Two-dimensional and three-dimensional integrated similar material laying device based on similar model experiment

Abstract

The invention discloses a two-dimensional and three-dimensional integrated similar material laying device based on a similar model experiment. A front baffle and a sliding rail provide linear pushing, and a guide tongue and a ball are connected at an inlet to be positioned and rectified; and after the laying device is in place, the oil cylinder of the rear wheel set is switched into a landing support, so that the supporting block and the propping piece bear the locked laying device. The device is characterized by comprising a trolley, a front partition and a two-dimensional and three-dimensional integrated device in butt joint with the trolley, and the trolley comprises a loading plate, a reinforcing plate, a wheel set module, a landing locking module and a front end guide butt joint assembly; the front end guide butt joint assembly comprises a guide tongue and a hydraulic telescopic rod, the guide tongue enters a guide groove of the two-dimensional and three-dimensional integrated device to achieve guide positioning and deviation correction during butt joint, the wheel set module comprises a wheel set oil cylinder, a wheel carrier and wheels, and the wheel set oil cylinder is used for switching a walking state and a landing locking state; the landing locking module provides anti-skid locking in a landing locking state, and a top proximity switch is arranged in a butt joint area and used for in-place detection and pushing stopping.

Description

Technical Field

[0001] This invention relates to a device for laying similar materials (prefabricated rock mass samples) in a two- or three-dimensional integrated device for similar model experiments, belonging to the field of similar model experiment technology. Specifically, it relates to a laying device that possesses guiding and positioning capabilities, deviation correction capabilities, arrival detection and stop control capabilities when pushed into the docking area, and provides landing locking stability during the laying and sealing stages. Background Technology

[0002] In similar model experiments in the field of geotechnical engineering, it is usually necessary to lay pre-prepared similar material samples or precast rock mass samples to the designated experimental area according to a predetermined process and rhythm, and to align them with the entrance and docking area of ​​the experimental chamber to ensure the accuracy and repeatability of subsequent loading, observation and other experimental processes. Existing sample handling and laying methods mostly adopt manual handling, simple trolleys, or pushing trolleys into the device through a pushing mechanism. In actual operation, the trolley is prone to deflection due to instability in the pushing direction and the point of force application during the pushing process; when there is no effective guiding constraint at the entrance docking stage, deviation, increased insertion resistance or even jamming may occur; when there is no reliable detection and stopping control after positioning, overshoot may occur, affecting the laying and positioning accuracy; if the trolley is still in a rolling support state during the laying and sealing stages, it is prone to micro-movement, slippage or torsion due to lateral forces, vibration or disturbance, which reduces the laying accuracy and affects the sealing quality. Summary of the Invention

[0003] To improve the above situation, the present invention provides a two- and three-dimensional integrated similar material laying device based on similar model experiments. It provides a front partition with a slide rail to provide straight pushing, a guide tongue with a ball bearing to connect and correct the position at the entrance; after the position is reached, the wheel set cylinder switches to ground support, so that the support block and the abutment are locked.

[0004] The two- and three-dimensional integrated similar material laying device based on similar model experiments of the present invention is implemented as follows: The two- and three-dimensional integrated similar material laying device based on similar model experiments of the present invention includes a trolley, a front partition, and a two- and three-dimensional integrated device that docks with the trolley; The trolley includes a loading plate, a reinforcing plate, a wheel assembly module, a landing locking module, and a front-end guide docking assembly; The loading plate is used to support similar material samples; the reinforcing plate is disposed below the loading plate and forms a reinforcing structure to improve the bending and torsional stiffness of the loading plate. The front-end guiding docking assembly is located at the front end of the trolley. The front-end guiding docking assembly includes a guide tongue and a hydraulic telescopic rod for driving the guide tongue to extend and retract. The guide tongue is used to enter the guide groove of the two-dimensional and three-dimensional integrated device during docking to guide, position and correct the deviation of the trolley. The end and side of the guide tongue are provided with ball bearings to change the sliding friction between the guide tongue and the guide groove into rolling friction. Preferably, there are two sets of front-end guide docking components, and the two sets of front-end guide docking components are symmetrically arranged at the front end of the trolley. The wheelset module includes a wheelset cylinder, a wheel frame, and wheels. The wheelset cylinder drives the trolley to switch between a walking state and a ground-locked state. The wheel assembly module is positioned below the reinforcing plate. The movable end of the wheel assembly cylinder is connected to the reinforcing plate, and the fixed end of the wheel assembly cylinder is connected to the wheel frame. The wheel is rotatably mounted on the wheel frame. The landing locking module includes a support block and a bracing member. In the landing locking state, the support block and the bracing member contact the ground to support the trolley and prevent slipping. The ground locking module is located below the reinforcing plate. Preferably, there are two support blocks symmetrically arranged on the sides of the reinforcing plate. Preferably, there are two abutment members, respectively located at the front and rear ends of the reinforcing plate. The front partition is equipped with casters at its bottom, which limit its linear movement along the slide rail of the two-dimensional / three-dimensional integrated device and are driven by a hydraulic push rod. The trolley is equipped with a connecting plate. Under the drive of the hydraulic push rod, the front partition applies a pushing force to the trolley through the connecting plate to push the trolley forward and dock with the two-dimensional / three-dimensional integrated device. The integrated two-dimensional and three-dimensional device is equipped with a top proximity switch in the docking area. Preferably, a fixed metal target block is installed on the trolley at a position corresponding to the proximity switch. The proximity switch detects the fixed metal target block to detect the trolley's arrival signal, and stops the hydraulic push rod from advancing when the arrival signal is detected. Preferably, the top proximity switch is connected to a PLC, and the PLC controls the extension, retraction, and stopping of the hydraulic push rod. Preferably, the PLC controls the extension, retraction, and stopping of the hydraulic telescopic rod. After the trolley is in place, the front partition, the two-dimensional and three-dimensional integrated device, and the rear partition form a closed boundary to seal and isolate similar materials. The front partition can be equipped with an observation window for observing the state of the sample. Beneficial effects

[0005] 1. By using a front baffle and sliding rail to limit linear motion and connecting plates to stabilize force transmission, the pushing direction and the point of application of the thrust can be controlled, reducing the risk of trolley yaw caused by pushing eccentricity and improving the consistency of linear propulsion and repetitive positioning.

[0006] Second, the inlet guide structure that enters the guide groove through the guide tongue achieves pilot positioning and correction constraint, and works with the ball to convert sliding friction into rolling friction, reducing insertion resistance and jamming risk, achieving smooth insertion—self-centering—stable entry into the docking area, and improving docking efficiency and reliability.

[0007] Third, by using a top proximity switch to detect the position and control the trolley to stop, overshoot can be avoided, ensuring that the trolley stops at the designated position and improving the accuracy of the laying position and the stability of the sealing boundary.

[0008] Fourth, the wheel set hydraulic cylinder enables the switching between walking and ground locking states, and after reaching the position, the support block and the abutment component form a rigid ground support and anti-slip constraint, which significantly improves the resistance to lateral force, torsion and sway and micro-motion during the laying and sealing stages. Attached Figure Description

[0009] Figure 1 This is a three-dimensional structural diagram of the two- and three-dimensional integrated similar material laying device based on similar model experiments according to the present invention; Figure 2 This is a three-dimensional structural diagram of the two- and three-dimensional integrated similar material laying device based on similar model experiments according to the present invention. Figure 3 This is a three-dimensional structural diagram of the front partition of the two- and three-dimensional integrated similar material laying device based on similar model experiments of the present invention; Attached Figure

[0010] Among them are: loading plate (1), reinforcing plate (2), guide tongue (3), ball (4), hydraulic telescopic rod (5), wheel set cylinder (6), wheel frame (7), wheel (8), support block (9), support piece (10), connecting piece (11), two-dimensional and three-dimensional integrated device (12), and front partition (13). Detailed Implementation

[0011] The present invention provides a two- and three-dimensional integrated similar material laying device based on similar model experiments, which includes a trolley, a front partition (13), and a two- and three-dimensional integrated device (12) that docks with the trolley. Among them, the two-dimensional and three-dimensional integrated device (12) provides interface conditions such as inlet, guide groove, docking area and top proximity switch, The trolley includes a loading plate (1), a reinforcing plate (2), a wheel assembly module, a landing locking module, and a front-end guide docking assembly; The loading plate (1) is used to support the rock mass sample (similar material); the reinforcing plate (2) is set below the loading plate (1) and forms a box-type reinforcing structure to improve the bending and torsional stiffness of the loading plate (1); The front-end guide docking assembly is located at the front end of the trolley. The front-end guide docking assembly includes a guide tongue (3) and a hydraulic telescopic rod (5) for driving the guide tongue (3) to extend and retract. The guide tongue (3) is used to enter the guide groove of the two-dimensional and three-dimensional integrated device (12) during docking to guide, position, and constrain the trolley. Ball bearings (4) are provided at the end and sides of the guide tongue (3) to change the sliding friction between the guide tongue (3) and the guide groove into rolling friction, thereby reducing friction and jamming risks and allowing for small-angle or small-eccentric self-alignment. Preferably, there are two sets of front-end guide docking components, and the two sets of front-end guide docking components are symmetrically arranged at the front end of the trolley. Preferably, the front end of the guide tongue (3) has an arc-shaped gradient structure, while the rear end has a constant width. The wheel assembly module includes a wheel assembly cylinder (6), a wheel frame (7), and wheels (8). The wheel assembly cylinder (6) drives the trolley to switch between a walking state and a ground-locked state. When the wheel assembly cylinder (6) extends upward, the wheel frame (7) and wheels (8) bear the load, and the trolley can roll forward. When the wheel assembly cylinder (6) retracts downward, the trolley body relatively descends, forming a ground-locked state, creating conditions for landing support. The wheel assembly module is located below the reinforcing plate (2). The movable end of the wheel assembly cylinder (6) is connected to the reinforcing plate (2), and the fixed end of the wheel assembly cylinder (6) is connected to the wheel frame (7). The wheel (8) is rotatably mounted on the wheel frame (7). The ground locking module includes a support block (9) and a support member (10). When the ground is locked, the support block (9) and the support member (10) are in contact with the ground to bear the vertical load and provide a large friction force to support the trolley and prevent it from slipping. The landing locking module is located below the reinforcing plate (2), and the support blocks (9) are preferably two, symmetrically arranged on the side of the reinforcing plate (2) to improve the resistance to lateral thrust and suppress lateral movement or head swing. The abutment (10) is preferably two, respectively arranged at the front and rear ends of the reinforcing plate (2). It can be a wedge or an additional support structure. After the wheel cylinder (6) retracts downward, it contacts the ground to form additional abutment and anti-slip constraint, so as to suppress micro-movements during the paving process and improve the anti-torsional swaying ability. The front partition (13) is equipped with casters at the bottom and moves linearly along the slide rail of the two-dimensional integrated device (12), and is driven to move forward, stop and move backward by a hydraulic push rod; The trolley is equipped with a connecting piece (11) as the force transmission boundary with the front partition. The front partition (13) applies a thrust to the trolley through the connecting piece (11) under the drive of the hydraulic push rod, so as to push the trolley to move and dock with the two-dimensional and three-dimensional integrated device (12), while ensuring that the contact surface position is determined and avoiding the trolley from eccentric thrust. Preferably, the connecting piece (11) and the front partition (13) are detachably connected. The two-dimensional and three-dimensional integrated device (12) is equipped with a top proximity switch in the docking area. Preferably, a fixed metal target block is installed on the trolley at a position corresponding to the proximity switch. The proximity switch detects the fixed metal target block to detect the trolley's arrival signal, and stops the hydraulic push rod from advancing when the arrival signal is detected. Preferably, the top proximity switch is connected to a PLC, and the PLC controls the extension, retraction, and stopping of the hydraulic push rod. Preferably, the PLC controls the extension, retraction, and stopping of the wheel assembly cylinder (6). Preferably, the PLC controls the extension, retraction, and stopping of the hydraulic telescopic rod (5). After the trolley is in place, the front partition (13) forms a closed boundary with the two-dimensional and three-dimensional integrated device (12) and the rear partition to seal and isolate similar materials. The front partition (13) can be equipped with an observation window for observing the state of the sample. In use, in the initial state, the pre-prepared rock mass sample (similar material) is loaded onto the loading plate (1) using a mechanical boom; the wheel cylinder (6) is in a walking state, supported by the wheels (8), and the support block (9) and the abutment (10) are off the ground; the guide tongue (3) is in a retracted or docking position to avoid collision before reaching the entrance; when it is necessary to advance the paving, the hydraulic push rod pushes the front partition along the slide rail, and the slide rail limit ensures the direction of movement of the front partition; the front partition pushes the trolley through the connecting piece (11), and the trolley relies on the wheel frame ( 7) Rolling forward with the wheels (8), the straightness of this section is ensured by the straightness of the front partition slide rail, the stability of the thrust application point, and the rolling of the small wheel group. When the trolley approaches the entrance of the two-dimensional and three-dimensional integrated device (13), the hydraulic telescopic rod (5) drives the guide tongue (3) to extend and maintain the docking posture; the guide tongue (3) enters the guide groove of the device (13) to constrain the lateral and yaw degrees of freedom of the trolley; the ball (4) rolls in the guide groove to reduce friction and jamming, and realizes insertion-self-centering-stable entry into the docking area; the trolley enters After docking, the top proximity switch detects the positioning signal; the PLC control system stops the hydraulic push rod, the front partition stops advancing, the trolley stops at the specified position, and the control wheel cylinder (6) retracts, causing the trolley body to descend relatively; the support block (9) grounds and gradually bears the load, and the wheels (8) are unloaded; the abutment (10) forms additional abutment and anti-slip constraint with the ground, thereby changing the trolley from a rolling support to a rigid ground support, meeting the high stability requirements of the laying and sealing process; after the trolley is in place, the front partition connects with the two-dimensional and three-dimensional integrated equipment. The front and rear partitions form a closed boundary to seal similar materials; the trolley loading plate (1) serves as the base plate of the two-dimensional and three-dimensional integrated device for loading tests, and the observation window is used by the experimenters to observe the sample status in real time, such as cracks, displacement, delamination, etc.; when it is necessary to exit and reset, the wheel cylinder (6) extends to lift the vehicle body, so that the support block (9) and the abutment (10) are off the ground; the front partition is pulled back by the hydraulic push rod, and the trolley exits or is pulled back; the guide tongue (3) is retracted by the telescopic rod (5) to complete one laying cycle; The system achieves the goal of using the front partition and slide rail to provide straight pushing, with the guide tongue and ball bearings controlling the positioning and correction at the entrance; after reaching the position, the wheel assembly cylinder switches to ground support, so that the support block and the abutment can bear the locking purpose.

[0012] Other similar embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art that are not disclosed herein.

[0013] It should be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to fixed connections such as folded edges, rivets, pins, adhesives, and welds; detachable connections such as threaded connections, snap-fit ​​connections, and hinges; integral connections; electrical connections; direct connections; or indirect connections via an intermediate medium; or internal connections between two components. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0014] The above embodiments are preferred embodiments of the present invention. Due to space limitations, the applicant has not used other embodiments, but this is not intended to limit the scope of the present invention. Any person skilled in the art can make some modifications without departing from the scope of the present invention; that is, all equivalent modifications made in accordance with the present invention should be covered by the scope of the present invention.

Claims

1. A two- or three-dimensional integrated similar material laying device based on similar model experiments, characterized in that... The system includes a two-dimensional / three-dimensional integrated device, a trolley, and a front partition. The trolley includes a loading plate, a reinforcing plate located below the loading plate, a wheel assembly module, a landing locking module, and a front guide docking assembly. The front guide docking assembly includes a guide tongue and a hydraulic telescopic rod for driving the guide tongue to extend and retract. The guide tongue is used to enter the guide groove of the two-dimensional / three-dimensional integrated device during docking to guide, position, and correct the trolley. The wheel assembly module includes a wheel cylinder, a wheel frame, and wheels. The wheel cylinder is used to drive the... The trolley switches between a walking state and a ground-locked state; the ground-locking module includes a support block and a bracing member. When the wheel cylinder switches to the ground-locked state, the support block and the bracing member contact the ground to support the trolley and prevent slippage; the front partition is equipped with a structure that limits linear movement along the slide rail and is driven by a hydraulic push rod; the trolley is equipped with a connecting piece, and the front partition applies a thrust to the trolley through the connecting piece under the drive of the hydraulic push rod to push the trolley forward and dock with the two-dimensional and three-dimensional integrated device.

2. The two- and three-dimensional integrated similar material laying device based on similar model experiments according to claim 1, characterized in that... The front-end guide docking components are in two sets, and the two sets of front-end guide docking components are symmetrically arranged at the front end of the trolley.

3. The two- and three-dimensional integrated similar material laying device based on similar model experiments according to claim 1, characterized in that... The guide tongue is provided with balls at its end and side, so that the sliding friction between the guide tongue and the guide groove is changed to rolling friction. The front end of the guide tongue has an arc-shaped gradient structure, while the rear end has a constant width.

4. The two- and three-dimensional integrated similar material laying device based on similar model experiments according to claim 1, characterized in that... When the wheel cylinder extends upward, it causes the wheel frame and wheel to bear the load and form a walking state; when the wheel cylinder retracts downward, it causes the vehicle body to descend relatively and causes the support block and the abutment to contact the ground and form a ground-locked state.

5. The two- and three-dimensional integrated similar material laying device based on similar model experiments according to claim 1, characterized in that... There are two support blocks, which are symmetrically arranged on the side of the trolley to improve the trolley's ability to resist lateral thrust and suppress lateral movement or head swaying.

6. The two- and three-dimensional integrated similar material laying device based on similar model experiments according to claim 1, characterized in that... The two supporting members are respectively arranged at the front and rear ends of the trolley, and are used to form additional support and anti-slip constraints when the trolley is locked on the ground to suppress the micro-movement of the trolley during the laying process.

7. The two- and three-dimensional integrated similar material laying device based on similar model experiments according to claim 1, characterized in that... The two-dimensional and three-dimensional integrated device is equipped with a top proximity switch in the docking area to detect the arrival signal of the trolley and to stop the hydraulic push rod from advancing when the arrival signal is detected.

8. The two- and three-dimensional integrated similar material laying device based on similar model experiments according to claim 1, characterized in that... The two-dimensional and three-dimensional integrated device is equipped with a top proximity switch in the docking area to detect the arrival signal of the trolley and to stop the hydraulic push rod from advancing when the arrival signal is detected.

9. The two- and three-dimensional integrated similar material laying device based on similar model experiments according to claim 1, characterized in that... The guide groove of the two-dimensional and three-dimensional integrated device is configured to cooperate with the guide tongue to constrain the lateral and yaw degrees of freedom of the trolley and allow the trolley to achieve self-centering during entry. The bottom of the front partition is equipped with casters and moves linearly along the slide rail. After the trolley is in place, the front partition forms a closed boundary with the two-dimensional and three-dimensional integrated device and the rear partition to seal and isolate similar materials.

10. A two- or three-dimensional integrated similar material laying device based on similar model experiments according to claim 1, characterized in that... The reinforcing plate and the loading plate form a box-type reinforcing structure to improve the bending and torsional stiffness of the loading plate and reduce the impact of warping during the propulsion and landing locking process on positioning accuracy.

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