A connection device for butt welding of reinforcing bars between precast bridge pier segments

Abstract

This invention discloses a connection device for butt welding of reinforcing bars between precast bridge pier segments. The key technical features are: a hollow column containing a base column; a base plate fixed to the lower end of the base column; a first telescopic rod fixed to the side surface of the hollow column; a first strip-shaped clamping seat fixed to the first telescopic rod; an adjusting column inserted into the base column; a movable seat fixed to the hollow column; a lead screw rotatably connected to the movable seat via a bearing; a threaded block threaded onto the lead screw; the threaded block fixedly connected to the adjusting column; and a second telescopic rod fixed to one side. This device allows the two butt welded reinforcing bars to fit firmly together, facilitating welding and improving the efficiency and quality of the butt welding. The device is small in size, lightweight, easy to move, and flexible in use, allowing the connection angle to be flexibly adjusted according to the direction of the butt welding.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to a connection device for butt welding of steel bars between precast bridge pier segments. Background Technology

[0002] Segmental precast bridge piers commonly use grouting connection technology with steel bar sleeves. This connection requires pre-embedding grouting sleeves and reserving steel bar joints within the precast segments, which places high demands on installation accuracy and construction. When the bridge pier is tall or has a large cross-sectional dimension, the bridge pier needs to be divided into multiple segments along the height direction due to the limitation of segment transportation dimensions. Since the length of the steel bars is fixed, the length of the steel bars is often extended as needed. At present, welding is often used to extend the steel bars.

[0003] For example, Chinese patent CN218362946U discloses a steel bar connection device for road and bridge construction, including a main body. The outer wall of the main body has bolt moving grooves on both sides with the middle as the axis. The top of the main body has slider grooves on both sides at half the distance from the axis. The bottom of the main body is fixedly connected to the four corners of the bottom. The bolt moving grooves are fixedly connected to the two sides with the middle as the axis. The top of the inner wall of the main body is fixedly connected to the middle of the top. The bottom of the inner wall of the slider groove is slidably connected to the slider. The top of the slider is fixedly connected to the first fixing device. The middle of the main body is fixedly connected to the placement device. The top of the placement device is fixedly connected to the transmission device. The top of the transmission device is movably connected to the middle of the top, which can weld the connection between the ends of two steel bars.

[0004] The aforementioned rebar connection device for bridge and road construction has the advantage that the welding gun can be removed for manual welding; however, this rebar connection device still has some disadvantages, such as: large size, in the process of manufacturing some precast bridge pier segments, the rebar connection is vertically upward, the large size of the device makes it inconvenient to adjust the angle of the rebar connection, and the device is relatively bulky, reducing the flexibility of movement. The device is not convenient to adjust the clamping position according to the length of the rebar, making it inflexible in use and reducing the efficiency of rebar connection. Summary of the Invention

[0005] In view of the problems mentioned in the background art, the purpose of this invention is to provide a connection device for connecting steel bars between precast bridge pier segments, so as to solve the problems mentioned in the background art.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution:

[0007] A connection device for butt welding of reinforcing bars between precast bridge pier segments includes a hollow column, a base column inserted inside the hollow column, a base plate fixed to the lower end of the base column, a first telescopic rod fixed to the side surface of the hollow column, a first strip-shaped clamping seat fixed to the first telescopic rod, an adjusting column inserted into the base column, a movable seat fixed to the hollow column, a lead screw rotatably connected to the movable seat via a bearing, a threaded block threadedly connected to the lead screw, the threaded block being fixedly connected to the adjusting column, and a second telescopic rod fixed to one side, and a second strip-shaped clamping seat fixed to one side of the second telescopic rod.

[0008] Both the second strip-shaped clamping seat and the first strip-shaped clamping seat are fixed with fixing blocks. Both fixing blocks are threaded with rotating screws. The ends of both rotating screws are rotatably connected to clamping blocks through bearings. The two clamping blocks cooperate with the second strip-shaped clamping seat and the first strip-shaped clamping seat respectively.

[0009] By adopting the above technical solution, the bottom column, which is slidably connected at the bottom of the hollow column, can easily abut against the precast pier segment. This allows the first telescopic rod installed on one side of the hollow column to adjust the position of the first strip-shaped clamping seat, facilitating its engagement with the reinforcing bars to be joined. When the fixing block on the first strip-shaped clamping seat is threadedly connected to the rotating screw, it can drive one of the clamping blocks to move horizontally, firmly clamping the reinforcing bars to be joined onto the first strip-shaped clamping seat, thus improving the stability of the first strip-shaped clamping seat. The threaded rod connected to the hollow column can drive the threaded block to move. When the threaded block is fixedly connected to the adjusting column, it improves the stability of the vertical movement of the threaded block, facilitating the engagement of the first... The working height of the second strip-shaped clamping seat fixed on the two telescopic rods can be adjusted according to the length of the rebars being joined. Through the cooperation of another rotating screw and clamping block, the rebars can be firmly fixed. Rotating the screw drives the threaded block to move vertically, so that the two rebars being joined can fit together firmly, facilitating welding and improving the efficiency and quality of rebar joining. The device is small in size, light in weight, easy to move and flexible in use. The connection angle of the device can be flexibly adjusted according to the direction of rebar joining, which can firmly fix the two rebars being joined and fit them together, facilitating welding and greatly improving the production efficiency of precast bridge pier segments.

[0010] Preferably, the hollow column is threaded with two threaded segments, one of which abuts against the surface of the bottom column and the other of which abuts against the surface of the adjusting column, and the ends of both threaded segments are fixed with a first rotating wheel.

[0011] By adopting the above technical solution, the first rotating wheel fixed on the two threaded sections can easily drive the two threaded sections to rotate on the hollow column, thereby fixing the bottom column and the adjusting column.

[0012] Preferably, a limiting groove is formed on the hollow column, and a limiting post is threadedly connected to the surface of the bottom column, with the limiting post slidably connected within the limiting groove.

[0013] By adopting the above technical solution, the limiting post is slidably connected in the limiting groove, which can prevent the bottom post from detaching from the hollow post.

[0014] Preferably, the first telescopic rod and the second telescopic rod have the same structure. The first telescopic rod includes a first hollow rod, an adjusting rod and a locking screw. The first hollow rod is fixed to the side surface of the hollow column and is slidably connected to the adjusting rod. The end of the adjusting rod is fixed to the side surface of the first strip-shaped clamping seat. The locking screw is threaded onto the hollow column and abuts against the adjusting rod.

[0015] By adopting the above technical solution, the adjusting rod slides inside the first hollow rod, which facilitates the adjustment of the working positions of the first strip clamp and the second strip clamp, making it easier for the two butt-jointed steel bars to fit together and improving the welding accuracy.

[0016] Preferably, a rubber pad is fixed on the lower surface of the base plate, and a first anti-slip groove is formed on the surface of the rubber pad.

[0017] By adopting the above technical solution, the first anti-slip groove on the rubber pad can increase the friction of the rubber pad, which greatly improves the stability of the device when the base plate contacts the ground.

[0018] Preferably, a bearing seat is fixed on one side of the movable seat, and a second rotating wheel is rotatably connected to the bearing seat via a bearing. Both the end of the second rotating wheel and the end of the lead screw are fixed with helical gears, and the two helical gears mesh with each other.

[0019] By adopting the above technical solution, the second rotating wheel rotates on the bearing seat, and the second rotating wheel drives one of the helical gears to rotate. The other helical gear is fixedly connected to the end of the lead screw, and when it meshes with one of the helical gears, it can drive the lead screw to rotate, which facilitates the adjustment of the working height of the second strip clamping seat.

[0020] Preferably, both the second strip clamping seat and the first strip clamping seat are provided with V-shaped clamping grooves, and the clamping block is provided with a second anti-slip groove.

[0021] By adopting the above technical solution, the V-shaped clamping groove facilitates the clamping of steel bars of different diameters, thereby improving the applicability of the clamping. The second anti-slip groove on the clamping block can increase the contact friction with the steel bar and improve the stability of the clamping.

[0022] Preferably, guide plates are fixed on both sides of the second strip clamping seat and the first strip clamping seat, and guide rods are slidably connected to the guide plates, with one end of the guide rods fixed to the back of the clamping block.

[0023] By adopting the above technical solution, when the guide plate and guide rod are slidably connected, the smoothness of the horizontal movement of the clamping block can be improved.

[0024] Preferably, the end of the guide rod is threadedly connected to a limit knob.

[0025] By adopting the above technical solution, the travel of the guide rod can be limited by connecting the limit knob to the guide rod via a threaded connection.

[0026] Preferably, two symmetrical triangular ribs are fixed between the first hollow rod and the hollow column.

[0027] By adopting the above technical solution, the triangular rib plate helps to improve the structural strength between the first hollow rod and the hollow column.

[0028] In summary, the present invention has the following main beneficial effects:

[0029] Firstly, in this connection device for butt welding of reinforcing bars between precast bridge pier segments, the bottom column, which is slidably connected at the bottom of the hollow column, can easily abut against the precast bridge pier segment. This allows the first telescopic rod installed on one side of the hollow column to adjust the position of the first strip clamping seat, making it easy to clamp onto the reinforcing bars to be butt welded. When the fixing block on the first strip clamping seat is threadedly connected to the rotating screw, it can drive one of the clamping blocks to move horizontally, firmly clamping the reinforcing bars to be butt welded onto the first strip clamping seat, thus improving the stability of the first strip clamping seat. The threaded rod connected to the hollow column can drive the threaded block to move. When the threaded block is fixedly connected to the adjusting column, it improves the stability of the vertical movement of the threaded block and facilitates the adjustment of the working height of the second strip clamping seat fixed on the second telescopic rod. The clamping position can be adjusted according to the length of the butt welded reinforcing bars. Through the cooperation of another rotating screw and the clamping block, the reinforcing bars can be firmly fixed. Rotating the screw drives the threaded block to move vertically, so that the two butt welded reinforcing bars can be firmly attached, facilitating welding and improving the efficiency and quality of reinforcing bar butt welding.

[0030] Secondly, the connecting device used for butt welding of steel bars between precast bridge pier segments is small in size, lightweight, easy to move and flexible in use. The connection angle of the device can be flexibly adjusted according to the direction of steel bar butt welding, which can firmly fix the two butt welded steel bars and make them fit together, which is convenient for welding and greatly improves the production efficiency of precast bridge pier segments. Attached Figure Description

[0031] Figure 1This is one of the structural schematic diagrams of the present invention;

[0032] Figure 2 This is the second structural schematic diagram of the present invention;

[0033] Figure 3 This is the third structural schematic diagram of the present invention;

[0034] Figure 4 This is a cross-sectional view of the structure of the present invention.

[0035] Reference numerals: 1. Hollow column; 2. Base column; 3. Base plate; 4. First telescopic rod; 41. First hollow rod; 42. Adjusting rod; 43. Locking screw; 5. First strip-shaped clamping seat; 6. Adjusting column; 7. Moving seat; 8. Lead screw; 9. Threaded block; 10. Second telescopic rod; 11. Second strip-shaped clamping seat; 12. Fixing block; 13. Rotating screw; 14. Clamping block; 15. Threaded section; 16. First rotating wheel; 17. Limiting groove; 18. Limiting column; 19. Rubber pad; 20. First anti-slip groove; 21. Bearing seat; 22. Second rotating wheel; 23. Helical gear; 24. V-shaped clamping groove; 25. Second anti-slip groove; 26. Guide plate; 27. Guide rod; 28. Limiting knob; 29. ​​Triangular rib plate. Detailed Implementation

[0036] 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.

[0037] refer to Figures 1-4A connection device for butt welding of reinforcing bars between precast bridge pier segments includes a hollow column 1, a base column 2 inserted inside the hollow column 1, a base plate 3 fixed to the lower end of the base column 2, a first telescopic rod 4 fixed to the side surface of the hollow column 1, a first strip clamping seat 5 fixed to the first telescopic rod 4, an adjusting column 6 inserted into the base column 2, a movable seat 7 fixed to the hollow column 1, a lead screw 8 rotatably connected to the movable seat 7 via a bearing, a threaded block 9 threadedly connected to the lead screw 8, the threaded block 9 being fixedly connected to the adjusting column 6, and a second telescopic rod 10 fixed to one side, a second strip clamping seat 11 fixed to one side of the second telescopic rod 10. The telescopic rod 4 has the same structure as the second telescopic rod 10. The first telescopic rod 4 includes a first hollow rod 41, an adjusting rod 42, and a locking screw 43. The first hollow rod 41 is fixed on the side surface of the hollow column 1 and is slidably connected to the adjusting rod 42. The end of the adjusting rod 42 is fixed on the side surface of the first strip clamp 5. The locking screw 43 is threaded onto the hollow column 1 and abuts against the adjusting rod 42. The adjusting rod 42 slides inside the first hollow rod 41, which facilitates the adjustment of the working position of the first strip clamp 5 and the second strip clamp 11, so that the two butt-jointed steel bars can fit together and improve the welding accuracy.

[0038] Both the second strip clamping seat 11 and the first strip clamping seat 5 are fixed with fixing blocks 12. Both fixing blocks 12 are threaded with rotating screws 13. The ends of the two rotating screws 13 are rotatably connected to clamping blocks 14 through bearings. The two clamping blocks 14 cooperate with the second strip clamping seat 11 and the first strip clamping seat 5 respectively.

[0039] In use, the bottom column 2, which is slidably connected to the bottom of the hollow column 1, can easily abut against the precast pier segment. This allows the first telescopic rod 4 installed on one side of the hollow column 1 to adjust the position of the first strip clamping seat 5 and engage it with the steel bar to be joined. When the fixing block 12 on the first strip clamping seat 5 is threadedly connected to the rotating screw 13, it can drive one of the clamping blocks 14 to move horizontally, firmly clamping the steel bar to be joined onto the first strip clamping seat 5, thus improving the stability of the first strip clamping seat 5. The threaded screw 8 on the hollow column 1 can drive the threaded block 9 to move. When the threaded block 9 is fixedly connected to the adjusting column 6, it improves the stability of the vertical movement of the threaded block 9. The working height of the second strip clamping seat 11 fixed on the second telescopic rod 10 can be adjusted, and the clamping position can be adjusted according to the length of the steel bar to be joined. Through the cooperation of another rotating screw 13 and the clamping block 14, the steel bar can be firmly fixed. Rotating the screw 8 drives the threaded block 9 to move vertically, so that the two steel bars to be joined can be firmly attached for welding.

[0040] refer to Figures 1-4Two threaded sections 15 are threadedly connected to the hollow column 1. One threaded section 15 abuts against the surface of the bottom column 2, and the other threaded section 15 abuts against the surface of the adjusting column 6. The ends of the two threaded sections 15 are fixed with first rotating wheels 16. The first rotating wheels 16 fixed on the two threaded sections 15 can easily drive the two threaded sections 15 to rotate on the hollow column 1, which can fix the bottom column 2 and the adjusting column 6.

[0041] refer to Figures 1-4 A limiting groove 17 is provided on the hollow column 1, and a limiting column 18 is threadedly connected to the surface of the bottom column 2. The limiting column 18 is slidably connected in the limiting groove 17, which can prevent the bottom column 2 from detaching from the hollow column 1.

[0042] refer to Figures 1-4 A rubber pad 19 is fixed on the lower surface of the base plate 3. A first anti-slip groove 20 is provided on the surface of the rubber pad 19. The first anti-slip groove 20 on the rubber pad 19 can increase the friction of the rubber pad 19, so that when the base plate 3 contacts the ground, the stability of the device is greatly improved.

[0043] refer to Figures 1-4 A bearing seat 21 is fixed on one side of the movable seat 7. The bearing seat 21 is rotatably connected to a second rotating wheel 22 via a bearing. Both the end of the second rotating wheel 22 and the end of the lead screw 8 are fixed with helical gears 23. The two helical gears 23 mesh with each other. The second rotating wheel 22 rotates on the bearing seat 21 and drives one of the helical gears 23 to rotate. The other helical gear 23 is fixedly connected to the end of the lead screw 8 and can drive the lead screw 8 to rotate when it meshes with one of the helical gears 23, which facilitates the adjustment of the working height of the second strip clamping seat 11.

[0044] refer to Figures 1-4 Both the second strip clamping seat 11 and the first strip clamping seat 5 are provided with V-shaped clamping grooves 24, and the clamping block 14 is provided with a second anti-slip groove 25. The V-shaped clamping groove 24 facilitates the clamping of steel bars of different diameters, thereby improving the applicability of the clamping. The second anti-slip groove 25 on the clamping block 14 can increase the contact friction with the steel bars and improve the stability of the clamping.

[0045] refer to Figures 1-4 The second strip clamping seat 11 and the first strip clamping seat 5 are both fixed with guide plates 26. Guide rods 27 are slidably connected to the guide plates 26. One end of the guide rods 27 is fixed to the back of the clamping block 14. When the guide plates 26 and the guide rods 27 are slidably connected, the stability of the horizontal movement of the clamping block 14 can be improved.

[0046] refer to Figures 1-4The end of the guide rod 27 is threadedly connected to a limit knob 28, which limits the travel of the guide rod 27.

[0047] refer to Figures 1-4 Two symmetrical triangular ribs 29 are fixed between the first hollow rod 41 and the hollow column 1. The triangular ribs 29 help to improve the structural strength between the first hollow rod 41 and the hollow column 1.

[0048] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A connection device for butt welding of reinforcing bars between precast bridge pier segments, comprising a hollow column (1), characterized in that: A bottom column (2) is inserted inside the hollow column (1). A base plate (3) is fixed to the lower end of the bottom column (2). A first telescopic rod (4) is fixed to the side surface of the hollow column (1). A first strip clamping seat (5) is fixed to the first telescopic rod (4). An adjusting column (6) is inserted into the bottom column (2). A movable seat (7) is fixed to the hollow column (1). A lead screw (8) is rotatably connected to the movable seat (7) through a bearing. A threaded block (9) is threaded onto the lead screw (8). The threaded block (9) is fixedly connected to the adjusting column (6) and a second telescopic rod (10) is fixed to one side. A second strip clamping seat (11) is fixed to one side of the second telescopic rod (10). Both the second strip clamping seat (11) and the first strip clamping seat (5) are fixed with fixing blocks (12), and both fixing blocks (12) are threaded with rotating screws (13). The ends of both rotating screws (13) are rotatably connected with clamping blocks (14) through bearings. The two clamping blocks (14) cooperate with the second strip clamping seat (11) and the first strip clamping seat (5) respectively. Two threaded sections (15) are threadedly connected to the hollow column (1). One of the threaded sections (15) abuts against the surface of the bottom column (2), and the other threaded section (15) abuts against the surface of the adjusting column (6). The ends of the two threaded sections (15) are fixed with a first rotating wheel (16). A limiting groove (17) is provided on the hollow column (1), and a limiting column (18) is threadedly connected to the surface of the bottom column (2). The limiting column (18) is slidably connected in the limiting groove (17). The first telescopic rod (4) has the same structure as the second telescopic rod (10). The first telescopic rod (4) includes a first hollow rod (41), an adjusting rod (42) and a locking screw (43). The first hollow rod (41) is fixed on the side surface of the hollow column (1) and is slidably connected to the adjusting rod (42). The end of the adjusting rod (42) is fixed on the side surface of the first strip clamp (5). The locking screw (43) is threaded on the hollow column (1) and abuts against the adjusting rod (42).

2. The connection device for butt welding of reinforcing bars between precast bridge pier segments according to claim 1, characterized in that: A rubber pad (19) is fixed on the lower surface of the base plate (3), and a first anti-slip groove (20) is provided on the surface of the rubber pad (19).

3. The connection device for butt welding of reinforcing bars between precast bridge pier segments according to claim 1, characterized in that: A bearing seat (21) is fixed on one side of the movable seat (7). The bearing seat (21) is rotatably connected to a second rotating wheel (22) via a bearing. Both the end of the second rotating wheel (22) and the end of the lead screw (8) are fixed with helical gears (23), and the two helical gears (23) mesh with each other.

4. A connection device for butt welding of reinforcing bars between precast bridge pier segments according to claim 1, characterized in that: Both the second strip clamping seat (11) and the first strip clamping seat (5) are provided with V-shaped clamping grooves (24), and the clamping block (14) is provided with a second anti-slip groove (25).

5. A connection device for butt welding of reinforcing bars between precast bridge pier segments according to claim 1, characterized in that: The second strip clamping seat (11) and the first strip clamping seat (5) are both fixed with guide plates (26), and guide rods (27) are slidably connected on the guide plates (26). One end of the guide rods (27) is fixed on the back of the clamping block (14).

6. A connection device for butt welding of reinforcing bars between precast bridge pier segments according to claim 5, characterized in that: The end of the guide rod (27) is threadedly connected to a limit knob (28).

7. A connection device for butt welding of reinforcing bars between precast bridge pier segments according to claim 1, characterized in that: Two symmetrical triangular ribs (29) are fixed between the first hollow rod (41) and the hollow column (1).

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