CN114039457A - Worm gear speed reducer with overload protection structure - Google Patents
Worm gear speed reducer with overload protection structure Download PDFInfo
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- CN114039457A CN114039457A CN202111430303.3A CN202111430303A CN114039457A CN 114039457 A CN114039457 A CN 114039457A CN 202111430303 A CN202111430303 A CN 202111430303A CN 114039457 A CN114039457 A CN 114039457A
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- overload protection
- circuit
- speed reducer
- shaft
- protection structure
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
- H02K7/1163—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears where at least two gears have non-parallel axes without having orbital motion
- H02K7/1166—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears where at least two gears have non-parallel axes without having orbital motion comprising worm and worm-wheel
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention relates to the technical field of worm and gear speed reducers, in particular to a worm and gear speed reducer with an overload protection structure, which comprises a speed reducer body, an overload protection mechanism and a circuit breaking controller, wherein the worm and gear speed reducer with the overload protection structure is arranged in the invention, the speed reducer body is externally connected with the overload protection structure, the output end of a motor is connected with a driving shaft arranged in the overload protection mechanism through a coupling, when a transmission system is overloaded, a circuit breaking device is separated from the overload protection shaft, and a circuit connecting piece triggers the circuit breaking controller to cut off the power supply of the motor, so that the aim of protecting the motor and a transmission assembly is achieved, the worm and gear of the worm and gear speed reducer are fixed in position and have small matching gaps, thereby avoiding the problem of serious abrasion caused by the increase of the gaps, and simultaneously avoiding the damage to the motor or the damage to transmission parts caused by the continuous rotation of the motor, thereby prolonging the service life of the transmission parts.
Description
Technical Field
The invention relates to the technical field of speed reducer bodies, in particular to a worm and gear speed reducer with an overload protection structure.
Background
The worm gear reducer is a power transmission mechanism, the revolution number of a motor is reduced to a required revolution number by utilizing a speed converter of a gear, and a mechanism with larger torque is obtained, the transmission is a spiral transmission, the main form of the transmission is tooth meshing transmission, so the transmission is more stable, the vibration is small, the noise is low, but the transmission efficiency of a reducer body is lower, because the worm gear transmission is meshing gear transmission, and larger relative sliding speed exists between meshing gears, the abrasion, the heating and the energy consumption of tooth surfaces can be caused, therefore, in order to prolong the service life of the worm gear reducer, when a worm gear reducer is generally used in a transmission system of mechanical equipment, a practitioner generally selects a worm gear reducer as large as possible, so when the transmission system is overloaded in actual production, the current of the motor is generally increased, and the temperature is rapidly increased to cause the damage of the motor, in order to avoid the motor burnout, a motor with overload protection or a speed reducer with an overload protection structure is generally used in a mechanical transmission system;
however, most of the existing worm gear speed reducers with overload protection structures adopt the overload protection mode that: through elastic connection mechanism, when transmission system transships, make turbine and worm separation, thereby reach overload protection's purpose, so, must lead to the fit clearance increase of worm gear under the operating mode, thereby aggravated the wearing and tearing of worm gear, and when transmission system transships, the motor still drives the worm and rotates, and when high-speed pivoted worm and turbine point contact, very easily cause the corner of worm gear to break out, thereby reduce transmission system's stability, reduce overload protection device's life simultaneously.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a worm and gear speed reducer with an overload protection structure.
The technical scheme adopted by the invention for solving the technical problems is as follows: a worm and gear speed reducer with an overload protection structure comprises a speed reducer body, an overload protection mechanism and a circuit breaking controller, wherein the overload protection mechanism is arranged between a worm of the speed reducer body and a motor, the circuit breaking controller is fixedly installed on the outer wall of the overload protection mechanism, and the circuit breaking controller is electrically connected with the motor controller;
overload protection mechanism includes the overload protection axle mount pad with motor and worm coaxial arrangement, and overload protection axle mount pad is inside to have the overload protection axle through bearing normal running fit, has the circuit connection spare through bolt fixed mounting on the outer wall of overload protection axle, and the inside of the input of overload protection axle installs the driving shaft coaxial with the overload protection axle through the parallel key cooperation, installs circuit breaker through the parallel key cooperation on the outer wall of driving shaft, and circuit breaker is the mating mechanism with the circuit connection spare.
Further, the overload protection axle includes through the connecting axle A of parallel key cooperation at the worm input, and there is the transmission shaft connecting an end of connecting axle A through bolt fixed mounting, and there is connecting axle B the other end of transmission shaft through bolt fixed mounting, and connecting axle A, transmission shaft and connecting axle B are coaxial, and the welding has annular platform on the outer wall of transmission shaft, and the circuit connection spare passes through the bolt fastening on an end face of annular platform, connecting axle A, connecting axle B and transmission shaft, consolidate through the bolt and become a whole behind the joint.
Further, overload protection axle mount pad is including the mount pad base that is used for supporting the overload protection axle, there is the mount pad upper cover mount pad up end of mount pad base through bolt fixed mounting, the riveting is fixed with circuit contact A on the inner wall of mount pad upper cover, and circuit contact A and circuit connecting piece be the cooperation mechanism, the round hole has been seted up to mount pad upper cover riveting fixed circuit contact A's position, and circuit contact A passes through round hole and circuit breaker electric connection, overload protection axle mount pad both ends are provided with the bearing groove, the overload protection axle passes through bearing normal running fit in overload protection axle mount pad.
Further, the circuit connecting piece has seted up two ring channels including fixing the solid fixed ring in annular platform one end on solid fixed ring's the inner wall, has distributed many cables in the ring channel, and the both ends fixed weld of every cable has circuit contact B, and the welding has two annular conducting strips on solid fixed ring's the outer wall, and the closed circuit and the annular conducting strip electric connection that form after the circuit contact B at many cable wire both ends is connected.
Further, circuit breaking device includes through the stopper of flat key cooperation on the driving shaft outer wall, and the one end of stopper is provided with rotates the seat, and the stopper passes through the bolt fastening and puts at the inside central point who rotates the seat, has seted up a plurality of rectangular channels on rotating the outer wall of seat, and sliding fit has the supporting component in the rectangular channel, is provided with compression spring between a terminal surface of supporting component and the terminal surface of stopper, and the open end of rotating the seat has the closing cap through bolt fixed mounting.
Further, the supporting component comprises a supporting block which is in sliding fit in the rectangular groove, an arc limiting plate is fixedly welded on one end face of the supporting block, the arc limiting plate and the rotating seat are matched, a rectangular conducting strip is embedded into the other end of the supporting block, the rectangular conducting strip and the circuit contact B are matched, the plurality of cables are disconnected respectively, adjacent cables are connected in series to form a loop through the rectangular conducting strip and the circuit contact B, and the loop formed by the series connection is electrically connected with the annular conducting strip.
Furthermore, the top end of the supporting block is provided with an inclination angle, the contact surface of the rectangular groove and the supporting block is also provided with an inclination angle, when the transmission system is overloaded, the extrusion force between the supporting block and the rectangular groove is increased, and the supporting block is retracted into the circuit breaking device under the guidance of the inclination angle.
Furthermore, the overload protection mechanism also comprises a driven shaft with one end matched with the connecting shaft A in a sliding way, a return spring is arranged between the driven shaft and the connecting shaft A, a limit ring is arranged at one end of the inner wall of the transmission shaft close to the driven shaft,
furthermore, a cross groove is formed in one end of the connecting shaft A, a cross rod is fixedly clamped at one end of the driven shaft, and the cross rod is in sliding fit in the cross groove.
Furthermore, a conical groove is formed in one end face of the driven shaft, and clamping teeth with inclined planes on two sides are arranged at the bottom of the conical groove.
Furthermore, one end of the driving shaft is fixedly clamped with a conical head, the conical head and the conical groove are matched mechanisms, a plurality of tooth sockets are formed in the conical head, and the tooth sockets and the clamping teeth are matched mechanisms.
The invention has the beneficial effects that:
1: the invention provides a worm gear speed reducer with an overload protection structure, the speed reducer body is externally connected with the overload protection structure, the output end of a motor is connected with a driving shaft arranged in the overload protection mechanism through a coupler, the output end of the overload protection shaft is connected with a worm of the speed reducer body through a flat key, when a transmission system is overloaded, a circuit breaking device is separated from the overload protection shaft, meanwhile, the circuit connecting piece triggers the circuit breaking controller to cut off the power supply of the motor, so as to achieve the purpose of protecting the motor and the transmission assembly, the fixed matching clearance between the worm and gear of the speed reducer body is smaller, the problem of serious abrasion caused by increasing the clearance is avoided, meanwhile, the power supply of the motor can be quickly disconnected through the circuit breaking controller in overload, the damage to the motor or the transmission parts caused by the continuous rotation of the motor is avoided, and the service life of the transmission parts is prolonged;
according to the worm and gear speed reducer with the overload protection structure, a part of kinetic energy provided by the motor is transmitted to the speed reducer body through the driven shaft, and the reaction force borne by the supporting block during working is reduced, so that the service life of the circuit breaking device is prolonged, the problem that the circuit breaking device is frequently disconnected when the instantaneous load is too large is avoided, and the traditional system is more stable.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a perspective view of the overall structure of the present invention;
FIG. 2 is a partial cross-sectional view of the overall structure of the present invention;
FIG. 3 is an enlarged view of area A of FIG. 2 in accordance with the present invention;
FIG. 4 is a perspective view of the overload protection mechanism of the present invention;
FIG. 5 is an exploded view of the overload protection mechanism of the present invention;
fig. 6 is a perspective view of the circuit interrupting device of the present invention;
fig. 7 is a perspective view of the circuit connector of the present invention.
In the figure: 1. a speed reducer body; 2. an overload protection mechanism; 3. a circuit breaking controller; 21. an overload protection shaft mounting base; 22. an overload protection shaft; 23. a circuit connection member; 24. a drive shaft; 25. a circuit breaking device; 26. a driven shaft; 27. a return spring; 211. a mounting base; 212. an upper cover of the mounting seat; 213. a circuit contact A; (ii) a 221. Connecting the shaft A; 222. a drive shaft; 223. a connecting shaft B; 224. an annular table; 231. a fixing ring; 232. an annular conductive sheet; 233. a cable wire; 234. a circuit contact B; 251. a rotating seat; 252. sealing the cover; 253. a support assembly; 254. a limiting block; 255. a compression spring; 2531. a support block; 2532. an arc limiting plate; 2533. a rectangular conductive sheet.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1-7, the worm and gear speed reducer with an overload protection structure according to the present invention includes a speed reducer body 1, an overload protection mechanism 2 and a circuit breaking controller 3, wherein the overload protection mechanism 2 is disposed between a worm of the speed reducer body 1 and a motor, the circuit breaking controller 3 is fixedly mounted on an outer wall of the overload protection mechanism 2, and the circuit breaking controller 3 is electrically connected to the motor controller;
the overload protection mechanism 2 comprises an overload protection shaft mounting seat 21 coaxially mounted with a motor and a worm, an overload protection shaft 22 is rotatably matched in the overload protection shaft mounting seat 21 through a bearing, a circuit connecting piece 23 is fixedly mounted on the outer wall of the overload protection shaft 22 through a bolt, a driving shaft 24 coaxial with the overload protection shaft 22 is mounted in the input end of the overload protection shaft 22 through a flat key in a matching manner, a circuit breaking device 25 is mounted on the outer wall of the driving shaft 24 through a flat key in a matching manner, the circuit breaking device 25 and the circuit connecting piece 23 are matched mechanisms, during specific work, the output end of the motor is connected with the driving shaft 24 arranged in the overload protection mechanism 2 through a coupler, the output end of the overload protection shaft 22 is connected with the worm of the speed reducer body 1 through the flat key, when a transmission system is overloaded, the circuit breaking device 25 is separated from the overload protection shaft 22, and simultaneously, the circuit breaking controller 3 is triggered through the circuit connecting piece 23 to cut off the power supply of the motor, thereby achieving the purpose of protecting the motor and the transmission assembly.
Overload protection axle mount pad 21 is including the mount pad base 211 that is used for supporting overload protection axle 22, there is mount pad upper cover 212 mount pad base 211's up end through bolt fixed mounting, the riveting is fixed with circuit contact A213 on the inner wall of mount pad upper cover 212, and circuit contact A213 and circuit connecting piece 23 are the cooperation mechanism, the round hole has been seted up to mount pad upper cover 212 riveting fixed circuit contact A213's position, and circuit contact A213 is through round hole and 3 electric connection of circuit break controller, overload protection axle mount pad 21 both ends are provided with the bearing groove, overload protection axle 22 passes through bearing normal running fit in overload protection axle mount pad 21.
The circuit connecting piece 23 comprises a fixing ring 231 fixed at one end of the annular table 224, two annular grooves are formed in the inner wall of the fixing ring 231, a plurality of cables 233 are distributed in the annular grooves, circuit contacts B234 are fixedly welded at two ends of each cable 233, two annular conducting strips 232 are welded on the outer wall of the fixing ring 231, a closed loop formed after the circuit contacts B234 at two ends of each cable 233 are connected is electrically connected with the annular conducting strips 232, the circuit contacts B234 arranged at disconnection points among the cables correspond to a matching mechanism arranged in the circuit breaking device 25, the cables 233 are connected in series to form a loop through the matching of the circuit contacts B234 and the circuit breaking device 25, a notch is formed in the outer wall of the fixing ring 231, the serial loop is disconnected at the notch, two ends of the loop are respectively connected with the two annular conducting strips 232 after passing through the notch, and when the circuit connecting piece works, the two annular conducting strips 232 are in contact with the circuit contact a213 to enable the serial loop to be electrically connected with the circuit breaking controller 3.
The circuit breaking device 25 comprises a limiting block 254 matched on the outer wall of the driving shaft 24 through a flat key, one end of the limiting block 254 is provided with a rotating seat 251, the limiting block 254 is fixed at the inner center position of the rotating seat 251 through a bolt, the outer wall of the rotating seat 251 is provided with a plurality of rectangular grooves, a supporting component 253 is matched in the rectangular grooves in a sliding manner, a compression spring 255 is arranged between one end surface of the supporting component 253 and the end surface of the limiting block 254, a sealing cover 252 is fixedly installed at the opening end of the rotating seat 251 through a bolt, the supporting component 253 comprises a supporting block 2531 matched in the rectangular grooves in a sliding manner, an arc limiting plate 2532 is fixedly welded on one end surface of the supporting block 2531, the arc limiting plate 2532 and the rotating seat 251 are matched mechanisms, a rectangular conducting strip 2533 is embedded in the other end of the supporting block 2531, the rectangular conducting strip 2533 and a circuit contact B234 are matched mechanisms, and the top end of the supporting block 2531 is provided with an inclination angle, and the rectangular groove and the contact surface of the supporting block 2531 are also provided with an inclination angle, the adjacent cables 233 are connected in series to form a loop through the rectangular conducting strip 2533 and the circuit contact B234, the loop formed by the series connection is electrically connected with the annular conducting strip 232, when the device works, the arc-shaped limiting plate 2532 is supported by the compression spring 255, the supporting block 2531 extends out and is clamped in the rectangular groove formed on the outer wall of the rotating base 251, the rectangular conducting strip 2533 arranged at the top end of the supporting block 2531 is contacted with the circuit contact B234, so that the plurality of cables 233 are connected in series to form a loop, the motor is connected with the driving shaft 24 through the coupling to drive the driving shaft 24 to rotate, the driving shaft 24 drives the circuit breaking device 25 to rotate through the limiting block 254 connected with the driving shaft 24 in a key manner, and then drives the rotating base 251 to rotate through the supporting block 2531 clamped in the rotating base 251 in the circuit breaking device 25, and most of the work done by the motor is converted into mechanical energy driving equipment to operate under normal state, at this time, the extrusion force of the supporting block 2531 to the side wall of the rectangular groove overcomes the rotation resistance of the rotating seat 251, the elastic force of the compression spring 255 is greater than the component force of the extrusion force of the rectangular groove to the supporting block 2531 along the vertical direction of the supporting block 2531, the transmission system operates normally, the rotation resistance of the rotating seat 251 is increased sharply during overload, so that the reaction force of the rotating seat 251 to the supporting block 2531 is increased, the elastic force of the compression spring 255 is less than the component force of the extrusion force of the rectangular groove to the supporting block 2531 along the vertical direction of the supporting block 2531, so that the supporting block 2531 retracts, so that the rectangular conducting strip 2533 is separated from the circuit contact B234, so that the circuit breaking controller 3 senses overload, the motor is powered off, and the phenomenon that the motor current is increased and is burnt out due to overheating during overload is avoided.
The overload protection mechanism 2 further comprises a driven shaft 26 with one end in sliding fit with the connecting shaft A221, a reset spring 27 is arranged between the driven shaft 26 and the connecting shaft A221, a limit ring is arranged at one end, close to the driven shaft 26, of the inner wall of the transmission shaft 222, a cross groove is formed at one end of the connecting shaft A221, a cross rod is fixedly clamped at one end of the driven shaft 26 and is in sliding fit with the cross groove, the driven shaft 26 is in sliding fit with the cross groove formed in the connecting shaft A221 through the cross rod, one end face of the driven shaft 26 is tightly attached to the limit ring under the action of the elastic force of the reset spring 27, a conical groove is formed in one end face of the driven shaft 26, clamping teeth with inclined planes on two sides are arranged at the bottom of the conical groove, a conical head is fixedly clamped at one end of the driving shaft 24 and is a matching mechanism with the conical groove, a plurality of tooth sockets are formed in the conical head, and the tooth sockets are matching mechanisms with the clamping teeth, the contact surface of the tooth socket and the latch after matching is an inclined surface, and the tangent value of the friction angle of the tooth socket and the latch is larger than the friction coefficient of the material used by the latch, when the breaker works specifically, the conical groove and the latch are matched with the conical head and the tooth socket under the action of the elastic force of the return spring 27, the driving shaft 24 rotates, the driven shaft 26 is driven to rotate by the clamping of the conical head and the tooth socket, the driving shaft 26 is in sliding fit in the cross groove formed in the connecting shaft A221 through the cross rod so as to transmit the kinetic energy to the connecting shaft A221, therefore, when the breaker works normally, part of the kinetic energy provided by the motor is transmitted to the reducer body 1 through the driven shaft 26, the reaction force born by the supporting block 2531 during working is reduced, the service life of the breaker 25 is prolonged, and the problem that the breaker 25 is frequently broken when the transient load is overlarge is generated is avoided, so that the traditional system is more stable, the elastic force of the reset spring 27 is larger than the component force of the tooth groove inclined surface to the clamping tooth extrusion force along the axial direction, when the overload occurs, the extrusion force of the tooth groove inclined surface to the clamping tooth is increased, so that the component force of the tooth groove inclined surface to the clamping tooth extrusion force along the axial direction is larger than the elastic force of the reset spring 27, the reset spring 27 compresses the driven shaft 26 to move towards one side of the connecting shaft A221, the clamping tooth and the clamping groove are gradually separated, at the moment, along with the component force of the clamping tooth and the clamping groove gradually, the kinetic energy which can be transmitted by the driven shaft 26 is reduced, the load is reduced, and the load borne by the circuit breaking device 25 is increased, so that the circuit breaking device cuts off the power supply of the motor.
The working principle is as follows:
overload protection: the compression spring 255 supports the arc-shaped limit plate 2532 to extend the support block 2531, the support block 2531 extends and is clamped in a rectangular groove formed in the outer wall of the rotating seat 251, a rectangular conducting strip 2533 arranged at the top end of the support block 2531 is contacted with the circuit contact B234 to enable the plurality of cables 233 to be connected in series to form a loop, most of the work done by the motor is converted into the operation of the mechanical energy driving device under the normal state, at the moment, the extrusion force of the support block 2531 on the side wall of the rectangular groove overcomes the rotating resistance of the rotating seat 251, the elastic force of the compression spring 255 is greater than the component force of the extrusion force of the rectangular groove on the support block 2531 along the vertical direction of the support block 2531, the transmission system operates normally, when the overload occurs, the rotating resistance of the rotating seat 251 is increased sharply, so that the reaction force of the rotating seat 251 on the support block 2531 is increased, the elastic force of the compression spring 255 is less than the component force of the extrusion force of the rectangular groove on the support block 2531 along the vertical direction of the support block 2531, so that the support block 2531 retracts, the support block 2531 retracts to separate the rectangular conductive strip 2533 from the circuit contact B234, so that the overload is sensed by the circuit breaking controller 3, and the motor is powered off, thereby preventing the motor from being overheated and burnt out due to the increase of the current during the overload.
Mechanism protection: during normal operation, a part of kinetic energy provided by the motor is transmitted to the speed reducer body 1 through the driven shaft 26, so that the reaction force borne by the supporting block 2531 during operation is reduced, thereby increasing the service life of the circuit breaking device 25 and simultaneously avoiding the problem that the circuit breaking device 25 is frequently disconnected when the transient load is too large, so that the traditional system is more stable, in the process, the elastic force of the return spring 27 is larger than the component force of the tooth socket inclined surface to the clamping tooth extrusion force along the axial direction, when overload occurs, the extrusion force of the tooth socket inclined surface to the latch is increased, so that the component force of the tooth socket inclined surface to the latch extrusion force along the axial direction is larger than the elastic force of the return spring 27, the return spring 27 compresses the driven shaft 26 to move towards one side of the connecting shaft A221, the latch is gradually separated from the slot, at the moment, along with the gradual component force of the latch and the slot, the kinetic energy transmitted by the driven shaft 26 is reduced, the load is reduced, and the load borne by the circuit breaker 25 is increased, so that the circuit breaker can cut off the power supply of the motor.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the embodiments and descriptions given above are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (11)
1. The utility model provides a take turbine worm speed reducer machine of overload protection structure, includes turbine worm speed reducer machine (1), overload protection mechanism (2) and circuit break controller (3), its characterized in that: an overload protection mechanism (2) is arranged between a worm of the worm gear and worm speed reducer (1) and the motor, a circuit breaking controller (3) is fixedly installed on the outer wall of the overload protection mechanism (2), and the circuit breaking controller (3) is electrically connected with the motor controller;
overload protection mechanism (2) include with motor and worm coaxial arrangement's overload protection axle mount pad (21), overload protection axle mount pad (21) are inside to have overload protection axle (22) through bearing normal running fit, there are circuit connection spare (23) through bolt fixed mounting on the outer wall of overload protection axle (22), and the inside of the input of overload protection axle (22) is installed through the parallel key cooperation and is had with the coaxial driving shaft (24) of overload protection axle (22), install breaker (25) through the parallel key cooperation on the outer wall of driving shaft (24), and breaker (25) are the cooperation mechanism with circuit connection spare (23).
2. The turbine worm speed reducer with the overload protection structure according to claim 1, wherein the overload protection shaft (22) comprises a connecting shaft A (221) which is matched with an input end of the worm through a flat key, a transmission shaft (222) is fixedly installed on one end face of the connecting shaft A (221) through a bolt, a connecting shaft B (223) is fixedly installed on the other end of the transmission shaft (222) through a bolt, the connecting shaft A (221), the transmission shaft (222) and the connecting shaft B (223) are coaxial, an annular table (224) is welded on the outer wall of the transmission shaft (222), and the circuit connecting piece (23) is fixed on one end face of the annular table (224) through a bolt.
3. The turbine worm speed reducer with the overload protection structure according to claim 2, wherein the overload protection shaft mounting base (21) comprises a mounting base (211) for supporting the overload protection shaft (22), a mounting base upper cover (212) is fixedly mounted on the upper end face of the mounting base (211) through a bolt, a circuit contact A (213) is fixedly riveted on the inner wall of the mounting base upper cover (212), the circuit contact A (213) and the circuit connecting piece (23) are matched mechanisms, a round hole is formed in the position where the mounting base upper cover (212) is fixedly riveted on the circuit contact A (213), and the circuit contact A (213) is electrically connected with the circuit breaking controller (3) through the round hole.
4. The turbine worm speed reducer with the overload protection structure according to claim 3, wherein the circuit connecting member (23) comprises a fixing ring (231) fixed at one end of the ring-shaped table (224), two annular grooves are formed in the inner wall of the fixing ring (231), a plurality of cables (233) are distributed in the annular grooves, circuit contacts B (234) are fixedly welded at two ends of each cable (233), two annular conducting strips (232) are welded on the outer wall of the fixing ring (231), and a closed loop formed after the circuit contacts B (234) at two ends of the plurality of cables (233) are connected is electrically connected with the annular conducting strips (232).
5. The turbine worm speed reducer with the overload protection structure according to claim 4, wherein the circuit breaking device (25) comprises a limiting block (254) which is matched with the outer wall of the driving shaft (24) through a flat key, a rotating seat (251) is arranged at one end of the limiting block (254), the limiting block (254) is fixed at the inner center position of the rotating seat (251) through a bolt, a plurality of rectangular grooves are formed in the outer wall of the rotating seat (251), a supporting component (253) is matched in the rectangular grooves in a sliding mode, a compression spring (255) is arranged between one end face of the supporting component (253) and the end face of the limiting block (254), and a sealing cover (252) is fixedly installed at the opening end of the rotating seat (251) through a bolt.
6. The turbine worm speed reducer with the overload protection structure as claimed in claim 5, wherein the support assembly (253) comprises a support block (2531) slidably fitted in the rectangular groove, an arc-shaped limit plate (2532) is fixedly welded to one end surface of the support block (2531), the arc-shaped limit plate (2532) and the rotating seat (251) are matched mechanisms, a rectangular conductive sheet (2533) is embedded into the other end of the support block (2531), and the rectangular conductive sheet (2533) and the circuit contact B (234) are matched mechanisms.
7. The turbine worm speed reducer with overload protection structure as claimed in claim 6, wherein the top end of the supporting block (2531) is provided with an inclination angle, and the contact surface of the rectangular groove and the supporting block (2531) is also provided with an inclination angle.
8. The turbine worm speed reducer with the overload protection structure according to any one of claims 2 to 7, wherein the overload protection mechanism (2) further comprises a driven shaft (26) with one end slidably fitted with the connecting shaft A (221), a return spring (27) is arranged between the driven shaft (26) and the connecting shaft A (221), and a limit ring is arranged on the inner wall of the transmission shaft (222) and close to one end of the driven shaft (26).
9. The turbine worm reducer with the overload protection structure as claimed in claim 8, wherein one end of the connecting shaft A (221) is provided with a cross groove, one end of the driven shaft (26) is fixedly clamped with a cross rod, and the cross rod is in sliding fit in the cross groove.
10. The turbine worm speed reducer with the overload protection structure as claimed in claim 9, wherein a conical groove is formed in one end surface of the driven shaft (26), and a latch with inclined surfaces on two sides is arranged at the bottom of the conical groove.
11. The turbine worm reducer with the overload protection structure as claimed in claim 10, wherein one end of the driving shaft (24) is fixedly clamped with a conical head, the conical head and the conical groove are matching mechanisms, the conical head is provided with a plurality of tooth sockets, and the tooth sockets and the teeth are matching mechanisms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111430303.3A CN114039457A (en) | 2021-11-29 | 2021-11-29 | Worm gear speed reducer with overload protection structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111430303.3A CN114039457A (en) | 2021-11-29 | 2021-11-29 | Worm gear speed reducer with overload protection structure |
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| CN114039457A true CN114039457A (en) | 2022-02-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117588540A (en) * | 2024-01-18 | 2024-02-23 | 江苏泰之星减速机有限公司 | R series helical gear reducer with overload protection |
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2021
- 2021-11-29 CN CN202111430303.3A patent/CN114039457A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117588540A (en) * | 2024-01-18 | 2024-02-23 | 江苏泰之星减速机有限公司 | R series helical gear reducer with overload protection |
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Application publication date: 20220211 |