Sea ice observation arm device

Abstract

The application discloses a sea ice observation arm device, which comprises an observation arm structure, a joint structure and a counterweight structure. The observation arm structure comprises a main arm and a cantilever, the front end of the main arm is hingedly provided with the cantilever, the cantilever and the main arm have a folding and coinciding storage state and a controllable angle suspension state; the joint structure comprises a base joint and a cantilever joint, the base joint is arranged between the main arm and a base part and is used for controlling the angle of the main arm lifting, the cantilever joint is arranged at the hinged part of the main arm and the cantilever and is used for controlling the folding storage state or the controllable angle suspension state of the main arm and the cantilever; the counterweight structure is provided with an extension arm at the end of the main arm away from the cantilever, and the extension arm is provided with a counterweight mechanism. The sea ice observation arm device can meet the safe storage and fixation of the observation arm of a survey ship under various conditions. Meanwhile, the observation arm structure is compact, simple to operate and convenient to maintain.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of marine machinery technology, in particular to a sea ice observation arm device. BACKGROUND

[0002] Ocean hydro-meteorological observation is the basis for studying, developing and utilizing the ocean, and plays a very important role in maintaining ocean rights, developing ocean resources, warning ocean disasters and protecting the ocean environment. Sea ice is usually observed on survey ships. The ice observation elements of floating ice are ice quantity, density, ice type, etc., and the main observation elements of fixed ice are ice type, ice thickness and boundary. Except for ice thickness, which is usually measured by ice drill and ice ruler, the rest is measured by visual observation method. At this time, the ice surface needs to be observed on the survey ship. Therefore, the survey ship urgently needs a sea ice observation arm device to hoist and deploy a special observation device from a specified position to a distance of 3-4m from the ice surface for comprehensive observation of sea ice and ice surface.

[0003] When hoisting and deploying the ice observation device, the load of the observation arm device varies greatly depending on the number and weight of the device. For example, in the prior art, the application number CN201720772171.5 is a rotating boom, belonging to the field of mechanical technology. It solves the problem of inconvenient adjustment in the prior art. The rotating boom includes a vertical column and a crossbeam. The lower end of the vertical column is connected to the ground and the vertical column is vertically arranged. The crossbeam is horizontally arranged and the inner end of the crossbeam is connected to the upper end of the vertical column. The crossbeam includes two rod bodies, one and two. The inner end of the rod body one is axially fixed to the upper end of the vertical column. The outer end of the rod body one is connected to the inner end of the rod body two through a joint mechanism. The outer end of the rod body two is connected to the hoisting device. Under the action of the joint mechanism, the rod body two can rotate relative to the rod body one. Although the device has a simple structure, when the observation device is suspended at the end of the boom, the vertical column bears a large lateral overturning moment and the vertical column is easily bent, which is inconvenient to use. In addition, the side crossbeam of the device is fixedly arranged and cannot be stored, occupying a large horizontal space. In view of the above, it is necessary to propose a sea ice observation arm device to solve the above problems. SUMMARY

[0004] The purpose of the present application is to solve the above technical problems and provide a sea ice observation arm device.

[0005] In order to achieve the above purpose, the present application adopts the following technical scheme: a sea ice observation arm device, comprising:

[0006] The observation arm structure comprises a main arm and a cantilever. The front end of the main arm is hingedly connected to the cantilever. The cantilever and the main arm have a folding and overlapping storage state, and a cantilever and main arm with a controllable included angle suspension state.

[0007] The joint structure comprises a base joint and a cantilever joint, the base joint is arranged between the main arm and the base part for controlling the angle of the main arm, and the cantilever joint is arranged at the hinge position of the main arm and the cantilever, and the cantilever joint is used for controlling the main arm and the cantilever to be in a folded storage state or a cantilever state with a control included angle.

[0008] The counterweight structure is arranged at the end of the main arm away from the cantilever, and the counterweight mechanism is arranged on the extension arm.

[0009] The base joint comprises an adjustable shaft seat mechanism and an adjustable support mechanism, the adjustable shaft seat mechanism is used for adjusting and fixing the hinge position of the main arm and the base part according to a preset track, and the working angle of the main arm is expanded; and the adjustable support mechanism is used for jacking and controlling the lifting angle of the main arm, and the bottom position of the adjustable support mechanism is moved to improve the lifting efficiency.

[0010] Further, the cantilever joint comprises a V-shaped arm, a connecting rod, a first fixed arm and a second fixed arm, the cantilever is hingedly connected to the end of the main arm through a first hinge part, the first fixed arm is formed on the end of the main arm, one end of the first fixed arm is the first hinge part, and the other end is a first hinge point; the second fixed arm is formed on the cantilever, one end of the second fixed arm is the first hinge part, and the other end is a second hinge point; one end of the V-shaped arm is hingedly connected to the first hinge point, and the other end is hingedly connected to the connecting rod; the other end of the connecting rod is hingedly connected to the second hinge point; and the V-shaped arm, the connecting rod, the first fixed arm and the second fixed arm form a four-bar linkage structure.

[0011] Further, the cantilever joint further comprises a control oil cylinder, the main arm is further provided with a third hinge point, the corner of the V-shaped arm is provided with a fourth hinge point, one end of the control oil cylinder is hingedly connected to the third hinge point, and the other end is hingedly connected to the fourth hinge point.

[0012] Further, the base part comprises a bottom plate and a vertical plate, the vertical plate is vertically arranged at one end of the bottom plate, preset tracks are arranged on the vertical plates, one end of the main arm is slidably connected in the preset tracks, and the preset tracks are provided with a longitudinal included angle in the vertical direction.

[0013] Further, the adjustable shaft seat mechanism comprises a T-shaped shaft and a power device, the T-shaped shaft comprises a horizontal shaft, a shaft shoulder and a pull shaft, the shaft shoulder is arranged at the middle part of the horizontal shaft, the pull shaft is arranged at the shaft shoulder and is perpendicular to the horizontal shaft, the end of the main arm is provided with a shaft seat, the shaft shoulder is arranged in the shaft seat, the horizontal shaft is penetrated through the shaft seat and extends out from both sides, the ends of the horizontal shaft on both sides are arranged in the preset tracks to form a notch matching, the bottom plate is provided with a through hole through which the pull shaft passes, and the power device is arranged on the lower side of the bottom plate, the output end of the power device is connected with the pull shaft for driving the horizontal shaft to move in the preset tracks.

[0014] Further, the power device is a first driving motor, the bottom plate lower end surface is provided with a mounting slope, the mounting slope is perpendicular to the preset track direction, the first driving motor is fixed on the mounting slope, and the first driving motor is matched with the pull shaft through a worm and gear.

[0015] Further, the power device is a hydraulic oil cylinder, the output end of the hydraulic oil cylinder is connected with the pull shaft, and the cylinder body of the hydraulic oil cylinder is hinged to the bottom plate.

[0016] Further, the adjustable supporting mechanism comprises a supporting oil cylinder, a horizontal track, a sliding block and a ball screw, the fifth hinge point is arranged on the lower side of the middle part of the main arm, the horizontal track is arranged on the bottom plate and extends along the length direction of the bottom plate, the sliding block is slidably arranged in the horizontal track, the sixth hinge point is arranged on the upper part of the sliding block, the lower end of the supporting oil cylinder is hinged to the sixth hinge point, and the upper end of the supporting oil cylinder is hinged to the fifth hinge point, and the ball screw is rotatably connected to the bottom plate and is engaged with the sliding block, so that the ball screw drives the sliding block to move along the horizontal track.

[0017] Further, the extension arms are symmetrically arranged on both sides of the main arm, the extension arms are L-shaped and comprise a shorter connecting part and a longer extension part, the extension parts of the extension arms on both sides are located outside the base part, the counterweight mechanism is arranged on the extension part, the counterweight mechanism comprises a hanging rod and a mass piece, a plurality of hanging rods are arranged at intervals on the outside of the extension part, and the mass piece is fixed on a certain hanging rod.

[0018] Further, the lower side of the base part is connected with the stand column, the lower end surface of the bottom plate is rotatably connected with the stand column through a rotary driving part, the second driving motor is fixed on one side of the stand column, and the output end of the second driving motor is connected with the rotary driving part.

[0019] Compared with the prior art, the application has the following beneficial effects:

[0020] 1. The sea ice observation arm device can meet the requirements of safe storage and fixation of the observation arm under various conditions of the investigation ship.

[0021] 2. The balance weight structure is arranged on the opposite direction of the main arm, the weight of the balance weight can be changed when the observation device is hung at the end of the cantilever, so that the weight on both sides of the stand column is balanced as much as possible, and the stress of the stand column during hanging is more stable.

[0022] 3. The cantilever and the main arm can be folded, so that the transverse space occupation of the device can be saved after being folded.

[0023] 4、The adjustable shaft seat mechanism and the adjustable support mechanism can conveniently adjust the position and angle of the root of the main arm, so that the whole observation arm obtains more labor-saving support or a larger adjustable angle range. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of a sea ice observation arm device of the present application;

[0025] Figure 2 It is a side view of a sea ice observation arm device of the present application;

[0026] Figure 3 It is a top view of a sea ice observation arm device of the present application;

[0027] Figure 4 It is a schematic diagram of the cantilever and the main arm coinciding to form a storage state in the present application;

[0028] Figure 5 It is a schematic diagram of the cantilever and the main arm unfolding to 180 degrees in the present application;

[0029] Figure 6 It is an exploded view of a sea ice observation arm device of the present application;

[0030] In the figure: 1, main arm; 2, cantilever; 3, extension arm; 4, counterweight mechanism; 5, adjustable shaft seat mechanism; 6, adjustable support mechanism; 7, V-shaped arm; 8, connecting rod; 9, first fixed arm; 10, second fixed arm; 11, first hinge point; 12, second hinge point; 13, first hinge part; 14, control oil cylinder; 15, third hinge point; 16, fourth hinge point; 17, bottom plate; 18, vertical plate; 19, preset track; 20, longitudinal included angle; 21, T-shaped shaft; 22, first drive motor; 23, cross shaft; 24, shaft shoulder; 25, pull shaft; 26, shaft seat; 27, through hole; 28, installation inclined surface; 29, support oil cylinder; 30, horizontal track; 31, sliding block; 32, ball screw; 33, fifth hinge point; 34, sixth hinge point; 35, connecting part; 36, extension part; 37, mounting rod; 38, mass piece; 39, rotary drive part; 40, second drive motor. DETAILED DESCRIPTION

[0031] The technical solutions of the present application will be described below in combination with embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments.

[0032] Embodiment one:

[0033] A sea ice observation arm device, such as Figure 1As shown, the observation arm structure includes a main arm 1 and a cantilever 2, the front end of the main arm 1 is hingedly provided with the cantilever 2, the cantilever 2 and the main arm 1 have a folding and coinciding storage state, i.e. the included angle between the cantilever 2 and the main arm 1 is 0°, as shown in Figure 4 ; and a suspension state of a controllable included angle between the cantilever 2 and the main arm 1, the suspension state is that the cantilever 2 and the main arm 1 can stay and remain at any angle within the angle adjusting range, as shown in Figure 5 ; the included angle between the cantilever 2 and the main arm 1 is 180°, and the arrangement is in a straight line type, i.e. the observation arm structure can be controlled at any angle between 0° and 180°, thereby facilitating the use when the observation equipment is hoisted.

[0034] The cantilever 2 joint is provided at the hinged position of the main arm 1 and the cantilever 2, and is used to control the folding storage state or the suspension state of a controllable included angle between the main arm 1 and the cantilever 2. Specifically, as shown in Figure 2 , 6 , the cantilever 2 joint includes a V-shaped arm 7, a connecting rod 8, a first fixed arm 9 and a second fixed arm 10, the cantilever 2 and the main arm 1 are hingedly connected at the end through a first hinge part 13, the first hinge part 13 is the hinged end of the cantilever 2 and the main arm 1; the first fixed arm 9 is formed at the end of the main arm 1, one end of the first fixed arm 9 is the first hinge part 13, and the other end is a first hinge point 11, which is used to connect and arrange the V-shaped arm 7; the second fixed arm 10 is formed on the cantilever 2, one end of the second fixed arm 10 is the first hinge part 13, and the other end is a second hinge point 12, which is used to connect and arrange the connecting rod 8; one end of the V-shaped arm 7 is hingedly connected to the first hinge point 11, and the other end is hingedly connected to the connecting rod 8; the other end of the connecting rod 8 is hingedly connected to the second hinge point 12; the V-shaped arm 7, the connecting rod 8, the first fixed arm 9 and the second fixed arm 10 form a four-bar linkage structure, as shown in Figure 2 . Further, the cantilever 2 joint further includes a control oil cylinder 14, the main arm 1 is further provided with a third hinge point 15, the corner of the V-shaped arm 7 is provided with a fourth hinge point 16, one end of the control oil cylinder 14 is hingedly connected to the third hinge point 15, and the other end is hingedly connected to the fourth hinge point 16. In actual use, the angle rotation of the cantilever 2 relative to the main arm 1 can be controlled by the extension and retraction of the control oil cylinder 14, and the storage state as shown in Figure 4 can be realized, at this time, the main arm 1 is vertically erected, and the cantilever 2 and the main arm 1 are close together, which can be maximally stored, thereby saving the space occupation in the width direction when the equipment is not used, and freeing the deck space.

[0035] Example Two:

[0036] The joint structure includes a base joint and a cantilever 2 joint. The base joint is located between the main arm 1 and the base portion to control the lifting angle of the main arm 1. The base joint includes an adjustable bearing mechanism 5 and an adjustable support mechanism 6, such as... Figure 6 As shown, the base includes a base plate 17 and upright plates 18. One end of the base plate 17 is vertically mounted on the upright plate 18, and pre-set tracks 19 are provided on both sides of the upright plates 18. One end of the main arm 1 is slidably connected and placed within the pre-set track 19. The pre-set track 19 has a longitudinal angle 20 with the vertical direction. Figure 2 As shown; it is understandable that in actual use, the method of setting the preset track 19 vertically can also be adopted. However, in actual hoisting use, if the angle of the main boom 1 is adjusted through the preset track 19, as the root of the main boom 1 rises within the preset track 19, the front end of the cantilever 2 will move forward a certain amount, causing the observation equipment to move one end forward in the direction pointed by the cantilever 2 during hoisting, resulting in poor positional stability during hoisting. In this embodiment, the upper end of the preset track 19 is tilted towards the rear of the equipment. In the actual adjustment of the main boom 1, for example, as the root of the main boom 1 rises within the preset track 19, the main boom 1 can be pulled backward a corresponding distance as the preset track 19 tilts backward during the rise, thereby neutralizing the forward movement of the end of the cantilever 2 during the adjustment process, and thus better maintaining the horizontal stability of the hoisting end.

[0037] The adjustable bearing mechanism 5 allows the hinged portion of the main boom 1 and the base to move, adjust, and fix along a preset track 19, thereby expanding the working angle of the main boom 1. In the prior art, the root of the main boom 1 is usually a fixed-position hinged structure, meaning that the angle of the main boom 1 can only be adjusted through the hinge. However, under certain working conditions, due to the influence of the position of the support cylinder 29, the main boom 1 cannot achieve forward extension control with a small included angle to the base plate 17. In this embodiment, when the support cylinder 29 reaches its adjustment limit, the adjustable bearing mechanism 5 can also be controlled to move the root of the main boom 1 upward along the preset track 19, thereby further adjusting the angle of the main boom 1. In addition, in some cases, due to insufficient extension of the support cylinder 29, the equipment cannot achieve the desired working angle. Figure 4 The upright, retracted position shown can be achieved by lowering the main boom 1 using this structure, allowing it to be retracted even when the length of the support cylinder 29 is insufficient. This expands the operating angle range of the main boom 1.

[0038] Specifically, such as Figure 6The adjustable shaft seat mechanism 5 includes a T-shaped shaft 21, a power device; the T-shaped shaft 21 includes a horizontal shaft 23, a shaft shoulder 24, and a pull shaft 25, the shaft shoulder 24 is arranged in the middle of the horizontal shaft 23, the pull shaft 25 is arranged vertically to the horizontal shaft 23 at the shaft shoulder 24, the end of the main arm 1 is provided with a shaft seat 26, the shaft shoulder 24 is arranged in the shaft seat 26, the shaft shoulder 24 is provided with a thrust bearing on both sides and is in contact with the inner wall of the shaft seat 26, the horizontal shaft 23 is penetrated and extended from both sides of the shaft seat 26, the end of the horizontal shaft 23 on both sides is arranged in the preset track 19 to form a notch cooperation, the bottom plate 17 is provided with a through hole 27 for the pull shaft 25 to pass through, the power device is arranged on the lower side of the bottom plate 17, and the output end of the power device is connected with the pull shaft 25 for driving the horizontal shaft 23 to move in the preset track 19. Under the control of the power device, the pull shaft 25 is pulled to control the angle adjustment of the main arm 1.

[0039] As an embodiment of the power device, the power device is a first driving motor 22, the lower end surface of the bottom plate 17 is provided with a mounting inclined surface 28, the mounting inclined surface 28 is perpendicular to the direction of the preset track 19, the first driving motor 22 is fixedly arranged on the mounting inclined surface 28, the first driving motor 22 is in worm gear cooperation with the pull shaft 25, in actual use, the pull shaft 25 is in the shape of a screw rod, the output end of the first driving motor 22 is provided with a worm reducer, the internal thread in the inner ring of the worm gear is engaged with the external thread on the outer wall of the pull shaft 25, the output end of the first driving motor 22 is provided with a worm that is engaged with the thread of the outer ring of the worm gear, the output end of the first driving motor 22 drives the worm gear to rotate through the worm, drives the pull rod to move, and drives the end of the main arm 1 to move under the guidance of the preset track 19 through the movement of the pull rod.

[0040] As another embodiment of the power device, the power device is a hydraulic oil cylinder, the output end of the hydraulic oil cylinder is connected with the pull shaft 25, and the cylinder body of the hydraulic oil cylinder is hinged to the bottom plate 17. In this embodiment, the hydraulic oil cylinder can achieve the same control effect.

[0041] The adjustable support mechanism 6 is used for jacking and controlling the lifting angle of the main arm 1 and controlling the bottom position movement of the adjustable support mechanism 6 to improve the lifting efficiency. Specifically, as shown in the figure, Figure 4 , 5As shown, the adjustable support mechanism 6 includes a support cylinder 29, a horizontal track 30, a slider 31, and a ball screw 32. The lower side of the middle of the main arm 1 is provided with a fifth hinge point 33. The horizontal track 30 is set on the base plate 17 and extends along the length of the base plate 17. The slider 31 is slidably set in the horizontal track 30. The upper part of the slider 31 is provided with a sixth hinge point 34. The lower end of the support cylinder 29 is hinged to the sixth hinge point 34, and the upper end is hinged to the fifth hinge point 33. The ball screw is rotatably connected to the base plate 17, and the ball screw 32 passes through the slider 31 and meshes with it. The rotation of the ball screw 32 drives the slider 31 to move along the horizontal track 30. In the prior art, the hinge position at the lower end of the support cylinder 29 is fixed. In actual use, especially when the main boom 1 is at a small lifting angle, the component force of the support cylinder 29 perpendicular to the main boom 1 is small. As a result, a small portion of the supporting force of the support cylinder 29 is used to lift the main boom 1, making it unable to complete the lifting and lowering of heavier loads, thus reducing the efficiency of the support cylinder 29. However, in this embodiment, by moving the slider 31 outward, the supporting force of the support cylinder 29 perpendicular to the main boom 1 can be increased, thereby improving the lifting and lowering of heavier loads.

[0042] Example 3:

[0043] The counterweight structure includes an extension arm 3 at the end of the main arm 1 furthest from the cantilever 2. The extension arm 3 extends in the opposite direction to the main arm 1 towards the hinge point between the main arm 1 and the base, positioning the extension arm 3 and the main arm 1 on opposite sides of the hinge point. A counterweight mechanism 4 is mounted on the extension arm 3. Two extension arms 3 are symmetrically arranged on both sides of the main arm 1. Figure 2 , 5 As shown, the extension arm 3 is L-shaped, including a shorter connecting part 35 and a longer extension part 36. The extension parts 36 of the two extension arms 3 are located on the outer side of the base. The counterweight mechanism 4 is disposed on the extension part 36. The counterweight mechanism 4 includes a hanging rod 37 and a mass plate 38. Multiple hanging rods 37 are spaced apart on the outer side of the extension part 36, and the mass plate 38 is fixed to a certain hanging rod 37. The extension arms 3 on both sides can be conveniently placed on both sides of the base plate 17 when in the storage state, avoiding interference with the rotation of the main arm 1.

[0044] Furthermore, the lower side of the base is connected to the column, the lower end face of the base plate 17 is rotatably connected to the column through the rotary drive unit 39, and a second drive motor 40 is fixedly provided on one side of the column. The output end of the second drive motor 40 is connected to the rotary drive unit 39. The horizontal rotation angle of the entire upper equipment can be controlled by the second drive motor 40, so that the cantilever 2 can rotate into or out of the deck.

[0045] The above merely describes preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art, according to the technical solution and inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A sea ice observation arm device, characterized in that, include: The observation arm structure includes a main arm (1) and a cantilever (2). The cantilever (2) is hinged to the front end of the main arm (1). The cantilever (2) and the main arm (1) are in a folded and overlapping storage state, and the cantilever (2) and the main arm (1) are in a suspended state with a controllable angle between them. The joint structure includes a base joint and a cantilever (2) joint. The base joint is located between the main arm (1) and the base part to control the angle at which the main arm (1) is raised. The cantilever (2) joint is located at the hinge part between the main arm (1) and the cantilever (2). The cantilever (2) joint is used to control the main arm (1) and the cantilever (2) to be in a folded storage state or in a suspended state with a controlled angle. The counterweight structure has an extension arm (3) at the end of the main arm (1) away from the cantilever (2), and a counterweight mechanism (4) is provided on the extension arm (3). The base joint includes an adjustable bearing mechanism (5) and an adjustable support mechanism (6). The adjustable bearing mechanism (5) allows the hinged part between the main boom (1) and the base to move, adjust, and fix along a preset track (19), thereby expanding the working angle of the main boom (1). The adjustable support mechanism (6) is used to lift and control the lifting angle of the main boom (1) and to control the movement of the bottom position of the adjustable support mechanism (6) to improve lifting efficiency. The base includes a base plate (17) and a vertical plate (18). The vertical plate (18) is vertically installed at one end of the base plate (17). The two vertical plates (18) are provided with preset tracks (19). One end of the main arm (1) is slidably connected and placed in the preset track (19). The preset track (19) is provided with a longitudinal angle (20) with the vertical direction, and the upper end of the preset track (19) is tilted towards the rear of the equipment.

2. The sea ice observation arm device according to claim 1, characterized in that, The cantilever (2) joint includes a V-shaped arm (7), a connecting rod (8), a first fixed arm (9), and a second fixed arm (10). The cantilever (2) is hinged to the end of the main arm (1) through a first hinge part (13). The first fixed arm (9) is formed at the end of the main arm (1). One end of the first fixed arm (9) is the first hinge part (13), and the other end is the first hinge point (11). The second fixed arm (10) is formed on the cantilever (2). One end of the second fixed arm (7) is hinged to the first hinge point (11), and the other end is hinged to the connecting rod (8). The other end of the connecting rod (8) is hinged to the second hinge point (12). The V-shaped arm (7), the connecting rod (8), the first fixed arm (9), and the second fixed arm (10) form a four-bar (8) structure.

3. The sea ice observation arm device according to claim 2, characterized in that, The cantilever (2) joint also includes a control cylinder (14), the main arm (1) is also provided with a third hinge point (15), the corner of the V-shaped arm (7) is provided with a fourth hinge point (16), one end of the control cylinder (14) is hinged to the third hinge point (15), and the other end is connected to the fourth hinge point (16).

4. The sea ice observation arm device according to claim 1, characterized in that, The adjustable bearing mechanism (5) includes a T-shaped shaft (21) and a power device; the T-shaped shaft (21) includes a horizontal shaft (23), a shoulder (24), and a pull shaft (25). The horizontal shaft (23) has a shoulder (24) in the middle, and a pull shaft (25) is provided at the shoulder (24) perpendicular to the direction of the horizontal shaft (23). The main arm (1) has a bearing (26) at its end. The shoulder (24) is placed inside the bearing (26). The horizontal shaft (23) extends through from both sides of the bearing (26). The ends of the horizontal shafts (23) on both sides are placed in a preset track (19) to form a groove fit. The base plate (17) has a through hole (27) for the pull shaft (25) to pass through. The power device is located on the lower side of the base plate (17). The output end of the power device is connected to the pull shaft (25) to drive the horizontal shaft (23) to move in the preset track (19).

5. The sea ice observation arm device according to claim 4, characterized in that, The power device is a first drive motor (22). The lower end face of the base plate (17) is provided with an installation inclined surface (28). The installation inclined surface (28) is perpendicular to the direction of the preset track (19). The first drive motor (22) is fixedly mounted on the installation inclined surface (28). The first drive motor (22) and the pull shaft (25) are in worm gear cooperation.

6. The sea ice observation arm device according to claim 4, characterized in that, The power unit is a hydraulic cylinder, the output end of which is connected to the pull shaft (25), and the cylinder body of the hydraulic cylinder is hinged to the base plate (17).

7. A sea ice observation arm device according to claim 4, characterized in that, The adjustable support mechanism (6) includes a support cylinder (29), a horizontal track (30), a slider (31), and a ball screw (32). The main arm (1) has a fifth hinge point (33) on its lower side. The horizontal track (30) is set on the base plate (17) and extends along the length of the base plate (17). The slider (31) is slidably set in the horizontal track (30). The upper part of the slider (31) has a sixth hinge point (34). The lower end of the support cylinder (29) is hinged to the sixth hinge point (34), and the upper end is hinged to the fifth hinge point (33). The ball screw is rotatably connected to the base plate (17), and the ball screw (32) passes through the slider (31) and meshes with it. The ball screw (32) rotates to drive the slider (31) to move along the horizontal track (30).

8. The sea ice observation arm device according to claim 1, characterized in that, The extension arm (3) is symmetrically provided on both sides of the main arm (1). The extension arm (3) is L-shaped and includes a shorter connecting part (35) and a longer extension part (36). The extension parts (36) of the two extension arms (3) are located on the outside of the base part. The counterweight mechanism (4) is provided on the extension part (36). The counterweight mechanism (4) includes a hanging rod (37) and a mass plate (38). Multiple hanging rods (37) are provided at intervals on the outside of the extension part (36). The mass plate (38) is fixed on a certain hanging rod (37).

9. A sea ice observation arm device according to claim 1, characterized in that, The lower side of the base is connected to the column, and the lower end face of the base plate (17) is rotatably connected to the column through the rotary drive unit (39). A second drive motor (40) is fixedly provided on one side of the column, and the output end of the second drive motor (40) is connected to the rotary drive unit (39).

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