Crane rotation monitoring device and crane

Abstract

The invention provides a crane rotation monitoring device and a crane, and relates to the technical field of cranes. The device comprises a rotary encoder which comprises a shell and a detection piece; the mounting seat is connected with the shell; and the connecting assembly comprises a first connecting piece, a second connecting piece and a third connecting piece, the first connecting piece is connected with the detection piece, the first connecting piece is hinged to the second connecting piece, and the second connecting piece is hinged to the third connecting piece. The shell and the rotating part rotate synchronously, but part of the detecting pieces are pulled by the connecting assembly so that a relative angle can be formed between the part of the detecting pieces and the detecting pieces connected with the shell, and the relative angle is the rotating angle of the rotating part. The second connecting piece compensates the angle deviation between the rotating part and the rotary center shaft in a double-hinge connection mode, it is guaranteed that the first connecting piece and the third connecting piece always keep coaxial rotation, and the problem that the detection angle of the rotary encoder is inconsistent with the actual rotary angle of the crane due to installation errors is solved.

Description

Technical Field

[0001] This application relates to the field of crane technology, and in particular to a crane rotation monitoring device and a crane. Background Technology

[0002] In railway hub stations, cranes need to frequently rotate 360° to complete the lifting operations of goods in multiple directions. During the crane rotation process, a rotation monitoring device is needed to detect the rotation angle of the crane to ensure the safety of the crane in the lifting operation.

[0003] In the prior art, the rotation monitoring device includes an encoder and a coupling. The encoder shaft is directly fixed to the output shaft of the rotary motor or reducer through a rigid coupling. The rotary motor directly drives the rotating part of the crane to rotate. At this time, the rotary motor also drives the coupling to rotate, which in turn drives the encoder shaft to rotate. The encoder directly measures the rotation angle of the motor, and then calculates the rotation angle of the rotating part through the reduction ratio, which is an indirect measurement.

[0004] However, installation misalignment between the coupling and the encoder can cause the encoder detection angle to be inconsistent with the actual rotation angle of the crane. Summary of the Invention

[0005] This application provides a crane rotation monitoring device and a crane to solve the problem of inconsistency between the detection angle and the actual rotation angle of the crane.

[0006] On one hand, this application provides a crane slewing monitoring device, comprising:

[0007] A rotary encoder, comprising a housing and a detection element, wherein a portion of the detection element is disposed within the housing and the detection element is connected to the housing;

[0008] Mounting base, the mounting base is connected to the detection element, and the mounting base is used to connect to the rotating part;

[0009] A connecting assembly, comprising a first connector, a second connector, and a third connector, wherein the first connector is connected to the detection element, the first connector is hinged to the second connector, the second connector is hinged to the third connector, and the third connector is used to connect to the rotation center shaft.

[0010] In one possible implementation, the crane slewing monitoring device provided in this application further includes a first hinge member, wherein the first connecting member and the second connecting member are hinged together by the first hinge member, and the first connecting member moves relative to the first hinge member under the drive of the detection member;

[0011] It also includes a second hinge member, the second connecting member and the third connecting member are hinged together by the second hinge member, and the second connecting member moves relative to the second hinge member under the action of the first connecting member.

[0012] In one possible implementation, the crane rotation monitoring device provided in this application has a first mounting hole on the first connecting member, a second mounting hole on the second connecting member, and the first hinge member inserted into the first mounting hole and the second mounting hole.

[0013] The second connector is provided with a third mounting hole, and the third connector is provided with a fourth mounting hole. The second hinge is inserted into the third mounting hole and the fourth mounting hole.

[0014] In one possible implementation, the crane rotation monitoring device provided in this application further includes a first mounting portion on the second connecting member, a second mounting hole on the first mounting portion, the first connecting member being hinged to the first mounting portion, and the first connecting member moving relative to the first hinge member on the first mounting portion under the drive of the detection member.

[0015] The second connector is further provided with a second mounting part, and the third mounting hole is provided on the second mounting part. The third connector is hinged to the second mounting part, and the second connector moves relative to the second hinge under the drive of the first connector.

[0016] In one possible implementation, the crane rotation monitoring device provided in this application has the first connecting member being a first sleeve, the second connecting member being a second sleeve, and the third connecting member being a third sleeve.

[0017] In one possible implementation, the crane slewing monitoring device provided in this application further includes a power supply component, which is disposed on the first connector and electrically connected to the slewing encoder. The power supply component is used to supply power to the slewing encoder.

[0018] In one possible implementation, the crane slewing monitoring device provided in this application includes a power supply component comprising a rotor and a stator, the stator being connected to a power source, the stator being sleeved on the rotor, the rotor being rotatable relative to the stator, and the rotor being sleeved on the first connecting member.

[0019] In one possible implementation, the crane slewing monitoring device provided in this application further includes a support member for connecting to the vehicle body. The support member is sleeved on the first connecting member, and the first connecting member is rotatable relative to the support member. The support member is used to install the stator.

[0020] In one possible implementation, the crane slewing monitoring device provided in this application includes a first support portion and a second support portion. The first support portion is sleeved on the first connecting member, the first connecting member is rotatable relative to the first support portion, the first support portion is connected to the second support portion, and the second support portion is connected to the stator.

[0021] On the other hand, this application provides a crane, including a car body and a crane rotation monitoring device connected to the car body.

[0022] This application provides a crane slewing monitoring device, which includes a slewing encoder, a mounting base, and a connecting assembly. The slewing encoder includes a housing and a detection component. The connecting assembly includes a first connector, a second connector, and a third connector. The housing is mounted on the mounting base and connected to the rotating part of the crane body. The detection component is partially disposed inside the housing and connected to the housing. One end of the detection component is connected to one end of the first connector. The other end of the first connector is hinged to one end of the second connector. The other end of the second connector is hinged to one end of the third connector. The other end of the third connector is hinged to the slewing center axis of the crane body, which is stationary relative to the rotating part. The rotating part rotates around the slewing center axis.

[0023] The first and second connecting members can rotate synchronously when the rotating part rotates. At the same time, the second connecting member is hinged to the first connecting member, and the second connecting member can deflect relative to the first connecting member when rotating synchronously with the first connecting member. The second connecting member and the third connecting member are hinged together, and the second connecting member can deflect relative to the third connecting member. In other words, the second connecting member can deflect relative to both the first and third connecting members.

[0024] During the rotation of the crane's rotating part, the motor of the rotating part drives the rotating part to rotate relative to the rotation center axis. The rotating part drives the housing of the rotary encoder to rotate, and the housing drives the rotation of the detection components connected to the housing. However, the detection components are connected to the connecting assembly, and the connecting assembly is connected to the rotation center axis of the car body, which is stationary relative to the rotating part. When the housing drives the rotation of some detection components, the remaining detection components are held back by the connecting assembly, resulting in a relative angle between the detection components and the detection components connected to the housing. This relative angle is the rotation angle of the rotating part. The rotary encoder can directly record this relative angle, thereby realizing the direct measurement of the rotation angle of the rotating part.

[0025] The second connector uses a double-hinged connection to achieve dual-degree-of-freedom angle alignment through its own floating mechanism. This compensates for the angular deviation between the rotating part and the rotation center axis, ensuring that the first and third connectors always rotate coaxially. This solves the problem of inconsistency between the rotation encoder detection angle and the actual rotation angle of the crane caused by installation errors. Attached Figure Description

[0026] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0027] Figure 1 This is a schematic diagram of the crane rotation monitoring device provided in this application;

[0028] Figure 2 for Figure 1 A schematic diagram of the structure of the connecting components and the mounting base.

[0029] Explanation of reference numerals in the attached figures:

[0030] 100. Rotary encoder; 110. Housing; 120. Detection component;

[0031] 200. Mounting base;

[0032] 300. Connecting component; 310. First connector; 311. First mounting hole;

[0033] 320. Second connector; 321. Second mounting hole; 322. Third mounting hole;

[0034] 323. First installation section; 324. Second installation section;

[0035] 330. Third connector; 331. Fourth mounting hole;

[0036] 400, Rotation center axis;

[0037] 500. First hinge component; 510. Second hinge component;

[0038] 600. Power supply components; 610. Rotor; 620. Stator;

[0039] 700, Support component; 710, First support part; 720, Second support part.

[0040] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0042] In the embodiments of this application, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation. Furthermore, some of the above terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this application according to the specific circumstances.

[0043] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0044] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in a sequence other than those illustrated or described herein.

[0045] In this application, the terms "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0046] Unless otherwise stated, the term "multiple" means two or more.

[0047] In railway hub stations, cranes need to frequently rotate 360° to complete the lifting operations of goods in multiple directions. During the crane rotation process, a rotation monitoring device is needed to detect the rotation angle of the crane to ensure the safety of the crane in the lifting operation.

[0048] In existing technology, rotation monitoring devices include an encoder and a coupling. The encoder shaft is directly fixed to the output shaft of a rotary motor or reducer via a rigid coupling. The rotary motor directly drives the rotating part to rotate, which in turn drives the coupling to rotate, ultimately causing the encoder shaft to rotate. The encoder directly measures the motor's rotation angle, and then calculates the rotation angle of the rotating part using the reduction ratio – this is an indirect measurement. However, the coupling is extremely sensitive to concentricity errors during installation. Installation deviations when connecting the coupling to the motor or encoder can disrupt the coaxial rotation reference between the motor, coupling, and encoder, resulting in an error between the encoder's detected angle and the crane's actual rotation angle.

[0049] This application provides a crane slewing monitoring device, which includes a slewing encoder, a mounting base, and a connecting assembly. The slewing encoder includes a housing and a detection component. The connecting assembly includes a first connector, a second connector, and a third connector. The housing is mounted on the mounting base and connected to the rotating part of the crane body. The detection component is partially disposed inside the housing and connected to the housing. One end of the detection component is connected to one end of the first connector. The other end of the first connector is hinged to one end of the second connector. The other end of the second connector is hinged to one end of the third connector. The other end of the third connector is hinged to the slewing center axis of the crane body, which is stationary relative to the rotating part. The rotating part rotates around the slewing center axis.

[0050] The first and second connecting members can rotate synchronously when the rotating part rotates. At the same time, the second connecting member is hinged to the first connecting member, and the second connecting member can deflect relative to the first connecting member when rotating synchronously with the first connecting member. The second connecting member and the third connecting member are hinged together, and the second connecting member can deflect relative to the third connecting member. In other words, the second connecting member can deflect relative to both the first and third connecting members.

[0051] During the rotation of the crane's rotating part, the motor of the rotating part drives the rotating part to rotate relative to the rotation center axis. The rotating part drives the housing of the rotary encoder to rotate, and the housing drives the rotation of the detection components connected to the housing. However, the detection components are connected to the connecting assembly, and the connecting assembly is connected to the rotation center axis of the car body, which is stationary relative to the rotating part. When the housing drives the rotation of some detection components, the remaining detection components are held back by the connecting assembly, resulting in a relative angle between the detection components and the detection components connected to the housing. This relative angle is the rotation angle of the rotating part. The rotary encoder can directly record this relative angle, thereby realizing the direct measurement of the rotation angle of the rotating part.

[0052] The second connector uses a double-hinged connection to achieve dual-degree-of-freedom angle alignment through its own floating mechanism. This compensates for the angular deviation between the rotating part and the rotary encoder, ensuring that the first and third connectors always rotate coaxially. This solves the problem of inconsistency between the rotary encoder's detection angle and the crane's actual rotation angle caused by installation errors.

[0053] The embodiments of this application are described below with reference to the accompanying drawings.

[0054] Reference Figures 1 to 2 As shown, in some embodiments, this embodiment includes a rotary encoder 100, which includes a housing 110 and a detection element 120. The detection element 120 is partially disposed inside the housing 110 and partially connected to the housing 110. A mounting base 200 is connected to the housing 110 and is used to connect with a rotating part. A connecting assembly 300 includes a first connecting member 310, a second connecting member 320, and a third connecting member 330. The first connecting member 310 is connected to the detection element 120 and is hinged to the second connecting member 320. The second connecting member 320 is hinged to the third connecting member 330, and the third connecting member 330 is used to hinge to the rotary center shaft 400.

[0055] The rotary encoder 100 is the component of this device for detecting the rotation angle of the crane. The rotary encoder 100 includes a housing 110 and a detection element 120. The detection element 120 is partially disposed inside the housing 110 and partially connected to the housing 110. In this device, a multi-turn absolute encoder can be used to achieve continuous 360° angle monitoring, power-off memory, and anti-interference, ensuring hoisting safety and operational accuracy.

[0056] The mounting base 200 can be a wooden board structure or a mounting platform made of the same material as the rotating part of the crane. It is used to mount the rotary encoder 100. As an independent rigid mounting reference, the mounting base 200 not only ensures that it does not deform under load, but also provides stable mounting support for the rotary encoder 100, preventing the rotary encoder 100 from failing in accuracy due to deformation of the mounting surface.

[0057] In this device, the connecting component 300 can be designed in segments. The connecting component 300 includes a first connecting member 310, a second connecting member 320 and a third connecting member 330. The first connecting member 310 is connected to the detection member 120 and rotates with the detection member 120. The first connecting member 310 can be made of alloy structural steel. The second connecting member 320 can be made of elastic alloy. The third connecting member 330 is stationary relative to the second connecting member 320. The third connecting member 330 can be made of carbon structural steel.

[0058] The first connecting member 310 is the power transmission section, the second connecting member 320 is the buffer and vibration isolation section, and the third connecting member 330 is the static connection section. The first connecting member 310 is hinged to the second connecting member 320, and the second connecting member 320 is hinged to the third connecting member 330. During the rotation of the crane, the second connecting member 320 can move relative to the first connecting member 310 and the third connecting member 330. The second connecting member 320 can achieve two degrees of freedom angle self-alignment through its own floating, compensate for the angular deviation between the rotating part and the rotation center axis 400, and ensure that the first connecting member 310 and the third connecting member 330 always maintain coaxial rotation.

[0059] The connecting component 300 of this device adopts a segmented design. When transmitting angular displacement, the floating centering of the second connecting component 320 ensures that the angle measurement is lag-free and without deviation, so that the angular measurement accuracy of the rotary encoder 100 is stable and the monitoring deviation caused by mechanical error is eliminated.

[0060] In a specific implementation, the housing 110 of the rotary encoder 100 is placed on the mounting base 200, which is connected to the rotating part of the vehicle body. The detection element 120 is connected to one end of the first connecting member 310 along its length. The other end of the first connecting member 310 is hinged to one end of the second connecting member 320. The other end of the second connecting member 320 is hinged to one end of the third connecting member 330. The other end of the third connecting member 330 is hinged to the rotation center shaft 400 in the vehicle body, which is relatively stationary when the crane rotates. This is equivalent to the rotating part rotating around the rotation center shaft 400. The rotary encoder 100 measures the angle of rotation of the rotating part relative to the rotation center shaft 400. At this time, the rotation angle recorded by the rotary encoder 100 is equivalent to the rotation angle of the rotating part, which is a direct measurement.

[0061] The first connecting member 310 and the second connecting member 320 can rotate synchronously when the rotating part of the crane rotates. At the same time, the second connecting member 320 is hinged to the first connecting member 310, and the second connecting member 320 can deflect relative to the first connecting member 310 when rotating synchronously with the first connecting member 310. The second connecting member 320 and the third connecting member 330 are hinged, and the second connecting member 320 can deflect relative to the third connecting member 330. That is to say, the second connecting member 320 can deflect relative to both the first connecting member 310 and the third connecting member 330.

[0062] During the rotation of the crane's rotating part, the motor of the rotating part drives the rotating part to rotate relative to the rotation center shaft 400. The rotating part drives the housing 110 of the rotary encoder 100 to rotate. The housing 110 drives the part of the detection element 120 connected to the housing 110 to rotate. However, the detection element 120 is connected to the connecting assembly 300, and the connecting assembly 300 is connected to the rotation center shaft 400 of the car body which is stationary relative to the rotating part. When the housing 110 drives part of the detection element 120 to rotate, the remaining detection elements 120 are held back by the connecting assembly 300, so that a relative angle appears between part of the detection element 120 and the part of the detection element 120 connected to the housing 110. At this time, this relative angle is the rotation angle of the rotating part. The rotary encoder 100 can directly record this relative angle, thereby realizing the direct measurement of the rotation angle of the rotating part.

[0063] The second connector 320 uses a double-hinged connection to achieve dual-degree-of-freedom angle alignment through its own floating mechanism. This compensates for the angular deviation between the rotating part and the rotation center axis 400, ensuring that the first connector 310 and the third connector 330 always rotate coaxially. This solves the problem of inconsistency between the detection angle of the rotary encoder 100 and the actual rotation angle of the crane caused by installation errors.

[0064] Reference Figure 2 As shown, in some embodiments, this embodiment further includes a first hinge member 500, through which the first connecting member 310 and the second connecting member 320 are hinged, and the first connecting member 310 moves relative to the first hinge member 500 under the drive of the detection member 120; the device further includes a second hinge member 510, through which the second connecting member 320 and the third connecting member 330 are hinged, and the second connecting member 320 moves relative to the second hinge member 510 under the drive of the first connecting member 310.

[0065] In this embodiment, in order to achieve the hinge connection between the first connector 310 and the second connector 320, this embodiment also includes a first hinge member 500. The first hinge member 500 can be a hinge pin. The first hinge member 500 is used to hinge the first connector 310 and the second connector 320, so that the first connector 310 can be offset relative to the second connector 320. That is to say, the first connector 310 can move in the axial direction of the first hinge member 500 under the drive of the detection member 120, thereby realizing the angular displacement transmission while compensating for the installation coaxiality error and reducing the precision calibration requirements for on-site installation.

[0066] The device also includes a second hinge 510, which can also be a hinge pin. The second hinge 510 is used to hinge the second connector 320 and the third connector 330, so that the second connector 320 can be offset relative to the third connector 330. In other words, the second connector 320 can move in the axial direction of the second hinge 510 under the drive of the first connector 310, realizing angular displacement transmission while having dual-degree-of-freedom angle self-alignment, compensating for the angular sway deviation between the rotating part and the rotary encoder 100, and ensuring that the detection angle of the rotary encoder 100 is consistent with the rotation angle of the crane.

[0067] Reference Figure 2 As shown, in some embodiments, the first connector 310 is further provided with a first mounting hole 311, the second connector 320 is provided with a second mounting hole 321, and the first hinge 500 is inserted into the first mounting hole 311 and the second mounting hole 321; the second connector 320 is provided with a third mounting hole 322, the third connector 330 is provided with a fourth mounting hole 331, and the second hinge 510 is inserted into the third mounting hole 322 and the fourth mounting hole 331.

[0068] In a specific implementation, a first mounting hole 311 is provided at the end of the first connector 310 facing away from the detection member 120. The first mounting hole 311 can be a through hole adapted to the first hinge member 500. A second mounting hole 321 is provided at one end of the length of the second connector 320. The second mounting hole 321 can be a through hole adapted to the first hinge member 500. After aligning the first mounting hole 311 and the second mounting hole 321, the first hinge member 500 is passed through the second mounting hole 321 and the first mounting hole 311 in sequence, or through the first mounting hole 311 and the second mounting hole 321 in sequence, so as to insert the first hinge member 500 into the first mounting hole 311 and the second mounting hole 321 to realize the hinge between the first connector 310 and the second connector 320. The first mounting hole 311 and the second mounting hole 321 provide a precise installation and rotation reference for the first hinge member 500 and constrain the movement trajectory of the hinge pair.

[0069] Meanwhile, the end of the second connector 320 facing away from the first connector 310 is also provided with a third mounting hole 322. The third mounting hole 322 can be a through hole adapted to the second hinge 510. The end of the third connector 330 in the length direction is provided with a fourth mounting hole 331. The fourth mounting hole 331 can be a through hole adapted to the second hinge 510. After aligning the third mounting hole 322 and the fourth mounting hole 331, the second hinge 510 is passed through the fourth mounting hole 331 and the third mounting hole 322 in sequence, or through the third mounting hole 322 and the fourth mounting hole 331 in sequence, so as to insert the second hinge 510 into the third mounting hole 322 and the fourth mounting hole 331, so as to realize the hinge between the second connector 320 and the third connector 330. The third mounting hole 322 and the fourth mounting hole 331 provide a precise installation and rotation reference for the second hinge 510, and constrain the movement trajectory of the hinge pair.

[0070] Reference Figure 1 As shown, in some embodiments, the second connector 320 is further provided with a first mounting portion 323, a second mounting hole 321 is provided on the first mounting portion 323, the first connector 310 is hinged to the first mounting portion 323, and the first connector 310 moves relative to the first hinge member 500 on the first mounting portion 323 under the drive of the detection member 120; the second connector 320 is further provided with a second mounting portion 324, a third mounting hole 322 is provided on the second mounting portion 324, the third connector 330 is hinged to the second mounting portion 324, and the second connector 320 moves relative to the second hinge member 510 under the drive of the first connector 310.

[0071] In this embodiment, the second connector 320 is further provided with a first mounting portion 323 and a second mounting portion 324. A second mounting hole 321 is provided on the first mounting portion 323, and a third mounting hole 322 is provided on the second mounting portion 324. Both the first mounting portion 323 and the second mounting portion 324 can be integrally formed with the second connector 320. The first mounting portion 323 is hinged to the first connector 310, and the second mounting portion 324 is hinged to the third connector 330. That is, the first hinge member 500 is inserted into the first mounting hole 311 and the second mounting hole 321 on the first mounting portion 323, and the second hinge member 510 is inserted into the fourth mounting hole 331 and the third mounting hole 322 on the second mounting portion 324. The first mounting portion 323 and the second mounting portion 324 strengthen the local structural rigidity of the hinge part, prevent deformation failure at the hinge, and disperse the overall load, thereby avoiding stress concentration in the body of the second connector 320.

[0072] Reference Figure 1 and Figure 2 As shown, in some embodiments, the first connector 310 is a first sleeve, the second connector 320 is a second sleeve, and the third connector 330 is a third sleeve.

[0073] In practical implementation, the first connector 310, the second connector 320, and the third connector 330 can all be tubular structures. The first connector 310 is adapted to the circumference of the output shaft of the detection component 120. The third connector 330 can be a sleeve of the same size as the first connector 310. The second connector 320 can be a sleeve with a larger circumference than the first connector 310. The second connector 320 is offset outside the first connector 310 and the third connector 330. The hinged connection of the three sleeves ensures the long-term stability of the angle measurement accuracy and completely eliminates the monitoring deviation caused by the deformation of the connecting component 300. At the same time, the hollow structure of the sleeve has good buffering and vibration isolation performance, reducing vibration transmission.

[0074] Reference Figure 1 As shown, in some embodiments, this embodiment also includes a power supply component 600, which is disposed on the first connector 310 and electrically connected to the rotary encoder 100. The power supply component 600 is used to supply power to the rotary encoder 100.

[0075] In practical implementation, in order to power the rotary encoder 100 and prevent the device from getting tangled in wires during rotation, the device is also equipped with a power supply component 600. The power supply component 600 is mounted on the first connector 310 and is electrically connected to the rotary encoder 100. The power supply component 600 supplies power to the rotary encoder 100 via the first connector 310. The cable connecting the power supply component 600 to the rotary encoder 100 is relatively short and can rotate with the rotation of the first connector 310, thus avoiding cable tangling during rotation.

[0076] Reference Figure 1 As shown, in some embodiments, the power supply unit 600 includes a rotor 610 and a stator 620. The stator 620 is used to connect to the power supply. The stator 620 is sleeved on the rotor 610. The rotor 610 can rotate relative to the stator 620. The rotor 610 is sleeved on the first connecting member 310. The first connecting member 310 drives the rotating shaft 120 to rotate under the drive of the rotor 610.

[0077] In a specific implementation, the power supply component 600 includes a rotor 610 and a stator 620. The stator 620 is used to connect to an external power source to supply power to the power supply component 600. The stator 620 can be an outer ring structure and can include contact brushes and an outer annular housing. The rotor 610 can be an inner shaft structure with a core conductive ring inside the shaft. The stator 620 is sleeved on the rotor 610, allowing the contact brushes to contact the conductive ring. The rotor 610 is sleeved on the first connecting member 310. The first connecting member 310 drives the rotating shaft 120 to rotate under the drive of the rotor 610. The layout presents a nested structure with a small radial space occupation.

[0078] Reference Figure 1 and Figure 2 As shown, in some embodiments, this embodiment also includes a support member 700, which is used to connect with the vehicle body. The support member 700 is sleeved on the first connector 310, which is rotatable relative to the support member 700. The support member 700 is used to install the stator 620.

[0079] In this embodiment, in order to fix the power supply component 600 on the first connector 310, this embodiment also includes a support component 700. The support component 700 is used to connect with the relatively stationary car body when the crane rotates. The stator 620 is placed on the support component 700. That is to say, the support component 700 is a ring structure that matches the circumference of the first connector 310. The support component 700 is sleeved on the first connector 310, but does not rotate with the first connector 310. The stator 620 is placed on the support component 700, and the stator 620 does not rotate with the first connector 310. The support component 700 provides a static rigid mounting reference for the power supply component 600, ensuring that the rotor 610 and the output shaft of the detection component 120 of the rotary encoder 100 are strictly coaxial, realizing that the rotary encoder 100 cable is fully built-in and tangle-free, improving the cable protection level.

[0080] Reference Figure 2 As shown, in some embodiments, the support member 700 includes a first support portion 710 and a second support portion. The first support portion 710 is sleeved on the first connector 310. The first connector 310 is rotatable relative to the first support portion 710. The first support portion 710 is connected to the second support portion, and the second support portion is connected to the stator 620.

[0081] In this embodiment, the support member 700 includes a first support portion 710 and a second support portion. The first support portion 710 and the second support portion can be integrally formed. The first support portion 710 is sleeved on the first connector 310. The first support portion 710 can be an annular sleeve structure. The first connector 310 can rotate relative to the first support portion 710. The second support portion is connected to the stator 620. The second support portion can be a flange or boss structure. The stator 620 is not deformed under load, which extends the service life of the power supply component 600.

[0082] The crane provided in this embodiment includes a vehicle body and a crane rotation monitoring device connected to the vehicle body.

[0083] The structure and working principle of the crane slewing monitoring device have been described in detail in the above embodiments, and will not be repeated here.

[0084] The technical solutions of this application have been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it is readily understood by those skilled in the art that the scope of protection of this application is obviously not limited to these specific embodiments. The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A crane slewing monitoring device, characterized in that, include: A rotary encoder (100) includes a housing (110) and a detection element (120), a portion of the detection element (120) being disposed within the housing (110) and connected to the housing (110); Mounting base (200), the mounting base (200) is connected to the housing (110), the mounting base (200) is used to connect to the rotating part of the vehicle body; A connecting assembly (300) includes a first connector (310), a second connector (320), and a third connector (330). The first connector (310) is connected to the detection element (120), the first connector (310) is hinged to the second connector (320), the second connector (320) is hinged to the third connector (330), and the third connector (330) is used to hinge to the rotation center shaft (400).

2. The crane rotation monitoring device according to claim 1, characterized in that, It also includes a first hinge (500), the first connecting member (310) and the second connecting member (320) are hinged through the first hinge (500), and the first connecting member (310) moves relative to the first hinge (500) under the drive of the detection member (120); It also includes a second hinge (510), the second connector (320) and the third connector (330) are hinged together by the second hinge (510), and the second connector (320) moves relative to the second hinge (510) under the drive of the first connector (310).

3. The crane slewing monitoring device according to claim 2, characterized in that, The first connector (310) is also provided with a first mounting hole (311), and the second connector (320) is provided with a second mounting hole (321). The first hinge (500) is inserted into the first mounting hole (311) and the second mounting hole (321). The second connector (320) is provided with a third mounting hole (322), and the third connector (330) is provided with a fourth mounting hole (331). The second hinge (510) is inserted into the third mounting hole (322) and the fourth mounting hole (331).

4. The crane slewing monitoring device according to claim 3, characterized in that, The second connector (320) is also provided with a first mounting part (323), and the second mounting hole (321) is provided on the first mounting part (323). The first connector (310) is hinged to the first mounting part (323). The first connector (310) moves relative to the first hinge member (500) on the first mounting part (323) under the drive of the detection member (120). The second connector (320) is also provided with a second mounting part (324), the third mounting hole (322) is provided on the second mounting part (324), the third connector (330) is hinged to the second mounting part (324), and the second connector (320) moves relative to the second hinge (510) under the drive of the first connector (310).

5. The crane slewing monitoring device according to claim 4, characterized in that, The first connector (310) is the first sleeve, the second connector (320) is the second sleeve, and the third connector (330) is the third sleeve.

6. The crane slewing monitoring device according to any one of claims 1-5, characterized in that, It also includes a power supply component (600), which is disposed on the first connector (310) and is electrically connected to the rotary encoder (100). The power supply component (600) is used to supply power to the rotary encoder (100).

7. The crane slewing monitoring device according to claim 6, characterized in that, The power supply component (600) includes a rotor (610) and a stator (620). The stator (620) is used to connect to a power source. The stator (620) is sleeved on the rotor (610). The rotor (610) is rotatable relative to the stator (620). The rotor (610) is sleeved on the first connecting member (310).

8. The crane slewing monitoring device according to claim 7, characterized in that, It also includes a support member (700) for connecting to the vehicle body, the support member (700) being sleeved on the first connector (310), the first connector (310) being rotatable relative to the support member (700), and the support member (700) for mounting the stator (620).

9. The crane slewing monitoring device according to claim 8, characterized in that, The support member (700) includes a first support portion (710) and a second support portion (720). The first support portion (710) is sleeved on the first connector (310). The first connector (310) is rotatable relative to the first support portion (710). The first support portion (710) is connected to the second support portion (720), and the second support portion (720) is connected to the stator (620).

10. A crane, characterized in that, Includes the vehicle body and the crane slewing monitoring device as described in any one of claims 1 to 9 connected to the vehicle body.

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