A safety control method and control system for a double-planetary mixer

Abstract

The application discloses a double-planet mixer safety control method and a control system, and relates to the technical field of mixers. The safety control method adopts a motion state detection mode to accurately determine whether a lifting mechanism is in a lifting-in-place state, and also adopts an oil pressure state detection mode to accurately determine whether the lifting mechanism has a falling condition, thereby providing a basis for safety control and guaranteeing safe operation of the equipment. Furthermore, at least two different detection modes are adopted to detect the motion state of the lifting mechanism. Compared with a single detection mode, the safety control is prevented from being invalid when the single detection mode is abnormal, and the safe operation of the mixer is further guaranteed. Furthermore, the motion state detection and the oil pressure state detection are combined to serve as a basis for locking or unlocking the lifting mechanism, a good closed-loop control can be formed, automatic locking is realized, and compared with a traditional manual placement of a scapegoat component, the method is more convenient and safer.

Description

Technical Field

[0001] This application relates to the field of mixer technology, and in particular to a safety control method and control system for a dual planetary mixer. Background Technology

[0002] Double planetary mixers are also cantilever mixers. Their mixing tank is mounted on a lifting mechanism, which controls its lifting and lowering movement, allowing the mixer to extend into or retract from the tank. Currently, most double planetary mixers on the market use open-loop control for the lifting mechanism, making it impossible to detect whether the mechanism is operating normally or in the correct position, thus compromising the safe operation of the equipment. Furthermore, after the mixing tank is in position, a scapegoat assembly (a single, unsupported column) needs to be manually placed in a designated position to lock the lifting mechanism and prevent the tank from falling. However, this method fails to prevent falls during the lifting mechanism's operation, and the scapegoat assembly requires manual operation, which is cumbersome and poses certain safety risks. Summary of the Invention

[0003] In view of this, the purpose of this application is to provide a safety control method and control system for a dual planetary mixer, so as to solve the technical problem that the safety operation of existing dual planetary mixers cannot be well guaranteed.

[0004] To achieve the above technical objectives, this application provides a safety control method for a dual planetary mixer, comprising the following steps:

[0005] Obtain the motion status of the lifting mechanism under at least two different detection methods;

[0006] Obtain the hydraulic pressure status of the lifting mechanism;

[0007] When at least one of the acquired action states is in the lifted position and the acquired hydraulic pressure state is in the normal hydraulic pressure state, or when the acquired hydraulic pressure state is in the abnormal hydraulic pressure state, the lifting mechanism is locked.

[0008] This application also discloses a control system applied to the above-mentioned safety control method for a dual planetary mixer, including:

[0009] The system comprises a first detection module, a second detection module, and a mechanical lock module.

[0010] The first detection module includes at least two first detection components with different detection methods;

[0011] The first detection component is used to acquire the action status of the lifting mechanism;

[0012] The second detection module includes a second detection component;

[0013] The second detection component is used to obtain the hydraulic pressure status of the lifting mechanism;

[0014] The mechanical lock module is electrically connected to the first detection module and the second detection module, and is used to lock the lifting mechanism when at least one of the detection components detects that the lifting mechanism is in the lifting position and the second detection module detects that the hydraulic pressure of the lifting mechanism is normal, or when the second detection module detects that the hydraulic pressure of the lifting mechanism is abnormal.

[0015] Furthermore, the first detection module, the second detection module, and the mechanical lock module are connected in series to form a safety loop;

[0016] The mechanical lock module is used to lock the lifting mechanism when the safety circuit is closed or to lock the lifting mechanism when the safety circuit is open.

[0017] Furthermore, the first detection module includes first detection components with two different detection methods;

[0018] One of the first detection components includes a first upper sensor and a first lower sensor;

[0019] Another of the first detection components includes a second upper sensor and a second lower sensor;

[0020] The first upper sensor and the first lower sensor are connected in series to form a first series module, and the second upper sensor and the second lower sensor are connected in series to form a second series module connected in parallel with the first series module; or

[0021] The first upper sensor and the second upper sensor are connected in parallel to form a first parallel module, and the first lower sensor and the second lower sensor are connected in parallel to form a second parallel module connected in series with the first parallel module.

[0022] Furthermore, the first detection module includes first detection components with two different detection methods;

[0023] One of the first detection components includes a first upper sensor and a first lower sensor;

[0024] Another of the first detection components includes a second upper sensor or a second lower sensor;

[0025] The first upper sensor and the first lower sensor are connected in series to form a first series module, and the second upper sensor or the second lower sensor is connected in parallel with the first series module.

[0026] Furthermore, the second detection component includes an oil pressure detection switch.

[0027] Furthermore, it also includes an emergency stop switch;

[0028] The emergency stop switch is connected in the safety circuit and is used to control the opening and closing of the safety circuit.

[0029] Furthermore, it also includes a backup power module;

[0030] The backup power module is connected to the mechanical lock module and is used to supply electrical energy to the mechanical lock module when the main power is disconnected, so that the mechanical lock module can lock the lifting mechanism.

[0031] Furthermore, the mechanical lock module includes a fixing component, a locking component, and a driving mechanism;

[0032] The fastener is vertically arranged and has multiple slots spaced apart along the vertical direction;

[0033] The drive mechanism is mounted on the movable plate of the lifting mechanism and connected to the card;

[0034] The drive mechanism is used to drive the card into the card slot to lock the lifting mechanism, and also to drive the card out of the card slot to unlock the lifting mechanism.

[0035] Furthermore, the card includes a magnetic suction part and a card receiving part;

[0036] One end of the magnetic suction part and one end of the snap-fit ​​part are connected at an included angle;

[0037] The card is rotatably mounted on the movable plate;

[0038] The driving mechanism includes an electromagnetic component and an elastic component;

[0039] One end of the elastic element is connected to the movable plate, and the other end is connected to the locking element;

[0040] The electromagnetic component is fixed to the movable plate;

[0041] The electromagnetic component is used to generate an electromagnetic field that attracts the magnetic suction part when energized, so that the locking part overcomes the elastic force of the elastic component and rotates out of the slot; or

[0042] The electromagnetic component (4) is used to generate an electromagnetic field that attracts the magnetic suction part (21) when energized, so that the snap-fit ​​part (22) overcomes the elastic force of the elastic component (3) and rotates into the slot (11).

[0043] As can be seen from the above technical solutions, the safety control method for the dual planetary mixer designed in this application uses an action status detection method to accurately determine whether the lifting mechanism is in the lifting position, while a hydraulic pressure status detection method can accurately determine whether the lifting mechanism is falling, thus providing a basis for safety control and ensuring the safe operation of the equipment. Furthermore, using at least two different detection methods to detect the action status of the lifting mechanism, compared to a single detection method, can avoid safety control failure due to abnormalities in a single detection method, further ensuring the safe operation of the mixer. Moreover, combining action status detection and hydraulic pressure status detection as the basis for locking or unlocking the lifting mechanism forms a good closed-loop control, achieving automatic locking, which is more convenient and safer than the traditional method of manually placing scapegoat components. Attached Figure Description

[0044] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0045] Figure 1 This is a flowchart of a safety control method for a dual planetary mixer provided in this application;

[0046] Figure 2 This is a schematic diagram of the first safety circuit of a dual planetary mixer safety control system provided in this application;

[0047] Figure 3 This is a schematic diagram of the second safety loop of a dual planetary mixer safety control system provided in this application;

[0048] Figure 4 This is a schematic diagram of the third safety loop of a dual planetary mixer safety control system provided in this application;

[0049] Figure 5 This is a schematic diagram of the structure of a safety control system for a dual planetary mixer provided in this application applied to the lifting mechanism;

[0050] Figure 6 for Figure 5 Enlarged diagram of position A in the diagram;

[0051] In the diagram: 100, Lifting mechanism; 101, Movable plate; 200, Mixing tank; 300, Mechanical lock module; 400, First detection module; 401, First upper sensor; 402, First lower sensor; 403, Second upper sensor; 404, Second lower sensor; 500, Second detection module; 501, Hydraulic pressure detection switch; 600, Emergency stop switch; 700, Backup power module; 1, Fixing component; 11, Slot; 2, Clip; 21, Magnetic suction part; 22, Snap-fit ​​part; 3, Elastic component; 31, Elastic mounting base; 4, Electromagnetic component; 41, Magnetic suction mounting base. Detailed Implementation

[0052] The technical solutions of the embodiments 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 the embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the embodiments of this application.

[0053] In the description of the embodiments of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0054] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a replaceable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0055] This application discloses a safety control method for a dual planetary mixer.

[0056] Please see Figure 1 One embodiment of a safety control method for a dual planetary mixer provided in this application includes:

[0057] step:

[0058] S1, obtain the motion state of the lifting mechanism under at least two different detection methods. It should be noted that using two or more different detection methods for motion state detection will result in more than two motion state results.

[0059] S2, obtain the hydraulic pressure status of the lifting mechanism. It should be noted that this means obtaining the rate of change of hydraulic pressure or the change of hydraulic flow in the lifting mechanism.

[0060] S3 When at least one of the acquired action states is in the lifted position and the acquired hydraulic pressure state is in the normal hydraulic pressure state, or when the acquired hydraulic pressure state is in the abnormal hydraulic pressure state, the lifting mechanism is locked.

[0061] As can be seen from the above technical solutions, the safety control method for the dual planetary mixer designed in this application uses an action status detection method to accurately determine whether the lifting mechanism is in the lifting position, while a hydraulic pressure status detection method can accurately determine whether the lifting mechanism is falling, thus providing a basis for safety control and ensuring the safe operation of the equipment. Furthermore, using at least two different detection methods to detect the action status of the lifting mechanism, compared to a single detection method, can avoid safety control failure due to abnormalities in a single detection method, further ensuring the safe operation of the mixer. Moreover, combining action status detection and hydraulic pressure status detection as the basis for locking or unlocking the lifting mechanism forms a good closed-loop control, achieving automatic locking, which is more convenient and safer than the traditional method of manually placing scapegoat components.

[0062] like Figures 2 to 6 As shown, this application also discloses a control system applied to the above-mentioned safety control method for a dual planetary mixer, including:

[0063] The system comprises a first detection module 400, a second detection module 500, and a mechanical lock module 300.

[0064] The first detection module 400 includes a first detection component with at least two different detection methods. The first detection component is used to obtain the operating state of the lifting mechanism 100 and to perform the above step S1 to obtain the operating state of the lifting mechanism 100 under at least two different detection methods.

[0065] The second detection module 500 includes a second detection component; the second detection component is used to perform the above step S2 to obtain the oil pressure status of the lifting mechanism 100.

[0066] The mechanical lock module 300 is electrically connected to the first detection module 400 and the second detection module 500, and is used to perform the above step S3. When at least one detection component detects that the lifting mechanism 100 is in the lifting position and the second detection module 500 detects that the hydraulic pressure of the lifting mechanism 100 is normal, or when the second detection module 500 detects that the hydraulic pressure of the lifting mechanism 100 is abnormal, the lifting mechanism 100 is locked.

[0067] Furthermore, such as Figures 2 to 4 As shown, the first detection module 400, the second detection module 500, and the mechanical lock module 300 are connected in series to form a safety loop, realizing closed-loop control.

[0068] The mechanical lock module 300 is used to lock the lifting mechanism 100 when the safety circuit is closed and conducting, or to lock the lifting mechanism 100 when the safety circuit is open. In other words, the mechanical lock module 300 can lock the lifting mechanism 100 when the safety circuit is closed and conducting; or, the mechanical lock module 300 can lock the lifting mechanism 100 when the safety circuit is open. This achieves safety fall prevention control through circuit switching, making control simpler and more convenient.

[0069] Furthermore, such as Figure 2 as well as Figure 3 As shown, the first detection module 400 is preferably designed as a first detection component including two different detection methods. Taking this as an example:

[0070] One of the first detection components may include a first upper sensor 401 and a first lower sensor 402. The first lower sensor 402 is used to detect whether the lifting mechanism 100 has started moving, and the first upper sensor 401 is used to detect whether the lifting mechanism 100 has reached the correct position. The first upper sensor 401 is an upper proximity switch, and the first lower sensor is a lower proximity switch.

[0071] Another first detection component may include a second upper sensor 403 and a second lower sensor 404. The second upper sensor 403 and the second lower sensor 404 may be laser rangefinder switches, and there is no specific limitation. The second lower sensor 404 is used to detect whether the lifting mechanism 100 has started to move, and the second upper sensor 403 is used to detect whether the lifting mechanism 100 has moved to the correct position. Both of them determine the operating state of the lifting mechanism 100 by detecting the displacement change of the lifting mechanism 100.

[0072] Application of the two primary detection components in combination:

[0073] like Figure 2 As shown, the first combination:

[0074] The first upper sensor 401 and the first lower sensor 402 are connected in series to form a first series module, and the second upper sensor 403 and the second lower sensor 404 are connected in series to form a second series module connected in parallel with the first series module.

[0075] Taking the example of unlocking the lifting mechanism 100 when the safety circuit is disconnected and locking the lifting mechanism 100 when the circuit is closed:

[0076] The first lower sensor 402 is designed to be normally closed. When it detects that the lifting mechanism 100 is in the lower position, it switches to the normally open state. The first upper sensor 401 is designed to be normally open. When it detects that the lifting mechanism 100 is in the lower position, it switches to the normally closed state. It can be understood that when the lifting mechanism 100 is in the lower position, the first series module is activated, and the safety circuit can be closed to lock the lifting mechanism 100. When the lifting mechanism 100 is in the lower position, the first series module is deactivated, and the safety circuit can be deactivated to unlock the lifting mechanism 100.

[0077] For the ranging detection method, the second lower sensor 404 is also designed to be normally closed. When it detects that the lifting mechanism 100 is in the lower position, it switches to the normally open state. The second upper sensor 403 is designed to be normally open. When it detects that the lifting mechanism 100 is lifted into position, it switches to the normally closed state. Similarly, when the lifting mechanism 100 is in the lifted-in position, the second series module is turned on, and the safety circuit can be closed to lock the lifting mechanism. When the lifting mechanism 100 is in the lower position, the second series module is turned off, and the safety circuit can be turned off to unlock the lifting mechanism 100.

[0078] The first combination method described above, using a parallel connection, achieves independent and parallel control of two different detection principles. Even if one of the first detection components fails, the other can still be used normally, ensuring the on / off control of the safety loop. Simultaneously, connecting sensors of the same type in series facilitates rapid troubleshooting in subsequent field processes.

[0079] like Figure 3 As shown, the second combination:

[0080] The first upper sensor 401 and the second upper sensor 403 are connected in parallel to form a first parallel module, and the first lower sensor 402 and the second lower sensor 404 are connected in parallel to form a second parallel module connected in series with the first parallel module.

[0081] Taking the example of unlocking the lifting mechanism 100 when the safety circuit is disconnected and locking the lifting mechanism 100 when the circuit is closed:

[0082] The first sensor 402 is also designed to be normally closed. When it detects that the lifting mechanism 100 is in the lower position, it switches to the normally open state. The second sensor 404 is also designed to be normally closed. When it detects that the lifting mechanism 100 is in the lower position, it switches to the normally open state. That is, when the lifting mechanism 100 is in the lower position, the second parallel module is in the open state, and the safety circuit can be disconnected to unlock the lifting mechanism 100. When the lifting mechanism 100 is in the lifted position, the second parallel module is in the closed state, and the safety circuit can be closed to lock the lifting mechanism 100.

[0083] The first upper sensor 401 is designed to be normally open. When it detects that the lifting mechanism 100 is in position, it switches to a normally closed state. The second upper sensor 403 is also designed to be normally open. When it detects that the lifting mechanism 100 is in position, it switches to a normally closed state. That is, when the lifting mechanism 100 is in the lower position, the first parallel module is in the open state, and the safety circuit can be disconnected to unlock the lifting mechanism 100. When the lifting mechanism 100 is in the raised position, the first parallel module is in the closed state, and the safety circuit can be closed to lock the lifting mechanism 100.

[0084] In the second combination method, when either the first upper sensor 401 or the first lower sensor 402 fails, the normal one can still participate in the on / off control of the safety circuit; similarly, when either the second upper sensor 403 or the second lower sensor 404 fails, the normal one can also participate in the on / off control of the safety circuit, thereby ensuring the normal on / off control of the safety circuit. Compared with the first combination method, it can also ensure the on / off control of the safety circuit even when one of the two first detection components fails.

[0085] Furthermore, the first detection module 400 includes two detection components; one first detection component includes a first upper sensor 401 and a first lower sensor 402; the other first detection component includes a second upper sensor 403 or a second lower sensor 404. This design differs from the previous design in that the other first detection component only has a second upper sensor 403 or a second lower sensor 404, meaning only one detection sensor is used. With this design, a result can be formed as follows: Figure 4 The third combination shown is as follows: the first upper sensor 401 and the first lower sensor 402 are connected in series to form a first series module, and the second upper sensor 403 or the second lower sensor 404 is connected in parallel with the first series module.

[0086] Taking the example of unlocking the lifting mechanism 100 when the safety circuit is disconnected and locking the lifting mechanism 100 when the circuit is closed:

[0087] The first lower sensor 402 is also designed to be normally closed. When it detects that the lifting mechanism 100 is in the lower position, it switches to the normally open state. The first upper sensor 401 is designed to be normally open. When it detects that the lifting mechanism 100 is in the lower position, it switches to the normally closed state. It can be understood that when the lifting mechanism 100 is in the lower position, the first series module is activated, and the safety circuit can be closed to lock the lifting mechanism 100. When the lifting mechanism 100 is in the lower position, the first series module is deactivated, and the safety circuit can be deactivated to unlock the lifting mechanism 100.

[0088] Taking the second upper sensor 403 as an example, it is designed to be normally open. When it detects that the lifting mechanism 100 is in the lifted-in position, it switches to a normally closed state. This means that when the lifting mechanism 100 is in the lifted-in position, the second upper sensor 403 is activated, and the safety circuit closes to lock the lifting mechanism 100. When the lifting mechanism 100 is in the lower position, the second upper sensor 403 is deactivated, and the safety circuit opens to unlock the lifting mechanism 100.

[0089] The third combination is similar to the first combination, except that the number of ranging switches is reduced to one, which can save some sensor installation and maintenance costs.

[0090] Furthermore, such as Figures 2 to 4 As shown, the second detection component design includes an oil pressure detection switch 501. The oil pressure detection switch 501 is used to detect the rate of change of oil pressure in the power cylinder of the lifting mechanism 100, or in other words, to detect changes in hydraulic flow. If the detected rate of change of oil pressure is 0 and the oil pressure value is within the preset normal output oil pressure range (the cylinder remains extended), or if the detected rate of decrease in oil pressure exceeds the preset normal value range (cylinder failure), or if the rate of change of oil pressure is >0 and the oil pressure is < the preset value (insufficient oil pressure), then the oil pressure state is considered abnormal. If the detected rate of change of oil pressure is consistently 0 and the oil pressure value is 0 (cylinder not working), or if the rate of change of oil pressure is >0 and the oil pressure is > the preset value (sufficient oil pressure during cylinder extension), then the oil pressure state is considered normal.

[0091] Taking the example of unlocking the lifting mechanism 100 when the safety circuit is disconnected and locking the lifting mechanism 100 when it is closed, then when the hydraulic pressure detection module detects that the hydraulic pressure is normal, it is in the normally open state, allowing the safety circuit to be disconnected to unlock the lifting mechanism 100. When the hydraulic pressure is detected to be abnormal, it is in the normally closed state, allowing the safety circuit to be closed and the mechanical lock module 300 to lock the lifting mechanism 100.

[0092] If we take the example of locking the lifting mechanism 100 when the safety circuit is disconnected and unlocking the lifting mechanism 100 when it is closed, then the switching of the opening and closing states of the first upper sensor 401, the first lower sensor 402, the second upper sensor 403, the second lower sensor 404 and the oil pressure detection switch 501 is reversed, which will not be elaborated further.

[0093] In this application, for the proximity switch type first detection component, there can be two of the first upper sensor 401 and the first lower sensor 402, respectively located on both sides of the mixing tank 200, with one serving as a backup to further enhance safety. Similarly, for the distance switch type first detection component, there can also be two of the second upper sensor 403 and the second lower sensor 404, which will not be elaborated further.

[0094] Furthermore, such as Figures 2 to 4 As shown, it also includes an emergency stop switch 600, which is connected in the safety circuit and is used to control the opening and closing of the safety circuit.

[0095] Taking the example of locking the lifting mechanism 100 when the safety circuit is disconnected and unlocking it when the circuit is closed, in an emergency, the emergency stop switch 600 can be pressed to disconnect the safety circuit. Alternatively, the emergency stop switch 600 can be pressed to close the safety circuit, thereby locking the lifting mechanism 100 by the mechanical lock module 300. Multiple emergency stop switches 600 can be installed, such as directly in front of the mixing tank 200 on the lifting mechanism 100, on both sides of the lifting mechanism 100, or on the control cabinet, etc., without limitation.

[0096] Furthermore, such as Figures 2 to 4 As shown, it also includes a backup power module 700, which is connected to the mechanical lock module 300. The backup power module 700 supplies power to the mechanical lock module 300 when the main power is disconnected, so that the mechanical lock module 300 locks the lifting mechanism 100. In this way, even if the equipment loses power, the mechanical lock module 300 can still lock the lifting mechanism 100 in time.

[0097] Furthermore, such as Figure 5 As shown, the mechanical lock module 300 includes a fixing component 1, a locking component 2, and a drive mechanism in terms of its structural design.

[0098] The fastener 1 is vertically arranged and has multiple slots 11 spaced apart along the vertical direction; the fastener 1 can be a strip tooth or a column structure, and then multiple slots 11 are machined on the column, and there is no specific limitation.

[0099] The drive mechanism is mounted on the movable plate 101 of the lifting mechanism 100 and connected to the clamp 2. It should be noted that the lifting mechanism 100 is an existing lifting component, and its movable plate 101 is also the movable part used to install and fix the mixing tank 200. The mixing tank 200 is driven to move by driving the movable plate 101 to move, which will not be described in detail.

[0100] The drive mechanism is used to drive the card 2 into the card slot 11 to lock the lifting mechanism 100, and also to drive the card 2 out of the card slot 11 to unlock the lifting mechanism 100.

[0101] Furthermore, such as Figure 6 As shown, the structural design of the card 2 includes a magnetic suction part 21 and a card receiving part 22.

[0102] One end of the magnetic suction part 21 is connected to one end of the latching part 22 at an included angle. Both the magnetic suction part 21 and the latching part 22 can be strip-shaped structures, and the length of the magnetic suction part 21 is designed to be shorter than the length of the latching part 22, while the length of the latching part 22 is designed to be longer, making it easier to snap into the slot 11. The magnetic suction part 21 can be a permanent magnet with its own magnetic attraction function, or a permanent magnet can be installed on the magnetic suction part 21 to have a magnetic attraction function. Of course, the magnetic suction part 21 can also be made of iron material, or a magnetic suction structure made of iron material can be installed on the magnetic suction part 21 to have a magnetic attraction function; there are no specific limitations.

[0103] The clip 2 is rotatably mounted on the movable plate 101.

[0104] The driving mechanism includes an electromagnetic component 4 and an elastic component 3.

[0105] One end of the elastic element 3 is connected to the movable plate 101, and the other end is connected to the clip 2.

[0106] The electromagnetic component 4 is fixed on the movable plate 101 and can cooperate with the magnetic suction part 21. The electromagnetic component 4 can be an electromagnet, magnetic switch, etc., and there are no restrictions.

[0107] In the first engagement scenario: the electromagnetic component 4 generates an electromagnetic field that attracts the magnetic attraction part 21 when energized, causing the locking part 22 to overcome the elastic force of the elastic component 3 and rotate out of the slot 11. It can be understood that when the safety circuit is closed, the electromagnetic component 4 is energized, generating an electromagnetic field that attracts the magnetic attraction part 21, causing the magnetic attraction part 21 to move towards the electromagnetic component 4. The locking component 2, as a whole, rotates, allowing the locking part 22 to overcome the elastic force of the elastic component 3 and push out of the slot 11, thus unlocking the lifting mechanism 100. When the safety circuit is closed, the electromagnetic component 4 is de-energized and does not generate a magnetic field. At this time, the locking part 22, under the restoring force of the elastic component 3, engages with the slot 11, thus locking the lifting mechanism 100. To achieve this first engagement scenario, as follows... Figure 6As shown, the electromagnetic component 4 and the elastic component 3 are respectively disposed on both sides of the fixing component 1, and the rotation center line of the clamping component 2 is located on one side of the electromagnetic component. The elastic component 3 can be a tension spring.

[0108] The second engagement configuration: The electromagnetic component 4 generates an electromagnetic field that attracts the magnetic attraction part 21 when energized, causing the locking part 22 to overcome the elastic force of the elastic component 3 and rotate into the slot 11. Understandably, when the safety circuit is closed, the electromagnetic component 4 is energized, generating an electromagnetic field that attracts the magnetic attraction part 21, causing the magnetic attraction part 21 to move towards the electromagnetic component 4. The locking part 2, as a whole, rotates, allowing the locking part 22 to overcome the elastic force of the elastic component 3 and lock into the slot 11, thus locking the lifting mechanism 100. When the safety circuit is closed, the electromagnetic component 4 is de-energized and does not generate a magnetic field. At this time, the locking part 22, under the restoring force of the elastic component 3, exits the slot 11, thus unlocking the lifting mechanism 100. To achieve this second engagement configuration, the rotation center line of the locking part 2 can be designed to be located on one side of the fixed component, while the electromagnetic component 4 and the elastic component 3 are positioned opposite each other on the other side. The spring component 3 can be a compression spring. Those skilled in the art can make appropriate design variations based on this, without limitation.

[0109] Furthermore, the drive mechanism also includes a magnetic mounting base 41 and an elastic mounting base 31; the magnetic mounting base 41 is fixed on the movable plate 101; the electromagnetic component 4 is mounted on the magnetic mounting base 41; the elastic mounting base 31 is fixed on the movable plate 101; the elastic component 3 has one end connected to the elastic mounting base 31 and the other end connected to the snap-fit ​​part 22. The magnetic mounting base 41 and the elastic mounting base 31 facilitate the installation of the electromagnetic component 4 and the elastic component 3, making installation more convenient.

[0110] The aforementioned electromagnetic component 4 is an electromagnet.

[0111] Of course, the drive mechanism can also be designed in other ways:

[0112] For example, the drive mechanism includes a telescopic driver whose telescopic end is connected to the card 2, and drives the card 2 to move so that the card 2 can be engaged or disengaged from the card slot 11.

[0113] For example, the differentiating mechanism includes a rotary driver whose rotary output end is connected to the card 2, which drives the card 2 to rotate so that the card 2 can be inserted into or removed from the card slot 11.

[0114] When the drive mechanism is replaced by other mechanical structures such as cylinders or rotary motors, the on / off state of the safety circuit is converted into a control signal output. For example, when the safety circuit is closed and conducting, signal 1 is output, and when the safety circuit is open, signal 0 is output. Therefore, when the drive mechanism receives signal 1, it can drive the card 2 to engage in the card slot 11, and when it receives signal 0, it can drive the card 2 to disengage from the card slot 11.

[0115] Furthermore, in this application, the fastener 1 can be set vertically through the movable plate 101, and the fit between it and the movable plate 101 is also more compact.

[0116] The above provides a detailed description of a safety control method and control system for a dual planetary mixer provided in this application. For those skilled in the art, based on the ideas of the embodiments of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A safety control method for a dual planetary mixer, characterized in that, Including the following steps: Acquire the motion status of the lifting mechanism (100) under at least two different detection methods; Obtain the hydraulic pressure status of the lifting mechanism (100); When at least one of the obtained action states is in the lifting position and the obtained oil pressure state is in the normal oil pressure state, or when the obtained oil pressure state is in the abnormal oil pressure state, the lifting mechanism (100) is locked. The action state is obtained through the first detection module (400), the hydraulic pressure state is obtained through the second detection module (500), and the lifting mechanism (100) is locked through the mechanical lock module (300). The first detection module (400), the second detection module (500), and the mechanical lock module (300) are connected in series to form a safety circuit; the mechanical lock module (300) is used to lock the lifting mechanism (100) when the safety circuit is closed and conducting or to lock the lifting mechanism (100) when the safety circuit is open. The first detection module (400) includes two first detection components with different detection methods. One of the first detection components includes a first upper sensor (401) and a first lower sensor (402), and the other first detection component includes a second upper sensor (403) and / or a second lower sensor (404). The first upper sensor (401) and the first lower sensor (402) are connected in series to form a first series module, and the second upper sensor (403) and the second lower sensor (404) are connected in series to form a second series module connected in parallel with the first series module; or The first upper sensor (401) and the second upper sensor (403) are connected in parallel to form a first parallel module, and the first lower sensor (402) and the second lower sensor (404) are connected in parallel to form a second parallel module connected in series with the first parallel module; or The first upper sensor (401) and the first lower sensor (402) are connected in series to form a first series module, and the second upper sensor (403) or the second lower sensor (404) is connected in parallel with the first series module.

2. A safety control system for a dual planetary mixer, characterized in that, The method for safety control of a dual planetary mixer as described in claim 1 includes: The system comprises a first detection module (400), a second detection module (500), and a mechanical lock module (300). The first detection module (400), the second detection module (500), and the mechanical lock module (300) are connected in series to form a safety circuit; The mechanical lock module (300) is used to lock the lifting mechanism (100) when the safety circuit is closed and connected or to lock the lifting mechanism (100) when the safety circuit is open. The first detection module (400) includes at least two first detection components with different detection methods, one of which includes a first upper sensor (401) and a first lower sensor (402); the other first detection component includes a second upper sensor (403) and / or a second lower sensor (404). The first upper sensor (401) and the first lower sensor (402) are connected in series to form a first series module, and the second upper sensor (403) and the second lower sensor (404) are connected in series to form a second series module connected in parallel with the first series module; or The first upper sensor (401) and the second upper sensor (403) are connected in parallel to form a first parallel module, and the first lower sensor (402) and the second lower sensor (404) are connected in parallel to form a second parallel module connected in series with the first parallel module; or The first upper sensor (401) and the first lower sensor (402) are connected in series to form a first series module, and the second upper sensor (403) or the second lower sensor (404) is connected in parallel with the first series module; The first detection component is used to acquire the operating state of the lifting mechanism (100); The second detection module (500) includes a second detection component; The second detection component is used to obtain the hydraulic pressure status of the lifting mechanism (100); The mechanical lock module (300) is electrically connected to the first detection module (400) and the second detection module (500) and is used to lock the lifting mechanism (100) when at least one of the detection components detects that the lifting mechanism (100) is in the lifting position and the second detection module (500) detects that the hydraulic pressure of the lifting mechanism (100) is normal, or when the second detection module (500) detects that the hydraulic pressure of the lifting mechanism (100) is abnormal.

3. The control system according to claim 2, characterized in that, The second detection component includes an oil pressure detection switch (501).

4. The control system according to claim 2, characterized in that, It also includes an emergency stop switch (600); The emergency stop switch (600) is connected in the safety circuit and is used to control the opening and closing of the safety circuit.

5. The control system according to claim 2, characterized in that, It also includes a backup power module (700); The backup power module (700) is connected to the mechanical lock module (300) and is used to supply electrical energy to the mechanical lock module (300) when the main power is disconnected, so that the mechanical lock module (300) locks the lifting mechanism (100).

6. The control system according to claim 2, characterized in that, The mechanical lock module (300) includes a fixing component (1), a locking component (2), and a driving mechanism; The fastener (1) is vertically arranged and has multiple slots (11) spaced apart along the vertical direction. The drive mechanism is mounted on the movable plate (101) of the lifting mechanism (100) and connected to the card (2); The drive mechanism is used to drive the card (2) into the card slot (11) to lock the lifting mechanism (100), and also to drive the card (2) out of the card slot (11) to unlock the lifting mechanism (100).

7. The control system according to claim 6, characterized in that, The card (2) includes a magnetic part (21) and a card receiving part (22). One end of the magnetic suction part (21) and one end of the snap-fit ​​part (22) are connected at an angle; The card (2) is rotatably mounted on the movable plate (101); The driving mechanism includes an electromagnetic component (4) and an elastic component (3); One end of the elastic element (3) is connected to the movable plate (101), and the other end is connected to the clip (2); The electromagnetic component (4) is fixed on the movable plate (101); The electromagnetic component (4) is used to generate an electromagnetic field that attracts the magnetic suction part (21) when energized, so that the locking part (22) overcomes the elastic force of the elastic component (3) and rotates out of the slot (11); or The electromagnetic component (4) is used to generate an electromagnetic field that attracts the magnetic suction part (21) when energized, so that the snap-fit ​​part (22) overcomes the elastic force of the elastic component (3) and rotates into the slot (11).

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