High-temperature-resistant manipulator transmission structure

Abstract

The utility model discloses a high temperature resistant mechanical arm transmission structure which comprises a mechanical arm body, a movable arm installed on the top of the mechanical arm body and a casting conversion vessel, an installation frame of a U-shaped structure is arranged at the bottom of the movable arm, and the casting conversion vessel rotates at one end of the installation frame through two symmetrically-arranged rotating shafts. A driving assembly used for driving the mounting frame to rotate is arranged on one side of the mounting frame and comprises a mounting shell fixedly arranged on one side of the mounting frame, a worm and gear transmission set arranged in the mounting shell and a transmission shaft rotationally arranged in the mounting shell, and the transmission shaft is used for transmitting power to the worm and gear transmission set and is made of alloy structure steel. A tungsten disulfide coating is arranged on the surface of the worm and gear transmission set, and the mounting shell is filled with a molybdenum disulfide lubricant. Through the structure, the whole structure is reasonable in design, resistant to high temperature and abrasion, suitable for a long-term high-temperature operation environment and high in practicability and reliability.

Description

Technical Field

[0001] This utility model relates to the field of industrial robot technology, and in particular to a high-temperature resistant robotic arm transmission structure. Background Technology

[0002] Industrial robots are multi-jointed manipulators or multi-degree-of-freedom robotic devices widely used in industrial fields. They possess a certain degree of automation and can perform various industrial processing and manufacturing functions using their own power and control capabilities. Industrial robots are widely used in various industrial sectors such as electronics, logistics, and chemicals.

[0003] In the prior art, a search revealed a Chinese patent disclosing a "High-Temperature Resistant Robotic Arm Transmission Structure," application number "202421363891.2." This patent mainly includes a robotic arm, a casting converter, and a transmission component connecting the robotic arm and the casting converter. While this patent can prevent damage to bearing components from prolonged exposure to high temperatures, thus extending the service life of the transmission component and indirectly extending the service life of the robotic arm, the tilting cylinder, located near the casting converter, lacks effective heat insulation. High-temperature radiant heat directly acts on the cylinder body and seals, leading to aging and failure of the cylinder seals, carbonization and deterioration of the hydraulic oil, and instability in cylinder operation. Furthermore, the addition of a cooling chamber inside the robotic arm, which circulates a cooling medium (such as water or liquid metal), occupies a significant amount of internal space, increasing the robotic arm's weight and inertial load, potentially reducing motion response speed and positioning accuracy, making it difficult to meet the high requirements of trajectory control. Therefore, this utility model provides a high-temperature resistant robotic arm transmission structure to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this utility model is to provide a high-temperature resistant robotic arm transmission structure. The overall structure is reasonably designed, resistant to high temperatures and wear, and suitable for long-term high-temperature working environments. It has high practicality and reliability.

[0005] To achieve the above objectives, a high-temperature resistant robotic arm transmission structure is provided, comprising a robotic arm body, a movable arm mounted on the top of the robotic arm body, and a casting converter. The movable arm has a U-shaped mounting bracket at its bottom, and the casting converter rotates at one end of the mounting bracket via two symmetrically arranged pivots.

[0006] One side of the mounting bracket is provided with a drive assembly for rotating the mounting bracket. The drive assembly includes a mounting shell fixed to one side of the mounting bracket, a worm gear transmission assembly disposed inside the mounting shell, and a transmission shaft rotating inside the mounting shell. The transmission shaft is used to transmit power to the worm gear transmission assembly and is made of alloy structural steel. The surface of the worm gear transmission assembly is coated with tungsten disulfide, and the interior of the mounting shell is filled with molybdenum disulfide lubricant.

[0007] According to the high-temperature resistant manipulator transmission structure, the worm gear transmission assembly includes a worm wheel fixedly connected to the rotating shaft and a worm fixedly connected to the transmission shaft. The worm and the worm wheel are meshed together. The drive assembly also includes a motor fixed on the mounting bracket and located away from the mounting housing. The transmission shaft is connected to the motor.

[0008] According to the high-temperature resistant robotic arm transmission structure, the mounting bracket is symmetrically fixed with connecting columns on the side near the motor, and a cylinder is fixedly fixed at the bottom of the movable arm, with the bottom end of the cylinder piston rod fixedly connected to the connecting columns.

[0009] According to the high-temperature resistant robotic arm transmission structure, a partition is fixed inside the mounting shell, and a hollow cavity is formed between the partition and the inner wall of the mounting shell.

[0010] According to the aforementioned high-temperature resistant robotic arm transmission structure, the outer cover of the motor is provided with a first protective cover fixed to the outside of the mounting frame, and the first protective cover is a ceramic matrix composite heat insulation cover.

[0011] According to the aforementioned high-temperature resistant robotic arm transmission structure, the outer cover of the cylinder is provided with a second protective cover fixed to the bottom of the movable arm, and the second protective cover is also a ceramic matrix composite heat insulation cover.

[0012] According to the aforementioned high-temperature resistant robotic arm transmission structure, the mounting bracket, rotating shaft, and connecting column are all made of high-temperature alloy material.

[0013] This utility model has the following beneficial effects:

[0014] 1. Compared with existing technologies, the worm gear transmission assembly is coated with a tungsten disulfide coating, combined with molybdenum disulfide lubricant inside the mounting housing, which reduces the coefficient of friction and improves the transmission stability in high-temperature environments. The motor is located away from the high-temperature zone and uses a drive shaft for power transmission, realizing a split transmission structure, reducing the impact of high temperature on the motor. The overall structure is reasonably designed, resistant to high temperatures and wear, and suitable for long-term high-temperature operation environments, with high practicality and reliability. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0016] Figure 1 This is a first-view structural schematic diagram of a high-temperature resistant robotic arm transmission structure according to the present invention.

[0017] Figure 2 This is a second-view structural schematic diagram of a high-temperature resistant robotic arm transmission structure according to the present invention;

[0018] Figure 3 This is a schematic diagram of the internal cross-sectional structure of the second protective cover, the first protective cover, and the mounting shell of the high-temperature resistant robotic arm transmission structure of this utility model.

[0019] Figure 4 This utility model relates to a high-temperature resistant robotic arm transmission structure. Figure 3 Enlarged structural diagram at point A in the middle.

[0020] Legend:

[0021] 1. Robotic arm body; 2. Casting converter; 3. Mounting frame; 4. Rotating shaft; 5. Worm gear; 6. Drive shaft; 7. Worm; 8. Mounting shell; 9. Hollow cavity; 10. Motor; 11. First protective cover; 12. Connecting column; 13. Cylinder; 14. Second protective cover; 15. Movable arm. Detailed Implementation

[0022] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the description of the textual part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0023] Reference Figure 1-4 This utility model discloses a high-temperature resistant robotic arm transmission structure, comprising a robotic arm body 1, a movable arm 15 mounted on the top of the robotic arm body 1, and a casting converter 2. The movable arm 15 has a U-shaped mounting frame 3 at its bottom. The casting converter 2 rotates at one end of the mounting frame 3 via two symmetrically arranged rotating shafts 4. A drive assembly is located on one side of the mounting frame 3 to drive the casting converter 2 to rotate. The drive assembly includes a mounting shell 8 fixed to one side of the mounting frame 3, a worm gear transmission assembly located inside the mounting shell 8, and a transmission shaft 6 rotating inside the mounting shell 8. The transmission shaft 6 transmits power to the worm gear transmission assembly and is made of alloy structural steel, possessing good high-temperature strength and fatigue resistance. The surface of the worm gear transmission assembly is coated with tungsten disulfide, and the mounting shell 8 is filled with molybdenum disulfide lubricant.

[0024] The drive shaft 6, powered by the motor 10, drives the worm 7 to rotate. The rotating worm 7 synchronously drives the worm wheel 5 and its shaft 4 to rotate, thus rotating the casting converter 2 to complete the casting process. Furthermore, the tungsten disulfide coating on the surfaces of the worm 7 and worm wheel 5, located near the high-temperature region, not only has a low coefficient of friction and good lubrication performance, but its high-temperature resistance also ensures the stability of the worm 7 and worm wheel 5 under high-temperature conditions. The molybdenum disulfide lubricant in the transmission area further reduces friction and wear between the worm 7 and worm wheel 5. Molybdenum disulfide also has a high melting point, oxidation resistance, and good chemical stability; these properties ensure good lubrication even under harsh high-temperature environments, thereby guaranteeing the stability of the worm gear transmission assembly.

[0025] The worm gear transmission assembly includes a worm wheel 5 fixedly connected to the rotating shaft 4 and a worm 7 fixedly connected to the transmission shaft 6. The worm 7 is meshed with the worm wheel 5. The drive assembly also includes a motor 10 fixed on the mounting bracket 3 and located away from the mounting housing 8. The transmission shaft 6 is connected to the motor 10.

[0026] The motor 10 drives the worm 7 to rotate via the transmission shaft 6, which in turn drives the worm wheel 5 and the rotating shaft 4 to rotate, thereby realizing the angle adjustment of the casting converter 2. The motor 10 is located away from the high-temperature area and uses the transmission shaft 6 for power transmission, realizing a split transmission structure and reducing the impact of high temperature on the motor 10.

[0027] The mounting bracket 3 is symmetrically fixed with connecting columns 12 on one side near the motor 10. The bottom of the movable arm 15 is fixed with a cylinder 13. The bottom end of the piston rod of the cylinder 13 is fixedly connected to the connecting column 12. The mounting bracket 3, the rotating shaft 4 and the connecting column 12 are all made of high temperature alloy material, and the mounting bracket 3 is set parallel to the casting converter 2.

[0028] The cylinder 13 is used to drive the lifting and lowering movement of the mounting bracket 3, which can realize the height position adjustment of the casting converter 2. The mounting bracket 3, the rotating shaft 4 and the connecting column 12 near the casting converter 2 are all made of high temperature alloy material (such as Inconel 718 or GH4169, etc.) to ensure their structural strength under high temperature conditions.

[0029] The outer cover of the motor 10 is provided with a first protective cover 11 fixed to the outside of the mounting bracket 3, and the outer cover of the cylinder 13 is provided with a second protective cover 14 fixed to the bottom of the movable arm 15. The first protective cover 11 and the second protective cover 14 are ceramic matrix composite heat insulation covers to improve heat insulation performance and effectively reduce the impact of external high temperature on the motor 10 and the cylinder 13.

[0030] A partition is fixed inside the mounting housing 8, and a hollow cavity 9 is formed between the partition and the inner wall of the mounting housing 8. The hollow cavity 9 effectively isolates external high temperature and ensures stable operation of the worm gear transmission assembly in a high-temperature environment.

[0031] Working principle: The drive shaft 6, powered by the motor 10, drives the worm 7 to rotate. The rotating worm 7 synchronously drives the worm wheel 5 and its shaft 4 to rotate, thus rotating the casting converter 2 to complete the casting process. Furthermore, the tungsten disulfide coating on the surfaces of the worm 7 and worm wheel 5, located near the high-temperature region, not only has a low coefficient of friction and good lubrication performance, but its high-temperature resistance also ensures the stability of the worm 7 and worm wheel 5 in high-temperature environments. The molybdenum disulfide lubricant in the transmission area further reduces friction and wear between the worm 7 and worm wheel 5. Molybdenum disulfide also has a high melting point, oxidation resistance, and good chemical stability; these characteristics ensure good lubrication even in harsh high-temperature environments, thereby guaranteeing the stability of the worm gear transmission assembly structure.

[0032] Furthermore, the motor 10 is located away from the high-temperature area and uses the drive shaft 6 for power transmission, realizing a split transmission structure, reducing the impact of high temperature on the motor 10. The overall structure is reasonably designed, resistant to high temperature and wear, and suitable for long-term high-temperature working environments, with high practicality and reliability.

[0033] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A high-temperature resistant robotic arm transmission structure, characterized in that, It includes a robotic arm body (1), a movable arm (15) mounted on the top of the robotic arm body (1), and a casting converter (2). The movable arm (15) has a U-shaped mounting bracket (3) at its bottom. The casting converter (2) rotates at one end of the mounting bracket (3) via two symmetrically arranged rotating shafts (4). The mounting bracket (3) has a drive assembly on one side for rotating the mounting bracket (3). The drive assembly includes a mounting shell (8) fixed on one side of the mounting bracket (3), a worm gear transmission assembly inside the mounting shell (8), and a transmission shaft (6) rotating inside the mounting shell (8). The transmission shaft (6) is used to transmit power to the worm gear transmission assembly and is made of alloy structural steel. The surface of the worm gear transmission assembly is coated with tungsten disulfide. The mounting shell (8) is filled with molybdenum disulfide lubricant.

2. The high-temperature resistant robotic arm transmission structure according to claim 1, characterized in that, The worm gear transmission assembly includes a worm wheel (5) fixedly connected to the rotating shaft (4) and a worm (7) fixedly connected to the transmission shaft (6). The worm (7) meshes with the worm wheel (5). The drive assembly also includes a motor (10) fixed on the mounting bracket (3) and located away from the mounting shell (8). The transmission shaft (6) is connected to the motor (10).

3. The high-temperature resistant robotic arm transmission structure according to claim 2, characterized in that, The mounting bracket (3) is symmetrically fixed with connecting columns (12) on the side near the motor (10), and the bottom of the movable arm (15) is fixed with a cylinder (13), and the bottom end of the piston rod of the cylinder (13) is fixedly connected to the connecting column (12).

4. The high-temperature resistant robotic arm transmission structure according to claim 3, characterized in that, A partition is fixed inside the mounting shell (8), and a hollow cavity (9) is formed between the partition and the inner wall of the mounting shell (8).

5. The high-temperature resistant robotic arm transmission structure according to claim 4, characterized in that, The outer cover of the motor (10) is provided with a first protective cover (11) fixed to the outside of the mounting bracket (3), and the first protective cover (11) is a ceramic matrix composite heat insulation cover.

6. The high-temperature resistant robotic arm transmission structure according to claim 5, characterized in that, The outer cover of the cylinder (13) is provided with a second protective cover (14) fixed to the bottom of the movable arm (15), and the second protective cover (14) is also a ceramic matrix composite heat insulation cover.

7. The high-temperature resistant robotic arm transmission structure according to claim 6, characterized in that, The mounting bracket (3), the rotating shaft (4), and the connecting column (12) are all made of high-temperature alloy.

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