阅读说明：本技术 一种紧凑型长跨距钢丝绳牵引后置的抛涂头摆动装置 (Compact type long-span steel wire rope traction postposition throwing coating head swinging device ) 是由 赵杰 刘玉斌 王雪峰 王勇 李长乐 张英杰 张学贺 周岳松 冯冰 李辉 于 2021-06-23 设计创作，主要内容包括：本发明提供一种紧凑型长跨距钢丝绳牵引后置的抛涂头摆动装置,通过在抛杆的前端和后端分别设置可旋摆涂敷头模块和钢丝绳牵引组模块,利用钢丝绳牵引组模块的驱动,控制钢丝绳的精准伸缩以实现抛涂头的准确摆动,从而扩大抛涂头涂覆空间,使其在具有兼顾涂覆质量和效率能力的同时,能实现抛涂头在不同长度,不同直径发动机壳体内,对不同规格封头内腔的非规则曲面的涂胶作业,从而解决现有技术中存在的问题。(The invention provides a compact long-span steel wire rope traction postposition throwing head swinging device, which is characterized in that a rotatable swinging coating head module and a steel wire rope traction group module are respectively arranged at the front end and the rear end of a throwing rod, and the accurate expansion of a steel wire rope is controlled by utilizing the driving of the steel wire rope traction group module so as to realize the accurate swinging of the throwing head, thereby expanding the coating space of the throwing head, ensuring that the throwing head can realize the gluing operation of irregular curved surfaces of end socket inner cavities with different specifications in engine casings with different lengths and different diameters while having the coating quality and efficiency capacity, and further solving the problems in the prior art.)

1. A compact type polishing head swinging device with a long-span steel wire rope traction rear position is characterized in that a coating head module (1), a steel wire rope traction group module (2), a polishing rod (5) and a steel wire (3) can be swung in a rotating mode;

the swinging coating head module (1) is connected with the front end of a throwing rod (5), a hollow inner cavity is arranged at the rear end of the throwing rod (5), a steel wire rope traction group module (2) is arranged in the hollow inner cavity arranged at the rear end of the throwing rod (5), the swinging coating head module (1) is connected with the steel wire rope traction group module (2) through a steel wire (3), and the steel wire rope traction group module (2) drives the steel wire (3) to stretch and retract so as to drive the swinging coating head module (1) to swing;

the rotary swing coating head module (1) comprises a rotary support rod (105) and a coating head (0); the number of the rotary supporting rods (105) is 2, the rear end of each rotary supporting rod (105) is connected with the front end of the polishing rod (5), the front end of each rotary supporting rod is connected with the side face of the coating head (0) through a rotary connecting component, and the steel wires (3) are wound on the rotary connecting components; the rotary connecting component is driven by the steel wire (3) to rotate, and then the coating head (0) is driven to swing;

the steel wire rope traction group module (2) comprises a motor component, a transmission component and an installation mechanism; the motor assembly and the transmission assembly are arranged in an inner cavity at the rear end of the throwing rod (5) through an installation mechanism, an output shaft of the motor assembly is connected with the transmission assembly, the steel wire (3) is wound in the transmission assembly, and the motor assembly drives the transmission assembly to enable the steel wire (3) to stretch and retract.

2. The compact type long-span steel wire rope traction postposition throwing head swinging device is characterized in that the rear end of the rotating support rod (105) is connected with the front end of the throwing rod (5) through an embedded ring flange seat (101);

the rotating connection assembly comprises a bearing (106), a pin and a knurled wire wheel (107);

a bearing installation groove is formed in the rotary support rod (105), and a bearing (106) is arranged in the bearing installation groove; the inner ring of the bearing (106) is matched with the knurled steel wire wheel (107); the coating head (0) is provided with a mounting hole corresponding to the central through hole of the knurled steel wire wheel (107), and the pin penetrates through the central through hole of the knurled steel wire wheel (107) to be matched with the mounting hole so as to realize the connection of the rotary stay bar (105) and the coating head (0);

and a steel wire groove for winding the steel wire (3) is formed in the side surface of the knurled steel wire wheel (107).

3. The compact long span wire rope trailing swinging device of the throwing and coating head according to claim 1, wherein the transmission assembly comprises a spinning wheel (204), a guide wire wheel (205) and a pulley block (207); the screwing wheel (204) is arranged on an output shaft of the motor assembly, a front knurling groove and a rear knurling groove are formed in the outer side face of the screwing wheel, the front knurling groove and the rear knurling groove are two parallel annular grooves, and knurling is engraved in the annular grooves;

the guide steel wire wheel (205) comprises a first guide steel wire wheel and a second guide steel wire wheel respectively; the pulley block (207) comprises a first pulley block and a second pulley block;

after the steel wire (3) is wound on the knurled steel wire wheel (107), one end of the steel wire is wound in the front knurled groove of the screwing wheel (204) through the first pulley block and the first guide steel wire wheel, the other end of the steel wire is wound in the rear knurled groove of the screwing wheel (204) through the second pulley block and the second guide steel wire wheel, and the winding directions of the steel wire (3) in the front knurled groove and the rear knurled groove are opposite.

4. A compact long span wire rope traction postposition throwing head swing device according to claim 3, characterized in that the number of knurled wire wheels (107) is 2, the wire (3) is wound around one knurled wire wheel (107), and the other knurled wire wheel (107) is used as an alternative.

5. A compact long span wire rope trailing throwing-coating head swing device according to claim 3, characterized in that the first and second pulley blocks of the pulley block (207) each comprise a front and rear sub-pulley block arranged from front to rear, each of said sub-pulley blocks comprising 2 sub-pulleys with different spindle heights;

after the steel wire (3) is wound on the knurled steel wire wheel (107), the steel wire is wound on the guide steel wire wheel (205) after sequentially passing through a high sub pulley and a low sub pulley in the front sub pulley block, a low sub pulley and a high sub pulley in the rear sub pulley block;

the connecting line of the outlet position of the steel wire (3) in the knurled steel wire wheel (107) and the inlet position of the high-order pulley in the front sub-pulley block, the connecting line of the outlet position of the steel wire (3) in the low-order pulley in the front sub-pulley block and the inlet position of the low-order pulley in the rear sub-pulley block, and the connecting line of the outlet position of the steel wire (3) in the high-order pulley in the rear sub-pulley block and the inlet position of the guide steel wire wheel (205) are parallel to the axis of the throwing rod (5).

6. The compact long span steel wire rope traction postposition throwing head swinging device according to any one of claims 3-5, characterized in that the rotating shaft direction of the knurled wire wheel (107) is parallel to the rotating shaft direction of the guide wire wheel (205); any one of the rotating shaft direction of the guide steel wire wheel (205), the rotating shaft direction of each sub-pulley in the pulley block (207) and the rotating shaft direction of the screwing wheel (204) is vertical to the other two rotating shaft directions;

the wire outlet position of the first guide steel wire wheel corresponds to the front knurling groove of the screwing wheel (204), and the wire outlet position of the second guide steel wire wheel corresponds to the rear knurling groove of the screwing wheel (204).

7. The compact long span wire rope trailing swinging device of the throwing and coating head as claimed in claim 1, wherein the mounting mechanism comprises a mounting base (209) and a mounting frame;

the mounting protection frame is enclosed by a main mounting plate (203), a front support frame (208), a rear support frame (206) and a sealing cover plate (212); the front support frame (208) and the rear support frame (206) are vertically arranged on the main mounting plate (203); the front support frames (208) and the rear support frames (206) are arranged from front to back, the number of the front support frames (208) and the number of the rear support frames (206) are respectively 2, and the installation positions of the 2 front support frames (208) and the installation positions of the 2 rear support frames (206) are symmetrical about the axis of the throwing rod (5); the sealing cover plate (212) is arranged on the front support frame (208) and the rear support frame (206) and is parallel to the main mounting plate (203);

the mounting base (209) is fixedly mounted on the lower surface of the main mounting plate (203); the shape of the mounting base (209) is matched with the inner cavity at the rear end of the throwing rod (5);

the transmission assembly is arranged in the installation protection frame and comprises a screwing wheel (204), a guide steel wire wheel (205) and a pulley block (207), the guide steel wire wheel (205) is fixedly installed on the inner side of the rear support frame (206), and the pulley block (207) is fixedly installed on the upper surface of the main installation plate (203).

8. The compact long-span steel wire rope traction postposition throwing and coating head swinging device is characterized in that the motor assembly comprises a servo motor (201) and a speed reducer (202); an output shaft of the servo motor (201) is connected with the speed reducer (202), and an output shaft of the speed reducer (202) is connected with the transmission assembly.

9. The compact long span steel wire rope traction postposition throwing head swinging device according to claim 1, characterized in that a steel wire sleeve is arranged outside the steel wire (3).

10. The compact long span wire rope traction postposition throwing head pendulous device of claim 9, characterized in that the width of the front end of the rotating stay (105) is smaller than that of the rear end; the outer side of the rotary stay bar (105) is provided with a reinforcing rib, and the inner side is provided with a steel wire sleeve fixing piece (104).

11. The compact long span wire rope trailing throwing-coating head swing device according to claim 1, further comprising a limit sensing assembly (210); the displacement sensing assembly comprises a contact seeding piece (2102) and a limit sensor (2103); the contact seeding piece (2102) is fixedly connected with the steel wire (3), the steel wire (3) stretches and retracts to drive the contact seeding piece (2102) to move, and the limit sensor (2103) is used for acquiring position information of the contact seeding piece (2102), so that swinging position information of the rotatable swinging coating head module (1) is obtained.

12. The compact long span wire rope traction postposition throwing and coating head swing device according to claim 5, characterized in that the throwing and coating head swing device further comprises a limit sensing assembly (210); the displacement sensing assembly comprises a contact seeding piece (2102) and a limit sensor (2103);

a sensor mounting plate (2104) and a guide plate (2105) are arranged between the front sub-pulley block and the rear sub-pulley block of the first pulley block or between the front sub-pulley block and the rear sub-pulley block of the second pulley block, and the guide plate (2105) is provided with a guide rail along the telescopic direction of the steel wire (3); the number of the limit sensors (2103) is 2, the limit sensors are fixedly connected with the sensor mounting plate (2104), and the limit sensors are positioned at two ends of a guide rail arranged on the guide plate (2105); the contact seeding piece (2102) is fixedly connected with the steel wire (3) and embedded in a guide rail arranged on the guide plate (2105), the steel wire (3) stretches and retracts to drive the contact seeding piece (2102) to move along the guide rail, and the limit sensor (2103) is used for acquiring the position information of the contact seeding piece (2102), so that the swinging position information of the rotatable swing coating head module (1) is obtained.

13. The compact long-span steel wire rope traction postposition throwing head swinging device according to any one of claims 1 to 12, wherein the diameter of the throwing rod (5) is less than or equal to 140mm, and the length of the throwing rod is 5-10 m.

14. The compact long span wire rope traction postposition throwing head swing device according to claim 1, characterized in that the rotating stay (105) is provided with a bearing mounting groove and a sealing cover (109) is arranged above the bearing mounting groove.

15. The compact long-span steel wire rope traction postposition throwing head swinging device according to claim 1, characterized in that a first pipe connecting plate (102) and a second pipe connecting plate (103) are arranged between 2 rotary supporting rods (105) in the rotary swinging coating head module (1) for fixing a glue supply pipeline.

Technical Field

The invention relates to a coating head swinging device aiming at the field of engine shell lining throwing, in particular to a compact long-span steel wire rope traction postposition throwing and coating head swinging device, and belongs to the technical field of rocket engine charging manufacturing robots.

Background

When the engine shell flies in the atmosphere, the working environment is very severe, and the engine is subject to the scouring of high heat flow density and high pneumatic heat. Thermal protection must be provided between the engine composite housing and the internal filler in such harsh thermal environments; meanwhile, in the process of high-speed flight in the atmosphere, static electricity is generated by friction between the missile and air, the engine propellant is susceptible to the static electricity, and then anti-static measures must be taken between the composite material shell and the internal filling materials of the engine. In order to ensure the successful flight of the engine, a heat-proof and anti-static paint layer is needed, and at the present stage, glue is dipped manually through an ultra-long bamboo rod with a head part bound with fiber cloth, and is repeatedly coated on the inner wall of the shell of the engine. But the coating has the characteristics of high solid content, high viscosity, light weight, low density and low spraying thickness. The requirements on the spraying process parameters and the spraying operation parameters are high, the glue solution is easy to sag due to the fact that manual painting is not controlled in place, the leveling property is poor, the stability is poor, and the coating quality cannot meet the requirements.

The foreign coating devices are more applied in the military aviation field, the resin-based heat-proof coating is developed to the rubber-based flexible heat-proof coating in the aspect of the heat-proof coating in the shell of the solid rocket engine at present, the heat-proof structure is also developed to the composite heat-proof structure from the single coating, the coating process of the heat-proof coating is developed to the special automatic coating form from the traditional manual form, but the coating of the special coating is not reported at all.

The coating technology in China is developed rapidly, the coating device is applied to the automobile industry for the first time, and in the field of automobile coating, a plurality of automobile production lines and part coating production lines are applied with a robot coating technology at present. With the development of economy and the progress of technology, the application of the robot is gradually popularized, the robot enters the household appliance industry, and the robot is applied on a large scale on nearly 30 automatic coating production lines of more than twenty enterprises. In the aspect of coating military products, the technology is gradually increased, but a forming process of manual coating is generally adopted in China for special heat-proof coatings with higher precision and higher viscosity, the coating space is narrow, the convergence sputtering surface of glue solution is poor, the quality stability of the coating is poor, and the coating efficiency is low.

Disclosure of Invention

The invention aims to overcome the defects and provide a compact long-span steel wire rope traction postposition throwing head swinging device, a rotatable swinging coating head module and a steel wire rope traction group module are respectively arranged at the front end and the rear end of a throwing rod, and the steel wire rope traction group module is driven to control the accurate expansion of a steel wire rope so as to realize the accurate swinging of the throwing head, thereby expanding the coating space of the throwing head, ensuring that the throwing head can realize the gluing operation of irregular curved surfaces of end socket inner cavities with different specifications in engine casings with different lengths and different diameters while having the capacity of taking account of the coating quality and the efficiency, and further solving the problems in the prior art.

In order to achieve the above purpose, the invention provides the following technical scheme:

a compact type polishing head swinging device with a long-span steel wire rope traction rear-mounted structure comprises a rotatable swinging coating head module, a steel wire rope traction group module, a polishing rod and a steel wire;

the coating head module capable of swinging is connected with the front end of the throwing rod, a hollow inner cavity is arranged at the rear end of the throwing rod, the steel wire rope traction group module is arranged in the hollow inner cavity arranged at the rear end of the throwing rod, the coating head module capable of swinging is connected with the steel wire rope traction group module through a steel wire, and the steel wire rope traction group module drives the steel wire to stretch and retract so as to drive the coating head module capable of swinging;

the rotary swinging coating head module comprises a rotary support rod and a coating head; the number of the rotary support rods is 2, the rear end of each rotary support rod is connected with the front end of the polishing rod, the front end of each rotary support rod is connected with the side surface of the coating head through a rotary connecting assembly, and steel wires are wound on the rotary connecting assemblies; the rotary connecting component is driven by the steel wire to rotate so as to drive the coating head to swing;

the steel wire rope traction group module comprises a motor assembly, a transmission assembly and an installation mechanism; the motor assembly and the transmission assembly are arranged in an inner cavity at the rear end of the throwing rod through an installation mechanism, an output shaft of the motor assembly is connected with the transmission assembly, the steel wire is wound in the transmission assembly, and the motor assembly drives the transmission assembly to enable the steel wire to stretch and retract.

Furthermore, the rear end of the rotary support rod is connected with the front end of the throwing rod through an embedded ring flange seat;

the rotary connecting assembly comprises a bearing, a pin and a knurled steel wire wheel;

the rotary support rod is provided with a bearing installation groove, and the bearing is arranged in the bearing installation groove; the bearing inner ring is matched with the knurled steel wire wheel; the coating head is provided with a mounting hole corresponding to the central through hole of the knurled steel wire wheel, and the pin penetrates through the central through hole of the knurled steel wire wheel to be matched with the mounting hole so as to realize the connection of the rotary stay bar and the coating head;

and a steel wire groove for winding a steel wire is formed in the side surface of the knurled steel wire wheel.

Furthermore, the transmission assembly comprises a screwing wheel, a guide steel wire wheel and a pulley block; the screwing wheel is arranged on an output shaft of the motor assembly, a front knurling groove and a rear knurling groove are formed in the outer side face of the screwing wheel, the front knurling groove and the rear knurling groove are two parallel annular grooves, and knurling is engraved in the annular grooves;

the guide steel wire wheel comprises a first guide steel wire wheel and a second guide steel wire wheel; the pulley block comprises a first pulley block and a second pulley block;

after the steel wire is wound on the knurled steel wire wheel, one end of the steel wire is wound in the front knurled groove of the screwing wheel after passing through the first pulley block and the first guide steel wire wheel, the other end of the steel wire is wound in the rear knurled groove of the screwing wheel after passing through the second pulley block and the second guide steel wire wheel, and the winding directions of the steel wire in the front knurled groove and the rear knurled groove are opposite.

Further, the number of the knurled steel wire wheels is 2, and the steel wire is wound on one knurled steel wire wheel and the other knurled steel wire wheel as an alternative.

Furthermore, a first pulley block and a second pulley block in the pulley blocks respectively comprise a front sub-pulley block and a rear sub-pulley block which are arranged from front to back, and each group of sub-pulley blocks comprises 2 sub-pulleys with different rotating shaft heights;

after being wound by the knurled steel wire wheel, the steel wire is wound on the guide steel wire wheel after sequentially passing through a high sub pulley, a low sub pulley and a high sub pulley in the front sub pulley block and a low sub pulley and a high sub pulley in the rear sub pulley;

the line of the steel wire at the wire outlet position of the knurled steel wire wheel and the wire inlet position of the high sub-pulley in the front sub-pulley block, the line of the steel wire at the wire outlet position of the low sub-pulley in the front sub-pulley block and the wire inlet position of the low sub-pulley in the rear sub-pulley block, and the line of the steel wire at the wire outlet position of the high sub-pulley in the rear sub-pulley block and the wire inlet position of the guide steel wire wheel are parallel to the axis of the throwing rod.

Further, the rotating shaft direction of the knurled steel wire wheel is parallel to the rotating shaft direction of the guide steel wire wheel; any one of the rotating shaft direction of the guide steel wire wheel, the rotating shaft direction of each sub-pulley in the pulley block and the rotating shaft direction of the screwing wheel is vertical to the other two rotating shaft directions;

the wire outlet position of the first guide steel wire wheel corresponds to the front knurling groove of the screwing wheel, and the wire outlet position of the second guide steel wire wheel corresponds to the rear knurling groove of the screwing wheel.

Further, the mounting mechanism comprises a mounting base and a mounting frame;

the mounting protection frame is enclosed by a main mounting plate, a front support frame, a rear support frame and a sealing cover plate; the front support frame and the rear support frame are vertically arranged on the main mounting plate; the front support frames and the rear support frames are arranged from front to back, the number of the front support frames and the number of the rear support frames are respectively 2, and the installation positions of the 2 front support frames and the installation positions of the 2 rear support frames are symmetrical about the axis of the throwing rod; the sealing cover plate is arranged on the front support frame and the rear support frame and is parallel to the main mounting plate;

the mounting base is fixedly mounted on the lower surface of the main mounting plate; the shape of the mounting base is matched with the inner cavity at the rear end of the throwing rod;

the transmission assembly is arranged in the installation protection frame and comprises a screwing wheel, a guide steel wire wheel and a pulley block, the guide steel wire wheel is fixedly installed on the inner side of the rear support frame, and the pulley block is fixedly installed on the upper surface of the main installation plate.

Further, the motor assembly comprises a servo motor and a speed reducer; an output shaft of the servo motor is connected with a speed reducer, and an output shaft of the speed reducer is connected with the transmission assembly.

Furthermore, a steel wire sleeve is arranged outside the steel wire.

Further, the width of the front end of the rotating support rod is smaller than that of the rear end of the rotating support rod; the outer side of the rotary support rod is provided with a reinforcing rib, and the inner side of the rotary support rod is provided with a steel wire sleeve fixing piece.

Furthermore, the polishing head swinging device also comprises a limit sensing assembly; the displacement sensing assembly comprises a contact seeding piece and a limit sensor; the contact seeding piece is fixedly connected with the steel wire, the steel wire stretches and retracts to drive the contact seeding piece to move, and the limiting sensor is used for acquiring the position information of the contact seeding piece and further acquiring the swinging position information of the rotary-swinging coating head module.

Furthermore, the polishing head swinging device also comprises a limit sensing assembly; the displacement sensing assembly comprises a contact seeding piece and a limit sensor;

a sensor mounting plate and a guide plate are arranged between the front sub-pulley block and the rear sub-pulley block of the first pulley block or between the front sub-pulley block and the rear sub-pulley block of the second pulley block, and the guide plate is provided with a guide rail along the telescopic direction of the steel wire; the number of the limiting sensors is 2, the limiting sensors are fixedly connected with the sensor mounting plate and are positioned at two ends of the guide rail arranged on the guide plate; the contact seeding piece is fixedly connected with the steel wire and embedded in a guide rail arranged on the guide plate, the steel wire stretches and retracts to drive the contact seeding piece to move along the guide rail, and the limiting sensor is used for acquiring the position information of the contact seeding piece and further acquiring the swinging position information of the rotary-swinging coating head module.

Furthermore, the diameter of the throwing rod is less than or equal to 140mm, and the length of the throwing rod is 5-10 m.

Furthermore, a bearing mounting groove is arranged on the rotary support rod, and a sealing cover is arranged above the bearing mounting groove.

Furthermore, in the rotary swing coating head module, a first pipe connecting plate and a second pipe connecting plate are arranged between 2 rotary support rods and used for fixing a glue supply pipeline.

Compared with the prior art, the invention has the following beneficial effects:

(1) according to the compact long-span steel wire rope traction postposition throwing head swinging device, the rotary swinging coating head module and the steel wire rope traction group module are respectively arranged at the front end and the rear end of the throwing rod, and the accurate expansion of the steel wire rope is controlled by utilizing the driving of the steel wire rope traction group module so as to realize the accurate swinging of the throwing head, so that the coating space of the throwing head is enlarged, the throwing head can realize the coating operation of irregular curved surfaces of end socket inner cavities with different specifications in engine casings with different lengths and different diameters while the coating quality and the efficiency capacity are considered;

(2) the invention relates to a compact type polishing and coating head swinging device with a long span steel wire rope traction rear-mounted device, which is characterized in that a rotary connecting assembly which is arranged in a rotary coating head module and is used for driving a coating head to swing is specially designed, and the stretching of the steel wire rope is converted into the swinging of the coating head through the matching of a bearing and a knurled steel wire wheel; meanwhile, the installation of the rotary swinging coating head module at the front end of the throwing rod is realized by utilizing the matching of the rotary connecting assembly and the rotary support rod;

(3) according to the compact type polishing head swinging device with the long-span steel wire rope traction rear-mounted structure, the structure of the rotary support rod is designed to be a structure with a narrow front part and a wide rear part, the reinforcing ribs are added, the strength of the rotary support rod is fully improved, the steel wire sleeve fixing piece is arranged on the inner side of the rotary support rod, and the influence of the expansion of the steel wire on other parts in the device is avoided;

(4) the compact type polishing head swinging device with the long-span steel wire rope traction rear-mounted device considers the influence of factors such as the position, the connection relation and the height of each transmission device in the transmission assembly in the steel wire rope traction assembly module on the steel wire transmission, and simultaneously designs the steel wire winding path according to the transmission assembly, so that the device realizes stable transmission, the transmission efficiency is improved, and the transmission precision is improved;

(5) according to the compact type polishing head swinging device with the long-span steel wire rope traction rear-mounted structure, the installation mechanism in the steel wire rope traction group module is designed according to the design requirement of compactness, so that the installation mechanism ensures that the transmission assembly is stably installed in the inner cavity of the polishing rod and the space of the inner cavity of the polishing rod is fully utilized;

(6) the invention relates to a compact type polishing head swinging device with a long-span steel wire rope traction rear-mounted device.A mounting protection frame with the functions of mounting a transmission assembly and protecting the transmission assembly from being polluted is also designed in a mounting mechanism in a steel wire rope traction group module;

(7) the compact type polishing head swinging device with the long-span steel wire rope traction rear-mounted structure is provided with the limiting sensing assembly, and the swinging position information of the coating head module can be swung rotationally through the matching of the limiting sensor, the touch seeding piece and the guide plate, so that the swinging of the coating head module can be controlled accurately;

(8) the compact type polishing and coating head swinging device with the long-span steel wire rope traction rear-mounted device has the maximum outer envelope diameter reaching phi 140mm, can be used for full coverage of coating spaces of curved surface inner cavity linings of various types of engine shells with the inner diameter larger than phi 200mm, improves the working space for the coating head at the present stage, reduces the difficulty of polishing and coating the curved surface of the end socket, and has wide application prospect.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a compact long-span wire rope traction postposition throwing head swing device of the invention; wherein, fig. 1(a) is a cross-sectional view of a transverse structure of the swinging device of the polishing head, and fig. 1(b) is an integral structure of the swinging device of the polishing head;

FIG. 2 is a schematic structural diagram of a head module capable of swinging in a rotary manner in the swinging device of the coating head of the invention;

FIG. 3 is a schematic structural diagram of a wire rope traction group module in the swinging device of the coating head of the invention; wherein fig. 3(a) is a front view of a wire rope traction group module, and fig. 3(b) is a half-section top view of the wire rope traction group module;

FIG. 4 is a schematic view of a spinning wheel of the swing device of the polishing head of the present invention;

FIG. 5 is an isometric view of the wire rope pulling block module structure in the swing apparatus of the coating head of the present invention;

FIG. 6 is an isometric view of a swingable coating head module structure in a swing apparatus of a coating head according to the present invention;

FIG. 7 is a schematic view of a rotary stay bar in the swinging device of the throwing and coating head of the present invention.

Detailed Description

The features and advantages of the present invention will become more apparent and appreciated from the following detailed description of the invention.

The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

The invention provides a compact type long-span steel wire rope traction postposition throwing head swinging device, aiming at overcoming the defects of small coating space and poor comprehensive performance of a glue solution convergence sputtering surface of the existing throwing head and solving the problems that the size of a coating device, the size of an engine shell to be coated and a curved surface inner cavity of a shell end socket are difficult to coat.

In the design process of the throwing and coating head swing device, parameters of throwing and coating inner cavities of curved surface end sockets with different diameters are researched according to the physical characteristics of the coating space of the solid rocket engine shell throwing and coating head, the structure of the whole set of throwing and coating head swing device is established, and a relevant process theoretical model for throwing and coating the high-viscosity coating on the inner surface of the curved surface inner cavity of the solid rocket engine shell end socket is completed. Meanwhile, the coating space design of the polishing device is optimized, and the coating range of the polishing head in which glue drops are converged, the smallest deepenable inner diameter of the shell, glue supply and quick replacement, pipeline wiring and other factors are fully considered, so that the coating range of the polishing head is expanded, and the compact structure of the device is realized. The maximum outer enveloping diameter of the throwing rod (preferably a steel pipe) of the device is only phi 140mm, and the device can be used for fully covering the coating space of the liner of the curved surface inner cavity of each type of engine shell with the inner diameter larger than phi 200mm, so that the working space of the coating head at the present stage is increased, and the difficulty of the curved surface throwing coating of the end socket is reduced.

Example 1

A compact long span wire rope pulls the postpositional throwing and scribbles the first pendulous device, mainly include one can swing and scribble the head module 1, a wire rope pulls the group module, a steel wire 3, and throw the pole 5; in this embodiment, the throwing rod is a steel pipe with a circular cross section.

The throwing coating head swinging device is used for coating glue solution in a glue supply device 4 arranged between a rotatable coating head module 1 and a steel wire rope traction group module on the curved surface of an end socket of an engine shell; the glue supply device 4 conveys the glue solution to the rotary swing coating head module 1 through a glue supply pipeline.

As shown in fig. 1 and 5, a compact long span wire rope traction postposition throwing coating head swing device has the specific structure that: the rotary-swinging coating head module 1 is arranged at the foremost end of a throwing rod 5 and is connected with a rear steel wire rope traction group module 2 by crossing a high-viscosity glue supply device 4 through a steel wire 3 with a steel sleeve. The accurate stretching of the steel wire rope is controlled by the driving of the steel wire rope traction group module 2 so as to realize the accurate swing of the throwing and coating head, thereby enlarging the coating space of the throwing and coating head and completing the set coating task.

As shown in fig. 2 and fig. 6, in the present invention, the rotatable coating head module 1 has the following composition structure: the ring flange seat 101 is connected with 2 rotatory vaulting poles 105, installs respectively between 2 rotatory vaulting poles 105 to be used for fixed confession to glue the first pipe connecting plate 102 and the second of the pipeline connecting plate 103 of crossing of pipeline and other pipelines, and first pipe connecting plate 102 and second are crossed the pipe connecting plate 103 and are located between coating head 0 and ring flange seat 101.

The whole assembly of the coating head module 1 capable of swinging is in a U-like shape, 2 rotary support rods 105 are provided with grooves for mounting bearings 106, the inner rings of the bearings 106 are matched with a knurled steel wire wheel 107, the coating head 0 is provided with mounting holes corresponding to the central through hole of the knurled steel wire wheel 107, pins penetrate through the central through hole of the knurled steel wire wheel 107 and are matched with the mounting holes, and the connection of the rotary support rods 105 and the coating head 0 is realized;

the steel wire 3 twines on annular knurl steel wire wheel 107, and the flexible annular knurl steel wire wheel 107 that drives of during operation steel wire is rotatory, realizes the swing of coating head then.

As shown in fig. 3(a) and 3(b), in the present invention, the wire rope traction group module 2 is structured as: the high-precision servo motor 201 is connected with the speed reducer 202 in a matched mode, the outline of the bottom surface of the speed reducer 202 is arc-shaped, the mounting base 209 is fixedly mounted on the lower surface of the main mounting plate 203, the main mounting plate 203 is provided with an opening matched with the bottom surface of the speed reducer 202, the mounting base 209 is provided with a groove matched with the bottom surface of the speed reducer 202, the inner surface of the mounting base 209 is arc-shaped, and the speed reducer 202 is matched with the mounting base 209 and mounted in the inner cavity of the throwing rod 5. The extension shaft of the speed reducer 202 is provided with a screwing wheel 204 which is in a double-row groove knurling structure, as shown in fig. 4. The main mounting plate 203 is bolted to the front support frame 208, the rear support frame 206 and the seal cover plate 212 to form a compact semi-enclosed space. The pulley block 207 comprises a first pulley block and a second pulley block respectively arranged at two sides of the main mounting plate 203, and the first pulley block and the second pulley block comprise a front sub-pulley block and a rear sub-pulley block, namely 4 sets of sub-pulley blocks, which are all arranged in the semi-closed space, so that the transmission assembly is prevented from being polluted. The inner side of the rear support frame 206 is designed with a guide wire wheel 205. The mounting base 209 and the arc supporting block 211 are connected with the main mounting plate 203 through bolts, and the arc supporting block 211 is used for mounting and supporting the steel wire rope traction group module, so that the steel wire rope high-strength pretightening force is prevented from deforming the structure of the main mounting plate 203. The steel wire rope traction group module 2 is integrally and tightly assembled and then embedded into the rearmost end of the throwing rod 5.

The structural characteristics of the coating head module 1 and the steel wire rope traction group module 2 which can swing rotationally are as follows: the overall structure of the rotary coating head module 1 is U-shaped, the material of the main part consisting of the rotary coating head module 1 and the steel wire rope traction group module 2 is titanium alloy (alpha series), the overall strength of the two modules is reliable, the quality is light, the maximum outer enveloping diameter size of the rotary coating head module 1 and the steel wire rope traction group module 2 is less than 140mm, the rotary coating head module and the steel wire rope traction group module are respectively arranged at the front end and the rear end of a cantilever throwing rod with the length of 6.5 meters and the wall thickness of the cantilever throwing rod is less than or equal to 1.5 mm.

As shown in fig. 7, the structural features of the rotational brace 105 are: the rotary stay 105 is designed to be a structure with a narrow front part and a wide back part in the width direction, and the width direction is a direction vertical to the axes of the knurled steel wire wheel 107 and the throwing rod 5;

the back, i.e., outer side, of the rotating brace 105 is provided with a structural feature of ribs to improve strength. Two steel sleeve fixing pieces 104 are arranged on the inner side of the narrow section of the rotary stay bar 105, and the steel wire sleeve can be effectively prevented from moving in the swinging process of the coating head. The seal cover 109 is designed above the bearing mounting groove at the outer edge of the narrow end (front end) of the rotating stay 105, and can effectively prevent high-viscosity coating glue from invading the precision bearing 106.

The structure of the steel wire rope winding of the steel wire rope traction group module 2 is characterized in that two ends of a steel wire 3 wound on the knurled steel wire wheel 107 firstly respectively wind a first pulley block and a second pulley block which are arranged on two sides of the main mounting plate 203, and then are fixed with a front knurling groove and a rear knurling groove of a screwing wheel 204 of a double-row groove knurling structure through a guide steel wire wheel 205 on the inner side of a support frame 206. The front and back knurled grooves of the screwing wheel 204 with the double-row groove knurled structure are wound with 2 circles of steel wires, so that the winding friction force of the steel wires is increased, and the stretching precision of the steel wire rope is improved. The number of the knurled steel wire wheels 107 is two, the steel wire 3 is wound on only one knurled steel wire wheel 107, the two ends are the two ends of the steel wire 3 wound on one knurled steel wire wheel 107, in the practical process, only one knurled steel wire wheel is used, and the other one is used as an alternative.

The design has spacing sensing component 210 in the middle of first assembly pulley or second assembly pulley, the sub-assembly pulley of homonymy promptly, and its structural feature is: a guide plate 2105 and a sensor mounting plate 2104 are erected between the front sub-pulley block and the rear sub-pulley block on the same side. Two ends of the guide plate 2105 are connected with two ends of the sensor mounting plate 2104 through the block 2101, and are fixed on the front sub-pulley block and the rear sub-pulley block at the same side through bolts. Two limit sensors 2103 are installed on the sensor mounting plate 2104, the contact seeding piece 2102 is embedded in a guide rail of the guide plate 2105 after being fixedly connected with the steel wire rope 3, the steel wire rope 3 stretches and retracts to drive the contact seeding piece 2102 to move back and forth on the guide plate 2105 to trigger the limit sensors 2103 to feed back swing position information, and the limit sensors 2103 are limit sensors.

The invention has been described in detail with reference to specific embodiments and illustrative examples, but the description is not intended to be construed in a limiting sense. Those skilled in the art will appreciate that various equivalent substitutions, modifications or improvements may be made to the technical solution of the present invention and its embodiments without departing from the spirit and scope of the present invention, which fall within the scope of the present invention. The scope of the invention is defined by the appended claims.

Those skilled in the art will appreciate that those matters not described in detail in the present specification are well known in the art.