A swing arm locking mechanism of a slipform paver, a control method and a slipform paver

Abstract

The application discloses a swing arm locking mechanism of a slipform paver, a control method and the slipform paver, and comprises the following: a swing arm hingedly connected to a machine body of the slipform paver; a toothed plate installed on the swing arm; a sliding assembly comprising a sliding rail and a sliding block, wherein the sliding rail is laid along the length direction of the swing arm, and the sliding block is in sliding cooperation with the sliding rail; and a locking assembly installed on the sliding block and capable of sliding along the length direction of the swing arm; the locking assembly is in meshing locking or separation unlocking with the toothed plate through action, so as to limit the rotation angle of the swing arm. The application can realize the locking and unlocking of the swing arm at different angles, does not need artificial disassembly and assembly, saves operation time, and reduces labor intensity.

Description

Technical Field

[0001] This invention relates to a swing arm locking mechanism and control method for a slipform paver, and to a slipform paver in the field of road construction technology. Background Technology

[0002] As a core piece of equipment in road construction, slipform pavers typically have four hinged arms. Each arm can rotate around its hinge point, and the four arms are symmetrically distributed along the front-rear centerline and left-right centerline of the machine to ensure balanced force distribution and overall machine stability, thus providing excellent operational flexibility. In practical applications, the angle of the arms needs to be flexibly adjusted according to the working conditions: in construction scenarios, to avoid interference with obstacles such as formwork and reinforcing bars on both sides of the road surface, while ensuring the turning flexibility of the tracks, the arms need to be swung to a suitable angle and fixed; in transportation scenarios, to shorten the equipment's transport width and meet traffic requirements, the arms need to be rotated to a retracted state parallel to the paving width direction, and then returned to the working angle after arriving at the construction site. Therefore, the swinging and fixing of the arms are high-frequency operations during the use of slipform pavers.

[0003] Currently, the mainstream slipform pavers on the market generally adopt a "tie rod + locking pin" structure for fixing the swing arm. The specific implementation method is as follows: corresponding pin holes are opened on the machine body and the swing arm. When the swing arm swings to the target position, the tie rod connects the pin holes of the machine body and the swing arm, and the locking pin is inserted to complete the fastening. However, this traditional fixing method has significant technical drawbacks: First, the angle adjustment of the swing arm is limited by the length of the tie rod. Different swing angles require tie rods of corresponding lengths, resulting in an increased number of parts. Moreover, each angle adjustment requires manual disassembly and reassembly of the tie rod and locking pin, making the operation process cumbersome and greatly increasing the labor intensity of the operators. Second, the angle adjustment range of the swing arm is fixed by the length of the tie rod, making it impossible to flexibly adapt the angle continuously to complex and changing construction conditions, thus limiting the adaptability of the equipment to different working conditions. Third, when switching between the equipment's working state and transportation state, it is necessary to repeatedly perform the steps of disassembling the original tie rod and locking pin, adjusting the swing arm angle, and installing tie rods and locking pins of corresponding lengths. This operation is time-consuming and labor-intensive, seriously affecting the efficiency of switching between construction and transportation, and thus restricting the overall operating efficiency of the slipform paver. Summary of the Invention

[0004] To address the problems existing in the prior art, the present invention provides a swing arm locking mechanism, control method, and slipform paver, which can realize the locking and unlocking of the swing arm at different angles without manual disassembly and assembly, saving operation time and reducing labor intensity.

[0005] To achieve the above objectives, the present invention employs a sliding formwork paver swing arm locking mechanism, comprising: The swing arm is hinged to the body of the slipform paver; Toothed plate, mounted on the swing arm; A sliding assembly includes a slide rail and a sliding block, wherein the slide rail is laid along the length direction of the swing arm and the sliding block is slidably engaged with the slide rail; A locking component is mounted on the sliding block and can slide along the length of the swing arm with the sliding block; the locking component engages with the toothed plate to lock or disengage and unlock, thereby limiting the rotation angle of the swing arm.

[0006] As an improvement, a connecting assembly is provided between the swing arm and the fuselage, the connecting assembly including a fuselage pin hole seat, a swing arm pin hole seat, a pull rod and a pin shaft; The fuselage pin hole seat is installed on the fuselage, and the swing arm pin hole seat is fixedly installed on the locking assembly; one end of the pull rod is hinged to the fuselage pin hole seat via a pin, and the other end is hinged to the swing arm pin hole seat via a pin.

[0007] As an improvement, the locking assembly includes a mounting base, a locking plate, a sliding shaft, a connecting bracket, a hole bracket, a driving element, and a limiting bracket; The mounting base is mounted on the sliding block, the locking plate is rotatably connected to the mounting base, and the hole frame and the limiting frame are both fixed to the mounting base; The driving element is mounted on the limiting frame, and the output end of the driving element is driven to be connected to the connecting frame. The connecting frame is slidably engaged with the hole frame. The sliding shaft is hinged to the connecting frame. A top block and a spring are sequentially mounted on the sliding shaft. The spring elastically abuts against the end of the top block, and the locking plate is located above the top block.

[0008] As an improvement, a position sensor is installed on the limiting frame to detect the position of the top block and determine the locking state; the limiting frame is provided with a guide slide for the top block to slide.

[0009] As an improvement, the top block is a stepped variable diameter structure, including a large diameter section and a small diameter section coaxially integrated; when the top block slides along the sliding shaft axial direction, one of the large diameter section and the small diameter section is selected to support and cooperate with the locking plate; when the large diameter section supports the locking plate, the locking plate rotates upward and engages with the toothed plate to lock; when the small diameter section supports the locking plate, the locking plate rotates downward and separates from the toothed plate to unlock.

[0010] A second aspect of the present invention also provides a method for controlling the locking of a slipform paver's swing arm, based on the aforementioned slipform paver swing arm locking mechanism, comprising the following steps: Control the locking component to switch to the unlocked state, allowing the locking component to slide freely along the slide rail; The drive arm rotates to the target angle, and the locking component slides synchronously along the slide rail with the drive arm. Control the locking component to engage with the toothed plate and lock it in place, thus locking the angle of the swing arm.

[0011] As an improvement, the locking assembly engages with the toothed plate using a delayed locking method, specifically: After the locking action is performed, if the locking plate and the toothed plate are not engaged, the spring in the locking assembly remains in a stored state; Adjust the rotation angle of the swing arm until the locking plate and the toothed plate automatically engage and lock, and the position sensor will provide a locking signal.

[0012] As an improvement, the locking assembly engages with the toothed plate using a preset position locking method, specifically: The preset step rotation angle of the swing arm is used to calculate the meshing position of the locking plate and the toothed plate of the locking assembly based on the rotation center of the swing arm and the length of the pull rod. Control the swing arm to rotate in steps at a preset angle, so that the locking plate and the toothed plate directly engage and lock.

[0013] As an improvement, a combination of preset position locking and delayed locking is adopted: Prioritize controlling the swing arm to rotate at a preset angle so that the locking plate and the toothed plate engage and lock; If the position sensor does not detect a locking signal, the delayed locking mode is triggered, the swing arm angle is adjusted to make the locking plate engage with the toothed plate, and the preset angle parameters are corrected at the same time.

[0014] A third aspect of the present invention also provides a slipform paver, including a body and a swing arm, wherein the swing arm is hinged to the body and the slipform paver swing arm locking mechanism is installed between the body and the swing arm.

[0015] Compared with the prior art, the beneficial effects of the present invention are: (1) Based on the core structure of "swing arm, toothed plate, sliding component, and locking component", the toothed plate is laid along the length of the swing arm, and the locking component slides along the slide rail with the sliding block. With the tie rod hinge design of the connecting component, the traditional discrete point locking limitation is broken, and the continuous angle adjustment and locking of the swing arm throughout the entire stroke is realized. Users can freely select the swing arm angle and fix it precisely according to the construction needs, which greatly improves the adaptability of the slipform paver to complex working conditions.

[0016] (2) Based on the core control logic of "unlock-rotate-lock", there is no need for manual disassembly and assembly of locking pins, levers and other accessories. The entire process of unlocking the swing arm, adjusting the angle and locking the engagement can be completed by control commands alone. With preset position locking, delayed locking and compound locking modes, it can meet the fast locking requirements of standardized construction and cope with complex working conditions through automatic error correction, which can greatly shorten the operation time and reduce labor intensity.

[0017] (3) The locking assembly adopts a composite design of stepped top block support, spring preload and toothed engagement. When locking, the teeth mesh tightly, resisting impact and preventing loosening; when unlocking, the locking plate and the toothed plate are completely separated, without slippage interference, resulting in strong structural stability and low failure rate. With the help of position sensors to detect the locking status in real time, the locking status of the four swing arms can be intuitively fed back. If the locking is unsuccessful, it can automatically trigger a re-lock or alarm, effectively avoiding safety risks during construction and transportation.

[0018] (4) The locking mechanism can be directly adapted to the existing slipform paver's body and swing arm structure, and is compatible with both manual and automatic drive modes. No large-scale modification of the whole machine is required, resulting in low equipment upgrade costs. The integrated design of core components makes installation and maintenance convenient. Furthermore, the wear-resistant structure and buffer design reduce mechanical wear, extend the service life of the equipment, and further broaden the application scenarios and market competitiveness of the equipment. Attached Figure Description

[0019] Figure 1 A schematic diagram of the swing arm movement of a slipform paver; Figure 2 This is a schematic diagram of the swing arm locking mechanism of the present invention; Figure 3 This is a schematic diagram of the sliding component of the present invention; Figure 4 This is a diagram showing the unlocking state of the locking component of the present invention; Figure 5 This is a diagram showing the locking state of the locking component of the present invention; Figure 6 This is a diagram showing the delayed locking state of the locking component of the present invention; In the diagram: 1. Body, 2. Swing arm, 3. Swing drive element, 4. Locking mechanism, 4-1. Body pin hole seat, 4-2. Swing arm pin hole seat, 4-3. Pull rod, 4-4. Pin shaft, 4-5. Slide rail, 4-6. Sliding block, 4-7. Tooth plate, 4-8. Locking assembly, 4-8-1. Mounting base, 4-8-2. Locking plate, 4-8-3. Top block, 4-8-4. Sliding shaft, 4-8-5. Spring, 4-8-6. Nut, 4-8-7. Connecting bracket, 4-8-8. Hole bracket, 4-8-9. Drive element, 4-8-10. Limit bracket, 4-8-11. Position sensor. Detailed Implementation

[0020] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments and specific features in the embodiments are detailed descriptions of the technical solution of the present application, rather than limitations thereof. In the absence of conflict, the embodiments and technical features in the embodiments can be combined with each other.

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below. However, it should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of the invention.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention.

[0023] like Figures 1-6 As shown, a sliding formwork paver swing arm locking mechanism includes: The swing arm 2 is hinged to the body 1 of the slipform paver, providing a basis for flexible adjustment of the swing arm angle; Tooth plates 4-7 are fixedly installed on the side wall of the swing arm 2, and continuous tooth grooves are arranged along the length of the swing arm to provide the swing arm 2 with full-stroke, multi-angle locking points; The sliding assembly includes a slide rail 4-5 and a sliding block 4-6. The slide rail 4-5 is laid along the length of the swing arm 2, and the sliding block 4-6 slides in conjunction with the slide rail 4-5 to provide smooth and precise sliding guidance for the locking assembly 4-8, adapting to the positional adaptation requirements of the swing arm rotation angle. The locking component 4-8 is installed on the sliding block 4-6 and can slide along the length of the swing arm 2 with the sliding block 4-6. The locking component 4-8 achieves engagement and locking or disengagement and unlocking with the toothed plate 4-7 through its own action. It can limit the rotation angle of the swing arm 2 without manual disassembly and assembly of parts, which greatly simplifies the operation process.

[0024] In some embodiments, such as Figure 2 As shown, a connecting assembly is provided between the swing arm 2 and the body 1. The connecting assembly includes a body pin hole seat 4-1, a swing arm pin hole seat 4-2, a pull rod 4-3, and a pin shaft 4-4. The fuselage pin hole seat 4-1 is installed on the fuselage 1, and the swing arm pin hole seat 4-2 is fixedly installed on the locking assembly 4-8. One end of the pull rod 4-3 is hinged to the fuselage pin hole seat 4-1 via a pin 4-4, and the other end is hinged to the swing arm pin hole seat 4-2 via a pin 4-4. This connecting assembly adopts a single pull rod 4-3 adaptive linkage structure, eliminating the need to replace pull rods of different lengths according to the swing arm angle. Through hinged cooperation, it automatically adapts to the sliding position of the locking assembly as the swing arm 2 rotates, ensuring the stability of the structural linkage.

[0025] In some embodiments, such as Figures 4-6As shown, the locking assembly 4-8 includes a mounting base 4-8-1, a locking plate 4-8-2, a sliding shaft 4-8-4, a connecting bracket 4-8-7, a hole bracket 4-8-8, a driving element 4-8-9, and a limiting bracket 4-8-10; The mounting base 4-8-1 is mounted on the sliding block 4-6, serving as the mounting base for the locking assembly 4-8 and ensuring the operational stability of each component; the locking plate 4-8-2 is rotatably connected to the mounting base 4-8-1, and the hole bracket 4-8-8 and the limiting bracket 4-8-10 are both fixedly mounted on the mounting base 4-8-1; The driving element 4-8-9 is fixedly installed on the limiting frame 4-8-10. The output end of the driving element 4-8-9 is driven to the connecting frame 4-8-7. The electric drive replaces manual operation to realize the automatic control of locking / unlocking. The connecting frame 4-8-7 is slidably engaged with the hole frame 4-8-8. The hole frame 4-8-8 provides linear guidance for the drive transmission to avoid transmission jamming. The sliding shaft 4-8-4 is hinged to the connecting frame 4-8-7. A spring 4-8-5 and a top block 4-8-3 are sequentially mounted on the sliding shaft 4-8-4. A nut 4-8-6 is installed on the end of the sliding shaft 4-8-4 located outside the top block 4-8-3. The spring 4-8-5 elastically abuts against the top block 4-8-3 to provide a constant elastic thrust to the top block 4-8-3, ensuring that the locking plate 4-8-2 and the toothed plate 4-7 are tightly engaged and do not loosen. The locking plate 4-8-2 is located above the top block 4-8-3 and can engage or disengage with the toothed plate 4-7 as the top block 4-8-3 moves up and down.

[0026] In some embodiments, such as Figure 4 As shown, a position sensor 4-8-11 is installed on the limiting frame 4-8-10 to detect the position of the top block 4-8-3 and determine the locking status, realizing real-time monitoring and feedback of the locking status. Operators can intuitively grasp the locking status of the swing arm 2, improving operational safety. The limiting frame 4-8-10 is provided with a guide rail for the top block 4-8-3 to slide, constraining the sliding trajectory of the top block 4-8-3 and improving the accuracy of the locking action.

[0027] In some embodiments, the top block 4-8-3 is a stepped variable diameter structure, including a large diameter portion and a small diameter portion coaxially integrated; when the top block 4-8-3 slides axially along the sliding shaft 4-8-4, one of the large diameter portion and the small diameter portion is selected to support and cooperate with the locking plate 4-8-2; through the stepped structure of the top block 4-8-3, the switching between the locking and unlocking states can be realized, resulting in a simplified structure and low failure rate; When the large-diameter section supports the locking plate 4-8-2, the locking plate 4-8-2 rotates upward and engages with the toothed plate 4-7 to lock securely, bearing the construction load without loosening; when the small-diameter section supports the locking plate 4-8-2, the locking plate 4-8-2 rotates downward and separates from the toothed plate 4-7 to unlock completely without interfering with the sliding of the locking components.

[0028] In some specific embodiments, the unlocking state of locking components 4-8 is as follows: Figure 4 As shown, mounting base 4-8-1 is fixedly mounted on sliding block 4-6. Mounting base 4-8-1 has a rotating shaft, and locking plate 4-8-2 is rotatably mounted on the rotating shaft of mounting base 4-8-1. The lower part of locking plate 4-8-2 contacts top block 4-8-3. Top block 4-8-3 is fitted onto sliding shaft 4-8-4 and can slide along sliding shaft 4-8-4. Spring 4-8-5 and nut 4-8-6 on sliding shaft 4-8-4 respectively limit the movement of top block 4-8-6. The two ends of 3; the sliding shaft 4-8-4 is hinged to the connecting frame 4-8-7 through the pin hole, and the connecting frame 4-8-7 slides along the hole frame 4-8-8 under the drive of the driving element 4-8-9; the fixed end of the driving element 4-8-9 is installed on the limiting frame 4-8-10, and the limiting frame 4-8-10 also integrates the guide slide of the top block 4-8-3 and the position sensor 4-8-11. The integrated structural design reduces the installation space and improves the structural compactness; When the locking assembly 4-8 is in the unlocked state, the driving element 4-8-9 is in the extended state. At this time, the small diameter part of the top block 4-8-3 is in contact with the locking plate 4-8-2 and the limit bracket 4-8-10. The locking plate 4-8-2 tilts downward under its own weight, and the toothed end of its end completely disengages from the tooth groove of the toothed plate 4-7. The locking assembly slides without obstruction, and the swing arm angle is adjusted flexibly and without restriction. The position sensor 4-8-11 does not detect the sensing plate on the top block 4-8-3 and sends an unlocking signal back to the control system. When locking components 4-8 are in the locked state, such as Figure 5 As shown, the driving element 4-8-9 retracts, driving the connecting frame 4-8-7 to move along the hole frame 4-8-8, thereby driving the sliding shaft 4-8-4 to move synchronously; the spring 4-8-5 pushes the top block 4-8-3 to move along the guide slide of the limiting frame 4-8-10, and the large diameter part of the top block 4-8-3 lifts the locking plate 4-8-2, so that the toothed end of the locking plate 4-8-2 engages with the tooth groove of the toothed plate 4-7, and the toothed engagement locks, with high positioning accuracy and strong load resistance, and the locking assembly 4-8 is completely locked; the position sensor 4-8-11 detects the sensing plate on the top block 4-8-3 and feeds back the locking signal to the control system. Example

[0029] A method for controlling the locking of a slipform paver's swing arm, based on the slipform paver's swing arm locking mechanism, includes the following steps: Control the locking component 4-8 to switch to the unlocked state, so that the locking component 4-8 can slide freely along the slide rail 4-5; Drive the swing arm 2 to rotate to the target angle, and the locking component 4-8 slides synchronously along the slide rail 4-5 with the swing arm 2; Control the locking component 4-8 to engage and lock with the toothed plate 4-7, thus completing the angle locking of the swing arm 2.

[0030] In some embodiments, the locking assembly 4-8 engages with the toothed plate 4-7 using a delayed locking method, which adapts to locking requirements at any angle, does not require precise alignment, and has a high fault tolerance rate. Specifically: After the locking action is performed, if the locking plate 4-8-2 and the toothed plate 4-7 are not aligned and engaged, the spring 4-8-5 in the locking assembly 4-8 remains in a compressed and stored state; Fine-tune the rotation angle of the swing arm 2 until the locking plate 4-8-2 and the toothed plate 4-7 automatically engage and lock, and the position sensor 4-8-11 feeds back the locking signal.

[0031] In some embodiments, the locking assembly 4-8 engages with the toothed plate 4-7 in a preset position locking method, which is suitable for standardized construction conditions, and features fast locking response and accurate positioning. Specifically: The stepping rotation angle of the pre-set swing arm 2 is calculated based on the rotation center of the swing arm 2, the installation position of the body pin hole seat 4-1, and the fixed length of the pull rod 4-3. The corresponding meshing position of the locking plate 4-8-2 and the toothed plate 4-7 of the locking assembly 4-8 is calculated. Control the swing arm 2 to rotate in steps at a preset angle, so that the locking plate 4-8-2 and the toothed plate 4-7 directly engage and lock.

[0032] In some embodiments, a composite control method combining preset position locking and delayed locking can also be adopted to balance accuracy and fault tolerance, offsetting the effects of mechanical manufacturing errors and control delays, thus representing the optimal control strategy. Prioritize controlling the swing arm 2 to rotate at a preset angle so that the locking plate 4-8-2 engages and locks with the toothed plate 4-7; If the position sensor 4-8-11 does not detect a locking signal, the delayed locking mode is automatically triggered, and the angle of the swing arm 2 is finely adjusted to make the locking plate 4-8-2 mesh with the toothed plate 4-7. At the same time, the control system corrects the preset angle parameters to achieve self-calibration and improve the subsequent locking accuracy.

[0033] In some specific embodiments, to achieve precise matching between the tooth profile of the locking plate 4-8-2 and the tooth groove of the toothed plate 4-7, this embodiment provides two matching methods: 1. Delayed locking at any position like Figure 6As shown, when the teeth of the locking plate 4-8-2 are not aligned with the tooth grooves of the toothed plate 4-7, a locking action is performed, and the driving element 4-8-9 retracts, driving the connecting frame 4-8-7 and the sliding shaft 4-8-4 to move; because the locking plate 4-8-2 and the limiting frame 4-8-10 do not have enough space to accommodate the large diameter of the top block 4-8-3, the top block 4-8-3 cannot slide completely into place, the spring 4-8-5 remains compressed and continues to provide thrust, and the position sensor 4-8-11 continuously feeds back the unlocking signal; At this time, the drive arm 2 rotates slightly, and the toothed plate 4-7 and the locking plate 4-8-2 are relatively displaced until the tooth shape and the tooth groove are aligned; the spring 4-8-5 pushes the top block 4-8-3 into place, lifting the locking plate 4-8-2 to engage with the toothed plate 4-7. Without manual intervention, the alignment and locking are automatically completed, and the position sensor 4-8-11 provides a locking signal.

[0034] 2. Precise locking at preset positions The rotation center of the swing arm 2, the installation position of the body pin hole seat 4-1, and the length of the pull rod 4-3 are all fixed values. The precise position of the locking plate 4-8-2 under different rotation angles of the swing arm 2 is simulated by mathematical calculation, and corresponding tooth grooves are machined on the tooth plate 4-7. Matching tooth grooves are continuously opened on the tooth plate 4-7 according to the step-by-step angle increasing law.

[0035] The control logic is as follows: when the control arm drive element 3 drives the swing arm 2 to rotate, the controller issues a step angle command, causing the swing arm 2 to rotate in steps of a°, 2a°, 3a°, etc. The locking plate 4-8-2 engages with the corresponding tooth groove on the tooth plate 4-7 in sequence, so as to realize the rapid and precise locking of the continuous angle position of the swing arm.

[0036] In practical applications, considering the characteristics of mechanical manufacturing errors and control delays, the preset position locking is preferred. If the swing arm 2 fails to lock successfully when it reaches the theoretical position, the position sensor 4-8-11 will not provide a locking signal feedback, and the delayed locking will be automatically triggered. The angle of the swing arm 2 will be finely adjusted until it engages and locks. The control system will synchronously correct the angle parameters, and the high locking accuracy can still be maintained after long-term use. Example

[0037] A slipform paver includes a body 1 and a swing arm 2, the swing arm 2 being hinged to the body 1, and a swing arm locking mechanism for the slipform paver being installed between the body 1 and the swing arm 2; the entire machine is upgraded through the locking mechanism, which greatly improves the switching efficiency between construction and transportation.

[0038] The slipform paver is equipped with four swing arms 2, each of which can rotate independently around the machine body 1. With the locking mechanism of the present invention, it has the ability to adjust at all angles and lock quickly, and has a strong adaptability to working conditions. During construction, the swing arms 2 are adjusted to the working angle according to road obstacles and paving width. During transportation, the swing arms 2 are rotated to the folded state parallel to the paving width. The state switching can be completed without disassembling or assembling parts.

[0039] like Figure 1 As shown, the rotation of the swing arm 2 can be driven by the swing drive element 3, and the locking mechanism 4 can achieve fully automated angle adjustment and locking. In conventional application scenarios, the swing drive element 3 can be eliminated, and the rotation adjustment can be completed by manually pushing the swing arm 2. The core function of the locking mechanism is not affected, and it can adapt to equipment models with different configuration requirements.

[0040] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A swing arm locking mechanism for a slipform paver, comprising: The swing arm is hinged to the body of the slipform paver; Toothed plate, mounted on the swing arm; A sliding assembly includes a slide rail and a sliding block, wherein the slide rail is laid along the length direction of the swing arm and the sliding block is slidably engaged with the slide rail; A locking component is mounted on the sliding block and can slide along the length of the swing arm with the sliding block; the locking component engages with the toothed plate to lock or disengage and unlock, thereby limiting the rotation angle of the swing arm.

2. The sliding formwork paver swing arm locking mechanism according to claim 1, characterized in that, A connecting assembly is provided between the swing arm and the machine body. The connecting assembly includes a machine body pin hole seat, a swing arm pin hole seat, a pull rod, and a pin shaft. The fuselage pin hole seat is installed on the fuselage, and the swing arm pin hole seat is fixedly installed on the locking assembly; one end of the pull rod is hinged to the fuselage pin hole seat via a pin, and the other end is hinged to the swing arm pin hole seat via a pin.

3. The sliding formwork paver swing arm locking mechanism according to claim 1, characterized in that, The locking assembly includes a mounting base, a locking plate, a sliding shaft, a connecting bracket, a hole bracket, a driving element, and a limiting bracket; The mounting base is mounted on the sliding block, the locking plate is rotatably connected to the mounting base, and the hole frame and the limiting frame are both fixed to the mounting base; The driving element is mounted on the limiting frame, and the output end of the driving element is driven to be connected to the connecting frame. The connecting frame is slidably engaged with the hole frame. The sliding shaft is hinged to the connecting frame. A top block and a spring are sequentially mounted on the sliding shaft. The spring elastically abuts against the end of the top block, and the locking plate is located above the top block.

4. The sliding formwork paver swing arm locking mechanism according to claim 3, characterized in that, The limiting frame is equipped with a position sensor to detect the position of the top block and determine the locking state; the limiting frame is provided with a guide slide for the top block to slide.

5. The sliding formwork paver swing arm locking mechanism according to claim 3, characterized in that, The top block is a stepped variable diameter structure, including a large diameter section and a small diameter section coaxially integrated; when the top block slides along the sliding shaft axial direction, one of the large diameter section and the small diameter section is selected to support and cooperate with the locking plate; when the large diameter section supports the locking plate, the locking plate rotates upward and engages with the toothed plate to lock; when the small diameter section supports the locking plate, the locking plate rotates downward and separates from the toothed plate to unlock.

6. A method for locking the swing arm of a slipform paver, characterized in that, The sliding paver swing arm locking mechanism according to any one of claims 1-5 includes the following steps: Control the locking component to switch to the unlocked state, allowing the locking component to slide freely along the slide rail; The drive arm rotates to the target angle, and the locking component slides synchronously along the slide rail with the drive arm. Control the locking component to engage with the toothed plate and lock it in place, thus locking the angle of the swing arm.

7. A method for locking and controlling the swing arm of a slipform paver according to claim 6, characterized in that, The locking assembly engages with the toothed plate using a delayed locking method, specifically: After the locking action is performed, if the locking plate and the toothed plate are not engaged, the spring in the locking assembly remains in a stored state; Adjust the rotation angle of the swing arm until the locking plate and the toothed plate automatically engage and lock, and the position sensor will provide a locking signal.

8. A method for locking and controlling the swing arm of a slipform paver according to claim 6, characterized in that, The locking assembly engages with the toothed plate using a preset position locking method, specifically: The preset step rotation angle of the swing arm is used to calculate the meshing position of the locking plate and the toothed plate of the locking assembly based on the rotation center of the swing arm and the length of the pull rod. Control the swing arm to rotate in steps at a preset angle, so that the locking plate and the toothed plate directly engage and lock.

9. A method for locking the swing arm of a slipform paver according to claim 8, characterized in that, A combination of preset position locking and delayed locking is used: Prioritize controlling the swing arm to rotate at a preset angle so that the locking plate and the toothed plate engage and lock; If the position sensor does not detect a locking signal, the delayed locking mode is triggered, the swing arm angle is adjusted to make the locking plate engage with the toothed plate, and the preset angle parameters are corrected at the same time.

10. A slipform paver, comprising a frame and a swing arm, wherein the swing arm is hinged to the frame, characterized in that, The slipform paver swing arm locking mechanism according to any one of claims 1-5 is installed between the machine body and the swing arm.

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