A suspension spray device for casing collars

Abstract

The present application belongs to the field of suspension spraying device, and proposes a suspension spraying device for casing collar, which comprises a suspension conveying mechanism, a spraying house and a carrier. The carrier comprises a boom, the top end of the boom is provided with a multi-rib hole and is connected with the suspension conveying mechanism through a multi-rib cylinder, the bottom of the boom is provided with a pair of support rods, the two support rods are symmetrically bent into a shape of a loop, the bent ends of the two support rods are provided with support shafts, a support cylinder which is rotationally connected with the support shafts is arranged between the two support rods, the support cylinder is a conical structure and is used for nesting and carrying the casing collar, the support cylinder is symmetrically provided with a feeding swing opening and a discharging swing opening for swing cooperation with the two support rods, the feeding swing opening cooperates with a swing limiting shoulder arranged on the support rod, and an inner support mechanism and a rotary driving mechanism are arranged in the support cylinder. The present application is reasonable in design, can effectively carry the casing collar, is convenient for taking and placing, and is beneficial to improving the spraying operation efficiency.

Description

Technical Field

[0001] This invention belongs to the field of suspended spraying devices, and particularly relates to a suspended spraying device with a sleeve coupling. Background Technology

[0002] Casing couplings are specialized fittings for oil and gas drilling. They are high-strength, short cylindrical tubes with internal threads, used to connect two casings with external threads at both ends to form a continuous downhole casing string. The outer wall of the casing coupling is painted to prevent rust and facilitate rapid identification of the steel grade. Oilfields use different colors to distinguish steel grades: J55 green, N80 blue, P110 red, etc., to avoid using the wrong casing and prevent downhole accidents.

[0003] Currently, the spraying station for sleeve couplings is generally a fixed station, requiring manual labor to move the sleeve couplings to the work platform or pull the spray gun to the sleeve coupling position for spraying, which is not conducive to improving work efficiency. While suspended spraying lines offer some improvement in efficiency compared to manual spraying lines, most spraying workshops use non-specific fixtures for sleeve couplings. For example, hooks cannot directly suspend sleeve couplings, are not compatible with sleeve couplings, and direct suspension may result in significant deviations due to center of gravity issues, affecting the spraying efficiency of the spray booth. Summary of the Invention

[0004] This invention addresses the technical problems existing in using suspended spraying lines in sleeve coupling workshops by proposing a suspended spraying device for sleeve couplings that is reasonably designed, can effectively support sleeve couplings, is easy to pick up and put down, and helps improve the efficiency of spraying operations.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: The present invention provides a suspended spraying device for sleeve couplings, including a suspended conveying mechanism and a spray booth. The suspended end of the suspended conveying mechanism is provided with a carrier, the carrier including a hanging rod. The top end of the hanging rod is provided with a polygonal hole and connected to the suspended conveying mechanism through a polygonal prism. The bottom of the hanging rod is provided with a pair of support rods. The two support rods are symmetrically bent into a U-shape and the bent ends are provided with support shafts. A support cylinder rotatably connected to the support shaft is provided between the two support rods. The support cylinder has a conical structure and is used to nest and support the sleeve coupling. The support cylinder is symmetrically provided with a loading swing port and a unloading swing port for swinging cooperation with the two support rods. The loading swing port cooperates with the swing limiting shoulder provided on the support rod.

[0006] Preferably, the inner wall of the support cylinder is provided with a pair of support seats that cooperate with the support shaft. The support seats are also provided with an inner support mechanism that swings with them. The inner side of the inner support mechanism is provided with a rotary drive mechanism that engages with its clutch transmission. The bottom end of the inner support mechanism is used to contact and support the bottom of the sleeve coupling. The outer side of the top end of the inner support mechanism is used to drive the inner wall of the sleeve coupling through rolling friction. The support cylinder is provided with a transmission swing port and a trigger swing port for the inner support mechanism to swing across the support cylinder generatrix.

[0007] Preferably, the inner support mechanism includes an L-shaped support plate with the L-shaped opening facing the outside of the support cylinder. The support plate is provided with a bearing seat connected to the support base via a torsion spring. A connecting shaft connected to the support base is provided at the center of the bearing seat. A clutch platform is provided on the inner side of the inner support mechanism. The inner ring of the clutch platform is conical. The rotary drive mechanism includes a transmission shaft. The bottom end of the transmission shaft is provided with an active friction wheel that cooperates with the clutch platform. A clutch spring that cooperates with the top surface of the clutch platform is provided in the middle of the transmission shaft. A clutch pressure cap is provided on the top of the clutch spring.

[0008] Preferably, the clutch spring is a helical spring and the top radius of the helical spring is smaller than its bottom radius.

[0009] Preferably, the inner support mechanism is provided with an upper support platform and a lower support platform near its top, and at least one transmission roller is provided between the upper support platform and the lower support platform. The clutch platform is provided with a gear set that is connected to the transmission roller. The power input end of the gear set is provided with a conical driven friction wheel, and the driven friction wheel is engaged with the driving friction wheel in a clutch transmission.

[0010] Preferably, the inner side of the support cylinder is provided with an assembly clamping plate, and the assembly clamping plate is provided with a reduction gearbox connected to the drive shaft. The power input end of the reduction gearbox is provided with a motor, and the power output end of the reduction gearbox is provided with a lifting support bushing coaxial with the drive shaft. The drive shaft is provided with a lifting bearing bushing that cooperates with the lifting support bushing and is located above the gear meshing surface of the reduction gearbox.

[0011] Preferably, the two support rods are V-shaped symmetrical with the V-shaped opening facing the unloading swing opening, and the vertical length of the loading swing opening is less than the vertical length of the unloading swing opening.

[0012] Preferably, the swing limiting shoulder is a vertical V-shaped structure with its V-shape facing the unloading swing port.

[0013] Preferably, the suspended conveying mechanism is provided with a discharge guide rod at the position where the sleeve coupling unloads material from the carrier. The discharge guide rod is a multi-segment rod with a "convex" shape in the middle position, facing the position through which the carrier moves.

[0014] Preferably, the top and bottom of the support cylinder are provided with an upper lip and a lower skirt, respectively.

[0015] Compared with the prior art, the advantages and positive effects of the present invention are as follows: 1. The present invention provides a suspended spraying device for sleeve couplings, wherein a carrier adapted to the sleeve coupling is installed at the suspension end of the suspended conveying mechanism, which can effectively support the sleeve coupling and can coordinate with the picking and placing actions of workers and robots through reasonable tilting. At the same time, the sleeve coupling can be sprayed by the spraying equipment in the spray booth by rotating by the rotary drive mechanism and the internal support mechanism, which is beneficial to improving the efficiency of spraying operation. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a front view of the vehicle provided by the present invention; Figure 2 A perspective view of the vehicle provided by the present invention; Figure 3 This is a working diagram of a suspended spraying device for a sleeve coupling according to the present invention; Figure 4 A cross-sectional view of the vehicle provided by the present invention; Figure 5 for Figure 4 Enlarged view of the vehicle at point A; Figure 6 A perspective view of the sleeve coupling on the vehicle; Figure 7 This is a cross-sectional view of the sleeve coupling on the carrier. Figure 8 Exploded view of the internal support mechanism provided by the present invention; Figure 9 This is a working diagram of the carrier provided by the present invention in the loading state; Figure 10 This is a working diagram of the carrier and unloading guide rod provided by the present invention; Figure 11 This is a working diagram of the carrier provided by the present invention in the unloading state; In the above figures: 1. Suspended conveyor mechanism; 2. Spray booth; 3. Hanging rod; 31. Multi-faceted hole; 4. Support rod; 41. Swing limiting shoulder; 5. Support cylinder; 51. Loading swing port; 52. Unloading swing port; 53. Support base; 54. Transmission swing port; 55. Trigger swing port; 56. Assembly clamp; 57. Upper lip; 58. Lower skirt plate; 6. Sleeve coupling; 7. Internal support mechanism; 71. Support plate; 72. Torsion... 73. Spring; 74. Bearing housing; 75. Connecting shaft; 76. Clutch platform; 77. Upper support platform; 78. Lower support platform; 79. Transmission roller; 70. Gear set; 710. Driven friction wheel; 81. Rotary drive mechanism; 82. Transmission shaft; 83. Driving friction wheel; 84. Clutch spring; 85. Clutch cover; 86. Reduction gearbox; 87. Motor; 88. Lifting support bushing; 9. Lifting bearing; 10. Unloading guide rod. Detailed Implementation

[0018] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other. For ease of description, the terms "upper," "lower," "left," and "right" appearing below only indicate that they correspond to the upper, lower, left, and right directions in the accompanying drawings and do not limit the structure.

[0019] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways than those described herein, and therefore the invention is not limited to the specific embodiments disclosed in the following specification.

[0020] Examples, such as Figures 1-11 As shown, the present invention provides a suspended spraying device for sleeve couplings, including a suspended conveying mechanism 1 and a spray booth 2. A carrier is provided at the suspended end of the suspended conveying mechanism 1. The spray booth 2 can be equipped with automatic lifting spraying facilities and manually assisted spray gun facilities, etc. The suspended conveying mechanism 1 carries the carrier and sleeve coupling 6 through the spray booth 2 to achieve suspended spraying. The suspended conveying mechanism 1 is a mature existing technology, and will not be described in detail here. Based on this, the present invention configures the suspended conveyor line in the sleeve coupling 6 spraying workshop, replacing manual handling and spraying.

[0021] To improve the applicability of this device in the sleeve coupling workshop 6, the carrier provided by the present invention includes a lifting rod 3. The top of the lifting rod 3 is provided with a polygonal hole and is connected to the suspension conveying mechanism 1 through a polygonal prism. The bottom of the lifting rod 3 is provided with a pair of support rods 4. The two support rods 4 are symmetrically bent into a U-shape and the ends of the bends are provided with support shafts. A support cylinder 5 is provided between the two support rods 4 and is rotatably connected to the support shafts. The support cylinder 5 has a conical structure and is used to nest and support the sleeve coupling 6. The support cylinder 5 is symmetrically provided with a loading swing port 51 and a unloading swing port 52 for swinging cooperation with the two support rods 4. The vertical length of the loading swing port 51 is less than the vertical length of the unloading swing port 52. The loading swing port 51 cooperates with the swing limiting shoulder 41 provided on the support rod 4. The swing limiting shoulder 41 is used to prevent excessive tilting from causing the sleeve coupling 6 to slip off. Specifically, the boom 3 relies on the non-circular fit structure of the multi-faceted hole and the multi-faceted prism to achieve torque transmission. This allows the boom 3 to move along with the suspension conveyor mechanism 1 while limiting its own circumferential rotation angle, preventing the carrier from twisting and swaying arbitrarily, ensuring the stability of the carrier's posture, and providing a positioning reference for the loading, spraying, and unloading of the sleeve coupling 6. The support cylinder 5 has a conical structure and is used to nest and support the sleeve coupling 6. The conical outer contour can fit the inner hole of the sleeve coupling 6 to achieve initial nesting positioning. The two support rods 4 provide swing support for the support cylinder 5. The support cylinder 5 swings around the support axis and causes the loading swing port 51 to press against the swing limiting shoulder 41. The small end of the support cylinder 5 tilts upward and enters the loading posture. The support cylinder 5 swings in the opposite direction and causes the unloading swing port 52 to press against the bottom of the support rod 4. The small end of the support cylinder 5 tilts downward and enters the unloading posture. The unloading swing port 52 is longer, allowing the support cylinder 5 to swing at a larger angle to the unloading side, leaving space for the sleeve coupling 6 to detach from the carrier. The workshop can be equipped with robotic arms to load and unload materials from the carriers, or it can be done manually. This reduces labor costs for loading and unloading and enables continuous overhead conveying and spraying.

[0022] To improve spraying efficiency, this invention provides an inner support mechanism 7 and a rotary drive mechanism 8 that can be engaged and disengaged, and the engagement and disengagement actions of the two can be matched with the pick-and-place actions of the sleeve coupling 6 workpiece. The inner wall of the support cylinder 5 is provided with a pair of support seats 53 that cooperate with the support shaft. The support seats 53 are also provided with an inner support mechanism 7 that is engaged with it. The inner side of the inner support mechanism 7 is provided with a rotary drive mechanism 8 that is engaged with it. The bottom end of the inner support mechanism 7 is used to contact and support the bottom of the sleeve coupling 6, and the outer side of the top end of the inner support mechanism 7 is used to drive the inner wall of the sleeve coupling 6 through rolling friction. The support cylinder 5 is provided with a transmission swing port 54 and a trigger swing port 55 for the inner support mechanism 7 to swing across the generatrix of the support cylinder 5. The inner support mechanism 7 can make a small radial swing around the axis of the support base 53 and the support plate 71, with a swing amplitude of 5~10°. The transmission swing port 54 and the trigger swing port 55 provide the upper and lower swing space for the inner support mechanism 7, allowing the inner support mechanism 7 to swing over the generatrix of the support cylinder 5 to realize the opening and retraction action. The inner support mechanism 7 undertakes three core functions: First, the bottom end contacts the bottom of the sleeve coupling 6 to realize the axial support of the workpiece; second, the outer side contacts the inner wall of the sleeve coupling 6, and drives the sleeve coupling 6 to rotate by rolling friction, so that the workpiece rotates during spraying, ensuring that all circumferential surfaces of the outer wall of the sleeve coupling 6 can be evenly coated with paint, eliminating spraying dead corners and improving the uniformity of the paint film; third, it can trigger the inner support mechanism 7 to produce a clutch action with the rotary drive mechanism 8.

[0023] To improve the engagement and disengagement performance of the inner support mechanism 7 and the rotary drive mechanism 8, the inner support mechanism 7 provided by the present invention includes an L-shaped support plate 71, with the L-shaped opening of the support plate 71 facing the outside of the support cylinder 5. A bearing seat 73 connected to the support seat 53 via a torsion spring 72 is provided on the support plate 71. A connecting shaft 74 connected to the support seat 53 is provided at the center of the bearing seat 73. A clutch platform 75 is provided on the inner side of the inner support mechanism 7. The inner ring of the clutch platform 75 is conical. The rotary drive mechanism 8 includes a transmission shaft 81. An active friction wheel 82 that engages with the clutch platform 75 is provided at the bottom end of the transmission shaft 81. A clutch spring 83 that engages with the top surface of the clutch platform 75 is provided in the middle of the transmission shaft 81. A clutch pressure cap 84 is provided at the top of the clutch spring 83.

[0024] Specifically, the torsion spring 72 continuously applies an inward preload force F1 to the support plate 71. The preload force F1 is greater than the elastic force F2 of the clutch spring 83. When there is no external force constraining the outside of the support plate 71, the inner support mechanism 7 retracts into the support cylinder 5. At the same time, the conical surface of the clutch platform 75 presses down on the active friction wheel 82 until the active friction wheel 82 and the driven friction wheel 710 are disconnected from the transmission. The clutch cover 84 descends with the transmission shaft 81. The clutch spring 83 is compressed and stores force between the top surface of the clutch platform 75 and the clutch cover 84. After the workpiece is inserted, the sleeve coupling 6 triggers the support plate 71 to swing outward. The center of gravity of the sleeve coupling 6 shifts towards the center of the carrier and automatically corrects itself. The external force F3 on the support plate 71 overcomes the elastic force of the torsion spring 72 and opens outward. The clutch spring 83 extends, allowing the active friction wheel 82 and the driven friction wheel 710 to establish a transmission relationship.

[0025] Furthermore, the inner support mechanism 7 is provided with an upper support platform 76 and a lower support platform 77 near its top. At least one transmission roller 78 is provided between the upper support platform 76 and the lower support platform 77. The clutch platform 75 is equipped with a gear set 79 that is connected to the transmission roller 78. The specific number of gears in the gear set 79 can be designed according to the requirements of the transmission direction and the transmission ratio. The power input end of the gear set 79 is provided with a conical driven friction wheel 710, which engages with the driving friction wheel 82 in a clutch-driven transmission. The driven friction wheel 710 and the driving friction wheel 82 form a friction pair. The output end of the gear set 79 is connected to the transmission roller 78. The clutch platform 75, the upper support platform 76, and the lower support platform 77 are provided with shaft holes and bearings for assembling the gear set 79 and the driven roller to ensure that the power transmission path is: motor → reduction gearbox 85 → transmission shaft 81 → driving friction wheel 82 → driven friction wheel 710 → gear set 79 → transmission roller 78. The drive roller 78 presses directly against the inner wall of the sleeve coupling 6, and drives the sleeve coupling 6 to rotate around its own center by rolling friction. When the sleeve coupling 6 is jammed or overloaded, friction slippage occurs between the driving friction wheel 82 and the driven friction wheel 710, realizing clutch protection and avoiding overload damage to the motor and gear set 79.

[0026] like Figure 4 , Figure 5 and Figure 7As shown, in this invention, the rotary drive mechanism 8 serves as the power source for the rotation of the sleeve coupling 6. Its assembly base is the assembly clamp 56 inside the support cylinder 5. The side of the assembly clamp 56, corresponding to the transmission swing port 54, is also designed with an opening to provide sufficient swing space for the inner support mechanism 7. If the top length of the support plate 71 is reasonably extended, it can cooperate with the opening of the assembly clamp 56 to form a limiting pair to avoid excessive swing. A reduction gearbox 85 connected to the transmission shaft 81 is provided on the assembly clamp 56. A motor 86 is provided at the power input end of the reduction gearbox 85, and a lifting support bushing 87 coaxial with the transmission shaft 81 is provided at the power output end of the reduction gearbox 85. A lifting bearing 88 is provided on the transmission shaft 81, which cooperates with the lifting support bushing 87 and is located above the gear meshing surface of the reduction gearbox 85. The motor 86 can be an integrated motor with a built-in battery, reducing external wiring harnesses. The motor output power is transmitted to the drive shaft 81 after being reduced in speed and increased in torque by the reduction gearbox 85. The mounting clamp 56 is used to fix the reduction gearbox 85, and the lifting support bushing 87 provides lifting guidance for the drive shaft 81. The drive shaft 81 is connected to the final gear in the reduction gearbox 85 by a long key, which establishes a constant connection between the drive shaft 81 and the final gear. The lifting bearing 88 on the drive shaft 81 cooperates with the lifting support bushing 87 to realize the axial floating of the drive shaft 81, and the lower end face of the lifting bearing 88 can be used as the downward limit stop. In this way, the rotary drive mechanism 8 and the inner support mechanism 7 can ensure the reliability of their respective structures before and after disengagement, and can effectively realize friction transmission after power is connected, allowing the sleeve coupling 6 to rotate smoothly.

[0027] To ensure that the clutch plate 75 is effectively constrained within the inner support range of the support cylinder 5 after retraction, so as not to affect the loading and unloading of workpieces, the clutch cover 84 provided by this invention adopts a design that is narrow at the top and wide at the bottom, and the clutch spring 83 is a helical spring with a top radius smaller than its bottom radius. This allows the maximum mechanical outer diameter of the clutch cover 84 to not contact the flipping side wall of the support plate 71 after it descends with the transmission shaft 81, allowing the support plate 71 to complete a sufficient swing range.

[0028] To facilitate material loading, the two support rods 4 provided in this invention are V-shaped symmetrical with the V-shaped opening facing the unloading swing port 52. The overall arrangement is V-shaped symmetrical, and the support cylinder 5 can swing and tilt around the support axis at a certain angle. The support cylinder 5 can rotate around the support axis to tilt and straighten its position, reducing the interference of the support rods 4 on the workers. Moreover, after vertical positioning for spraying, the sleeve coupling 6 workpiece and the spraying facilities of the spray booth 2 have a very wide open space, which is beneficial to the spraying operation.

[0029] To improve the practicality of the swing limiting shoulder 41, the present invention provides a vertical V-shaped structure with the V-shaped orientation facing the unloading swing port 52. The top edge of the V-shaped surface can effectively support the loading swing port 51, which has a smaller opening length, allowing the support cylinder 5 to obtain a reasonable loading posture. Moreover, it can automatically straighten itself under its own weight after loading. During the movement of the sleeve coupling 6 with the carrier, the inner ring of the sleeve coupling 6, especially its bottom, plays a role in closing the loading swing port 51 and the unloading swing port 52 of the support cylinder 5. Throughout the process, the center of gravity remains in the center position of the carrier, and the carrier will not automatically detach from the two support rods 4 unless forcibly interfered by external force.

[0030] To facilitate automatic unloading, the suspended conveying mechanism 1 provided by the present invention is provided with an unloading guide rod 9 at the position where the sleeve coupling 6 unloads from the carrier. The unloading guide rod 9 is a multi-segment rod with a "convex" shape in the middle position facing the position through which the carrier moves. The guiding function of the unloading guide rod 9 can allow the support cylinder 5 to enter the unloading posture in advance, which is convenient for the robot or worker to perform the unloading operation from the outside of the carrier, such as forcibly tilting the carrier together with the support sleeve for unloading.

[0031] To improve the practicality of the support cylinder 5, the support cylinder 5 provided by the present invention is provided with an upper lip 57 and a lower skirt 58 at its top and bottom, respectively. The upper lip 57 provides a smooth guide for the feeding of the sleeve coupling 6 and facilitates manual adjustment of the angle of the support cylinder 5; the lower skirt supports the sleeve coupling 6, and after the sleeve coupling 6 contacts the support plate 71, it triggers the inner support mechanism 7 to straighten it. The lower skirt 58 cooperates with the support plate 71 to provide comprehensive support for the rotation path of the sleeve coupling 6, which helps to improve the stability of the rotation of the sleeve coupling 6.

[0032] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A suspended spraying device for a sleeve coupling, comprising a suspended conveying mechanism and a spray booth, wherein a carrier is provided at the suspended end of the suspended conveying mechanism, characterized in that, The carrier includes a boom with a polygonal hole at its top and connected to a suspension conveying mechanism via a polygonal prism. A pair of support rods are provided at the bottom of the boom, the two support rods being symmetrically bent into a U-shape with a support shaft at the end of the bend. A support cylinder is provided between the two support rods and is rotatably connected to the support shaft. The support cylinder has a conical structure and is used to nest a bearing sleeve coupling. The support cylinder is symmetrically provided with a loading swing port and a unloading swing port for swinging cooperation with the two support rods. The loading swing port cooperates with the swing limiting shoulder provided on the support rod.

2. The suspended spraying device for a sleeve coupling according to claim 1, characterized in that, The inner wall of the support cylinder is provided with a pair of support seats that cooperate with the support shaft. The support seats are also provided with an inner support mechanism that swings with them. The inner side of the inner support mechanism is provided with a rotary drive mechanism that engages with its clutch transmission. The bottom end of the inner support mechanism is used to contact and support the bottom of the sleeve coupling. The outer side of the top end of the inner support mechanism is used to drive the inner wall of the sleeve coupling through rolling friction. The support cylinder is provided with a transmission swing port and a trigger swing port for the inner support mechanism to swing across the support cylinder generatrix.

3. The suspended spraying device for a sleeve coupling according to claim 2, characterized in that, The inner support mechanism includes an L-shaped support plate with the L-shaped opening facing the outside of the support cylinder. The support plate is provided with a bearing seat connected to the support base via a torsion spring. The center of the bearing seat is provided with a connecting shaft connected to the support base. The inner side of the inner support mechanism is provided with a clutch platform with a conical inner ring. The rotary drive mechanism includes a transmission shaft with a driving friction wheel that mates with the clutch platform at the bottom end. The transmission shaft is provided with a clutch spring that mates with the top surface of the clutch platform in the middle, and a clutch pressure cap is provided on the top of the clutch spring.

4. The suspended spraying device for a sleeve coupling according to claim 3, characterized in that, The clutch spring is a helical spring, and the top radius of the helical spring is smaller than its bottom radius.

5. The suspended spraying device for a sleeve coupling according to claim 3, characterized in that, The internal support mechanism has an upper support platform and a lower support platform near its top. At least one transmission roller is provided between the upper support platform and the lower support platform. The clutch platform has a gear set inside that is connected to the transmission roller. The power input end of the gear set is provided with a conical driven friction wheel. The driven friction wheel and the driving friction wheel are engaged in a clutch transmission.

6. The suspended spraying device for a sleeve coupling according to claim 3, characterized in that, An assembly clamp is provided on the inner side of the support cylinder. A reduction gearbox connected to the drive shaft is provided on the assembly clamp. A motor is provided at the power input end of the reduction gearbox. A lifting support bushing coaxial with the drive shaft is provided at the power output end of the reduction gearbox. A lifting bearing is provided on the drive shaft, which cooperates with the lifting support bushing and is located above the gear meshing surface of the reduction gearbox.

7. The suspended spraying device for a sleeve coupling according to claim 1, characterized in that, The two support rods are V-shaped and symmetrical, with the V-shaped opening facing the unloading swing opening. The vertical length of the loading swing opening is less than the vertical length of the unloading swing opening.

8. The suspended spraying device for a sleeve coupling according to claim 1, characterized in that, The swing limiting shoulder is a vertical V-shaped structure with its V-shape facing the unloading swing port.

9. The suspended spraying device for a sleeve coupling according to claim 1, characterized in that, The suspended conveying mechanism is equipped with a discharge guide rod at the position where the sleeve coupling unloads material from the carrier. The discharge guide rod is a multi-segment rod with a "convex" shape in the middle, facing the position through which the carrier moves.

10. The suspended spraying device for a sleeve coupling according to claim 1, characterized in that, The top and bottom of the support cylinder are respectively provided with an upper lip and a lower skirt.

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