Transverse bar bending device and shield segment single net forming machine

Abstract

The utility model belongs to the technical field of shield segment machining, and discloses a transverse bar bending device and a shield segment single net forming machine, and the transverse bar bending device comprises a supporting assembly, a bending assembly and a clamping assembly; the lifting assembly comprises a jacking driving piece and a supporting piece, the supporting piece is used for supporting the main reinforcement and the straight reinforcement welded to the main reinforcement, and the jacking driving piece is configured to drive the supporting piece to ascend and descend; the bending assembly is arranged above the supporting assembly, and the bending assembly is configured to bend the two ends of the straight steel bar downwards to form transverse bars; and the clamping assembly is arranged above the supporting assembly, and the clamping assembly is configured to be matched with the supporting assembly to vertically clamp and position the main reinforcement. According to the transverse rib bending device, the main rib can be vertically clamped and positioned when the transverse rib is bent and formed, and the forming quality of a single net is improved.

Description

Technical Field

[0001] This utility model relates to the field of shield tunnel segment processing technology, and in particular to a transverse rib bending device and a shield tunnel segment single-piece mesh forming machine. Background Technology

[0002] During tunnel construction, after the tunnel boring machine (TBM) excavates a circular hole, multiple arc-shaped shield segments are needed to fix the hole in place, providing a solid and safe space for subsequent construction. A shield segment is an arc-shaped shield segment of varying sizes formed by combining a shield segment reinforcement cage with concrete anchorage. The shield segment reinforcement cage consists of multiple arc-shaped single-layer meshes and multiple stirrups. The single-layer meshes are spaced apart and parallel to each other, and the stirrups are welded and fixed to the outer edges of the single-layer meshes, also spaced apart and parallel to each other.

[0003] like Figure 6 As shown, a single-piece mesh includes main reinforcement and transverse reinforcement, with the main reinforcement further divided into bottom reinforcement and top reinforcement. In related technologies, single-piece mesh processing devices first weld straight steel bars used to create transverse reinforcement to the main reinforcement, then bend both ends of the straight steel bars to form transverse reinforcement, reducing the difficulty of lapping the transverse reinforcement onto the main reinforcement. However, during the bending process, the main reinforcement and bottom reinforcement are suspended, resulting in inaccurate vertical positioning of the main reinforcement. This can easily cause the main reinforcement to shift downwards, leading to insufficient bending angle of the transverse reinforcement or torsion of the main reinforcement, ultimately causing the weld between the transverse reinforcement and the main reinforcement to break, thus affecting the forming quality of the single-piece mesh. Utility Model Content

[0004] The purpose of this utility model is to provide a transverse rib bending device and a shield tunnel segment single-piece mesh forming machine to solve the problem of inaccurate vertical positioning of the main ribs and transverse ribs.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A transverse reinforcement bending device includes a lifting assembly, a bending assembly, and a clamping assembly. The lifting assembly includes a lifting drive and a support. The support is used to support the main reinforcement and straight steel bars welded to the main reinforcement. The lifting drive is configured to drive the support to move up and down. The bending assembly is located above the lifting assembly and is configured to bend both ends of the straight steel bars welded to the main reinforcement downward to form transverse reinforcements. The clamping assembly is located above the lifting assembly and is configured to cooperate with the lifting assembly to clamp and position the main reinforcement from above and below.

[0007] Optionally, the support member is a bearing.

[0008] Optionally, the clamping assembly includes a clamping member, on which two downward-facing clamping grooves are provided at intervals, the two clamping grooves being used to clamp the bottom rib and the top rib in the main rib respectively.

[0009] Optionally, the width of the clamping groove gradually decreases from the groove opening direction to the groove bottom direction.

[0010] Optionally, the bending assembly includes a mounting base, a bending drive, and two bending arms. Each of the two bending arms is pivotally connected to the mounting base via a pivot shaft. The two bending drive members are connected to the two bending arms in a one-to-one correspondence to drive the bending arms to rotate, thereby bending the two ends of the straight steel bar.

[0011] Optionally, the bending assembly further includes a lifting drive connected to the mounting base for driving the mounting base to move up and down.

[0012] Optionally, the clamping assembly is disposed on the mounting base.

[0013] Optionally, the height of the clamping assembly on the mounting base is adjustable.

[0014] Optionally, the transverse rib bending device further includes a column and a traveling drive component, wherein the bending assembly is movably disposed on the column along the extension direction of the main rib, and the traveling drive component is configured to drive the bending assembly to move along the extension direction of the main rib.

[0015] The shield tunnel segment single-piece mesh forming machine includes a first welding device and any of the above-mentioned transverse bar bending devices. The first welding device is used to weld the straight steel bars to the main bars, and the transverse bar bending device is located downstream of the first welding device.

[0016] The beneficial effects of this utility model are as follows: When bending the straight steel bars welded to the main reinforcement to form the transverse reinforcement, the lifting component and the clamping component are used to position the main reinforcement vertically, ensuring the bending angle when forming the transverse reinforcement. Moreover, the weld between the straight steel bar and the main reinforcement is not easy to break, thus improving the quality of the single mesh. Attached Figure Description

[0017] Figure 1 This is a front view of the transverse rib bending device in an embodiment of this utility model;

[0018] Figure 2 This is a side view of the transverse rib bending device in an embodiment of this utility model;

[0019] Figure 3 This is a schematic diagram of the supporting component in an embodiment of this utility model;

[0020] Figure 4 This is a schematic diagram of the clamping component in an embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the structure of the shield tunnel segment single-piece mesh forming machine in this embodiment of the utility model;

[0022] Figure 6 This is a schematic diagram of a single-chip mesh.

[0023] In the picture:

[0024] 1. Horizontal rib bending device; 11. Lifting assembly; 111. Lifting drive component; 112. Support component; 12. Clamping assembly; 121. Clamping component; 1211. Clamping groove; 122. Screw; 13. Bending assembly; 131. Mounting base; 132. Bending drive component; 133. Bending arm; 1331. Central shaft; 1332. Bending shaft; 1333. Clearance groove; 1334. Body; 134. Pivot shaft; 135. Adapter; 136. Mounting bracket; 137. Guide rod; 138. Guide sleeve; 139. Lifting drive component; 14. Column; 15. Traveling drive component; 16. Gear; 17. Rack;

[0025] 2. Conveyor line; 3. Bending device; 4. Straightening device; 5. First bending device; 6. Second welding device; 7. Traction device; 8. Clamping device; 9. Pushing device; 10. Second bending device; 20. Third welding device; 30. First welding device; 40. Main frame; 50. Gripping device;

[0026] 100. Single mesh; 110. Main reinforcement; 110a. Bottom reinforcement; 110b. Top reinforcement; 120. Horizontal reinforcement. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0028] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0031] like Figures 1 to 4 As shown, this embodiment proposes a transverse reinforcement bending device 1, including a bending component 13, a lifting component 11, and a clamping component 12. The lifting component 11 includes a lifting drive component 111 and a support component 112. The support component 112 is disposed at the output end of the lifting drive component 111 and is used to lift and lower under the action of the lifting drive component 111, thereby lifting the main reinforcement 110 and the straight steel bars welded to the main reinforcement 110 radially. The bending component 13 and the clamping component 12 are both located above the lifting component 11. The bending component 13 is used to bend the straight steel bars welded to the main reinforcement 110 to form transverse reinforcement 120, while the clamping component 12 is used to cooperate with the lifting component 11 to clamp and position the main reinforcement 110 from top to bottom.

[0032] The aforementioned transverse bar bending device 1 can lift the straight bar and the main bar 110 before the bending component 13 bends the straight bar into a transverse bar 120, and cooperate with the clamping component 12 to clamp and position the main bar 110, ensuring the bending angle of the transverse bar 120 and reducing the possibility of weld breakage between the transverse bar 120 and the main bar 110.

[0033] refer to Figure 1 and Figure 3As shown, in this embodiment, the support member 112 adopts a support shaft, which is parallel to the straight steel bar used to make the transverse reinforcement 120, and the length of the support shaft is longer than the width of the single mesh 100. The lifting drive member 111 adopts a lifting cylinder, and two lifting cylinders are spaced apart at both ends of the length of the support shaft to drive the two ends of the support shaft to lift and lower synchronously, reducing the possibility that the bottom reinforcement 110a and the top reinforcement 110b constituting the main reinforcement 110 have different heights, and further improving the bending quality of the transverse reinforcement 120.

[0034] refer to Figure 2 and Figure 4 As shown, the clamping assembly 12 includes a clamping member 121, which has two downward-facing clamping grooves 1211. The two clamping grooves 1211 are used to clamp the bottom rib 110a and the top rib 110b, respectively. That is, the distance between the two clamping grooves 1211 is equal to the distance between the bottom rib 110a and the top rib 110b.

[0035] Specifically, the clamping groove 1211 is configured as a tapered groove with a width that gradually decreases from the groove opening to the groove bottom, so as to reduce the difficulty of the main reinforcement 110 entering the clamping groove 1211, and at the same time, it can accommodate main reinforcement 110 of different diameters.

[0036] refer to Figure 1 As shown, the bending assembly 13 includes a mounting base 131, a bending drive 132, and a bending arm 133. There are two bending arms 133, each symmetrically mounted on the mounting base 131 via a pivot shaft 134. The two bending drive members 132 are connected to the two bending arms 133 in a one-to-one correspondence, and are used to drive the bending arms 133 to rotate around the pivot shaft 134, thereby simultaneously bending both ends of the straight steel bar.

[0037] Specifically, the bending arm 133 includes a body 1334, a central shaft 1331, and a bending shaft 1332. The central shaft 1331 and the bending shaft 1332 are arranged parallel to each other on the body 1334. The body 1334 is pivotally connected to the mounting base 131 via the aforementioned pivot shaft 134. Both the central shaft 1331 and the bending shaft 1332 are cylindrical, and a clearance groove 1333 is provided on the body 1334 between the central shaft 1331 and the bending shaft 1332. The central shaft 1331 and the pivot shaft 134 are coaxially arranged. Initially, both the central shaft 1331 and the bending shaft 1332 abut against the straight steel bar. Under the action of the bending drive 132, the bending shaft 1332 rotates downward about the central shaft 1331 to apply a downward bending force to the straight steel bar. The end of the straight steel bar rotates and bends around the nearest main shaft to form the desired hook shape. It is understandable that the bend formed during the bending of the straight steel bar and the main reinforcement 110 can be embedded in the relief groove 1333 to prevent the bending arm 133 from interfering with the bending of the straight steel bar.

[0038] In this embodiment, to avoid interference between the bending arm 133 and the mounting base 131 during rotation, a transition seat 135 is provided protruding from the bottom of the mounting base 131, and a pivot shaft 134 is disposed on the transition seat 135. The bending drive 132 adopts a bending cylinder. The fixed end of the bending cylinder is pivotally connected to the mounting base 131 through a bending cylinder seat, and the piston end is pivotally connected to the end of the bending arm 133 away from the central axis 1331, thereby extending the lever arm, making bending more effortless, and reducing the operating cost of the bending cylinder.

[0039] Furthermore, the bending assembly 13 also includes a lifting drive 139, which is connected to the mounting base 131 and is used to drive the mounting base 131 to move up and down, thereby preventing the bending arm 133 from interfering with the movement of the monolithic mesh 100. In this embodiment, the lifting drive 139 is a lifting cylinder, one end of which is connected to the mounting base 131, and the other end is mounted on the mounting frame 136 through a lifting cylinder seat.

[0040] Specifically, two lifting cylinders are spaced apart along the length of the mounting base 131, and the length of the mounting base 131 is consistent with the extension direction of the straight steel bars used to make the transverse reinforcing bars 120. In addition, the bending assembly 13 also includes a guide sleeve 138 and a guide rod 137. The guide sleeve 138 is fixed on the mounting bracket 136, and the guide rod 137 passes vertically through the guide sleeve 138 and is connected to the mounting base 131 to provide guidance for the lifting direction of the lifting cylinders.

[0041] To prevent the clamping assembly 12 from interfering with the movement of the single-piece mesh 100, the clamping assembly 12 is mounted on the mounting base 131 so that it can rise and fall together with the bending arm 133 under the action of the lifting drive component 139. At the same time, in order to adjust the clamping force of the clamping groove 1211 on the main rib 110, the height of the clamping component 121 on the mounting base 131 is adjustable. For example, the clamping assembly 12 also includes a screw 122. The clamping component 121 is mounted on the mounting base 131 by the screw 122. By turning the screw 122, the height of the clamping component 121 on the mounting base 131 can be adjusted. In order to facilitate the fixing of the screw 122, the clamping component 121 is designed as an L-shape, with its horizontal end connected to the screw 122 and the vertical end having a clamping groove 1211.

[0042] Since there are multiple horizontal ribs 120 distributed on the single mesh 100, in order to better bend the horizontal ribs 120 at different positions, the horizontal rib bending device 1 also includes a column 14 and a traveling drive component 15. The mounting frame 136 is movably arranged on the column 14 along the extension direction of the main rib 110, and the traveling drive component 15 is configured to drive the mounting frame 136 to move along the extension direction of the main rib 110.

[0043] In this embodiment, the walking drive component 15 is a motor, and the output end of the motor is provided with a gear 16. The gear 16 meshes with a rack 17 provided on the column 14, thereby realizing the movement of the bending component 13 through the transmission between the gear 16 and the rack 17. It can be understood that since the main rib 110 is arc-shaped, the rack 17 is also arc-shaped.

[0044] like Figure 5 As shown, this embodiment also provides a shield tunnel segment single-piece mesh forming machine, including a main frame, a conveyor line 2, a bending device 3, a straightening device 4, a first bending device 5, a second bending device 10, a third bending device, a first welding device 30, a second welding device 6, a third welding device 20, a traction device 7, a clamping device 8, an ejection device 9, and a gripping device 50. The conveyor line 2, the bending device 3, the straightening device 4, and the main frame are arranged sequentially. The main frame as a whole is arc-shaped with the arc of the single-piece mesh 100. The first bending device 5, the second bending device 10, the third bending device, the first welding device 30, the second welding device 20, the first welding device 6, the third welding device 7, the first welding device 8, the second welding device 9, the first welding device 10, the second welding device 10, the first welding device 9, the second welding device 10, the first welding device 10 ... The first bending device 5, the second bending device 6, the third bending device 20, the traction device 7, the clamping device 8, and the ejection device 9 are all mounted on the main frame. The first bending device 5 and the second bending device 10 are mounted at opposite ends of the main frame along the arc direction. The third bending device is mounted upstream of the first bending device 5. The third bending device adopts the aforementioned transverse rib bending device 1. The first welding device 30, the second welding device 6, and the third welding device 20 are mounted sequentially on the main frame 40. The first welding device 30 is located upstream of the third bending device. The second welding device 6 and the third welding device 20 correspond to the first bending device 5 and the second bending device 10, respectively.

[0045] Conveyor line 2 transports straight steel bars used to make main reinforcing bars 110 to bending device 3. Bending device 3 is used to press the straight steel bars into an arc and pull the pressed steel bars to straightening device 4. Straightening device 4 is used to straighten the arc of the pressed steel bars. First bending device 5 and second bending device 10 are used to bend both ends of the steel bars to form bottom reinforcing bars 110a. Clamping device 8 is used to clamp the bottom reinforcing bars 110a when they are bent to prevent them from shifting. The device 9 is used to push the top rib 110b so that the two ends of the bottom rib 110a overlap with the top rib 110b. The third bending device bends the two ends of the straight steel bar to form the transverse rib 120. The first welding device 30 is used to weld the main rib 110 to the unbent straight steel bar to form a semi-finished product. The second welding device 6 and the third welding device 20 are respectively used to weld the two ends of the bottom rib 110a to the top rib 110b. The gripping device 50 is used to transfer the formed single mesh 100 to the single mesh 100 storage area.

[0046] When using the aforementioned shield tunnel segment single-piece mesh forming machine to produce an arc-shaped single-piece mesh 100, two straight steel bars are first conveyed by the conveyor line 2 into the bending device 3 for arc pressing. After being pressed, the steel bars are straightened by the straightening device 4 and then enter the traction device 7. The first welding device 30 completes the welding of the first straight steel bar used to make the transverse reinforcement 120 to the main reinforcement 110. The traction device 7 pulls the semi-finished product to continue its arc-shaped movement to the second straight steel bar, while simultaneously moving the fixing frame directly above the first straight steel bar. At this point, the first welding device 30 completes the welding of the second straight steel bar. At the same time, the transverse reinforcement 120 bending device bends both ends of the first straight steel bar to form the transverse reinforcement 120. Similarly, after all the transverse reinforcements 120 are completed, The traction device 7 pulls the front end of the semi-finished product to the first bending device 5. At this time, the rear end of the semi-finished product is located at the second bending device 10. The first bending device 5 and the second bending device 10 are used to complete the bending of both ends of the bottom rib 110a. During the bending process, the clamping device 8 clamps the semi-finished product to prevent it from shifting. After the bottom rib 110a is bent and formed, the pushing device 9 pushes the top rib 110b so that the bent bottom rib 110a and top rib 110b overlap. The second welding device 6 and the third welding device 20 respectively weld the overlap points of the bottom rib 110a and top rib 110b. At this point, the single mesh 100 is formed. The gripping device 50 grips the single mesh 100 and transfers it to the single mesh 100 storage area.

[0047] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A transverse rib bending device, characterized in that, The transverse rib bending device includes: The lifting assembly (11) includes a lifting drive (111) and a support (112), the support (112) being used to support the main reinforcement (110) and the straight steel bars welded to the main reinforcement (110), the lifting drive (111) being configured to drive the support (112) to rise and fall; A bending assembly (13) is disposed above the supporting assembly (11), the bending assembly (13) being configured to bend the two ends of the straight steel bar welded to the main reinforcement (110) downward to form a transverse reinforcement (120); A clamping component (12) is disposed above the lifting component (11), and the clamping component (12) is configured to cooperate with the lifting component (11) to clamp and position the main rib (110) from above and below.

2. The transverse rib bending device according to claim 1, characterized in that, The support member (112) adopts a bearing.

3. The transverse rib bending device according to claim 1, characterized in that, The clamping assembly (12) includes a clamping member (121), on which two downward-facing clamping grooves (1211) are provided at intervals. The two clamping grooves (1211) are used to clamp the bottom rib (110a) and the top rib (110b) in the main rib (110).

4. The transverse rib bending device according to claim 3, characterized in that, The clamping groove (1211) has a gradually decreasing width from the groove opening to the groove bottom.

5. The transverse rib bending device according to claim 1, characterized in that, The bending assembly (13) includes a mounting base (131), a bending drive (132), and a bending arm (133). There are two bending arms (133), each of which is pivotally connected to the mounting base (131) via a pivot shaft (134). The two bending drive (132) are connected to the two bending arms (133) in a one-to-one correspondence to drive the bending arm (133) to rotate, thereby bending the two ends of the straight steel bar.

6. The transverse rib bending device according to claim 5, characterized in that, The bending assembly (13) further includes a lifting drive (139) connected to the mounting base (131) for driving the mounting base (131) to rise and fall.

7. The transverse rib bending device according to claim 6, characterized in that, The clamping assembly (12) is disposed on the mounting base (131).

8. The transverse rib bending device according to claim 7, characterized in that, The height of the clamping assembly (12) on the mounting base (131) is adjustable.

9. The transverse rib bending device according to any one of claims 1-8, characterized in that, The transverse rib bending device further includes a column (14) and a traveling drive (15). The bending assembly (13) is movably disposed on the column (14) along the extension direction of the main rib (110). The traveling drive (15) is configured to drive the bending assembly (13) to move along the extension direction of the main rib (110).

10. A shield tunnel segment single-piece mesh forming machine, characterized in that, Includes a first welding device (30) and a transverse bar bending device as described in any one of claims 1-9, wherein the first welding device (30) is used to weld the straight steel bar to the main bar (110), and the transverse bar bending device is disposed downstream of the first welding device (30).

Images