Cutting device for special vehicle refitting

Abstract

The invention belongs to the technical field of laser cutting equipment, and particularly relates to a cutting device for special vehicle refitting, the cutting device comprises a laser cutting equipment main body, two side walls of a workbench of the laser cutting equipment main body are both provided with through channels, and two symmetrically arranged vertical guide rods are fixedly connected in each through channel. According to the cutting device for special vehicle refitting, through a switching structure of the double lifting rods and the Z-shaped transmission channel, alternate use of the two sets of supporting tooth racks is achieved, when one set of supporting tooth racks need to be replaced due to abrasion, the other set of supporting tooth racks can be driven by the driving motor to rapidly ascend to the working position, and the working efficiency is improved. Shutdown for waiting for long-time replacement is not needed, the time consumed by single-time switching is shortened to 2-3 minutes from traditional 30-60 minutes, and the cutting continuity of special vehicle refitting is greatly improved; meanwhile, the support tooth rack is matched with the mounting plate through the inverted convex sleeve groove, and the guide design of the manual pull rod and the horizontal part is combined, so that an old part can be directly drawn out and a new part can be directly inserted during replacement.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of laser cutting equipment, and particularly relates to a cutting device for special vehicle modification. BACKGROUND

[0002] In the process of special vehicle modification, laser cutting processing is required for core components such as chassis, frame and carriage skeleton according to different functional requirements. The processing objects have the characteristics of various materials (high-strength alloy steel plate, wear-resistant cast iron, aluminum alloy, etc.), large plate thickness (usually 8-30 mm) and high cutting precision (±0.1 mm), which puts strict requirements on the support stability and operation continuity of the cutting device.

[0003] The existing laser cutting device has the following technical pain points in the scene of special vehicle modification:

[0004] Low switching efficiency of the support structure: the support pieces of the traditional cutting workbench are mostly fixed welding or bolt connection structures. When the support teeth are worn due to long-term bearing of thick plate cutting (causing plate positioning deviation), the device needs to be stopped and a plurality of fasteners need to be disassembled for replacement, which takes 30-60 minutes for single replacement, seriously affecting the continuity of the modification production line.

[0005] Therefore, there is an urgent need for a cutting device that can realize rapid switching of the support structure to meet the efficient and precise requirements of special vehicle modification.

[0006] The information disclosed in this BACKGROUND section is only intended to increase an understanding of the general background of the application and should not be construed as a recognition of the prior art against which the application is defined. SUMMARY

[0007] The purpose of the present application is to provide a cutting device for special vehicle modification to solve the problems of the prior art.

[0008] In order to achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0009] A cutting device for special vehicle modification, comprising a laser cutting equipment main body, a through channel is formed in the wall on both sides of the workbench of the laser cutting equipment main body, two symmetrical vertical guide rods are fixedly connected in the through channel, an lifting rod is slidably sleeved on the outer side of the two vertical guide rods in each through channel, one end of the lifting rod is connected to the through channel through a driving device, the two lifting rods are distributed one above the other, a support tooth strip is installed between the two lifting rods and the through channel through a switching assembly, a clamping assembly is further connected between the support tooth strip and the switching assembly, and a splash-proof assembly is installed on the switching assembly.

[0010] The driving device comprises a screw rod threadedly connected to the lifting rod, a top end of the screw rod is rotationally connected to the through channel, and a bottom end of the screw rod is fixedly connected to an output shaft of a driving motor, and the driving motor is fixedly connected to an inner bottom wall of the through channel.

[0011] Preferably, the switching assembly comprises a plurality of equidistantly arranged transmission skeletons movably attached to the inner side of the lifting rod, top and bottom ends of the transmission skeletons are fixedly connected to the through channels, vertical sections of the transmission skeletons are Z-shaped structures, arrangement directions of the transmission skeletons in the two through channels are opposite, Z-shaped transmission channels are formed in the transmission skeletons, guide columns are movably attached to the transmission channels, cross-shaped structures are formed in the guide columns, I-shaped structures are formed in vertical sections of outer ends of the guide columns, the outer ends of the guide columns are fixedly connected to sliding blocks, the sliding blocks are slidably connected to sliding grooves formed in the lifting rod, a certain size of space is reserved between the transmission skeletons in each through channel, the space is required for subsequent downward movement of the support toothed strips to be replaced, diameters of middle portions of the guide columns are equal to inner widths of the transmission channels, the sliding blocks are prevented from moving left and right in the sliding grooves formed in the lifting rod, and the support stability of the support toothed strips is prevented from being affected.

[0012] Preferably, I-shaped structures are formed in vertical sections of inner ends of the guide columns, stop blocks are fixedly connected to edge positions of the guide columns away from the installation plates, the support toothed strips are movably attached to outer sides of the installation plates through I-shaped sleeve grooves formed in bottom ends of the support toothed strips, and the stop blocks are used to block the support toothed strips after being movably attached.

[0013] Preferably, horizontal portions are formed in top middle portions of the guide columns, top surfaces of the horizontal portions are flush with bottom end surfaces of the support toothed strips, the bottom end widths of the support toothed strips are smaller than the inner widths of the transmission channels, T-shaped manual pull rods are fixedly connected to one end of the support toothed strips away from the stop blocks, outer diameters of the manual pull rods are smaller than the inner widths of the transmission channels, when a group of support toothed strips is lowered to be separated from the top surface of the workbench, in order to facilitate extraction and replacement of the support toothed strips after being actively loosened from the clamping assembly, the support toothed strips can be directly pulled out of the corresponding transmission channels through the manual pull rods, and since the top surfaces of the horizontal portions are flush with the bottom end surfaces of the support toothed strips, and the bottom widths of the support toothed strips are smaller than the inner widths of the transmission channels, the loosened support toothed strips can be conveniently and quickly extracted and replaced.

[0014] Preferably, the cardan assembly comprises a reset spring plate fixed on one side wall of the mounting plate and close to the position of the guide column, the vertical section of the reset spring plate is in the shape of a sandglass, the outer end of the reset spring plate is fixed with a moving block, a plurality of equidistantly arranged first teeth are fixed on the side wall of the moving block towards the support tooth strip, a plurality of equidistantly arranged second teeth are fixed on the outer side of the support tooth strip, and when the plurality of first teeth and the plurality of second teeth are engaged, the support tooth strip is stably fixed on the outer side of the top of the mounting plate.

[0015] Preferably, the back middle part of the moving block is fixed with an arc-shaped block, the inner side of the transmission skeleton is fixed with a transmission rod at a position obliquely above the arc-shaped block, the bottom end of the transmission rod is provided with a second inclined surface matched with the arc-shaped block, after the arc-shaped block moves downward, the transmission rod no longer presses the arc-shaped block, and then under the rebounding action of the reset spring plate, the plurality of first teeth are quickly separated from the engagement of the plurality of second teeth, so that the support tooth strip can be actively released when moving down to the splash assembly, facilitating manual quick extraction and replacement, and conversely, when the arc-shaped block moves upward, it will be extruded by the second inclined surface at the bottom end of the transmission rod, so that the reset spring plate is deformed under pressure, and then the plurality of first teeth and the plurality of second teeth are engaged to realize the fixation of the support tooth strip.

[0016] Preferably, the two middle bending parts of the reset spring plate are provided with first weakening grooves, the two sides of the first weakening grooves are provided with second weakening grooves opened on the reset spring plate, and the inner side close to the moving block in the reset spring plate is fixed with a movable block, the other end of the movable block is sequentially movably penetrated through the reset spring plate and the mounting plate and is telescopically slid in the activity groove opened in the inner side of the mounting plate, and the movable block and the activity groove are arranged to ensure the stable movement of the moving block during the movement of the plurality of first teeth towards the plurality of second teeth.

[0017] Preferably, the splash assembly comprises a support column fixed on the inner side of the transmission skeleton, the outer side of the support column is rotatably connected with a turnover plate, and the top of the turnover plate is integrally formed with a splash plate, the splash plate can protect the replaced support tooth strip, avoiding that the splashes generated during laser cutting are left on the replaced support tooth strip to affect the subsequent use.

[0018] Preferably, the vertical section of the splash plate is in an arc-shaped structure, the bottom end of the turnover plate is integrally formed with a circular arc part, the bottom end of the mounting plate is provided with two symmetrically arranged first inclined surfaces, the first inclined surfaces are matched with the circular arc part, when the plurality of support tooth strips to be replaced are lowered, the bottom end of the mounting plate of the support tooth strips is pressed against the circular arc part of the bottom end of the turnover plate, so that the turnover plate drives the splash plate to turn over, and the replaced support tooth strips are protected and shielded.

[0019] Preferably, the outer side of the support column is fixedly connected with a blocking rod in an L-shaped cross-section structure, the blocking rod is used for limiting the turnover plate, the turnover plate is in an inclined state in an unprotected state, and the outer side surface of the turnover plate is movably lapped on the outer side of the blocking rod.

[0020] Compared with the prior art, the present application has the following beneficial effects:

[0021] (1) The cutting device for special vehicle modification of the present application realizes the alternate use of two groups of support tooth strips through the switching structure of "double lifting rods + Z-shaped transmission channel" - when one group of support tooth strips needs to be replaced due to wear, the other group of support tooth strips can be quickly lifted to the working position by driving the driving motor, without the need to stop for a long time to replace, the time consumption of single switching is shortened from 30-60 minutes to 2-3 minutes, and the cutting continuity of special vehicle modification is greatly improved; at the same time, the support tooth strips are matched with the mounting plate through the inverted convex sleeve groove, combined with the guide design of the manual pull rod and the horizontal part, the old part can be directly pulled out and the new part can be directly inserted during replacement, and the operation convenience is significantly improved.

[0022] (2) The clamping and loosening assembly realizes automatic locking and loosening through "reset spring + tooth cooperation + arc block - transmission rod linkage" - when the support tooth strips are lifted, the arc block is pressed by the second inclined surface of the transmission rod, the reset spring is deformed to drive the first tooth and the second tooth to be engaged, without the need for manual locking; when the support tooth strips are lowered, the arc block is separated from the pressing of the transmission rod, the reset spring rebounds to separate the teeth, and the loosening is automatically completed, reducing the manual intervention steps.

[0023] (3) The splash assembly realizes linkage through "mounting plate first inclined surface + turnover plate circular arc part" - when the support tooth strips to be replaced are lowered, the first inclined surface of the mounting plate will press against the circular arc part of the turnover plate, driving the splash plate to turn over to form an arc-shaped protective barrier above the support tooth strips, which can block the high-temperature splashes generated by laser cutting from adhering to the surface of the replaced support tooth strips, and can prevent the hands from being scratched by residual splashes during manual replacement, and the arc-shaped structure of the splash plate facilitates the natural sliding of the splashes, which can be cleaned after the splashes are concentrated, improving the maintenance convenience of the device. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a schematic diagram of the overall three-dimensional first perspective structure of the present application;

[0025] Figure 2 is the schematic diagram of the overall three-dimensional second perspective structure of the present application;

[0026] Figure 3 is the schematic diagram of the overall planar first perspective structure of the present application;

[0027] Figure 4 is the schematic diagram of the overall planar second perspective structure of the present application;

[0028] Figure 5 is the schematic diagram of the first perspective structure of the present application in the state after the support tooth strip is raised;

[0029] Figure 6 is the schematic diagram of the second perspective structure of the present application in the state after the support tooth strip is raised;

[0030] Figure 7 is the schematic diagram of the first perspective structure of the present application in the state after the support tooth strip is lowered;

[0031] Figure 8 is the schematic diagram of the second perspective structure of the present application in the state after the support tooth strip is lowered;

[0032] Figure 9 is the schematic diagram of the enlarged structure at A in the present application; Figure 6

[0033] Figure 10 is the schematic diagram of the enlarged structure at B in the present application; Figure 7

[0034] Main figure mark explanation:

[0035] 1, laser cutting equipment main body; 11, through channel; 13, lifting rod; 131, vertical guide rod; 132, screw rod; 133, driving motor; 14, transmission framework; 141, transmission channel; 142, guide column; 1421, horizontal part; 143, sliding block; 144, mounting plate; 1441, first inclined surface; 145, stop block; 15, support tooth strip; 151, manual pull rod; 2, splash blocking assembly; 21, turnover plate; 211, support column; 212, blocking rod; 22, circular arc part; 23, splash blocking plate; 3, clamping and loosening assembly; 31, transmission rod; 32, second inclined surface; 33, reset spring piece; 331, first weakening groove; 332, second weakening groove; 34, moving block; 341, first tooth; 342, second tooth; 35, movable block; 36, arc block. DETAILED DESCRIPTION

[0036] ​​The technical solutions of the patent application will be described clearly and completely below. Obviously, the described embodiments are part of the embodiments of the patent application, rather than all the embodiments. Based on the embodiments in the patent application, all other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the patent application.

[0037] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0038] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, terms such as "mounting", "connection", "connection" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; 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 connection between two elements inside. 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.

[0039] Referring to the drawings Figures 1-10 A cutting device for special vehicle modification, comprising a laser cutting device body 1, a through channel 11 is formed on the both side walls of the workbench of the laser cutting device body 1, two symmetrical vertical guide rods 131 are fixedly connected in the through channel 11, an elevating rod 13 is slidingly sleeved on the outer side of the two vertical guide rods 131 in each through channel 11, one end of the elevating rod 13 is connected to the through channel 11 through a driving device, the two elevating rods 13 are distributed one above the other, the two elevating rods 13 are provided with a support toothed strip 15 through a switching assembly between the through channel 11, a clamping assembly 3 is further connected between the support toothed strip 15 and the switching assembly, and a splash-proof assembly 2 is installed on the switching assembly.

[0040] The driving device comprises a screw rod 132 threadedly connected on the elevating rod 13, the top end of the screw rod 132 is rotatably connected in the through channel 11, and the bottom end of the screw rod 132 is fixedly connected to the output shaft of a driving motor 133, and the driving motor 133 is fixedly connected to the inner bottom wall of the through channel 11.

[0041] By starting one of the drive motors 133, the plurality of support tooth strips 15 installed on the lifting rod 13 in the corresponding through channel 11 are lowered through the switching assembly, and after being lowered, the splash guard assembly 2 shields the plurality of support tooth strips 15, and then, by starting the other drive motor 133, the plurality of support tooth strips 15 installed on the lifting rod 13 in the corresponding through channel 11 are raised through the switching assembly, and the splash guard assembly 2 can be automatically unfolded, and the plurality of support tooth strips 15 can be automatically locked after being raised, so as to laser cut the chassis plate of the special vehicle.

[0042] Further, as Figures 1-10As shown, the switching assembly includes a plurality of equidistantly arranged transmission skeletons 14 movably attached to the inner side of the lifting rod 13, the top end and the bottom end of the transmission skeleton 14 are fixedly connected in the through channel 11, the vertical section of the transmission skeleton 14 is a Z-shaped structure, the arrangement direction of the transmission skeleton 14 in the two through channels 11 is opposite, the transmission skeleton 14 is provided with a Z-shaped transmission channel 141, the transmission channel 141 movably connects a guide column 142, the cross section of the guide column 142 is a cross-shaped structure, the outer end of the guide column 142 is fixedly connected with a slide block 143 with an I-shaped structure, the slide block 143 is slidably connected in the sliding groove of the lifting rod 13, a certain size space is reserved between the transmission skeletons 14 in each through channel 11, which is to meet the space required for the subsequent disassembly and replacement of the support toothed strip 15, the diameter of the middle part of the guide column 142 is equal to the inner width of the transmission channel 141, which avoids the left and right movement of the slide block 143 in the sliding groove of the lifting rod 13, and at the same time avoids affecting the support stability of the support toothed strip 15, the inner end of the guide column 142 is fixedly connected with an installation plate 144 with an inverted convex-shaped structure, the edge of the installation plate 144 away from the guide column 142 is fixedly connected with a stop block 145, the support toothed strip 15 is movably provided outside the installation plate 144 through the inverted convex-shaped sleeve groove at the bottom end, the stop block 145 is used to block the support toothed strip 15 after being sleeved, the top middle part of the guide column 142 is provided with a horizontal part 1421, the top surface of the horizontal part 1421 is flush with the bottom end surface of the support toothed strip 15, the bottom end width of the support toothed strip 15 is smaller than the inner width of the transmission channel 141, the end of the support toothed strip 15 away from the stop block 145 is fixedly connected with a T-shaped manual pull rod 151, the outer end diameter of the manual pull rod 151 is smaller than the inner width of the transmission channel 141, after a group of support toothed strips 15 are lowered to be away from the height of the top surface of the workbench, in order to facilitate the extraction and replacement of the support toothed strip 15 after the active loosening of the clamping assembly 3, the support toothed strip 15 can be directly pulled out of the corresponding transmission channel 141 through the manual pull rod 151, when being pulled out, since the top surface of the horizontal part 1421 is flush with the bottom end of the support toothed strip 15, and the bottom width of the support toothed strip 15 is smaller than the inner width of the transmission channel 141, the loosened support toothed strip 15 can be conveniently and quickly extracted and replaced.

[0043] It is worth noting that, the Figure 5 and the Figure 6 after the plurality of support toothed strips 15 are raised, and the blocking rod 212 blocks the splash plate 23, and the splash plate 23 is in a large inclination state, and the Figure 7 and the Figure 8is when the plurality of support tooth strips 15 are lowered for replacement, and the cooperation between the switching assembly and the splash assembly 2, thereby enabling the turnover plate 21 to drive the splash plate 23 to reverse the fixed angle, and causing the splash plate 23 to be still in a small inclination state after reversing to shield the top of the support tooth strip 15, on the one hand, it can avoid the possibility of manual replacement of the support tooth strip 15, and the hand is splashed by the laser cutting flying object, on the other hand, it can drive the flying object not to fly and stick on the top of the support tooth strip 15, so as to avoid affecting the cutting of the special vehicle chassis plate.

[0044] Further, as shown in Figures 1-10 , the carding assembly 3 includes a reset spring 33 fixed on one side wall of the mounting plate 144 and close to the position of the guide column 142. The vertical section of the reset spring 33 is in the shape of a sandglass. The outer end of the reset spring 33 is fixedly connected with a moving block 34. A plurality of first teeth 341 are fixedly connected to one side wall of the moving block 34 facing the support tooth strip 15. A plurality of second teeth 342 are fixedly connected to the outer side of the support tooth strip 15. When the plurality of first teeth 341 and the plurality of second teeth 342 are engaged, the support tooth strip 15 is stably fixed to the top outer side of the mounting plate 144. An arc-shaped block 36 is fixedly connected to the back of the moving block 34. The inner side of the transmission skeleton 14 is fixedly connected with a transmission rod 31 at a position obliquely above the arc-shaped block 36. A second inclined surface 32 is formed in the bottom end of the transmission rod 31. When the arc-shaped block 36 moves downward, the transmission rod 31 no longer exerts pressure on the arc-shaped block 36. Thus, under the rebounding action of the reset spring 33, the plurality of first teeth 341 quickly disengage from the plurality of second teeth 342, so that the support tooth strip 15 can be actively released when it moves down to the splash assembly 2, facilitating manual quick replacement. Conversely, when the arc-shaped block 36 moves upward, it is pressed by the second inclined surface 32 at the bottom end of the transmission rod 31, so that the reset spring 33 is deformed under pressure, and the plurality of first teeth 341 and the plurality of second teeth 342 are engaged to fix the support tooth strip 15. First weakened grooves 331 are formed in the two middle bending parts of the reset spring 33. Second weakened grooves 332 are formed on both sides of the first weakened grooves 331. A movable block 35 is fixedly connected to the inner side of the reset spring 33 close to the moving block 34. The other end of the movable block 35 is sequentially movably penetrated through the reset spring 33 and the mounting plate 144, and is telescopic sliding in the movable slot formed in the inner side of the mounting plate 144. The movable block 35 and the movable slot are provided to ensure the stable movement of the moving block 34 during the movement of the plurality of first teeth 341 to the plurality of second teeth 342.

[0045] It is worth noting that the attached Figure 9The arc-shaped block 36 is pressed by the transmission rod 31, the reset spring 33 is in a compressed state, a plurality of first teeth 341 are engaged on a plurality of second teeth 342, thereby achieving firm fixation of the support toothed strip 15 on the mounting plate 144, and the Figure 10 When the support toothed strip 15 is lowered, the arc-shaped block 36 is separated from the pressing state of the transmission rod 31, the reset spring 33 in the drawing is in an initial state, and the plurality of first teeth 341 and the plurality of second teeth 342 are in an active state, at this time, it is convenient to pull out the support toothed strip 15 from the transmission channel 141 by the manual pull rod 151.

[0046] Further, as shown in Figures 1-10 The splash assembly 2 includes a support column 211 fixed on the inner side of the transmission framework 14, the outer side of the support column 211 is rotationally connected with a turnover plate 21, the top of the turnover plate 21 is integrally formed with a splash plate 23, the splash plate 23 can protect the replaced support toothed strip 15, avoid the splashes generated during laser cutting from remaining on the replaced support toothed strip 15 to affect subsequent use, the vertical section of the splash plate 23 is in an arc-shaped structure, the bottom end of the turnover plate 21 is integrally formed with a circular arc portion 22, the bottom end of the mounting plate 144 is provided with two symmetrically arranged first inclined surfaces 1441, the first inclined surfaces 1441 are matched with the circular arc portion 22, when the plurality of support toothed strips 15 to be replaced are lowered, the bottom end of the mounting plate 144 will press the circular arc portion 22 at the bottom end of the turnover plate 21, so that the turnover plate 21 drives the splash plate 23 to turn over, and protects the replaced support toothed strip 15, the outer side of the support column 211 is fixedly connected with a blocking rod 212 in an L-shaped cross section, the blocking rod 212 is used for limiting the turnover plate 21, the turnover plate 21 is in a large inclination state in an unprotected state, and the outer side surface of the turnover plate 21 is movably lapped on the outer side of the blocking rod 212.

[0047] It is worth noting that when the splash plate 23 shields and protects the top of the support toothed strip 15 to be replaced or the replaced support toothed strip 15, the circular arc portion 22 is movably lapped on one side of the outer wall of the mounting plate 144, when the splash plate 23 does not shield and protect, the outer side surface of the turnover plate 21 is movably lapped on the outer side of the blocking rod 212, the blocking rod 212 is used to make the circular arc portion 22 be just below the two first inclined surfaces 1441 when moving downward, and the two first inclined surfaces 1441 can press the circular arc portion 22 to drive the turnover plate 21 to drive the splash plate 23 to turn over, and protect the support toothed strip 15.

[0048] In actual use, when the device is powered on, the two groups of lifting rods 13 are initially distributed in an "one above and one below" manner: the upper lifting rod 13 is in the working position through the support tooth strip 15 installed by the switching assembly, the top end of the plurality of support tooth strips 15 is flush with the workbench table top of the laser cutting equipment body 1, at this time the arc block 36 of the clamping assembly 3 is pressed by the second inclined surface 32 of the transmission rod 31, the reset spring 33 is deformed and drives the first tooth 341 and the second tooth 342 to tightly engage, and the support tooth strip 15 is stably fixed; the support tooth strip 15 installed by the lower lifting rod 13 is in the standby position, the turnover plate 21 of the splash blocking assembly 2 is limited to a large inclination state by the blocking rod 212, and the splash plate 23 is in a non-protection position.

[0049] Place the special vehicle to be cut plate on the support tooth strip 15 in the upper working position, the bottom surface of the plate is attached to the tooth of the support tooth strip 15, start the laser cutting equipment body 1, and cut the plate according to the preset cutting path; during cutting, the high-temperature spatter is blocked by the upper support tooth strip 15, part of the spatter falls to the bottom of the workbench, and subsequent concentrated cleaning is performed, and the other group of plurality of support tooth strips 15 in standby position below has no risk of spatter adhesion because the splash plate 23 is in a protection state.

[0050] When the upper support tooth strip 15 needs to be replaced due to wear, the corresponding drive motor 133 of the upper lifting rod 13 is started, the drive motor 133 drives the screw rod 132 to rotate clockwise, and the upper lifting rod 13 moves vertically downward along the vertical guide rod 131 — at this time the lifting rod 13 drives the guide column 142 to slide downward along the Z-shaped transmission channel 141 of the transmission framework 14 through the sliding block 143, thereby driving the mounting plate 144 and the support tooth strip 15 to descend synchronously;

[0051] When the support tooth strip 15 descends to a position close to the splash blocking assembly 2, the first inclined surface 1441 at the bottom end of the mounting plate 144 will contact the circular arc portion 22 at the bottom end of the turnover plate 21, and as the mounting plate 144 continues to descend, the first inclined surface 1441 continuously presses the circular arc portion 22, drives the turnover plate 21 to turn around the support column 211, and the splash plate 23 is turned to the upper side of the support tooth strip 15, so as to form an arc-shaped protective barrier, at this time the mounting plate 144 stops descending, which is controlled by the travel switch of the drive motor 133, which is prior art and will not be described in detail.

[0052] During the descending of the upper support tooth strip 15, the guide column 142 drives the mounting plate 144 to move downward synchronously, the arc-shaped block 36 on the mounting plate 144 gradually separates from the second inclined surface 32 of the transmission rod 31, when the arc-shaped block 36 completely separates from the extrusion, the reset spring 33 recovers to the initial state under the setting of the first and second weakened grooves 331 and 332, and the movement of the moving block 34 is driven to the direction away from the support tooth strip 15, the first and second teeth 341 and 342 are automatically separated, and the support tooth strip 15 is in the detachable state; at this time, the movable block 35 slides along the movable slot of the mounting plate 144 to ensure the stability of the movement of the moving block 34.

[0053] Then, the operator holds the manual pull rod 151 of the support tooth strip 15 to be replaced, and pulls it outward along the horizontal direction of the transmission channel 141, because the bottom end width of the support tooth strip 15 is smaller than the inner width of the transmission channel 141, and the top surface of the horizontal part 1421 of the guide column 142 is flush with the bottom end of the support tooth strip 15, the support tooth strip 15 can be pulled out from the inverted convex sleeve slot of the mounting plate 144 without obstruction;

[0054] The new support tooth strip 15 is inserted into the inverted convex sleeve slot of the mounting plate 144, until one end of the support tooth strip 15 contacts the stop block 145 to prevent over-insertion, and the installation of the new support tooth strip 15 is completed.

[0055] When the support tooth strip 15 of the upper working group is worn out, the above steps are operated to alternately use the two groups of support tooth strips 15; during the regular maintenance of the equipment, only the splashes at the bottom of the workbench need to be cleaned, because the splash plate 23, the turnover plate 21 and the circular arc part 22 are integrally formed, and are made of aluminum nitride ceramic material, the aluminum nitride ceramic material can be integrally formed into an "arc-shaped splash plate 23" through a mold, the surface does not need additional coating to achieve low adhesion, and the arc-shaped structure and the inclined turnover plate 21 can guide the splashes to slide along the curved surface and the inclined surface, further reducing the residue.

[0056] The foregoing description of specific exemplary embodiments of the application is intended to be illustrative only. These descriptions are not intended to be limiting to the precise forms disclosed. Rather, the descriptions are intended to give the broadest range of options and alternatives to the practitioner of ordinary skill in the art. Numerous variations and modifications will become apparent to those skilled in the art once the above teachings have been considered. The scope of the application, therefore, is intended to be defined only by the claims and equivalents thereof in accordance with the full breadth to be afforded by the patent laws.

Claims

1. A cutting device for special vehicle modification, comprising a laser cutting device body, characterized in that, The worktable of the laser cutting equipment body is provided with a through channel on each of the two side walls, two vertically arranged guide rods are fixedly arranged in each through channel, an elevating rod is slidably arranged outside the two guide rods in each through channel, one end of the elevating rod is connected to the through channel by a driving device, the two elevating rods are arranged one above the other, and a support toothed strip is arranged between the two elevating rods and the through channel by a switching assembly.

2. A cutting device for special vehicle conversions as claimed in claim 1, wherein, The switching assembly comprises a plurality of equidistantly arranged transmission skeletons movably arranged on the inner side of the elevating rod, the top end and the bottom end of the transmission skeleton are fixedly arranged in the through channel, the vertical section of the transmission skeleton is in Z-shaped structure, the arrangement directions of the transmission skeletons in the two through channels are opposite, a Z-shaped transmission channel is formed in the transmission skeleton, a guide column is movably arranged in the transmission channel, the cross section of the guide column is in cross-shaped structure, a slider with an I-shaped vertical section is fixedly arranged at the outer end of the guide column, and the slider is slidably connected to a sliding groove formed in the elevating rod.

3. A cutting device for special vehicle conversions as claimed in claim 2, wherein, The inner end of the guide column is fixedly connected with an installation plate with an inverted convex-shaped vertical section, a stopper is fixedly arranged at the edge of the installation plate away from the guide column, and the support toothed strip is movably arranged outside the installation plate through an inverted convex-shaped sleeve groove formed at the bottom end of the support toothed strip.

4. A cutting device for special vehicle conversions as claimed in claim 2, wherein, A horizontal part is formed in the middle of the top end of the guide column, the top surface of the horizontal part is flush with the bottom end surface of the support toothed strip, the bottom end width of the support toothed strip is smaller than the inner width of the transmission channel, a T-shaped manual pull rod is fixedly arranged at one end of the support toothed strip away from the stopper, and the outer end diameter of the manual pull rod is smaller than the inner width of the transmission channel.

5. A cutting device for special vehicle conversions as claimed in claim 3, wherein, The reset spring piece is fixedly arranged on one side wall of the installation plate and close to the guide column, the vertical section of the reset spring piece is in hourglass-shaped structure, a moving block is fixedly arranged at the outer end of the reset spring piece, a plurality of equidistantly arranged first teeth are fixedly arranged on one side wall of the moving block facing the support toothed strip, and a plurality of equidistantly arranged second teeth are fixedly arranged on the outer side of the support toothed strip at the horizontal side of the first teeth.

6. A cutting device for special vehicle conversions as claimed in claim 5, wherein, An arc-shaped block is fixedly arranged at the middle of the back surface of the moving block, a transmission rod is fixedly arranged on the inner side of the transmission skeleton and obliquely above the arc-shaped block, and a second inclined surface is formed at the bottom end of the transmission rod and matched with the arc-shaped block.

7. A cutting device for special vehicle conversions as claimed in claim 5, wherein, First weakening grooves are formed at the two middle bending parts of the reset spring piece, second weakening grooves are formed at the two sides of the first weakening grooves and on the reset spring piece, a moving block is fixedly arranged on one inner side of the reset spring piece close to the moving block, and the other end of the moving block movably penetrates the reset spring piece, the installation plate and the activity groove formed in the inner side of the installation plate in sequence and is telescopically slid in the activity groove.

8. A cutting device for special vehicle conversions as claimed in claim 2, wherein, The splash-proof assembly comprises a support column fixed on the inner side surface of the transmission framework, the outer side of the support column is rotationally connected with a turnover plate, and the top of the turnover plate is integrally formed with a splash-proof plate.

9. A cutting device for special vehicle conversions as claimed in claim 8, characterized in that The vertical section of the splash-proof plate is in an arc shape structure, the bottom end of the turnover plate is integrally formed with a circular arc part, the bottom end of the mounting plate is provided with two symmetrically arranged first inclined surfaces, and the first inclined surfaces are matched with the circular arc part.

10. A cutting device for special vehicle conversions as claimed in claim 9, characterized in that The outer side of the support column is fixed with a blocking rod in an L-shaped structure, and the blocking rod is used for limiting the turnover plate.

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