CN113104749A - Agricultural lifting device stall self-locking device based on centrifugal force principle - Google Patents
Agricultural lifting device stall self-locking device based on centrifugal force principle Download PDFInfo
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- CN113104749A CN113104749A CN202110328225.XA CN202110328225A CN113104749A CN 113104749 A CN113104749 A CN 113104749A CN 202110328225 A CN202110328225 A CN 202110328225A CN 113104749 A CN113104749 A CN 113104749A
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Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/02—Driving gear
- B66D1/12—Driving gear incorporating electric motors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/28—Other constructional details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/54—Safety gear
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Centrifugal Separators (AREA)
Abstract
The invention discloses an agricultural lifting device stall self-locking device based on a centrifugal force principle, which relates to the technical field of agriculture and comprises a base, wherein a motor is fixedly arranged on the upper surface of the base, the output end of the motor is provided with an output shaft through a coupler fixing sleeve machine, the output shaft is connected with a driving shaft through belt transmission, the outer wall of the driving shaft is fixedly sleeved with a take-up pulley, the upper surface of the base is fixedly connected with a mounting frame, the top end of the mounting frame is fixedly connected with a connecting frame, and the outer wall of the connecting frame is fixedly connected with a self-locking barrel. Compared with the prior art, the reliability is higher.
Description
Technical Field
The invention relates to the technical field of agriculture, in particular to a stall self-locking device of an agricultural lifting device based on a centrifugal force principle.
Background
With the development of modern technology, agricultural equipment is gradually developed to automation and mechanization, and compared with the traditional manual work, the agricultural equipment not only improves the production efficiency, but also saves a large amount of time.
The grain yield of China is continuously increased in recent years, and the domestic reserves are sufficient, so that part of agricultural products are exported or deeply processed to create higher value. When agricultural products are exported, the agricultural products are generally transported by ships at sea in consideration of cost, and are lifted by using equipment such as a crane at a loading dock. Because the mass of once handling is great, and receive the effect of dead weight, gravitation and gravity in the handling removal process, often the actual weight that hoisting equipment's hoisting device bore is greater than the weight of the thing of handling. Frequent handling operation may lead to the phenomenon of hoisting device stall to appear because machinery is tired or weight is overweight, and handling thing descends fast promptly, has very big potential safety hazard to field operation personnel, does not conform to the requirement of country to the safety in production, and simultaneously, the stall not only can cause the damage of equipment, still can lead to the handling thing to bear the additional loss, to the operator of agricultural product, seriously influences its income.
In order to solve the problems, the inventor provides a stall self-locking device of an agricultural lifting device based on the centrifugal force principle, when an object rapidly falls down, the stall self-locking device can play a role in protecting the lifted object by locking a lifting device, meanwhile, the object is prevented from being hurt by a heavy object, and the stall self-locking device plays a role in safety protection for people and equipment.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a stall self-locking device of an agricultural lifting device based on a centrifugal force principle.
In order to achieve the purpose, the invention adopts the following technical scheme:
a stall self-locking device of an agricultural lifting device based on a centrifugal force principle comprises a base, wherein a motor is fixedly installed on the upper surface of the base, an output end of the motor is provided with an output shaft through a coupling fixing sleeve machine, the output shaft is connected with a driving shaft through belt transmission, a take-up pulley is fixedly sleeved on the outer wall of the driving shaft, a mounting frame is fixedly connected to the upper surface of the base, a connecting frame is fixedly connected to the top end of the mounting frame, an automatic locking cylinder is fixedly connected to the outer wall of the connecting frame, a mounting disc is sleeved on the outer wall of the driving shaft, a fastening screw is connected to the inner thread of the mounting disc, and centrifugal mechanisms are fixedly installed on two sides of;
the utility model discloses a spring damper, including a self-locking section of thick bamboo, a plurality of equidistance draw-in grooves of arranging are seted up to the inner wall of a self-locking section of thick bamboo, the ring type mounting groove has been seted up to the inner wall of mounting disc, the inside fixed mounting of ring type mounting groove has the electro-magnet, the inside fixed mounting of mounting disc has the protective housing, the inside of protective housing is provided with magnetorheological suspensions, the bottom inner wall fixed mounting of protective housing has spring resistance ware, spring resistance ware's.
Preferably, the outer wall of the driving shaft is rotatably connected with the top of the mounting frame, the mounting disc is located inside the self-locking cylinder, and the other end of the fastening screw is in threaded connection with the driving shaft.
Preferably, the centrifugal mechanism comprises a housing, a spring is fixedly connected to the inner wall of the housing, a movable contact is fixedly connected to the other end of the spring, and a fixed contact is fixedly mounted on the inner wall of the other side of the housing.
Preferably, the spring is sleeved with a telescopic rod, one end of the telescopic rod is fixedly connected with the inner wall of the shell, and the other end of the telescopic rod is fixedly connected with the inner wall of the movable contact.
Preferably, the movable contact and the fixed contact correspond to each other, and the fixed contact and the movable contact are electrically connected with the electromagnet.
Preferably, electro-magnet, protective housing are eight, electro-magnet, protective housing correspond each other, and all prolong the axle center equidistance of drive shaft and arrange, eight the electro-magnet is established ties each other.
Preferably, the other end of the clamping block penetrates through and extends to the outside of the protective shell, the other end of the clamping block is nested in the clamping groove, and the top corner of the clamping block is a rounded corner.
Preferably, the inner wall and the outer wall of the protective shell are both fixedly connected with sealing rings, and the outer walls of the sealing rings are in contact with the outer walls of the clamping blocks.
Preferably, the magnetorheological fluid comprises dispersed particles, a base fluid and an additive, wherein the dispersed particlesThe particles comprise carbonyl iron powder and Fe3O4The magnetic rheological fluid is solid under the action of an external magnetic field and liquid under the action of no magnetic field.
The invention has the beneficial effects that: according to the invention, when the take-up pulley or the driving shaft stalls, the driving shaft drives the mounting disc to rotate through the fastening screw, the mounting disc rotates rapidly, the centrifugal force generated at the moment is larger, the movable contact is in contact with the fixed contact under the action of the centrifugal force, the electromagnet is electrified at the moment, the electromagnet generates magnetic force, magnetorheological fluid is in a solid state under the action of a magnetic field, the clamping block is clamped into the clamping groove at the moment, the magnetorheological fluid is in the solid state at the moment, the clamping block cannot slide in the magnetorheological fluid, the clamping groove limits the clamping block at the moment, the mounting disc and the driving shaft are limited, namely the take-up pulley stops rotating, so that when the rotating speed is abnormal, the agricultural lifting device stops working, the agricultural lifting device is protected, and accidents are reduced.
In conclusion, when the object rapidly falls down, the stall self-locking device can protect the suspended object by locking the suspended weight equipment through the cooperation of centrifugal force and electromagnetic transmission, and meanwhile, the stall self-locking device can prevent the heavy object from smashing people and protect people and equipment safely.
Drawings
Fig. 1 is a schematic structural diagram of a stall self-locking device of an agricultural lifting device based on the centrifugal force principle.
Fig. 2 is a top view of a self-locking barrel and a connecting frame of the stall self-locking device of the agricultural lifting device based on the centrifugal force principle.
Fig. 3 is a schematic structural view of a self-locking cylinder and a mounting plate of the stall self-locking device of the agricultural lifting device based on the centrifugal force principle.
Fig. 4 is a schematic structural diagram of a centrifugal mechanism of a stall self-locking device of an agricultural lifting device based on the centrifugal force principle according to the present invention.
Fig. 5 is a schematic diagram of the movement tracks of the structures in fig. 4 of the stall self-locking device of the agricultural lifting device based on the centrifugal force principle.
Fig. 6 is a schematic structural view of a self-locking cylinder and a mounting plate of the stall self-locking device of the agricultural lifting device based on the centrifugal force principle.
Fig. 7 is a partial structural schematic view of the stall self-locking device of the agricultural lifting device based on the centrifugal force principle at the position A in fig. 6.
Fig. 8 is a schematic diagram of the movement tracks of the structures in fig. 7 of the stall self-locking device of the agricultural lifting device based on the centrifugal force principle.
Fig. 9 is a schematic structural diagram of a spring resistor of a stall self-locking device of an agricultural lifting device based on the centrifugal force principle.
Reference numbers in the figures: 1. a base; 2. a motor; 3. an output shaft; 4. a mounting frame; 5. a drive shaft; 6. a take-up pulley; 7. a self-locking barrel; 8. mounting a disc; 9. fastening screws; 10. a centrifugal mechanism; 11. an annular mounting groove; 12. an electromagnet; 13. a card slot; 14. a protective shell; 15. magnetorheological fluid; 16. a spring resistor; 17. a clamping block; 18. a seal ring; 19. a connecting frame; 101. a housing; 102. a telescopic rod; 103. a spring; 104. a movable contact; 105. and fixing the contact.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-9, an agricultural lifting device stall self-locking device based on a centrifugal force principle comprises a base 1, a motor 2 is fixedly installed on the upper surface of the base 1, an output end of the motor 2 is provided with an output shaft 3 through a coupler fixing sleeve, the output shaft 3 is connected with a driving shaft 5 through a belt transmission, a take-up pulley 6 is fixedly sleeved on the outer wall of the driving shaft 5, an installation frame 4 is fixedly connected on the upper surface of the base 1, the top end of the installation frame 4 is fixedly connected with a connection frame 19, the outer wall of the connection frame 19 is fixedly connected with a self-locking cylinder 7, the outer wall of the driving shaft 5 is sleeved with an installation disc 8, an internal thread of the installation disc 8 is connected with a lock-in screw 9;
the inner wall of a self-locking cylinder 7 is provided with a plurality of clamping grooves 13 which are arranged at equal intervals, the inner wall of the mounting disc 8 is provided with a ring-shaped mounting groove 11, the inside fixed mounting of the ring-shaped mounting groove 11 is provided with an electromagnet 12, the inside fixed mounting of the mounting disc 8 is provided with a protective shell 14, the inside of the protective shell 14 is provided with magnetorheological fluid 15, the bottom inner wall of the protective shell 14 is fixedly provided with a spring resistor 16, and the other end of the spring resistor 16 is fixedly connected with a clamping.
The outer wall of the driving shaft 5 is rotatably connected with the top of the mounting frame 4, the mounting plate 8 is positioned in the self-locking cylinder 7, the other end of the fastening screw 9 is in threaded connection with the driving shaft 5, the centrifugal mechanism 10 comprises a shell 101, the inner wall of the shell 101 is fixedly connected with a spring 103, the other end of the spring 103 is fixedly connected with a movable contact 104, the inner wall of the other side of the shell 101 is fixedly provided with a fixed contact 105, the inside of the spring 103 is sleeved with a telescopic rod 102, one end of the telescopic rod 102 is fixedly connected with the inner wall of the shell 101, the other end of the telescopic rod 102 is fixedly connected with the inner wall of the movable contact 104, the movable contact 104 corresponds to the fixed contact 105, the fixed contact 105 and the movable contact 104, the protective casings 14 are eight, the electromagnets 12 and the protective casings 14 correspond to each other, and are arranged at equal intervals along the axis of the drive shaft 5, and the eight electromagnets 12 are connected in series.
The other end of fixture block 17 runs through and extends to the outside of protective housing 14, the other end of fixture block 17 nests in the inside of draw-in groove 13, the top corner of fixture block 17 sets up to the radius angle, the equal fixedly connected with sealing ring 18 of inner wall, the outer wall of protective housing 14, the outer wall of sealing ring 18 contacts with the outer wall of fixture block 17, magnetorheological suspensions 15 includes dispersed particle, base fluid, additive constitution, wherein dispersed particle is including carbonyl iron powder, Fe iron powder3O4Cobalt powder, iron-cobalt alloy, nickel-zinc alloy and composite soft magnetic particles, wherein the base fluid takes colloid as carrier fluid, and the additive comprises oleic acid, oleate,Naphthenate, sulfonate, phosphate, stearic acid and salts thereof, glycerol monooleate, fatty alcohol and silicon dioxide, wherein the magnetorheological fluid 15 is in a solid state under the action of an external magnetic field and is in a liquid state under the action of no magnetic field.
The working principle is as follows:
when the device is used, in an initial state, the motor 2 is started, the motor 2 drives the output shaft 3 to rotate, the output shaft 3 drives the driving shaft 5 to rotate through the belt, the driving shaft 5 drives the take-up pulley 6 to rotate, and the take-up pulley 6 is used for taking up and paying off wires to realize lifting and carrying of objects;
the above structure and process are shown in FIGS. 1-2.
Meanwhile, the driving shaft 5 drives the mounting disc 8 to rotate through the fastening screw 9, because the driving shaft is at a normal rotating speed at the moment, the rotating speed of the mounting disc 8 is slow, the generated centrifugal force is small, the movable contact 104 is not in contact with the fixed contact 105 under the action of the spring 103, the electromagnet 12 is not electrified at the moment, the electromagnet 12 does not generate magnetic force, the magnetorheological fluid 15 is in a liquid state under the action of no magnetic field, the mounting disc 8 drives the clamping block 17 to rotate at the moment, when the clamping block 17 is clamped into the clamping groove 13, the clamping block 17 can slide in the magnetorheological fluid 15, at the moment, the clamping groove 13 does not limit the clamping block 17, and does not limit the mounting disc 8 and the driving shaft 5, namely, the normal rotation of the take-up pulley 6 is not influenced, so that the normal work of the;
when the take-up pulley 6 or the driving shaft 5 stalls, the driving shaft 5 drives the mounting disc 8 to rotate through the fastening screw 9, the mounting disc 8 rotates rapidly, the centrifugal force generated at the moment is large, the movable contact 104 contacts with the fixed contact 105 under the action of the centrifugal force, the electromagnet 12 is electrified at the moment, the electromagnet 12 generates magnetic force, the magnetorheological fluid 15 is solid under the action of a magnetic field, the clamping block 17 is clamped into the clamping groove 13 at the moment, because the magnetorheological fluid 15 is solid at the moment, the clamping block 17 cannot slide in the magnetorheological fluid 15, the clamping groove 13 limits the clamping block 17 at the moment, and the mounting disc 8 and the driving shaft 5 generate a limiting effect, namely, the take-up pulley 6 stops rotating, so when the rotating speed is abnormal, the agricultural lifting device stops working, the agricultural lifting device is protected, and accidents are reduced.
The above structure and process are shown in FIGS. 1-8.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (9)
1. A stall self-locking device of an agricultural lifting device based on the centrifugal force principle comprises a base (1), it is characterized in that the upper surface of the base (1) is fixedly provided with a motor (2), the output end of the motor (2) is provided with an output shaft (3) through a coupling fixing sleeve, the output shaft (3) is connected with a driving shaft (5) through a belt in a transmission way, the outer wall of the driving shaft (5) is fixedly sleeved with a take-up pulley (6), the upper surface of the base (1) is fixedly connected with a mounting rack (4), the top end of the mounting rack (4) is fixedly connected with a connecting rack (19), the outer wall of the connecting frame (19) is fixedly connected with a self-locking cylinder (7), the outer wall of the driving shaft (5) is sleeved with an installation disc (8), a fastening screw (9) is connected to the inner thread of the mounting plate (8), and centrifugal mechanisms (10) are fixedly mounted on two sides of the inner part of the mounting plate (8);
draw-in groove (13) that a plurality of equidistance were arranged are seted up to the inner wall of a self-locking section of thick bamboo (7), loop type mounting groove (11) have been seted up to the inner wall of mounting disc (8), the inside fixed mounting of loop type mounting groove (11) has electro-magnet (12), the inside fixed mounting of mounting disc (8) has protective housing (14), the inside of protective housing (14) is provided with magnetorheological suspensions (15), the bottom inner wall fixed mounting of protective housing (14) has spring resistance ware (16), the other end fixedly connected with fixture block (17) of spring resistance ware (16).
2. The stall self-locking device of the agricultural lifting device based on the centrifugal force principle as claimed in claim 1, wherein the outer wall of the driving shaft (5) is rotatably connected with the top of the mounting frame (4), the mounting disc (8) is located inside the self-locking cylinder (7), and the other end of the fastening screw (9) is in threaded connection with the driving shaft (5).
3. The stall self-locking device for the agricultural lifting device based on the centrifugal force principle according to claim 1, wherein the centrifugal mechanism (10) comprises a housing (101), a spring (103) is fixedly connected to the inner wall of the housing (101), a movable contact (104) is fixedly connected to the other end of the spring (103), and a fixed contact (105) is fixedly mounted on the inner wall of the other side of the housing (101).
4. The stall self-locking device of the agricultural lifting device based on the centrifugal force principle as claimed in claim 3, wherein a telescopic rod (102) is sleeved inside the spring (103), one end of the telescopic rod (102) is fixedly connected with the inner wall of the housing (101), and the other end of the telescopic rod (102) is fixedly connected with the inner wall of the movable contact (104).
5. The stall self-locking device for the agricultural lifting device based on the centrifugal force principle as claimed in claim 3, wherein the movable contact (104) and the fixed contact (105) correspond to each other, and the fixed contact (105) and the movable contact (104) are electrically connected with the electromagnet (12).
6. The stall self-locking device for the agricultural lifting device based on the centrifugal force principle as claimed in claim 1, wherein the number of the electromagnets (12) and the protective shell (14) is eight, the electromagnets (12) and the protective shell (14) correspond to each other and are arranged at equal intervals along the axis of the driving shaft (5), and the eight electromagnets (12) are connected in series.
7. The stall self-locking device for the agricultural lifting device based on the centrifugal force principle as claimed in claim 1, wherein the other end of the clamping block (17) penetrates through and extends to the outside of the protective shell (14), the other end of the clamping block (17) is nested inside the clamping groove (13), and the top corner of the clamping block (17) is rounded.
8. The stall self-locking device for the agricultural lifting device based on the centrifugal force principle as claimed in claim 1, wherein a sealing ring (18) is fixedly connected to each of the inner wall and the outer wall of the protective shell (14), and the outer wall of the sealing ring (18) is in contact with the outer wall of the clamping block (17).
9. The stall self-locking device of the agricultural lifting device based on the centrifugal force principle as claimed in claim 1, wherein the magnetorheological fluid (15) comprises dispersed particles, a base fluid and an additive, wherein the dispersed particles comprise carbonyl iron powder and Fe3O4The magnetic rheological liquid comprises base liquid, colloid serving as carrier liquid, additives including oleic acid, oleate, naphthenate, sulfonate, phosphate, stearic acid and salts thereof, glycerol monooleate, fatty alcohol and silicon dioxide, wherein the magnetic rheological liquid (15) is in a solid state under the action of an external magnetic field and is in a liquid state under the action of no magnetic field.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110328225.XA CN113104749A (en) | 2021-03-26 | 2021-03-26 | Agricultural lifting device stall self-locking device based on centrifugal force principle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110328225.XA CN113104749A (en) | 2021-03-26 | 2021-03-26 | Agricultural lifting device stall self-locking device based on centrifugal force principle |
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| Publication Number | Publication Date |
|---|---|
| CN113104749A true CN113104749A (en) | 2021-07-13 |
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|---|---|---|---|
| CN202110328225.XA Pending CN113104749A (en) | 2021-03-26 | 2021-03-26 | Agricultural lifting device stall self-locking device based on centrifugal force principle |
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| CN (1) | CN113104749A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100849661B1 (en) * | 2007-06-12 | 2008-08-01 | 한국기계연구원 | Mr rotary brake with permanent magnet |
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| CN112413009A (en) * | 2020-11-19 | 2021-02-26 | 象山县恒力机械铸钢厂 | Stall automatic braking's rotating machine for hardware processing |
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