Plate cutting device for semitrailer carriage machining

Abstract

The invention provides a plate cutting device for semitrailer carriage machining, and relates to the technical field of cutting devices.The plate cutting device comprises a bearing rack and a sliding rack, the sliding rack is located on the upper portion of the bearing rack, and the plate cutting device further comprises a through groove, a bearing frame, a scrap removing assembly, a driving assembly and a moving assembly; the bearing frame is arranged on the sliding rack in a sliding mode, the sliding direction of the bearing frame is the length direction of the through groove, a saw blade is rotationally installed in the bearing frame, the scrap removing assembly is installed on the bearing frame and comprises a rotating wheel, brushes and a collecting part, the rotating wheel is rotationally installed in the bearing frame, and the two brushes are symmetrically arranged in the rotating wheel; and the collecting part is installed in the bearing rack, the driving assembly is installed on the bearing rack, the moving assembly is installed on the sliding rack, and the technical problems that in the prior art, when a plate is cut, chippings on a saw blade are difficult to automatically clean, and meanwhile the chippings are difficult to collect are solved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of cutting devices, and particularly relates to a plate cutting device for processing a semitrailer compartment. BACKGROUND

[0002] The semitrailer compartment is a core load-bearing part installed on a semitrailer chassis for loading goods, mainly composed of a bottom plate, a side plate and a compartment plate, and connected to a saddle part of a towing vehicle through a towing pin at a front end, with part of the weight shared by the towing vehicle, and needing to be used in cooperation with the towing vehicle to travel. The semitrailer compartment is generally made of steel plates, alloy plates and the like according to its use and performance requirements. When the semitrailer compartment needs to be processed, the plate needs to be cut into a specified size, at which time a cutting device is used.

[0003] The plate cutting device is an important equipment in the production process of the semitrailer, and its cutting precision, operation efficiency and chip processing capacity directly affect the processing quality and production environment of the semitrailer compartment. At present, the cutting device of the existing device generally uses a simple scraping piece and the like to clean the chips adhered on the saw blade. The cleaning force cannot be automatically adjusted according to the rotating speed of the saw blade, which easily leads to incomplete cleaning of the chips on the surface of the saw blade, so that part of the chips still adhere to the saw blade, affecting the cutting precision and accelerating the wear of the saw blade, reducing the service life of the saw blade. Meanwhile, the chips generated in the cutting process are easy to scatter into the air or accumulate in the collection channel, polluting the working environment and increasing the cleaning workload of the operator. SUMMARY

[0004] The application aims to provide a plate cutting device for processing a semitrailer compartment, which solves the technical problems that it is difficult to automatically clean the chips on the saw blade and difficult to collect the chips when the plate is cut in the related art.

[0005] At least one embodiment of the application provides a plate cutting device for processing a semitrailer compartment, which comprises a bearing frame and a sliding frame, the sliding frame is located at the upper part of the bearing frame, and further comprises: A through groove is formed in the bearing frame; A bearing frame is slidingly arranged on the sliding frame, the sliding direction of the bearing frame is the length direction of the through groove, and a saw blade is rotatably arranged in the bearing frame; A chip cleaning assembly is arranged on the bearing frame, which is used for simultaneously cleaning the chips on the saw blade during the cutting of the plate and collecting and processing the cleaned chips; A driving assembly is arranged on the bearing frame, which is used for driving the saw blade to rotate; A moving assembly is installed on the sliding frame and used to push the carrier frame to move along the direction of the through slot.

[0006] In order to clean and collect the debris on the saw blade during the cutting of the plate, the debris cleaning assembly comprises: A rotating wheel is rotatably installed inside the carrier frame, and the rotating wheel is located at the upper part of the saw blade. A plurality of brushes are symmetrically arranged inside the rotating wheel, and each group of brushes is arranged at equal angles in a circumferential manner, and the bristles of the brushes are in contact with the saw blade. A collection part is installed inside the carrier frame and used to collect the debris generated during the cutting of the plate.

[0007] According to the exemplary embodiments of the present disclosure, further comprising: An exhaust frame is installed on the carrier frame. An exhaust slot is formed on both sides of the carrier frame, and the two exhaust slots are symmetrically arranged and in communication with the exhaust frame.

[0008] In order to collect the debris generated during the cutting of the plate, the collection part comprises: A plurality of collection frames are fixedly installed at equal distances inside the carrier frame, and each collection frame is located at the bottom of the through slot. A storage tank is installed at the bottom of each collection frame. An air suction pipe is fixedly installed inside the carrier frame, and a plurality of branch pipes are in communication with the air suction pipe at equal distances, and each branch pipe is in one-to-one correspondence with and in communication with a collection frame.

[0009] According to the exemplary embodiments of the present disclosure, further comprising: A plurality of collection slots are formed at equal intervals on each collection frame. A plurality of flow guide frames are installed at equal intervals inside each collection frame, and each collection slot is in one-to-one correspondence with a flow guide frame.

[0010] The bottom of the flow guide frame is located at the bottom of the communication position of the branch pipe and the collection frame.

[0011] According to the exemplary embodiments of the present disclosure, the driving assembly comprises: A transmission frame is installed on the side of the carrier frame, and a first driving motor is installed on the transmission frame. A transmission member is mounted inside the transmission frame for synchronously transmitting power to the saw blade and the rotating wheel.

[0012] According to the exemplary embodiment of the present disclosure, the transmission member comprises: A first gear and a second gear are both rotatably mounted inside the transmission frame, the first gear is coaxially connected with the saw blade, and the second gear is coaxially connected with the rotating wheel. A plurality of transmission gears are arranged in meshing between the first gear and the second gear, each of the transmission gears is rotatably mounted inside the transmission frame, and the output end of the first driving motor is coaxially connected with one of the transmission gears.

[0013] According to the exemplary embodiment of the present disclosure, the moving assembly comprises: Two mounting frames are symmetrically mounted on the bearing frame, and the mounting frames are in sliding fit with the sliding frame. A guide rod and a lead screw, the guide rod is fixedly mounted on the sliding frame, the guide rod is in sliding fit with one of the mounting frames, the lead screw is rotatably mounted on the sliding frame, a transmission nut is threadedly mounted on the lead screw, and the transmission nut is fixedly connected with the other mounting frame. A second driving motor is fixedly mounted on the sliding frame, and the output end of the second driving motor is fixedly connected with the lead screw.

[0014] According to the exemplary embodiment of the present disclosure, two telescopic sleeves are symmetrically mounted inside the sliding frame, both of the telescopic sleeves are sleeved on the lead screw, and both of the telescopic sleeves are fixedly connected with the corresponding mounting frames.

[0015] 1. Compared with the prior art, the plate cutting device for processing the carriage of a semitrailer provided by the embodiment synchronously transmits the power of the first driving motor to the saw blade and the rotating wheel through the first gear, the second gear and the transmission gears, drives the saw blade to rotate and cut, and synchronously rotates the brush to clean the cuttings, thereby realizing the cooperative linkage of cutting and cleaning operations, solving the problems of simple cleaning structure and incomplete cleaning of the existing device, avoiding the problem of excessive wear of the saw blade and the decrease of cutting precision, and prolonging the service life of the saw blade.

[0016] 2、Compared with the prior art, the plate cutting device for the semi-trailer carriage processing provided by the embodiment can form stable airflow by using external negative pressure equipment, and the debris swept by the brush can enter the inside of the air exhaust frame through the air exhaust groove, and then be discharged into the matched collection structure, and the scattered debris generated by cutting can be guided to the collection part, and then be stored in the storage tank after being shunted through the collection groove and guided by the flow guide frame, thereby solving the problems of poor debris collection effect, scattered debris pollution, and accumulation and blockage of the collection channel of the existing device. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort based on these drawings.

[0018] Figure 1 The overall structure schematic diagram of the plate cutting device for the semi-trailer carriage processing provided by the embodiment of the present application; Figure 2 The overall structure schematic diagram from another angle in the present application; Figure 3 The perspective structure schematic diagram of the present application in cross-section; Figure 4 The cross-section structure schematic diagram of the air exhaust frame, the debris removal assembly and the driving assembly in the present application; Figure 5 The cross-section structure schematic diagram of the air exhaust groove, the debris removal assembly and the driving assembly in the present application; Figure 6 The cross-section structure schematic diagram of the debris removal assembly in the present application; Figure 7 The cross-section structure schematic diagram of the bearing frame and the collection part in the present application; Figure 8 The cross-section structure schematic diagram of the collection part in the present application.

[0019] In the drawings: 1, bearing frame; 2, sliding frame; 3, through groove; 4, bearing frame; 5, saw blade; 6, runner; 7, brush; 8, air exhaust frame; 9, air exhaust groove; 10, collection frame; 11, storage tank; 12, air suction pipe; 13, branch pipe; 14, collection groove; 15, flow guide frame; 16, transmission frame; 17, first driving motor; 18, first gear; 19, second gear; 20, transmission gear; 21, mounting frame; 22, guide rod; 23, screw rod; 24, transmission nut; 25, second driving motor; 26, telescopic sleeve. DETAILED DESCRIPTION

[0020] The specific embodiments of the present disclosure will be described in detail below with reference to the drawings. It should be understood that the specific embodiments described herein are merely used to illustrate and explain the present disclosure, and are not intended to limit the present disclosure. For the convenience of understanding, the English abbreviations and related technical terms involved in the embodiments of the present disclosure are explained and described below.

[0021] It should be clear that the described embodiments are only a part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the present disclosure.

[0022] The terms used in the embodiments of the present disclosure are merely for the purpose of describing specific embodiments, and are not intended to limit the present disclosure. The singular forms "a", "an" and "the" used in the embodiments of the present disclosure and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0023] It should be understood that the term "and / or" used herein is merely a description of the logical relationship between the associated objects, which means that there can be three relationships, for example, A and / or B, which means that there can be three cases: A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are in an "or" relationship.

[0024] Depending on the context, the word "if" as used herein can be interpreted as meaning "when" or "while" or "in response to determining" or "in response to detecting". Similarly, depending on the context, the phrase "if it is determined" or "if (a stated condition or event) is detected" can be interpreted as meaning "when it is determined" or "in response to determining" or "when (a stated condition or event) is detected" or "in response to detecting (a stated condition or event)".

[0025] It should be understood that "first", "second", etc. used in the present disclosure are only for the purpose of distinguishing the description, and cannot be understood as indicating or implying relative importance, nor can it be understood as indicating or implying order.

[0026] In the description of the present disclosure, the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "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 disclosure and simplifying the description, and cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and cannot be understood as a limitation on the present disclosure.

[0027] In the description of the present disclosure, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, can also be abutment connection or integral connection; for those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances.

[0028] As shown in Figures 1 to 8 The plate cutting device for semi-trailer carriage processing in an embodiment of the present application is shown, which comprises a bearing frame 1 and a sliding frame 2, the sliding frame 2 is located at the upper part of the bearing frame 1, further comprising a through slot 3, a bearing frame 4, a scrap cleaning assembly, a driving assembly and a moving assembly, the bearing frame 1 is provided with the through slot 3, the bearing frame 4 is slidingly arranged on the sliding frame 2, the sliding direction of the bearing frame 4 is the length direction of the through slot 3, a saw blade 5 is rotatably installed inside the bearing frame 4, the scrap cleaning assembly is installed on the bearing frame 4, which is used for synchronously cleaning the scraps on the saw blade 5 during cutting the plate, and collecting and processing the cleaned scraps, the scrap cleaning assembly comprises a rotating wheel 6, a brush 7 and a collecting part, the rotating wheel 6 is rotatably installed inside the bearing frame 4, the rotating wheel 6 is located at the upper part of the saw blade 5, two groups of brushes 7 are symmetrically arranged inside the rotating wheel 6, the brushes 7 can be installed by screws and the like, each group of brushes 7 is arranged in a plurality of circumferential shapes at equal angles, the bristles of the brushes 7 are in contact with the saw blade 5, the collecting part is installed inside the bearing frame 1, which is used for collecting the scraps generated during cutting the plate, further comprising an exhaust rack 8 and an exhaust slot 9, the exhaust rack 8 is installed on the bearing frame 4, the exhaust slots 9 are arranged on both sides of the bearing frame 4, the two exhaust slots 9 are symmetrically arranged, and the two exhaust slots 9 are in communication with the exhaust rack 8.

[0029] Specifically, before cutting operation, the carriage plate to be cut is placed on the bearing frame 1, so that the plate cutting position is aligned with the through slot 3, then the driving assembly is started to drive the saw blade 5 to rotate, and the moving assembly is started to push the bearing frame 4 to move on the sliding frame 2, so that the plate is cut by the saw blade 5, at the same time, the rotating wheel 6 driven by the driving assembly rotates synchronously, the rotating wheel 6 drives the two groups of circumferentially arranged brushes 7 to rotate synchronously, the brushes 7 and the saw blade 5 are in contact, the scraps attached to the surface and teeth of the saw blade 5 are cleaned in real time, the exhaust rack 8 is connected with the external negative pressure equipment, under the action of the negative pressure equipment, a stable negative pressure airflow is formed through the two symmetric exhaust slots 9, the scattered scraps generated during cutting and the scraps cleaned by the brushes 7 are uniformly guided into the collecting structure, avoiding the scraps from scattering to the cutting area or adhering to the surface of the plate, ensuring the smooth cutting operation, reducing the wear of the saw blade 5 and the equipment by the scraps, through the setting of the collecting part, a large amount of scraps generated during cutting the plate are collected, avoiding the scraps from scattering into the air or accumulating in the collecting channel.

[0030] The collecting part includes collecting racks 10, storage tanks 11 and air extraction pipes 12. A plurality of collecting racks 10 are fixedly installed at equal intervals inside the bearing rack 1, each collecting rack 10 is located at the bottom of the through slot 3, and each collecting rack 10 is provided with a storage tank 11 at the bottom. The air extraction pipe 12 is fixedly installed inside the bearing rack 1, and a plurality of branch pipes 13 are connected at equal intervals on the side of the air extraction pipe 12. The plurality of branch pipes 13 are respectively and correspondingly connected with the plurality of collecting racks 10. The collecting part further includes collecting grooves 14 and flow guides 15. A plurality of collecting grooves 14 are provided at intervals on each collecting rack 10, and a plurality of flow guides 15 are fixedly installed at intervals inside each collecting rack 10. The plurality of collecting grooves 14 are respectively and correspondingly connected with the plurality of flow guides 15, and the bottom of the flow guide 15 is located at the bottom of the connecting position of the branch pipe 13 and the collecting rack 10.

[0031] Specifically, the negative pressure device is started to extract the air inside the air extraction pipe 12, so that the air inside the corresponding collecting rack 10 is extracted through the plurality of branch pipes 13, thereby generating negative pressure at the inlet of the collecting groove 14 to realize preliminary collection and distribution of the debris and avoid accumulation of the debris. The debris entering the collecting groove 14 slides along the corresponding flow guide 15, thereby guiding the debris to smoothly fall into the storage tank 11. When the debris in the storage tank 11 accumulates to a preset amount, the storage tank 11 can be disassembled for cleaning, thereby realizing collection and treatment of the debris.

[0032] The driving assembly is installed on the bearing rack 4 and is used to drive the saw blade 5 to rotate. The driving assembly includes a transmission rack 16 and a transmission member. The transmission rack 16 is installed on the side of the bearing rack 4, the first driving motor 17 is installed on the transmission rack 16, and the transmission member is installed inside the transmission rack 16 and is used to synchronously transmit power to the saw blade 5 and the rotating wheel 6.

[0033] Specifically, when the saw blade 5 is driven to rotate, the first driving motor 17 is started to drive the transmission member to rotate, thereby synchronously driving the saw blade 5 and the rotating wheel 6 to rotate synchronously.

[0034] The transmission member includes a first gear 18, a second gear 19 and a transmission gear 20. The first gear 18 and the second gear 19 are rotatably installed inside the transmission rack 16. The first gear 18 is coaxially connected with the saw blade 5, the second gear 19 is coaxially connected with the rotating wheel 6, and a plurality of transmission gears 20 are arranged in meshing relationship between the first gear 18 and the second gear 19. Each transmission gear 20 is rotatably installed inside the transmission rack 16, and the output end of the first driving motor 17 is coaxially connected with one of the transmission gears 20.

[0035] Specifically, the first driving motor 17 drives the corresponding transmission gear 20 to rotate, so that the first gear 18 and the second gear 19 are driven to rotate synchronously through the transmission gear 20, and then the saw blade 5 is driven to rotate by the first gear 18, and the runner 6 is driven to rotate by the second gear 19.

[0036] The moving assembly is installed on the sliding frame 2 and is used to push the bearing frame 4 to move along the direction of the through slot 3, and the moving assembly comprises a mounting frame 21, a guide rod 22, a lead screw 23 and a second driving motor 25, two mounting frames 21 are symmetrically installed on the bearing frame 4 and are in sliding fit with the sliding frame 2, the guide rod 22 is fixedly installed on the sliding frame 2 and is in sliding fit with one of the mounting frames 21, the lead screw 23 is rotatably installed on the sliding frame 2, a transmission nut 24 is threadedly installed on the lead screw 23, the transmission nut 24 is fixedly connected with the other mounting frame 21, and the second driving motor 25 is fixedly installed on the sliding frame 2 and is fixedly connected with the lead screw 23 at the output end.

[0037] Specifically, when cutting, the second driving motor 25 is started, the second driving motor 25 drives the lead screw 23 to rotate, the transmission nut 24 of the lead screw 23 moves axially along the lead screw 23 when the lead screw 23 rotates, thereby driving the mounting frame 21 fixedly connected therewith to move, and the two mounting frames 21 synchronously drive the bearing frame 4 to slide along the sliding frame 2 in the same direction as the length direction of the through slot 3, so that the saw blade 5 moves stably along the cutting line of the plate, the guide rod 22 plays a guiding and limiting role on one of the mounting frames 21, so as to avoid the bearing frame 4 from deviating when moving and to ensure the cutting straightness.

[0038] The two telescopic sleeves 26 are telescoped synchronously with the mounting frames 21, can effectively shield the lead screw 23, prevent the cutting debris from entering the gap of the lead screw 23, avoid the wear or jamming of the lead screw 23, and prolong the service life of the equipment.

[0039] The working principle or use process of the present application is as follows: Before cutting, the carriage plate to be cut is placed on the bearing frame 1, the cutting position of the plate is aligned with the through slot 3, the position of the plate is fixed, the air exhaust frame 8 and the air suction pipe 12 are connected with the external negative pressure equipment respectively, the storage tank 11 is confirmed to be firmly installed, and the brush 7 is in contact with the saw blade 5.

[0040] Then the first drive motor 17 is started, the transmission member in the transmission frame 16 is driven to rotate, the transmission gear 20, the first gear 18 and the second gear 19 are synchronously rotated, the saw blade 5 and the rotating wheel 6 are synchronously rotated, at this time, the second drive motor 25 is started, the screw rod 23 is driven to rotate, the transmission nut 24 and the mounting frame 21 are moved, the bearing frame 4 is driven to slide along the length direction of the sliding frame 2 and the through slot 3, the accurate cutting of the plate is completed, at the same time, the rotating wheel 6 drives the two groups of brushes 7 to synchronously rotate, the debris on the saw blade 5 is cleaned.

[0041] In the process of cutting, the negative pressure equipment is started, the air flow is formed through the exhaust slot 9, the air in the exhaust pipe 12 is extracted by the negative pressure, the negative pressure is generated in the collecting groove 14 to receive the shunt debris, the debris slides along the guide frame 15 and finally falls into the storage tank 11 to be stored, until the cutting operation is completed.

[0042] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the foregoing embodiments of the present application are described in detail, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included in the protection scope of the present application.

Claims

1. A sheet metal cutting device for processing semi-trailer cargo boxes, comprising a support frame (1) and a sliding frame (2), wherein the sliding frame (2) is located above the support frame (1), characterized in that, Also includes: Through slot (3), the through slot (3) is provided on the bearing frame (1); The support frame (4) is slidably mounted on the sliding frame (2). The sliding direction of the support frame (4) is the length direction of the through groove (3). A saw blade (5) is rotatably mounted inside the support frame (4). The chip removal assembly is installed on the support frame (4) and is used to simultaneously clean the chips on the saw blade (5) during the cutting process and to collect and process the cleaned chips. A drive assembly, which is mounted on the support frame (4), is used to drive the saw blade (5) to rotate; A movable component, which is mounted on the sliding frame (2), is used to push the support frame (4) to move along the direction of the through groove (3).

2. The sheet metal cutting device for processing semi-trailer carriages according to claim 1, characterized in that, The dust removal assembly includes: Rotary wheel (6), which is rotatably mounted inside the support frame (4), is located on the upper part of the saw blade (5); The brush (7) is symmetrically arranged inside the rotating wheel (6). Each set of brushes (7) has several brushes arranged in a circular shape at equal angles. The bristles of the brush (7) are in contact with the saw blade (5). The collection unit is installed inside the support frame (1) and is used to collect the debris generated during the plate cutting process.

3. The sheet metal cutting device for processing semi-trailer carriages according to claim 2, characterized in that, Also includes: The exhaust frame (8) is mounted on the support frame (4). The ventilation duct (9) is provided on both sides of the support frame (4). The two ventilation ducts (9) are arranged symmetrically and are connected to the ventilation frame (8).

4. The sheet metal cutting device for processing semi-trailer carriages according to claim 3, characterized in that, The collection unit includes: Collection rack (10), a plurality of collection racks (10) are fixedly installed at equal intervals inside the bearing frame (1), and each collection rack (10) is located at the bottom of the through groove (3); Storage tank (11), each of the collection racks (10) is equipped with a storage tank (11) at the bottom. The suction pipe (12) is fixedly installed inside the support frame (1). The side of the suction pipe (12) is connected to several branch pipes (13) at equal distances. The several branch pipes (13) correspond to and are connected to several collection racks (10) respectively.

5. A sheet metal cutting device for processing semi-trailer carriages according to claim 4, characterized in that, Also includes: Collection slots (14), and a plurality of collection slots (14) are spaced apart on each of the collection racks (10). The flow guide (15) is installed at intervals inside each of the collection racks (10), and the collection slots (14) correspond one-to-one with the flow guides (15).

6. A sheet metal cutting device for processing semi-trailer carriages according to claim 5, characterized in that, The bottom of the flow guide (15) is located at the bottom of the connection between the branch pipe (13) and the collection rack (10).

7. A sheet metal cutting device for processing semi-trailer carriages according to claim 6, characterized in that, The driving component includes: Transmission frame (16), the transmission frame (16) is mounted on the side of the support frame (4), and the first drive motor (17) is mounted on the transmission frame (16). The transmission component is installed inside the transmission frame (16) to synchronously transmit power to the saw blade (5) and the wheel (6).

8. A sheet metal cutting device for processing semi-trailer cargo boxes according to claim 7, characterized in that, The transmission component includes: The first gear (18) and the second gear (19) are rotatably mounted inside the transmission frame (16). The first gear (18) is coaxially connected to the saw blade (5), and the second gear (19) is coaxially connected to the rotating wheel (6). A plurality of transmission gears (20) are meshed between the first gear (18) and the second gear (19). Each transmission gear (20) is rotatably mounted inside the transmission frame (16). The output end of the first drive motor (17) is coaxially connected to one of the transmission gears (20).

9. A sheet metal cutting device for processing semi-trailer carriages according to claim 1, characterized in that, The moving component includes: Mounting bracket (21), two mounting brackets (21) are symmetrically mounted on the support frame (4), and the mounting brackets (21) are slidably engaged with the sliding frame (2); Guide rod (22) and lead screw (23), the guide rod (22) is fixedly installed on the sliding frame (2), the guide rod (22) is slidably engaged with one of the mounting brackets (21), the lead screw (23) is rotatably installed on the sliding frame (2), and a transmission nut (24) is threaded on the lead screw (23), the transmission nut (24) is fixedly connected to the other mounting bracket (21); The second drive motor (25) is fixedly mounted on the sliding frame (2), and the output end of the second drive motor (25) is fixedly connected to the lead screw (23).

10. A sheet metal cutting device for processing semi-trailer carriages according to claim 9, characterized in that, The sliding frame (2) has two telescopic sleeves (26) symmetrically installed inside. Both telescopic sleeves (26) are sleeved on the lead screw (23) and both telescopic sleeves (26) are fixedly connected to the corresponding mounting bracket (21).

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