An electrically controlled rotary joint and an automatic remote-controlled universal rotary spray gun

Abstract

This utility model discloses an electrically controlled rotary joint and an automatic remote-controlled universal rotary spray gun. The electrically controlled rotary joint consists of a stator housing, a rotor core, and connecting flanges at both ends. The rotary drive mechanism uses a control motor to drive a worm gear and a worm. A worm is located inside the stator housing, with bearings installed at both ends. One end of the worm is connected to the output shaft of the control motor, and the other end has a manual crank connection port. The control motor is fixedly installed on one side of the stator housing. A worm gear is located on the outer edge of the rotor core, which is housed within the stator housing via bearings on both sides and a sealing ring. The worm gear and the worm are connected for transmission. The automatic remote-controlled universal rotary spray gun consists of two electrically controlled rotary joints connected to a nozzle via a bend pipe. This utility model enables remote electric / automatic control of the spray gun's horizontal rotation angle and spraying height, improving the automation level of spraying operations and reducing the labor intensity of workers.

Description

Technical Field

[0001] This utility model relates to a rotary joint and a spray gun, and more particularly to an electrically controlled rotary joint and an automatic remote-controlled universal rotary spray gun. Background Technology

[0002] In the repair of steep slopes, hydroseeding machines are usually used. Previously, the spray guns used on hydroseeding machines were mostly hand-held by operators. Due to the high spraying pressure, they were difficult to control, resulting in high labor intensity for workers. They were also prone to getting stuck and causing injuries when rotating the gun. It was laborious and unsafe.

[0003] To ensure production safety and reduce worker fatigue, the applicant previously filed a utility model patent for a "Rotary Joint and Universal Rotary Spray Gun," patent publication number: CN202432156U. This universal rotary spray gun can rotate at any angle in both horizontal and vertical planes, enabling spraying at various angles within a 360-degree spatial range. It is easy to operate and use, significantly reducing worker fatigue.

[0004] However, the drawback of this omnidirectional rotary spray gun is that it still requires manual operation, resulting in a large workload for workers and a low degree of automation. Utility Model Content

[0005] This invention addresses the shortcomings of existing technologies by proposing an automatic remote-controlled universal rotary spray gun based on a novel electrically controlled rotary joint. It enables remote electric / automatic control of the spray gun's horizontal rotation angle and spraying height / elevation angle, improving the automation level of spraying operations and reducing the labor intensity of workers.

[0006] The technical solution adopted in this utility model is as follows:

[0007] Design an electrically controlled rotary joint, consisting of a stator housing (1), a rotor core (2), and connecting flanges at both ends. The rotary drive mechanism uses a control motor (3) to drive a worm gear and a worm. A worm (4) is provided inside the stator housing (1), with bearings installed at both ends of the worm. One end of the worm (4) is connected to the output shaft of the control motor (3), and the other end of the worm (4) is provided with a manual crank connection port. The control motor (3) is fixedly installed on one side of the stator housing (1). A worm gear (5) is provided on the outer edge of the rotor core (2). The rotor core (2) is set inside the stator housing (1) through bearings on both sides and a sealing ring. The worm gear (5) and the worm (4) are connected for transmission.

[0008] One end of the worm (4) is connected to the control motor drive, and the other end extends out of the stator housing (1). The end of the extended end is provided with a crank interface (11), and a manual crank (12) is provided in conjunction with the crank interface (11).

[0009] The electrically controlled rotary joint has a stator end flange (6) at one end of the stator housing (1) perpendicular to the worm gear. One end of the rotor core (2) is connected to the material inlet end of the stator housing (1) through a bearing (7) and a sealing ring (8) to form a rolling seal connection. The inner side of the other end of the rotor core (2) is connected to the stator housing (1) through a bearing (7) and fixed to the stator housing (1) through a bearing seat. The other end of the rotor core (2) is provided with a rotor end flange (9). The control motor drives the worm gear to rotate the rotor core (2) relative to the stator housing (1) through the worm wheel.

[0010] The electrically controlled rotary joint, wherein the rotor inner core (2) is provided with a rotor end flange (9) at one end and the stator housing (1) of the rotary joint is connected by a half-moon bearing (or a regular bearing).

[0011] The electrically controlled rotary joint has an oil cup (13) connected to its inner cavity on the stator housing (1) to facilitate the addition of lubricating oil.

[0012] Additionally, an automatic remote-controlled omnidirectional rotary spray gun is designed, consisting of two electrically controlled rotary joints connected by a bend pipe. The stator flange of the first electrically controlled rotary joint is connected to the equipment's discharge pipe, achieving horizontal rotation when installed vertically. The rotor flange of the first electrically controlled rotary joint is connected to the second electrically controlled rotary joint via a material conveying bend pipe. The second electrically controlled rotary joint is installed horizontally, achieving vertical rotation. The rotor flange of the second electrically controlled rotary joint is connected to the nozzle via a spray bend pipe. Each of the two rotary joints is equipped with a forward and reverse rotation control circuit in conjunction with its control motor. The input of each control circuit is connected to a power supply, and the output is connected to the control motor. A remote control device is also provided to complement the control circuit.

[0013] The automatic remote-controlled omnidirectional rotating spray gun has its forward and reverse control circuit located in the power distribution cabinet. It uses a 24V power supply connected to the power supply terminal of the remote control receiver board in the power distribution cabinet. The power supply is also connected to the control motors of the two rotary joints. The communication output port of the remote control receiver board is also connected to the control motors of the two rotary joints. The control motors are servo motors.

[0014] The automatic remote-controlled omnidirectional rotary spray gun has a quick-change connector installed at the outlet end of the spray bend that is connected to the rotor end flange of the second electrically controlled rotary joint for installing different nozzles.

[0015] Beneficial effects of the utility model:

[0016] This utility model relates to an electrically controlled rotary joint and an automatic remote-controlled universal rotary spray gun. Two control motors drive a worm gear and worm shaft to achieve rotation of the two joints in the horizontal and vertical planes respectively. Electrical control adjusts the spray amplitude / horizontal angle and height (elevation angle), automating the spraying operation and saving manpower, thus reducing worker fatigue. The electric / automatic control method replaces the traditional universal spray guns that mostly require manual operation, making operation convenient and controllable. It avoids injuries caused by improper operation or equipment malfunction, improves spraying efficiency, and reduces material waste. Attached Figure Description

[0017] Figure 1 The diagram shown is a schematic of the overall structure of the automatic remote-controlled universal rotating spray gun of this utility model.

[0018] Figure 2 The figure shown is a three-dimensional structural diagram of the electrically controlled rotary joint of this utility model;

[0019] Figure 2-1 Figures 2-2 and 2-3 show respectively... Figure 2 Front view structural diagram, left view structural diagram, and right view structural diagram;

[0020] Figure 2-4 As shown Figure 2-1 Schematic diagram of the sectional structure of the middle AA section;

[0021] Figure 2-5 As shown Figure 2-3 Schematic diagram of the cross-sectional structure of the middle BB;

[0022] Figure 2-6 The diagram shown is a schematic of the manual crank mechanism.

[0023] Figure 3 The diagram shown is the power supply circuit diagram for the automatic remote-controlled universal rotating spray gun of this utility model.

[0024] Figure 3-1 The diagram shows the structure of the remote control box for the omnidirectional rotating spray gun.

[0025] Figure 3-2 The diagram shows the wiring diagram of the omnidirectional rotating spray gun control circuit / remote control receiver and drive motor. Detailed Implementation

[0026] To make the technical concept and advantages of the invention clearer, the technical solution of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the following embodiments are merely preferred embodiments for explaining and illustrating this utility model, and should not be considered as, nor constitute a limitation on, the scope of patent protection claimed for this utility model.

[0027] Example 1

[0028] See Figure 2 , Figure 2-1 to Figure 2-6 This utility model relates to an electrically controlled rotary joint, comprising a stator housing 1, a rotor core 2, and connecting flanges at both ends. The rotary drive mechanism uses a control motor 3 to drive a worm gear and a worm. A worm 4 is provided inside the stator housing 1, and bearings 7 are installed at both ends of the worm 4. One end of the worm 4 is connected to the output shaft of the control motor 3, and the other end of the worm 4 is provided with a manual crank connection port (the stator housing 1 is fixed to the other side of the control motor). The control motor 3 is fixedly installed on one side of the stator housing 1. A worm wheel 5 is provided on the outer edge of the rotor core 2. The rotor core 2 is set inside the stator housing 1 through bearings 7 on both sides and sealing rings 8. The worm wheel 5 and the worm 4 are connected for transmission.

[0029] One end of the worm gear 4 is connected to the control motor drive, and the other end extends out of the stator housing 1. The end of this extended end is provided with a crank handle interface 11, and a manual crank handle 12 is provided in conjunction with the crank handle interface 11. Manual operation of the rotary joint can be achieved by connecting the manual crank handle to the crank handle interface. Reference numeral 14 in the figure represents a sealing ring.

[0030] Example 2

[0031] The difference between the electrically controlled rotary joint in this embodiment and that in embodiment 1 is that: the stator housing 1 is further defined with a stator end flange 6 at one end perpendicular to the worm gear; one end of the rotor core 2 is connected to the material inlet end of the stator housing 1 by a bearing 7 and a sealing ring 8 to form a rolling seal; the inner side of the other end of the rotor core 2 is connected to the stator housing 1 by a bearing 7 and fixed to the stator housing 1 by a bearing seat; the other end of the rotor core 2 is provided with a rotor end flange 9; and the control motor drives the worm gear to rotate the rotor core 2 relative to the stator housing 1 via the worm wheel.

[0032] For ease of maintenance, the electrically controlled rotary joint has a semi-circular bearing connecting one end of the rotor core 2 (where the rotor end flange 9 is located) to the stator housing 1 of the rotary joint. The semi-circular bearing facilitates disassembly and assembly. An oil cup 13 is provided on the stator housing 1, communicating with its inner cavity, for convenient lubrication.

[0033] Example 3

[0034] This embodiment describes the implementation of an automatic remote-controlled omnidirectional rotating spray gun. See [link to previous document]. Figure 1 , Figure 3 as well as Figure 3-1 and Figure 3-2This utility model relates to an automatic remote-controlled omnidirectional rotary spray gun, which consists of two electrically controlled rotary joints as described in Embodiment 1 or Embodiment 2, connected by a bend pipe. The stator flange of the first electrically controlled rotary joint 20 is connected to the equipment discharge pipe, and is vertically installed to achieve horizontal plane angle rotation. The rotor flange of the first electrically controlled rotary joint 20 is connected to the second electrically controlled rotary joint 22 through a material conveying bend pipe 21. The second electrically controlled rotary joint 22 is horizontally installed to achieve vertical plane angle rotation. The rotor flange of the second electrically controlled rotary joint 22 is connected to the nozzle 25 through a spray bend pipe 23. Each of the two rotary joints is equipped with a forward and reverse rotation control circuit in conjunction with its control motor. The input end of the forward and reverse rotation control circuit is connected to a power supply, and the output end is connected to the control motor. A remote control device is also provided in conjunction with the control circuit.

[0035] like Figure 3 As shown, the forward and reverse control circuit is located in the power distribution cabinet. It uses a 24V power supply connected to the power supply terminal of the remote control receiver board in the power distribution cabinet. The power supply is also connected to the control motors of the two rotary joints. The communication output port of the remote control receiver board is also connected to the control motors of the two rotary joints. The control motors are servo motors.

[0036] The power distribution cabinet is installed next to the equipment, and the equipment is controlled by a remote control. The remote control can operate the automatic remote-controlled omnidirectional rotary spray gun within a 100-meter range in open areas. Two control motors drive worm gears to achieve rotation of two rotary joints in the horizontal and vertical planes respectively, adjusting the spray angle and height (elevation angle). Operating parameters can also be set or modified on the remote control panel.

[0037] The automatic remote-controlled omnidirectional rotary spray gun has a quick-change connector 24 installed at the outlet end of the spray bend 23, which is connected to the rotor end flange of the second electrically controlled rotary joint 22, for installing different nozzles.

[0038] When using this invention, the universal spray gun is installed at the discharge port on the top of the tank (or on the ramper). After the material is well mixed, the spray gun is positioned on the spraying slope using the remote control. The main engine is then started, and the pump is activated using the clutch to perform the spraying operation. The operator holds the remote control and moves the joystick to rotate the spray gun, adjusting the landing point of the sprayed material to the desired spraying position. The operator then pushes the one-button spraying button to start automatic spraying. The swing amplitude knob is used to set the left and right swing amplitude, and the movement speed knob is used to set the up and down movement speed. Once set, automatic spraying can begin. After spraying at the current position, there is no need to stop the automatic spraying. The operator can directly operate the joystick to move the material landing point to the new spraying position for a new spraying operation.

[0039] The rotary joint uses a worm gear mechanism and is driven by a control motor. Various functions are operated via the remote control's joystick. Through program settings, the remote control can perform the following operations: omnidirectional rotation via the joystick; single-directional rotation (left / right and up / down) via the toggle switch; automatic spraying via one-button spraying (both left / right swing amplitude and up / down movement speed can be manually adjusted); and motion-sensing mode (using a gyroscope and other components) to simulate handheld spraying with a universal spray gun. The motion-sensing mode has a dedicated jog button on the front of the remote control; motion-sensing control is only possible when the button is pressed with one hand, thus preventing accidents due to misoperation. An angle limit is also included, allowing adjustment of the angle and position on the remote control. A midpoint can be set at a specific location, and up / down / left / right sensing operations can be performed from this midpoint. The angle limit is designed to prevent excessive movement and potential hazards. This allows for remote operation from any position, preventing injuries caused by obstructed rotation due to nozzle blockage. The flange connection allows for replacement of only the worn section, rather than replacing the entire machine, after some parts wear out.

Claims

1. An electrically controlled rotary joint, comprising a stator housing (1), a rotor core (2), and connecting flanges at both ends, characterized in that: The rotary drive mechanism uses a control motor (3) to drive the worm wheel and worm. A worm (4) is provided inside the stator housing (1). Bearings are installed at both ends of the worm. One end of the worm (4) is connected to the output shaft of the control motor (3), and the other end of the worm (4) is provided with a manual crank connection port. The control motor (3) is fixedly installed on one side of the stator housing (1). A worm wheel (5) is provided on the outer edge of the rotor core (2). The rotor core (2) is set inside the stator housing (1) through bearings on both sides and sealing rings. The worm wheel (5) and the worm (4) are connected for transmission.

2. The electrically controlled rotary joint according to claim 1, characterized in that: One end of the worm (4) is connected to the control motor for transmission, and the other end extends out of the stator housing (1). The end of the extended end is provided with a crank handle interface (11), and a manual crank handle (12) is provided in conjunction with the crank handle interface (11).

3. The electrically controlled rotary joint according to claim 1 or 2, characterized in that: The stator housing (1) is provided with a stator end flange (6) at one end perpendicular to the worm. One end of the rotor core (2) is connected to the material inlet end of the stator housing (1) through a bearing (7) and a sealing ring (8) to form a rolling seal connection. The inner side of the other end of the rotor core (2) is connected to the stator housing (1) through a bearing (7) and fixed to the stator housing (1) through a bearing seat. The other end of the rotor core (2) is provided with a rotor end flange (9). The control motor drives the worm to rotate the rotor core (2) relative to the stator housing (1) through the worm wheel.

4. The electrically controlled rotary joint according to claim 3, characterized in that: The rotor core (2) is provided with a rotor end flange (9) at one end, and the connecting bearing of the stator housing (1) of the rotary joint uses a half-moon bearing.

5. The electrically controlled rotary joint according to claim 1, 2 or 4, characterized in that: The stator housing (1) is provided with an oil cup (13) connected to its inner cavity to facilitate the addition of lubricating oil.

6. An automatic remote-controlled omnidirectional rotating spray gun, characterized in that: It consists of two electrically controlled rotary joints as described in claim 1, connected by a bend in the pipe. The stator flange of the first electrically controlled rotary joint is connected to the discharge pipe of the equipment, and it is vertically installed to achieve horizontal angular rotation. The rotor flange of the first electrically controlled rotary joint is connected to the second electrically controlled rotary joint through a conveying bend in the pipe. The second electrically controlled rotary joint is horizontally installed to achieve vertical angular rotation. The rotor flange of the second electrically controlled rotary joint is connected to the nozzle through a spray bend in the pipe. Each of the two rotary joints is equipped with a forward and reverse rotation control circuit in cooperation with the control motor. The input end of the forward and reverse rotation control circuit is connected to the power supply, and the output end is connected to the control motor. A remote control device is also provided in conjunction with the control circuit.

7. The automatic remote-controlled omnidirectional rotating spray gun according to claim 6, characterized in that: The forward and reverse control circuit is located inside the power distribution cabinet. It uses a 24V power supply connected to the power supply terminal of the remote control receiver board inside the power distribution cabinet. The power supply is also connected to the control motors of the two rotary joints. The communication output port of the remote control receiver board is also connected to the control motors of the two rotary joints. The control motors are servo motors.

8. The automatic remote-controlled omnidirectional rotating spray gun according to claim 6 or 7, characterized in that: The outlet end of the spray bend, which is connected to the rotor end flange of the second electrically controlled rotary joint, is equipped with a quick-change connector for installing different nozzles.

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