CN111980876A - Memory alloy type electric heating push rod - Google Patents
Memory alloy type electric heating push rod Download PDFInfo
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- CN111980876A CN111980876A CN202010985551.3A CN202010985551A CN111980876A CN 111980876 A CN111980876 A CN 111980876A CN 202010985551 A CN202010985551 A CN 202010985551A CN 111980876 A CN111980876 A CN 111980876A
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- push rod
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- main spring
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- 229910001285 shape-memory alloy Inorganic materials 0.000 title claims abstract description 46
- 238000005485 electric heating Methods 0.000 title claims abstract description 16
- 238000010438 heat treatment Methods 0.000 claims abstract description 25
- 239000000956 alloy Substances 0.000 claims abstract description 23
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 3
- 239000013013 elastic material Substances 0.000 claims abstract description 3
- 239000010959 steel Substances 0.000 claims abstract description 3
- 238000004904 shortening Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
- F03G7/06—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like
- F03G7/065—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like using a shape memory element
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Springs (AREA)
Abstract
A memory alloy type electric heating push rod mainly comprises a frame, a power head, a connecting plate, a main push rod, an auxiliary spring, a main spring, an electric auxiliary heating device and a connecting terminal, wherein the main spring is made of memory alloy materials, the auxiliary spring is made of common steel or other elastic materials, when the main spring is heated and the temperature reaches or exceeds the jump temperature, the deformation elastic force of the main spring exceeds the elastic force of the auxiliary spring to push out the power head, and when the temperature of the main spring is reduced to be below the jump temperature, the deformation elastic force of the main spring is smaller than the elastic force of the auxiliary spring to retract the power head; the electric heating push rod driven by the structure has larger thrust and longer push-out stroke.
Description
Technical Field
The invention relates to the field of electric push rod manufacturing, in particular to a memory alloy type electric heating push rod.
Background
1. Electric putter that exists on the market. See fig. 1, mainly comprises a driving motor (1), a reduction gear mechanism (2), a nut (3), a screw rod (4), a push rod (5), a power head (6) and the like. After the motor in the electric push rod is decelerated by the gear mechanism, the pair of screw nuts are driven to change the rotary motion of the motor into linear motion, and the extension and retraction of the push rod are completed by utilizing the forward and reverse rotation of the motor.
When the direct-current power supply is connected in the forward direction, the motor drives the push rod power head to push out to reach the maximum stroke, after the electric push rod is powered off, the power head stops at the maximum stroke position, and only when the direct-current power supply is connected in the reverse direction, the power head can retract. That is, retraction of the powerhead must be accomplished by reversing the DC power supply.
The electric push rod is not suitable for being applied to certain scenes which require that the power head can be automatically retracted after the power supply is cut off.
2. The push-out electromagnet in the market is shown in figure 2 and mainly comprises a frame (1), an electromagnetic coil (2), a push-out iron core (3), a power head (4), a recovery spring (5) and the like, when the electromagnetic coil is electrified, the magnetic force generated by the coil exceeds the elastic force of the recovery spring to push out the iron core and the power head, when the power is off, the magnetic force of the coil disappears, and the recovery spring enables the iron core and the power head to retract.
The push-out electromagnet has two disadvantages, namely that the push-out stroke is not long enough; secondly, the thrust is not large enough, and especially the initial thrust is weaker.
Disclosure of Invention
The invention aims to overcome the defects that the power head of the conventional electric push rod cannot automatically retract after the power supply is cut off and the defects that the stroke of an electromagnet is too short and the thrust is not high, and provides a memory alloy type electric heating push rod.
A memory alloy type electric heating push rod mainly structurally comprises a frame, a power head, a connecting plate, a main push rod, an auxiliary push rod, a main spring, an auxiliary spring, an electric auxiliary heating device and a wiring terminal.
The main spring is made of memory alloy material, and the auxiliary spring is made of common steel or other elastic materials.
The main spring of the memory alloy material is heated to reach or exceed the jump temperature, and the deformation elasticity of the main spring exceeds the elasticity of the auxiliary spring, so that the power head is pushed out.
The temperature of a main spring of the memory alloy material is reduced and is lower than the jump temperature of the main spring, and the deformation elasticity of the main spring is smaller than the elasticity of an auxiliary spring, so that the power head retracts.
The main spring is heated to reach or exceed the jump temperature, and can deform along the extension direction or the shortening direction.
The main push rod is rigidly connected with the auxiliary push rod through a connecting plate, and the main push rod and the auxiliary push rod are integrated to slide in a push rod sliding hole of the frame.
One end of each of the main spring and the auxiliary spring is fixedly connected with the connecting plate, and the other end of each of the main spring and the auxiliary spring is fixedly connected with the frame.
The auxiliary push rod can be parallel to the main push rod, can also be coaxial with the main push rod, and can also combine the main push rod and the auxiliary push rod into the same push rod.
The memory alloy type electric heating push rod can be heated by directly supplying current to the main spring, and can also be heated by arranging an electric auxiliary heating device beside the main spring.
If the main spring is heated in a mode of directly supplying current to the main spring, the wiring terminal is connected with two ends of the main spring and then connected with a driving power supply.
If the temperature is raised by arranging the electric auxiliary heating device beside the main spring, the wiring terminal is connected with two ends of the electric auxiliary heating device and then connected with the driving power supply.
It should be noted that:
1. the memory alloy electric heating push rod can only be applied to a normal temperature environment and cannot be applied to a high temperature environment.
2. Since the temperature of the main spring of the memory alloy material is increased or decreased for a certain time, the push-out or retraction of the memory alloy type electro-thermal push rod is delayed for a certain time.
The invention has the beneficial effects that:
1. the power head of the memory alloy electric heating push rod can automatically retract once the power supply is cut off, and the reverse connection of a direct current power supply is not needed.
2. The memory alloy type electric heating push rod can generate larger thrust and has longer push-out stroke.
Description of the drawings:
fig. 1 is a schematic diagram of a basic structure of a commercial electric push rod, and reference numerals in fig. 1 include: 1 is a driving motor, 2 is a reduction gear mechanism, 3 is a nut, 4 is a screw, 5 is a push rod, and 6 is a power head.
Fig. 2 is a schematic diagram of the basic structure of a push-out type electromagnet on the market, and the reference numbers of fig. 2 comprise: 1 is a frame, 2 is an electromagnetic coil, 3 is a push-out iron core, 4 is a power head, and 5 is a return spring.
Fig. 3 is a schematic diagram of one of the basic structures and a first embodiment of the present invention, and the reference numerals in fig. 3 include: the power head is characterized in that 1 is a frame, 1-1 is a push rod sliding hole in the frame, 2 is a power head, 3 is a connecting plate, 4 is a main push rod, 4-1 is an auxiliary push rod, 5 is an auxiliary spring, 6 is a main spring made of memory alloy material, 6-1 is a connecting terminal of the main spring, 8 is a connecting terminal, and the main spring 6 is heated to reach or exceed a jump temperature and deforms along the extension direction to push out the power head.
FIG. 4 is a schematic diagram of a second basic structure and a second embodiment of the present invention, and FIG. 4 is similar to FIG. 3, except that the temperature of the main spring of the memory alloy material is raised by an electric auxiliary heating device 7, and 7-1 is a terminal of the electric auxiliary heating device.
Fig. 5 is a schematic diagram of a third basic structure and a third embodiment of the present invention, and reference numerals in fig. 5 include: 1 is the frame, 2 is the unit head, 3 is the connecting plate, 4 is the main push rod, 4-1 is vice push rod, 5 is vice spring, 6 is the main spring, 7 is the electricity and assists the hot device, 7-1 is the binding post of the hot device of electricity assistance, 8 is binding post, its characteristics are: the main push rod and the auxiliary push rod are coaxially connected through a connecting plate; and secondly, the main spring generates shortened deformation elasticity due to temperature rise to push the power head.
FIG. 6 is a diagram of the fourth basic structure and the fourth embodiment of the present invention, and the reference numerals in FIG. 6 include: the power head is characterized in that the main push rod 4 and the auxiliary push rod 4-1 are combined into a thrust rod, the auxiliary spring 5 is sleeved on the thrust rod, the hard insulating sleeve 9 is sleeved outside the auxiliary spring, the main spring 6 made of memory alloy material is sleeved outside the insulating sleeve, and the main spring generates stretching deformation elasticity due to temperature rise to push out the power head.
FIG. 7 is a schematic diagram of the fifth basic structure and the fifth embodiment of the present invention, and the reference numerals in FIG. 7 include: the power head is characterized in that the main spring and the auxiliary spring do not take a spiral shape but take a shape of a curved arc line, and the main spring overcomes the elastic force of the auxiliary spring due to extension deformation caused by temperature rise to push the power head.
Fig. 8 is a schematic view of the sixth basic structure and the sixth embodiment of the present invention, and fig. 8 is similar to fig. 7 except that the main spring 6 is made of a two-way memory alloy material without a secondary spring. The electric auxiliary heating device is electrified, and the power head is pushed out by the stretching deformation elastic force generated by the temperature rise of the main spring 6 of the memory alloy; when the electric auxiliary heating device is powered off, the main spring 6 of the memory alloy is cooled to generate bending deformation elasticity so as to retract the push rod and the power head.
Detailed Description
The invention will be further explained with reference to the figures and examples,
the first embodiment is as follows:
as shown in fig. 3, the present embodiment mainly includes a frame 1, a frame push rod slide hole 1-1, a power head 2, a connection plate 3, a main push rod 4, an auxiliary push rod 4-1, an auxiliary spring 5, a main spring 6 made of a memory alloy material, and a connection terminal 8.
The connecting plate 3 is rigidly connected with the main push rod 4 and the auxiliary push rod 5, wherein the main push rod 4 is connected with one end face of the connecting plate 3, the auxiliary push rod 5 is connected with the other end face of the connecting plate 3, the auxiliary springs 5 are sleeved on the main push rod 4, two ends of each auxiliary spring are pressed on the connecting plate 3 and the inner end face of the frame 1, the upper main spring 6 and the lower main spring 6 are made of a memory alloy wire and are sleeved on the auxiliary push rods 4-1 (in the embodiment, two auxiliary push rods 4-1 are arranged in parallel), and at normal temperature, the main push rod 4 and the power head 2 retract due to the extension elasticity of the auxiliary springs 5.
The main spring made of the memory alloy material is electrified through the push rod wiring terminal 8, and when the temperature of the main spring rises to reach or exceed the jump temperature of the main spring, the extension deformation elastic force of the main spring forces the auxiliary spring to be compressed, so that the main push rod 4 and the power head 2 extend out.
After the current of the main spring of the memory alloy material is cut off, when the temperature of the main spring is reduced to be lower than the jump temperature, the extension elasticity of the auxiliary spring forces the main spring of the memory alloy material to be compressed, so that the main push rod 4 and the power head 2 are retracted.
In this embodiment, the main spring 6 is heated by directly supplying an electric current to the main spring 6.
Example two:
as shown in fig. 4, this embodiment is similar to the first embodiment, and the difference is that the temperature of the main spring 6 is raised by installing an electric auxiliary heating device 7 on the side of the main spring 6, and the electric auxiliary heating device 7 heats the main spring 6, which is almost the same as the first embodiment, and need not be described herein.
Example three:
referring to fig. 5, in this embodiment, a main push rod 4 and an auxiliary push rod 4-1 are connected in a coaxial manner by a connecting plate 3, two ends of a main spring 6 made of a memory alloy material are respectively and fixedly connected with a frame 1 and the connecting plate 3, and two ends of an auxiliary spring 5 are also respectively and fixedly connected with the frame 1 and the connecting plate 3, in this embodiment, the main spring 6 made of the memory alloy material is heated by an electric auxiliary heating device 7, and the power head is pushed out by the shortened deformation generated by the main spring 6, of course, in this embodiment, the main spring 6 can also be directly electrified by being connected with a push rod connecting terminal 8 to realize heating, and the rest is similar to the first embodiment and needs not be described herein.
Example four:
referring to fig. 6, the present embodiment is different from the previous embodiments in that a main spring 6 and an auxiliary spring 5 made of memory alloy material are in a sleeved form, the connecting plate 3 is installed in the main push rod 4, the auxiliary spring 5 is sleeved on the main push rod 4 and both ends of the auxiliary spring are respectively connected with the connecting plate 3 and the frame 1, a hard insulating sleeve 9 is sleeved outside the auxiliary spring 5, the main spring 6 made of memory alloy material is sleeved outside the insulating sleeve 9, both ends of the main spring 6 are also respectively connected with the connecting plate 3 and the frame 1, and the main spring 6 is heated in an electrically assisted manner.
When the temperature of the main spring of the memory alloy material reaches or exceeds the transition temperature, the extension deformation elasticity of the main spring 6 of the memory alloy material forces the auxiliary spring 5 to be stretched, and the connecting plate 3 is pushed to enable the main push rod 4 and the power head 2 to extend out.
When the temperature of the main spring of the memory alloy material is reduced to be below the jump temperature, the auxiliary spring restores the shortened elastic force to force the main spring of the memory alloy material to be compressed, and the main push rod 4 and the power head 2 are retracted by drawing the connecting plate 3 in a contraction mode.
Example five:
as shown in fig. 7, the basic structure of the present embodiment: the device comprises a frame 1, a power head 2, a connecting plate 3, a main push rod 4, an auxiliary spring 5, a main spring 6, an electric auxiliary heating device 7, a connecting terminal of the electric auxiliary heating device 7-1 and a connecting terminal 8. The main spring 6 and the auxiliary spring 5 are realized by a spring plate structure in a curved arc shape instead of a spiral shape. The two ends of the main spring 6 and the auxiliary spring 5 are both connected with the connecting plate and the frame, the electric auxiliary heating device 7 is electrified for heating, and the memory alloy main spring 6 heats up to generate stretching deformation elasticity to push out the power head 2; the electric auxiliary heating device 7 is powered off, and after the main spring 6 of the memory alloy cools down, the elastic force of the auxiliary spring 5 causes the push rod and the power head to retract.
Example six:
referring to fig. 8, the basic structure of the present embodiment is similar to that of the fifth embodiment, except that the main spring 6 is made of a two-way memory alloy material, and is stretched above the high transition temperature and bent below the low transition temperature, so that a secondary spring is not required. The electric auxiliary heating device 7 is electrified for heating, and the power head is pushed out by the stretching deformation elastic force generated by the temperature rise of the main spring 6 of the memory alloy; when the electric auxiliary heating device is powered off, the main spring 6 of the memory alloy is cooled to generate bending deformation elasticity so as to retract the push rod and the power head.
The foregoing is a preferred embodiment of the present invention, and the basic principles, principal features and advantages of the invention are shown and described. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the present invention, but various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.
Claims (7)
1. A memory alloy type electric heating push rod mainly comprises a frame (1), a power head (2), a connecting plate (3), a main push rod (4), an auxiliary push rod (4-1), an auxiliary spring (5), a main spring (6), an electric auxiliary heating device (7) and a wiring terminal (8), and is characterized in that the main spring (6) is made of memory alloy materials, the auxiliary spring (5) is made of common steel or other elastic materials, when the main spring (6) is heated and rises to reach or exceed a jump temperature, the deformation elasticity of the main spring exceeds the elasticity of the auxiliary spring (5) to push out the power head (2), and when the temperature of the main spring (6) is reduced to be below the jump temperature, the deformation elasticity of the main spring is smaller than the elasticity of the auxiliary spring (5) to retract the power head (2).
2. The memory alloy type electric heating putter as claimed in claim 1, wherein: the main spring (6) is heated to reach or exceed the jump temperature, and can deform along the extension direction or the shortening direction.
3. The memory alloy type electric heating putter as claimed in claim 1, wherein: the main push rod (4) is fixedly connected with the auxiliary push rod (4-1) through the connecting plate (3), and the connecting plate (3) moves integrally along with the main push rod (4) and the auxiliary push rod (4-1).
4. The memory alloy type electric heating putter as claimed in claim 1, wherein: the auxiliary push rod (4-1) can be parallel to the main push rod (4), can also be coaxial with the main push rod (4), and can also combine the main push rod (4) and the auxiliary push rod (4-1) into the same push rod.
5. The memory alloy type electric heating putter as claimed in claim 1, wherein: the temperature of the main spring (6) can be directly heated by current, or an electric auxiliary heating device (7) can be arranged beside the main spring (6).
6. The temperature rise of the main spring (6) according to claim 5 is directly by means of electric current, characterized in that: the connecting terminal (8) is connected with two ends (6-1) of the main spring (6), and the connecting terminal (8) is further connected with a driving power supply.
7. The main spring (6) is warmed up according to claim 5 by providing an electric auxiliary heating device (7) beside the main spring, characterized in that: the connecting terminal (8) is connected with two ends (7-1) of the electric auxiliary heating device (7), and the connecting terminal (8) is further connected with a driving power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010985551.3A CN111980876A (en) | 2020-09-18 | 2020-09-18 | Memory alloy type electric heating push rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010985551.3A CN111980876A (en) | 2020-09-18 | 2020-09-18 | Memory alloy type electric heating push rod |
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| Publication Number | Publication Date |
|---|---|
| CN111980876A true CN111980876A (en) | 2020-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010985551.3A Pending CN111980876A (en) | 2020-09-18 | 2020-09-18 | Memory alloy type electric heating push rod |
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| CN (1) | CN111980876A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2136522Y (en) * | 1992-10-19 | 1993-06-16 | 中国科学院金属研究所 | Marmem temp. controller |
| US20100038569A1 (en) * | 2008-08-13 | 2010-02-18 | Beijing Hailin Auto Control Equipment Co., Ltd. | Electric control valve |
| CN201437860U (en) * | 2009-05-04 | 2010-04-14 | 北京海林自控设备有限公司 | Electric control valve |
| CN202513077U (en) * | 2012-01-06 | 2012-10-31 | 朝阳百事特乐电子科技有限公司 | Temperature protector with repeated memory capability |
| CN204372306U (en) * | 2014-11-18 | 2015-06-03 | 苏州西脉记忆合金有限公司 | Radiator Intelligent constant-temperature controller |
| CN106438244A (en) * | 2016-11-11 | 2017-02-22 | 湖北三江航天红林探控有限公司 | Shape memory alloy driving actuator and driving method thereof |
| CN109473875A (en) * | 2018-12-27 | 2019-03-15 | 兰州西脉记忆合金股份有限公司 | A kind of passive self-extinguishing switchgear |
| CN213928652U (en) * | 2020-09-18 | 2021-08-10 | 韩亚兰 | Memory alloy type electric heating push rod |
-
2020
- 2020-09-18 CN CN202010985551.3A patent/CN111980876A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2136522Y (en) * | 1992-10-19 | 1993-06-16 | 中国科学院金属研究所 | Marmem temp. controller |
| US20100038569A1 (en) * | 2008-08-13 | 2010-02-18 | Beijing Hailin Auto Control Equipment Co., Ltd. | Electric control valve |
| CN201437860U (en) * | 2009-05-04 | 2010-04-14 | 北京海林自控设备有限公司 | Electric control valve |
| CN202513077U (en) * | 2012-01-06 | 2012-10-31 | 朝阳百事特乐电子科技有限公司 | Temperature protector with repeated memory capability |
| CN204372306U (en) * | 2014-11-18 | 2015-06-03 | 苏州西脉记忆合金有限公司 | Radiator Intelligent constant-temperature controller |
| CN106438244A (en) * | 2016-11-11 | 2017-02-22 | 湖北三江航天红林探控有限公司 | Shape memory alloy driving actuator and driving method thereof |
| CN109473875A (en) * | 2018-12-27 | 2019-03-15 | 兰州西脉记忆合金股份有限公司 | A kind of passive self-extinguishing switchgear |
| CN213928652U (en) * | 2020-09-18 | 2021-08-10 | 韩亚兰 | Memory alloy type electric heating push rod |
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