A portable highway reconstruction and expansion flame cutting device

Abstract

The application relates to a portable highway reconstruction and expansion flame cutting device and relates to the technical field of flame cutting devices, which comprises a profiling vehicle body, a lifting cutting frame, a profiling telescopic frame, cutting path guide wheels arranged at the front end in the running direction, a cutting torch mounting frame arranged at the rear end in the running direction, wherein the shaft center of the cutting path guide wheels, the flame nozzle of the cutting torch and the distance between the cutting torch and the guardrail are always kept consistent during the cutting process; when the bolt joint protrudingly arranged on the guardrail hinders the synchronous movement of the blocking plate along with the vehicle, the sliding block together with the joint identification mechanism drags and slides in the transverse sliding groove, the profiling vehicle body of the application can take the corrugated guardrail to be cut as a track, can perform profiling cutting movement according to the cross section shape of the guardrail under the guidance of the cutting path guide wheels, can accurately identify the position of the bolt joint on the guardrail, and greatly improves the cutting efficiency and the stability of the cutting process.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of flame cutting device, in particular to a portable highway reconstruction and expansion flame cutting device. BACKGROUND

[0002] The flame cutting device is a device that uses high-temperature flame (such as oxygen-acetylene flame) to make metal burn in oxygen flow and blow away slag, thereby realizing cutting. It has been widely used in the field of cutting of metal materials;

[0003] At the same time, in the reconstruction and expansion project of the highway, the original guardrails usually need to be cut and removed, but the existing guardrail cutting method is usually manual cutting, which has low cutting efficiency and the dust and sparks generated during the cutting process can cause harm to the human body. Especially for the expansion and removal work of the highway of dozens or even hundreds of kilometers, a large amount of labor is needed, and there is a certain construction risk.

[0004] Therefore, a high-speed guardrail cutting machine with publication number "CN107442839A" is disclosed in the prior art, a reduction drive mechanism, a support and a clamp are sequentially fixed to the workbench along the length direction of the workbench, the reduction drive mechanism is used to drive the support rod to approach or move away from the support; the cutting machine frame is provided with a protruding column, a first through hole and a second through hole along the circumferential direction thereof, the end of the support rod away from the reduction drive mechanism is rotatably sleeved with the protruding column, a rotating shaft rotating about an axis perpendicular to the cutting machine frame is arranged in the first through hole, and a first transmission wheel disc and a cutting piece are sequentially sleeved with the rotating shaft on the same side of the cutting machine frame; the rotating shaft of the high-speed motor sequentially penetrates the support and the second through hole, and a second transmission wheel disc is sleeved with the rotating shaft on the same side of the first transmission wheel disc relative to the cutting machine frame, and a belt is sleeved with the first transmission wheel disc and the second transmission wheel disc. The high-speed guardrail cutting machine can efficiently and quickly cut the high-speed guardrail.

[0005] However, the above-mentioned device still has obvious defects in the use process: the above-mentioned device fixes and installs the cutting machine on the guardrail through the workbench and the clamp to cut the guardrail, but the installation and disassembly process of the above-mentioned device still needs manual operation, in addition, manual operation is needed for auxiliary operation during the cutting process, the cutting efficiency is even lower than that of manual cutting operation with a handheld cutting machine, the practicability is poor, it is not suitable for cutting operation of long-distance guardrails, and the above-mentioned device cannot identify the cutting position. The high-speed guardrail cutting in the prior art is usually manually segmented cutting of the guardrail, since the high-speed guardrail is installed on the stand column through bolts, manual disassembly and assembly of the bolts are needed after segmented cutting, and finally the guardrail is disassembled and recycled from the stand column. This kind of cutting and disassembly method still needs a large amount of manpower, which is not conducive to efficient removal operation of the guardrail. SUMMARY

[0006] Based on this, it is necessary to provide a portable highway reconstruction and expansion flame cutting device in view of the shortcomings of the prior art.

[0007] To achieve the above object, the present application provides the following technical scheme:

[0008] A portable highway reconstruction and expansion flame cutting device comprises:

[0009] A profiled vehicle body is adapted to the cross-sectional shape of the guardrail and is provided with a traveling mechanism traveling along the length direction of the guardrail;

[0010] A lifting cutting frame is movably installed on a vertical sliding groove of the profiled vehicle body and can move up and down along the width direction of the guardrail;

[0011] A profiled cutting mechanism comprises:

[0012] A profiled telescopic frame is provided on the lifting cutting frame, and telescopic sleeves are fixedly installed on both sides of the profiled telescopic frame, and the telescopic sleeves on both sides are located at the front and rear ends of the traveling direction of the profiled vehicle body;

[0013] A cutting path guide wheel is provided at the front end of the traveling direction, and the cutting path guide wheel is movably installed on the first telescopic connecting rod, the first telescopic connecting rod is telescopically inserted into the telescopic sleeve at the front end, and is used to always abut against the inner side of the guardrail during cutting;

[0014] A cutting torch mounting frame is provided at the rear end of the traveling direction, and the cutting torch mounting frame is fixedly connected with the second telescopic connecting rod, the second telescopic connecting rod is telescopically inserted into the telescopic sleeve at the rear end, and the cutting torch mounting frame is fixedly installed with a cutting torch for flame cutting; wherein,

[0015] The distance between the shaft center of the cutting path guide wheel, the flame nozzle of the cutting torch and the guardrail is always kept consistent during cutting, so that the cutting path of the cutting torch is adapted to the cross-sectional shape of the guardrail; and,

[0016] A joint identification mechanism is connected with a sliding block through a rotating shaft, the sliding block is slidingly arranged in a transverse sliding groove arranged on the side of the profiled vehicle body close to the guardrail, the joint identification mechanism further has a blocking plate arranged away from the rotating shaft side, the blocking plate always abuts against the inner side of the guardrail during the traveling of the vehicle body, when the bolt joint protrudingly arranged on the guardrail hinders the synchronous movement of the blocking plate with the vehicle, the sliding block together with the joint identification mechanism slides in the transverse sliding groove;

[0017] When the blocking plate slides to the same vertical plane with the flame nozzle of the cutting torch, the limiting release mechanism arranged on the cutting torch mounting frame pushes the joint identification mechanism to rotate around the rotating shaft end, so that the blocking plate passes over the bolt joint and resets, at the same time, the profiling vehicle body stops running and starts vertical cutting movement, at this time the cutting path of the cutting torch passes through the bolt joint, so that the cut-off guardrail loses the connection with the bolt joint and falls to the ground under the action of gravity.

[0018] Preferably, a lifting driving mechanism for driving the lifting cutting frame to move is arranged on the profiling vehicle body, and the lifting driving mechanism is a worm gear reduction motor, a driving gear is fixedly installed at the power output end of the worm gear reduction motor, and a tooth groove corresponding to the driving gear is arranged on the lifting cutting frame, so that the lifting cutting frame is driven to move up and down through the rotation of the worm gear reduction motor.

[0019] Preferably, an extrusion spring is arranged in the telescopic sleeve, and the extrusion spring is connected with the first telescopic connecting rod and the second telescopic connecting rod respectively, so as to push the cutting path guide wheel and the cutting torch to extend outward under the action of no external force.

[0020] Preferably, the first telescopic connecting rod and the second telescopic connecting rod are fixedly connected through the C-shaped connecting frame, so that the first telescopic connecting rod and the second telescopic connecting rod keep synchronous telescopic movement.

[0021] Preferably, the running mechanism arranged on the profiling vehicle body comprises a abutting wheel group on the inner side of the guardrail and a clamping wheel group on the outer side of the guardrail, and the abutting wheel group and the clamping wheel group are both provided with a cutting path guide wheel matched with the cross-sectional shape of the guardrail, so as to clamp the profiling vehicle body on the guardrail from the inner and outer sides of the guardrail through the cutting path guide wheel.

[0022] Preferably, the abutting wheel group is composed of four groups of rotating shaft frames and magnetic profiling wheels, the rotating shaft frame is movably installed on the assembly seat arranged on the inner side of the profiling vehicle body, the assembly seat is installed in the pulley groove arranged on the inner side of the profiling vehicle body, and a torsion spring is further arranged on the side connected with the assembly seat, so as to push the magnetic profiling wheel to abut against the inner side of the guardrail.

[0023] Preferably, the clamping wheel group is composed of a telescopic frame and a clamping profiling wheel, the telescopic frame is movably inserted into the telescopic hole arranged above the profiling vehicle body, a traction spring is arranged in the telescopic hole to pull the telescopic frame to the side close to the profiling vehicle body, the clamping profiling wheel abuts against the outer side of the guardrail through the traction spring, a running motor is further arranged on the wheel shaft of the clamping profiling wheel to drive the clamping profiling wheel to rotate, and the running motor drives the profiling vehicle body to move along the length direction of the guardrail.

[0024] Preferably, the pivot end of the joint recognition mechanism is also provided with a torsion spring on the side of the slider installation, and the torsion spring is used to push the blocking plate to keep abutting against the inner side of the guardrail under no external force.

[0025] Preferably, the limiting release mechanism comprises a movable magnetic block and a fixed magnetic block, the movable magnetic block is fixedly installed on the side of the blocking plate away from the guardrail, and the fixed magnetic block is fixedly installed on the side of the cutting torch mounting frame close to the guardrail, when the cutting torch cutting nozzle and the bolt joint are in the same vertical plane during the dragging sliding process of the blocking plate blocked by the bolt joint, the rotation of the blocking plate around the pivot end is promoted by the adsorption of the fixed magnetic block to the movable magnetic block, so as to pass the bolt joint, and the slider is also provided with a reset spring, which is used to reset the blocking plate after passing the bolt joint.

[0026] Preferably, the pivot end of the joint recognition mechanism is also provided with a toggle block, and a microswitch corresponding to the toggle block is opened on the slider, during the rotation of the movable magnetic block by the adsorption of the fixed magnetic block, the toggle block contacts the microswitch, so that the parking instruction and the flame cutting instruction are sent through the profiled vehicle built-in main control MCU.

[0027] Compared with the prior art, the present application has the following advantages:

[0028] 1. The profiled vehicle of the present application can take the corrugated guardrail to be cut as a track, so that it no longer needs to be additionally installed with an external track for use, greatly improving the tracking property of the device and ensuring the stability of the cutting process.

[0029] 2. The cutting torch of the present application can perform profiled motion according to the cross-sectional shape of the guardrail under the guidance of the cutting path guide wheel, effectively preventing the flame nozzle of the cutting torch from touching the guardrail during displacement, while also being able to maintain the direct cutting distance of the flame nozzle from the guardrail, thereby ensuring the smooth progress of the cutting process.

[0030] 3. The present application can also accurately identify the position of the bolt joint on the guardrail and guide the cutting torch to perform flame cutting operation in the vertical plane passing through the bolt joint, which makes the cutting and disassembly process of the guardrail proceed synchronously, further saving the disassembly step after cutting, and further improving the construction efficiency.

[0031] The profiled vehicle of the present application can take the corrugated guardrail to be cut as a track, and can perform profiled cutting motion according to the cross-sectional shape of the guardrail under the guidance of the cutting path guide wheel, and can also accurately identify the position of the bolt joint on the guardrail, greatly improving the cutting efficiency and the stability of the cutting process. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 The profiled vehicle of the present application is installed in the front of the guardrail.

[0033] Figure 2 Figure 1 is a schematic view of the blocking plate blocked by the bolt joint and the partial structure section of the present application;

[0034] Figure 3 Figure 2 is a schematic view of the profiled vehicle body installed on the back side of the guardrail of the present application;

[0035] Figure 4 Figure 3 is a schematic view of the overall structure of the present application;

[0036] Figure 5 Figure 4 is a schematic view of the overall structure disassembled of the present application.

[0037] In the figure: 1 profiled vehicle body, 2 guardrail, 3 lifting cutting frame, 4 profiled telescopic frame, 5 telescopic sleeve, 6 cutting path guide wheel, 7 first telescopic connecting rod, 8 cutting torch mounting frame, 9 second telescopic connecting rod, 10 cutting torch, 11 sliding block, 12 transverse sliding groove, 13 blocking plate, 14 bolt joint, 15 worm gear reduction motor, 16 driving gear, 17 C-shaped connecting frame, 18 rotating shaft frame, 19 magnetic profiled wheel, 20 assembly seat, 21 torsion spring, 22 telescopic frame, 23 clamping profiled wheel, 24 telescopic hole, 25 movable magnetic block, 26 fixed magnetic block, 27 return spring, 28 push block, 29 micro switch. DETAILED DESCRIPTION

[0038] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below. In the following description, a lot of specific details are set forth in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, therefore the present application is not limited to the specific embodiments disclosed below.

[0039] In the description of the present application, it should be understood that if these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application.

[0040] In addition, if there are these terms "first", "second", these terms are only for the purpose of description, and can not be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined as "first", "second" can be explicitly or implicitly included at least one feature. In the description of the present application, if the term "a plurality of" appears, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified.

[0041] In the present application, unless otherwise explicitly specified and limited, if there are terms "installation", "connection", "connection", "fixing" and the like, these terms should be broadly understood. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0042] In the present application, unless otherwise explicitly specified and limited, if there are similar descriptions such as "first feature on" or "below" the second feature, the meaning can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0043] It should be noted that if an element is referred to as "fixed to" or "provided to" another element, it can be directly on another element or there can be a middle element. If an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. If there is, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are only for the purpose of description, and do not represent the only implementation.

[0044] Please refer to Figures 1-5 The present application provides technical solutions:

[0045] Embodiment one:

[0046] A portable highway reconstruction and expansion flame cutting device, comprising:

[0047] The profiled vehicle body 1 is adapted to the cross-sectional shape of the guardrail 2 and is provided with a traveling mechanism that travels along the length direction of the guardrail 2;

[0048] The lifting cutting frame 3 is movably mounted on the vertical sliding groove of the profiled vehicle body 1 and can move up and down along the width direction of the guardrail 2;

[0049] The profiled cutting mechanism comprises:

[0050] The profiled telescopic frame 4 is provided on the lifting cutting frame 3, and telescopic sleeves 5 are fixedly installed on both sides of the profiled telescopic frame 4, and the telescopic sleeves 5 on both sides are respectively located at the front and rear ends of the profiled vehicle body 1 in the traveling direction;

[0051] The cutting path guide wheel 6 is provided at the front end in the traveling direction, and the cutting path guide wheel 6 is movably mounted on the first telescopic connecting rod 7, the first telescopic connecting rod 7 is telescopically inserted into the telescopic sleeve 5 at the front end, and is used to always abut against the inner side of the guardrail 2 during cutting;

[0052] The cutting torch mounting frame 8 is provided at the rear end in the traveling direction, the cutting torch mounting frame 8 is fixedly connected with the second telescopic connecting rod 9, the second telescopic connecting rod 9 is telescopically inserted into the telescopic sleeve 5 at the rear end, and the cutting torch 10 for flame cutting is fixedly mounted on the cutting torch mounting frame 8; wherein,

[0053] The distance between the shaft center of the cutting path guide wheel 6 and the flame jet of the cutting torch 10 and the guardrail 2 is always kept consistent during cutting, so that the cutting path of the cutting torch 10 is adapted to the cross-sectional shape of the guardrail 2; and,

[0054] The joint identification mechanism is connected with the sliding block 11 through a rotating shaft, the sliding block 11 is slidingly arranged in the transverse sliding groove 12 provided on the side of the profiled vehicle body 1 close to the guardrail 2, the joint identification mechanism further has a blocking plate 13 provided away from the rotating shaft side, the blocking plate 13 always abuts against the inner side of the guardrail 2 during the vehicle body traveling, when the bolt joint 14 protrusively provided on the guardrail 2 hinders the synchronous movement of the blocking plate 13 with the vehicle, the sliding block 11 and the joint identification mechanism slide in the transverse sliding groove 12;

[0055] When the blocking plate 13 slides to the same vertical plane as the flame jet of the cutting torch 10, the limiting release mechanism provided on the cutting torch mounting frame 8 pushes the joint identification mechanism to rotate around the rotating shaft end, so that the blocking plate 13 passes over the bolt joint 14 and resets, at the same time, the profiled vehicle body 1 stops traveling and starts vertical cutting movement, at this time, the cutting path of the cutting torch 10 passes through the bolt joint 14, so that the cut-off guardrail 2 loses the connection with the bolt joint 14 and falls to the ground under the action of gravity.

[0056] In this embodiment, the profiled vehicle body 1 is used as the main structure installation mechanism, and its own form is adapted to the cross-sectional form of the guardrail 2, so that the profiled vehicle body 1 can effectively fit the opposite side of the guardrail 2, and a traveling mechanism for driving the profiled vehicle body 1 to move on the guardrail 2 is arranged on the profiled vehicle body 1, the traveling mechanism includes abutting wheel groups on the inner side of the guardrail 2 and clamping wheel groups on the outer side of the guardrail, and the abutting wheel groups and the clamping wheel groups are both provided with cutting path guide wheels adapted to the cross-sectional form of the guardrail 2, as shown in the accompanying drawings Figure 4 and the accompanying drawings Figure 5 The abutting wheel groups are composed of four groups of rotating shaft frames 18 and magnetic profiled wheels 19, the four groups of abutting wheel groups are symmetrically installed, the rotating shaft frames 18 are movably installed on the assembly seats 20 arranged on the inner side of the profiled vehicle body 1, the assembly seats 20 are installed in the pulley grooves arranged on the inner side of the profiled vehicle body 1, and torsion springs 21 are further arranged on the side of the rotating shaft frames 18 connected with the assembly seats 20, the torsion springs 21 are used to push the magnetic profiled wheels 19 to abut against the inner side of the guardrail 2, wherein the magnetic profiled wheels 19 can be attracted to the guardrail 2 by the magnetic force of the magnetic profiled wheels 19, so as to ensure the stability of the profiled vehicle body 1 during the traveling process, the clamping wheel groups are composed of telescopic frames 22 and clamping profiled wheels 23, the telescopic frames 22 are movably inserted into the telescopic holes 24 arranged above the profiled vehicle body 1, traction springs are arranged in the telescopic holes 24 to pull the telescopic frames 22 to the side close to the profiled vehicle body 1, so that the clamping profiled wheels 23 abut against the outer side of the guardrail 2, and traveling motors are further arranged on the shafts of the clamping profiled wheels 23 to drive the clamping profiled wheels 23 to rotate, so that the profiled vehicle body 1 can travel along the length direction of the guardrail 2 by the arrangement of the traveling motors, and the profiled vehicle body 1 can be installed on the guardrail 2 by the clamping of the wheel groups on both sides, the traveling motor in this embodiment is a stepping motor, which is controlled to move by the main control MCU arranged in the profiled vehicle body 1, and when the device needs to be disassembled, the telescopic frame 22 is only needed to be pulled to extend to the outside of the telescopic hole 24, so that the whole device can be taken off from the guardrail 2, so that the device is more portable and convenient to carry;

[0057] Referring to the accompanying drawings Figure 1 A vertical sliding groove is arranged on the side of the profiled vehicle body 1 away from the guardrail 2, and a lifting cutting frame 3 is arranged in the vertical sliding groove in a lifting manner, and the lifting driving mechanism of the lifting cutting frame 3 is a worm gear reduction motor 15, due to the reverse self-locking characteristics of the worm gear mechanism, the worm gear reduction motor 15 can keep the lifting cutting frame 3 in a stable resting state in a non-working state, and the worm gear reduction motor 15 is engaged with the tooth grooves arranged on the lifting cutting frame 3 through a driving gear 16, so that the lifting cutting frame 3 can move up and down during the reciprocating rotation of the driving gear 16;

[0058] The profiling cutting mechanism is arranged on the lifting cutting frame 3, and specifically includes a profiling telescopic frame 4, a cutting path guide wheel 6 and a cutting torch mounting frame 8. The profiling telescopic frame 4 is fixedly connected with the lifting cutting frame 3 and keeps synchronous movement. The cutting path guide wheel 6 and the cutting torch mounting frame 8 keep synchronous movement. The two are respectively inserted into the telescopic sleeves 5 on both sides of the profiling telescopic frame 4 through the first telescopic connecting rod 7 and the second telescopic connecting rod 9. The first telescopic connecting rod 7 and the second telescopic connecting rod 9 are further fixedly connected with the C-shaped connecting frame 17, thereby ensuring the synchronous movement of the two. The telescopic sleeves 5 are all provided with extrusion springs. The cutting path guide wheel 6 and the cutting torch mounting frame 8 are extended outward through the pushing of the extrusion springs. The cutting path guide wheel 6 always abuts against the inner side of the guardrail 2 during the cutting process. The flame nozzle of the cutting torch 10 installed on the cutting torch mounting frame 8 is located at the position of the axis extension line of the cutting path guide wheel 6. Such a design is to provide path guidance for the cutting of the cutting torch 10 through the profiling movement of the cutting path guide wheel 6 on the surface of the guardrail 2. On the one hand, it prevents the flame nozzle of the cutting torch 10 from touching the guardrail 2 and causing damage. On the other hand, it can make the flame nozzle of the cutting torch 10 always keep a certain distance from the guardrail 2. In this way, it can better facilitate the spraying and cutting of the flame. The upper end of the cutting torch 10 is further provided with a connecting end head. The connecting end head is used to be connected with a gas cylinder through a pipeline. A ignition mechanism is further arranged at the flame nozzle of the cutting torch 10, thereby performing automatic extinguishing and ignition operation through the control of the built-in main control MCU of the profiling vehicle body 1.

[0059] Example two:

[0060] In order to make the cut-off guardrail 2 more convenient for recycling, the joint recognition mechanism is further arranged on the profiling vehicle body 1, one end of which is provided with a blocking plate 13, and the other end is movably installed on the sliding block 11 through a rotating shaft. The blocking plate 13 is also profiled according to the arc surface structure of the inner side of the guardrail 2, so that it can fully fit the inner side of the guardrail 2. During the movement of the profiling vehicle body 1, the blocking plate 13 moves together with it. When the blocking plate 13 contacts the bolt joint 14 arranged on the guardrail 2, the bolt joint 14 hinders the synchronous movement of the blocking plate 13 with the vehicle, and the sliding block 11 drags and slides in the transverse sliding groove 12 together with the joint recognition mechanism. At this time, the position of the blocking plate 13 is the position of the bolt joint 14. Knowing this position, the cutting torch 10 can be guided to cut in this vertical plane. On the one hand, the guardrail 2 can be cut during cutting, and on the other hand, the assembly bolt for fixing the guardrail 2 can also be cut. Thus, the cut-off guardrail 2 can automatically fall off without manual disassembly. Therefore, when the cutting torch 10 of the profiling vehicle body 1 moves to the limiting position of the blocking plate 13, the profiling vehicle body 1 stops moving. At this time, the vertical cutting program is started to cut the guardrail 2. In order to prevent the blocking plate 13 from being damaged by the cutting torch 10, when the cutting torch 10 reaches the cutting position, the blocking plate 13 is pushed by the limiting release mechanism to pass over the bolt joint 14 and reset.

[0061] Embodiment three:

[0062] In this embodiment, the limiting release mechanism includes a movable magnetic block 25 and a fixed magnetic block 26. The movable magnetic block 25 is fixedly installed on the side of the blocking plate 13 away from the guardrail 2, and the fixed magnetic block 26 is fixedly installed on the side of the cutting torch mounting bracket 8 close to the guardrail 2. During the dragging sliding process of the blocking plate 13 hindered by the bolt joint 14, when the cutting nozzle of the cutting torch 10 is in the same vertical plane as the bolt joint 14, the blocking plate 13 is rotated around the rotating shaft end to pass over the bolt joint 14 by the adsorption of the fixed magnetic block 26 to the movable magnetic block 25. The sliding block is further provided with a reset spring 27, which is used to reset the blocking plate 13 after passing over the bolt joint 14.

[0063] In order to smoothly mark the cutting position, the rotating shaft end of the joint recognition mechanism is further provided with a toggle block 28, and the sliding block 11 is correspondingly provided with a micro switch 29 which is movably matched with the toggle block 28. During the rotating process of the movable magnetic block 25 adsorbed by the fixed magnetic block 26, the toggle block 28 contacts the micro switch 29, so that the stop command and the flame cutting command are sent through the built-in main control MCU of the profiling vehicle body 1, thereby accurately implementing the cutting movement.

[0064] Working principle:

[0065] The worker installs the profiling car body 1 on the guardrail to be cut, and then connects the connecting end of the cutting torch 10 with the gas supply bottle through the pipeline, which can be installed on the transport vehicle that can follow the profiling car body 1 to move in the form of manual control or unmanned driving. The profiling car body 1 moves along the length direction of the guardrail 2 in the rotation process of the clamping profiling wheel. When the blocking plate 13 is blocked by the bolt joint 14, the blocking plate 13 and the sliding block 11 no longer move synchronously with the profiling car body 1. When the cutting torch 10 moves to the position where the blocking plate 13 is blocked, the blocking plate 13 is reset beyond the bolt joint 14 under the pushing of the position releasing mechanism. At this time, the micro switch 29 is pressed by the undulating block 28 to trigger the main control MCU to send a stop moving instruction to the profiling car body 1. At this time, the flame cutting program is entered, the cutting torch 10 is ignited through the automatic ignition device, and the worm reduction motor drives the lifting cutting frame 3 to move up and down from bottom to top or from top to bottom. In this process, since the cross section of the guardrail 2 is in a corrugated shape, the cutting path guide wheel 6 always abuts against the inner side of the guardrail 2, thereby driving the first telescopic connecting rod 7 to move telescopically. The first telescopic connecting rod 7 synchronously drives the second telescopic connecting rod 9 to move telescopically through the C-shaped connecting frame 17, thereby enabling the flame jet head of the cutting torch 10 to follow the profiling car body 1 in the process of the cutting path guide wheel 6, ensuring that the flame of the cutting torch 10 can smoothly cut the guardrail 2. In the cutting process, the cutting torch 10 can also cut the assembly bolts that fix the guardrail 2. Therefore, the guardrail 2 that loses support will fall to the ground under the action of gravity. After the cutting is completed, the profiling car body 1 continues to move along the length direction of the guardrail 2 under the control of the main control MCU, and the positioning and flame cutting operations are repeated.

[0066] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the application. It should be noted that, for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A portable flame cutting device for highway reconstruction and expansion, characterized in that, include: The contoured vehicle body (1) is adapted to the cross-sectional shape of the guardrail (2) and is provided with a traveling mechanism that travels along the length of the guardrail (2). The lifting cutting frame (3) is movably installed on the vertical slide groove opened on the contour vehicle body (1) and can move up and down along the width direction of the guardrail (2); The contour cutting mechanism includes: The contour telescopic frame (4) is set on the lifting cutting frame (3). Telescopic sleeves (5) are fixedly installed on both sides of the contour telescopic frame (4). The telescopic sleeves (5) on both sides are located at the front and rear ends of the contour vehicle body (1) in the direction of travel. The cutting path guide wheel (6) is set at the front end of the direction of travel. The cutting path guide wheel (6) is movably installed on the first telescopic link (7). The first telescopic link (7) is telescopically inserted into the telescopic sleeve (5) at the front end, and is used to always abut against the inner side of the guardrail (2) during the cutting process. A torch mounting bracket (8) is located at the rear end of the travel direction. The torch mounting bracket (8) is fixedly connected to a second telescopic link (9). The second telescopic link (9) is telescopically inserted into a telescopic sleeve (5) at the rear end. A torch (10) for flame cutting is fixedly mounted on the torch mounting bracket (8). The axis of the cutting path guide wheel (6), the distance between the flame nozzle of the cutting torch (10) and the guardrail (2) remains consistent throughout the cutting process, ensuring that the cutting path of the cutting torch (10) adapts to the cross-sectional shape of the guardrail (2); and, The connector identification mechanism has one end connected to the slider (11) via a rotating shaft. The slider (11) is slidably set in a transverse groove (12) opened on the side of the contoured vehicle body (1) near the guardrail (2). The connector identification mechanism also has a barrier plate (13) set away from the rotating shaft. The barrier plate (13) always abuts against the inside of the guardrail (2) during the vehicle's movement. When the bolt joint (14) protruding on the guardrail (2) prevents the barrier plate (13) from moving synchronously with the vehicle, the slider (11) together with the connector identification mechanism slides in the transverse groove (12). When the barrier plate (13) slides to the same vertical plane as the flame nozzle of the cutting torch (10), the limit release mechanism set on the cutting torch mounting frame (8) pushes the joint identification mechanism to rotate around the shaft end, so that the barrier plate (13) passes over the bolt joint (14) and resets. At the same time, the contour vehicle body (1) stops moving and starts vertical cutting. At this time, the cutting path of the cutting torch (10) passes through the bolt joint (14), so that the cut guardrail (2) loses its connection with the bolt joint (14) and falls to the ground under the action of gravity.

2. The portable flame cutting device for highway reconstruction and expansion according to claim 1, characterized in that: The contoured vehicle body (1) is equipped with a lifting drive mechanism that drives the lifting cutting frame (3) to perform cutting motion. The lifting drive mechanism is a worm gear reducer motor (15). The power output end of the worm gear reducer motor (15) is fixedly equipped with a drive gear (16). The lifting cutting frame (3) is provided with a tooth groove that meshes with the drive gear (16), so that the lifting cutting frame (3) is driven to perform lifting motion by the rotation of the worm gear reducer motor (15).

3. The portable flame cutting device for highway reconstruction and expansion according to claim 1, characterized in that: Each telescopic sleeve (5) is equipped with a compression spring, which is connected to the first telescopic link (7) and the second telescopic link (9) respectively. The compression spring is used to push the cutting path guide wheel (6) and the cutting torch (10) to extend outward without external force.

4. The portable flame cutting device for highway reconstruction and expansion according to claim 3, characterized in that: The first telescopic link (7) and the second telescopic link (9) are fixedly connected by a C-shaped connecting bracket (17) so that the first telescopic link (7) and the second telescopic link (9) maintain synchronous telescopic movement.

5. A portable flame cutting device for highway reconstruction and expansion according to claim 4, characterized in that: The traveling mechanism on the contour vehicle body (1) includes a backing wheel group on the inside of the guardrail (2) and a clamping wheel group on the outside of the guardrail. Both the backing wheel group and the clamping wheel group are equipped with cutting path guide wheels that are adapted to the cross-sectional shape of the guardrail (2). The contour vehicle body (1) is installed on the guardrail by clamping the guardrail (2) from both the inside and outside sides through the cutting path guide wheels.

6. The portable flame cutting device for highway reconstruction and expansion according to claim 5, characterized in that: The abutment wheel assembly consists of four sets of rotating shaft frames (18) and magnetic contouring wheels (19). The rotating shaft frames (18) are movably mounted on the mounting base (20) provided inside the contouring vehicle body (1). The mounting base (20) is installed in the pulley groove opened inside the contouring vehicle body (1). A torsion spring (21) is also provided on the side where the rotating shaft frame (18) is connected to the mounting base (20). The torsion spring (21) is used to push the magnetic contouring wheels (19) against the inside of the guardrail (2).

7. A portable flame cutting device for highway reconstruction and expansion according to claim 6, characterized in that: The clamping wheel assembly consists of a telescopic frame (22) and a clamping contour wheel (23). The telescopic frame (22) is movably inserted into a telescopic hole (24) opened above the contour vehicle body (1). A traction spring is provided in the telescopic hole (24) to pull the telescopic frame (22) closer to the contour vehicle body (1). The traction spring causes the clamping contour wheel (23) to abut against the outside of the guardrail (2). A travel motor is also provided on the axle of the clamping contour wheel (23) to drive its rotation. The travel motor drives the contour vehicle body (1) to move along the length of the guardrail (2).

8. A portable flame cutting device for highway reconstruction and expansion according to claim 1 or 7, characterized in that: The rotating shaft end of the connector identification mechanism is also provided with a torsion spring (21) on the same side as the slider (11). The torsion spring (21) is used to push the barrier plate (13) to keep it against the inside of the guardrail (2) without external force.

9. A portable flame cutting device for highway reconstruction and expansion according to claim 8, characterized in that: The limit release mechanism includes a movable magnetic block (25) and a fixed magnetic block (26). The movable magnetic block (25) is fixedly installed on the side of the barrier plate (13) away from the guardrail (2), and the fixed magnetic block (26) is fixedly installed on the side of the torch mounting frame (8) close to the guardrail (2). During the process of the barrier plate (13) being dragged by the bolt joint (14), when the cutting nozzle of the torch (10) and the bolt joint (14) are on the same vertical plane, the fixed magnetic block (26) attracts the movable magnetic block (25) to cause the barrier plate (13) to rotate around the shaft end and pass over the bolt joint (14). A reset spring (27) is also provided on the slider. The reset spring (27) is used to pull the barrier plate (13) to reset after passing over the bolt joint (14).

10. A portable flame cutting device for highway reconstruction and expansion according to claim 9, characterized in that: The rotating shaft end of the connector identification mechanism is also provided with a toggle block (28). The slider (11) is provided with a micro switch (29) that is movable and cooperates with the toggle block (28). During the process of the movable magnetic block (25) being attracted and rotated by the fixed magnetic block (26), the toggle block (28) contacts the micro switch (29), thereby sending a parking command and a flame cutting command through the main control MCU built into the contour vehicle body (1).

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