A hole making apparatus for steel box girder segments

Abstract

This invention discloses a drilling device for steel box girder segments, belonging to the field of steel box girder processing. The device includes a concave base and a drilling machine. A support frame slides inside the concave base, and a lifting component is installed inside the support frame. A lifting plate is fixedly connected to the top of the lifting component through the support frame. A drilling cylinder is fixedly connected to the top of the lifting plate, and the drilling machine is mounted on the output end of the drilling cylinder. A fixed cylinder is fixedly connected inside the support frame. The drive gear at the output end of the moving motor meshes with the rack and pinion to move the support frame to the position where drilling is required. At the same time, the lifting motor drives the lead screw to rotate. The moving block threaded on the outer wall of the lead screw drives the lifting plate to move upward through the lifting rod. The lifting plate drives the drilling machine to adjust the height of the drilling position, improving the convenience of drilling, reducing the labor intensity and drilling error of manual drilling, and improving the stability of drilling.

Description

Technical Field

[0001] This invention relates to the field of steel box girder processing technology, specifically to a hole-making device for steel box girder segments. Background Technology

[0002] A steel structure bridge is a bridge whose main load-bearing structure is made of steel. In the process of noise reduction, steel box girders are needed. Steel box girders, also called steel plate box girders, are a common structural form for long-span bridges. They are generally used on bridges with large spans and are called steel box girders because their shape resembles a box.

[0003] In the existing steel box girder installation process, multiple steel box girders are generally combined. The connection between steel box girders requires drilling holes at the connection points of the steel box girder segments, and then connecting them with bolts. However, the volume and weight of the steel box girder segments are very large. When drilling between multiple sets of steel box girder segments, the wall thickness between the steel box girders means that manual drilling with a hand-held drilling machine is required for a long time, resulting in high labor intensity. At the same time, the vibration generated by drilling further aggravates the labor intensity. This makes it easy for the drill bit to get stuck or for the drilling to be unstable during the long drilling process, resulting in the hole position tilting and reducing the quality of drilling construction. Summary of the Invention

[0004] In order to overcome the above-mentioned technical problems, the purpose of this invention is to provide a drilling device for steel box girder segments, so as to solve the problems in the prior art that the large volume of steel box girder segments and the large number of drilling positions required when multiple sets of steel box girders are assembled and installed together cause high labor intensity of manual drilling, and that long-term drilling can easily lead to deviation of the hole position.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A hole-making device for steel box girder segments includes a concave base and a drilling machine. A support frame slides inside the concave base, and a lifting component is installed inside the support frame. A lifting plate is fixedly connected to the top of the lifting component through the support frame. A drilling cylinder is fixedly connected to the top of the lifting plate. The drilling machine is mounted on the output end of the drilling cylinder. A fixing cylinder is fixedly connected inside the support frame, and a strong magnetic plate is fixedly connected to the output end of the fixing cylinder through the support frame.

[0007] As a further embodiment of the present invention: the inner walls on both sides of the concave base are provided with grooves, and the support frame is fixedly connected to the two sides with sliders, and the two sets of sliders are slidably connected in the two sets of grooves respectively.

[0008] As a further aspect of the present invention: the lifting component includes a lead screw, which is rotatably connected to the inner wall of the support frame, and a movable block is threadedly connected to the outer wall of the lead screw. Lifting rods are fixedly connected to both sides of the movable block, and the top of the lifting rods passes through the support frame and is connected to the bottom of the lifting plate.

[0009] As a further embodiment of the present invention: two sets of limiting plates are fixedly connected to the top of the lifting plate, and a driving block is slidably connected between the two sets of limiting plates. The driving block is connected to the output end of the drilling cylinder, and the drilling machine is fixedly connected to the top of the driving block.

[0010] As a further embodiment of the present invention: the upper and lower sides of the strong magnetic plate are fixedly connected with sliding sleeves, and the two sets of sliding sleeves are slidably connected with top rods. The top of the lifting plate is fixedly connected with a driving sleeve, and the driving sleeve is slidably connected with a driving rod. The driving sleeve is located between the two sets of limiting plates. One end of the driving rod passes through the driving sleeve and is opposite to the driving block. An airbag is provided inside the driving sleeve, and the airbag is connected to the two sets of sliding sleeves through connecting pipes respectively.

[0011] As a further aspect of the present invention: the two sets of push rods have different lengths, and a return spring is sleeved on the outer wall of each set of push rods, with the two ends of the return spring abutting against the inner wall of the sliding sleeve and one end of the push rod, respectively.

[0012] As a further aspect of the present invention: a movable motor is fixedly connected to the inner wall of the bottom of the support frame, the output end of the movable motor passes through the support frame and is fixedly connected to a drive gear, a rack is fixedly connected to the top of the concave base, and the drive gear meshes with the rack.

[0013] As a further embodiment of the present invention: a scale groove is provided on the top of one side of the concave base, and a scale ruler is fixedly connected to the top of the lifting plate.

[0014] The beneficial effects of this invention are:

[0015] In this invention, the drive gear at the output end of the moving motor meshes with the rack to move the support frame to the position where drilling is required. Then, the lifting cylinder is activated, and the lifting motor drives the lead screw to rotate. The moving block connected to the threaded outer wall of the lead screw drives the lifting plate to move upward through the lifting rod. The lifting plate drives the drilling machine to adjust the height of the drilling position. Then, the drilling cylinder is activated, and the drive block at the output end of the drilling cylinder drives the drilling machine to move and drill. This improves the convenience of drilling, reduces the labor intensity and drilling error of manual drilling, and improves the stability of drilling. Attached Figure Description

[0016] The invention will now be further described with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the connection structure between the strong magnetic plate and the sliding sleeve of the present invention;

[0019] Figure 3 This is the present invention. Figure 1 Enlarged structural diagram of section A;

[0020] Figure 4 This is a schematic diagram of the concave base structure in this invention. Figure 1 ;

[0021] Figure 5 This is a schematic diagram of the concave base structure in this invention. Figure 2 .

[0022] In the diagram: 1. Concave base; 101. Groove; 102. Scale groove; 2. Support frame; 201. Slider; 3. Lifting component; 301. Lead screw; 302. Moving block; 303. Lifting rod; 304. Lifting motor; 4. Lifting plate; 401. Scale; 5. Drilling cylinder; 501. Drive block; 502. Limiting plate; 6. Drilling machine; 7. Fixed cylinder; 701. Strong magnetic plate; 702. Sliding sleeve; 703. Top rod; 704. Return spring; 8. Moving motor; 801. Drive gear; 802. Rack; 9. Drive sleeve; 901. Drive rod; 902. Airbag; 903. Connecting pipe. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] like Figures 1-5 As shown, a hole-making device for steel box girder segments includes a concave base 1 and a drilling machine 6. A support frame 2 slides inside the concave base 1. Grooves 101 are formed on the inner walls of both sides of the concave base 1. Slider blocks 201 are fixedly connected to both sides of the support frame 2. Two sets of sliders 201 are slidably connected in the two sets of grooves 101 respectively. A lifting component 3 is provided inside the support frame 2. A lifting plate 4 is fixedly connected through the top of the lifting component 3 and through the support frame 2. A drilling cylinder 5 is fixedly connected to the top of the lifting plate 4. The drilling machine 6 is set on the output end of the drilling cylinder 5. A fixing cylinder 7 is fixedly connected inside the support frame 2. A strong magnetic plate 701 is fixedly connected through the output end of the fixing cylinder 7 and through the support frame 2.

[0025] like Figure 1As shown, in order to facilitate the adjustment of the height of the drilling machine 6, the above-mentioned lifting component 3 includes a lead screw 301. One end of the lead screw 301 is rotatably connected to the top of the inner wall of the support frame 2. A lifting motor 304 is fixedly connected to the bottom of the support frame 2. The output end of the lifting motor 304 is connected to one end of the lead screw 301. A moving block 302 is threadedly connected to the outer wall of the lead screw 301. Lifting rods 303 are fixedly connected to both sides of the moving block 302. The top of the lifting rod 303 passes through the support frame 2 and is connected to the bottom of the lifting plate 4, thereby driving the lifting plate 4 to move up and down.

[0026] like Figure 1 and Figure 3 As shown, the top of the lifting plate 4 is fixedly connected to two sets of limiting plates 502, and a driving block 501 is slidably connected between the two sets of limiting plates 502. The driving block 501 is connected to the output end of the drilling cylinder 5, and the drilling machine 6 is fixedly connected to the top of the driving block 501.

[0027] like Figure 1 and Figure 2 As shown, to facilitate the removal of the strong magnetic plate 701, the strong magnetic plate 701 is fixedly connected to the upper and lower sides with sliding sleeves 702. The two sets of sliding sleeves 702 are slidably connected to the top rods 703. The top of the lifting plate 4 is fixedly connected to the drive sleeve 9. The drive sleeve 9 is slidably connected to the drive rod 901. The drive sleeve 9 is located between the two sets of limiting plates 502. At the same time, one end of the drive rod 901 passes through the drive sleeve 9 and is opposite to the drive block 501, so that the drive block 501 can push the drive rod 901 to move when it moves and resets. The drive sleeve 9 is provided with an airbag 902. The airbag 902 is connected to the two sets of sliding sleeves 702 through the connecting pipe 903 to inflate the sliding sleeve 702 with air.

[0028] like Figure 1 and Figure 2 As shown, the two sets of push rods 703 have different lengths, so when the two sets of push rods 703 move, they move out of the sliding sleeve 702 one after the other, thus lifting one end of the strong magnetic plate 701 first and then lifting the other end for removal, reducing the difficulty of removal. The outer walls of the two sets of push rods 703 are fitted with return springs 704, and the two ends of the return springs 704 abut against the inner wall of the sliding sleeve 702 and one end of the push rod 703, respectively, thereby driving the push rod 703 to return to the sliding sleeve 702.

[0029] like Figure 1 and Figure 4As shown, in order to facilitate the adjustment of the drilling position, a moving motor 8 is fixedly connected to the inner wall of the bottom of the support frame 2. The output end of the moving motor 8 passes through the support frame 2 and is fixedly connected to a drive gear 801. A rack 802 is fixedly connected to the top of the concave base 1. The drive gear 801 meshes with the rack 802. The moving motor 8 drives the drive gear 801 to rotate and mesh with the rack 802, thereby driving the support frame 2 to move and adjust the drilling position of the drilling machine 6 on the support frame 2.

[0030] like Figure 1 As shown, in order to facilitate the control of the distance and height between the drill holes, a scale groove 102 is provided on the top of one side of the concave base 1 to adjust the distance of the drilling machine 6 moving left and right. At the same time, a scale 401 is fixedly connected to the top of the lifting plate 4 to adjust the height of the drilling machine 6 moving up and down.

[0031] In this invention, the other side of the concave base 1 is configured in a multi-segment manner, with each pair of concave bases 1 connected by a fixed pin groove, thereby reducing the volume of the concave base 1 and facilitating its transportation and installation.

[0032] The working principle of this invention is as follows: When in use, the concave base 1 is fixed to the bottom of the steel box girder where a hole needs to be drilled using bolts or other clamping devices. Then, the slider 201 at the bottom of the support frame 2 slides into the groove 101 inside the concave base 1. At the same time, the drive gear 801 at the bottom of the support frame 2 meshes with the rack 802 on the concave base 1. Then, the moving motor 8 is started. The drive gear 801 at the output end of the moving motor 8 meshes with the rack 802, driving the support frame 2 to move to the position where a hole needs to be drilled. Then, the lifting motor 304 is started. The lifting motor 304 drives the lead screw 301 to rotate. The movable block 302 with the threaded connection on the outer wall drives the lifting plate 4 to move upward through the lifting rod 303. The lifting plate 4 drives the drilling machine 6 to adjust the height of the drilling position. Then, the drilling cylinder 5 is started. The drive block 501 at the output end of the drilling cylinder 5 drives the drilling machine 6 to move to the drilling position and then drill. After drilling is completed, the drilling cylinder 5 is started to drive the drilling machine 6 to reset. Then, the movable motor 8 is started again to drive the drilling machine 6 on the support frame 2 to move to the next hole position for drilling. This improves the convenience of drilling, reduces the labor intensity and drilling error of manual drilling, and improves the stability of drilling.

[0033] To improve the stability and accuracy of the drilling position of the drilling machine 6 during drilling, and to prevent the support frame 2 from tilting due to the reaction force applied by the drilling machine 6 during drilling, and to avoid vibrations caused by drilling, the fixing cylinder 7 is activated when the drilling machine 6 contacts the drilling position. The fixing cylinder 7 drives the strong magnetic plate 701 to contact and adhere to the beam surface at the drilling position, fixing the support frame 2. This further improves the stability of the drilling machine 6 during drilling, reduces the shaking of the drilling machine 6 during operation, and reduces the tilting caused by the backward force applied during drilling, thus improving the accuracy of the drilling position. After drilling is completed, when the drilling cylinder 5 drives the drilling machine 6 to reset, the drive block 501 on the output end of the drilling cylinder 5 moves and abuts against the drive rod 901, pushing the drive rod 901 to slide within the drive sleeve 9. The airbag 902 is compressed, and the gas inside the airbag 902 enters the two sets of sliding sleeves 702 through the connecting pipe 903, thereby pushing the two sets of push rods 703 to move. The longer set of push rods 703 moves out of the sliding sleeve 702 first and contacts the beam surface, applying a pushing force to the beam surface, thereby pushing up one side of the strong magnetic plate 701 and releasing the adsorption state of one end of the strong magnetic plate 701. Then, the other set of shorter push rods 703 contacts the beam surface and pushes up the other side of the strong magnetic plate 701, thereby completing the detachment of the strong magnetic plate 701 from the beam surface. Then, the fixing cylinder 7 is activated to drive the strong magnetic plate 701 to reset. At the same time, the above method releases the magnetic adsorption of the strong magnetic plate 701, ensuring the stability of the adsorption of the high magnetic force strong magnetic plate 701 while facilitating the disassembly of the strong magnetic plate 701.

[0034] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A hole-making device for steel box girder segments, comprising a concave base (1) and a drilling machine (6), characterized in that, The concave base (1) has a support frame (2) that slides inside. The support frame (2) has a lifting component (3) inside. The top of the lifting component (3) passes through the support frame (2) and is fixedly connected to a lifting plate (4). The top of the lifting plate (4) is fixedly connected to a drilling cylinder (5). The drilling machine (6) is located on the output end of the drilling cylinder (5). The support frame (2) is fixedly connected to a fixed cylinder (7), and the output end of the fixed cylinder (7) passes through the support frame (2) and is fixedly connected to a strong magnetic plate (701). The top of the lifting plate (4) is fixedly connected to two sets of limiting plates (502), and a driving block (501) is slidably connected between the two sets of limiting plates (502). The driving block (501) is connected to the output end of the drilling cylinder (5), and the drilling machine (6) is fixedly connected to the top of the driving block (501). The strong magnetic plate (701) is fixedly connected to the upper and lower sides with sliding sleeves (702). The two sets of sliding sleeves (702) are slidably connected to the top rods (703). The top of the lifting plate (4) is fixedly connected to the drive sleeve (9). The drive sleeve (9) is slidably connected to the drive rod (901). The drive sleeve (9) is located between the two sets of limiting plates (502). One end of the drive rod (901) passes through the drive sleeve (9) and is opposite to the drive block (501). An airbag (902) is provided inside the drive sleeve (9). The airbag (902) is connected to the two sets of sliding sleeves (702) through the connecting pipe (903). The two sets of push rods (703) have different lengths. Both sets of push rods (703) are fitted with a return spring (704) on their outer walls. The two ends of the return spring (704) abut against the inner wall of the sliding sleeve (702) and one end of the push rod (703), respectively.

2. The hole-making equipment for steel box girder segments according to claim 1, characterized in that, The concave base (1) has grooves (101) on its inner walls on both sides, and the support frame (2) has sliders (201) fixedly connected on both sides. The two sets of sliders (201) are slidably connected in the two sets of grooves (101).

3. The hole-making equipment for steel box girder segments according to claim 1, characterized in that, The lifting component (3) includes a lead screw (301), which is rotatably connected to the inner wall of the support frame (2). A moving block (302) is threadedly connected to the outer wall of the lead screw (301). Lifting rods (303) are fixedly connected to both sides of the moving block (302). The top of the lifting rod (303) passes through the support frame (2) and is connected to the bottom of the lifting plate (4).

4. The hole-making equipment for steel box girder segments according to claim 1, characterized in that, A moving motor (8) is fixedly connected to the bottom inner wall of the support frame (2). The output end of the moving motor (8) passes through the support frame (2) and is fixedly connected to a drive gear (801). A rack (802) is fixedly connected to the top of the concave base (1). The drive gear (801) meshes with the rack (802).

5. The hole-making equipment for steel box girder segments according to claim 1, characterized in that, The concave base (1) has a scale groove (102) on one side of the top, and the lifting plate (4) has a scale ruler (401) fixedly connected to the top.

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