Welding device for engine case supporting plate

Abstract

The invention relates to the technical field of engine accessories, in particular to an engine case supporting plate welding device which comprises a base, a plurality of first sliding grooves are formed in the upper side of the base, a first sliding block is slidably connected to the inner side of each first sliding groove, and a supporting plate is fixed to the upper side of each first sliding block; one end of each supporting plate is rotationally connected with an inner rolling wheel. The clamping and separating mechanism drives the multiple first sliding blocks to be separated, so that the multiple inner rolling wheels are driven to be separated, the multiple inner rolling wheels apply outward thrust to the inner side wall of the case, the multiple pressing mechanisms drive the multiple outer rolling wheels to synchronously move towards the circle center of the case correspondingly, the multiple outer rolling wheels are pressed on the outer side wall of the case, and therefore the outer rolling wheels are driven to be separated. And the multiple outer rollers can apply equal inward thrust to the outer side wall of the cartridge receiver and apply reverse thrust to the inner side wall and the outer side wall of the cartridge receiver at the same time, the thrust in the opposite direction acts on the side wall of the cartridge receiver, and therefore the cartridge receiver is not prone to deformation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engine accessories, in particular to an engine case support plate welding device. BACKGROUND

[0002] The exhaust case is an important component of an aero-engine, located at the tail of the engine, mainly used for guiding and discharging high-temperature gas, while supporting the rear structure of the turbine to ensure efficient and safe operation of the engine.

[0003] When the exhaust case is processed, two flanges need to be welded and fixed at both ends of the case. Before welding, the two flanges need to be assembled at both ends of the case, and then the flanges and the case are fixed by a clamping device.

[0004] Through retrieval, a Chinese patent with publication number CN109396724A discloses an engine case machining support device, which comprises a positioning plate, a support column and an adjusting mechanism. The positioning plate is sleeved on the support column, and the positioning plate is provided with radially extending extension plates, which are at least two and evenly distributed in the circumferential direction. The adjusting mechanism comprises a stop block, a wedge block and a top block which are sequentially arranged from the free end of the positioning plate to the support column, and the stop block is fixedly arranged. The wedge block is used to tightly push the top block outward. The top block is provided with a guide seat, the guide seat is fixed at both ends of the extension plate, and the middle is arched to form a groove that can pass the top block.

[0005] Based on the above retrieval and combined with the actual problems, it is found that the device fixes the case by applying outward pushing force to the inside of the case. At this time, the inner wall of the case is subjected to outward pushing force at multiple positions, while the outer wall of the case is not subjected to inward pushing force to counteract these outward pushing forces, resulting in certain internal stress of the whole case. When the local temperature of the case rises due to welding, the case is easily deformed, which reduces its roundness. Moreover, the device is difficult to ensure that the pushing force received by each position of the inner wall of the case remains equal. If the outward pushing force received by each position of the inner wall of the case is not equal, the deformation degree of the case will be further increased. SUMMARY

[0006] The present application aims to provide an engine case support plate welding device to solve the problems in the background art.

[0007] The technical scheme of the present application is: an engine case support plate welding device, comprising a base, a plurality of sliding grooves are formed in the upper side of the base, the inner side of each sliding groove is slidably connected with a sliding block, the upper side of each sliding block is fixed with a support plate, one end of each support plate is rotatably connected with an inner roller, and the other end of each support plate is movably provided with an outer roller; further comprising a plurality of pressing mechanisms for applying a pushing force to each outer roller; a clamping and separating mechanism for moving the plurality of sliding blocks; the pressing mechanism comprises a sliding groove formed in one end of the support plate and a cylinder mounted on one end of the support plate, the inner side of the sliding groove is slidably connected with a sliding block and a sliding block, the outer roller is rotatably connected to the upper side of the sliding block, the sliding block and the sliding block are elastically connected by a pressing spring; the clamping and separating mechanism comprises a gear disc rotatably connected to the inner side of the base and a plurality of sliding pins fixed to one end of each sliding block, a plurality of inclined guide grooves are formed in the inner side of the gear disc, and each sliding pin is slidably connected to the inner side of the plurality of inclined guide grooves.

[0008] Preferably, the clamping and separating mechanism further comprises an electric telescopic rod mounted on the inner side of the base and a rack slidably arranged on the inner side of the base, one end of the rack is fixedly connected with the telescopic end of the electric telescopic rod, and the rack and the gear disc are engaged by teeth.

[0009] Preferably, the inner side of the base is fixed with two rack guide rods, and the rack is slidably sleeved on the outer side of the two rack guide rods.

[0010] Preferably, a plurality of the inner rollers are provided with a synchronous rotating mechanism, the synchronous rotating mechanism comprises a plurality of connecting shafts rotatably connected through the inner side of each sliding block, each connecting shaft penetrates the inner side of the inner roller fixed in the corresponding position, and the lower end of each connecting shaft is fixed with a synchronous pulley, a plurality of the synchronous pulleys are drivingly connected by a synchronous belt, and a plurality of tensioning mechanisms for adjusting the tension of the synchronous belt are further included.

[0011] Preferably, the tensioning mechanism comprises a sleeve rod fixed on the inner side of the base, a telescopic rod is slidably inserted into one end of the sleeve rod, a bracket is fixed to one end of the telescopic rod, a tensioning wheel is rotatably connected to the inner side of the bracket, and one end of the bracket is elastically connected with one end of the sleeve rod by a tensioning spring.

[0012] Preferably, one end of one of the support plates is provided with a driving mechanism, the driving mechanism comprises a motor mounted on one end of the support plate and a driven pulley fixed on the upper end of the inner roller, the driving end of the motor is fixed with a driving pulley, and the driving pulley and the driven pulley are drivingly connected by a transmission belt.

[0013] Preferably, the air source device for pressing compressed air into the plurality of cylinders comprises a gas tank arranged outside the base and a gas pump, the gas outlet end of the gas pump is in communication with the inside of the gas tank, the gas outlet end of the gas tank is connected with an air pipe, one end of the air pipe is connected with a ring-shaped shunt pipe, an electromagnetic valve is connected to the ring-shaped shunt pipe at a position corresponding to each cylinder, and one end of each electromagnetic valve is in communication with one end of the inside of the corresponding cylinder.

[0014] Preferably, one side of each sliding block two is fixed with an internally threaded cylinder, one end of each sliding block three is mounted with a micro switch, the inside of each internally threaded cylinder is threadedly connected with an adjusting screw, and each micro switch is electrically connected with the corresponding electromagnetic valve.

[0015] Preferably, the plurality of inner rollers and the plurality of outer rollers are made of rubber material.

[0016] The engine case support plate welding device provided by the application has the following improvements and advantages compared with the prior art. Firstly, the plurality of sliding blocks one are separated by the clamping and separating mechanism, thereby driving the plurality of inner rollers to separate, so that the plurality of inner rollers apply outward pushing force to the inner side wall of the case, and the plurality of outer rollers are synchronously moved to the center of the case by the plurality of pressing mechanisms, so that the plurality of outer rollers are pressed against the outer side wall of the case, and the plurality of outer rollers can apply equal inward pushing force to the outer side wall of the case, so that the opposite pushing forces are applied to the inner and outer side walls of the case, and the opposite pushing forces are applied to the side wall of the case, so that the case is not easily deformed and the roundness of the case is not affected.

[0017] Secondly, one of the plurality of inner rollers is driven to rotate by the driving mechanism, and the other inner rollers are synchronously driven to rotate by the synchronous rotating mechanism, so that the plurality of inner rollers drive the case to rotate by friction force, and the plurality of inner rollers and the plurality of outer rollers can be sequentially rolled along the side wall of the case during the rotation, so that the roundness of the case is maintained and the local deformation of the case caused by local heat generated during welding is prevented.

[0018] Thirdly, the adjusting screw is threadedly connected to one end of each sliding block two, the micro switch is mounted on one end of each sliding block three, the distance between the end of each adjusting screw and each micro switch is adjusted to be equal, and when the plurality of cylinders are simultaneously extended by equal lengths, the plurality of micro switches can be simultaneously triggered, so that the plurality of electromagnetic valves are simultaneously closed, the plurality of cylinders are extended by equal lengths, the plurality of compression springs are compressed by equal lengths, the plurality of outer rollers apply equal pushing force to different positions of the outer side wall of the case, and the deformation of the case caused by uneven pushing force is further prevented. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the specific embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or prior art description. Obviously, the drawings described below are only some embodiments of the present application, and all other drawings obtained by those of ordinary skill in the art without creative effort based on these drawings also belong to the scope of protection of the present application.

[0020] Figure 1 is a schematic view of the three-dimensional structure of the present application; Figure 2 is a schematic view of the partially exploded structure of the present application; Figure 3 is a schematic view of the three-dimensional structure of the present application; Figure 1 is a schematic view of the enlarged structure at A in the present application; Figure 4 is a bottom view of the internal three-dimensional structure of the present application; Figure 5 is a schematic view of the internal assembly relationship of the present application; Figure 6 is a schematic view of the three-dimensional structure of the present application; Figure 4 is a schematic view of the enlarged structure at B in the present application; Figure 7 is a schematic view of the structure of the present application in the fixed state of the machine case.

[0021] Reference signs: 1, base; 2, sliding groove one; 3, sliding block one; 4, support plate; 5, inner roller; 6, outer roller; 7, synchronous pulley; 8, synchronous belt; 9, connecting shaft; 10, sleeve rod; 11, telescopic rod; 12, bracket; 13, tensioning wheel; 14, tensioning spring; 101, sliding groove two; 102, sliding block two; 103, sliding block three; 104, air cylinder; 105, pressing spring; 106, electromagnetic valve; 107, gas storage tank; 108, air pump; 109, air pipe; 110, annular shunt pipe; 111, inner threaded cylinder; 112, adjusting screw; 113, micro switch; 201, motor; 202, driving pulley; 203, driven pulley; 301, gear disc; 302, inclined guide groove; 303, sliding pin; 304, rack; 305, electric telescopic rod; 306, rack guide rod. DETAILED DESCRIPTION

[0022] The present application will be described in detail below, and the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort also belong to the scope of protection of the present application.

[0023] This invention provides an improved welding device for an engine casing support plate. The technical solution of this invention is as follows: like Figures 1 to 7 As shown, this embodiment of the invention provides a welding device for an engine casing support plate, including a base 1. The upper side of the base 1 has multiple sliding grooves 2. A slider 3 is slidably connected to the inner side of each sliding groove 2. A support plate 4 is fixed to the upper side of each slider 3. An inner roller 5 is rotatably connected to one end of each support plate 4, and an outer roller 6 is movably disposed at the other end of each support plate 4. The device also includes multiple pressing mechanisms that apply a pushing force to each outer roller 6; and a clamping and separating mechanism that drives the multiple sliders 3 to move. The pressing mechanism includes a second sliding groove 1 opened at one end of the support plate 4. 01 and cylinder 104 installed at one end of support plate 4, slider 102 and slider 103 are slidably connected to the inner side of slide groove 101, outer roller 6 is rotatably connected to the upper side of slider 102, slider 102 and slider 103 are elastically connected by pressing spring 105; clamping and separating mechanism includes gear disk 301 rotatably connected to the inner side of base 1 and multiple sliding pins 303 fixed to one end of each slider 1 3, multiple inclined guide grooves 302 are opened inside the gear disk 301, and each sliding pin 303 is slidably connected to the inner side of multiple inclined guide grooves 302 respectively.

[0024] Furthermore, the clamping and separating mechanism also includes an electric telescopic rod 305 installed on the inner side of the base 1 and a rack 304 slidably disposed on the inner side of the base 1. One end of the rack 304 is fixedly connected to the telescopic end of the electric telescopic rod 305, and the rack 304 meshes with the gear disk 301 through teeth. Two rack guide rods 306 are fixed on the inner side of the base 1, and the rack 304 is slidably sleeved on the outer side of the two rack guide rods 306. The clamping separation mechanism drives multiple sliders 3 to separate or merge synchronously, which in turn drives multiple inner rollers 5 to separate or merge synchronously. When multiple inner rollers 5 separate synchronously, they can apply equal thrust to each position on the inner side wall of the casing, which improves the fixing reliability and avoids casing deformation.

[0025] Furthermore, a synchronous rotation mechanism is provided between the multiple inner rollers 5. The synchronous rotation mechanism includes multiple connecting shafts 9 that are rotatably connected through the interior of each slider 3. Each connecting shaft 9 passes through and is fixed inside the corresponding inner roller 5, and a synchronous pulley 7 is fixed to the lower end of each connecting shaft 9. The multiple synchronous pulleys 7 are connected by a synchronous belt 8. The mechanism also includes multiple tensioning mechanisms for adjusting the tension of the synchronous belt 8. The tensioning mechanism includes a sleeve 10 fixed to the inner side of the base 1 (e.g., ...). Figure 6As shown in the drawings), one end of the sleeve rod 10 is slidingly inserted with the telescopic rod 11, one end of the telescopic rod 11 is fixed with the support 12, the inner side of the support 12 is rotatably connected with the tensioning wheel 13, and one end of the support 12 is elastically connected with one end of the sleeve rod 10 through the tensioning spring 14; The plurality of inner rollers 5 are driven to rotate synchronously by the synchronous rotating mechanism, and the plurality of inner rollers 5 drive the engine case to rotate by the friction force during rotation. The plurality of inner rollers 5 and the plurality of outer rollers 6 can be sequentially rolled along the side wall of the engine case during rotation, so that the engine case maintains roundness and prevents local deformation of the engine case caused by local heat generated during welding.

[0026] Further, one end of one of the support plates 4 is provided with a driving mechanism, the driving mechanism includes a motor 201 mounted on one end of the support plate 4 and a driven pulley 203 fixed on the upper end of the inner roller 5, and the driving end of the motor 201 is fixed with a driving pulley 202, and the driving pulley 202 and the driven pulley 203 are drivingly connected through a transmission belt. The driving mechanism is used to drive one of the inner rollers 5 to rotate, and the inner roller 5 drives the other inner rollers 5 to rotate synchronously through the synchronous rotating mechanism, so as to drive the engine case to rotate.

[0027] Further, the gas source device for pressing compressed air into the plurality of cylinders 104 is further included, the gas source device includes a gas storage tank 107 and a gas pump 108 arranged outside the base 1, the gas outlet end of the gas pump 108 is in communication with the inner side of the gas storage tank 107, the gas outlet end of the gas storage tank 107 is connected with a gas pipe 109, one end of the gas pipe 109 is connected with an annular shunt pipe 110, each electromagnetic valve 106 is connected with the annular shunt pipe 110 at a position corresponding to each cylinder 104, one end of each electromagnetic valve 106 is in communication with one end of the inner side of the corresponding position of the cylinder 104, each sliding block two 102 is fixed with an internal thread cylinder 111 on one side, each sliding block three 103 is provided with a micro switch 113 on one end, each internal thread cylinder 111 is rotatably connected with an adjusting screw 112 through a thread in the inside, and each micro switch 113 is electrically connected with the corresponding position of the electromagnetic valve 106. By threadedly connecting the adjusting screw 112 to one end of each sliding block two 102 and installing the micro switch 113 on one end of each sliding block three 103, the distance between the end of each adjusting screw 112 and each micro switch 113 is adjusted to be equal, and when the plurality of cylinders 104 extend by equal lengths at the same time, the plurality of micro switches 113 can be triggered at the same time, so that the plurality of electromagnetic valves 106 are closed at the same time, so that the plurality of cylinders 104 extend by equal lengths, and thus the plurality of pressing springs 105 can be compressed by equal lengths, so that the plurality of outer rollers 6 can apply equal pushing force to different positions of the side wall of the engine case, further preventing deformation of the engine case caused by uneven pushing force.

[0028] Working principle: when using, the cartridge to be welded is placed on the upper side of the plurality of support plates 4, and the plurality of inner rollers 5 are located inside the cartridge, and the plurality of outer rollers 6 are located outside the cartridge (as shown in Figure 7 When fixing, the extension end of the electric telescopic rod 305 in the clamping and separating mechanism needs to be controlled to extend, the extension end of the electric telescopic rod 305 drives the horizontal movement of the rack 304, the rack 304 moves to drive the gear disc 301 to rotate clockwise by a certain angle through the meshing of the teeth (as shown in Figure 4 The gear disc 301 drives the synchronous rotation of the plurality of internal inclined guide grooves 302, and since the plurality of slide pins 303 are respectively adapted to slide in the inner side of the plurality of inclined guide grooves 302, when the plurality of inclined guide grooves 302 rotate clockwise with the gear disc 301, the plurality of inclined guide grooves 302 respectively apply outward pushing force to the plurality of slide pins 303, the plurality of slide pins 303 are respectively driven by the pushing force to move outwardly synchronously, the plurality of slide blocks one 3 are respectively driven by the plurality of slide pins 303 to move outwardly synchronously, the plurality of support plates 4 are respectively driven by the plurality of slide blocks one 3 to move outwardly synchronously, and the plurality of inner rollers 5 are respectively driven by the plurality of support plates 4 to move outwardly synchronously, so that the plurality of inner rollers 5 are in contact with the inner side wall of the cartridge, thereby positioning the cartridge and keeping the cartridge concentric with the base 1, and the plurality of inner rollers 5 apply outward pushing force to the inner side wall of the cartridge, thereby fixing the cartridge, and the plurality of inner rollers 5 can move synchronously under the action of the clamping and separating mechanism, so that the pushing force of the plurality of inner rollers 5 acting on different positions of the inner wall of the cartridge is equal, effectively avoiding the problem of deformation of the cartridge caused by uneven pushing force; The air pump 108 in the air source device pressurizes compressed air into the inside of the gas storage tank 107, opens the valve at the air outlet end of the gas storage tank 107, and makes the compressed air in the gas storage tank 107 enter into the inside of the annular shunt pipe 110 through the air pipe 109, and then enters into the inside of one end of the plurality of air cylinders 104 in the plurality of pressing mechanisms through the plurality of electromagnetic valves 106, respectively, drives the extension end of the plurality of air cylinders 104 to extend outwardly, and the extension end of each air cylinder 104 extends to drive the slide block three 103 to move in the slide groove two 101, the slide block three 103 drives the slide block two 102 to move through the pressing spring 105, and the slide block two 102 drives the outer roller 6 on the upper side to move towards the outer side wall of the cartridge, when the outer roller 6 is in contact with the outer side wall of the cartridge, the slide block two 102 no longer moves, at this time the slide block three 103 continues to move to compress the pressing spring 105, as the compression amount of the pressing spring 105 increases, the slide block two 102 and the outer roller 6 receive greater pushing force, so the outer roller 6 applies greater lateral pushing force to the outer side wall of the cartridge, through the pushing force applied by the plurality of inner rollers 5 to the inner side wall of the cartridge and the pushing force applied by the plurality of outer rollers 6 to the outer side wall of the cartridge, the inner and outer side walls of the cartridge receive pushing forces close in size, which not only improves the fixing reliability, but also avoids the deformation of the cartridge under the action of the clamping force, and reduces the roundness of the cartridge; In order to ensure that the thrusts exerted by the plurality of outer rollers 6 on different parts of the outer side wall of the casing are equal, an inner threaded cylinder 111 and an adjusting screw 112 are arranged at one end of each slider two 102, and a micro switch 113 is arranged at one end of each slider three 103. Rotating the adjusting screw 112 can adjust the position of the adjusting screw 112, and adjust the distance between the end of the adjusting screw 112 and the micro switch 113. The distance between the plurality of adjusting screws 112 in the plurality of pressing mechanisms and the micro switch 113 is kept equal. When the plurality of sliders three 103 compresses the plurality of pressing springs 105 to an equal length, the plurality of adjusting screws 112 can simultaneously press the plurality of micro switches 113, thereby simultaneously closing the circuit in the plurality of micro switches 113. Since the plurality of micro switches 113 are electrically connected to the plurality of electromagnetic valves 106, when the plurality of micro switches 113 are closed, the electromagnetic coils in the plurality of electromagnetic valves 106 are simultaneously energized. It should be noted that the electromagnetic valves 106 are normally open, and the plurality of electromagnetic valves 106 are closed simultaneously after being energized, thereby simultaneously blocking the compressed air inside the annular shunt pipe 110 from continuing to flow into the plurality of air cylinders 104, stopping the extension of the plurality of air cylinders 104, and keeping the plurality of pressing springs 105 at a constant and equal compression amount. At this time, the thrusts on the plurality of sliders two 102 are equal, and the side thrusts exerted by the plurality of outer rollers 6 on the outer side wall of the casing are also equal, further preventing deformation of the casing caused by uneven thrusts. During the welding process, the motor 201 of the control driving mechanism is operated to drive the driving pulley 202 to rotate, the driving pulley 202 drives the driven pulley 203 to rotate through the transmission belt, the driven pulley 203 drives the inner rollers 5 to rotate, the inner rollers 5 drive the lower end of one of the synchronous pulleys 7 to rotate through the connecting shaft 9, the synchronous pulley 7 drives the other synchronous pulleys 7 to rotate synchronously through the transmission effect of the synchronous belt 8, the plurality of synchronous pulleys 7 drive the plurality of inner rollers 5 to rotate synchronously through the corresponding connecting shaft 9, and the plurality of inner rollers 5 drive the casing to rotate through the friction force. During the rotation process, the plurality of inner rollers 5 and the plurality of outer rollers 6 can be rolled in sequence along the side wall of the casing, so as to keep the roundness of the casing and prevent local deformation of the casing caused by local heat generated during welding. The plurality of tensioning springs 14 of the plurality of tensioning mechanisms can exert a thrust on the support 12, the support 12 can exert a thrust on the tensioning pulley 13, and the sliding fit between the sleeve rod 10 and the telescopic rod 11 can make the support 12 and the tensioning pulley 13 move linearly. The plurality of tensioning pulleys 13 in the plurality of tensioning mechanisms can always press the outer side of the synchronous belt 8, the distance between the plurality of synchronous pulleys 7 changes when the plurality of synchronous pulleys 7 move with the slider one 3 and the inner roller 5, the plurality of tensioning mechanisms can always press the synchronous belt 8 on the outer side of the plurality of synchronous pulleys 7, so that the synchronous belt 8 and the plurality of synchronous pulleys 7 can keep stable engagement, ensuring the rotation synchronization of the plurality of synchronous pulleys 7, and ensuring the rotation synchronization of the plurality of inner rollers 5.

[0029] The above description allows a person skilled in the art to make or use the application. Numerous modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Therefore, the application is not to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A welding device for an engine casing support plate, comprising a base, characterized in that, The upper side of the base is provided with multiple sliding grooves. Each sliding groove is slidably connected to a slider. Each slider is fixed to a support plate on its upper side. One end of each support plate is rotatably connected to an inner roller, and the other end of each support plate is movably provided with an outer roller. It also includes multiple pressing mechanisms that apply a thrust to each outer roller; A clamping and separating mechanism that drives multiple sliders to move simultaneously; The pressing mechanism includes a slide groove 2 opened at one end of the support plate and a cylinder installed at one end of the support plate. Slider 2 and slider 3 are slidably connected to the inner side of slide groove 2. An outer roller is rotatably connected to the upper side of slider 2. Slider 2 and slider 3 are elastically connected by a pressing spring. The clamping and separating mechanism includes a gear disk rotatably connected to the inside of the base and multiple sliding pins fixed to one end of each slider. The gear disk has multiple inclined guide grooves inside, and each sliding pin is slidably connected to the inside of the multiple inclined guide grooves. A synchronous rotation mechanism is provided between multiple inner rollers. The synchronous rotation mechanism includes multiple connecting shafts that are rotatably connected through each slider. Each connecting shaft passes through and is fixed inside the corresponding inner roller. The lower end of each connecting shaft is fixed with a synchronous pulley. The multiple synchronous pulleys are connected by a synchronous belt drive. The mechanism also includes multiple tensioning mechanisms for adjusting the tension of the synchronous belt. It also includes an air source device for injecting compressed air into multiple cylinders. The air source device includes an air tank and an air pump located on the outside of the base. The air pump's outlet is connected to the inside of the air tank. The air tank's outlet is connected to an air pipe. One end of the air pipe is connected to an annular shunt pipe. A solenoid valve is connected to the annular shunt pipe at the position corresponding to each cylinder. One end of each solenoid valve is connected to the inside of the corresponding cylinder.

2. The engine casing support plate welding device according to claim 1, characterized in that: The clamping and separating mechanism also includes an electric telescopic rod installed inside the base and a rack slidably disposed inside the base. One end of the rack is fixedly connected to the telescopic end of the electric telescopic rod, and the rack meshes with the gear disc through teeth.

3. The engine casing support plate welding device according to claim 2, characterized in that: Two rack guide rods are fixed on the inner side of the base, and the rack slides on the outer side of the two rack guide rods.

4. The engine casing support plate welding device according to claim 1, characterized in that: The tensioning mechanism includes a sleeve rod fixed inside the base. A telescopic rod is slidably inserted into one end of the sleeve rod, and a bracket is fixed to one end of the telescopic rod. A tensioning wheel is rotatably connected to the inner side of the bracket, and one end of the bracket is elastically connected to one end of the sleeve rod through a tensioning spring.

5. The engine casing support plate welding device according to claim 1, characterized in that: One end of one of the support plates is provided with a drive mechanism, which includes a motor installed at one end of the support plate and a driven pulley fixed to the upper end of the inner roller. The drive end of the motor is fixed with a driving pulley, and the driving pulley and the driven pulley are connected by a transmission belt.

6. The engine casing support plate welding device according to claim 1, characterized in that: Each slider two has an internally threaded cylinder fixed on one side, and each slider three has a micro switch installed at one end. Each internally threaded cylinder has an adjusting screw rotatably connected through a threaded connection inside. Each micro switch is electrically connected to the solenoid valve at the corresponding position.

7. The engine casing support plate welding device according to claim 1, characterized in that: Multiple inner rollers and multiple outer rollers are made of rubber components.

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