Long nozzle operating device

Abstract

The utility model relates to a long nozzle operating device, and belongs to the technical field of continuous casting in the steel industry. Comprising a base, a rotation unit, a hydraulic cylinder, an operation arm unit and a long nozzle, and further comprises a remote operation unit electrically connected with the rotation unit, the hydraulic cylinder and the operation arm unit. Wherein the rotary unit comprises a first rotary bearing, a first support, a second rotary bearing, an eccentric support arranged on the second rotary bearing, a first driving motor arranged on the first rotary bearing and a second driving motor arranged on the second rotary bearing; the operation arm unit comprises an operation arm, a second support, a retainer and a third driving motor arranged on the retainer, wherein the operation arm, the second support and the retainer are sequentially arranged. The rotation unit, the hydraulic cylinder and the operation arm unit are remotely controlled through the remote operation unit, rotation and lifting of an operation arm are achieved, and safety of manual operation is guaranteed; the stress form of the device is changed by arranging the eccentric support, and the durability of the device is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of continuous casting in the steel industry and relates to a long shroud operating device. Background Art

[0002] During the production process of the continuous casting machine, a long shroud, also called a protective pipe, is provided between the molten steel tank and the intermediate tank. The molten steel in the molten steel tank is injected into the intermediate tank through the long shroud to achieve protective pouring, so that the molten steel is not subjected to secondary oxidation, the steel flow is prevented from splashing, and accidents such as cracking and breaking are avoided during pouring. The shroud operation device is now equipped, and the shroud operation device must be used to operate the shroud on site every time the molten steel tank is replaced.

[0003] The current shroud operating device is operated manually on-site, and can realize functions such as rotation, forward and backward movement, rotation, lifting, and compaction of the operating arm. For example, the shroud operating arm is manually pushed to rotate and move forward and backward, and the operating arm is rotated, lifted, and compacted by manually rotating the handle, and the hydraulic cylinder is driven by manual on-site operation. Since the continuous casting machine needs to work continuously for a long time, the molten steel tank needs to be replaced about every 40 minutes. At the same time, the temperature of the device and the environment during the production process of the continuous casting machine is very high, and the operations required are relatively frequent. The on-site working environment is very harsh, and there are great safety risks when performing manual on-site operations.

[0004] In addition, the current long water outlet operating device adopts a rotating form to realize the forward and backward movement and rotation of the operating arm, mainly by setting a rotating arm that rotates horizontally around the base of the device to drive the operating arm to rotate and move forward and backward. One end of the rotating arm is connected to the base, and the other end is connected to the operating arm. The rotating arm is a cantilever structure, and only the cantilever end far away from the base supports the weight and deadweight of the upper operating arm. The stress condition is poor and it is very easy to deform or even break.

[0005] Based on the above problems, it is urgent to propose a long shroud operating device to improve the safety of manual on-site operation, improve the stress state of the long shroud operating device, and improve the durability of the device. Utility Model Content

[0006] In view of this, the purpose of the utility model is to provide a long shroud operating device, which can realize manual remote operation, improve the safety of manual on-site operation, improve the force form of the device, and improve the durability of the device.

[0007] In order to achieve the above object, the utility model provides the following technical solutions:

[0008] A long shroud operating device, comprising a base and a swivel unit arranged on the base, the swivel unit pivots around its own axis; an operating arm unit is arranged at one end of the swivel unit away from the base, the swivel unit and the operating arm unit are connected through a hydraulic cylinder, and the hydraulic cylinder drives the operating arm unit to move in a direction close to or away from the swivel unit; the operating arm unit is arranged horizontally, and one end of the operating arm unit away from the hydraulic cylinder is connected to the long shroud; and further comprising a remote operating unit electrically connected to the swivel unit and the hydraulic cylinder, the remote operating unit controls the swivel unit to pivot around its own axis, and controls the hydraulic cylinder to drive the operating arm unit to move in a direction close to or away from the swivel unit;

[0009] The rotary unit includes an eccentric support, which includes a fixed section and an eccentric section connected to each other, and the axis center line distance between the fixed section and the eccentric section is L; the fixed section is coaxially arranged at one end of the rotary unit close to the hydraulic cylinder, and the eccentric section is coaxially arranged at one end of the hydraulic cylinder close to the rotary unit. Wherein, the distance L>0.

[0010] The remote control unit controls the slewing unit to drive the operating arm unit to slew, and controls the hydraulic cylinder to drive the operating arm unit to lift and lower, so as to achieve precise docking between the long water inlet at one end of the operating arm unit and the molten steel tank. Through the eccentric support, the slewing unit can drive the hydraulic cylinder and the operating arm unit to achieve horizontal displacement when it rotates.

[0011] Optionally, the slewing unit further comprises a first slewing bearing, a first support, and a second slewing bearing which are sequentially arranged from the base toward the hydraulic cylinder, and the first slewing bearing, the first support, and the second slewing bearing are coaxially arranged; the first slewing bearing is arranged on the base; the eccentric support is arranged at one end of the second slewing bearing close to the hydraulic cylinder. The second slewing bearing rotates, driving the eccentric support arranged on the second slewing bearing to rotate, thereby adjusting the distance between the long water outlet on one side of the operating arm unit and the molten steel tank.

[0012] Optionally, a first driving motor is provided on the first slewing bearing, and the first driving motor controls the first slewing bearing to rotate around its own axis; the first driving motor is electrically connected to the remote operation unit.

[0013] Optionally, a second drive motor is provided on the second slewing bearing, and the second drive motor controls the second slewing bearing to rotate around its own axis; the second drive motor is electrically connected to the remote operation unit.

[0014] Optionally, the operating arm unit comprises a retainer, a second support and an operating arm arranged in sequence from the hydraulic cylinder to the long shroud, the retainer, the second support and the operating arm are coaxially arranged; the long shroud is connected to an end of the operating arm away from the second support. The operating arm rotates around its axis, and the rotation angle of the operating arm is fixed by the retainer.

[0015] Optionally, the operating arm is rotatably connected to the second support, and the operating arm can rotate around its own axis.

[0016] Optionally, a third drive motor is provided on the retainer to drive the operating arm to rotate around its own axis; the third drive motor is electrically connected to the remote operating unit. The operating arm rotates around its axis to avoid the molten steel tank at one end of the long nozzle, making it convenient to clean and purge the long nozzle.

[0017] Optionally, the retainer is a worm gear reducer.

[0018] Optionally, the hydraulic cylinder is a lifting drive hydraulic cylinder.

[0019] Optionally, the remote operation unit is a hand operator.

[0020] The beneficial effects of the utility model are:

[0021] (1) The long shroud operating device of the utility model can realize manual remote operation, reducing the safety risks when manually replacing the molten steel tank.

[0022] (2) The device improves the structural form of the slewing unit, replaces the cantilever slewing boom mechanism with an eccentric support, and optimizes the force-bearing structure of the device from a cantilever form with unilateral force to a more stable eccentric compression form, thereby improving the structural safety and durability.

[0023] (3) This device realizes the precise docking installation of the long water nozzle and the molten steel tank through the first and second rotary bearings; and cooperates with the hydraulic cylinder that can realize the lifting function to press the long water nozzle and the molten steel tank tightly. After pressing, the long water nozzle can move with the molten steel tank within a certain range, which has a positive effect in preventing the backflow of molten steel, maintaining the temperature of molten steel, improving the purity of molten steel, extending the service life and improving production efficiency.

[0024] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and research, or can be taught from the practice of the present invention to some extent. The objectives and other advantages of the present invention can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be described in detail below in conjunction with the accompanying drawings, in which:

[0026] Figure 1 This is the front view of the shroud operating device;

[0027] Figure 2 This is a top view of the shroud operating device;

[0028] Figure 3 This is a schematic diagram of the operation panel of the remote operation unit.

[0029] Reference numerals:

[0030] 1 base, 2 slewing unit, 21 first drive motor, 22 first slewing bearing, 23 first support, 24 second drive motor, 25 second slewing bearing, 26 eccentric support, 261 fixed section, 262 eccentric section, 3 hydraulic cylinder, 4 operating arm unit, 41 operating arm, 42 second support, 43 retainer, 44 third drive motor, 5 long water outlet, 6 remote operation unit. DETAILED DESCRIPTION

[0031] The following describes the implementation of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner. The following embodiments and the features in the embodiments can be combined with each other without conflict.

[0032] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present utility model. In order to better illustrate the embodiments of the present utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0033] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "back" and the like indicate directions or positional relationships, they are based on the directions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0034] See also Figure 1-2 , is a long shroud operating device, comprising a base 1 and a slewing unit 2 arranged on the base 1, a hydraulic cylinder 3 is arranged above the slewing unit 2, and one end of the hydraulic cylinder 3 away from the slewing unit 2 is connected to an operating arm unit 4; the operating arm unit 4 is arranged horizontally, one end of which is connected to the hydraulic cylinder 3, and the other end is connected to the long shroud 5. The slewing unit 2 rotates in the horizontal direction, which can realize the rotation of the operating arm unit 4 in the horizontal direction with the axis of the hydraulic cylinder 3 as the rotation axis; in some embodiments of the utility model, the hydraulic cylinder 3 is a lifting drive hydraulic cylinder, which can realize the lifting and lowering action of the operating arm unit 4 in the vertical direction.

[0035] The shroud operating device of the present invention further includes a remote operating unit 6 electrically connected to the rotary unit 2, the hydraulic cylinder 3, and the operating arm unit 4, respectively, for controlling the rotation of the rotary unit 2, the lifting of the hydraulic cylinder 3, and the rotation of the operating arm unit 4. In some embodiments of the present invention, the remote operating unit 6 is a hand operator.

[0036] The slewing unit 2 includes a first slewing bearing 22, a first support 23, a second slewing bearing 25 and an eccentric support 26 which are sequentially connected from the base 1 to the hydraulic cylinder 3. The first slewing bearing 22, the first support 23 and the second slewing bearing 25 are coaxially arranged; the eccentric support 26 includes a fixed section 261 and an eccentric section 262 which are connected to each other. The axial centerline distance L (L>0) between the fixed section 261 and the eccentric section 262 is; the fixed section 261 is connected to the second slewing bearing 25 and is coaxially arranged with the second slewing bearing 25; the eccentric section 262 is connected to the hydraulic cylinder 3 and is coaxially arranged with the hydraulic cylinder 3.

[0037] As the second slewing bearing 25 rotates, the position of the eccentric section 262 of the eccentric support 26 in the horizontal direction will also change accordingly, thereby driving the hydraulic cylinder 3 and the operating arm unit 4 to shift in the horizontal direction. The first slewing bearing 22 is provided with a first drive motor 21, which drives and controls the first slewing bearing 22 to realize horizontal rotation; the second slewing bearing 25 is connected with a second drive motor 24, which drives and controls the second slewing bearing 25 to realize horizontal rotation. In some embodiments of the utility model, the first drive motor 21 and the second drive motor 24 are both slewing drive gear motors, and the two can operate simultaneously to adjust the position of the operating arm 41 and fine-tune the distance between the long water nozzle 5 on the operating arm 41 and the molten steel tank; the long water nozzle 5 is installed at the bottom of the molten steel tank and is pressed against the molten steel tank.

[0038] The operating arm unit 4 includes an operating arm 41 and a second support 42 which are connected in sequence from the long water outlet 5 to the hydraulic cylinder 3. The operating arm 41 is coaxially connected to the second support 42, and the second support 42 is fixedly arranged on the hydraulic cylinder 3. A retainer 43 is arranged at the end of the second support 42 away from the operating arm 41, and a third drive motor 44 is arranged on the retainer 43; the operating arm 41 is driven and controlled by the third drive motor 44 to rotate around its own axis to avoid the molten steel tank at one end of the long water outlet 5, so as to facilitate the cleaning and purging of the long water outlet 5; after the operating arm 41 rotates to a predetermined position, the position of the operating arm 41 is fixedly maintained by the retainer 43. In some embodiments of the utility model, the retainer 43 is a worm gear reducer.

[0039] The position where the operating arm 41 rotates to align with the long shroud 5 is called the working position, and the position where the operating arm 41 rotates to avoid the long shroud 5 is called the storage position.

[0040] The hand operator is provided with an operation panel, and the horizontal rotation, lifting and lowering, and axial rotation of the operating arm 41 can be controlled by buttons on the operation panel.

[0041] See Figure 3 , there are buttons on the operation panel ④, ⑤, ⑥, and knobs ①, ②, ③, buttons It is the main switch, which controls the opening and closing of the hand operator, as well as the power-on and power-off states of the first drive motor 21, the second drive motor 24, and the third drive motor 44 through electrical signals; button ④ is the rising key of the operating arm 41. By pressing and holding the key, the internal operation of the hydraulic cylinder 3 is controlled through electrical signals, thereby driving the operating arm 41 to rise; button ⑤ is the descending key of the operating arm 41. By pressing and holding the key, the internal operation of the hydraulic cylinder 3 is controlled through electrical signals, thereby driving the operating arm 41 to descend; button ⑥ is the long water nozzle 5 pressing key, which moves the long water nozzle 5 on the operating arm 41 toward one side of the molten steel tank until the molten steel tank is pressed. After pressing, the long water nozzle 5 can move with the molten steel tank within a certain range.

[0042] Among them, the pressing action of the long shroud 5 on the molten steel tank is achieved by controlling the lifting and lowering of the hydraulic cylinder 3. An overflow valve is arranged in the hydraulic cylinder 3. The hydraulic pressure is adjusted by the overflow valve to press the long shroud 5 and the molten steel tank. The method mainly includes the following steps: first, according to the pressing requirements of the long shroud 5 and the molten steel tank, the pressure setting of the overflow valve is adjusted. The pressure should be able to ensure the successful pressing operation without causing excessive pressure on the system. In some embodiments of the utility model, the pressure is set to 2-5Mpa; then, the hydraulic pump is started to make the hydraulic oil pass through the overflow valve and the hydraulic cylinder to push the piston to apply the set pressure to the long shroud 5 and the molten steel tank. During the pressing process, the pressure and flow of the hydraulic system and the pressing effect of the long shroud and the molten steel tank are closely monitored. If the pressure is insufficient or the flow is too large, the pressure setting of the overflow valve can be adjusted in time; finally, when the long shroud and the molten steel tank reach the required pressing state, the hydraulic pump is turned off.

[0043] Knob ① is the first driving key, which controls the first driving motor 21 through an electrical signal. After receiving the electrical signal, the first driving motor 21 drives the first slewing bearing 22 to rotate around its axis. The rotation of the first slewing bearing 22 drives the operating arm 41 to rotate and translate between the working position and the storage position. In some embodiments of the utility model, knob ① can rotate clockwise or counterclockwise. Knob ① is symmetrically arranged with 8 gears, of which the two symmetrical gears arranged in the horizontal direction are both 0 positions. When knob ① is turned to 0 position, it is manifested as controlling the first slewing bearing 22 to stop rotating. The 6 gears other than the two 0-position gears control the rotation speed of the first slewing bearing 22 respectively. The 3 gears above the symmetrical 0 position are respectively "forward fast", "forward medium speed" and "forward slow speed" for controlling the clockwise rotation of the first slewing bearing 22, and the 3 gears below the symmetrical 0 position are respectively "reverse fast", "reverse medium speed" and "reverse slow speed" for controlling the counterclockwise rotation of the first slewing bearing 22.

[0044] Knob ② is the second driving key, which controls the second driving motor 24 through an electrical signal. After receiving the electrical signal, the second driving motor 24 drives the second slewing bearing 25 to rotate. The rotation of the second slewing bearing 25 drives the eccentric support 26 to rotate on the second slewing bearing 25, so as to realize the distance between the long water inlet 5 end of the operating arm 41 and the molten steel tank by rotating the eccentric support 26; Like knob ①, knob ② can be rotated clockwise or counterclockwise. Knob ② is symmetrically set with 8 gears, including setting in the horizontal There are two symmetrical 0 positions in the direction. When the knob ② is turned to the 0 position, it is manifested as controlling the second slewing bearing 25 to stop rotating; the 6 gears except the two 0-position gears respectively control the rotation speed of the second slewing bearing 25, and the 3 gears above the symmetrical 0 position are respectively "forward fast", "forward medium speed" and "forward slow speed" for controlling the clockwise rotation of the second slewing bearing 25, and the 3 gears below the symmetrical 0 position are respectively "reverse fast", "reverse medium speed" and "reverse slow speed" for controlling the counterclockwise rotation of the second slewing bearing 25.

[0045] Knob ③ is the third driving key, which controls the third driving motor 44 through an electrical signal. After receiving the electrical signal, the third driving motor 44 drives the operating arm 41 to rotate along its axis, so as to achieve the effect of avoiding the operating arm 41 when cleaning and purging the long water outlet 5; the same as knob ①, knob ③ can be rotated clockwise or counterclockwise, and knob ③ is symmetrically arranged with 8 gears, including two symmetrical 0 positions arranged in the horizontal direction. When knob ③ is turned to 0 position, it is manifested as controlling the operating arm 41 to stop rotating; the 6 gears other than the two 0-position gears control the rotation speed of the operating arm 41 respectively, and the 3 gears above the symmetrical 0 position are respectively "forward fast", "forward medium speed" and "forward slow speed" for controlling the clockwise rotation of the operating arm 41, and the 3 gears below the symmetrical 0 position are respectively "reverse fast", "reverse medium speed" and "reverse slow speed" for controlling the counterclockwise rotation of the operating arm 41.

[0046] Embodiment 1 is a process of installing a shroud 5 using the shroud operating device of the utility model, comprising the following steps:

[0047] S1, press the button on the operator panel Turn on the hand operator, at which time the hand operator is in an operable state, and the first drive motor 21, the second drive motor 24, and the third drive motor 44 are all in a powered state;

[0048] S2, select the rotation speed and rotation direction of the first slewing bearing 22 according to the actual situation, and rotate the knob ① to the corresponding gear position. At this time, the first slewing bearing 22 starts to rotate around its own axis, and drives the upper operating arm 41 to rotate horizontally around its end away from the long shroud 5 until the operating arm 41 rotates to the predetermined working position, and then rotate the knob ① to the 0 position, at which time the operating arm 41 stops rotating;

[0049] S3, select the rotation speed and rotation direction of the second slewing bearing 25 according to the actual situation, rotate the knob ② to the corresponding gear position, so that the second slewing bearing 25 rotates around its own axis, and the eccentric support 26 rotates, and then adjusts the position of the upper part, the operating arm 41, until the long nozzle 5 on the operating arm 41 reaches the long nozzle 5 installation position of the molten steel tank, and then rotates the knob ② to 0 position, at which time the eccentric support 26 stops rotating;

[0050] S4, select the rotation speed and rotation direction of the operating arm 41 according to the actual situation, rotate the knob ③ to the corresponding gear position, and the third drive motor 44 drives the operating arm 41 to rotate around its axis until the long nozzle 5 on the operating arm 41 is aligned with the installation position of the long nozzle 5 at the molten steel tank, and then rotate the knob ③ to 0 position, at which time the operating arm 41 stops rotating;

[0051] S5, long press button ④ or button ⑤, the hydraulic cylinder 3 operates internally, driving the operating arm 41 to rise or fall, until the long water nozzle 5 at one end of the operating arm 41 contacts the molten steel ladle, then release button ④ or button ⑤;

[0052] S6, press button ⑥ to make the long nozzle 5 press the molten steel tank tightly, and then press the button again The hand operator is turned off. At this time, the hand operator is in an inoperable state, and the first drive motor 21, the second drive motor 24, and the third drive motor 44 are all in a power-off state to avoid misoperation.

[0053] The long water nozzle operating device of the utility model can realize manual remote operation, reducing the safety risk when manually replacing the molten steel tank; the structural form of the rotary unit is improved, and the cantilevered rotary arm mechanism is replaced by an eccentric support, and the force-bearing structure form of the device is optimized from a cantilever form with single-side force to a more stable eccentric pressure form, thereby improving the structural safety and durability; the long water nozzle 5 and the molten steel tank are precisely docked and installed through the first and second rotary bearings; and the long water nozzle 5 and the molten steel tank are pressed together with the hydraulic cylinder 3 which can realize the lifting function. After pressing, the long water nozzle 5 can move with the molten steel tank within a certain range, which has a positive effect in preventing the backflow of molten steel, maintaining the temperature of molten steel, improving the purity of molten steel, extending the service life and improving production efficiency.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the utility model.

Claims

1. A shroud operating device, characterized in that: The invention comprises a base (1) and a slewing unit (2) arranged on the base (1), wherein the slewing unit (2) pivots around its own axis; an operating arm unit (4) is arranged at one end of the slewing unit (2) away from the base (1), wherein the slewing unit (2) is connected to the operating arm unit (4) via a hydraulic cylinder (3), wherein the hydraulic cylinder (3) drives the operating arm unit (4) to move in a direction approaching or away from the slewing unit (2); the operating arm unit (4) is arranged horizontally, wherein one end of the operating arm unit (4) away from the hydraulic cylinder (3) is connected to a long water outlet (5); and the invention also comprises a remote operating unit (6) electrically connected to the slewing unit (2) and the hydraulic cylinder (3), wherein the remote operating unit (6) controls the slewing unit (2) to pivot around its own axis, and controls the hydraulic cylinder (3) to drive the operating arm unit (4) to move in a direction approaching or away from the slewing unit (2); The rotary unit (2) comprises an eccentric support (26), the eccentric support (26) comprising a fixed section (261) and an eccentric section (262) connected to each other, the axial center line distance between the fixed section (261) and the eccentric section (262) being L; the fixed section (261) is coaxially arranged at one end of the rotary unit (2) close to the hydraulic cylinder (3), and the eccentric section (262) is coaxially arranged at one end of the hydraulic cylinder (3) close to the rotary unit (2).

2. The shroud operating device according to claim 1, characterized in that: The rotary unit (2) further comprises a first rotary bearing (22), a first support (23), and a second rotary bearing (25) which are arranged in sequence from the base (1) to the direction of the hydraulic cylinder (3), and the first rotary bearing (22), the first support (23), and the second rotary bearing (25) are arranged coaxially; the first rotary bearing (22) is arranged on the base (1); and the eccentric support (26) is arranged at one end of the second rotary bearing (25) close to the hydraulic cylinder (3).

3. The shroud operating device according to claim 2, characterized in that: The first slewing bearing (22) is provided with a first drive motor (21), and the first drive motor (21) controls the first slewing bearing (22) to rotate around its own axis; the first drive motor (21) is electrically connected to the remote operation unit (6).

4. The shroud operating device according to claim 2, characterized in that: The second slewing bearing (25) is provided with a second drive motor (24), and the second drive motor (24) controls the second slewing bearing (25) to rotate around its own axis; the second drive motor (24) is electrically connected to the remote operation unit (6).

5. The shroud operating device according to claim 1, characterized in that: The operating arm unit (4) comprises a retainer (43), a second support (42) and an operating arm (41) which are arranged in sequence from the hydraulic cylinder (3) to the long water outlet (5); the retainer (43), the second support (42) and the operating arm (41) are coaxially arranged; the long water outlet (5) is connected to an end of the operating arm (41) away from the second support (42).

6. The shroud operating device according to claim 5, characterized in that: The operating arm (41) is rotatably connected to the second support (42), and the operating arm (41) is capable of rotating around its own axis.

7. The shroud operating device according to claim 6, characterized in that: The retainer (43) is provided with a third drive motor (44) to drive the operating arm (41) to rotate around its own axis; the third drive motor (44) is electrically connected to the remote operating unit (6).

8. The shroud operating device according to claim 5, characterized in that: The retainer (43) is a worm gear reducer.

9. The shroud operating device according to claim 1, characterized in that: The hydraulic cylinder (3) is a lifting drive hydraulic cylinder (3).

10. The shroud operating device according to any one of claims 1 to 9, characterized in that: The remote operation unit (6) is a hand operator.

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