CN113738839A - Torque safety protection device for screw rod transmission mechanism - Google Patents
Torque safety protection device for screw rod transmission mechanism Download PDFInfo
- Publication number
- CN113738839A CN113738839A CN202111160696.0A CN202111160696A CN113738839A CN 113738839 A CN113738839 A CN 113738839A CN 202111160696 A CN202111160696 A CN 202111160696A CN 113738839 A CN113738839 A CN 113738839A
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- Prior art keywords
- screw rod
- bevel gear
- transmission
- torque
- transmission mechanism
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H35/00—Gearings or mechanisms with other special functional features
- F16H35/10—Arrangements or devices for absorbing overload or preventing damage by overload
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/2021—Screw mechanisms with means for avoiding overloading
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H2025/2059—Superposing movement by two screws, e.g. with opposite thread direction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H2025/2062—Arrangements for driving the actuator
- F16H2025/2084—Perpendicular arrangement of drive motor to screw axis
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H2025/2062—Arrangements for driving the actuator
- F16H2025/2093—Arrangements for driving the actuator using conical gears
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H35/00—Gearings or mechanisms with other special functional features
- F16H35/10—Arrangements or devices for absorbing overload or preventing damage by overload
- F16H2035/106—Monitoring of overload
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Transmission Devices (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention relates to the technical field of safety protection of lifting screw rod nut devices, in particular to a torque safety protection device for a screw rod transmission mechanism, which comprises a support and the screw rod transmission mechanism, wherein a driving motor is installed on the support, the output end of the driving motor is in transmission connection with the input end of a speed reducer, the output end of the speed reducer is provided with a torque limiter, the output end of the torque limiter is provided with a first bevel gear, and meanwhile, the output end of the speed reducer also comprises a coaxially arranged encoder; the first conical gear is in transmission connection with the screw rod transmission mechanism, and the screw rod transmission mechanism is in transmission connection with a load assembly; the screw rod transmission mechanism comprises a first bearing seat, a transmission shaft, a second bevel gear, a third bevel gear, a second bearing seat, a screw rod, a fourth bevel gear and a nut transmission plate; the problem of through the mode that uses constant torque motor, its price is expensive, ordinary transmission mode is difficult again to realize this function is solved.
Description
Technical Field
The invention relates to the technical field of safety protection of lifting screw rod nut devices, in particular to a torque safety protection device for a screw rod transmission mechanism.
Background
The lifting screw rod nut transmission mechanism device converts rotary motion into linear motion, is the most commonly used transmission element on tool machinery and precision machinery, and has the characteristics of high precision, reversibility and high efficiency. The lifting screw nut transmission mechanism works to drive the load part loaded on the lifting screw nut transmission mechanism to lift and move.
However, in the prior art, when the lifting screw rod transmission mechanism is loaded in the running transmission process, constant transmission power needs to be ensured, namely, the screw rod needs constant torque, and the transmission between the power source and the transmission mechanism needs to be cut off in time after the lifting screw rod transmission mechanism is overloaded. The constant-torque motor is expensive, and the function is difficult to realize in a common transmission mode. There is therefore a great need to develop a torque safety device for a screw drive to solve the above problems.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a torque safety protection device for a screw rod transmission mechanism, which solves the problems that the constant torque motor is expensive and the common transmission mode is difficult to realize the function.
The invention is realized by the following technical scheme:
a torque safety protection device for a screw rod transmission mechanism comprises a support and the screw rod transmission mechanism, wherein a driving motor is installed on the support, the output end of the driving motor is in transmission connection with the input end of a speed reducer, the output end of the speed reducer is provided with a torque limiter, the output end of the torque limiter is provided with a first bevel gear, and meanwhile, the output end of the speed reducer further comprises a coaxially arranged encoder;
the first bevel gear is in transmission connection with the screw rod transmission mechanism, and the screw rod transmission mechanism is connected with a load assembly in a transmission mode.
Preferably, the torque limiter is a friction type or electromagnetic type limiter.
Preferably, the screw rod transmission mechanism comprises a first bearing seat, a transmission shaft, a second bevel gear, a third bevel gear, a second bearing seat, a screw rod, a fourth bevel gear and a nut transmission plate;
the first bearing seat is transversely installed on the support, the transmission shaft is rotatably installed in the first bearing seat, the middle of the transmission shaft is provided with the second bevel gear, the second bevel gear is meshed with the first bevel gear, and the left end and the right end of the transmission shaft are provided with the third bevel gear;
the left side and the right side of the support are respectively vertically provided with the second bearing seats, the screw rod is rotatably arranged in the second bearing seats, the upper end of the screw rod is provided with the fourth bevel gear, the third bevel gear is meshed with the fourth bevel gear, and the thread part of the screw rod is in threaded connection with the nut transmission plate.
Preferably, the bearing in the first bearing seat and the transmission shaft, and the bearing in the second bearing seat and the screw rod are connected in an interference manner.
Preferably, the load assembly comprises a connecting plate and a load member; the left and right sides nut driving plate is last to be connected with through the bolt is dismantled the connecting plate, the bottom of connecting plate is equipped with the load piece.
Preferably, the driving motor is a servo motor.
Preferably, the output end of the speed reducer further comprises a torque sensor coaxially arranged.
Preferably, still include control terminal and buzzer siren, control terminal respectively with driving motor the torque limiter the encoder torque sensor with buzzer siren electrical property links to each other.
The invention has the beneficial effects that:
the invention adopts the design and the use of the structure, solves the problems that the price is high by using a constant torque motor, and the function is difficult to realize by using a common transmission mode;
the invention has novel structure, reasonable design and strong practicability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a block diagram of the present invention.
In the figure: the device comprises a support 1, a drive motor 2, a speed reducer 3, a torque limiter 4, a first bevel gear 5, a screw rod transmission mechanism 6, a first bearing seat 61, a transmission shaft 62, a second bevel gear 63, a third bevel gear 64, a second bearing seat 65, a screw rod 66, a fourth bevel gear 67, a nut transmission plate 68, a load assembly 7, a connecting plate 71 and a load assembly 72.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present embodiment specifically discloses and provides a technical scheme of a torque safety protection device for a screw rod transmission mechanism, including a bracket and the screw rod transmission mechanism, where the bracket is mounted with a driving motor, an output end of the driving motor is connected with an input end of a speed reducer in a transmission manner, an output end of the speed reducer is provided with a torque limiter, an output end of the torque limiter is provided with a first bevel gear, and an output end of the speed reducer further includes a coaxially arranged encoder, where the encoder is specifically a rotational speed encoder; the driving motor and the speed reducer are used as power sources, the output power of the driving motor can be stably output after being reduced through the arranged speed reducer, and the encoder can monitor the power rotating speed output by the speed reducer in real time through the arranged torque limiter and the encoder to obtain rotating speed data; when the torque value during operation exceeds the slipping torque of the torque limiter, the torque limiter slips, power transmission is finished, namely the transmission system is ensured to be stably transmitted within the range of plus or minus 5Nm, and when the transmission torque of the equipment is higher than the set range, the torque limiter slips, and transmission between the power source and the screw rod transmission mechanism is cut off.
The first bevel gear is in transmission connection with the screw rod transmission mechanism, and the screw rod transmission mechanism is connected with a load assembly in a transmission mode.
Specifically, the torque limiter is a friction type or electromagnetic type limiter.
Specifically, the screw rod transmission mechanism comprises a first bearing seat, a transmission shaft, a second bevel gear, a third bevel gear, a second bearing seat, a screw rod, a fourth bevel gear and a nut transmission plate; the first bearing seat is transversely installed on the support, the transmission shaft is rotatably installed in the first bearing seat, the middle of the transmission shaft is provided with the second bevel gear, the second bevel gear is meshed with the first bevel gear, and the left end and the right end of the transmission shaft are provided with the third bevel gear; the left side and the right side of the support are respectively vertically provided with the second bearing seats, the screw rod is rotatably arranged in the second bearing seats, the upper end of the screw rod is provided with the fourth bevel gear, the third bevel gear is meshed with the fourth bevel gear, and the thread part of the screw rod is in threaded connection with the nut transmission plate. When the screw rod transmission mechanism works specifically, power on the output end of the torque limiter is transmitted to the transmission shaft through the matching engagement of the first bevel gear and the second bevel gear, the power on the transmission shaft is continuously transmitted to the screw rod through the matching engagement of the third bevel gear and the fourth bevel gear, the screw rod is driven to rotate, and the load assembly is driven to perform lifting work through the thread transmission between the screw rod and the nut transmission plate.
Specifically, the bearing in the first bearing seat and the transmission shaft, the bearing in the second bearing seat and the screw rod are connected in an interference mode, and the stability of the screw rod during rotation is further improved.
Specifically, the load assembly comprises a connecting plate and a load piece; the left and right sides can dismantle through the bolt on the nut driving plate and be connected with the connecting plate, the bottom of connecting plate is equipped with the load piece is convenient for carry out demountable installation to the load piece.
Specifically, the driving motor is a servo motor.
Specifically, the output end of the speed reducer further comprises a torque sensor which is coaxially arranged, so that the torque of the output power of the speed reducer can be monitored in real time.
The torque limiter is characterized by further comprising a control terminal and a buzzer alarm, wherein the control terminal is respectively connected with the driving motor, the torque limiter, the encoder, the torque sensor and the buzzer alarm in an electrical mode.
The working principle is as follows: when the driving motor works, the screw rod transmission mechanism is driven to perform lifting work through the driving belt, the aim of monitoring and collecting torque signals and rotating speed signals of output power can be achieved through the encoder and the torque sensor respectively, after the single chip microcomputer on the control terminal analyzes the torque signals and the rotating speed signals, if the torque signals exceed the preset threshold value of the torque sensor or the rotating speed signals exceed the preset threshold value of the encoder, the control terminal can send signals to the torque limiter, the torque limiter slips, the transmission of the power is finished, the transmission between the power source and the screw rod transmission mechanism can be cut off in time after overload is achieved, meanwhile, the signals can be sent to the buzzer alarm, the buzzer alarm generates buzzer alarm reminding, and faults can be monitored and checked in real time.
The invention solves the problems that the constant torque motor is expensive and the common transmission mode is difficult to realize the function by adopting the design and the use of the structure, when the transmission torque of the equipment is higher than the set range, the torque limiter slips, the transmission between the power source and the screw rod transmission mechanism is cut off, and the encoder or the torque sensor feeds back data and gives an alarm, thereby achieving the purposes of monitoring and troubleshooting in real time.
The control mode of the electrical component is controlled by a singlechip of a control terminal matched with the control mode, and a control circuit can be realized by simple programming of technicians in the field, which belongs to the common knowledge in the field, only the control mode is used without improvement, and the control mode is mainly used for protecting a mechanical device, so the control mode and the circuit connection are not described in detail in the invention.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. A torque safety protection device for a screw rod transmission mechanism comprises a support and the screw rod transmission mechanism, and is characterized in that a driving motor is mounted on the support, the output end of the driving motor is in transmission connection with the input end of a speed reducer, the output end of the speed reducer is provided with a torque limiter, the output end of the torque limiter is provided with a first bevel gear, and meanwhile, the output end of the speed reducer also comprises a coaxially arranged encoder;
the first bevel gear is in transmission connection with the screw rod transmission mechanism, and the screw rod transmission mechanism is connected with a load assembly in a transmission mode.
2. The torque safety device for the lead screw drive according to claim 1, wherein the torque limiter is a friction type or electromagnetic type limiter.
3. The torque safety protection device for the screw drive according to claim 1, wherein the screw drive comprises a first bearing seat, a transmission shaft, a second bevel gear, a third bevel gear, a second bearing seat, a screw rod, a fourth bevel gear and a nut transmission plate;
the first bearing seat is transversely installed on the support, the transmission shaft is rotatably installed in the first bearing seat, the middle of the transmission shaft is provided with the second bevel gear, the second bevel gear is meshed with the first bevel gear, and the left end and the right end of the transmission shaft are provided with the third bevel gear;
the left side and the right side of the support are respectively vertically provided with the second bearing seats, the screw rod is rotatably arranged in the second bearing seats, the upper end of the screw rod is provided with the fourth bevel gear, the third bevel gear is meshed with the fourth bevel gear, and the thread part of the screw rod is in threaded connection with the nut transmission plate.
4. The torque safety protection device for the lead screw transmission mechanism according to claim 3, wherein the bearing in the first bearing seat and the transmission shaft and the bearing in the second bearing seat and the lead screw are connected in an interference manner.
5. The torque safety device for a lead screw drive of claim 3, wherein the load assembly comprises a connection plate and a load member; the left and right sides nut driving plate is last to be connected with through the bolt is dismantled the connecting plate, the bottom of connecting plate is equipped with the load piece.
6. The torque safety device for the lead screw transmission according to claim 1, wherein the driving motor is a servo motor.
7. The torque safety protection device for the lead screw transmission mechanism according to claim 1, wherein the output end of the speed reducer further comprises a torque sensor coaxially arranged.
8. The torque safety protection device for the lead screw transmission mechanism according to claim 7, further comprising a control terminal and a buzzer alarm, wherein the control terminal is electrically connected with the driving motor, the torque limiter, the encoder, the torque sensor and the buzzer alarm respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111160696.0A CN113738839A (en) | 2021-09-30 | 2021-09-30 | Torque safety protection device for screw rod transmission mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111160696.0A CN113738839A (en) | 2021-09-30 | 2021-09-30 | Torque safety protection device for screw rod transmission mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113738839A true CN113738839A (en) | 2021-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111160696.0A Pending CN113738839A (en) | 2021-09-30 | 2021-09-30 | Torque safety protection device for screw rod transmission mechanism |
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| Country | Link |
|---|---|
| CN (1) | CN113738839A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116885892A (en) * | 2023-08-23 | 2023-10-13 | 北京特种机械研究所 | Electric drive double push rod synchronous extending device |
-
2021
- 2021-09-30 CN CN202111160696.0A patent/CN113738839A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116885892A (en) * | 2023-08-23 | 2023-10-13 | 北京特种机械研究所 | Electric drive double push rod synchronous extending device |
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