Swing damping stabilizer

Abstract

The invention relates to a swing damping stabilizer which is provided with a first support and a second support which can rotate relatively, the first support is used for installing a monitoring camera, the second support is used for being fixedly installed on hoisting machinery, and a rotating damper is arranged on a rotating shaft of the second support. The posture of the camera is stable when the camera deals with pitching swing of a suspension arm of the crane, and the first rotary nesting part and the second rotary nesting part which are of special structures are adopted on the rotating shaft and the second support, so that the rotating shaft and the second support can form a connection relation with higher nesting stability; and the disassembly and assembly convenience of the rotating shaft and the second bracket cannot be influenced by the mutually nested connection relationship, so that the maintenance of the camera is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of damping devices, and particularly relates to a swing damping stabilizer. Background Art

[0002] For traditional port heavy lifting machinery, loading and unloading goods basically rely on the manual and visual judgment and positioning of the operator, which is inefficient, prone to visual fatigue, and poses safety hazards. Therefore, many docks are undergoing remote control transformation, that is, through a video monitoring system, providing real-time operation images for the operator to achieve remote control operation. Currently, a common transformation method is to install a monitoring camera on the boom of the lifting machinery to observe the loading and unloading operations in real time. In the prior art, the monitoring camera is usually fixedly connected to the boom of the lifting machinery through a fixed bracket. However, since the boom of the lifting machinery often pitches and swings, the monitoring camera fixedly connected to the boom is easily affected by the vibration during the movement of the boom, resulting in unclear captured image frames. On the other hand, the monitoring camera fixedly connected to the boom cannot keep the shooting angle in the vertically downward direction, which is also not conducive to observing the operation situation more clearly. Summary of the Invention

[0003] In view of the above problems, the present invention proposes a swing damping stabilizer.

[0004] The present invention is implemented by the following technical solutions: The present invention proposes a swing damping stabilizer, which includes a first bracket, a second bracket, a housing, and a rotating shaft. The first bracket is fixedly connected to the housing, the second bracket is fixedly connected to the rotating shaft, and the rotating shaft is rotatably connected to the housing through a bearing. The first bracket is used for installing a monitoring camera, the second bracket is used for being fixedly installed on the lifting machinery, and a rotary damper is further arranged on the rotating shaft to generate damping for the rotation of the rotating shaft; Both ends of the rotating shaft in the axial direction are provided with first rotary nested parts. The second bracket is in a "U" shape, and both ends of the second bracket are provided with second rotary nested parts at positions corresponding to the rotating shaft. The first rotary nested part is in the shape of a strip-shaped protrusion. The second rotary nested part includes a rotary limiting hole and an insertion channel, wherein the inner end of the insertion channel is connected to the rotary limiting hole, and the outer end of the insertion channel extends to the edge of the second bracket. The rotary limiting hole is provided with a first right-angled boss and a second right-angled boss arranged in a counterpoint manner, and the first right-angled boss and the second right-angled boss are distributed on both sides of the extending path of the insertion channel. The first right-angled boss and the second right-angled boss divide the rotary limiting hole into a first sector-shaped limiting hole and a second sector-shaped limiting hole. The first rotary nested part is configured to be inserted into the rotary limiting hole along the insertion channel, and both ends of the first rotary nested part can rotate in the first sector-shaped limiting hole and the second sector-shaped limiting hole respectively; The rotating shaft and the second bracket are also fixed by threaded connection.

[0005] Preferably, the housing is a hollow cylindrical structure. A first bearing, a second bearing, and a third bearing are fixedly provided inside the housing. The first bearing and the second bearing are provided on the left half section of the rotating shaft, and the rotary damper and the third bearing are provided on the right half section of the rotating shaft.

[0006] Preferably, a first inner cavity and a second inner cavity are provided in the housing. The outer rings of the first bearing and the second bearing are fixed in the first inner cavity, and the outer ring of the third bearing is fixed in the second inner cavity. The rotating shaft passes through the housing and is fixed to the inner rings of the first bearing, the second bearing, and the third bearing. The rotary damper includes a housing and a rotating part. The rotating part can rotate relative to the housing, and the rotating part is configured to have rotational damping. The housing is fixedly connected to the second inner cavity, and the rotating part is connected to the shaft hub of the rotating shaft.

[0007] Preferably, the rotating shaft includes a first shaft section at the head end and a second shaft section at the tail end. The first shaft section and the second shaft section are coaxially connected by a coupling.

[0008] Preferably, both ends of the length of the first rotating nested part are provided in an arc shape.

[0009] Preferably, at least two threaded holes are provided in the axial end face of the rotating shaft, and through holes are provided in the second bracket at positions corresponding to each threaded hole. Screws pass through the through holes and are screwed into the threaded holes.

[0010] The present invention has the following beneficial effects: The present invention realizes the attitude stability of the camera when coping with the pitching swing of the boom. Further, by adopting the structures of the first rotating nested part and the second rotating nested part, not only can a more stable connection relationship in which the rotating shaft and the second bracket are nested with each other be formed, but also the convenience of disassembling and assembling the rotating shaft and the second bracket will not be affected due to this nested connection relationship, which is convenient for the maintenance of the camera. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a perspective view of the swing damping stabilizer in the embodiment; Figure 2 is a side view of the swing damping stabilizer in the embodiment; Figure 3 is Figure 2 a cross-sectional view taken along line A-A in Figure 4 is a perspective view of the rotary damper in the embodiment; Figure 5 is a perspective view of the rotating shaft in the embodiment; Figure 6 is a perspective view of the second bracket in the embodiment; Figure 7 is a schematic diagram of the first rotating nested part inserted into the rotation limiting hole along the insertion channel in the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0012] To further illustrate the embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention, mainly used to illustrate the embodiments, and can be combined with the relevant descriptions in the specification to explain the operating principle of the embodiments. With reference to these contents, those of ordinary skill in the art should be able to understand other possible implementation manners and the advantages of the present invention. The components in the drawings are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0013] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation manners.

[0014] Refer to Figure 1 As shown, as a preferred embodiment of the present invention, a swing damping stabilizer is provided, which includes a first bracket 1 and a second bracket 2. The first bracket 1 is fixedly connected to the housing 3, and the second bracket 2 is fixedly connected to the rotating shaft 4. The rotating shaft 4 is also rotatably connected to the housing 3. Therefore, the first bracket 1 can rotate relative to the second bracket 2.

[0015] In this embodiment, both the first bracket 1 and the second bracket 2 are in a "U"-shaped plate-like structure. The first bracket 1 is used to install a monitoring camera, and the second bracket 2 is used to be fixedly installed on a lifting machine. For example, the first bracket 1 is fixedly installed on the boom of a lifting machine, and the boom can be an existing pitching swing type boom. The housing 3 is in a cylindrical structure in this embodiment. A bearing is provided inside the housing 3, and the rotating shaft 4 is rotatably connected to the housing 3 through the bearing. More specifically: Refer to Figure 3 , the housing 3 is a hollow structure. A first inner cavity 31 and a second inner cavity 32 are provided in the housing 3. The outer rings of the first bearing 51 and the second bearing 52 are fixed in the first inner cavity 31 (such as the outer rings of the first bearing 51 and the second bearing 52 are in interference fit with the inner wall of the first inner cavity 31), and the outer ring of the third bearing 53 is fixed in the second inner cavity 32 (such as the outer ring of the third bearing 53 is in interference fit with the inner wall of the second inner cavity 32). The rotating shaft 4 passes through the housing 3 and is fixed to the inner rings of the first bearing 51, the second bearing 52, and the third bearing 53 (such as the rotating shaft 4 is in interference fit with the inner rings of the first bearing 51, the second bearing 52, and the third bearing 53). In this way, the second bracket 2 fixedly connected to the rotating shaft 4 can rotate relative to the first bracket 1, and due to the action of the above-mentioned various bearings, the rotation of the second bracket 2 basically has no influence on the first bracket 1.

[0016] Furthermore, a rotary damper 6 is also arranged on the rotating shaft 4 to generate damping for the rotation of the rotating shaft 4 and suppress the rotation amplitude of the rotating shaft 4. The rotary damper 6 can adopt any rotary damper in the existing technology, such as an oil damper, a magnetic damper, a hydraulic damper, etc. In this embodiment, refer to Figure 4, the rotary damper 6 includes a housing 62 and a rotating part 61 which is rotatable relative to the housing 62. The rotating part 61 is configured to have rotational damping, such as the oil damping, magnetic damping, hydraulic damping, etc. mentioned above, which can be obviously achieved by the prior art and will not be elaborated here. The housing 62 is fixedly connected to the second inner cavity 32, for example, the housing 62 is fixed to the second inner cavity 32 by threaded connection. The rotating part 61 is hub-connected to the rotating shaft 4. Thus, the rotating shaft 4 can drive the rotation of the rotating part 61. In this embodiment, a square shaft section 44 is provided on the rotating shaft 4, and a square inner hole 63 is provided on the rotating part 61. The hub connection between the rotating shaft 4 and the rotating part 61 is realized by inserting the square shaft section 44 into the square inner hole 63. Those skilled in the art can foresee that as long as the structure in which the rotating part 61 can form a hub connection with the rotating shaft 4 is feasible. For example, the square shaft section 44 and the square inner hole 63 are respectively changed to a triangular shaft and a triangular hole, or the square shaft section 44 and the square inner hole 63 are respectively changed to a round shaft and a round hole but are press-fitted together. These are all feasible alternative solutions.

[0017] Under the above settings, when the swing damping stabilizer of this embodiment is in use, the monitoring camera is fixedly installed on the first bracket 1, and the second bracket 2 is fixedly installed on the boom of the hoisting machinery. The first bracket 1 and the camera can maintain a vertically downward shooting angle under the action of gravity. When the boom swings up and down, it drives the second bracket 2 to rotate freely. Under the action of the first bearing 51, the second bearing 52 and the third bearing 53, the rotation of the second bracket 2 basically has no influence on the first bracket 1. At the same time, the rotary damper 6 suppresses the swing amplitude of the second bracket 2, achieving the functions of vibration reduction and stabilization, so that the shooting picture of the camera hardly shakes and is clearer.

[0018] The number of bearings for realizing the rotatable connection between the rotating shaft 4 and the housing 3 is not fixed. In other embodiments, two, four or other numbers of bearings can be set. The reason for setting three bearings in this embodiment is that a rotary damper 6 is also configured on the rotating shaft 4. The first bearing 51 and the second bearing 52 are arranged on the left half section of the rotating shaft 4, and the rotary damper 6 and the third bearing 53 are arranged on the right half section of the rotating shaft 4, making the overall weight of the damper more balanced.

[0019] More rotary dampers 6 can also be added as needed, for example, two or three rotary dampers 6 are provided.

[0020] Such as Figure 5 , the rotating shaft 4 is set as a segmented type in this embodiment. The rotating shaft 4 includes a first shaft section 41 at the head end and a second shaft section 42 at the tail end. The first shaft section 41 and the second shaft section 42 are coaxially connected by a coupling 43. Such a setting can facilitate the installation of the rotating shaft 4.

[0021] In this embodiment, the above-mentioned swing damping stabilizer structure realizes the attitude stability of the camera when dealing with the pitching swing of the boom. However, compared with the prior art, the structure of this embodiment is more complex. Since the monitoring camera is exposed to the high-altitude environment, its maintenance cycle is short. If the disassembly and assembly structure of the swing damping stabilizer is more complex, it is not conducive to the maintenance of the camera. Therefore, this embodiment further provides the following improvements to improve the disassembly and assembly convenience of the swing damping stabilizer of this embodiment.

[0022] As Figure 5 , both ends of the rotating shaft 4 in the axial direction are provided with first rotating nested parts 40, as Figure 6 , both ends of the second bracket 2 are provided with second rotating nested parts 20 at positions corresponding to the rotating shaft 4. Among them, the first rotating nested part 40 is in the shape of a strip-shaped protrusion, and both ends of the length of the first rotating nested part 40 are set to be arc-shaped. The second rotating nested part 20 includes: a rotation limiting hole 201 and an insertion channel 202, wherein the inner end of the insertion channel 202 is connected to the rotation limiting hole 201, and the outer end of the insertion channel 202 extends to the edge of the second bracket 2. In the rotation limiting hole 201, there are first right-angled bosses 2031 and second right-angled bosses 2032 arranged in a 180° alignment, and the first right-angled boss 2031 and the second right-angled boss 2032 are distributed on both sides of the extension path of the insertion channel 202. The first right-angled boss 2031 and the second right-angled boss 2032 divide the rotation limiting hole 201 into a first sector-shaped limiting hole 2041 and a second sector-shaped limiting hole 2042. The first rotating nested part 40 is configured to be inserted into the rotation limiting hole 201 along the insertion channel 202, and both ends of the first rotating nested part 40 can rotate in the first sector-shaped limiting hole 2041 and the second sector-shaped limiting hole 2042 respectively. And, at least two threaded holes 45 are provided on the axial end face of the rotating shaft 4, and through holes 21 are provided on the second bracket 2 at positions corresponding to each threaded hole 45.

[0023] Refer to Figure 7 and Figure 2 , when connecting the rotating shaft 4 and the second bracket 2, first insert the first rotating nested part 40 into the rotation limiting hole 201 along the insertion channel 202, and then manually rotate the first rotating nested part 40 by 90°, so that both ends of the first rotating nested part 40 are limited by the first right-angled boss 2031 and the second right-angled boss 2032 respectively. At this time, the first rotating nested part 40 and the insertion channel 202 intersect each other, and the rotating shaft 4 cannot be disengaged from the rotation limiting hole 201. Then, use a screw 7 to pass through the through hole 21 and be screwed into the threaded hole 45 to realize the fixed connection between the rotating shaft 4 and the second bracket 2. The operation of disassembling the rotating shaft 4 and the second bracket 2 is just the opposite. First, remove the screw 7, and then manually rotate the first rotating nested part 40 by 90° so that the first rotating nested part 40 can be removed from the insertion channel 202.

[0024] The first right-angled boss 2031 and the second right-angled boss 2032 are used not only to realize the rotational limit of the first rotating nested part 40, but also to position the rotational position of the first rotating nested part 40, enabling the worker to quickly rotate the first rotating nested part 40 in place when installing / dismounting.

[0025] In other embodiments, only screws can be used to connect the rotating shaft 4 and the second bracket 2, without setting the first rotating nested part 40 and the second rotating nested part 20. However, the inventor found in actual applications that since the second bracket 2 is in an environment of frequent swinging and vibration, the connection stability and strength of simply using only screws to connect the rotating shaft 4 and the second bracket 2 are insufficient, and the screws are prone to loosening or even directly breaking. In this embodiment, the first rotating nested part 40 and the second rotating nested part 20 are further provided, so that the rotating shaft 4 and the second bracket 2 form a nested connection relationship, improving the connection stability and strength between the rotating shaft 4 and the second bracket 2.

[0026] Another advantage of adopting the above-mentioned structures of the first rotating nested part 40 and the second rotating nested part 20 is that it is convenient for the disassembly and assembly of the rotating shaft 4 and the second bracket 2. On the basis of the detachable threaded connection between the rotating shaft 4 and the second bracket 2, the connection between the first rotating nested part 40 and the second rotating nested part 20 also has good detachability, that is: through the setting of the first rotating nested part 40 and the second rotating nested part 20 in this embodiment, not only can the rotating shaft 4 and the second bracket 2 form a more stable nested connection relationship, but also the convenience of disassembly and assembly of the rotating shaft 4 and the second bracket 2 will not be affected due to this nested connection relationship. During installation, just align the insertion channel 202 and insert the rotating shaft 4, and then rotate the rotating shaft 4 to quickly realize the anti-loosening limit and nested connection between the rotating shaft 4 and the second bracket 2; during disassembly, after removing the screw 7, just rotate the rotating shaft 4 to move it out of the insertion channel 202 to quickly realize the removal of the rotating shaft 4 and the components such as the housing 3 and the first bracket 1 connected to it as a whole, facilitating the maintenance of the camera.

[0027] The position of the screw 7 is preferably set near the first right-angled boss 2031 and the second right-angled boss 2032 to make full use of the local space protruding from the first right-angled boss 2031 and the second right-angled boss 2032.

[0028] In addition, although the present invention is specifically shown and described in combination with the preferred embodiments, those skilled in the art should understand that various changes made to the present invention in form and detail without departing from the spirit and scope of the present invention defined by the appended claims all fall within the protection scope of the present invention.

Claims

1. A swing damping stabilizer, characterized in that: It includes a first bracket, a second bracket, a housing and a rotating shaft. The first bracket is fixedly connected to the housing, the second bracket is fixedly connected to the rotating shaft, the rotating shaft is rotatably connected to the housing through a bearing. The first bracket is used for installing a monitoring camera, the second bracket is used for being fixedly installed on a hoisting machine, and a rotary damper is further arranged on the rotating shaft to generate damping for the rotation of the rotating shaft. First rotating nested parts are arranged at both axial ends of the rotating shaft. The second bracket has a "U" - shaped structure. Second rotating nested parts are arranged at both ends of the second bracket at positions corresponding to the rotating shaft. The first rotating nested part is in the shape of a strip - shaped protrusion. The second rotating nested part includes a rotating limiting hole and an insertion channel. The inner end of the insertion channel is connected to the rotating limiting hole, and the outer end of the insertion channel extends to the edge of the second bracket. In the rotating limiting hole, a first right - angled boss and a second right - angled boss are arranged in a paired manner, and the first right - angled boss and the second right - angled boss are distributed on both sides of the extension path of the insertion channel. The first right - angled boss and the second right - angled boss divide the rotating limiting hole into a first sector - shaped limiting hole and a second sector - shaped limiting hole. The first rotating nested part is configured to be inserted into the rotating limiting hole along the insertion channel, and both ends of the first rotating nested part can rotate in the first sector - shaped limiting hole and the second sector - shaped limiting hole respectively. The rotating shaft and the second bracket are also fixed by threaded connection.

2. The swing damping stabilizer according to claim 1, characterized in that: The housing is a hollow cylindrical structure. A first bearing, a second bearing and a third bearing are fixedly arranged in the housing. The first bearing and the second bearing are arranged on the left half - section of the rotating shaft, and the rotary damper and the third bearing are arranged on the right half - section of the rotating shaft.

3. The swing damping stabilizer according to claim 2, characterized in that: A first inner cavity and a second inner cavity are arranged in the housing. The outer rings of the first bearing and the second bearing are fixed in the first inner cavity, and the outer ring of the third bearing is fixed in the second inner cavity. The rotating shaft passes through the housing and is fixed to the inner rings of the first bearing, the second bearing and the third bearing. The rotary damper includes a housing and a rotating part. The rotating part can rotate relative to the housing, and the rotating part is configured to have rotational damping. The housing is fixedly connected to the second inner cavity, and the rotating part is connected to the shaft hub of the rotating shaft.

4. The swing damping stabilizer according to claim 3, characterized in that: The rotating shaft includes a first shaft section at the head end and a second shaft section at the tail end. The first shaft section and the second shaft section are coaxially connected through a coupling.

5. The swing damping stabilizer according to claim 1, characterized in that: Both end parts of the length of the first rotating nested part are set to be arc - shaped.

6. The swing damping stabilizer according to claim 1, wherein: At least two threaded holes are arranged on the axial end face of the rotating shaft, and through holes are arranged on the second bracket at positions corresponding to each threaded hole. Screws pass through the through holes and are screwed into the threaded holes.

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