A construction platform for prestressed grouting of large cantilever beams

Abstract

This invention discloses a construction platform for prestressed grouting of large cantilever beams, belonging to the field of construction equipment. It includes a base frame and a triangular frame. A lifting frame is slidably installed on the inner side of the base frame, and a locking guide rail assembly is provided above the lifting frame. Two sets of beam-holding supports are provided at the top of the locking guide rail assembly, and a platform plate is provided at the top of the beam-holding supports. A grouting auxiliary component is provided at the center of the platform plate. When using this device, installing the triangular frame would make the entire device's chassis too large and inconvenient to move. The triangular frame is installed when the platform's center of gravity is relatively high and removed when the platform's center of gravity is relatively low. The triangular frame can be assembled or disassembled according to the actual construction situation. The base frame and triangular frame are brought together, angle steel is inserted into the corners of the base frame and triangular frame, the triangular frame is removed, and then the base frame and the entire device can be moved to a different position.

Description

Technical Field

[0001] This invention relates to the field of casting equipment, and in particular to a construction platform for prestressed grouting of large cantilever beams. Background Technology

[0002] With the development of industrial technology, the modern construction industry has become more and more sophisticated. During the construction of huge beams, grouting operations are required. The beams are quite high, so grouting construction platforms are needed to assist in the operation.

[0003] As disclosed in patent number 202220212686.0, this device includes a load-bearing channel steel and a connecting channel steel. Two main trusses are connected by the connecting channel steel, and four connecting channel steels are provided. Four adjusting connecting plates are welded to the inner side of the load-bearing channel steel at the cantilever end of the main truss, of which two are provided on the load-bearing channel steel. The load-bearing channel steel is used to adjust the connecting plates to fix the working platform to the cantilever end of the main truss with bolts.

[0004] The device has the following drawbacks during use: First, its position is fixed, and the cantilever beam is quite large. After one section of the cantilever beam is processed, the operating platform needs to be moved, the device disassembled, and then moved to a new position for reinstallation. There are many bolts involved in the disassembly and reassembly process, which is very time-consuming and labor-intensive. Second, the operating platform of the device is prone to swaying relative to the cantilever beam. If the positional deviation between the platform and the cantilever beam exceeds a certain range, it can easily cause malfunctions in the grouting operation. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a construction platform for prestressed grouting of large cantilever beams. When using this device, installing a tripod would make the entire chassis too large and hinder movement. The tripod is installed when the platform's center of gravity is high and removed when it's low. The tripod can be assembled or disassembled according to the actual construction situation. The base frame and the tripod are brought together, angle steel is inserted at the corners of the base frame and the tripod, and then pins are inserted. This operation eliminates the need for bolt removal and saves time. After grouting a section of the cantilever beam is completed, the tripod is removed, and then the base frame and the entire device can be moved to different positions, achieving convenient workstation changes.

[0006] To solve the above problems, the present invention provides the following technical solution: a construction platform for prestressed grouting of large cantilever beams, comprising a base frame and a triangular frame, wherein the base frame and the triangular frame are connected by a buckling assembly, and grounding wheels are provided between the base frame and the triangular frame. A lifting frame is slidably installed on the inner side of the base frame, and a locking guide rail assembly is provided above the lifting frame. Two sets of beam-holding supports are provided at the top of the locking guide rail assembly, and a platform plate is provided at the top of the beam-holding supports. A grouting auxiliary assembly is provided at the center of the platform plate. The buckling assembly includes angle steel, which wraps around the supports of the base frame and the triangular frame, and pins are inserted through the angle steel, with the pins fitting against the supports of the base frame and the triangular frame.

[0007] Furthermore, the lifting frame is made of four angle steels welded together, with two built-in frames welded to the inside of the lifting frame, and a mounting frame fixedly installed at the top of the lifting frame. The bottom of the lifting frame is inserted into the inside of the base frame, and two electric push rods are provided at the top of the base frame. The output end of the electric push rods is connected to the bottom surface of the mounting frame.

[0008] Furthermore, the locking guide rail assembly includes two bottom guide rails, which are fixed to the top of the mounting frame. Two sets of enclosing sliders are slidably installed on the bottom guide rails. A platform is fixedly installed on the top of each set of enclosing sliders. Two sets of beam supports are fixed on the top surface of the platform. A traction assembly is provided between the platforms. A bolt is detachably installed on the bottom guide rail to block the enclosing slider.

[0009] Furthermore, the tensioning assembly includes tension flanges, which are respectively fixed to the bottom surface of the platform and connected to each other by tension springs.

[0010] Furthermore, the beam support includes a closure bridge, which is fixed to the top surface of the platform by bolts, and buffer wheels that fit against the crossbeam are provided on the side wall of the closure bridge.

[0011] Furthermore, the buffer wheel includes a buffer roller, which is rotatably connected to the side wall of the closing bridge via an elastic bracket. A rubber ring is provided on the outer side of the buffer roller, and the cross-section of the rubber ring is semi-circular.

[0012] Furthermore, a top guide rail is fixedly installed at the bottom of the platform plate, and a disassembly slider and a reset slider are installed on the top guide rail. The disassembly slider is slidably connected to the top guide rail, the reset slider is fixedly connected to the top guide rail, the disassembly slider is fixedly connected to the left closing bridge, and the reset slider is fixedly connected to the right closing bridge.

[0013] Furthermore, guardrail holes are provided on both the left and right sides of the platform, and guardrails can be detachably installed in the guardrail holes.

[0014] Furthermore, the slurry auxiliary component includes a positioning port at the center of the platform plate, a feeding ring is fixedly installed in the positioning port, a feeding cylinder is slidably installed on the inner side of the feeding ring, a sliding auxiliary mechanism is provided between the feeding ring and the feeding cylinder, and a flared mouth is provided at the top of the feeding cylinder. The feeding cylinder and the flared mouth are made of high-speed steel.

[0015] Furthermore, the sliding auxiliary mechanism includes a groove on the outside of the feed cylinder, the groove has a semi-circular cross-section, a spherical shell is provided on the inside of the feed ring, and a steel ball is installed to rotate the particles, with the steel ball attached to the inside of the groove.

[0016] The beneficial effects of this invention are:

[0017] Firstly, when using this device, installing the tripod would make the entire chassis too large and inconvenient to move. The tripod is installed when the platform's center of gravity is relatively high and removed when the platform's center of gravity is relatively low. The tripod can be assembled or disassembled according to the actual construction situation. The base frame and the tripod are brought together, the angle steel is inserted into the corner of the base frame and the tripod, and then the pin is inserted. This operation does not require the removal of bolts and saves more time. After the grouting of one stage of the cantilever beam is completed, the tripod is removed, and then the base frame and the entire device can be moved to a different position, achieving the effect of conveniently changing work positions.

[0018] Secondly, the device is pushed under the cantilever beam, and the electric push rod drives the lifting frame and the mounting frame to the designated height. The loading platform and the closing bridge are then installed on the bottom guide rail. After installation, the bolts are inserted into the bottom guide rail to limit the position of the closing slider. The loading platform and the closing bridge press against the middle support through the tension spring. The buffer rollers on the inner wall of the closing bridge lock the left and right side walls of the cantilever beam. Compared with the operating platform of the existing technology, the operating platform of this device will not deviate too much from the cantilever beam, which can make the platform plate and the grouting device at the top have a stable position.

[0019] Third, move the input port of the concrete truck above the horn opening, insert the discharge cylinder into the grouting hole, and slowly lift the discharge cylinder upward while grouting. The discharge cylinder is made of high-speed steel and equipped with a vibration device. High-speed steel has a better vibration effect, while the cantilever beam cannot be vibrated. This will prevent the concrete slurry from sticking to the wall and improve the pouring effect. Attached Figure Description

[0020] Figure 1 This is a frontal view of the present invention.

[0021] Figure 2 This is a schematic diagram of the invention from the side.

[0022] Figure 3 This is a schematic diagram of the angle steel of the present invention.

[0023] Figure 4 This is a schematic diagram of the top guide rail of the present invention.

[0024] Figure 5 This is a schematic diagram of the feed cylinder of the present invention.

[0025] Figure 6 This is a schematic diagram of the tension spring of the present invention.

[0026] Figure 7 This is a schematic diagram of disassembling the slider according to the present invention.

[0027] Figure 8 This is a schematic diagram of the buffer roller of the present invention.

[0028] Explanation of reference numerals in the attached figures:

[0029] Base frame 1, electric push rod 101, triangular frame 2, angle steel 3, pin 301, ground wheel 4, lifting frame 5, internal frame 501, mounting frame 6, closing bridge 7, bottom guide rail 701, tension flange 702, closing slider 703, loading platform 704, bolt column 705, top guide rail 706, disassembly slider 707, reset slider 708, tension spring 709, platform plate 8, guardrail hole 801, buffer roller 9, elastic bracket 901, rubber ring 902, material discharge ring 10, steel ball 1001, material discharge cylinder 1002, flared mouth 1003, wire trough 1004. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0031] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0032] Reference Figure 1 , 2The illustrated platform for prestressed grouting construction of a large cantilever beam includes a base frame 1 and a triangular frame 2, which are connected by a fastening assembly. Grounding wheels 4 are provided between the base frame 1 and the triangular frame 2. A lifting frame 5 is slidably mounted on the inner side of the base frame 1, and a locking guide rail assembly is provided above the lifting frame 5. Two sets of beam-holding supports are provided at the top of the locking guide rail assembly, and a platform plate 8 is provided at the top of the beam-holding supports. A grouting auxiliary assembly is provided at the center of the platform plate 8. The fastening assembly includes angle steel 3, which encloses the supports of the base frame 1 and the triangular frame 2, and pins 301 are inserted through the angle steel 3, fitting against the base frame 1 and the triangular frame 2. When using the device, installing the triangular frame 2 on the support column would make the entire device's chassis too large and inconvenient to move. When the platform's center of gravity is relatively high, install the triangular frame 2; when the platform's center of gravity is relatively low, remove the triangular frame 2. Assemble or disassemble the triangular frame 2 according to the actual construction situation. Bring the base frame 1 and the triangular frame 2 together, insert the angle steel 3 into the corner of the base frame 1 and the triangular frame 2, and then insert the pin 301. This operation does not require the removal of bolts and saves more time. After the grouting of one section of the cantilever beam is completed, remove the triangular frame 2, and then you can push the base frame 1 and the entire device to move to a different position, achieving the effect of conveniently changing work positions.

[0033] like Figure 1 , 3 As shown, the lifting frame 5 is made of four angle steels welded together. Two built-in frames 501 are welded to the inner side of the lifting frame 5, and a mounting frame 6 is fixedly installed at the top of the lifting frame 5. The bottom end of the lifting frame 5 is inserted into the inner side of the base frame 1. Two electric push rods 101 are provided at the top of the base frame 1. The output end of the electric push rod 101 is connected to the bottom surface of the mounting frame 6, pushing the device to the bottom of the cantilever beam. The electric push rod 101 drives the lifting frame 5 and the mounting frame 6 to lift to the specified height. The platform at the top of the mounting frame 6 can reach the operating position of the cantilever beam.

[0034] like Figure 4 As shown, the locking guide rail assembly includes two bottom guide rails 701, which are fixed to the top of the mounting frame 6. Two sets of enclosing sliders 703 are slidably installed on the bottom guide rails 701. A platform 704 is fixedly installed on the top of each of the two sets of enclosing sliders 703. Two sets of beam supports are fixed on the top surface of the platform 704. A tensioning assembly is provided between the platforms 704. A bolt 705 that blocks the enclosing sliders 703 is detachably installed on the bottom guide rails 701. The two sets of beam supports at the top of the platform 704 slide along the bottom guide rails 701. The two sets of beam supports can hold the cantilever beam. The device uses the ground and the cantilever beam as support points to achieve a relatively stable state. The device will not have too large an amplitude relative to the cantilever beam.

[0035] like Figure 6 As shown, the pulling assembly includes a tension flange 702, which is fixed to the bottom surface of the platform 704. The tension flanges 702 are connected by a tension spring 709. The platform 704 retracts inward to the device through the tension spring 709. There is an elastic clamping force between the beam support and the crossbeam to prevent rigid collision between the device and the crossbeam, which would cause the device to be damaged.

[0036] like Figure 4 , 6 As shown, the beam support includes a closing bridge 7, which is fixed to the top surface of the platform 704 by bolts. The side wall of the closing bridge 7 is provided with buffer wheels that fit against the crossbeam. The buffer wheels apply pressure to the two side arms of the constant beam through tension springs 709. When the base frame 1 is in a certain position relative to the crossbeam, the buffer wheels roll on the crossbeam, so there is no need to disassemble the beam support. Compared with the existing operating platform, which requires equipment adjustment every time the position is moved, this device can move the support without adjustment.

[0037] like Figure 8 As shown, the buffer wheel includes a buffer roller 9, which is rotatably connected to the side wall of the closing bridge 7 via an elastic bracket 901. A rubber ring 902 is provided on the outer side of the buffer roller 9. The cross-section of the rubber ring 902 is semi-circular. The rubber ring 902 on the outer side of the buffer roller 9 will wear out after long-term use. The worn rubber ring 902 should be replaced with a new one, or a rubber ring 902 of a different material should be replaced. Rubber rings 902 of different hardness should be installed according to the actual situation.

[0038] like Figure 4 As shown, a top guide rail 706 is fixedly installed at the bottom of the platform 8. A disassembly slider 707 and a reset slider 708 are installed on the top guide rail 706. The disassembly slider 707 is slidably connected to the top guide rail 706, and the reset slider 708 is fixedly connected to the top guide rail 706. The disassembly slider 707 is fixedly connected to the left closure bridge 7, and the reset slider 708 is fixedly connected to the right closure bridge 7. When the two closure bridges 7 are moving, the disassembly slider 707 will pass through the top guide rail 706, and the platform 8 will have a relatively stable position, so that personnel can stand on the platform 8 to carry out grouting operations.

[0039] like Figure 1 As shown, guardrail holes 801 are provided on both the left and right sides of the platform plate 8. Guardrails can be detachably installed in the guardrail holes 801. Two rows of guardrails can be installed on the platform plate 8 to protect the operators. When the device is being transported, the guardrails are removed to prevent collisions during transportation.

[0040] like Figure 5As shown, the grout auxiliary component includes a positioning port at the center of the platform plate 8, in which a discharge ring 10 is fixedly installed. A discharge cylinder 1002 is slidably installed on the inner side of the discharge ring 10. A sliding auxiliary mechanism is provided between the discharge ring 10 and the discharge cylinder 1002. A flared mouth 1003 is provided at the top of the discharge cylinder 1002. The discharge cylinder 1002 and the flared mouth 1003 are made of high-speed steel. When the input port of the concrete truck is moved above the flared mouth 1003, the discharge cylinder 1002 is inserted into the grouting hole. While grouting, the discharge cylinder 1002 is slowly lifted upward. The discharge cylinder 1002 is made of high-speed steel and is equipped with a vibration device. High-speed steel has a better vibration effect. The cantilever beam cannot be vibrated, which can prevent the concrete grout from sticking to the wall and improve the pouring effect.

[0041] like Figure 5 As shown, the sliding auxiliary mechanism includes a groove 1004 on the outside of the feed cylinder 1002. The cross-section of the groove 1004 is semi-circular. A spherical shell is provided on the inner side of the feed ring 10. A steel ball is installed to rotate the particles. The steel ball is attached to the inner side of the groove 1004. The cooperation between the steel ball and the groove 1004 prevents the feed cylinder 1002 from twisting on its own. In addition, the cooperation between the steel ball and the groove 1004 also reduces the friction between the feed cylinder 1002 and the channel.

[0042] Finally, when using this device, installing the triangular frame 2 would make the entire device's chassis too large and inconvenient to move. When the platform's center of gravity is relatively high, install the triangular frame 2; when the platform's center of gravity is relatively low, remove the triangular frame 2. Assemble or disassemble the triangular frame 2 according to the actual construction situation. Bring the base frame 1 and triangular frame 2 together, insert the angle steel 3 into the corner of the base frame 1 and triangular frame 2, and then insert the pin 301. This operation eliminates the need to remove bolts and saves time. After the grouting of one stage of the cantilever beam is completed, remove the triangular frame 2, and then you can move the base frame 1 and the entire device to a different position, achieving convenient workstation changes. The device is pushed under the cantilever beam, and the electric push rod 101 drives the lifting frame 5 and the mounting frame 6 to rise to the designated height. The platform at the top of the mounting frame 6 can reach the operating position of the cantilever beam. The two sets of beam-holding brackets at the top of the loading platform 704 slide along the bottom guide rail 701. The two sets of beam-holding brackets can hold the cantilever beam. The device uses the ground and the cantilever beam as support points to achieve a relatively stable state. The device will not have too large an amplitude relative to the cantilever beam. The loading platform 704 retracts inwards from the device through the tension spring 709. There is an elastic clamping force between the beam-holding brackets and the crossbeam to prevent rigid collision between the device and the crossbeam, which would cause damage to the device. The buffer wheels move towards the two sides of the constant arm through the tension spring 709. When pressure is applied, and the base frame 1 is positioned relative to the crossbeam at a certain point, the buffer wheel rolls on the crossbeam, eliminating the need to disassemble the beam support. Compared to existing operating platforms, which require equipment adjustments for each position change, this device allows for support repositioning without adjustment. The rubber ring 902 on the outer side of the buffer roller 9 will wear out over time. The worn rubber ring 902 should be replaced with a new one, or a rubber ring 902 of a different material should be installed, depending on the actual situation. When the two merging bridges 7 are in motion, the disassembly slider 707 will interlock on the top guide rail 706, giving the platform plate 8 a relatively stable position. Personnel can then stand on the platform plate 8 to perform grouting operations. Two rows of guardrails can be installed on the platform 8 to protect the operators. When the device is being transported, the guardrails are removed to prevent collisions during transportation. The input port of the concrete truck is moved above the horn 1003, and the discharge cylinder 1002 is inserted into the grouting hole. While grouting, the discharge cylinder 1002 is slowly lifted upwards. The discharge cylinder 1002 is made of high-speed steel and is equipped with a vibration device. High-speed steel has a better vibration effect, while the cantilever beam cannot be vibrated. This prevents the concrete slurry from sticking to the wall and improves the pouring effect. The cooperation between the steel ball and the groove 1004 prevents the discharge cylinder 1002 from twisting on its own, and the cooperation between the steel ball and the groove 1004 also reduces the friction between the discharge cylinder 1002 and the channel.

[0043] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the technical scope of the present invention. Therefore, any minor modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A construction platform for prestressed grouting of large cantilever beams, characterized in that: The system includes a base frame (1) and a triangular frame (2), which are connected by a buckle assembly. Grounding wheels (4) are provided between the base frame (1) and the triangular frame (2). A lifting frame (5) is slidably installed on the inner side of the base frame (1), and a locking guide rail assembly is provided above the lifting frame (5). Two sets of beam supports are provided at the top of the locking guide rail assembly, and a platform plate (8) is provided at the top of the beam supports. A slurry auxiliary assembly is provided at the center of the platform plate (8). The buckle assembly... The component includes an angle steel (3), which encloses the support columns of the base frame (1) and the triangular frame (2), and a pin (301) is inserted through the angle steel (3). The pin (301) fits against the support columns of the base frame (1) and the triangular frame (2). The locking guide rail assembly includes two bottom guide rails (701), which are fixed to the top of the mounting frame (6). Two sets of enclosing sliders (703) are slidably installed on the bottom guide rails (701). A platform (704) is fixedly installed at the top of each set of enclosing sliders (703). The beam support brackets are respectively fixed to the top surface of the platform (704). A traction assembly is provided between the platforms (704). A bolt (705) is detachably provided on the bottom guide rail (701) to block the closing slider (703). The traction assembly includes tension flanges (702), which are respectively fixed to the bottom surface of the platform (704). The tension flanges (702) are connected by tension springs (709). The beam support bracket includes a closing bridge (7), which is fixed to the platform (704) by bolts. On the top surface of 4), buffer wheels that fit against the crossbeam are provided on the side wall of the closing bridge (7). The bottom end of the platform plate (8) is fixedly provided with a top guide rail (706). A disassembly slider (707) and a reset slider (708) are provided on the top guide rail (706). The disassembly slider (707) and the top guide rail (706) are slidably connected. The reset slider (708) and the top guide rail (706) are fixedly connected. The disassembly slider (707) is fixedly connected to the closing bridge (7) on the left side. The reset slider (708) is fixedly connected to the closing bridge (7) on the right side.

2. The platform for prestressed grouting construction of large cantilever beams according to claim 1, characterized in that: The lifting frame (5) is made of four angle steels welded together. Two built-in frames (501) are welded to the inside of the lifting frame (5), and a mounting frame (6) is fixedly installed at the top of the lifting frame (5). The bottom of the lifting frame (5) is inserted into the inside of the base frame (1). Two electric push rods (101) are provided at the top of the base frame (1), and the output end of the electric push rod (101) is connected to the bottom surface of the mounting frame (6).

3. The platform for prestressed grouting construction of large cantilever beams according to claim 1, characterized in that: The buffer wheel includes a buffer roller (9), which is rotatably connected to the side wall of the closing bridge (7) via an elastic bracket (901). A rubber ring (902) is provided on the outer side of the buffer roller (9), and the cross-section of the rubber ring (902) is semi-circular.

4. The platform for prestressed grouting construction of large cantilever beams according to claim 1, characterized in that: The platform slab (8) has guardrail holes (801) on both the left and right sides, and guardrails can be detachably installed in the guardrail holes (801).

5. The platform for prestressed grouting construction of large cantilever beams according to claim 1, characterized in that: The slurry auxiliary component includes a positioning port at the center of the platform plate (8), a feeding ring (10) is fixedly installed in the positioning port, a feeding cylinder (1002) is slidably installed on the inner side of the feeding ring (10), a sliding auxiliary mechanism is provided between the feeding ring (10) and the feeding cylinder (1002), and a flared mouth (1003) is provided at the top of the feeding cylinder (1002). The feeding cylinder (1002) and the flared mouth (1003) are made of high-speed steel.

6. The platform for prestressed grouting construction of a large cantilever beam according to claim 5, characterized in that: The sliding auxiliary mechanism includes a groove (1004) on the outside of the feed cylinder (1002). The cross-section of the groove (1004) is semi-circular. A spherical shell is provided on the inner side of the feed ring (10). A steel ball is installed to rotate the particles. The steel ball is attached to the inner side of the groove (1004).

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