CN117071440A - A self-propelled and hydraulically lifted steel pre-tied inner frame - Google Patents

Abstract

The invention relates to the technical field of bridge engineering construction equipment, and specifically relates to a self-driven and hydraulic lifting type steel bar pre-wired inner frame, which includes a steel bar inner frame. A support rod is provided in the area below the steel bar inner frame, and a support rod is provided in the steel bar inner frame. There are several lifting devices for raising and lowering the steel inner frame. The lower end of the steel inner frame is provided with a walking track. The lower end of the walking track is provided with a walking device. The walking device is cooperatively connected with the walking track. The walking track is used to cooperate with the walking device to make the steel inner frame travel. By setting a walking device at the lower end of the steel inner frame, and also setting a walking track matching the walking device on the steel inner frame, this makes the The inner frame of steel bars can be matched with the walking track set by itself through the walking device, so as to achieve the purpose of walking of the inner frame of steel bars, and the purpose of driving the inner frame of steel bars to lift can be achieved by setting a lifting device in the inner frame of steel bars.

Description

A self-propelled and hydraulic lifting type steel pre-tied inner frame

Technical field

The invention relates to the technical field of bridge engineering construction equipment, in particular to a self-driven and hydraulic lifting type steel bar pre-rolled inner frame.

Background technique

The steel frame of the railway simply supported box girder should be tied as a whole and hoisted into the formwork as a whole. The interior of the box girder is hollow. In addition to the cross-connection of the steel bars at the top of the box girder with the web steel bars, the steel bars at other positions on the top are in a "suspended" state. Therefore, the top steel bars need to be tied with special pre-tie tooling to support and position the steel bars. The steel bars are internally framed. The binding work is very important. It directly affects the quality and safety of the box beams. In order to improve the binding efficiency and quality of the steel inner frame, the method of overall binding and overall hoisting into the formwork is usually used. This requires the use of a special Tooling equipment is used to support and position each steel bar in the steel bar inner frame, especially the fixation and positioning of the roof steel bars. This kind of tooling is called a pre-tie inner frame. The pre-tie inner frame is a movable platform that can be adjusted according to different spans and The height of the box girder adjusts its own length and height, so that the box girder steel bars can be tied to the pre-tied inner frame, and the pre-tied inner frame can be removed from the steel bar inner frame after the banding is completed, realizing the cycle of the pre-tied inner frame. Utilization, for example, CN209780271U proposes an adjustable integral steel bar pre-tie inner frame. The length of the pre-tie frame is adjusted by dividing the pre-tie inner frame into a fixed section and an adjustable section with adjustable length, and the working platform is realized by increasing or decreasing the adjustable section. The length adjustment allows the pre-tied inner frame to be suitable for box beams of different spans. The pre-tied inner frame can be raised and lowered as a whole through its own lifting device, so that the inner frame can be separated from the steel bars after the steel bars are tied. Then, winches are installed at both ends of the pre-tied frame in the longitudinal direction to realize the longitudinal movement of the pre-tied inner frame. Achieve the purpose of longitudinal movement of the inner frame.

This pre-tied inner frame is pulled by a winch and has the following shortcomings:

(1) Since the winch uses a motor to drive the steel wire rope reel to rotate to realize the tensioned movement of the pre-rolled inner frame, the pre-rolled inner frame is affected by inertia force, and the longitudinal positioning is inaccurate during the traveling process, and it is easy to cause over or under travel, resulting in internal damage. The alignment of the two ends of the frame and the outer frame is not accurate. When walking through the position, a winch is required to pull and align the pre-wired inner frame in the opposite direction from the other end. The workload of repeated on-site operations is large.

(2) The traction direction of the winch must coincide with the center line of the inner frame's traveling line. Otherwise, diagonal traction will cause damage to the overall structure of the inner frame and its legs. At the same time, the lateral position of the pre-bundled inner frame is prone to deviation, resulting in a large positioning error of the steel bars. . At the same time, there needs to be enough space between the installation position of the winch and the pre-wired frame to ensure that the pre-wired inner frame is completely separated from the steel cage. During the operation, the winch covers a large area of the working area, and there are great safety risks within the winch working area.

Contents of the invention

The purpose of this invention is to: Aim at the safety hazards and quality risks caused by using a winch to pull the pre-wired inner frame in the existing technology, as well as the lateral displacement deviation of the pre-wired inner frame when walking, And in the existing technology, the lifting and lowering of the steel inner frame relies on manual labor, which is time-consuming and labor-intensive and has low accuracy. The elevation of the beam body is not in place, the surface steel bars have fallen or shifted, and the binding quality and strength are poor. When the pre-tied inner frame is withdrawn, the steel bars are scratched, damaged and worn, causing high maintenance costs and major safety hazards. A self-driven and hydraulic lifting type steel pre-tied inner frame is provided.

In order to achieve the above objects, the technical solutions adopted by the present invention are:

A self-driven and hydraulic lifting type steel bar pre-rolled inner frame, including a steel bar inner frame, a support rod is provided in the area below the steel bar inner frame, and several lifting devices are provided in the steel bar inner frame for lifting the steel bar inner frame Ascending and descending, the lower end of the steel inner frame is provided with a walking track, the lower end of the walking track is provided with a walking device, the walking device is cooperatively connected with the walking track, and the walking rail is used to cooperate with the walking device so that The inner frame of the steel bars is used for walking.

The invention is a self-driven and hydraulic lifting type steel bar pre-rolled inner frame. By setting a lifting device in the steel bar inner frame to control the rise and fall of the steel bar inner frame, the beam body is raised and lowered to a preset elevation, which can ensure that the surface steel bars are Reliable support to improve the quality of lashing; at the same time, it can also avoid scratches between the frame and the steel bars, making it easy to quickly exit the pre-tied inner frame. By setting a walking device at the lower end of the steel inner frame, and also setting a walking device on the inner steel frame that matches the walking device Track, when the walking device is working, because the walking device matches the walking track, the walking device works along the path of the walking track, so that the reinforced inner frame can match the walking track set by itself through the walking device, thereby To achieve the purpose of walking the inner frame of steel bars, since the walking track and the walking device in the present invention match each other, the inner frame of steel bars will not have displacement deviation when walking, and the device is connected to the inner frame of steel bars through the walking device. The walking track cooperates with the walking track to avoid the safety problems caused by the hoist exerting force on the walking of the steel inner frame mentioned in the background technology, and there are also support rods in the area below the steel inner frame for The reinforced inner frame ensures stability when walking and at the same time prevents the walking device from being damaged by excessive force.

As a preferred solution of the present invention, the steel inner frame includes an upper beam and a lower beam. The upper beam and the lower beam are connected through a telescopic rod, and the lifting device is provided between the upper beam and the lower beam. space, so that it can be lifted while ensuring the structural strength of the steel inner frame.

As a preferred solution of the present invention, a hydraulic oil pump is also provided in the inner frame of the steel bar. The hydraulic oil pump is connected to the lifting device through an oil pipe and is used to control the lifting of the lifting system.

As a preferred solution of the present invention, the walking device includes a reduction motor and a bracket cavity welded by several sections of steel. The reduction motor is located inside the bracket cavity. A gear is also provided in the bracket cavity. The reduction motor is cooperatively connected with the gear so that the walking device can work.

As a preferred solution of the present invention, the walking track is located at the lower end surface of the steel inner frame, and the walking track includes a channel steel part and a rack connected to the lower end of the channel steel part. The walking track is configured as a channel steel and a toothed rack. The combination of the bars makes the steel inner frame less likely to deviate when walking.

As a preferred solution of the present invention, the position of the rack in the walking track corresponds to the position of the gear in the walking device, so that the gear can mesh with the rack, ensuring that the device can travel.

As a preferred solution of the present invention, the lifting device body is a jack, and each jack is connected to the hydraulic oil pump through an oil pipe to realize the lifting of the steel inner frame.

As a preferred solution of the present invention, the hydraulic oil pump and the traveling device are both connected to the same electrical control center.

As a preferred solution of the present invention, the module of the rack is the same as the module of the gear, which ensures accurate meshing between the rack and the gear and improves the accuracy of transmission.

As a preferred solution of the present invention, a hydraulic cylinder is provided at the bottom of the bracket cavity, and the engagement and disengagement of the gear and the rack are controlled by the operation of the hydraulic cylinder.

As a preferred solution of the present invention, one end of the support rod in contact with the inner frame of the steel bar is provided with a roller to reduce friction when the inner frame of the steel bar moves.

In summary, due to the adoption of the above technical solutions, the beneficial effects of the present invention are:

1. The present invention is a self-driven and hydraulic lifting type steel bar pre-bundled inner frame. The lifting device realizes automatic adjustment of the steel bar inner frame and lifts the beam body to a preset elevation to ensure the accurate position and stable strength of the surface steel bars and avoid The frame body and the steel bars are scratched to reduce the damage and wear of the steel bars, and the pre-fastened inner frame can be quickly withdrawn, shortening the construction period, and improving work efficiency and project quality.

2. The present invention is a self-driven and hydraulic lifting type steel bar pre-rolled inner frame. A walking device is provided at the lower end of the steel bar inner frame, and the walking device is a power transmission device, and a walking device is also provided on the steel bar inner frame. Matching walking track, when the walking device is working, because the walking device matches the walking track, the walking device works along the path of the walking track, so that the steel inner frame can pass through the walking device and the walking track set by itself Matching, so as to achieve the purpose of walking of the steel inner frame. Since the walking track and the walking device in the present invention match each other, the steel inner frame will not have displacement deviation when walking, and the device is connected to the steel bar through the walking device. The walking track on the inner frame cooperates with the walking track to avoid the safety problems caused by using the winch to exert force on the walking of the steel inner frame mentioned in the background technology, and there is also a support in the area below the steel inner frame. The rod is used to ensure the stability of the reinforced inner frame when walking, and to prevent the walking device from being damaged by excessive force.

3. The present invention is a self-driven and hydraulic lifting type steel pre-rolled inner frame. The work of the gear connected to it is controlled by the reduction motor in the walking device, and the walking track body is composed of grooved steel parts and racks. The cooperation between the walking device and the walking track is the meshing between the gear and the rack, and its walking is controlled by a reduction motor, and the module of the gear and the rack is the same, ensuring accurate positioning of the steel inner frame and reducing The deviation of lateral displacement is reduced.

Description of the drawings

Figure 1 is a schematic structural diagram of the present invention;

Figure 2 is a schematic structural diagram of the steel inner frame of the present invention;

Figure 3 is a schematic diagram of the structure of the present invention without rising;

Figure 4 is a schematic diagram of the structural ascent of the present invention;

Figure 5 is a schematic structural diagram of the walking device of the present invention;

Figure 6 is a partially enlarged schematic view of A in Figure 1;

FIG. 7 is a partially enlarged schematic view of B in FIG. 1 .

Icon: 1-Reinforced inner frame; 11-upper beam; 12-lower beam; 13-hydraulic oil pump; 14-oil pipe; 15-traveling track; 151-channel steel; 152-rack; 2-travel device; 21- Bracket cavity; 22-reduction motor; 23-gear; 3-hydraulic cylinder; 4-support rod; 41-roller; 5-jack; 6-electrification lead; 7-electrical control center.

Detailed ways

The present invention will be described in detail below with reference to the accompanying drawings.

In order to make the purpose, technical solutions and advantages of the present invention more clear, the present 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 here are only used to explain the present invention and are not intended to limit the present invention.

Example 1

As shown in Figure 1-3, a self-propelled and hydraulic lifting type steel pre-wired inner frame includes a steel bar inner frame 1 welded by section steel. The steel bar inner frame 1 is provided with a lifting device for lifting the steel bar inner frame 1. , a walking device 2 for driving the steel inner frame 1 to travel is provided below the steel inner frame 1. A walking track 15 corresponding to the walking device 2 is provided below the steel inner frame 1. The walking track 15 is used to communicate with the walking device. 2 cooperates to drive the reinforced inner frame 1 to move through the work of the walking device 2;

Further, the body of the above-mentioned walking device 2 is a power transmission device, and works in cooperation with the walking track 15 to convert mechanical energy into kinetic energy to drive the walking of the reinforced inner frame 1 on the walking track 15;

Further, a number of support rods 4 are provided in the area below the steel inner frame 1 for supporting the steel inner frame 1. When the rack 152 at the lower end of the steel inner frame 1 meshes with the gear 23 of the walking device 2, the steel inner frame can be supported. 1 plays a supporting role to prevent gear 23 from being unable to work due to excessive force.

The above-mentioned steel inner frame 1 is composed of an upper beam 11 and a lower beam 12, and a telescopic rod is provided between the upper beam 11 and the lower beam 12 for connection. The above-mentioned lifting device is also located between the upper beam 11 and the lower beam 12. This arrangement drives the telescopic rod between the upper beam 11 and the lower beam 12 to move through the lifting device to achieve the lifting and lowering of the steel inner frame 1, as shown in Figure 2-4.

The above-mentioned reinforced inner frame 1 is also equipped with a hydraulic oil pump 13. The hydraulic oil pump 13 is connected to the lifting device through an oil pipe 14, and serves the purpose of controlling the lifting device to lift through the oil pipe 14 through the hydraulic oil pump 13, as shown in Figure 1- 2 shown.

The above-mentioned walking device 2 includes a reduction motor 22 and a bracket cavity 21 welded by a plurality of sections of steel. The reduction motor 22 is located inside the bracket cavity 21. A gear 23 is also provided in the bracket cavity 21. The reduction motor 22 is matched with the gear 23, and the gear 23 is matched with the walking track 15. The bracket cavity 21 is provided to better avoid damage to the internal reduction motor 22, and is also connected to the reduction motor 22. The gear 23 is provided, and the gear 23 and the reduction motor 22 can cooperate to ensure the walking of the steel inner frame 1 and provide power for its walking, as shown in Figure 5.

The above-mentioned walking track 15 is located at the lower end surface of the steel inner frame 1, and the walking track 15 includes a channel steel part 151 and a rack 152 connected to the lower end of the channel steel part 151. By setting the walking track 15 as The structure of the channel steel part 151 and the rack 152 enables the walking track 15 to cooperate with the gear 23 in the walking device 2 to ensure the stability and accuracy of walking, as shown in Figure 6 .

The position of the rack 152 in the above-mentioned walking track 15 corresponds to the position of the gear 23 in the walking device 2, ensuring the meshing of the gear 23 and the rack 152.

The above-mentioned lifting device body is a jack 5 connected to the upper beam 11 and the lower beam 12 respectively, and each jack 5 is connected to the hydraulic oil pump 13 through an oil pipe 14.

The above-mentioned traveling device 2 and hydraulic oil pump 13 are both connected to the same electrical control center 7 .

The module of the above-mentioned rack 152 is the same as the module of the gear 23. By setting the gear 23 and the rack 152 to the same module, the accuracy of the meshing of the gear 23 and the rack 152 during walking is ensured. At the same time, the efficiency of transmission is improved;

Optionally, a hydraulic cylinder 3 is provided at the bottom of the bracket cavity 21. The hydraulic cylinder 3 controls the lifting and lowering of the bracket cavity 21 and simultaneously controls the lifting and lowering of the internal reduction motor 22 and gear 23. This hydraulic cylinder can be used when walking is not required. 3. Disengage the gear 23 from the gear rack 152. When walking is required, the hydraulic cylinder 3 can be used to engage the gear 23 with the rack 152 and start working, as shown in Figure 6.

The end of the above-mentioned support rod 4 that is in contact with the steel inner frame 1 is provided with a roller 41. When the steel inner frame 1 contacts the support rod 4 and starts walking through the action of the walking device 2, it can pass through the forehead of the upper end of the support rod 4. The rollers 41 are used to reduce the friction during walking and improve the smoothness of walking, as shown in Figure 7.

Example 2

According to the structure and principle of a self-driven and hydraulic lifting steel pre-rolled inner frame in Embodiment 1, it is applied in practice. The actual application situation is as follows:

1. Walking device

The traveling device 2 is composed of a bracket cavity 21, a hydraulic cylinder 3, an electrical control center 7, a gear 23, and a reduction motor 22. The bracket cavity 21 is welded from a 100×100×6mm square steel pipe and bears all the loads of the walking device 1 during operation.

Four hydraulic cylinders 3 are installed at the bottom of the bracket cavity 21 as supports to control the lifting and lowering of the traveling device 1, thereby enabling the gear 23 to engage or disengage from the rack 152 of the steel inner frame 1.

A reduction motor 22 and a gear 23 are installed in the middle of the bracket cavity 21 of the traveling device 1 . The parameters of the reduction motor 22 are: power 5.5kW, output speed 20R/min, output torque 2700N·m, conveying speed 16m/min, thrust 20000N; the parameters of the gear 23 are: diameter 270mm, module 10, and number of teeth 27. The two serve as power output mechanisms, and control the walking speed of the inner frame by adjusting the speed of the power gear through the motor gear reducer.

2. Walking track

The walking track 15 is composed of 16# channel steel (channel steel part 151) and an 80×80mm, module 10 rack 152. The rack 152 and the channel steel part 151 are welded into one body, and the channel steel part 151 and the steel inner frame 1 are welded into one body.

3. Lifting and lowering of pre-rolled inner frame of steel bars

The device for controlling the lifting of the pre-rolled inner frame of steel bars is composed of 24 hydraulic oil pumps 13 and the inner frame of steel bars 1. When the box girder steel bars are tied with gluten, the steel inner frame 1 is lifted as a whole to support and position the roof steel bars, and then the steel bars are tied; after the steel bars are tied, the height of the inner frame is also lowered through the hydraulic oil pump 13, and then self-propelled walking is performed. It can be detached from the formed steel cage;

The parameters in the above method are only used based on the on-site environment. The binding of 5-hole 40m railway box girder steel bars has been completed. Compared with the pre-tied tires pulled by the winch, the installation and removal are quick, the installation accuracy is high, and the steel bars are positioned. Accurate, avoids repeated alignment, reduces size adjustment time, reduces labor intensity, improves work efficiency, and also avoids safety risks to construction during the use of the winch.

The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection of the present invention. within the range.

Claims (9)

1. A self-driven and hydraulic lifting type steel bar pre-rolled inner frame, which is characterized in that it includes a steel bar inner frame (1), and a support rod (4) is provided in the area below the steel bar inner frame (1). The frame (1) is provided with several lifting devices for raising and lowering the steel inner frame (1). The lower end of the steel inner frame (1) is provided with a walking track (15). The lower end of the walking track (15) A walking device (2) is provided, and the walking device (2) is cooperatively connected with the walking track (15). The walking track (15) is used to cooperate with the walking device (2) to make the steel bar inner frame (1) Walk. 2. A self-driven and hydraulic lifting type steel bar pre-rolled inner frame according to claim 1, characterized in that the steel bar inner frame (1) includes an upper beam (11) and a lower beam (12). The upper beam (11) and the lower beam (12) are connected by a telescopic rod, and the lifting device is provided between the upper beam (11) and the lower beam (12). 3. A self-driven and hydraulic lifting type steel bar pre-rolled inner frame according to claim 2, characterized in that a hydraulic oil pump (13) is also provided in the steel bar inner frame (1), and the hydraulic oil pump (13) 13) It is connected to the lifting device through the oil pipe (14) and is used to control the lifting of the lifting system. 4. A self-driven and hydraulic lifting type steel bar pre-rolled inner frame according to claim 1, characterized in that the walking device (2) includes a reduction motor (22) and a bracket cavity welded by a plurality of sections of steel. The body (21), the reduction motor (22) is located inside the bracket cavity (21), the bracket cavity (21) is also provided with a gear (23), the reduction motor (22) and the The gear (23) is matched and connected, and the gear (23) is matched and connected with the walking track (15). 5. A self-driven and hydraulic lifting type steel pre-barred inner frame according to claim 1, characterized in that the walking track (15) includes a channel-shaped steel part (151) and a channel-shaped steel part (151) connected to the channel-shaped steel part (151). 151) The rack (152) at the lower end. 6. A self-driven and hydraulic lifting type steel bar pre-rolled inner frame according to any one of claims 4-5, characterized in that the position of the rack (152) in the walking track (15) is consistent with the position of the rack (152) in the walking track (15). The position of the gear (23) in the walking device (2) corresponds to the position. 7. A self-driven and hydraulic lifting type steel bar pre-rolled inner frame according to claim 3, characterized in that the lifting device body is a jack (5), and each of the jacks (5) is connected to the The hydraulic oil pump (13) is connected through the oil pipe (14) and is used to realize the lifting and lowering of the steel inner frame (1). 8. A self-driven and hydraulic lifting type steel pre-tied inner frame according to claim 3, characterized in that the hydraulic oil pump (13) and the traveling device (2) are connected to the same electrical control center (7) connect. 9. A self-driven and hydraulic lifting type steel bar pre-rolled inner frame according to claim 1, characterized in that one end of the support rod (4) in contact with the steel bar inner frame (1) is provided with a roller ( 41).