothing in the later stage. The clamping parts effectively clamp the steel bars during cutting to avoid messy cutting and facilitate cleaning after cutting. The device is equipped with grouting parts to efficiently grout and smooth the voids to ensure the stability of the box beam structure.

[0004] The purpose of the present invention can be achieved through the following technical solutions:

[0005] A casting device for widening a bridge cast-in-place box girder, the casting device includes a lifting platform, a first clamping member is provided on the lifting platform, a second clamping member is provided on the lifting platform, a fixing member is provided on the lifting platform, a third clamping member is provided on the fixing member, a rotatable cutting member is provided on the fixing member, a material guiding member is provided on the cutting member, a driving member is provided on the lifting platform, and a grouting member is provided on the lifting platform for sliding movement.

[0006] The cutting piece comprises a first gear, a sleeve is arranged on the first gear, a connecting pipe is arranged inside the sleeve, and a cutting nozzle is arranged below the connecting pipe.

[0007] Furthermore, the first clamping member comprises a hydraulic cylinder, and an output shaft of the hydraulic cylinder is fastened to a clamping plate.

[0008] Furthermore, the second clamping member has the same structure as the first clamping member, and the third clamping member has the same structure as the first clamping member, the difference being that the clamping direction of the third clamping member is opposite to that of the first clamping member, and the third clamping member is located between the first clamping member and the second clamping member.

[0009] Furthermore, the fixing member includes a fixing tube, a limiting groove is connected on the fixing tube, a matching groove is connected on the fixing tube, a guide tube is connected inside the fixing tube, the clamping plate on the first clamping member slides in cooperation with the limiting groove, the clamping plate on the second clamping member slides in cooperation with the limiting groove, and the clamping plate on the third clamping member slides in cooperation with the matching groove.

[0010] Furthermore, a limit block is provided on the connecting pipe, the connecting pipe is connected to the gas cutting machine, and the first gear is rotatably connected to the guide pipe.

[0011] Furthermore, the material guiding member comprises an outer tube, a trumpet tube is arranged inside the outer tube, a lap tube is arranged in the trumpet tube, and the limit block is rotatably connected to the outer tube.

[0012] Furthermore, the lap tube and the guide tube have the same inner diameter and are coaxial, and the cutting nozzle is located between the lap tube and the guide tube.

[0013] Furthermore, the driving member includes a motor, a rotating shaft is provided on the motor, one end of the rotating shaft is tightly connected to the motor output shaft, and the other end is tightly connected to the second gear, the rotating shaft is rotatably connected to the lifting platform, and the first gear is meshed with the second gear for transmission.

[0014] Furthermore, the grouting part includes a telescopic tube, which is slidably connected to the lifting platform, a telescopic cylinder is provided on the telescopic tube, an output shaft of the telescopic cylinder is fastened with a scraper, and the telescopic tube is connected to the grouting machine.

[0015] Beneficial effects of the present invention:

[0016] The pouring device of the present invention inserts the material guide member into the concave hole at the end of the box beam and cooperates with the rotating cutting member to cut off the steel bar group in the concave hole by gas cutting, which has high cutting efficiency and reduces the labor intensity of the staff. At the same time, the length of the steel bar after cutting is shorter than the hole depth, which is convenient for grouting and leveling in the later stage.

[0017] When cutting, the clamping parts of the casting device of the present invention effectively clamp the steel bars to avoid messy cutting and facilitate cleaning after cutting. The device is provided with a grouting part to efficiently grout and smooth the cavity to ensure the stability of the box beam structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] Figure 1 It is a schematic diagram of the structure of the pouring device of the present invention;

[0020] Figure 2 The present invention Figure 1 The enlarged structural diagram at A in the middle;

[0021] Figure 3 is a cross-sectional view of the pouring device of the present invention;

[0022] Figure 4 It is a partial structural schematic diagram of the pouring device of the present invention;

[0023] Figure 5 The present invention Figure 4 Enlarged structural diagram at B in the middle. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Example 1

[0026] A casting device for a cast-in-place box girder of a widened bridge, the casting device comprising a lifting platform 1, such as Figure 1 , Figure 2 As shown, a universal wheel is provided at the bottom of the lifting platform 1, a first clamping member 2 is provided on the lifting platform 1, a second clamping member 3 is provided on the lifting platform 1, a fixing member 4 is provided on the lifting platform 1, a third clamping member 5 is provided on the fixing member 4, a rotatable cutting member 6 is provided on the fixing member 4, a material guide member 7 is provided on the cutting member 6, the material guide member 7 is rotatably connected to the cutting member 6, and the material guide member 7 can also be fixedly connected to the cutting member 6, and a driving member 8 is provided on the lifting platform 1.

[0027] The first clamping member 2 includes a hydraulic cylinder 21, such as Figure 2 As shown, the output shaft of the hydraulic cylinder 21 is fastened with a clamping plate 22, the clamping plate 22 is arc-shaped, the hydraulic cylinder 21 is fastened to the lifting platform 1, the second clamping member 3 has the same structure as the first clamping member 2, and the third clamping member 5 has the same structure as the first clamping member 2. The difference is that the clamping direction of the third clamping member 5 is opposite to the clamping direction of the first clamping member 2, and the third clamping member 5 is located between the first clamping member 2 and the second clamping member 3.

[0028] The fixing member 4 includes a fixing tube 41, such as Figure 3As shown, a limiting groove 42 is connected to the fixed tube 41, a matching groove 43 is connected to the fixed tube 41, a guide tube 44 is connected inside the fixed tube 41, the clamping plate 22 on the first clamping member 2 is slidably matched with the limiting groove 42, the clamping plate 22 on the second clamping member 3 is slidably matched with the limiting groove 42, the clamping plate 22 on the third clamping member 5 is slidably matched with the matching groove 43, and the fixed tube 41 is firmly connected to the lifting platform 1.

[0029] The cutting member 6 comprises a first gear 61, such as Figure 4 , Figure 5 As shown, a sleeve 62 is provided on the first gear 61, a connecting pipe 63 is provided in the sleeve 62, a cutting nozzle 64 is provided below the connecting pipe 63, a limit block 65 is provided on the connecting pipe 63, the connecting pipe 63 is connected to the gas cutting machine, and the first gear 61 is rotatably connected to the guide pipe 44.

[0030] The material guide member 7 includes an outer tube 71, a trumpet tube 72 is provided inside the outer tube 71, a lap tube 73 is connected inside the trumpet tube 72, the lap tube 73 has the same inner diameter as the guide tube 44 and is coaxial, the cutting nozzle 64 is located between the lap tube 73 and the guide tube 44, the limit block 65 is rotatably connected to the outer tube 71, and the outer tube 71 and the sleeve 62 can be rotatably connected or tightly connected.

[0031] The driving member 8 includes a motor 81, such as Figure 4 As shown, a rotating shaft 82 is provided on the motor 81, one end of the rotating shaft 82 is tightly connected to the output shaft of the motor 81, and the other end is tightly connected to the second gear 83, the rotating shaft 82 is rotationally connected to the lifting platform 1, the first gear 61 is meshed with the second gear 83 for transmission, and the motor 81 is tightly connected to the lifting platform 1.

[0032] Example 2

[0033] Embodiment 2 further includes a grouting member 9 based on Embodiment 1.

[0034] The grouting member 9 includes a telescopic tube 91, such as Figure 1 As shown, the telescopic tube 91 is slidably connected to the lifting platform 1, a telescopic cylinder 92 is provided on the telescopic tube 91, a scraper 93 is fastened to the output shaft of the telescopic cylinder 92, and the telescopic tube 91 is connected to the grouting machine.

[0035] When in use, move the lifting platform 1, align the trumpet tube 72 with the concave hole at the end of the box beam, push and transfer, insert the concave hole steel bar into the trumpet hole 72 and the guide tube 44, and insert the outer tube into the end hole of the box beam. The hydraulic cylinders on the first clamping member 2, the second clamping member 3 and the third clamping member 5 push the clamping plate 22 to clamp the steel bar group, start the motor 81 and the gas cutting machine, and the cutting member 6 drives the cutting nozzle 64 to rotate and cut the steel bar through gear meshing transmission. The clamping plate 22 opens and the cut steel bar is pulled out. Move the lifting frame 1 and the grouting member 9, align the telescopic tube 91 with the concave hole of the box beam, start the grouting machine, and grout into the concave hole. After completion, the telescopic cylinder 92 pushes the scraper 93 to cooperate with the grouting member 9 to move and smooth the concave hole after grouting. The present invention inserts the material guide member into the concave hole at the end of the box beam and cooperates with the rotating cutting member to cut off the steel bar group in the concave hole by gas cutting. The cutting efficiency is high and the labor intensity of the staff is reduced. At the same time, the length of the steel bar after cutting is shorter than the hole depth, which is convenient for grouting and smoothing in the later stage. During cutting, the clamping member effectively clamps the steel bar to avoid messy cutting and facilitate cleaning after cutting. The device is provided with a grouting member to efficiently grout and smooth the cavity to ensure the stability of the box beam structure.

[0036] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does 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.

[0037] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A casting device for a cast-in-place box girder for a widened bridge, the casting device comprising a lifting platform (1), characterized in that: The lifting platform (1) is provided with a first clamping member (2), the lifting platform (1) is provided with a second clamping member (3), the lifting platform (1) is provided with a fixing member (4), the fixing member (4) is provided with a third clamping member (5), the fixing member (4) is rotatably provided with a cutting member (6), the cutting member (6) is provided with a material guide member (7), the lifting platform (1) is provided with a driving member (8), and the lifting platform (1) is slidably provided with a grouting member (9); The cutting member (6) comprises a first gear (61), a sleeve (62) is provided on the first gear (61), a connecting pipe (63) is provided inside the sleeve (62), and a cutting nozzle (64) is provided below the connecting pipe (63); The first clamping member (2) comprises a hydraulic cylinder (21), and an output shaft of the hydraulic cylinder (21) is fixedly connected to a clamping plate (22); The fixing member (4) comprises a fixing tube (41), a limiting groove (42) is connected to the fixing tube (41), a matching groove (43) is connected to the fixing tube (41), a guide tube (44) is connected inside the fixing tube (41), a clamping plate (22) on the first clamping member (2) is slidably matched with the limiting groove (42), a clamping plate (22) on the second clamping member (3) is slidably matched with the limiting groove (42), and a clamping plate (22) on the third clamping member (5) is slidably matched with the matching groove (43); The connecting pipe (63) is provided with a limit block (65), the connecting pipe (63) is connected to the gas cutting machine, and the first gear (61) is rotatably connected to the guide pipe (44); The material guide member (7) comprises an outer tube (71), a bell tube (72) is arranged inside the outer tube (71), a lap tube (73) is arranged in the bell tube (72), and a limit block (65) is rotatably connected to the outer tube (71); The overlapping tube (73) and the guide tube (44) have the same inner diameter and are coaxial, and the cutting nozzle (64) is located between the overlapping tube (73) and the guide tube (44); The driving member (8) comprises a motor (81), a rotating shaft (82) is provided on the motor (81), one end of the rotating shaft (82) is tightly connected to the output shaft of the motor (81), and the other end is tightly connected to the second gear (83), the rotating shaft (82) is rotatably connected to the lifting platform (1), and the first gear (61) and the second gear (83) are meshed for transmission.

2. According to the casting device for widening a bridge cast-in-place box girder as described in claim 1, the second clamping member (3) has the same structure as the first clamping member (2), and the third clamping member (5) has the same structure as the first clamping member (2), the difference between them is that the clamping direction of the third clamping member (5) is opposite to the clamping direction of the first clamping member (2), and the third clamping member (5) is located between the first clamping member (2) and the second clamping member (3).

3. The pouring device for widening a bridge cast-in-place box girder according to claim 1, characterized in that: The grouting member (9) comprises a telescopic tube (91), the telescopic tube (91) is slidably connected to the lifting platform (1), a telescopic cylinder (92) is provided on the telescopic tube (91), a scraper (93) is fastened to the output shaft of the telescopic cylinder (92), and the telescopic tube (91) is connected to a grouting machine.

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