A mobile hydraulic template continuous end-mold removal device

Abstract

This utility model relates to the field of T-beam precast equipment technology, and in particular to a continuous end-mold removal device for a mobile hydraulic template. It includes a side-mold removal mechanism comprising a slide table, a servo hydraulic cylinder mounted on the slide table, and a sliding block mounted on the slide table and driven by the servo hydraulic cylinder; an adjustable support platform comprising a rigid support frame supporting the T-beam template, and multiple adjustment components arranged between the support frame and the sliding block for adjusting the tilt angle of the support frame platform; an end-mold removal mechanism comprising a demolding cylinder and an end mold mounted on the support frame, wherein the end mold includes a fixed end mold and a movable end mold that slides relative to the fixed end mold and perpendicular to the sliding block direction, driven by the demolding cylinder; and a control system, which is electrically connected to the servo hydraulic cylinder and the demolding cylinder. This utility model achieves automation of casting-adjustment-mold removal, greatly improving the production efficiency of the precast beam production line.

Description

Technical Field

[0001] This utility model relates to the technical field of T-beam prefabrication equipment, specifically to a mobile hydraulic template continuous end-mold removal device. Background Technology

[0002] T-beam formwork mainly consists of four parts: outer formwork, inner formwork, end formwork, and bottom formwork. After the concrete has been poured for a period of time, the formwork needs to be removed, separating the formwork from the concrete surface of the T-beam. In traditional construction, the end formwork is manually removed, but the edges of the T-beam ends are easily damaged, and demolding can easily become stuck, requiring a large number of personnel to repair the T-beam again, reducing work efficiency.

[0003] Existing technologies, such as the patent with publication number CN214834820U, disclose a mobile hydraulic T-beam end mold automatic removal device. This device achieves the purpose of quick removal of the T-beam end mold by setting an end mold driven by a hydraulic cylinder on a mobile flatcar. However, this device can only handle T-beams of a specific size. Nowadays, bridge engineering has various design requirements. In particular, T-beams with different design requirements have different cross slopes. Therefore, designing a device that can adapt to different cross slope requirements and also quickly remove the mold is particularly important for improving the efficiency of T-beam prefabrication. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a mobile hydraulic template continuous end-to-end mold removal device, which can improve the production efficiency of precast beam production lines.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a continuous end mold removal device for a mobile hydraulic template, including a side mold removal mechanism, comprising a slide table, a servo hydraulic cylinder mounted on the slide table, and a slide seat disposed on the slide table and driven by the servo hydraulic cylinder.

[0006] An adjustable support platform includes a rigid support frame that supports the T-beam template, and multiple adjustment components arranged between the support frame and the slide to adjust the tilt angle of the support frame platform.

[0007] The end mold removal mechanism includes a demolding cylinder mounted on a support frame and an end mold. The end mold includes a fixed end mold and a movable end mold that slides relative to the fixed end mold and perpendicular to the sliding direction of the slide block, driven by the demolding cylinder.

[0008] The control system is connected to the servo hydraulic cylinder and the demolding cylinder via electrical circuits.

[0009] Preferably, the end mold further includes a fixed frame and a sliding sleeve, and the movable end mold is fixedly mounted on the fixed frame; the fixed frame is connected to the piston rod of the demolding cylinder through a flange; the fixed frame is slidably connected to the support frame through the sliding sleeve.

[0010] Preferably, a locking bolt is provided between the movable end mold and the fixed end mold.

[0011] Preferably, the adjusting assembly includes a screw, an adjusting nut, a connector, and a pin. The upper part of the screw is threadedly connected to the support frame. The adjusting nut is sleeved on the screw and located on the lower side of the support frame. The lower end of the screw is rotatably connected to the slider through the connector and the pin.

[0012] Preferably, the lower end of the support frame is provided with a support foot, which is rotatably connected to the slide.

[0013] Preferably, the adjusting assembly further includes a fastening nut, which is sleeved on the upper end of the screw, while the lower end of the fastening nut abuts against the support frame.

[0014] Preferably, there are three demolding cylinders, and the central axes of the three demolding cylinders are distributed in an acute-angled triangle in the height direction of the support frame.

[0015] Preferably, the side mold removal mechanism further includes a push cylinder; the push cylinder is installed on the upper part of the support frame and close to the fixed end mold, and the piston rod output direction of the push cylinder is parallel to the sliding direction of the slide block; the push cylinder is connected to the control system via a circuit.

[0016] Preferably, the outer end of the piston rod of the push cylinder is provided with a push plate made of plastic.

[0017] Preferably, the slide block is provided with a pin, and the slide table is provided with a socket that mates with the pin.

[0018] Compared with the prior art, the beneficial effects of this utility model are: by setting demolding cylinders, jacking cylinders and end molds composed of fixed end molds and movable end molds on the support frame with adjustable cross slope and adjustable position, the entire process of pouring-adjustment-demolding is automated, which greatly improves the production efficiency of the precast beam production line. At the same time, this end mold removal device has significant economic value due to its high efficiency, high precision and high reliability, and is particularly suitable for the intelligent upgrading of large precast beam yards. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the front structure of the demolition device of this utility model;

[0020] Figure 2 This is a schematic diagram of the rear structure of the dismantling device of this utility model;

[0021] Figure 3 This is a schematic diagram of the left side structure of the demolition device of this utility model;

[0022] Figure 4 This is a schematic diagram of the slide table and slide base of this utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the adjustment component of this utility model.

[0024] In the diagram: 1. Slide table, 2. Slide block, 3. Adjustment component, 4. Support frame, 5. End mold, 6. Demolding cylinder, 7. Push cylinder, 8. Servo hydraulic cylinder, 21. Slider, 22. Connecting rod, 31. Screw, 32. Fastening nut, 33. Spring, 34. Adjusting nut, 35. Connector, 36. Pin, 51. Movable end mold, 52. Fixed end mold, 53. Fixing frame, 54. Sliding sleeve. Detailed Implementation

[0025] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings, so that those skilled in the art can more clearly understand how to practice this utility model. Although this utility model has been described in conjunction with its preferred embodiments, these embodiments are merely illustrative and not intended to limit the scope of this utility model.

[0026] See Figure 1-5 In one embodiment of this utility model, a continuous end-mold removal device for a mobile hydraulic template is provided. The hydraulic template is arranged along the length direction of a T-beam and includes: a side-mold removal mechanism, an end-mold removal mechanism, and an adjustable support platform. The side-mold removal mechanism includes a slide table 1, a servo hydraulic cylinder 8 fixedly mounted on the slide table 1, and a slide seat 2 slidably mounted on the slide table 1 and driven by the servo hydraulic cylinder 8. The adjustable support platform includes a rigid support frame 4 supporting the T-beam template and an adjustment component 3 arranged between the support frame 4 and the slide seat 2 for adjusting the platform tilt angle of the support frame 4. The end-mold removal mechanism includes a demolding cylinder 6 and an end mold 5 mounted on the support frame 4. The end mold 5 includes a fixed end mold 52 fixedly mounted and a movable end mold 51 driven by the demolding cylinder 6 and sliding relative to the fixed end mold 52 and parallel to the length direction of the T-beam.

[0027] Specifically, the slide table 1 consists of two parallel guide rails perpendicular to the length of the T-beam and a connector that fixes the two guide rails together. The slide block 2 is slidably mounted on the slide table 1 and can be driven by the servo hydraulic cylinder 8 to slide linearly on the slide table 1. Furthermore, the sliding stroke of the slide block 2 is ≥300mm and the repeatability is ±0.1mm.

[0028] The slide block 2 has an I-shaped structure and includes a slider 21 and a connecting rod 22. There are two sliders 21, which are slidably mounted on two guide rails respectively, and the two sliders 21 are fixedly connected by the connecting rod 22 so that the two sliders 21 can slide synchronously. The middle part of the connecting rod 22 is rotatably connected to the piston rod of the servo hydraulic cylinder 8.

[0029] In this embodiment, four adjustment components 3 are provided; the support frame 4 is provided on the upper side of the slide block 2 through the four adjustment components 3; specifically, the four adjustment components 3 are evenly distributed on the two sliders 21, and the two adjustment components 3 located on the same slider 21 are distributed along the length direction of the slide block 2; the adjustment component 3 includes a screw 31, a fastening nut 32, a spring 33, an adjusting nut 34, a connecting head 35, and a pin 36. The upper part of the screw 31 is threadedly connected to the support frame 4, the fastening nut 32 is sleeved on the upper end of the screw 31 and abuts against the support frame 4 to prevent the screw 31 from loosening; the adjusting nut 34 is sleeved on the lower part of the screw 31 and located on the lower side of the support frame 4, and the spring 33 is compressed between the adjusting nut 34 and the support frame 4 to provide cushioning; the connecting head 35 is fixedly provided on the lower end of the screw 31, and the screw 31 is rotatably connected to the slider 21 through the connecting head 35 and the pin 36;

[0030] In the initial state, the two adjusting nuts 34 located on the same slider 21 are at the same horizontal height. When it is necessary to adjust the tilt of the support frame 4, the two adjusting components 3 close to the servo hydraulic cylinder 8 can be adjusted. By rotating the adjusting nut 34, the length of the screw 31 between the adjusting nut 34 and the connector 35 is increased, so that the support frame 4 can tilt towards the T-beam to achieve the purpose of cross slope adjustment. It should be noted that in the actual operation process, in order to achieve precise adjustment, this end mold removal device is also equipped with professional measuring and calibration instruments such as angle gauges and electronic levels.

[0031] The end mold 5 is located inside the support frame 4. The end mold 5 also includes a fixed frame 53 and a sliding sleeve 54. The movable end mold 51 is fixed on the fixed frame 53 by welding. The fixed frame 53 is rigidly connected to the piston rod of the demolding cylinder 6 through a flange. The lower end of the fixed frame 53 is slidably connected to the structural component of the support frame 4, and the inner end of the fixed frame 53 is slidably connected to the structural component of the support frame 4 through the sliding sleeve 54. The number of sliding sleeves 54 can be increased or decreased according to the structural stability requirements. In the above manner, the movable end mold 51 can slide linearly relative to the fixed end mold 52 under the action of the demolding cylinder 6 and the support frame 4. Driven by the demolding cylinder 6, the movable end mold 51 can form an end mold structure with the fixed end mold 52 that cooperates with the T-beam template.

[0032] In addition, in order to ensure the structural stability of the end mold 5 after the movable end mold 51 and the fixed end mold 52 are combined, and to avoid premature demolding due to the pressure relief of the demolding cylinder 6, a manually operated locking bolt is provided between the movable end mold 51 and the fixed end mold 52. Under the action of the locking bolt, the end mold 5 can remain stable between casting and demolding. When demolding is required, the locking bolt only needs to be released first, and then the demolding cylinder 6 is controlled to work, so that the movable end mold 51 and the fixed end mold 52 are separated to achieve demolding.

[0033] In this embodiment, there are three demolding cylinders 6. The three demolding cylinders 6 are non-linearly spaced in the height direction of the support frame 4 to improve the stability of the movable end mold 51 during demolding. That is, the central axes of the three demolding cylinders 6 form an acute triangle distribution in the height direction of the support frame 4, with a minimum included angle ≥30°. The triangular distribution can reduce stress concentration and reduce the risk of demolding jamming compared to the linear distribution.

[0034] Furthermore, to prevent damage to the beam body during end mold removal, the side mold removal mechanism also includes a push cylinder 7 that works in conjunction with the servo hydraulic cylinder 8. The push cylinder 7 is installed on the upper part of the support frame 4 and close to the fixed end mold 52. The piston rod of the push cylinder 7 has an output direction perpendicular to the length direction of the T-beam. The outer end of the piston rod of the push cylinder 7 is provided with a push plate made of plastic. During end mold removal, bidirectional force is required, that is, the servo hydraulic cylinder 8 is responsible for pulling the template to achieve demolding, while the push cylinder 7 is responsible for pushing the beam body.

[0035] In this embodiment, the servo hydraulic cylinder 8 integrates an electro-hydraulic servo valve, which supports position-force dual closed-loop control and can switch between high-precision positioning mode (±0.05mm repeatability) and high-speed load mode (speed ≥100mm / s). To achieve this, the end mold removal device also needs to be equipped with a control system that is connected to the servo hydraulic cylinder 8 via circuit. This control system can also be connected to the demolding cylinder 6 and the push cylinder 7 to achieve demolding collaborative operation.

[0036] Furthermore, the control system not only includes a PLC controller and displacement sensors, but also features an SSI interface magnetostrictive displacement sensor (1μm resolution) directly mounted on the cylinder piston rod. The magnetostrictive displacement sensor is mounted via a vibration-damping bracket and has an IP67 protection rating, meeting the vibration resistance standard IEC 60068-2-6 (10-150Hz, 5g RMS). It also connects to the Beckhoff CX2040 via an EtherCAT bus. The PLC communication system (cycle time ≤ 1ms) features the following characteristics: multi-cylinder motion trajectory planning, real-time monitoring of cylinder pressure / displacement, and a three-level safety response: speed reduction compensation when pressure fluctuation > 15%, pause when displacement deviation > 3mm or pressure exceeds 110% limit, and emergency stop with self-locking triggered when continuous deviation > 2s. In actual production, the built-in multi-axis motion control module can receive real-time feedback from cylinder displacement sensors and can also use an adaptive fuzzy PID algorithm to correct servo valve commands in real time based on pressure-displacement composite feedback (-3dB bandwidth ≥ 5Hz for displacement control (load weight ≤ 200kg), steady-state error < 2% of rated output for force control). The output (20MPa range) ensures that the demolding cylinder 6 and the push cylinder 7 are synchronized by hardware signals (such as EtherCAT) to ensure that the multi-cylinder action is based on the main demolding cylinder 6. The trajectory tracking error of the cylinder 7 is <0.1mm (no load) or <0.3mm (rated load), which is achieved through EtherCAT distributed clock synchronization. Finally, when the servo hydraulic cylinder 8 reaches the preset stroke, the secondary demolding is intelligently started based on the pressure gradient detection (dP / dt): when the main demolding cylinder dynamic threshold is: when dP / dt < (0.1 × current pressure value) MPa / s and lasts for >150ms, the secondary demolding is triggered (minimum protection threshold 2MPa / s) to activate the push cylinder to assist in demolding.

[0037] The PID algorithm mentioned above is the most widely used closed-loop control strategy in control engineering. Its full name is proportional-integral-derivative control. Its core idea is to calculate the system error (the deviation between the target value and the actual value) in real time, and generate a control signal based on the combined effect of the proportional, integral and derivative components to accurately adjust the controlled object (such as servo hydraulic cylinders, motors, etc.).

[0038] Furthermore, based on the positioning mode and high-speed load mode of the aforementioned servo hydraulic cylinder 8, the switching between the positioning mode and the high-speed load mode during the operation of the end mold removal device must meet the following requirements: ① All cylinders are depressurized to <1MPa; ② The slide table 1 and the slide seat 2 are mechanically interlocked; ③ The new mode can only be activated after the PLC verifies the matching of the cross slope angle and the template position. Therefore, in addition to setting quick-release locking bolts between the movable end mold 51 and the fixed end mold 52, a manually operated pin is also required between the slide table 1 and the slide seat 2 to fix the position of the slide seat 2 and ensure the stability of the T-beam template supported by the support frame 4 during pouring. In practice, the pin can be placed on the slide seat 2, and a hole for the pin to mate with it can be opened on the guide rail.

[0039] It should be noted that during production, this device needs to appear in pairs at one end of the T-beam. Specifically, two dismantling devices are set up symmetrically facing each other on both sides of the T-beam support to form a structural fit.

[0040] In one embodiment, the spring 33, as a buffer, can be replaced by other parts with buffering functions, such as a rubber washer. In practice, the rubber washer can be fitted onto the screw 31 between the adjusting nut 34 and the support frame 4.

[0041] In one embodiment, the lower end of the support frame 4 is provided with a support foot, which is rotatably connected to the slide 2. The support foot can provide more stable support for the support frame 4.

[0042] In one embodiment, the slide table 1 further includes a fixing seat that fixes the two guide rails together, the fixing seat being used to support the servo hydraulic cylinder 8; a limiting plate is also provided on one end of the two guide rails near the T-beam to prevent the slide seat 2 from slipping off the slide table 1.

[0043] This end formwork removal device has three working modes: pouring mode, in which all hydraulic cylinders are depressurized and locking pins are in place, and the sliding block 2 is prohibited from being moved; cross slope adjustment mode, in which the demolding hydraulic cylinder 6 retracts and the pushing hydraulic cylinder 7 is unloaded, and the mold tilt angle is calibrated with an electronic level; demolding mode, after the locking pins are released and the beam is confirmed to be finally set, it is operated by two people (one person controls the hydraulic cylinders to demold / one person monitors the demolding situation).

[0044] This technical solution automates the entire process of casting, adjustment, and demolding by installing demolding cylinders, jacking cylinders, and end molds consisting of fixed and movable end molds on an adjustable cross slope and adjustable position support frame. This greatly improves the production efficiency of the precast beam production line. At the same time, this end mold removal device has significant economic value due to its high efficiency, high precision, and high reliability. It is particularly suitable for the intelligent upgrading of large precast beam yards.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A mobile hydraulic formwork continuous end-to-end form stripping apparatus, characterised in that: include The side mold removal mechanism includes a slide (1), a servo hydraulic cylinder (8) mounted on the slide (1), and a slide block (2) located on the slide (1) and driven by the servo hydraulic cylinder (8). The adjustable support platform includes a rigid support frame (4) that supports the T-beam template, and multiple adjustment components (3) arranged between the support frame (4) and the slide (2) for adjusting the tilt angle of the support frame (4) platform. The end mold removal mechanism includes a demolding cylinder (6) mounted on a support frame (4) and an end mold (5). The end mold (5) includes a fixed end mold (52) fixedly mounted and a movable end mold (51) driven by the demolding cylinder (6) and sliding relative to the fixed end mold (52) and perpendicular to the sliding direction of the slide block (2). The control system is connected to the servo hydraulic cylinder (8) and the demolding cylinder (6) via circuits.

2. A mobile hydraulic formwork continuous end-form dismantling apparatus according to claim 1, characterised in that: The end mold (5) also includes a fixed frame (53) and a sliding sleeve (54). The movable end mold (51) is fixedly mounted on the fixed frame (53). The fixed frame (53) is connected to the piston rod of the demolding cylinder (6) through a flange. The fixed frame (53) is slidably connected to the support frame (4) through the sliding sleeve (54).

3. A mobile hydraulic formwork continuous endform dismantling apparatus according to claim 1, characterised in that: A locking bolt is provided between the movable end mold (51) and the fixed end mold (52).

4. A mobile hydraulic formwork continuous endform dismantling apparatus according to claim 1, characterised in that: The adjustment assembly (3) includes a screw (31), an adjusting nut (34), a connector (35), and a pin (36). The upper part of the screw (31) is threadedly connected to the support frame (4). The adjusting nut (34) is sleeved on the screw (31) and located on the lower side of the support frame (4). The lower end of the screw (31) is rotatably connected to the slider (21) through the connector (35) and the pin (36).

5. A mobile hydraulic formwork continuous endform stripping apparatus according to claim 4 wherein: The lower end of the support frame (4) is provided with a support foot, which is rotatably connected to the slide (2).

6. A mobile hydraulic formwork continuous endform stripping apparatus according to claim 4 wherein: The adjustment assembly (3) also includes a fastening nut (32), which is sleeved on the upper end of the screw (31), while the lower end of the fastening nut (32) abuts against the support frame (4).

7. The mobile hydraulic template continuous end-formation removal device according to claim 1, characterized in that: The demolding cylinder (6) is provided in three parts, and the central axes of the three demolding cylinders (6) are distributed in an acute triangle in the height direction of the support frame (4).

8. A mobile hydraulic formwork continuous endform stripping apparatus according to claim 1, characterised in that: The side mold removal mechanism also includes a push cylinder (7); the push cylinder (7) is installed on the upper part of the support frame (4) and close to the fixed end mold (52), and the piston rod output direction of the push cylinder (7) is parallel to the sliding direction of the slide block (2); the push cylinder (7) is connected to the control system through a circuit.

9. A mobile hydraulic formwork continuous endform stripping apparatus according to claim 8, characterised in that: The outer end of the piston rod of the push cylinder (7) is provided with a push plate made of plastic.

10. The mobile hydraulic formwork continuous endform stripping apparatus of claim 1, wherein: The slide block (2) is provided with a pin, and the slide table (1) is provided with a socket that cooperates with the pin.

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