Wet spraying manipulator

Abstract

The utility model relates to the technical field of wet spraying manipulator structures, in particular to a wet spraying manipulator, which comprises a first-stage oil cylinder, a second-stage oil cylinder and a conveying swing mechanism, the first-stage oil cylinder is mounted on an extension arm of a mobile machine through a fixing cover, the second-stage oil cylinder is connected with an output shaft of the first-stage oil cylinder through a connecting seat, and the conveying swing mechanism is mounted on the second-stage oil cylinder. An output shaft of the second-stage oil cylinder is connected with the conveying swing mechanism through a connecting arm, and is characterized in that a connecting cover covering the outer side of the output shaft of the first-stage oil cylinder is arranged between the output shaft of the first-stage oil cylinder and the connecting seat, and an axial limiting mechanism for increasing the connecting strength of the second-stage oil cylinder is arranged between the connecting seat and the second-stage oil cylinder; the connecting structure has the advantages of simple structure, high connecting strength, stable connecting structure, long service life and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of wet spraying manipulator structures, in particular to a wet spraying manipulator with a simple structure, high connection strength, stable connection structure and long service life. Background Art

[0002] As we all know, concrete spraying robots are widely used in construction. They use compressed air or other power sources to transport a precisely proportioned mixture through a pipe and spray it at high speed onto the surface where it solidifies, forming a concrete support layer. Shotcrete technology is simple, cost-effective, and widely applicable, making it a vital tool in various construction applications.

[0003] At present, the mechanism for controlling the rotation of the injection head provided in the existing concrete injection robot is a rotating swing mechanism, which includes a primary oil cylinder, a secondary oil cylinder and a conveying swing mechanism. The primary oil cylinder is installed on the extension arm of the mobile machine, the secondary oil cylinder is connected to the output shaft of the primary oil cylinder, the output shaft of the secondary oil cylinder is connected to the conveying swing mechanism, the primary oil cylinder drives the secondary oil cylinder and the conveying swing mechanism to rotate together, the secondary oil cylinder drives the conveying swing mechanism to rotate, the conveying swing mechanism includes a swing motor, a swing fixing frame, and a conveying pipe, the swing fixing frame is connected to the output shaft of the secondary oil cylinder, and the swing motor is fixed on the swing fixing frame. The output shaft of the swing motor is fixedly connected to the conveying pipe. Since the wet spraying robot requires three output shafts to drive the final conveying pipe to rotate, the output shaft of the swing motor needs to withstand the gravity and shaking force of the conveying pipe, the output shaft of the secondary oil cylinder needs to withstand the gravity and shaking force of the conveying swing mechanism, and the output shaft of the primary oil cylinder needs to withstand the gravity and shaking force of the secondary oil cylinder and the conveying swing mechanism. In addition, there is a lot of dust in the working environment. Once the output shaft enters the dust, it will cause jamming. Moreover, the output directions of the three output shafts are also different. Therefore, it will cause problems such as low connection strength, unstable operation, and short service life. Summary of the Invention

[0004] The purpose of the utility model is to solve the deficiencies of the above-mentioned prior art and to provide a wet spraying manipulator with a simple structure, high connection strength, stable connection structure and long service life.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A wet spraying manipulator, the rotating and swinging mechanism includes a primary oil cylinder, a secondary oil cylinder and a conveying swing mechanism, the primary oil cylinder is installed on the extension arm of the mobile machine via a fixed cover, the secondary oil cylinder is connected to the output shaft of the primary oil cylinder via a connecting seat, and the output shaft of the secondary oil cylinder is connected to the conveying swing mechanism via a connecting arm. It is characterized in that a connecting cover covering the outside of the output shaft of the primary oil cylinder is provided between the output shaft of the primary oil cylinder and the connecting seat, and an axial limiting mechanism for increasing the connection strength of the secondary oil cylinder is installed between the connecting seat and the secondary oil cylinder.

[0007] The connecting cover described in the utility model includes an annular cover and a circular sealing plate. The end of the annular cover is integrally connected to the circular sealing plate. Circular holes are evenly distributed on the circumference of the circular sealing plate. Connecting holes corresponding to the threaded holes are evenly distributed on the connecting seat. The connecting bolts pass through the connecting holes on the connecting seat and the circular holes on the circular sealing plate and are fixedly connected to the output shaft of the first-stage oil cylinder. The annular cover is on the outside of the fixed cover and is sealed and rotatably connected to the fixed cover.

[0008] The end of the fixed cover described in the utility model is connected to the annular sleeve via a locking bolt, the outer edge of the annular sleeve is provided with a sliding groove, a guide ring is installed in the sliding groove, the guide ring is slidably connected to the inner wall of the annular cover, and through holes are evenly distributed in the circumferential direction of the end of the annular sleeve. The locking bolt passes through the through hole at the end of the annular sleeve and is connected to the screw hole provided at the end of the fixed cover. The annular sleeve is integrally connected to the first-stage oil cylinder.

[0009] The outer side of the end portion of the fixed cover of the utility model is provided with an annular sealing groove, a sealing ring is sleeved in the sealing groove, and the sealing ring and the inner wall of the annular cover are in a sealed state.

[0010] The axial limiting mechanism described in the utility model includes an axial bolt, an axial nut, an L-shaped plate, and an axial shield. An axial limiting hole is provided in the middle of the output shaft of the secondary oil cylinder, and an axial bolt is provided in the axial limiting hole. The axial bolt extends into the upper end of the axial limiting hole of the output shaft and extends out through the lower end of the axial limiting hole, then passes through the positioning hole of the conveying swing mechanism and is connected with the axial nut. The bolt head of the axial bolt is circular, and an L-shaped plate is provided at the upper end of the axial bolt. The vertical part of the L-shaped plate is fixedly connected to the connecting seat, and the transverse part of the L-shaped plate is connected to the axial shield, and the axial shield covers the bolt head of the axial bolt.

[0011] The bolt head of the axial bolt of the utility model is provided with an inner hexagonal groove, which is convenient for locking and positioning the connecting bolt and the connecting nut.

[0012] The L-shaped plate described in the utility model is provided with a mounting hole on the transverse part, the upper end of the axial shield is connected to the connecting disc, the lower end of the axial shield passes through the mounting hole and covers the bolt head, and the connecting disc at the upper end of the axial shield is detachably connected to the transverse part of the L-shaped plate via bolts.

[0013] The connecting seat of the utility model is configured as a first U-shaped plate, the open end of the first U-shaped plate is fixedly connected to the secondary oil cylinder, and the closed end of the first U-shaped plate is fixedly connected to the output shaft of the primary oil cylinder.

[0014] The connecting arm described in the present invention is configured as a second U-shaped plate, and the two arm ends of the open end of the second U-shaped plate are respectively fixedly connected to the upper and lower ends of the output shaft of the secondary oil cylinder, and the lower end of the second U-shaped plate fixedly connected to the lower end of the output shaft of the secondary oil cylinder is fixedly connected to the conveying swing mechanism.

[0015] The inner wall of the axial shield of the utility model is connected to the bolt head of the axial bolt in a sealing and rotatable manner.

[0016] The conveying swing mechanism described in the utility model includes a swing motor, a swing fixing frame, and a conveying pipe. The swing fixing frame includes an upper fixing frame, a lower fixing frame, and a coupling. The upper fixing frame is N-shaped, and the lower fixing frame is U-shaped. The upper fixing frame and the lower fixing frame are buckled together. A positioning hole is provided on the upper cross arm of the upper fixing frame. The rear side arm of the upper fixing frame is rotatably connected to the rear side arm of the lower fixing frame via a coupling. The front side arm of the upper fixing frame fixes the swing motor. The output shaft of the swing motor is rotatably connected to the front side arm of the lower fixing frame. The lower cross arm of the lower fixing frame is fixedly connected to the conveying pipe. A motor shield is provided on the outside of the output shaft of the swing motor. One end of the motor shield is fixedly connected to the outer wall of the swing motor, and the other end of the motor shield extends to the front side wall position of the lower fixing frame to realize the sealing of the output shaft of the swing motor.

[0017] The end of the output shaft of the rocking motor described in the present invention is provided with an output disk, which is fixedly connected to the output shaft of the rocking motor via a key. The output disk includes a sleeve and a connecting disk, the sleeve and the connecting disk are fixedly connected as a whole, the inner wall of the sleeve is fixedly connected with an insertion key, a key slot is provided on the output shaft of the rocking motor, the sleeve is inserted into the key slot of the rocking motor via the insertion key, the connecting disk is connected to the support sleeve, a socket is provided on the front side wall of the lower fixing frame, a plug is provided in the socket, the plug includes an integrally connected plug rod and a plug disk, after the front side wall of the lower fixing frame is docked with the support sleeve, the plug rod of the plug is inserted into the support sleeve through the socket, the plug disk is fixedly connected to the lower fixing frame via a bolt, and the other end of the motor shield extends to the side of the connecting disk and is in contact with the connecting disk support.

[0018] The motor shield described in the utility model is respectively provided with motor sealing grooves on the front and rear sides, and a sealing ring is provided in the motor sealing groove. The rear end of the motor shield is sealed and connected to the side wall of the swing motor, and the front end of the motor shield is sealed and rotatably connected to the outer wall of the sleeve of the output disk to prevent dust from entering the interior of the swing motor.

[0019] The rear side wall of the lower fixing frame is installed on the front side of the rear side wall of the upper fixing frame, the front side wall of the lower fixing frame is installed on the front side of the front side wall of the upper fixing frame, and the swing motor is fixed on the front side wall of the upper fixing frame.

[0020] Due to the adoption of the above structure, the utility model has the advantages of simple structure, high connection strength, stable connection structure, long service life, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of the present utility model.

[0022] Figure 2 yes Figure 1 Sectional view.

[0023] Figure 3 yes Figure 1 Schematic diagram of the structure of the central axial bolt.

[0024] Figure 4 It is a structural diagram of the conveying swing mechanism of the utility model.

[0025] Figure 5 yes Figure 4 A partial enlarged view of .

[0026] Figure 6 This is a diagram showing the connection relationship between the first-stage oil cylinder and the second-stage oil cylinder of the utility model.

[0027] Figure 7 yes Figure 6 Schematic diagram of the structure without connection cover.

[0028] Figure 8 yes Figure 6 Schematic diagram of the structure of the connection cover. DETAILED DESCRIPTION

[0029] The present invention is further described below with reference to the accompanying drawings:

[0030] As shown in the accompanying drawings, a wet spraying manipulator, the rotating and swinging mechanism includes a primary oil cylinder 1, a secondary oil cylinder 2 and a conveying swing mechanism, the primary oil cylinder 1 is installed on the extension arm of the mobile machine via a fixed cover 3, the secondary oil cylinder 2 is connected to the output shaft of the primary oil cylinder 1 via a connecting seat, and the output shaft of the secondary oil cylinder 2 is connected to the conveying swing mechanism via a connecting arm, which is characterized in that a connecting cover 4 covering the outside of the output shaft of the primary oil cylinder 1 is provided between the output shaft of the primary oil cylinder 1 and the connecting seat, and an axial limiting mechanism for increasing the connection strength of the secondary oil cylinder 2 is installed between the connecting seat and the secondary oil cylinder 2.

[0031] Furthermore, the connecting cover 4 includes an annular cover 5 and a circular sealing plate 6. The end of the annular cover 5 is integrally connected to the circular sealing plate 6. Circular holes are evenly distributed on the circumference of the circular sealing plate 6. Connecting holes corresponding to the threaded holes are evenly distributed on the connecting seat. The connecting bolts 7 pass through the connecting holes on the connecting seat and the circular holes on the circular sealing plate 6 and are fixedly connected to the output shaft of the first-stage oil cylinder 1. The annular cover 5 covers the outside of the fixed cover 3 and is sealed and rotatably connected to the fixed cover 3.

[0032] Furthermore, the end of the fixed cover 3 is connected to the annular sleeve 9 via a locking bolt 8. A sliding groove 10 is provided on the outer edge of the annular sleeve 9. A guide ring is installed in the sliding groove 10. The guide ring is slidably connected to the inner wall of the annular cover 5. Through holes are evenly distributed in the circumferential direction of the end of the annular sleeve 9. The locking bolt 8 passes through the through hole at the end of the annular sleeve 9 and is connected to the screw hole provided at the end of the fixed cover 3. The annular sleeve is integrally connected to the first-stage oil cylinder.

[0033] Furthermore, an annular sealing groove 11 is provided on the outer side of the end of the fixed cover 3 , and a sealing ring is sleeved in the sealing groove. The sealing ring and the inner wall of the annular cover 5 are in a sealed state.

[0034] Furthermore, the axial limiting mechanism includes an axial bolt 12, an axial nut 13, an L-shaped plate 14, and an axial shield 15. An axial limiting hole 16 is provided in the middle of the output shaft of the secondary oil cylinder 2, and an axial bolt 12 is provided in the axial limiting hole 16. The axial bolt 12 extends through the upper end of the axial limiting hole 16 of the output shaft and extends out through the lower end of the axial limiting hole 16, then passes through the positioning hole of the conveying swing mechanism and is connected to the axial nut 13. The bolt head of the axial bolt 12 is circular, and an L-shaped plate 14 is provided at the upper end of the axial bolt 12. The vertical part of the L-shaped plate 14 is fixedly connected to the connecting seat, and the transverse part of the L-shaped plate 14 is connected to the axial shield 15. The axial shield 15 covers the bolt head of the axial bolt 12.

[0035] Furthermore, a hexagonal groove 17 is provided on the bolt head of the axial bolt 12 to facilitate the locking and positioning of the connecting bolt 7 and the connecting nut.

[0036] Furthermore, the transverse portion of the L-shaped plate 14 is provided with a mounting hole, the upper end of the axial shield 15 is connected to the connecting disc 18, the lower end of the axial shield 15 passes through the mounting hole and covers the bolt head, and the connecting disc 18 at the upper end of the axial shield 15 is detachably connected to the transverse portion of the L-shaped plate 14 via bolts.

[0037] Furthermore, the connecting seat is configured as a first U-shaped plate 19 , the open end of the first U-shaped plate 19 is fixedly connected to the secondary oil cylinder 2 , and the closed end of the first U-shaped plate 19 is fixedly connected to the output shaft of the primary oil cylinder 1 .

[0038] Furthermore, the connecting arm is set as a second U-shaped plate 20, and the two arm ends of the open end of the second U-shaped plate 20 are respectively fixedly connected to the upper and lower ends of the output shaft of the secondary oil cylinder 2, and the lower end of the second U-shaped plate 20 fixedly connected to the lower end of the output shaft of the secondary oil cylinder 2 is fixedly connected to the conveying swing mechanism.

[0039] Furthermore, the inner wall of the axial shield 15 is rotatably connected to the bolt head of the axial bolt 12 in a sealed manner.

[0040] Furthermore, the conveying swing mechanism includes a swing motor 21, a swing fixing frame, and a conveying pipe 22. The swing fixing frame includes an upper fixing frame 23, a lower fixing frame 24, and a coupling 25. The upper fixing frame 23 is N-shaped, and the lower fixing frame 24 is U-shaped. The upper fixing frame 23 and the lower fixing frame 24 are buckled together. A positioning hole is provided on the upper cross arm of the upper fixing frame 23. The rear side arm of the upper fixing frame 23 is rotatably connected to the rear side arm of the lower fixing frame 24 via the coupling 25. The front side arm of the upper fixing frame 23 fixes the swing motor 21. The output shaft of the swing motor 21 is rotatably connected to the front side arm of the lower fixing frame 24. The lower cross arm of the lower fixing frame 24 is fixedly connected to the conveying pipe 22. A motor shield 26 is provided on the outside of the output shaft of the swing motor 21. One end of the motor shield 26 is fixedly connected to the outer wall of the swing motor 21, and the other end of the motor shield 26 extends to the front side wall position of the lower fixing frame 24 to realize the sealing of the output shaft of the swing motor 21.

[0041] Furthermore, an output disk is provided at the end of the output shaft of the swing motor 21, and the output disk is fixedly connected to the output shaft of the swing motor 21 via a key. The output disk includes a sleeve 27 and a connecting disk 28. The sleeve 27 is fixedly connected to the connecting disk 28 as a whole. The inner wall of the sleeve 27 is fixedly connected with an insert key. A key slot is provided on the output shaft of the swing motor 21. The sleeve 27 is inserted into the key slot of the swing motor 21 via the insert key. The connecting disk 28 is connected to the support sleeve 32. A socket is provided on the front side wall of the lower fixed frame 24, and a plug is provided in the socket. The plug includes an integrally connected rod 29 and a plug disk 30. After the front side wall of the lower fixed frame 24 is docked with the support sleeve 32, the plug rod 29 of the plug is inserted into the support sleeve 32 through the socket, and the plug disk 30 is fixedly connected to the lower fixed frame 24 via bolts. The other end of the motor shield 26 extends to the side of the connecting disk 28 and is in contact with the support of the connecting disk 28.

[0042] Furthermore, motor sealing grooves 31 are respectively provided on the front and rear sides of the motor shield 26, and a sealing ring is provided in the motor sealing groove 31. The rear end of the motor shield 26 is sealed and connected to the side wall of the swing motor 21, and the front end of the motor shield 26 is sealed and rotatably connected to the outer wall of the sleeve 27 of the output disk to prevent dust from entering the interior of the swing motor 21.

[0043] Furthermore, the rear side wall of the lower fixing frame 24 is installed on the front side of the rear side wall of the upper fixing frame 23 , the front side wall of the lower fixing frame 24 is installed on the front side of the front side wall of the upper fixing frame 23 , and the swing motor 21 is fixed on the front side wall of the upper fixing frame 23 .

[0044] When installing the utility model,

[0045] Installation of the first-stage oil cylinder 1: First, put the fixed cover 3 on the outside of the first-stage oil cylinder 1, and the fixed cover 3 is fixedly connected to the first-stage oil cylinder 1. The rear end of the fixed cover 3 is integrally connected with a flange. The rear end of the fixed cover 3 is connected to the extension arm of the mobile machinery through the flange and fixing bolts. Then the front end of the fixed cover 3 is connected to the annular sleeve 9 through the locking bolt 8, and a guide ring is installed in the slide groove 10 of the annular sleeve 9. A sealing ring is put in the annular sealing groove 11 at the front end of the fixed cover 3. The sealing ring is an elastic rubber sealing ring. The annular cover 5 and the circular sealing plate 6 are an integrated connection structure. The annular cover 5 covers the sealing ring and the guide ring. The first U-shaped plate 19 is placed on the end of the circular sealing plate 6. The connecting hole of the first U-shaped plate 19 corresponds to the circular hole of the circular sealing plate 6. Then the connecting bolt 7 passes through the connecting hole on the first U-shaped plate 19, the circular hole on the circular sealing plate 6 and is fixedly connected to the output end of the first-stage oil cylinder 1, thereby completing the first-stage oil cylinder 1 and the mobile machinery. The output end of the extension arm of the dynamic machinery is connected, and the secondary oil cylinder 2 is subsequently connected to the first U-shaped plate 19. Since the structure is provided with an integrated structure of the annular cover 5 and the circular sealing plate 6, the output end of the primary oil cylinder 1 is protected by the annular cover 5 and the circular sealing plate 6, and the combination of the sealing ring and the guide ring prevents external dust from entering the shaft of the output end of the primary oil cylinder 1, avoids the jamming phenomenon, and increases the service life of the primary oil cylinder 1. At the same time, since the annular cover 5 covers the outside of the fixed cover 3, when the secondary oil cylinder 2 generates pressure on the output bearing of the primary oil cylinder 1, the annular cover 5 can better protect the output shaft of the primary oil cylinder 1, avoid all the pressure being applied to the output shaft, protect the entire primary oil cylinder 1, and make the structure more stable; the above-mentioned guide ring is an annular structure made of nylon and glass fiber, and the annular sleeve is integrally connected to the primary oil cylinder to connect the primary oil cylinder to the fixed cover.

[0046] Installation of the first-stage oil cylinder 1 and the second-stage oil cylinder 2: Fix the output shaft of the first-stage oil cylinder 1 to the closed end of the first U-shaped plate 19, and fix the two arms of the open end of the first U-shaped plate 19 to the cylinder wall of the second-stage oil cylinder 2 respectively. Then fix the two arms of the open end of the second U-shaped plate 20 to the upper and lower ends of the output shaft of the second-stage oil cylinder 2 respectively. At the same time, fix the fixing frame of the conveying swing mechanism to the arms at the lower end of the second U-shaped plate 20 with bolts. Then, insert the axial bolt 12 through the upper end of the axial limiting hole 16 of the output shaft of the second-stage oil cylinder 2, and then pass through the lower end of the axial limiting hole 16 of the output shaft of the second-stage oil cylinder 2 through the connecting hole on the fixing frame of the conveying swing mechanism and then lock it with the axial nut 13. Since the bolt head of the axial bolt 12 is round and has an inner hexagonal groove 17, it is easy to install with a wrench. Insert the inner hexagonal groove 17 to lock the axial bolt 12 and the axial nut 13, and then insert the axial shield 15 into the transverse part of the L-shaped plate 14. The axial shield 15 is sleeved on the bolt head of the axial bolt 12 and is rotatably connected to the bolt head. The connecting plate 28 at the upper end of the axial shield 15 is locked with the transverse part of the L-shaped plate 14 by bolts, and finally the fixation of the secondary oil cylinder 2 is realized. Since the output shaft of the secondary oil cylinder 2 is provided with an axial limiting hole 16 for the connecting bolt 7 to pass through, the axial bolt 12 can be tightly inserted into the axial limiting hole 16 to avoid shaking between the output shaft of the secondary oil cylinder 2 and the axial bolt 12, which can further ensure the vertical connection strength of the secondary oil cylinder 2, and finally achieve the performance of high overall connection strength and stable connection structure of the secondary oil cylinder 2;

[0047] The connection between the secondary oil cylinder 2 and the conveying swing mechanism: the upper cross arm of the upper fixed frame 23 is connected to the output shaft of the secondary oil cylinder 2, and the rear side of the rear side wall of the lower fixed frame 24 is rotatably connected to the front side of the rear side wall of the upper fixed frame 23 via the coupling 25. The swing motor 21 is fixed to the front side wall of the upper fixed frame 23, and the output shaft of the swing motor 21 extends out of the front side wall of the upper fixed frame 23. A motor shield 26 is sleeved on the output shaft of the swing motor 21, and the rear end of the motor shield 26 is sealed with the side wall of the swing motor 21. A sleeve 27 is sleeved on the end of the output shaft of the swing motor 21, and the sleeve 27 extends into the inside of the shield and is fixedly connected to the output shaft of the swing motor 21. The rear end of the sleeve 27 is connected to the connecting plate 28, and the front end of the motor shield 26 extends to the side wall position of the connecting plate 28. The motor shield 26 protects the output shaft of the swing motor 21 from dust. Enter, and at the same time, the front end of the motor shield 26 extends to the position of the connecting plate 28, so that the motor shield 26 can also prevent the conveying pipe 22 from shaking and thus causing the output shaft of the swing motor 21 to shake, and then the support sleeve 32 and the front side wall of the lower fixing frame 24 are respectively aligned with the output shaft position of the swing motor 21, and the plug rod 29 of the plug is inserted into the position of the support sleeve 32, and then the plug plate 30 is fixedly connected to the front side wall of the lower fixing frame 24 by bolts, and finally the conveying pipe 22 is fixed to the lower cross arm of the lower fixing frame 24 by the connecting rod. Since the swing fixing frame includes the upper fixing frame 23 and the lower fixing frame 24, the upper fixing frame 23 and the lower fixing frame 24 are buckled and rotatably connected, thereby increasing the flipping stability of the entire conveying swing mechanism. The structure of the shield not only ensures the flipping stability, but also increases the sealing of the output shaft of the swing motor 21;

[0048] Therefore, the wet spraying robot connected by the above structure has a better dust-proof effect on the output shaft, no jamming phenomenon will occur, the overall connection strength is high, and the structure is more stable. Due to the adoption of the above structure, the utility model has the advantages of simple structure, high connection strength, stable connection structure, and long service life.

Claims

1. A wet spraying manipulator, comprising a primary oil cylinder, a secondary oil cylinder, and a conveying swing mechanism, wherein the primary oil cylinder is mounted on the extension arm of the mobile machine via a fixed cover, the secondary oil cylinder is connected to the output shaft of the primary oil cylinder via a connecting seat, and the output shaft of the secondary oil cylinder is connected to the conveying swing mechanism via a connecting arm, characterized in that A connecting cover is provided between the output shaft of the first-stage oil cylinder and the connecting seat, and an axial limiting mechanism for increasing the connection strength of the second-stage oil cylinder is installed between the connecting seat and the second-stage oil cylinder.

2. A wet spraying robot according to claim 1, characterized in that The connecting cover includes an annular cover and a circular sealing plate. The end of the annular cover is integrally connected to the circular sealing plate. Circular holes are evenly distributed on the circumference of the circular sealing plate. Connecting holes corresponding to the threaded holes are evenly distributed on the connecting seat. The connecting bolts pass through the connecting holes on the connecting seat and the circular holes on the circular sealing plate and are fixedly connected to the output shaft of the first-stage oil cylinder. The annular cover is on the outside of the fixed cover and is sealed and rotatably connected to the fixed cover.

3. A wet spraying robot according to claim 1, characterized in that The end of the fixed cover is connected to the annular sleeve via a locking bolt. A sliding groove is provided on the outer edge of the annular sleeve. A guide ring is installed in the sliding groove. The guide ring is slidably connected to the inner wall of the annular cover. Through holes are evenly distributed in the circumferential direction of the end of the annular sleeve. The locking bolt passes through the through hole at the end of the annular sleeve and is connected to the screw hole at the end of the fixed cover. The annular sleeve is integrally connected to the first-stage oil cylinder.

4. A wet spraying robot according to claim 1, characterized in that An annular sealing groove is provided on the outer side of the end portion of the fixed cover. A sealing ring is sleeved in the sealing groove. The sealing ring and the inner wall of the annular cover are in a sealed state.

5. A wet spraying robot according to claim 1, characterized in that The axial limiting mechanism includes an axial bolt, an axial nut, an L-shaped plate, and an axial shield. An axial limiting hole is provided in the middle of the output shaft of the secondary oil cylinder, and an axial bolt is provided in the axial limiting hole. The axial bolt extends through the upper end of the axial limiting hole of the output shaft and extends out through the lower end of the axial limiting hole, then passes through the positioning hole of the conveying swing mechanism and is connected to the axial nut. The bolt head of the axial bolt is circular, and an L-shaped plate is provided at the upper end of the axial bolt. The vertical part of the L-shaped plate is fixedly connected to the connecting seat, and the transverse part of the L-shaped plate is connected to the axial shield, and the axial shield covers the bolt head of the axial bolt.

6. A wet spraying robot according to claim 5, characterized in that The transverse part of the L-shaped plate is provided with a mounting hole, the upper end of the axial shield is connected to the connecting disc, the lower end of the axial shield passes through the mounting hole and covers the bolt head, and the connecting disc at the upper end of the axial shield is detachably connected to the transverse part of the L-shaped plate via bolts.

7. A wet spraying robot according to claim 1, characterized in that The conveying swing mechanism includes a swing motor, a swing fixing frame, and a conveying pipe. The swing fixing frame includes an upper fixing frame, a lower fixing frame, and a coupling. The upper fixing frame is N-shaped and the lower fixing frame is U-shaped. The upper fixing frame and the lower fixing frame are buckled together. A positioning hole is provided on the upper cross arm of the upper fixing frame. The rear side arm of the upper fixing frame is rotatably connected to the rear side arm of the lower fixing frame through a coupling. The front side arm of the upper fixing frame fixes the swing motor. The output shaft of the swing motor is rotatably connected to the front side arm of the lower fixing frame. The lower cross arm of the lower fixing frame is fixedly connected to the conveying pipe. A motor shield is provided on the outside of the output shaft of the swing motor. One end of the motor shield is fixedly connected to the outer wall of the swing motor, and the other end of the motor shield extends to the front side wall of the lower fixing frame to realize the sealing of the output shaft of the swing motor.

8. A wet spraying robot according to claim 7, characterized in that The end of the output shaft of the swing motor is provided with an output disk, and the output disk is fixedly connected to the output shaft of the swing motor via a key. The output disk includes a sleeve and a connecting disk, the sleeve is fixedly connected to the connecting disk as a whole, and the inner wall of the sleeve is fixedly connected to the insertion key. A key slot is provided on the output shaft of the swing motor, and the sleeve is inserted into the key slot of the swing motor via the insertion key. The connecting disk is connected to the support sleeve, and a socket is provided on the front side wall of the lower fixing frame. A plug is provided in the socket, and the plug includes an integrally connected plug rod and a plug disk. After the front side wall of the lower fixing frame is docked with the support sleeve, the plug rod of the plug is inserted into the support sleeve through the socket, and the plug disk is fixedly connected to the lower fixing frame via a bolt, and the other end of the motor shield extends to the side of the connecting disk and contacts the connecting disk support.

9. A wet spraying robot according to claim 7, characterized in that The motor shield is provided with motor sealing grooves on the front and rear sides respectively, and a sealing ring is provided in the motor sealing groove. The rear end of the motor shield is sealed and connected to the side wall of the swing motor, and the front end of the motor shield is sealed and rotatably connected to the outer wall of the sleeve of the output disk to prevent dust from entering the interior of the swing motor.

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