Automatic material warehouse based on loading and unloading of manipulator

Abstract

The invention discloses an automatic material warehouse based on loading and unloading of a manipulator, and relates to the technical field of automatic material warehouses. According to the automatic material warehouse based on loading and unloading of the mechanical arm, the inclined faces of the opposite faces of the side baffles are inclined faces, the distance between the side baffles is gradually reduced from top to bottom, and the side rotating column inclines towards the center position of the material stacking plate from top to bottom. The inclined faces of the opposite faces of the side baffles are matched with the clamping jaw mechanism to grab materials and place the materials into the top of the stacking plate, the materials are guided, the materials are smoothly placed in the center position of the stacking plate, meanwhile, when the materials are driven by the conveying belt, the side rotating columns make contact with the materials, and the materials are conveyed to the conveying belt through matching of rotation and inclined installation of the side rotating columns. Moving materials are guided to be located at the center position, meanwhile, the friction force with the materials is reduced, and the materials are prevented from being blocked during storage.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automated warehouse, in particular to an automated warehouse based on mechanical arm loading and unloading. BACKGROUND

[0002] The automated warehouse is a modern warehousing system based on the combination of automatic equipment to realize the whole process of material "automatic warehousing, storage, picking and delivery" without or with few people management. The essence of the automated warehouse is the "industrial upgrading of warehousing". It solves the pain points of traditional warehousing such as "waste of space, low efficiency, dependence on manpower and chaotic management" through technology integration. It is one of the core infrastructure for modern manufacturing and logistics industry to realize "cost reduction, efficiency improvement and quality improvement". The automated warehouse based on mechanical arm loading and unloading is a material handling system based on the high-precision grabbing and positioning capability of the mechanical arm, combined with the vertical shelves and the conveying line on the basis of the traditional automated warehouse. When storing or exporting materials in the automated warehouse, the materials are usually exported or arranged for storage through the conveying belt. However, in the process of moving the materials, the position of the materials usually needs to be adjusted. When the friction between the guide and the materials is large during the adjustment, the materials are prone to jamming, causing the materials to accumulate and unable to be normally stored and exported. SUMMARY

[0003] To solve the above technical problems, the present application is implemented by the following technical scheme: an automated warehouse based on mechanical arm loading and unloading, comprising: a shelf and a storage mechanism, the storage mechanism is installed inside the shelf, and the storage mechanism is uniformly installed from top to bottom inside the shelf; a driving mechanism and a clamping jaw mechanism, the driving mechanism is installed on the outside of the shelf, and the clamping jaw mechanism is installed on the execution end of the driving mechanism; The storage mechanism includes a stacking plate, the two sides of the stacking plate are fixedly installed with side baffles, the opposite surfaces of the side baffles are inclined surfaces, the distance between the side baffles gradually decreases from top to bottom, the opposite surfaces of the side baffles are uniformly provided with rotating grooves, and the side rotating columns are rotatably installed at the rotating grooves of the side baffles. Through the inclined installation of the side baffles and the side rotating columns, the opposite surfaces of the side baffles and the clamping jaw mechanism are used to guide the materials when storing the materials, so that the materials are smoothly placed in the center position of the stacking plate. At the same time, when the materials are moved by the conveying belt, the side rotating columns are used to contact the materials, and the side rotating columns are rotatably and obliquely installed to guide the moving materials to the center position and reduce the friction with the materials, thereby avoiding the jamming of the materials during storage. The side rotating columns are inclined from top to bottom to the center position of the stacking plate, and the stacking plate is fixedly installed with a blocking plate at the end away from the driving mechanism.

[0004] Preferably, a rectangular groove is formed at the center of the top of the stacking plate, and a rotating shaft is rotatably installed at the rectangular groove of the stacking plate. The rotating shafts are evenly installed at the rectangular groove of the stacking plate, and a conveyor belt is installed between the rotating shafts. A first motor is fixedly installed at the outer end of the stacking plate away from the drive mechanism. The output end of the first motor is fixedly connected to one end of the rotating shaft. An end stop is fixedly installed at the top end of the stacking plate near the drive mechanism. The end stop restricts the material when it is discharged to prevent the material from falling directly. When storing material, it guides the material that has deviated from its position. The inclined surface contacts the bottom of the material, causing the material to tilt towards the side of the end stop, so that the conveyor belt can smoothly drive the material to move for storage. The side of the end stop near the end stop is an inclined surface.

[0005] Preferably, the drive mechanism includes side slot plates, which are fixedly installed on the outside of the shelf and symmetrically installed along the center of the shelf's axis. Slide grooves are formed on opposite sides of the side slot plates. A top plate is fixedly installed on the top of the side slot plates, and a second motor is fixedly installed on the top of the top plate. The second motor is symmetrically installed along the center of the top plate's axis. Screws are rotatably installed on the inner walls of each side slot plate, with the top ends of the screws fixedly connected to the output ends of the second motors. Threaded cylinders are threadedly connected to the outer sides of each screw. A horizontal plate is fixedly installed between the threaded cylinders. An inner sliding plate is fixedly installed at the end of the horizontal plate closest to the shelf. The inner sliding plate slides and the side groove plate slides together to provide support during loading and unloading. This prevents the weight of the material from being transferred to the screw during material handling, which could cause the screw to deform or bend, creating an obstruction between the screw and the threaded cylinder and preventing normal loading and unloading. Both ends of the inner sliding plate slide and the side groove plate slide together. A robotic arm is fixedly installed on the side of the horizontal plate away from the shelf.

[0006] Preferably, the gripper mechanism includes a connector head, which is fixedly connected to the execution end of the robotic arm. A slide plate is fixedly installed at the end of the connector head away from the robotic arm. Slide grooves are symmetrically formed on the outer side of the slide plate. A cylinder is fixedly installed on the side of the slide plate near the connector head. The cylinder is symmetrically installed along the center position of the axis of the slide plate. A slide rail is fixedly installed on the side of the slide plate away from the connector head. The slide rails are symmetrically installed along the center position of the axis of the slide plate. A sliding plate is slidably installed between the slide rails. Both ends of the sliding plate are provided with protrusions, and the protrusions are slidably adapted to the slide grooves of the slide plate.

[0007] Preferably, the output end of the cylinder is fixedly connected with the convex block of the sliding plate, the outer side of the sliding plate is fixedly installed with a side clamping plate, the end away from the sliding plate of the side clamping plate is fixedly installed with an end clamping strip, the end clamping strip is matched with the inner baffle, the end clamping strip contacts the corner of the box-shaped material, the box-shaped material is clamped and fixed at the corner, during carrying, the restriction of the inner baffle on the material is matched, the insufficient clamping friction is avoided, the rotation of the box-shaped material during clamping and carrying is avoided, and the material is prevented from falling off, the opposite surfaces of the end clamping strip are inclined surfaces, the opposite surfaces of the side clamping plate are fixedly installed with rubber plates, the rubber plates are uniformly installed on the opposite surfaces of the side clamping plate, and the inner baffle is fixedly installed on the side away from the end clamping strip of the opposite surface of the side clamping plate.

[0008] The application provides an automatic material warehouse based on mechanical arm loading and unloading. (1) the automatic material warehouse based on mechanical arm loading and unloading, the inclined surfaces on the opposite surfaces of the side baffle are matched with the inclined installation of the side rotating column, during storage of the material, the inclined surfaces on the opposite surfaces of the side baffle are matched with the clamping jaw mechanism to clamp and place the material on the top of the stacking plate, the material is guided to be smoothly placed in the center position of the stacking plate, during conveying of the material by the conveying belt, the side rotating column contacts the material, the rotation and inclined installation of the side rotating column are matched to guide the moving material to be in the center position, the friction with the material is reduced, and the material is prevented from being blocked during storage.

[0009] (2) the automatic material warehouse based on mechanical arm loading and unloading, the end blocking strip is matched with the material during discharge of the material, the material is guided to be placed in the position, the inclined surface contacts the bottom of the material, the material is inclined to one side of the blocking plate, and the conveying belt smoothly conveys the material.

[0010] (3) the automatic material warehouse based on mechanical arm loading and unloading, the inner sliding plate and the side groove plate are matched with the sliding groove, during loading and unloading of the material, the contact between the inner sliding plate and the sliding groove of the side groove plate provides supporting force, the gravity of the material is prevented from being completely transmitted to the screw rod during carrying of the material, the screw rod is prevented from being deformed and twisted, the screw rod and the threaded cylinder are prevented from being hindered, and normal loading and unloading are realized.

[0011] (4) the automatic material warehouse based on mechanical arm loading and unloading, the end clamping strip is matched with the inner baffle, the end clamping strip contacts the corner of the box-shaped material, the box-shaped material is clamped and fixed at the corner, during carrying, the restriction of the inner baffle on the material is matched, the insufficient clamping friction is avoided, the rotation of the box-shaped material during clamping and carrying is avoided, and the material is prevented from falling off. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 Structure diagram of the whole application; Figure 2 Structure side view of the whole application; Figure 3 Structure diagram of the storage mechanism of the application; Figure 4 Partial structure diagram of the storage mechanism of the application; Figure 5 Structure diagram of the driving mechanism of the application; Figure 6 Structure side view of the driving mechanism of the application; Figure 7 Structure diagram of the clamping jaw mechanism of the application; Figure 8 Structure side view of the clamping jaw mechanism of the application.

[0013] In the figure: 1, shelf; 2, storage mechanism; 3, driving mechanism; 4, clamping jaw mechanism; 21, side baffle; 22, conveying belt; 23, material blocking plate; 24, first motor; 25, stacking plate; 26, side rotating column; 27, rotating shaft; 28, end blocking strip; 31, side groove plate; 32, second motor; 33, top plate; 34, inner sliding plate; 35, screw rod; 36, mechanical arm; 37, cross plate; 38, threaded cylinder; 41, connecting head; 42, sliding groove plate; 43, air cylinder; 44, side clamping plate; 45, end clamping strip; 46, sliding rail; 47, sliding plate; 48, inner baffle; 49, rubber plate. DETAILED DESCRIPTION

[0014] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application.

[0015] First embodiment, please refer to Figures 1-4 The application provides a technical solution: An automatic material warehouse based on mechanical arm loading and unloading, comprising: The shelf 1 and the storage mechanism 2, the storage mechanism 2 is installed inside the shelf 1, and the storage mechanism 2 is uniformly installed from top to bottom inside the shelf 1; The driving mechanism 3 and the clamping jaw mechanism 4, the driving mechanism 3 is installed outside the shelf 1, and the clamping jaw mechanism 4 is installed at the execution end of the driving mechanism 3; The material storage mechanism 2 comprises a stacking plate 25, both sides of the stacking plate 25 are fixedly installed with side baffles 21, the opposite surfaces of the side baffles 21 are inclined surfaces, the distance between the side baffles 21 gradually decreases from top to bottom, the opposite surfaces of the side baffles 21 are uniformly provided with rotating grooves, when the materials on the conveying belt 22 move on the top of the stacking plate 25, the side baffles 21 on both sides cooperate with the side rotating columns 26, the side baffles 21 are obliquely installed with the side rotating columns 26, when storing, the materials are guided to be in the center position of the stacking plate 25, in the process of transmission, the side rotating columns 26 contact the materials to avoid the materials from deviating, the materials are arranged, when contacting the box-shaped materials, the inclined side rotating columns 26 contact the materials to reduce the contact surface and the friction, the side rotating columns 26 are rotatably installed at the rotating grooves of the side baffles 21, the side rotating columns 26 are inclined to the center position of the stacking plate 25 from top to bottom, and the stacking plate 25 is fixedly installed with a material blocking plate 23 at the end away from the driving mechanism 3 on the top.

[0016] A rectangular groove is formed at the center position of the top of the stacking plate 25, the stacking plate 25 is rotatably installed with rotating shafts 27 at the rectangular groove, the rotating shafts 27 are uniformly installed at the rectangular groove of the stacking plate 25, the conveying belt 22 is drivingly installed between the rotating shafts 27, the stacking plate 25 is fixedly installed with a first motor 24 at the end away from the driving mechanism 3 on the outside, the output end of the first motor 24 is fixedly connected with one end of the rotating shaft 27, when storing the materials, the first motor 24 drives the rotating shaft 27 to rotate, the rotating shaft 27 drives the conveying belt 22, the conveying belt 22 drives the materials to be close to the material blocking plate 23, when guiding the materials, the first motor 24 drives the materials to be close to an end blocking strip 28, the stacking plate 25 is fixedly installed with the end blocking strip 28 at the end close to the driving mechanism 3 on the top, the side close to the material blocking plate 23 of the end blocking strip 28 is an inclined surface.

[0017] The second embodiment is based on the first embodiment, please refer to Figures 5 to 6As shown, the driving mechanism 3 includes a side groove plate 31 fixedly installed on the outside of the shelf 1, and the side groove plate 31 is installed symmetrically along the central position of the axis of the shelf 1, the second motor 32 drives the screw rod 35 to rotate, the screw rod 35 is threadedly connected with the threaded cylinder 38, the cross plate 37 drives the mechanical arm 36 to move up and down, the mechanical arm 36 reaches the grabbing position of loading or unloading, the gripper mechanism 4 is driven by the mechanical arm 36 to grab the material, then the mechanical arm 36 continues to move to load or unload, the opposite side of the side groove plate 31 is provided with a sliding groove, the top of the side groove plate 31 is fixedly installed with a top plate 33, the top of the top plate 33 is fixedly installed with the second motor 32, the second motor 32 is installed symmetrically along the central position of the axis of the top plate 33, the inner wall of the side groove plate 31 is rotatably installed with the screw rod 35, the top end of the screw rod 35 is fixedly connected with the output end of the second motor 32, the outer side of the screw rod 35 is threadedly connected with the threaded cylinder 38, the threaded cylinder 38 is fixedly installed between the cross plate 37, one end of the cross plate 37 close to the shelf 1 is fixedly installed with an inner sliding plate 34, when the cross plate 37 moves between the side groove plates 31, the inner sliding plate 34 is driven to move, the two ends of the inner sliding plate 34 slide in the sliding grooves of the side groove plates 31, the two ends of the inner sliding plate 34 are slidably fitted with the sliding grooves of the side groove plates 31, the side away from the shelf 1 of the cross plate 37 is fixedly installed with the mechanical arm 36.

[0018] The third embodiment is based on the first and second embodiments, please refer to Figures 7 to 8 As shown, the gripper mechanism 4 includes a connecting head 41 fixedly connected with the execution end of the mechanical arm 36, one end of the connecting head 41 away from the mechanical arm 36 is fixedly installed with a sliding groove plate 42, the outer side of the sliding groove plate 42 is symmetrically provided with a sliding groove, and one side of the sliding groove plate 42 close to the connecting head 41 is fixedly installed with a pneumatic cylinder 43, the pneumatic cylinder 43 is installed symmetrically along the central position of the axis of the sliding groove plate 42, the side clamping plate 44 is driven by the mechanical arm 36 to clamp the two sides of the box-shaped material, then the output end of the pneumatic cylinder 43 is fixedly connected with the protrusions of the sliding plate 47, the sliding plate 47 slides under the limitation of the sliding rail 46 to move close to each other, in the process of moving close to each other, the rubber plates 49 on the opposite sides of the side clamping plate 44 contact with the two sides of the material, and the material is clamped under the increasing contact pressure, one side of the sliding groove plate 42 away from the connecting head 41 is fixedly installed with the sliding rail 46, the sliding rail 46 is installed symmetrically along the central position of the axis of the sliding groove plate 42, and the sliding plate 47 is slidably installed between the sliding rails 46, the two ends of the sliding plate 47 are provided with protrusions, and the protrusions are slidably fitted with the sliding grooves of the sliding groove plate 42.

[0019] The output end of the cylinder 43 is fixedly connected with the protrusion of the sliding plate 47, the outer side of the sliding plate 47 is fixedly installed with the side clamping plate 44, the end away from the sliding plate 47 of the side clamping plate 44 is fixedly installed with the end clamping strip 45, the opposite faces of the end clamping strip 45 are inclined, in the clamping process, the opposite faces of the end clamping strip 45 are in contact with the corner of the box-shaped material away from the side of the chute plate 42, and the inner baffle 48 blocks the material, so that the rotation of the material in the clamping and carrying process is limited, the opposite faces of the side clamping plate 44 are fixedly installed with the rubber plate 49, the rubber plate 49 is uniformly installed on the opposite faces of the side clamping plate 44, and the side away from the end clamping strip 45 of the opposite faces of the side clamping plate 44 is fixedly installed with the inner baffle 48.

[0020] In use, the gripper mechanism 4 is driven to move by the driving mechanism 3, the material is gripped by the gripper mechanism 4, the material is placed into the material storage mechanism 2 or taken out from the material storage mechanism 2 in cooperation with the driving mechanism 3, automatic storage of the material or automatic discharge of the material is realized, and meanwhile, when the material is stored, the material placed is arranged by the material storage mechanism 2.

[0021] In the material storage mechanism 2, when the material is stored, the first motor 24 drives the rotating shaft 27 to rotate, the rotating shaft 27 drives the conveyor belt 22, the conveyor belt 22 drives the material to be close to the material blocking plate 23, when the material is guided out, the first motor 24 drives the material to be close to the end clamping strip 28, when the material is moved on the top of the stacking plate 25 by the conveyor belt 22, the material is arranged by the cooperation of the side blocking plate 21 and the side rotating column 26, the opposite faces of the side blocking plate 21 are in contact with the side rotating column 26, the material placed is guided to be at the central position of the stacking plate 25 during storage, the side rotating column 26 is in contact with the material during transmission, so that the material is prevented from deviating, and the material is arranged, and meanwhile, when the box-shaped material is contacted, the inclined side rotating column 26 is in contact with the material, so that the contact area is reduced and the friction is reduced.

[0022] In the driving mechanism 3, the second motor 32 drives the screw rod 35 to rotate, the screw rod 35 is in threaded connection with the threaded cylinder 38, the horizontal plate 37 drives the mechanical arm 36 to move up and down, so that the mechanical arm 36 reaches the gripping position for feeding or discharging, the gripper mechanism 4 is driven by the mechanical arm 36 to grip the material, then the mechanical arm 36 is continuously driven to move, so that feeding or discharging is performed, and meanwhile, when the horizontal plate 37 moves between the side groove plates 31, the inner sliding plate 34 is driven, so that the two ends of the inner sliding plate 34 slide in the sliding grooves of the side groove plates 31.

[0023] When the gripper mechanism 4 reaches the material grabbing position, the side clamping plates 44 are driven by the mechanical arm 36 to be on both sides of the box-shaped material, and then the output end of the air cylinder 43 is fixedly connected with the protrusions of the sliding plate 47, so that the sliding plate 47 is driven to slide and approach each other under the limitation of the sliding rail 46. In the approaching process, the rubber plates 49 on the opposite sides of the side clamping plates 44 are in contact with both sides of the material under the condition of increasing contact pressure, and the material is clamped. At the same time, in the clamping process, the opposite side of the end clamping strip 45 is in contact with the corner of the side of the box-shaped material away from the sliding groove plate 42, and the inner baffle 48 blocks the material, so as to limit the rotation of the material in the clamping and carrying process.

[0024] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises... " does not, without more limitations, preclude the existence of further identical elements in the process, method, article, or apparatus that comprises the recited element.

[0025] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, alternatives, and variations can be made in the embodiments without departing from the spirit and scope of the present application as defined by the appended claims and their equivalents.

Claims

1. An automated material storage system based on robotic arm unloading, characterized in that, include: Shelf (1) and storage mechanism (2), wherein the storage mechanism (2) is installed inside the shelf (1) and the storage mechanism (2) is evenly installed from top to bottom inside the shelf (1); A drive mechanism (3) and a gripper mechanism (4) are provided, wherein the drive mechanism (3) is installed on the outside of the shelf (1) and the gripper mechanism (4) is installed on the execution end of the drive mechanism (3); The material storage mechanism (2) includes a stacking plate (25), and side baffles (21) are fixedly installed on both sides of the stacking plate (25). The opposite surfaces of the side baffles (21) are inclined, and the distance between the side baffles (21) gradually decreases from top to bottom. The opposite surfaces of the side baffles (21) are evenly provided with rotating grooves, and side rotating columns (26) are rotatably installed at the rotating grooves of the side baffles (21). The side rotating columns (26) are inclined from top to bottom toward the center of the stacking plate (25). A baffle plate (23) is fixedly installed at the top of the stacking plate (25) away from the drive mechanism (3).

2. The automated material storage system based on robotic arm unloading according to claim 1, characterized in that: A rectangular groove is provided at the center of the top of the stacking plate (25), and a rotating shaft (27) is rotatably installed at the rectangular groove of the stacking plate (25). The rotating shafts (27) are evenly installed at the rectangular groove of the stacking plate (25), and a conveyor belt (22) is installed between the rotating shafts (27).

3. An automated material storage system based on robotic arm unloading according to claim 2, characterized in that: A first motor (24) is fixedly installed on the outer side of the stacking plate (25) away from the drive mechanism (3). The output end of the first motor (24) is fixedly connected to one end of the rotating shaft (27). An end stop (28) is fixedly installed on the top of the stacking plate (25) near the drive mechanism (3). The side of the end stop (28) near the stop plate (23) is an inclined surface.

4. An automated material storage system based on robotic arm unloading as described in claim 1, characterized in that: The drive mechanism (3) includes a side groove plate (31), which is fixedly installed on the outside of the shelf (1) and is symmetrically installed along the center position of the axis of the shelf (1). The opposite surfaces of the side groove plate (31) are provided with sliding grooves.

5. An automated material storage system based on unloading by a robotic arm according to claim 4, characterized in that: A top plate (33) is fixedly installed on the top of the side slot plate (31), and a second motor (32) is fixedly installed on the top of the top plate (33). The second motor (32) is symmetrically installed along the center of the axis of the top plate (33). Screws (35) are rotatably installed on the inner wall of the side slot plate (31), and the top end of the screws (35) is fixedly connected to the output end of the second motor (32).

6. An automated material storage system based on unloading by a robotic arm according to claim 5, characterized in that: The screw (35) is threaded with threaded cylinders (38) on its outer side. A horizontal plate (37) is fixedly installed between the threaded cylinders (38). An inner slide plate (34) is fixedly installed on the end of the horizontal plate (37) near the shelf (1). The two ends of the inner slide plate (34) are slidably adapted to the slide groove of the side groove plate (31). A robotic arm (36) is fixedly installed on the side of the horizontal plate (37) away from the shelf (1).

7. An automated material storage system based on unloading by a robotic arm according to claim 6, characterized in that: The gripper mechanism (4) includes a connector (41), which is fixedly connected to the execution end of the robotic arm (36). A slide plate (42) is fixedly installed at the end of the connector (41) away from the robotic arm (36). Slide grooves are symmetrically opened on the outer side of the slide plate (42), and a cylinder (43) is fixedly installed on the side of the slide plate (42) near the connector (41). The cylinder (43) is symmetrically installed along the center position of the axis of the slide plate (42).

8. An automated material storage system based on unloading by a robotic arm according to claim 7, characterized in that: A slide rail (46) is fixedly installed on the side of the slide plate (42) away from the connector (41). The slide rail (46) is symmetrically installed along the center position of the axis of the slide plate (42), and a slide plate (47) is slidably installed between the slide rails (46). Both ends of the slide plate (47) are provided with protrusions, and the protrusions are slidably adapted to the slide groove of the slide plate (42).

9. An automated material storage system based on unloading by a robotic arm according to claim 8, characterized in that: The output end of the cylinder (43) is fixedly connected to the protrusion of the slide plate (47). A side clamp (44) is fixedly installed on the outer side of the slide plate (47). An end clamp (45) is fixedly installed on the end of the side clamp (44) away from the slide plate (47). The opposite surfaces of the end clamp (45) are all inclined surfaces.

10. An automated material storage system based on unloading by a robotic arm according to claim 9, characterized in that: A rubber plate (49) is fixedly installed on the opposite side of the side clamp (44). The rubber plate (49) is evenly installed on the opposite side of the side clamp (44). An inner baffle (48) is fixedly installed on the side of the opposite side of the side clamp (44) away from the end clamp (45).

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