Multi-degree-of-freedom mechanical arm for intelligent industrial robot

Abstract

The invention discloses a multi-degree-of-freedom mechanical arm for an intelligent industrial robot, and belongs to the technical field of multi-degree-of-freedom mechanical arms. The multi-degree-of-freedom mechanical arm comprises a base, a first shaft body is fixedly connected to the upper surface of the base, a second shaft body is rotatably connected to the upper end of the first shaft body, and an adding assembly is arranged between the first shaft body and the second shaft body; the adding assembly comprises an annular box fixedly connected with the side, close to the second shaft body, of the outer circle face of the first shaft body. By arranging the adding assembly, when the second shaft body drives the push block to rotate clockwise, a lubricating agent is pumped into the annular box, and when the annular box rotates anticlockwise, the lubricating agent in the annular box is squeezed, and the lubricating agent is squeezed into the position, located between the first shaft body and the second shaft body, in the first shaft body for lubricating operation; the mechanical arm can automatically lubricate all the shafts during working, lubricating agents do not need to be manually added among all the shafts of the mechanical arm, and the working efficiency of lubricating the mechanical arm is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of multi-degree-of-freedom robotic arms, and more specifically, to a multi-degree-of-freedom robotic arm for intelligent industrial robots. Background Art

[0002] Industrial robots are multi-joint manipulators or multi-degree-of-freedom machine devices widely used in the industrial field. They have a certain degree of automation and can rely on their own power sources and control capabilities to achieve various industrial processing and manufacturing functions. A multi-degree-of-freedom robotic arm refers to a robotic arm with multiple degrees of freedom, which can perform complex movements and operations in three-dimensional space. A multi-degree-of-freedom robotic arm usually includes multiple joints and axes, and each joint can move independently to achieve various actions and postures. The number of degrees of freedom of a multi-degree-of-freedom robotic arm is usually four, six, or more. The degree of freedom refers to the number of joints that a robot can move independently. The higher the degree of freedom, the greater the flexibility and operating range of the robot. Common multi-degree-of-freedom robotic arms include four-degree-of-freedom, six-degree-of-freedom, and seven-degree-of-freedom robotic arms. The six-degree-of-freedom robotic arm is the most common type, with three rotational axes and three translational axes, and can perform operations at any position and posture in three-dimensional space.

[0003] Most of the existing multi-degree-of-freedom robotic arms are six-degree-of-freedom robotic arms. Through the setting of three rotational axes and three translational axes, the robotic arm can reach any point in space and perform positioning in any posture, thus achieving highly flexible operations. However, after the robotic arm works for a long time, the flexibility of rotation between each axis will decrease, resulting in a decrease in the flexibility and accuracy of the entire robotic arm. Therefore, it is necessary to regularly lubricate and maintain between each axis of the robotic arm to ensure the flexibility and accuracy of the entire robotic arm. However, the common lubrication methods for between each axis of the robotic arm mainly involve manually adding lubricant between each axis of the robotic arm to ensure the lubrication degree between each axis of the robotic arm, which requires a lot of time for workers and reduces the working efficiency of lubricating the robotic arm. Summary of the Invention

[0004] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a multi-degree-of-freedom robotic arm for intelligent industrial robots.

[0005] To solve the above problems, the present invention adopts the following technical solutions.

[0006] A multi-degree-of-freedom robotic arm for intelligent industrial robots includes a base. A first shaft body is fixedly connected to the upper surface of the base. A second shaft body is rotatably connected to the upper end of the first shaft body. An adding component is arranged between the first shaft body and the second shaft body. The adding component includes an annular box fixedly connected to a side of the outer cylindrical surface of the first shaft body close to the second shaft body. A rotating baffle is hermetically and rotatably connected to the upper side inside the annular box;

[0007] On one side of the outer cylindrical surface of the second shaft body close to the annular box, a fixing ring is fixedly connected, and several uniformly distributed first connecting blocks are fixedly connected between the fixing ring and the rotating baffle. On one side of the inner wall of the annular box, an adding port is provided, and the adding port extends into the first shaft body. On one side of the annular box close to the adding port, a right baffle is provided. On one side of the lower surface of the rotating baffle, a pushing block is fixedly connected, and the pushing block is hermetically slidably connected to the inside of the annular box.

[0008] Furthermore, a liquid storage tank is fixedly connected to the outer cylindrical surface of the first shaft body at a position below the adding port. At the lower end of the inner wall of the annular box, a first adding pipe is fixedly connected. The first adding pipe is located on the side of the adding port away from the right baffle, and the lower end of the first adding pipe penetrates into the liquid storage tank. On the outer cylindrical surface of the first shaft body close to the lower side of the annular box and away from the adding port, a discharge pipe is fixedly connected, and the lower end of the discharge pipe penetrates into the liquid storage tank. Inside the liquid storage tank, a partition is fixedly connected between the discharge pipe and the first adding pipe. One-way valves are provided at positions close to the annular box inside the first adding pipe and the discharge pipe.

[0009] Furthermore, one end of the second shaft body is rotatably connected to a third shaft body, one end of the third shaft body is rotatably connected to a fourth shaft body, one end of the fourth shaft body is rotatably connected to a fifth shaft body, one end of the fifth shaft body is rotatably connected to a sixth shaft body, one end of the sixth shaft body is rotatably connected to a seventh shaft body, and adding components are provided between the second shaft body and the third shaft body, between the third shaft body and the fourth shaft body, between the fourth shaft body and the fifth shaft body, between the fifth shaft body and the sixth shaft body, and between the sixth shaft body and the seventh shaft body.

[0010] Furthermore, a switching component is provided on the lower surface of the annular box. The switching component includes a first fixing block fixedly connected to the lower surface of the annular box at a position below the adding port. Two first sliding grooves are provided on the upper surface of the first fixing block. Inside both of the first sliding grooves, a first sliding rod is slidably connected. On the upper surface of one of the first sliding rods, a left baffle is fixedly connected, and the left baffle penetrates and extends into the annular box. The lower end of the right baffle penetrates and extends into the first sliding groove and is fixedly connected to the upper surface of the first sliding rod. On one side of the inner walls of both of the first sliding grooves, a first through groove is provided. On one side of the outer surfaces of both of the first sliding rods, a first straight rod is provided, and the two first straight rods respectively pass through the two first through grooves and are slidably connected in the two first through grooves. On one side of the outer surface of the first fixing block between the two first through grooves, a first fixing shaft is fixedly connected. A rotating rod is rotatably connected to the outer cylindrical surface of the first fixing shaft, and both of the first straight rods penetrate the first straight rod and are slidably connected to the first straight rod.

[0011] Further, a second fixing block is fixedly connected to the upper side of the outer surface of the rotating rod. A second sliding groove is formed in the upper surface of the second fixing block. A sliding connection seat is slidably connected inside the second sliding groove. A first spring is arranged on one side of the outer surface of the sliding connection seat. A second fixing shaft is fixedly connected to the outer circular surface of the annular box directly above the rotating rod. A rotating plate is rotatably connected to the outer circular surface of the second fixing shaft. A connecting rod is fixedly connected to the lower side of the outer circular surface of the rotating plate, and the connecting rod is rotatably connected to the inside of the sliding connection seat. A first bevel gear is arranged on one side of the outer circular surface of the rotating plate close to the annular box. A second bevel gear is rotatably connected to the outer circular surface of the annular box close to the first bevel gear, and the first bevel gear is meshed with the second bevel gear. Second connecting blocks are fixedly connected between the inner circular surface of the second bevel gear and the first connecting block. A second adding pipe is fixedly connected to one side of the lower end of the inner wall of the annular box, and the second adding pipe is located on the side of the right baffle away from the adding port. The lower end of the second adding pipe penetrates into the liquid storage tank. A second one-way valve is arranged at a position close to the annular box inside the second adding pipe.

[0012] Further, a limiting component is arranged between the first bevel gear and the rotating plate. The limiting component includes two ratchets fixedly connected to the inner circular surface of the first bevel gear, and the directions of the two ratchets are opposite. A first rotating groove is formed in one side of the outer circular surface of the rotating plate. A second rotating groove is formed in one side of the outer circular surface of the rotating plate close to the first rotating groove, and the two ratchets are respectively rotatably connected to the inside of the first rotating groove and the second rotating groove. A third sliding groove is formed in the lower side of the inner circular surface of the first rotating groove close to the connecting rod. A first pawl is slidably connected inside the third sliding groove, and the first pawl is meshed with one of the ratchets. Two second springs are arranged on one side of the outer surface of the first pawl. A fourth sliding groove is formed in the lower side of the inner circular surface of the second rotating groove away from the connecting rod. A second pawl is slidably connected inside the fourth sliding groove, and the second pawl is meshed with the other ratchet. Two third springs are arranged on one side of the outer surface of the second pawl.

[0013] Further, a first L-shaped sliding groove is formed in one side of the inner wall of the third sliding groove. A first L-shaped sliding block is slidably connected inside the first L-shaped sliding groove, and the first L-shaped sliding block is fixedly connected to the first pawl. A second L-shaped sliding groove is formed in one side of the inner wall of the fourth sliding groove. A second L-shaped sliding block is slidably connected inside the second L-shaped sliding groove, and the second L-shaped sliding block is fixedly connected to the second pawl. An arc-shaped sliding groove is formed in one side of the outer surface of the rotating plate, and one ends of the first L-shaped sliding block and the second L-shaped sliding block both penetrate into the arc-shaped sliding groove. Arc-shaped sliding blocks are slidably connected inside the arc-shaped sliding groove, and the arc-shaped sliding blocks are fixedly connected to the second fixing shaft.

[0014] Further, moving components are arranged on both sides of the outer surface of the first fixing block. The moving components include sliding boxes fixedly connected to both sides of the outer surface of the first fixing block. A first slider is slidably connected to the inside of each of the two sliding boxes, and both of the first sliders penetrate through the first fixing block and are respectively fixedly connected to two first sliding rods. Second through grooves are formed on the outer surfaces of both of the first sliding rods. A second sliding rod is slidably connected to the inside of each of the two second through grooves, and the two second sliding rods are respectively fixedly connected to two first straight rods. One end of each of the two first sliders penetrates through the sliding box. Second straight rods are fixedly connected to the positions of the upper surfaces of both of the first sliders outside the sliding box. Limiting rings are fixedly connected to the positions of the outer circular surface of the annular box corresponding to the two second straight rods, and the two second straight rods are respectively slidably connected to the inside of the two limiting rings. A conical block is fixedly connected to the position of the outer circular surface of the second bevel gear close to the push block. Four springs are arranged on the lower surfaces of both of the first sliders and the first sliding rods.

[0015] Further, fixing components are arranged between the second sliding rods and the second through grooves. The fixing components include grooves formed on the outer surfaces of the two second sliding rods close to one side of the first slider. Fifth sliding grooves are formed on one side of the inner walls of the two second through grooves close to the grooves, and both of the fifth sliding grooves extend into the first slider. A sliding clamping block is slidably connected to the inside of each of the two fifth sliding grooves. A trapezoidal groove is formed on one side of the outer surface of each of the two sliding clamping blocks. Sixth sliding grooves are formed on one side of the inner walls of the two fifth sliding grooves corresponding to the trapezoidal groove. A first trapezoidal slider is slidably connected to the inside of each of the two sixth sliding grooves. Five springs are arranged on the sides of the outer surfaces of both of the sliding clamping blocks away from the grooves. A second trapezoidal slider is fixedly connected to one end of each of the two first trapezoidal sliders away from the sliding clamping block. Seventh sliding grooves are formed on one side of the inner walls of the two sixth sliding grooves away from the fifth sliding grooves. A third trapezoidal slider is slidably connected to the inside of each of the two seventh sliding grooves. Third straight rods are fixedly connected to the upper surfaces of both of the third trapezoidal sliders, and the upper ends of both of the third straight rods penetrate through the second straight rod. A conical plate is fixedly connected to the upper surface of the conical block.

[0016] Further, eighth sliding grooves are formed on the upper surfaces of both of the second straight rods. A fourth straight rod is slidably connected to the inside of each of the two eighth sliding grooves, and the two third straight rods are respectively fixedly connected to the two fourth straight rods. Seven springs are arranged on the lower surfaces of both of the fourth straight rods. Six springs are arranged on the sides of the outer surfaces of the second trapezoidal sliders close to the first trapezoidal sliders.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] (1) In this solution, by setting up an adding component, when the second shaft drives the push block to rotate clockwise, the lubricant in the liquid storage tank is pumped into the inner part of the annular box through the first adding pipe. When the annular box rotates counterclockwise, the lubricant inside the annular box is squeezed, and thus the lubricant is squeezed into the position between the first shaft and the second shaft within the first shaft through the adding port, thereby lubricating the position between the first shaft and the second shaft. This enables the robotic arm to lubricate between each shaft by itself during operation, eliminating the need for manual addition of lubricant between each shaft of the robotic arm and improving the working efficiency of lubricating the robotic arm.

[0019] (2) In this solution, by setting up a switching component, when the push block rotates counterclockwise, it drives the left baffle to move downward and the right baffle to move upward, thereby squeezing the lubricant on one side of the push block into the position between the first shaft and the second shaft, while pumping new lubricant into the other side of the push block. When the push block rotates clockwise, it drives the left baffle to move upward and the right baffle to move downward, thereby squeezing the lubricant on the other side of the push block into the position between the first shaft and the second shaft, while pumping new lubricant into one side of the push block. This ensures that when the push block rotates counterclockwise or clockwise, lubricant is squeezed into the position between the first shaft and the second shaft, improving the usage effect of the adding component.

[0020] (3) In this solution, by setting up a limiting component, when the second bevel gear rotates counterclockwise, the arc-shaped slider drives the second pawl to separate from one side ratchet, and then through the meshing connection of the first pawl and the other side ratchet, after the rotating plate stops rotating, the first bevel gear can continue to rotate clockwise. When the second bevel gear rotates clockwise, the arc-shaped slider drives the first pawl to separate from the other side ratchet, and then through the meshing connection of the second pawl and one side ratchet, after the rotating plate stops rotating, the first bevel gear can continue to rotate counterclockwise. After the switching component drives the left baffle and the right baffle to switch with each other, the second bevel gear can continue to rotate, thereby driving the push block to rotate within the annular box, ensuring the normal use of the adding component. Description of the Drawings

[0021] Figure 1 is the overall structural schematic diagram of the present invention;

[0022] Figure 2 is the partial structural schematic diagram of the present invention;

[0023] Figure 3 is the sectional structural schematic diagram of the adding component of the present invention;

[0024] Figure 4 is of the present invention Figure 3 magnified structural schematic diagram of A in;

[0025] Figure 5 is the sectional structural schematic diagram of the switching component of the present invention;

[0026] Figure 6 For the present invention Figure 5 Schematic enlarged structure diagram of B in

[0027] Figure 7 Schematic partial sectional structure diagram of the switching component of the present invention;

[0028] Figure 8 For the present invention Figure 7 Schematic enlarged structure diagram of C in

[0029] Figure 9 Schematic sectional structure diagram of the limit component of the present invention;

[0030] Figure 10 Schematic partial sectional structure diagram of the limit component of the present invention;

[0031] Figure 11 Schematic sectional structure diagram of the moving component of the present invention;

[0032] Figure 12 For the present invention Figure 11 Schematic enlarged structure diagram of D in

[0033] Figure 13 Schematic partial sectional structure diagram of the fixed component of the present invention;

[0034] Figure 14 Schematic sectional structure diagram of the fixed component of the present invention;

[0035] Figure 15 For the present invention Figure 14 Schematic enlarged structure diagram of E in

[0036] Explanation of the reference numerals in the figure:

[0037] 1. Base; 2. First shaft body; 3. Second shaft body; 4. Third shaft body;

[0038] 5. Adding component; 51. Ring-shaped box; 52. Rotating baffle; 53. Fixed ring; 54. First connecting block; 55. Pushing block; 56. Adding port; 57. Right baffle; 58. First adding pipe; 59. Discharge pipe; 510. Liquid storage tank; 511. First one-way valve; 512. Partition board;

[0039] 6. Switching component; 61. First fixing block; 62. First sliding groove; 63. First sliding rod; 64. Left baffle; 65. First through groove; 66. First fixing shaft; 67. Rotating rod; 68. First straight rod; 69. Second fixing block; 610. Second sliding groove; 611. Sliding connection seat; 612. First spring; 613. Second fixing shaft; 614. Rotating plate; 615. Connecting rod; 616. First bevel gear; 617. Second connecting block; 618. Second bevel gear; 619. Second adding pipe; 620. Second one-way valve;

[0040] 7. Limiting component; 71. First rotating groove; 72. Second rotating groove; 73. Ratchet; 74. Third sliding groove; 75. First ratchet pawl; 76. Second spring; 77. Arc-shaped sliding groove; 78. First L-shaped sliding groove; 79. First L-shaped sliding block; 710. Fourth sliding groove; 711. Second ratchet pawl; 712. Third spring; 713. Second L-shaped sliding groove; 714. Second L-shaped sliding block; 715. Arc-shaped sliding block;

[0041] 8. Moving component; 81. Sliding box; 82. First sliding block; 83. Second straight rod; 84. Limiting ring; 85. Fourth spring; 86. Second through groove; 87. Second sliding rod; 88. Conical block;

[0042] 9. Fixing component; 91. Groove; 92. Fifth sliding groove; 93. Sliding clamping block; 94. Trapezoidal groove; 95. Fifth spring; 96. Sixth sliding groove; 97. First trapezoidal sliding block; 98. Second trapezoidal sliding block; 99. Sixth spring; 910. Seventh sliding groove; 911. Third trapezoidal sliding block; 912. Third straight rod; 913. Conical plate; 914. Eighth sliding groove; 915. Fourth straight rod; 916. Seventh spring;

[0043] 10. Fourth shaft body; 11. Fifth shaft body; 12. Sixth shaft body; 13. Seventh shaft body. Detailed implementation mode

[0044] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0045] Please refer to Figures 1 to 15, a multi-degree-of-freedom robotic arm for intelligent industrial robots, including a base 1. A first shaft body 2 is fixedly connected to the upper surface of the base 1. The upper end of the first shaft body 2 is rotatably connected to a second shaft body 3. An adding component 5 is arranged between the first shaft body 2 and the second shaft body 3. The adding component 5 includes an annular box 51 fixedly connected to the side of the outer cylindrical surface of the first shaft body 2 close to the second shaft body 3. A rotating baffle 52 is hermetically rotatably connected to the upper side inside the annular box 51;

[0046] A fixing ring 53 is fixedly connected to the side of the outer cylindrical surface of the second shaft body 3 close to the annular box 51. A plurality of uniformly distributed first connecting blocks 54 are fixedly connected between the fixing ring 53 and the rotating baffle 52. An adding port 56 is opened on one side of the inner wall of the annular box 51, and the adding port 56 extends into the first shaft body 2. A right baffle 57 is arranged on the side of the inner part of the annular box 51 close to the adding port 56. A pushing block 55 is fixedly connected to one side of the lower surface of the rotating baffle 52, and the pushing block 55 is hermetically slidably connected to the inner part of the annular box 51.

[0047] As Figure 3 , Figure 4 As shown, a liquid storage tank 510 is fixedly connected to the position of the outer cylindrical surface of the first shaft body 2 below the adding port 56. A first adding pipe 58 is fixedly connected to the lower end of the inner wall of the annular box 51, and the first adding pipe 58 is located on the side of the adding port 56 away from the right baffle 57. The lower end of the first adding pipe 58 penetrates into the liquid storage tank 510. A discharge pipe 59 is fixedly connected to the position of the outer cylindrical surface of the first shaft body 2 close to the lower side of the annular box 51 away from the adding port 56, and the lower end of the discharge pipe 59 penetrates into the liquid storage tank 510. A partition 512 is fixedly connected between the discharge pipe 59 and the first adding pipe 58 inside the liquid storage tank 510. First one-way valves 511 are arranged at the positions close to the annular box 51 inside the first adding pipe 58 and the discharge pipe 59.

[0048] As Figure 1 As shown, one end of the second shaft body 3 is rotatably connected to a third shaft body 4. One end of the third shaft body 4 is rotatably connected to a fourth shaft body 10. One end of the fourth shaft body 10 is rotatably connected to a fifth shaft body 11. One end of the fifth shaft body 11 is rotatably connected to a sixth shaft body 12. One end of the sixth shaft body 12 is rotatably connected to a seventh shaft body 13. Adding components 5 are arranged between the second shaft body 3 and the third shaft body 4, between the third shaft body 4 and the fourth shaft body 10, between the fourth shaft body 10 and the fifth shaft body 11, between the fifth shaft body 11 and the sixth shaft body 12, and between the sixth shaft body 12 and the seventh shaft body 13.

[0049] The robotic arm is provided with a first shaft body 2, a second shaft body 3, a third shaft body 4, a fourth shaft body 10, a fifth shaft body 11, a sixth shaft body 12, and a seventh shaft body 13, enabling the robotic arm to perform operations at any position and posture in three-dimensional space, thus achieving highly flexible operations. Moreover, various different fixtures are externally connected to the seventh shaft body 13 to achieve the clamping work of different items.

[0050] However, when lubricating between the various shafts of the robotic arm, manually adding lubricant between the various shafts of the robotic arm takes a lot of time for workers and reduces the working efficiency of lubricating the robotic arm. Therefore, an adding component 5 is provided. When the second shaft body 3 rotates, it drives the fixed ring 53 to rotate, and then drives the rotating baffle 52 to rotate in the annular box 51 through the first connecting block 54, thereby driving the push block 55 to rotate in the annular box 51. When the push block 55 rotates clockwise, a negative pressure is formed at the position including the adding port 56 between the push block 55 and the right baffle 57 inside the annular box 51, so that the lubricant in the liquid storage tank 510 is pumped into the annular box 51 through the first adding pipe 58. When the annular box 51 rotates counterclockwise, the lubricant inside the annular box 51 is squeezed, and the lubricant is squeezed into the position between the first shaft body 2 and the second shaft body 3 inside the first shaft body 2 through the adding port 56, thereby lubricating between the first shaft body 2 and the second shaft body 3. When the robotic arm is working, the lubricant is automatically added between the first shaft body 2 and the second shaft body 3 by the rotation of the second shaft body 3, thus lubricating between the first shaft body 2 and the second shaft body 3, enabling the robotic arm to lubricate between the various shafts by itself during work without manually adding lubricant between the various shafts of the robotic arm, and improving the working efficiency of lubricating the robotic arm. At the same time, the old lubricant between the first shaft body 2 and the second shaft body 3 is squeezed out into the liquid storage tank 510 through the discharge pipe 59, and then the old lubricant and the new lubricant inside the liquid storage tank 510 are separated by the partition plate 512. At the same time, the first one-way valve 511 can prevent the lubricant in the first adding pipe 58 and the discharge pipe 59 from flowing back. Moreover, the material of the liquid storage tank 510 is a transparent material, which can facilitate the staff to observe the state of the old lubricant inside the liquid storage tank 510, thereby judging whether the old lubricant can be used again. When the old lubricant can be used again, the old lubricant overflows the partition plate 512 and continues to be used. When the old lubricant cannot be used again, the old lubricant is discharged through the discharge port on the lower surface of the liquid storage tank 510, and then the new lubricant is added into the liquid storage tank 510 through the adding port on one side of the liquid storage tank 510, thus facilitating the normal use of the adding component 5.

[0051] Such as Figure 4 、 Figure 5 、 Figure 6As shown, a switching component 6 is provided on the lower surface of the annular box 51. The switching component 6 includes a first fixed block 61 fixedly connected to the lower surface of the annular box 51 below the adding port 56. Two first sliding grooves 62 are formed on the upper surface of the first fixed block 61. Two first sliding rods 63 are slidably connected inside the two first sliding grooves 62. A left baffle 64 is fixedly connected to the upper surface of one of the first sliding rods 63, and the left baffle 64 extends through and into the annular box 51. The lower end of the right baffle 57 extends through and into the first sliding groove 62 and is fixedly connected to the upper surface of the first sliding rod 63. One first through groove 65 is formed on one side of the inner wall of each of the two first sliding grooves 62. One first straight rod 68 is provided on one side of the outer surface of each of the two first sliding rods 63, and the two first straight rods 68 respectively pass through the two first through grooves 65 and are slidably connected in the two first through grooves 65. A first fixed shaft 66 is fixedly connected to the outer surface of the first fixed block 61 between the two first through grooves 65. A rotating rod 67 is rotatably connected to the outer circular surface of the first fixed shaft 66, and the two first straight rods 68 both pass through and are slidably connected to the first straight rod 68.

[0052] As Figure 6 , Figure 7 , Figure 8 shown, a second fixed block 69 is fixedly connected to the upper side of the outer surface of the rotating rod 67. A second sliding groove 610 is formed on the upper surface of the second fixed block 69. A sliding connection seat 611 is slidably connected inside the second sliding groove 610. A first spring 612 is provided on one side of the outer surface of the sliding connection seat 611. A second fixed shaft 613 is fixedly connected to the outer circular surface of the annular box 51 directly above the rotating rod 67. A rotating plate 614 is rotatably connected to the outer circular surface of the second fixed shaft 613. A connecting rod 615 is fixedly connected to the lower side of the outer circular surface of the rotating plate 614, and the connecting rod 615 is rotatably connected to the inside of the sliding connection seat 611. A first bevel gear 616 is provided on one side of the outer circular surface of the rotating plate 614 close to the annular box 51. A second bevel gear 618 is rotatably connected to the outer circular surface of the annular box 51 close to the first bevel gear 616, and the first bevel gear 616 is meshed with the second bevel gear 618. A second connecting block 617 is fixedly connected between the inner circular surface of the second bevel gear 618 and the first connecting block 54. A second adding pipe 619 is fixedly connected to one side of the lower end of the inner wall of the annular box 51, and the second adding pipe 619 is located on the side of the right baffle 57 away from the adding port 56. The lower end of the second adding pipe 619 extends into the liquid storage tank 510. A second one-way valve 620 is provided inside the second adding pipe 619 close to the annular box 51.

[0053] In the above embodiments, the rotation of the second shaft body 3 drives the pushing block 55 to rotate within the annular box 51. When the pushing block 55 rotates clockwise, lubricant is drawn into the annular box 51. When the pushing block 55 rotates counterclockwise, the lubricant within the annular box 51 is squeezed into the space between the first shaft body 2 and the second shaft body 3, thereby lubricating the first shaft body 2 and the second shaft body 3. This enables the robotic arm to lubricate between each shaft by itself during operation, improving the working efficiency of lubricating the robotic arm. However, when the pushing block 55 rotates clockwise to draw lubricant into the annular box 51, at the same time, the lubricant between the first shaft body 2 and the second shaft body 3 is drawn out through the filling port 56, making it impossible to add new lubricant between the first shaft body 2 and the second shaft body 3. As a result, the lubrication effect between the first shaft body 2 and the second shaft body 3 deteriorates, reducing the usage effect of the adding component 5.

[0054] Therefore, a switching component 6 is provided. When the rotating baffle 52 drives the push block 55 to rotate counterclockwise, the first connecting block 54 and the second connecting block 617 drive the second bevel gear 618 to rotate counterclockwise, thereby driving the first bevel gear 616 to rotate clockwise with the second fixed shaft 613 as the axis, and at the same time driving the rotating plate 614 to rotate clockwise. Then, it is rotationally connected to the sliding connection seat 611 through the connecting rod 615, driving the second fixed block 69 to move leftward, thereby driving the rotating rod 67 to rotate counterclockwise with the first fixed shaft 66 as the axis. And through the sliding connection between the sliding connection seat 611 and the second sliding groove 610 and the cooperation of the first spring 612, it is convenient for the connecting rod 615 to drive the rotating rod 67 to rotate. Then, it drives the first straight rod 68 on one side to move downward in the first through groove 65, and at the same time drives the first sliding rod 63 on one side to move downward in the first sliding groove 62, thereby driving the left baffle 64 to move downward, and at the same time driving the first straight rod 68 on the other side to move upward in the first through groove 65. Then, through the first sliding rod 63 on the other side, it drives the right baffle 57 to move upward. Then, through the counterclockwise rotation of the push block 55, the lubricant on one side of the push block 55 is squeezed, and the lubricant is squeezed into the position between the first shaft body 2 and the second shaft body 3. At the same time, the lubricant is sucked from the liquid storage tank 510 into the other side of the push block 55 in the annular box 51 through the second adding pipe 619, and the second one-way valve 620 prevents the lubricant in the second adding pipe 619 from flowing backward. Then, when the rotating baffle 52 drives the push block 55 to rotate clockwise, it drives the second bevel gear 618 to rotate clockwise, thereby driving the first bevel gear 616 and the rotating plate 614 to rotate counterclockwise, and then driving the rotating rod 67 to rotate clockwise. Then, through the first straight rod 68 and the first sliding rod 63 on one side, it drives the left baffle 64 to move upward, and at the same time drives the right baffle 57 to move downward through the first straight rod 68 and the first sliding rod 63 on the other side, causing the push block 55 to rotate clockwise, squeezing the lubricant on the other side of the push block 55, and squeezing the lubricant into the position between the first shaft body 2 and the second shaft body 3. At the same time, the lubricant is sucked from the liquid storage tank 510 into the other side of the push block 55 in the annular box 51 through the first adding pipe 58. When the push block 55 rotates counterclockwise, it drives the left baffle 64 to move downward and the right baffle 57 to move upward, thereby squeezing the lubricant on one side of the push block 55 into the position between the first shaft body 2 and the second shaft body 3, and at the same time sucking new lubricant into the other side of the push block 55. When the push block 55 rotates clockwise, it drives the left baffle 64 to move upward and the right baffle 57 to move downward, thereby squeezing the lubricant on the other side of the push block 55 into the position between the first shaft body 2 and the second shaft body 3, and at the same time sucking new lubricant into one side of the push block 55. When the push block 55 rotates counterclockwise or clockwise, it will squeeze the lubricant into the position between the first shaft body 2 and the second shaft body 3, and will not draw out the lubricant between the first shaft body 2 and the second shaft body 3, improving the use effect of the adding component 5.

[0055] Such as Figure 8 , Figure 9 ,Figure 10 As shown, a limiting component 7 is provided between the first bevel gear 616 and the rotating plate 614. The limiting component 7 includes two ratchets 73 fixedly connected to the inner circular surface of the first bevel gear 616, and the directions of the two ratchets 73 are opposite. One first rotating groove 71 is formed on one side of the outer circular surface of the rotating plate 614. One second rotating groove 72 is formed on the outer circular surface of the rotating plate 614 near the first rotating groove 71. The two ratchets 73 are respectively rotatably connected to the interiors of the first rotating groove 71 and the second rotating groove 72. A third sliding groove 74 is formed on the lower side of the inner circular surface of the first rotating groove 71 near the connecting rod 615. A first pawl 75 is slidably connected to the interior of the third sliding groove 74, and the first pawl 75 is meshed with one of the ratchets 73. Two second springs 76 are arranged on one side of the outer surface of the first pawl 75. A fourth sliding groove 710 is formed on the lower side of the inner circular surface of the second rotating groove 72 on the side far from the connecting rod 615. A second pawl 711 is slidably connected to the interior of the fourth sliding groove 710, and the second pawl 711 is meshed with the other ratchet 73. Two third springs 712 are arranged on one side of the outer surface of the second pawl 711.

[0056] As Figure 9 , Figure 10 As shown, one first L-shaped sliding groove 78 is formed on one side of the inner wall of the third sliding groove 74. A first L-shaped slider 79 is slidably connected to the interior of the first L-shaped sliding groove 78, and the first L-shaped slider 79 is fixedly connected to the first pawl 75. One second L-shaped sliding groove 713 is formed on one side of the inner wall of the fourth sliding groove 710. A second L-shaped slider 714 is slidably connected to the interior of the second L-shaped sliding groove 713, and the second L-shaped slider 714 is fixedly connected to the second pawl 711. One arc-shaped sliding groove 77 is formed on one side of the outer surface of the rotating plate 614. One ends of the first L-shaped slider 79 and the second L-shaped slider 714 both penetrate into the interior of the arc-shaped sliding groove 77. Arc-shaped sliders 715 are slidably connected to the interior of the arc-shaped sliding groove 77, and the arc-shaped sliders 715 are fixedly connected to the second fixed shaft 613.

[0057] In the above-mentioned embodiment, the second bevel gear 618 is driven to rotate by the push block 55, so as to drive the first bevel gear 616 and the rotating plate 614 to rotate. Then, the rotating rod 67 is driven to rotate by the connecting rod 615 and the sliding connection seat 611, so as to drive the up-and-down movement of the left baffle 64 and the right baffle 57. Furthermore, when the push block 55 rotates counterclockwise or clockwise, lubricant will be squeezed into the position between the first shaft body 2 and the second shaft body 3. However, through the rotational connection of the connecting rod 615 and the sliding connection seat 611, the rotation range of the rotating plate 614 is limited, so that the rotating plate 614 can only rotate within a certain arc range, resulting in that the first bevel gear 616 can only rotate within a certain arc range, further restricting the rotation range of the second bevel gear 618, causing the push block 55 to only rotate within a certain range, and making the adding component 5 unable to be used normally.

[0058] Therefore, a limit component 7 is provided. When the second bevel gear 618 rotates counterclockwise, driving the first bevel gear 616 and the rotating plate 614 to rotate clockwise, the arc-shaped slider 715 is simultaneously driven to rotate counterclockwise within the arc-shaped chute 77. When the rotating plate 614 reaches the limit of clockwise rotation, the left baffle 64 moves downward to the bottom end of the inner wall of the annular box 51, and the right baffle 57 moves upward to the lower surface of the rotating baffle 52. At the same time, the arc-shaped slider 715 moves to one end inside the arc-shaped chute 77, thereby pushing the second L-shaped slider 714 to move away from the arc-shaped chute 77 within the second L-shaped chute 713. At the same time, the second pawl 711 is driven to move away from the one-side ratchet 73 within the fourth chute 710, causing the second pawl 711 to separate from the one-side ratchet 73. Then, the first pawl 75 is driven to engage with the other-side ratchet 73 through the second spring 76. After the rotating plate 614 stops rotating, the first bevel gear 616 can continue to rotate clockwise, and the second bevel gear 618 can continue to rotate counterclockwise, so that the push block 55 can continue to rotate counterclockwise within the annular box 51. Then, when the second bevel gear 618 rotates clockwise, driving the first bevel gear 616 and the rotating plate 614 to rotate counterclockwise, the arc-shaped slider 715 is simultaneously driven to rotate clockwise within the arc-shaped chute 77. When the rotating plate 614 reaches the limit of counterclockwise rotation, the left baffle 64 moves upward to the lower surface of the rotating baffle 52, and the right baffle 57 moves downward to the bottom end of the inner wall of the annular box 51. At the same time, the arc-shaped slider 715 moves to the other end inside the arc-shaped chute 77, thereby pushing the first L-shaped slider 79 to move away from the arc-shaped chute 77 within the first L-shaped chute 78. At the same time, the first pawl 75 is driven to move away from the other-side ratchet 73 within the third chute 74, causing the first pawl 75 to separate from the other-side ratchet 73. Then, the second pawl 711 is driven to engage with the one-side ratchet 73 through the third spring 712. After the rotating plate 614 stops rotating, the first bevel gear 616 can continue to rotate counterclockwise, and the second bevel gear 618 can continue to rotate clockwise, so that the push block 55 can continue to rotate clockwise within the annular box 51. Thus, after starting the switching component 6 by rotating the second bevel gear 618, driving the left baffle 64 and the right baffle 57 to switch with each other, the second bevel gear 618 can continue to rotate through the limit component 7, thereby driving the push block 55 to rotate within the annular box 51, ensuring the normal use of the adding component 5.

[0059] Such as Figure 11 , Figure 12As shown, moving components 8 are provided on both sides of the outer surface of the first fixed block 61. The moving components 8 include sliding boxes 81 fixedly connected to both sides of the outer surface of the first fixed block 61. Inside both of the sliding boxes 81, first sliders 82 are slidably connected. And both of the first sliders 82 penetrate through the first fixed block 61 and are respectively fixedly connected to two first sliding rods 63. Second through grooves 86 are formed on the outer surfaces of both of the first sliding rods 63. Inside both of the second through grooves 86, second sliding rods 87 are slidably connected. And the two second sliding rods 87 are respectively fixedly connected to two first straight rods 68. One end of each of the two first sliders 82 penetrates through the sliding box 81. On the upper surfaces of both of the first sliders 82 at positions outside the sliding box 81, second straight rods 83 are fixedly connected. At positions corresponding to the two second straight rods 83 on the outer circular surface of the annular box 51, limit rings 84 are fixedly connected. And the two second straight rods 83 are respectively slidably connected inside the two limit rings 84. At a position on the outer circular surface of the second bevel gear 618 close to the push block 55, a tapered block 88 is fixedly connected. On the lower surfaces of both of the first sliders 82 and the first sliding rods 63, fourth springs 85 are provided.

[0060] As Figure 12 , Figure 13 , Figure 14 As shown, fixing components 9 are provided between the second sliding rods 87 and the second through grooves 86. The fixing components 9 include grooves 91 formed on the outer surfaces of the two second sliding rods 87 at positions close to one side of the first sliders 82. On one side of the inner walls of both of the second through grooves 86 close to the grooves 91, fifth sliding grooves 92 are formed. And both of the fifth sliding grooves 92 extend into the first sliders 82. Inside both of the fifth sliding grooves 92, sliding blocks 93 are slidably connected. On one side of the outer surfaces of both of the sliding blocks 93, trapezoidal grooves 94 are formed. On one side of the inner walls of both of the fifth sliding grooves 92 corresponding to the trapezoidal grooves 94, sixth sliding grooves 96 are formed. Inside both of the sixth sliding grooves 96, first trapezoidal sliders 97 are slidably connected. On the sides of the outer surfaces of both of the sliding blocks 93 away from the grooves 91, two fifth springs 95 are provided. One end of each of the two first trapezoidal sliders 97 away from the sliding blocks 93 is fixedly connected to a second trapezoidal slider 98. On one side of the inner walls of both of the sixth sliding grooves 96 away from the fifth sliding grooves 92, seventh sliding grooves 910 are formed. Inside both of the seventh sliding grooves 910, third trapezoidal sliders 911 are slidably connected. On the upper surfaces of both of the third trapezoidal sliders 911, third straight rods 912 are fixedly connected. And the upper ends of both of the third straight rods 912 penetrate through the second straight rods 83. On the upper surface of the tapered block 88, a tapered plate 913 is fixedly connected.

[0061] As Figure 13 , Figure 14As shown in the figure, eighth chutes 914 are provided on the upper surfaces of the two second straight rods 83. Fourth straight rods 915 are slidably connected inside the two eighth chutes 914, and the two third straight rods 912 are respectively fixedly connected to the two fourth straight rods 915. Seventh springs 916 are provided on the lower surfaces of the two fourth straight rods 915. On the outer surface of the second trapezoidal slider 98, two sixth springs 99 are provided on the side close to the first trapezoidal slider 97.

[0062] In the above embodiment, through the cooperation of the push block 55 and the left baffle 64 or the right baffle 57, when the push block 55 rotates, the lubricant inside the annular box 51 is squeezed, so as to squeeze the lubricant into the position between the first shaft body 2 and the second shaft body 3. However, when the push block 55 rotates to the position of the left baffle 64 or the right baffle 57, due to the blockage of the left baffle 64 or the right baffle 57, the push block 55 cannot completely rotate a full circle inside the annular box 51, resulting in the second shaft body 3 being unable to rotate 360 degrees, reducing the use effect of the robotic arm.

[0063] Therefore, the moving component 8 is provided. When the second shaft body 3 drives the push block 55 to rotate counterclockwise, the left baffle 64 is moved downward and the right baffle 57 is moved upward through the switching component 6. Then, the conical block 88 is driven to rotate simultaneously with the push block 55 through the second bevel gear 618. Then, when the push block 55 moves to the position of the right baffle 57, first, the conical block 88 pushes the second straight rod 83 on one side downward, and at the same time drives the first slider 82 on one side to move downward inside the sliding box 81. Then, the second sliding rod 87 slides in the second through groove 86, so that the first slider 82 on one side drives the first sliding rod 63 on one side to move downward, and further drives the right baffle 57 to move downward, enabling the push block 55 to move through the position of the right baffle 57. When the second shaft body 3 drives the push block 55 to rotate clockwise, the left baffle 64 is moved upward and the right baffle 57 is moved downward through the switching component 6. Then, when the push block 55 moves to the position of the right baffle 57, first, the conical block 88 pushes the second straight rod 83 on the other side downward, thereby driving the left baffle 64 to move downward, enabling the push block 55 to move through the position of the left baffle 64, so that the push block 55 can rotate 360 degrees inside the annular box 51, and further enabling the second shaft body 3 to rotate 360 degrees, reducing the use effect of the robotic arm. And the fourth spring 85 can drive the first slider 82 and the first sliding rod 63 to move upward, so that the left baffle 64 and the right baffle 57 can move upward more stably. Then, the up and down movement of the second straight rod 83 is limited by the limiting ring 84, thereby ensuring the stability of the up and down movement of the second straight rod 83.

[0064] In the above embodiment, when the second shaft body 3 drives the push block 55 to rotate, the conical block 88 is driven to rotate simultaneously with the push block 55. When the push block 55 moves to the position of the left baffle 64 or the right baffle 57, first, one of the two second straight rods 83 is pushed downward by the conical block 88, thereby driving the left baffle 64 or the right baffle 57 to move downward, so that the push block 55 can rotate 360 degrees inside the annular box 51, ensuring that the second shaft body 3 can rotate 360 degrees, which reduces the use effect of the robotic arm. However, when the fourth spring 85 drives the two first sliding rods 63 to move upward, thereby driving the left baffle 64 or the right baffle 57 to move upward, when the left baffle 64 or the right baffle 57 moves to the lower surface of the rotating baffle 52, it is easy to automatically move downward, so that the lubricant passes above the left baffle 64 or the right baffle 57, making the lubricant unable to be completely squeezed into the position between the first shaft body 2 and the second shaft body 3 through the filling port 56, reducing the use effect of the filling component 5.

[0065] Therefore, a fixing component 9 is provided. When the second sliding rod 87 moves to the lower end of the second through groove 86, the fifth spring 95 drives the sliding block 93 to move towards the second sliding rod 87 in the fifth sliding groove 92, so that the sliding block 93 is clamped into the groove 91, thereby fixing the second sliding rod 87 inside the second through groove 86. Then, the first straight rod 68 is used to limit the first sliding rod 63, which can prevent the left baffle 64 or the right baffle 57 from automatically moving downward, improving the stability when the left baffle 64 or the right baffle 57 moves to the lower surface of the rotating baffle 52 and enhancing the use effect of the filling component 5. Then, when the conical block 88 pushes the second straight rod 83 downward, first, the conical plate 913 pushes the fourth straight rod 915 to move downward in the eighth sliding groove 914, and then the third straight rod 912 drives the third trapezoidal slider 911 to move downward in the seventh sliding groove 910, thereby pushing the second trapezoidal slider 98 and the first trapezoidal slider 97 to move towards the trapezoidal groove 94 in the sixth sliding groove 96 at the same time, so that the first trapezoidal slider 97 is inserted into the trapezoidal groove 94, and further drives the sliding block 93 to move into the fifth sliding groove 92, so that the sliding block 93 is pulled out of the groove 91, releasing the fixation of the second sliding rod 87, enabling the second sliding rod 87 to slide in the second through groove 86. Thus, when the conical block 88 pushes the second straight rod 83 downward, it drives the left baffle 64 or the right baffle 57 to move downward, facilitating the use of the moving component 8. Then, the seventh spring 916 drives the third trapezoidal slider 911 to move upward, and at the same time, the sixth spring 99 drives the second trapezoidal slider 98 to move towards the seventh sliding groove 910, thereby driving the first trapezoidal slider 97 to be pulled out of the trapezoidal groove 94, facilitating the fifth spring 95 to drive the sliding block 93 to be inserted into the groove 91.

[0066] Usage method: When the second shaft body 3 rotates counterclockwise, the fixed ring 53 drives the push block 55 to rotate counterclockwise, and at the same time drives the second bevel gear 618 to rotate counterclockwise, thereby driving the first bevel gear 616 to rotate clockwise, and then starting the switching component 6, driving the left baffle 64 to move downward to the lower end of the inner wall of the annular box 51, and at the same time driving the right baffle 57 to move upward to the lower surface of the rotating baffle 52. Then, the limiting component 7 is started, so that the first bevel gear 616 continues to rotate clockwise, thereby squeezing the lubricant on one side of the push block 55, squeezing the lubricant into the position between the first shaft body 2 and the second shaft body 3, and at the same time sucking the lubricant into the other side of the push block 55 through the second adding pipe 619, so as to lubricate between the first shaft body 2 and the second shaft body 3. Then, when the push block 55 moves to a position close to the right baffle 57, first, the tapered plate 913 is used to push the fourth straight rod 915 downward, thereby starting the fixing component 9 to release the fixing of the second sliding rod 87. Then, the tapered block 88 is used to push the second straight rod 83 downward, thereby starting the moving component 8 to drive the right baffle 57 to move to the lower end of the inner wall of the annular box 51, so that the push block 55 and the second shaft body 3 can rotate counterclockwise by 360 degrees.

[0067] When the second shaft body 3 rotates clockwise, it drives the push block 55 and the second bevel gear 618 to rotate clockwise at the same time, while driving the first bevel gear 616 to rotate counterclockwise, and then starting the switching component 6, driving the left baffle 64 to move upward to the lower surface of the rotating baffle 52, and at the same time driving the right baffle 57 to move downward to the lower end of the inner wall of the annular box 51. Then, the limiting component 7 is started, so that the first bevel gear 616 continues to rotate counterclockwise, thereby squeezing the lubricant on the other side of the push block 55, squeezing the lubricant into the position between the first shaft body 2 and the second shaft body 3, and at the same time sucking the lubricant into one side of the push block 55 through the first adding pipe 58, so as to lubricate between the first shaft body 2 and the second shaft body 3. Then, when the push block 55 moves to a position close to the left baffle 64, first, the tapered plate 913 is used to push the fourth straight rod 915 downward, thereby starting the fixing component 9 to release the fixing of the second sliding rod 87. Then, the tapered block 88 is used to push the second straight rod 83 downward, thereby starting the moving component 8 to drive the left baffle 64 to move to the lower end of the inner wall of the annular box 51, so that the push block 55 and the second shaft body 3 can rotate clockwise by 360 degrees.

[0068] The above is only a preferred specific embodiment of the present invention; however, the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its improved concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A multi-degree-of-freedom robotic arm for intelligent industrial robots, comprising a base (1), wherein an upper surface of the base (1) is fixedly connected to a first shaft body (2), and an upper end of the first shaft body (2) is rotatably connected to a second shaft body (3), characterized in that: An adding component (5) is arranged between the first shaft body (2) and the second shaft body (3). The adding component (5) includes an annular box (51) fixedly connected to the side of the outer cylindrical surface of the first shaft body (2) close to the second shaft body (3). A rotating baffle (52) is hermetically and rotatably connected to the upper side inside the annular box (51). A fixed ring (53) is fixedly connected to the side of the outer cylindrical surface of the second shaft body (3) close to the annular box (51). A plurality of uniformly distributed first connecting blocks (54) are fixedly connected between the fixed ring (53) and the rotating baffle (52). An adding port (56) is formed on one side of the inner wall of the annular box (51), and the adding port (56) extends into the first shaft body (2). A right baffle (57) is arranged on the side of the inner part of the annular box (51) close to the adding port (56). A pushing block (55) is fixedly connected to one side of the lower surface of the rotating baffle (52), and the pushing block (55) is hermetically and slidably connected to the inner part of the annular box (51).

2. The multi-degree-of-freedom robotic arm for intelligent industrial robots according to claim 1, wherein: A liquid storage tank (510) is fixedly connected to the position of the outer cylindrical surface of the first shaft body (2) below the adding port (56). A first adding pipe (58) is fixedly connected to the lower end of the inner wall of the annular box (51), and the first adding pipe (58) is located on the side of the adding port (56) away from the right baffle (57). The lower end of the first adding pipe (58) penetrates into the liquid storage tank (510). A discharge pipe (59) is fixedly connected to the position of the outer cylindrical surface of the first shaft body (2) close to the lower side of the annular box (51) and away from the adding port (56), and the lower end of the discharge pipe (59) penetrates into the liquid storage tank (510). A partition plate (512) is fixedly connected between the discharge pipe (59) and the first adding pipe (58) inside the liquid storage tank (510). A first one-way valve (511) is arranged at the position close to the annular box (51) inside the first adding pipe (58) and the discharge pipe (59).

3. The multi-degree-of-freedom robotic arm for intelligent industrial robots according to claim 1, characterized in that: One end of the second shaft body (3) is rotatably connected to a third shaft body (4). One end of the third shaft body (4) is rotatably connected to a fourth shaft body (10). One end of the fourth shaft body (10) is rotatably connected to a fifth shaft body (11). One end of the fifth shaft body (11) is rotatably connected to a sixth shaft body (12). One end of the sixth shaft body (12) is rotatably connected to a seventh shaft body (13). Adding components (5) are arranged between the second shaft body (3) and the third shaft body (4), between the third shaft body (4) and the fourth shaft body (10), between the fourth shaft body (10) and the fifth shaft body (11), between the fifth shaft body (11) and the sixth shaft body (12), and between the sixth shaft body (12) and the seventh shaft body (13).

4. The multi-degree-of-freedom robotic arm for intelligent industrial robots according to claim 2, characterized in that: A switching component (6) is provided on the lower surface of the annular box (51). The switching component (6) includes a first fixed block (61) fixedly connected to the lower surface of the annular box (51) below the adding port (56). Two first sliding grooves (62) are formed on the upper surface of the first fixed block (61). A first sliding rod (63) is slidably connected inside each of the two first sliding grooves (62). A left baffle (64) is fixedly connected to the upper surface of one of the first sliding rods (63), and the left baffle (64) extends through and into the annular box (51). The lower end of the right baffle (57) extends through and into the first sliding groove (62) and is fixedly connected to the upper surface of the first sliding rod (63). A first through groove (65) is formed on one side of the inner wall of each of the two first sliding grooves (62). A first straight rod (68) is provided on one side of the outer surface of each of the two first sliding rods (63), and the two first straight rods (68) respectively pass through the two first through grooves (65) and are slidably connected in the two first through grooves (65). A first fixed shaft (66) is fixedly connected to the outer surface of the first fixed block (61) between the two first through grooves (65). A rotating rod (67) is rotatably connected to the outer circular surface of the first fixed shaft (66), and the two first straight rods (68) both pass through and are slidably connected to the first straight rod (68).

5. The multi-degree-of-freedom robotic arm for intelligent industrial robots according to claim 4, wherein: A second fixed block (69) is fixedly connected to the upper side of the outer surface of the rotating rod (67). A second sliding groove (610) is formed on the upper surface of the second fixed block (69). A sliding connection seat (611) is slidably connected inside the second sliding groove (610). A first spring (612) is provided on one side of the outer surface of the sliding connection seat (611). A second fixed shaft (613) is fixedly connected to the outer circular surface of the annular box (51) directly above the rotating rod (67). A rotating plate (614) is rotatably connected to the outer circular surface of the second fixed shaft (613). A connecting rod (615) is fixedly connected to the lower side of the outer circular surface of the rotating plate (614), and the connecting rod (615) is rotatably connected to the inside of the sliding connection seat (611). A first bevel gear (616) is provided on the outer circular surface of the rotating plate (614) close to the annular box (51). A second bevel gear (618) is rotatably connected to the outer circular surface of the annular box (51) close to the first bevel gear (616), and the first bevel gear (616) is meshed with the second bevel gear (618). A second connecting block (617) is fixedly connected between the inner circular surface of the second bevel gear (618) and the first connecting block (54). A second adding pipe (619) is fixedly connected to one side of the lower end of the inner wall of the annular box (51), and the second adding pipe (619) is located on the side of the right baffle (57) away from the adding port (56). The lower end of the second adding pipe (619) extends through and into the liquid storage tank (510). A second one-way valve (620) is provided inside the second adding pipe (619) close to the annular box (51).

6. The multi-degree-of-freedom robotic arm for intelligent industrial robots according to claim 5, wherein: A limiting component (7) is provided between the first bevel gear (616) and the rotating plate (614). The limiting component (7) includes two ratchets (73) fixedly connected to the inner circular surface of the first bevel gear (616), and the directions of the two ratchets (73) are opposite. A first rotating groove (71) is formed on one side of the outer circular surface of the rotating plate (614), and a second rotating groove (72) is formed on the outer circular surface of the rotating plate (614) near the first rotating groove (71). The two ratchets (73) are respectively rotatably connected to the inside of the first rotating groove (71) and the second rotating groove (72). A third sliding groove (74) is formed on the lower side of the inner circular surface of the first rotating groove (71) near the connecting rod (615). A first pawl (75) is slidably connected to the inside of the third sliding groove (74), and the first pawl (75) is meshed with one of the ratchets (73). Two second springs (76) are arranged on one side of the outer surface of the first pawl (75). A fourth sliding groove (710) is formed on the lower side of the inner circular surface of the second rotating groove (72) on the side far from the connecting rod (615). A second pawl (711) is slidably connected to the inside of the fourth sliding groove (710), and the second pawl (711) is meshed with the other ratchet (73). Two third springs (712) are arranged on one side of the outer surface of the second pawl (711).

7. The multi-degree-of-freedom robotic arm for intelligent industrial robots according to claim 6, characterized in that: A first L-shaped sliding groove (78) is formed on one side of the inner wall of the third sliding groove (74). A first L-shaped sliding block (79) is slidably connected to the inside of the first L-shaped sliding groove (78), and the first L-shaped sliding block (79) is fixedly connected to the first pawl (75). A second L-shaped sliding groove (713) is formed on one side of the inner wall of the fourth sliding groove (710). A second L-shaped sliding block (714) is slidably connected to the inside of the second L-shaped sliding groove (713), and the second L-shaped sliding block (714) is fixedly connected to the second pawl (711). An arc-shaped sliding groove (77) is formed on one side of the outer surface of the rotating plate (614), and one ends of the first L-shaped sliding block (79) and the second L-shaped sliding block (714) both penetrate into the inside of the arc-shaped sliding groove (77). An arc-shaped sliding block (715) is slidably connected to the inside of the arc-shaped sliding groove (77), and the arc-shaped sliding block (715) is fixedly connected to the second fixed shaft (613).

8. The multi-degree-of-freedom robotic arm for intelligent industrial robots according to claim 7, characterized in that: On both sides of the outer surface of the first fixing block (61), a moving component (8) is provided. The moving component (8) includes a sliding box (81) fixedly connected to both sides of the outer surface of the first fixing block (61). Inside both of the sliding boxes (81), a first slider (82) is slidably connected. And both of the first sliders (82) penetrate through the first fixing block (61) and are respectively fixedly connected to two first sliding rods (63). On the outer surfaces of both of the first sliding rods (63), second through grooves (86) are formed. Inside both of the second through grooves (86), a second sliding rod (87) is slidably connected. And both of the second sliding rods (87) are respectively fixedly connected to two first straight rods (68). One end of both of the first sliders (82) penetrates through the sliding box (81). On the upper surfaces of both of the first sliders (82) at positions outside the sliding box (81), second straight rods (83) are fixedly connected. At positions corresponding to the two second straight rods (83) on the outer circular surface of the annular box (51), limiting rings (84) are fixedly connected. And both of the second straight rods (83) are respectively slidably connected inside the two limiting rings (84). At a position on the outer circular surface of the second bevel gear (618) close to the push block (55), a conical block (88) is fixedly connected. On the lower surfaces of both of the first sliders (82) and the first sliding rods (63), fourth springs (85) are provided.

9. The multi-degree-of-freedom robotic arm for intelligent industrial robots according to claim 8, wherein: Between the second sliding rod (87) and the second through groove (86), a fixing component (9) is provided. The fixing component (9) includes grooves (91) formed on the outer surfaces of the two second sliding rods (87) on the side close to the first slider (82). On one side of the inner walls of both of the second through grooves (86) close to the grooves (91), fifth sliding grooves (92) are formed. And both of the fifth sliding grooves (92) extend into the first slider (82). Inside both of the fifth sliding grooves (92), sliding blocks (93) are slidably connected. On one side of the outer surfaces of both of the sliding blocks (93), trapezoidal grooves (94) are formed. At positions on one side of the inner walls of both of the fifth sliding grooves (92) corresponding to the trapezoidal grooves (94), sixth sliding grooves (96) are formed. Inside both of the sixth sliding grooves (96), first trapezoidal sliders (97) are slidably connected. On the side of the outer surfaces of both of the sliding blocks (93) away from the grooves (91), two fifth springs (95) are provided. One end of both of the first trapezoidal sliders (97) away from the sliding blocks (93) is fixedly connected to second trapezoidal sliders (98). On one side of the inner walls of both of the sixth sliding grooves (96) away from the fifth sliding grooves (92), seventh sliding grooves (910) are formed. Inside both of the seventh sliding grooves (910), third trapezoidal sliders (911) are slidably connected. On the upper surfaces of both of the third trapezoidal sliders (911), third straight rods (912) are fixedly connected. And the upper ends of both of the third straight rods (912) penetrate through the second straight rod (83). On the upper surface of the conical block (88), a conical plate (913) is fixedly connected.

10. The multi-degree-of-freedom robotic arm for intelligent industrial robots according to claim 9, wherein: The upper surfaces of both of the second straight rods (83) are provided with eighth chutes (914). A fourth straight rod (915) is slidably connected to the interior of each of the two eighth chutes (914), and two third straight rods (912) are respectively fixedly connected to the two fourth straight rods (915). A seventh spring (916) is arranged on the lower surface of each of the two fourth straight rods (915). Two sixth springs (99) are arranged on the outer surface of the second trapezoidal slider (98) near one side of the first trapezoidal slider (97).

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