Automatic bending machine for tunnel steel plate waterstop

Abstract

The application discloses a tunnel steel plate water stop belt automatic bending machine and relates to the technical field of tunnel steel plate water stop belt production. The machine frame is provided with two lower roller shaft mechanisms symmetrically arranged in front and back, and the machine frame is provided with upper roller shaft mechanisms arranged in an isosceles triangle with the two lower roller shaft mechanisms. The upper roller shaft mechanisms and the lower roller shaft mechanisms are provided with supporting roller pressing mechanisms. The supporting member is accurately adjusted according to the bending angle of the steel plate section that has been subjected to bending treatment, and the bending of the steel plate section with different bending angles is actively controlled. The bending steel plate is limited together to form a continuous and accurate guide channel, which is beneficial to the center positioning of the steel plate during the bending process and avoids the problems of the twisting and warping of the steel plate. The bending part is dynamically supported and pressure-maintained, the material flow of the bending part is accurately controlled, the waste rate is reduced, and the water stopping effect of the final steel plate water stop belt product is ensured.

Description

Technical Field

[0001] This invention relates to the field of tunnel steel plate waterstop production technology, and in particular to an automatic bending machine for tunnel steel plate waterstops. Background Technology

[0002] Tunnel steel plate waterstops are waterproofing materials used at joints such as tunnel construction joints and expansion joints. They are typically made by directly processing steel plates into specific shapes, such as bends, in the form of "

" or "

[0003] Currently, the most common bending machine is the three-roll bending machine. It uses three ordinary circular rollers arranged in an isosceles triangle, driven by a motor to rotate. The steel plate segment, already bent, is subjected to continuous and uniform bending force as it passes between these rollers, forming a smooth arc. The curvature of the bending is controlled by adjusting the downward pressure of the upper roller. However, if the bent steel plate segment is not aligned with the ordinary circular rollers when fed into the bending machine, resulting in "misalignment," the processed waterstop steel plate will be twisted and warped. Secondly, the bent portion of the steel plate segment is subjected to bending pressure during the bending process; the lower side is stretched, making it prone to cracking, while the upper side is compressed, making it prone to wrinkling, reducing production quality. Furthermore, the current ordinary circular rollers are not suitable for providing stable and continuous support and pressure to the bent portion, thus affecting the final waterstop effect and waterproof performance of the finished steel plate waterstop.

[0004] Therefore, in order to accurately center the material feeding and processing and improve production quality, this invention provides an automatic bending machine for tunnel steel plate waterstops. Summary of the Invention

[0005] The purpose of this invention is to solve the problems existing in the prior art by proposing an automatic bending machine for tunnel steel plate waterstops.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an automatic bending machine for tunnel steel plate waterstops, comprising a frame, wherein two lower roller shaft mechanisms are symmetrically arranged front and rear on the frame, and an upper roller shaft mechanism is arranged on the frame in an isosceles triangle with the two lower roller shaft mechanisms.

[0007] Both the upper roller shaft mechanism and the lower roller shaft mechanism are provided with a support roller pressing mechanism, and the support roller pressing mechanism includes an installation component provided on the upper roller shaft mechanism and the lower roller shaft mechanism. The installation component is provided with a support roller pressing component and a stabilizing component. The installation component, the support roller pressing component and the stabilizing component are all provided with an annular rubber sleeve.

[0008] The upper roller mechanism and its corresponding support roller mechanism, and the lower roller mechanism and its corresponding support roller mechanism form guide channels from the upper and lower directions respectively, guiding the bent steel plate segment to center and position, and providing dynamic support and pressure holding for the bent part. The support roller assembly provides primary support for the annular rubber sleeve and the bent steel plate segment. The installation component supports the support roller assembly and adjusts the support angle and range of the support roller assembly according to the bending angle of the bent steel plate segment. The stabilization component assists the support roller assembly in providing secondary support for the annular rubber sleeve and the bent steel plate segment and locks the adjusted state of the support roller assembly.

[0009] In the aforementioned automatic bending machine for tunnel steel plate waterstops, the upper roller mechanism is driven to rotate counterclockwise by a drive mechanism installed on the left, and the lower roller mechanism is driven to rotate clockwise by a drive mechanism installed on the right. The bent steel plate segment is driven from back to front, and the upper roller mechanism is driven by a hydraulic mechanism installed on the frame to adjust the downward pressure.

[0010] In the aforementioned automatic bending machine for tunnel steel plate waterstops, the upper roller mechanism includes a central shaft 1 that is detachably installed with the drive mechanism 1, and a circular roller 1 is coaxially and fixedly connected to the middle of the central shaft 1. The lower roller mechanism includes a central shaft 2 that is detachably installed with the drive mechanism 2, and a circular roller 2 is coaxially and fixedly connected to the middle of the central shaft 2.

[0011] In the aforementioned automatic bending machine for tunnel steel plate waterstops, the mounting components include mounting rings. Mounting rings can be detachably mounted on the left and right side walls of the upper roller shaft mechanism's roller one and the lower roller shaft mechanism's roller two. The inner ring wall of the mounting ring is fixedly connected to an inner support ring by three connecting plates, and the inner support ring is sleeved and mounted on the outer wall of the corresponding central shaft one and central shaft two. Hydraulic rods are mounted on the side of the three connecting plates away from the corresponding roller one and roller two, and the output ends of the hydraulic rods are connected to a movable ring.

[0012] In the aforementioned automatic bending machine for tunnel steel plate waterstops, slide rail assemblies are symmetrically provided on the outer walls of central shaft one and central shaft two. Each slide rail assembly includes multiple slide rails distributed circumferentially. The movable ring is slidably connected to the corresponding slide rail assembly by a slider that is circumferentially fixed on the inner ring wall.

[0013] In the aforementioned automatic bending machine for tunnel steel plate waterstops, the support roller pressing assembly includes a hinge seat. Multiple hinge seats are circumferentially fixedly connected to the side of the mounting ring away from the corresponding roller one and roller two, and a support member is hinged on the hinge seat. The outer ring wall of the movable ring is hinged to the support member through a connector.

[0014] In the aforementioned automatic bending machine for tunnel steel plate waterstops, the stabilizing component includes a sliding ring. The mounting ring is a detachable hollow structure, and the sliding ring is connected to the inside of the mounting ring by an electric slider. Multiple wedges are detachably mounted on the side of the sliding ring away from the corresponding roller one and roller two via a connecting rod. A protrusion is fixedly connected to the side of the wedge away from the axis of the sliding ring.

[0015] In the aforementioned automatic bending machine for tunnel steel plate waterstops, wedges and support members are staggered, connecting rods slide left and right through the mounting ring, support members and protrusions jointly provide internal support for the annular rubber sleeve, and multiple locking members are connected to the side of the sliding ring away from the corresponding roller one and roller two via spring rods.

[0016] In the aforementioned automatic bending machine for tunnel steel plate waterstops, locking components and wedges are staggered, the locking components correspond to the hinge seats, and the locking components are slidably connected to the corresponding hinge seats from left to right. The support components include a shaft hinged to the hinge seats and arc-shaped plates connected to both ends of the shaft.

[0017] In the aforementioned automatic bending machine for tunnel steel plate waterstops, multiple toothed blocks are fixedly connected circumferentially to the outer wall of the middle part of the shaft. A locking member is fixedly connected to a toothed block that meshes with the toothed blocks on the side of the support member that is close to the locking member. The locking member is used to lock the state of the support member after adjustment.

[0018] Compared with existing technologies, the advantages of this invention are: 1. By cooperating with the installation components and the support roller pressing components, the extension and retraction of the hydraulic rods can accurately adjust the support components according to the bending angle of the steel plate segments that have been bent, thereby increasing the adaptability of the equipment and actively controlling the bending and forming operations of bent steel plate segments with different bending angles.

[0019] 2. Through the cooperation of the upper roller shaft mechanism, the lower roller shaft mechanism and the support roller pressing mechanism, the upper annular rubber sleeve and the upper roller shaft mechanism form the upper roller pressing module, and the lower annular rubber sleeve and the lower roller shaft mechanism form the lower roller pressing module. Together, they limit the bending of the steel plate and form a continuous and accurate guiding channel, which is conducive to the centering and positioning of the steel plate during the bending process. This fundamentally solves the problem of "feeding deviation" in feeding and guiding, and avoids the problems of twisting and warping of the steel plate.

[0020] 3. Through the cooperation of the support roller pressing assembly, stabilizing assembly, and annular rubber sleeve, the locking component locks the tilt angle of the support component, enhancing its support strength and stability. The wedge block supports two adjacent support components and, in conjunction with the support component, further supports the annular rubber sleeve. The upper support roller pressing mechanism suppresses compression and wrinkling on the upper side of the bent steel plate segment, while the lower support roller pressing mechanism prevents excessive stretching and cracking on the lower side of the bent steel plate segment. It provides dynamic support and pressure holding for the bent section, precisely controls the material flow in the bent section, reduces the scrap rate, and ensures the final water-stopping effect of the steel plate waterstop. Attached Figure Description

[0021] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein:

[0022] Figure 1 This is a schematic diagram of the overall structure.

[0023] Figure 2 This is a schematic diagram of the structure of a bent steel plate before bending.

[0024] Figure 3 This is a schematic diagram of the structure of a bent steel plate after bending.

[0025] Figure 4 This is a schematic diagram of the upper roller mechanism and the supporting roller pressing mechanism.

[0026] Figure 5 This is a schematic diagram of the support roller assembly corresponding to the upper roller mechanism.

[0027] Figure 6 This is a partial structural diagram of the installation components.

[0028] Figure 7 This is a schematic diagram of the stabilization component corresponding to the upper roller mechanism.

[0029] Figure 8 A schematic diagram of the structure after the support is locked by the locking element corresponding to the upper roller mechanism.

[0030] Figure 9 This is a schematic diagram of the lower roller mechanism and the support roller pressing mechanism.

[0031] Figure 10 This is a schematic diagram of the wedge block corresponding to the lower roller mechanism.

[0032] Figure 11 A schematic diagram of the structure after the support is locked by the locking element corresponding to the lower roller mechanism.

[0033] In the diagram: 1. Frame; 2. Upper roller mechanism; 3. Lower roller mechanism; 4. Support roller pressing mechanism; 41. Mounting assembly; 411. Mounting ring; 412. Inner support ring; 413. Hydraulic rod; 414. Movable ring; 415. Slide rail assembly; 42. Support roller pressing assembly; 421. Support component; 422. Connector; 423. Hinge seat; 43. Stabilizing assembly; 431. Sliding ring; 432. Wedge block; 433. Spring rod; 434. Locking component; 44. Annular rubber sleeve. Detailed Implementation

[0034] 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.

[0035] Reference Figures 1 to 4 An automatic bending machine for tunnel steel plate waterstops includes a frame 1. Two lower roller shaft mechanisms 3 are symmetrically arranged front and rear on the frame 1. An upper roller shaft mechanism 2 is arranged on the frame 1 in an isosceles triangle with the two lower roller shaft mechanisms 3. Both the upper roller shaft mechanism 2 and the lower roller shaft mechanism 3 are provided with a support roller pressing mechanism 4. The support roller pressing mechanism 4 includes an installation component 41 installed on the upper roller shaft mechanism 2 and the lower roller shaft mechanism 3. The installation component 41 is provided with a support roller pressing component 42 and a stabilizing component 43. The installation component 41, the support roller pressing component 42 and the stabilizing component 43 are all provided with an annular rubber sleeve 44.

[0036] Reference Figures 1 to 5 The upper roller shaft mechanism 2 is driven to rotate counterclockwise by the drive mechanism 1 installed on the left, and the lower roller shaft mechanism 3 is driven to rotate clockwise by the drive mechanism 2 installed on the right. The bending steel plate segment is driven from back to front. The upper roller shaft mechanism 2 is driven by a hydraulic mechanism (not shown in the figure) installed on the frame 1 to adjust the downward pressure. The upper roller shaft mechanism 2 includes a central shaft 1 that is detachably installed with the drive mechanism 1. A circular roller 1 is coaxially fixedly connected to the middle of the central shaft 1. The lower roller shaft mechanism 3 includes a central shaft 2 that is detachably installed with the drive mechanism 2. A circular roller 2 is coaxially fixedly connected to the middle of the central shaft 2.

[0037] The downward pressure of the upper roller mechanism 2 is adjusted by the hydraulic mechanism. After adjusting the support roller mechanism 4 to match the bending angle of the steel plate segment that has been bent, the drive mechanism one and drive mechanism two (drive mechanism one and drive mechanism two can be servo motors, which achieve closed-loop control through built-in encoders. The driver precisely controls the torque, speed and position of the motor, and then controls the rotation of the upper roller mechanism 2 and the lower roller mechanism 3) to drive the upper roller mechanism 2 to rotate counterclockwise and the lower roller mechanism 3 to rotate clockwise. The steel plate segment that has been bent is then continuously passed between the upper roller mechanism 2 and the lower roller mechanism 3. When the bent steel plate segment passes between the upper roller mechanism 2 and the lower roller mechanism 3, it is subjected to continuous and uniform bending force, thereby forming a smooth arc shape and completing the bending process. During the bending process of the steel plate segment, the support roller mechanism 4 continuously provides shape stability support for the bent part of the steel plate segment.

[0038] Reference Figures 4 to 6 The mounting assembly 41 includes mounting rings 411. Mounting rings 411 are detachably mounted on the left and right side walls of the first roller of the upper roller shaft mechanism 2 and the second roller of the lower roller shaft mechanism 3. The inner ring wall of the mounting ring 411 is fixedly connected to an inner support ring 412 by three connecting plates. The inner support ring 412 is sleeved and mounted on the outer wall of the corresponding central shaft one and central shaft two. Hydraulic rods 413 are mounted on the side of the three connecting plates away from the corresponding roller one and roller two. The output end of the hydraulic rods 413 is connected to a movable ring 414. The outer walls of the first and second central shafts are symmetrically provided with slide rail groups 415. The slide rail group 415 includes multiple slide rails distributed circumferentially. The movable ring 414 is slidably connected to the corresponding slide rail group 415 by a slider fixed circumferentially on the inner ring wall.

[0039] Reference Figures 4 to 5 The support roller pressing assembly 42 includes a hinge seat 423. A plurality of hinge seats 423 are circumferentially fixedly connected to the side of the mounting ring 411 away from the corresponding roller one and roller two. A support member 421 is hinged on the hinge seat 423. The outer ring wall of the movable ring 414 is hinged to the support member 421 through a connector 422.

[0040] Reference Figures 4 to 11The stabilizing component 43 includes a sliding ring 431. The mounting ring 411 is a detachable hollow structure. The sliding ring 431 is slidably connected to the inside of the mounting ring 411 via an electric slider. Multiple wedges 432 are detachably mounted circumferentially on the side of the sliding ring 431 away from the corresponding roller 1 and roller 2 via a connecting rod. A protrusion is fixedly connected to the side of the wedge 432 away from the axis of the sliding ring 431. The wedges 432 and the support member 421 are staggered. The connecting rod slides through the mounting ring 411. The support member 421 and the protrusion together provide internal support for the annular rubber sleeve 44. The sliding ring 431 is detachable from the corresponding roller 1 and roller 2 via a connecting rod. One side of roller 2 is connected to multiple locking elements 434 via spring rod 433; the locking elements 434 and wedge blocks 432 are staggered, and the locking elements 434 correspond to the hinge seats 423. The locking elements 434 are slidably connected to the interior of the corresponding hinge seats 423. The support member 421 includes a shaft hinged to the hinge seat 423 and arc-shaped plates connected to both ends of the shaft; multiple tooth blocks 1 are fixedly connected to the outer wall of the middle part of the shaft in a circumferential direction, and a tooth block 2 that meshes with the tooth blocks 1 is fixedly connected to the side of the locking element 434 that is close to the support member 421. The locking element 434 is used to lock the state of the support member 421 after adjustment.

[0041] The specific operation of adjusting the support roller pressing mechanism 4 to match the bending angle is as follows: the output end of the hydraulic rod 413 extends or retracts, driving the movable ring 414 to slide left and right on the slide rail group 415. The end of the connector 422 connected to the movable ring 414 and the end of the support 421 connected to it both rotate adaptively. The connector 422 pushes the support 421 to rotate adaptively around the hinge seat 423. Multiple circumferentially distributed support 421 expand away from each other or contract towards each other.

[0042] It should be noted that the mounting ring 411 is detachably fixed to the upper roller shaft mechanism 2 or the lower roller shaft mechanism 3, facilitating subsequent periodic maintenance. Multiple circumferentially distributed support members 421 corresponding to the upper roller shaft mechanism 2 collectively form a trumpet shape (e.g., Figure 4 As shown), when the output end of the hydraulic rod 413 corresponding to the upper roller mechanism 2 extends, it drives multiple circumferentially distributed support members 421 to move closer together and retract; when retracted, the multiple circumferentially distributed support members 421 move further apart and expand. The multiple circumferentially distributed support members 421 corresponding to the lower roller mechanism 3 together form a frustum shape (as shown). Figure 9 As shown), when the output end of the hydraulic rod 413 corresponding to the lower roller mechanism 3 extends, it drives multiple circumferentially distributed support members 421 to expand away from each other; when it retracts, the multiple circumferentially distributed support members 421 move closer to each other and contract.

[0043] It should be noted that the extension and retraction distance of the output end of the hydraulic rod 413 was obtained by those skilled in the art through multiple experiments, so as to make accurate adjustment of the support 421 according to the bending angle of the bent steel plate segment, thereby increasing the adaptability of the equipment and actively controlling the bending and forming operation of the bent steel plate segment with different bending angles.

[0044] The support member 421 corresponding to the upper roller shaft mechanism 2 supports the corresponding annular rubber sleeve 44, and the support member 421 corresponding to the lower roller shaft mechanism 3 supports the corresponding annular rubber sleeve 44. The upper annular rubber sleeve 44 and the upper roller shaft mechanism 2 form the upper roller pressing module, and the lower annular rubber sleeve 44 and the lower roller shaft mechanism 3 form the lower roller pressing module. The upper roller pressing module and the lower roller pressing module are adapted to the bending angle of the steel plate segment, and together limit the bending of the steel plate, forming a continuous and accurate guide channel (such as...). Figure 2 As shown in the figure, it is beneficial to center and position the steel plate during the bending process, fundamentally solving the problem of "feeding deviation" in feeding and guiding, and avoiding the problems of twisting and warping of the steel plate.

[0045] The wedge 432 cooperates with the support member 421 to further strengthen the support of the annular rubber sleeve 44. At the same time, the locking member 434 locks the tilt angle of the support member 421, strengthening the support strength and stability of the support member 421. The specific operation is as follows: the electric slider drives the sliding ring 431 to slide left and right inside the corresponding mounting ring 411. The sliding ring 431 drives the corresponding wedge 432, spring rod 433 and locking member 434 to move. The wedge 432 moves between two adjacent support members 421 until the wedge 432 is close to the support member 421, supporting the support member 421. At the same time, the protrusion on the wedge 432 is close to the inner wall of the annular rubber sleeve 44, further supporting the annular rubber sleeve 44 between two adjacent support members 421.

[0046] It should be noted that the distance that the electric slider drives the sliding ring 431 to move is determined by those skilled in the art through multiple experiments, which facilitates accurate adjustment of the wedge block 432.

[0047] The sliding ring 431 corresponding to the upper roller shaft mechanism 2 drives the wedge block 432 to move closer to the upper roller shaft mechanism 2, so that the protrusion on the wedge block 432 is pressed against the inner wall of the annular rubber sleeve 44. The spring rod 433 first drives the locking member 434 to move closer to the shaft of the corresponding support member 421. The second tooth on the locking member 434 meshes with the first tooth on the shaft (e.g., Figure 8 As shown), the tilt state of the support 421 is thus locked, and if the sliding ring 431 continues to move, the spring rod 433 will be adaptively stretched.

[0048] The sliding ring 431 corresponding to the lower roller shaft mechanism 3 drives the wedge block 432 to move away from the lower roller shaft mechanism 3, so that the protrusion on the wedge block 432 is pressed against the inner wall of the annular rubber sleeve 44. The spring rod 433 first drives the locking member 434 to move closer to the shaft of the corresponding support member 421. The second tooth on the locking member 434 meshes with the first tooth on the shaft (e.g., Figure 9 As shown), the tilt state of the support 421 is thus locked, and if the sliding ring 431 continues to move, the spring rod 433 will undergo adaptive compression.

[0049] It should be noted that the locking member 434 corresponding to the upper roller shaft mechanism 2 is U-shaped, and the locking member 434 corresponding to the lower roller shaft mechanism 3 is M-shaped. The two locking members 434 corresponding to the upper roller shaft mechanism 2 and the lower roller shaft mechanism 3 have the same function but different shapes, so as to adapt to the moving direction of the sliding ring 431 and the wedge block 432 and lock the tilt state of the support member 421.

[0050] It should be noted that the target of this invention is tunnel steel plate waterstop, and there is no high precision requirement for the surface condition of the steel plate waterstop. It is only necessary to achieve the specified curvature. Therefore, the small gap between the support member 421 and the wedge block 432 that causes indentations on the surface of the steel plate waterstop can be ignored.

[0051] During the bending process of the bent steel plate segment, it is subjected to continuous and uniform bending force when passing between the upper roller mechanism 2 and the lower roller mechanism 3. The upper support roller mechanism 4 inhibits the upper side of the bent steel plate segment from compressing and wrinkling, while the lower support roller mechanism 4 prevents the lower side of the bent steel plate segment from being excessively stretched or cracked (e.g., ...). Figure 2 and Figure 3 As shown in the figure, during the entire bending process, the bent part is dynamically supported and pressure is maintained to precisely control the material flow in the bent part, reduce the scrap rate, and ensure the water-stopping effect of the final steel plate waterstop.

[0052] In this invention, the upper roller mechanism 2 and the corresponding supporting roller pressing mechanism 4, and the lower roller mechanism 3 and the corresponding supporting roller pressing mechanism 4 form guide channels from both upper and lower directions to guide the centered positioning of the bent steel plate segment; the mounting component 41 adjusts the support angle and range of the supporting roller pressing component 42 according to the bending angle of the bent steel plate segment, increasing the adaptability of the equipment. When producing different batches (with different bending angles) of bent steel plate segments, the supporting roller pressing mechanism 4 only needs to be adjusted once when the batch changes, and after adjustment, mass production can begin without frequent adjustments; The double support of the support roller pressing component 42 and the stabilizing component 43 provides dynamic support and pressure holding for the bending section, precisely controlling the material flow in the bending section and reducing the scrap rate. Although the present invention adds the support roller pressing mechanism 4 compared with the existing equipment, increasing the equipment cost, the present invention can avoid the twisting and warping of the steel plate, actively control the bending and forming of the bending steel plate segments with different bending angles, and ensure the water-stopping effect of the final steel plate waterstop product. From the perspective of long-term economic benefits, the equipment cost of the increased structure of the present invention compared with the existing technology is negligible.

[0053] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0054] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0055] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0056] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An automatic bending machine for tunnel steel plate waterstops, comprising a frame, characterized in that, The frame is symmetrically arranged with two lower roller shaft mechanisms at the front and back, and the frame is also provided with an upper roller shaft mechanism arranged in an isosceles triangle with the two lower roller shaft mechanisms. Both the upper roller shaft mechanism and the lower roller shaft mechanism are provided with a support roller pressing mechanism, and the support roller pressing mechanism includes an installation component provided on the upper roller shaft mechanism and the lower roller shaft mechanism. The installation component is provided with a support roller pressing component and a stabilizing component. The installation component, the support roller pressing component and the stabilizing component are all provided with an annular rubber sleeve. The upper roller mechanism and the corresponding support roller pressing mechanism, and the lower roller mechanism and the corresponding support roller pressing mechanism form guide channels from the upper and lower directions respectively, guiding the bending steel plate segment to center and position, and providing dynamic support and pressure holding for the bending part. The support roller pressing assembly provides primary support for the annular rubber sleeve and the bending steel plate segment. The installation assembly supports the support roller pressing assembly and adjusts the support angle and range of the support roller pressing assembly according to the bending angle of the bending steel plate segment. The stabilization assembly assists the support roller pressing assembly in providing secondary support for the annular rubber sleeve and the bending steel plate segment and locks the adjusted state of the support roller pressing assembly. The mounting assembly includes mounting rings. Mounting rings can be detachably mounted on the left and right side walls of the upper roller shaft mechanism's roller one and the lower roller shaft mechanism's roller two. The inner ring wall of the mounting ring is fixedly connected to an inner support ring by three connecting plates. The inner support ring is sleeved and mounted on the outer wall of the corresponding central shaft one and central shaft two. Hydraulic rods are mounted on the side of the three connecting plates away from the corresponding roller one and roller two, and the output ends of the hydraulic rods are connected to a movable ring. The support roller pressing assembly includes a hinge seat. Multiple hinge seats are circumferentially fixedly connected to the side of the mounting ring away from the corresponding roller one and roller two, and a support member is hinged on the hinge seat. The outer ring wall of the movable ring is hinged to the support member through a connector. The stabilization component includes a sliding ring. The mounting ring is a detachable hollow structure, and the sliding ring is slidably connected to the inside of the mounting ring by an electric slider. Multiple wedges are detachably mounted circumferentially on the side of the sliding ring away from the corresponding roller one and roller two by a connecting rod. A protrusion is fixedly connected to the side of the wedge away from the axis of the sliding ring.

2. The automatic bending machine for tunnel steel plate waterstops according to claim 1, characterized in that, The upper roller mechanism is driven to rotate counterclockwise by a drive mechanism one installed on the left, and the lower roller mechanism is driven to rotate clockwise by a drive mechanism two installed on the right. The bending steel plate segment is driven from back to front. The upper roller mechanism is driven by a hydraulic mechanism installed on the frame to adjust the downward pressure.

3. The automatic bending machine for tunnel steel plate waterstops according to claim 1, characterized in that, The upper roller mechanism includes a central shaft detachably mounted to the drive mechanism 1, and a circular roller 1 is coaxially and fixedly connected to the middle of the central shaft 1. The lower roller mechanism includes a central shaft 2 detachably mounted to the drive mechanism 2, and a circular roller 2 is coaxially and fixedly connected to the middle of the central shaft 2.

4. The automatic bending machine for tunnel steel plate waterstops according to claim 1, characterized in that, Both the outer walls of the first and second central shafts are symmetrically provided with slide rail assemblies. Each slide rail assembly includes multiple slide rails distributed circumferentially. The movable ring is slidably connected to the corresponding slide rail assembly by a slider that is circumferentially fixed on the inner ring wall.

5. An automatic bending machine for tunnel steel plate waterstops according to claim 4, characterized in that, The wedges and supports are staggered, the connecting rod slides left and right through the mounting ring, the supports and protrusions together provide internal support for the annular rubber sleeve, and the side of the sliding ring away from the corresponding roller one and roller two is connected to multiple locking parts by a spring rod.

6. An automatic bending machine for tunnel steel plate waterstops according to claim 5, characterized in that, The locking elements and wedges are staggered, the locking elements correspond to the hinge seats, and the locking elements are slidably connected to the interior of the corresponding hinge seats. The support includes a shaft hinged to the hinge seat and arc-shaped plates connected to both ends of the shaft.

7. An automatic bending machine for tunnel steel plate waterstops according to claim 6, characterized in that, Multiple toothed blocks are fixedly connected to the outer wall of the middle part of the shaft in a circumferential direction. A toothed block is fixedly connected to the side of the locking member that is close to the support member, and the locking member is used to lock the support member in the adjusted state.

Images