CN114938191A - Sectional type push rod device adopting plastic nut and machining method thereof - Google Patents
Sectional type push rod device adopting plastic nut and machining method thereof Download PDFInfo
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- CN114938191A CN114938191A CN202210707215.1A CN202210707215A CN114938191A CN 114938191 A CN114938191 A CN 114938191A CN 202210707215 A CN202210707215 A CN 202210707215A CN 114938191 A CN114938191 A CN 114938191A
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- 239000004033 plastic Substances 0.000 title claims abstract description 365
- 229920003023 plastic Polymers 0.000 title claims abstract description 365
- 238000000034 method Methods 0.000 title claims description 17
- 238000003754 machining Methods 0.000 title description 3
- 239000002184 metal Substances 0.000 claims abstract description 156
- 229910052751 metal Inorganic materials 0.000 claims abstract description 156
- 230000005540 biological transmission Effects 0.000 claims abstract description 50
- 238000000926 separation method Methods 0.000 claims abstract description 44
- 239000003292 glue Substances 0.000 claims description 34
- 230000009467 reduction Effects 0.000 claims description 33
- 238000012545 processing Methods 0.000 claims description 23
- 230000007246 mechanism Effects 0.000 claims description 20
- 239000000853 adhesive Substances 0.000 claims description 14
- 230000001070 adhesive effect Effects 0.000 claims description 14
- 230000033001 locomotion Effects 0.000 claims description 6
- 239000007767 bonding agent Substances 0.000 claims 2
- 238000010248 power generation Methods 0.000 abstract description 14
- 238000003672 processing method Methods 0.000 abstract description 5
- 238000002474 experimental method Methods 0.000 abstract description 2
- 239000004519 grease Substances 0.000 description 15
- 230000001050 lubricating effect Effects 0.000 description 15
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 9
- 229910052802 copper Inorganic materials 0.000 description 9
- 239000010949 copper Substances 0.000 description 9
- 230000003068 static effect Effects 0.000 description 9
- 230000000903 blocking effect Effects 0.000 description 7
- 239000003921 oil Substances 0.000 description 7
- 238000010276 construction Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920006351 engineering plastic Polymers 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 238000007514 turning Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S20/00—Supporting structures for PV modules
- H02S20/30—Supporting structures being movable or adjustable, e.g. for angle adjustment
- H02S20/32—Supporting structures being movable or adjustable, e.g. for angle adjustment specially adapted for solar tracking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Transmission Devices (AREA)
Abstract
The invention relates to a sectional type push rod device adopting a plastic nut, which comprises an input shaft, an upper shell, a lower shell, a transmission device, a screw rod, a plastic nut and a metal pipe, wherein the plastic nut is of a sectional type plastic nut structure and is formed by combining at least two sections or more than two sections of sectional plastic nuts, a separation gap is formed between every two adjacent sectional plastic nuts, and the at least two sections or more than two sections of sectional type plastic nuts of the sectional type plastic nut structure are simultaneously and fixedly connected with one end of the metal pipe through threads or fixedly connected with a pin or a screw or fixedly connected with a snap spring. The sectional type plastic nut structure has good self-lubricating performance, does not need frequent oiling, can not axially expand to death under the conditions of severe temperature environment with large temperature difference and bearing large load, and is particularly suitable for a push rod device of a solar power generation sun-tracking support, scientific experiments, desert or cold tropical environment and the like. The invention also relates to a processing method of the sectional type push rod device adopting the plastic nut.
Description
Technical Field
The invention belongs to the technical field of push rod devices, and particularly relates to a sectional type push rod device adopting a plastic nut and a processing method thereof, in particular to a push rod device suitable for a solar power generation sun-tracking support and a processing method thereof.
Background
The technology of generating electricity by using a solar power generation device is more and more commonly applied in the global scope, in order to maximize the utilization of solar energy by the solar power generation device, the existing technology adopts a solar sun-tracking support to realize the real-time adjustment of the lifting and/or the angle of a solar panel in the solar power generation device along with different spatial angle positions of the sun, and the lifting and/or the angle adjustment functions of the solar sun-tracking support are realized by adopting a push rod device. Because the outdoor environment in which the solar power generation device is used is severe, the solar power generation device needs to withstand an ambient temperature of-30 ℃ to 70 ℃ to work under normal conditions, the solar power generation device needs to work in strong wind, and the acting force of wind power on the solar power generation device is large, so that the use of the push rod devices is strictly required, and each set of push rod devices needs to be capable of bearing a static load of not less than 3 tons and simultaneously needs to be capable of bearing a dynamic load of not less than 1 ton.
The solar sun tracking bracket can normally work at the ambient temperature of minus 30 ℃ to 70 ℃, can bear static load of not less than 3 tons and bear dynamic load of not less than 1 ton, and has the service life of not less than 5000 hours. The design service life of the push rod device with the lifting and/or angle adjusting functions for realizing the solar sun-tracking support requires that the lifting and/or angle adjustment is more than 10000 times of circulation, wherein the screw rod and the nut play a vital role, and in order to reduce the abrasion of the screw rod and the nut in reciprocating spiral motion, the screw rod is usually made of metal materials, but more nuts usually adopt copper nuts and plastic nuts.
The following advantages exist for the copper nut: 1. the copper nut is used in a severe temperature environment with large temperature change, and has high strength and can bear large static load and dynamic load; 2. the copper spiral bus has small expansion coefficient, and the problem of axial expansion can not be caused along with the rise and the reduction of the environmental temperature. However, the copper nut has the following disadvantages: the copper nut has poor self-lubricating performance when used in a severe temperature environment with large temperature change, and under the dynamic load of 1 ton, the copper nut is lifted by 1 meter, the lifting frequency is less than 150 times, and the smooth movement of the copper nut and the screw rod in the process of screw transmission can be ensured only by frequently adding lubricating grease. If the lifting frequency reaches about 200 times without adding lubricating grease, the copper nut can be completely worn by the screw rod, so that the whole push rod device loses the working capacity. A solar power plant is provided with thousands of push rod devices, and lubricating grease is filled frequently, so that huge cost, manpower and material resources are required.
The advantages that exist for a plastic nut are: the lubricating grease has good self-lubricating performance, can satisfy the lubrication in the whole life cycle by adding the lubricating grease once, and can ensure the smoothness of the screw transmission process between the lubricating grease and the screw rod without frequently adding the lubricating oil. However, the plastic nut has the following disadvantages: the poor unable great dead load and the dynamic load of bearing of plastics material intensity, if reach through increasing single nut length and bear higher dead load and dynamic load, use under the great abominable temperature environment of temperature variation, can produce the axial and swell and die because plastics material linear expansion coefficient is big.
Therefore, how to utilize the advantages that the push rod device adopting the plastic nut has good self-lubricating performance and does not need frequent oiling can be solved, and the problem that the push rod device adopting the plastic nut can generate axial expansion under the driving of the screw rod under the conditions of severe temperature environment with large temperature change and bearing large load can be solved, which is a technical problem that the technical difficulty of the technical personnel in the field can not be solved for a long time.
Disclosure of Invention
The invention aims to provide a sectional type push rod device adopting a plastic nut, which has good self-lubricating performance, does not need frequent oiling, and can not generate axial expansion under severe temperature environments with large temperature difference and under the condition of bearing large load.
The second purpose of the invention is to provide a processing method of the sectional type push rod device adopting the plastic nut, which has good self-lubricating performance, does not need frequent oiling, and can not generate axial expansion under severe temperature environment with large temperature difference and large load bearing condition.
In order to solve the above problems, a technical solution for achieving the first object of the present invention is a sectional type push rod device using a plastic nut, including an input shaft, an upper housing, a lower housing, a transmission device, a screw rod, a plastic nut and a metal tube, wherein the upper housing and the lower housing are fixedly connected to form a reduction box and a space for accommodating the transmission device, the transmission device is a gear transmission mechanism or a worm and gear transmission mechanism, the input shaft has an exposed end located outside the reduction box and an extended end located inside the reduction box, the extended end of the input shaft is a tooth shaft or a worm, the tooth shaft or the worm at the input end is respectively engaged with a first-stage gear or a worm wheel of the transmission device, a last-stage gear or a worm wheel of the transmission device is fixedly connected or integrated with the screw rod to drive the screw rod to rotate, the plastic nut is spirally arranged on the screw rod, one end of the metal pipe is fixedly connected with the periphery of the plastic nut, and the screw rod drives the plastic nut to do reciprocating linear motion on the screw rod when rotating; the improvement is that:
the plastic nut is of a sectional type plastic nut structure, the sectional type plastic nut structure is formed by combining at least two sections or more than two sections of sectional plastic nuts, n is more than or equal to 2 and is a positive integer, a separation gap is formed between every two adjacent sectional plastic nuts, and the at least two sections or more than two sections of sectional type plastic nuts of the sectional type plastic nut structure are fixedly connected with one end of the metal pipe at the same time.
Further, at least two or more segments of the segmented plastic nut structure are fixedly connected with one end of the metal pipe through threads, or are fixedly connected with a clamp spring, or at least two or more segments of the segmented plastic nut structure are fixedly connected with one end of the metal pipe through a pin and/or a screw, and the rest segments of the segmented plastic nuts are fixedly connected with one end of the metal pipe through threads.
Furthermore, at least two or more sections of the sectional plastic nut structure are fixedly connected with a clamp spring at one end of the metal pipe, clamp springs are arranged at two ends of each sectional plastic nut, the clamp springs are clamped in clamp spring grooves formed in the inner wall of the metal pipe, one end of the first section of the sectional plastic nut abuts against the first clamp spring, and a separation gap delta is formed between the other end of the first section of the sectional plastic nut and the second clamp spring 1 One end of the second section of sectional plastic nut is abutted against the second snap spring, and a separation gap delta is arranged between the other end of the second section of sectional plastic nut and the third snap spring 2 One end of the nth section of the segmented plastic nut abuts against the nth snap spring, and a separation gap delta is arranged between the other end of the nth section of the segmented plastic nut and the (n + 1) th snap spring n (ii) a Each segment length range L of the segmented plastic nut after the plastic nut is segmented 1 、L 2 、…L n All are between 5mm and 50mm, and the spacing distance between the clamp spring grooves is greater than that of each segmented plastic nut D 1 、D 2 、…D n The separation gap delta between the segmented plastic nut and the clamp spring 1 、δ 2 、…δ n Are all larger than 0.05 mm.
Further, each length range L of the segmented plastic nut after the plastic nut is segmented 1 、L 2 、…L n All between 5mm to 50mm, adjacent separation clearance C that has between the segmentation plastic nut 1 、C 2 、…C n Are all larger than 0.05 mm.
Further, the major diameter phi 2 of the external thread of the screw rod is 15-35 mm, and the major diameter phi 4 of the internal thread of the plastic nut matched with the screw rod is 30-50 mm.
The driving motor is fixedly connected with the lower shell, a driving shaft of the driving motor is an input shaft of the reduction box body, an integrally formed annular boss is arranged on the outer end face of a motor end cover of the driving motor, a cap is arranged on the input shaft of the driving motor, the shape of a central hole of the cap is matched with the shape of the cross section of a corresponding matching part of the input shaft, a groove matched with the annular boss of the motor end cover is formed in the cap, and the cap and the annular boss of the motor end cover form a labyrinth oil blocking structure.
Furthermore, a shell mounting head is arranged on the reduction box body or a metal dustproof pipe with the shell mounting head is arranged on the reduction box body, and a pipe wall connecting hole is formed in the other end of the metal pipe or the metal pipe is fixedly connected with the metal pipe mounting head.
Furthermore, the reduction box body is fixedly connected with a shell mounting head, the other end of the metal tube is fixedly connected with a metal tube mounting head, the metal tube mounting head and the shell mounting head are respectively positioned on two sides of the reduction box body, and the transmission device is a three-level gear transmission mechanism or a one-level worm and gear transmission mechanism.
Furthermore, in the plastic nut, the helix angle psi of the internal thread of the segmented plastic nut at any section is less than or equal to 2.90 degrees, and the screw rod is provided with an external thread matched with the helix angle psi of the internal thread of the segmented plastic nut.
In order to solve the above problems, a first technical means for achieving the second object of the present invention is a method for processing a segment type push rod device, the improvement comprising: the processing steps of fixedly connecting at least two sections or more than two sections of the sectional type plastic nut structure of the sectional type push rod device adopting the plastic nut with one end thread of the metal pipe at the same time are as follows:
the method comprises the following steps: taking blanks of processed external threads and unprocessed internal threads of each segmented plastic nut of the plastic nut, and smearing bonding glue on the external threads of each blank and the internal threads of the metal pipe, wherein the bonding glue adopts thread fastening glue, and the length range of each segment of the segmented plastic nut is between 20 and 30 mm;
step two: rotatably installing the first section of segmented plastic nut into the metal pipe, and enabling the first section of segmented plastic nut to reach the deepest screwing position set by the metal pipe;
step three: after the second section of segmented plastic nut is rotated in the metal pipe until the second section of segmented plastic nut touches the first section of plastic nut, the second section of segmented plastic nut is rotated reversely, the rotation degree range is 10-180 degrees, and a separation gap is generated between the second section of segmented plastic nut and the first section of segmented plastic nut;
step four: repeating the steps until the n-1 section of the segmented plastic nut D is finished n-1 Installing;
step five: and rotating the nth section of segmented plastic nut in the metal pipe until the nth section of segmented plastic nut touches the (n-1) th section of segmented plastic nut, and then reversely rotating the nth section of plastic nut by a rotation degree range of 10-180 degrees, so that a separation gap is generated between the nth section of segmented plastic nut and the (n-1) th section of segmented plastic nut.
Step six: and after the bonding glue is solidified, uniformly processing internal threads on blank sections of all the segmented plastic nuts of the plastic nuts to form segmented plastic nuts which are fixedly connected with one end thread of the metal pipe simultaneously, and finishing the processing work of fixedly connecting the segmented plastic nuts with one end thread of the metal pipe.
In order to solve the above problems, a second aspect of the present invention is a method for processing a segment-type pusher device, the improvement comprising: at least two or more than two sections of sectional plastic nuts D of the sectional type plastic nut structure in the sectional type push rod device adopting the plastic nuts 1 、D 2 、…D n Meanwhile, the processing steps of fixedly connecting the metal tube with one end clamp spring are as follows:
firstly, processing n +1 clamp spring grooves 802 with the interval distance of 7-52 mm on the inner wall of one end of the metal pipe 800;
step two: processing n sections of 5-50 mm length of segmented plastic nut D 1 、D 2 、D 3 D, the diameter of the excircle of the blank section is equal to the inner diameter of the metal pipe 800, and the spacing distance between the clamp spring grooves 802 is larger than that of each segmented plastic nut D 1 、D 2 、D 3 D and the difference is the separation gap (delta) 1 、δ 2 、…δ n ) Each of said separation gaps delta 1 、δ 2 、…δ n Are all larger than 0.05 mm;
step three: clamping spring handle first clamping spring K 1 After being arranged in a first jump ring groove 802 which is the deepest in the metal pipe 800, a first section of sectional plastic nut D with the excircle of the first section coated with bonding glue 1 The blank segments are loaded into a metal tube 800, which has also been coated with an adhesive cement, and the first segment is made into a segmented plastic nut D 1 One end of the blank section touches the first clamp spring K 1 Then, the second clamp spring K is clamped by the clamp spring clamp 2 A second clamp spring groove 802 arranged in the metal pipe 800, and a first section of sectional plastic nut D 1 The other end of the blank section and a second clamp spring K 2 Form a separation gap delta 1 ；
Step four: second section sectional plastic nut D with one section of excircle coated with adhesive cement 2 The blank segment is loaded into the metal tube 800 which has been coated with the adhesive and the second segment is made into a segmented plastic nut D 2 One end of the blank section touches the second clamp spring K 2 Then, the third clamp spring K is clamped by the clamp spring clamp 3 A third snap spring groove 802 installed in the metal pipe 800, and a second sectional plastic nut D 2 The other end of the blank section is connected with a third clamp spring K 3 Form a separation gap delta 2 ；
Step five: repeating the steps until a section of the nth section of the segmented plastic nut D with the excircle coated with the adhesive glue n The billet is loaded into the metal tube 800 which has been coated with the adhesive, and the nth segment is made into a segmented plastic nut D n One end of the blank section touches the nth snap spring K n Then, howeverThen the (n + 1) th snap spring K is clamped by the snap spring clamp n+1 An n +1 th jump ring groove 802 arranged in the metal pipe, at the moment, an n-th section of sectional plastic nut D n The other end of the blank section is connected with the n +1 th snap spring K n+1 Form a separation gap delta n ；
Step six: after the bonding glue is solidified, the excircle of the metal tube 800 is clamped, and the segmented plastic nuts D are processed uniformly 1 、D 2 、…D n At least two or more segments of the segmented plastic nut structure 1 、D 2 、…D n And meanwhile, the metal pipe is fixedly connected with a clamp spring at one end of the metal pipe 800 and is processed.
The invention has the beneficial effects that: the sectional type push rod device adopting the plastic nut has good self-lubricating performance and does not need frequent oiling due to the adoption of the plastic nut, so that the sectional type push rod device can smoothly move with the screw rod in the process of screw transmission without adding lubricating grease again in the whole life cycle. Meanwhile, because the scheme that two or more than two segmented plastic nuts and enough expansion gaps are reserved between the segmented plastic nuts is adopted, the total length of the plastic nuts is lengthened, the capability of bearing larger static load and dynamic load is improved, and the length of each segmented plastic nut is shortened due to the total length of the plastic nuts, the deformation of the segmented single segmented nut is reduced under the severe temperature environment with larger temperature difference after the length of the segmented single segmented nut is shortened, the length deformation of each segment of plastic nut is greatly reduced, the length deformation of each segment of plastic nut is reduced, and the deformation is smaller than the gap between the segmented plastic nut and the tooth form matched with the screw rod, so that the problem of axial expansion death cannot occur between the plastic nut and the screw rod even if the plastic nut is used under the severe temperature environment of-30-70 ℃, the solar energy sun-tracking support is particularly suitable for the push rod device of the solar energy power generation sun-tracking support under the conditions of severe temperature environment with large temperature difference and large load bearing.
The sectional type push rod device adopting the plastic nut has good performanceThe self-lubricating performance does not need frequent oiling, and the axial expansion can not be caused under the conditions of severe temperature environment with large temperature difference and large load bearing. The push rod device is particularly suitable for the lifting and/or angle adjusting function of the push rod device of the solar power generation sun-tracking support under the conditions of severe temperature environment with large temperature difference and large load bearing, is particularly suitable for the push rod device of the solar power generation sun-tracking support, and is also suitable for special environments and occasions, such as scientific experiments, polar investigation, deep sea detection, desert or cold and hot zone environments and the like. The second method for processing the sectional push rod device by adopting the plastic nut further has the advantages of simple and convenient assembly process, high production efficiency, simple processing and sectional plastic nut D 1 、D 2 、…D n External threads are not needed, internal threads are not needed to be turned on the metal pipe 800, and turning of a plurality of deep grooves in the metal pipe 800 is simpler than turning of the internal threads and labor-saving.
Drawings
FIG. 1 is a schematic view showing the overall construction of a first embodiment of a segmented push rod device of the present invention employing a plastic nut;
FIG. 2 is a schematic view, partly in section, of a first embodiment of a segmented tappet device of the present invention, with a plastic nut;
FIG. 3 is a schematic view in partial cross-section of a first embodiment of an oil blocking structure of the segmented tappet device employing a plastic nut according to the present invention;
FIG. 4 is an enlarged partial cross-sectional view of the oil blocking structure of the first embodiment of the segmented tappet device employing the plastic nut according to the present invention;
FIG. 5 is a schematic view of a first oil blocking structure of the first embodiment of the segmented tappet device of the present invention, which employs a plastic nut;
FIG. 6 is a schematic view of a second oil blocking structure of the first embodiment of the segmented tappet device of the present invention, employing a plastic nut;
FIG. 7 is a schematic view showing the installation of an input shaft and a lower housing of an oil blocking structure of a first embodiment of the segmental tappet device using a plastic nut according to the present invention;
FIG. 8 is a schematic view showing the overall structure of a second embodiment of the segmented tappet device of the present invention, which employs a plastic nut;
FIG. 9 is a schematic view showing the overall construction of a third embodiment of a segmented tappet device of the present invention, which employs a plastic nut;
FIG. 10 is a schematic sectional pusher apparatus of the present invention, taken along the line A-A, illustrating a third embodiment of the plastic nut;
FIG. 11 is a schematic view showing the overall construction of a fourth embodiment of a segmented tappet device of the present invention, which employs a plastic nut;
FIG. 12 is a schematic view of a fourth embodiment of the segmented tappet device of the present invention, taken along the direction B-B, and including a plastic nut;
FIG. 13 is an enlarged, partially broken away, first pictorial illustration of a segmented tappet device incorporating a plastic nut according to the present invention;
FIG. 14 is a schematic view of a nut structure of the segmented tappet device of the present invention, which employs a plastic nut;
FIG. 15 is an enlarged, partially broken away, second sectional pusher assembly of the present invention employing a plastic nut;
FIG. 16 is an enlarged, partially broken away, third schematic view of a segmented tappet device of the present invention, employing a plastic nut;
FIG. 17 is an enlarged, partially broken away, fourth illustration of the segmented tappet device of the present invention, employing a plastic nut;
FIG. 18 is a schematic structural view of the plastic nut helix angle of the segmented tappet device of the present invention, employing a plastic nut;
fig. 19 is a schematic structural view of the sectional type push rod device adopting the plastic nut, wherein the plastic nut is fixedly connected with the metal pipe by the snap spring.
In the figure:
a driving motor 100, a motor end cover 110, an annular boss 111, an input shaft 120, an exposed end 121,
an upper case 200, a lower case 300, a transmission 400, a screw rod 500, a plastic nut 600,
first section plastic nut D 1 Second section of plastic nut D 2 Third section plastic nut D 3 ，
Fourth section plastic nut D 4 Switch contact ring 700, metal tube 800, pin 801, clamp spring groove 802, clamp spring K, and first clamp spring K 1 And a second clamp spring K 2 And a third clamp spring K 3 A housing mounting head 901 and a metal pipe mounting head 902.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
Example 1
As shown in fig. 1, 2, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, the sectional push rod device using plastic nut according to the present invention includes an input shaft 120, an upper housing 200, a lower housing 300, a transmission 400, a lead screw 500, a plastic nut 600 and a metal pipe 800, wherein the upper housing 200 and the lower housing 300 are fixedly connected to form a reduction box and form a space for accommodating the transmission 400, the transmission 400 is a gear transmission or a worm gear transmission, the input shaft 120 has an exposed end 121 located outside the reduction box and an extended end located inside the reduction box, the input shaft 120 and the exposed end 121 may be an integrated structure or a separately installed integrated structure, the extended end of the input shaft 120 is a toothed shaft or a worm, and the toothed shaft or the extended end of the input shaft 120 is respectively connected with a first-stage gear or a worm of the transmission 400 The worm gear is engaged, the input shaft 120 extends into a space formed by enveloping the upper housing 200 and the lower housing 300, the tail end of the input shaft 120 is a straight-tooth shaft and is engaged with the first-stage straight-tooth gear of the transmission device 400; or the end of the input shaft 120 is a helical gear shaft and is engaged with the first stage helical gear of the transmission 400; or the end of the input shaft 120 is a worm and is engaged with the first stage worm wheel of the transmission 400. The final gear or worm wheel of the transmission device 400 is fixedly connected with or integrated with the screw rod 500 to drive the screw rod 500 to rotate, the plastic nut 600 is spirally installed on the screw rod 500, one end of the metal tube 800 is fixedly connected with the periphery of the plastic nut 600, and the screw rod 500 drives the plastic nut 600 to make reciprocating linear motion on the screw rod 500 when rotating. The metal pipe 800 and the plastic nut 600 are fixedly connected by a thread. The improvement is that:
the plastic nut 600 is a sectional plastic nut structure, and the sectional plastic nut structure is composed of two or more sections of the sectional plastic nut D 1 、D 2 、…D n N is more than or equal to 2 and is a positive integer, and the adjacent segmented plastic nuts D 1 、D 2 、…D n At least two or more segments of the segmented plastic nut structure with a separation gap therebetween 1 、D 2 、…D n All of which are fixedly connected with one end of the metal tube 800 by screw threads or fixedly connected with a clamp spring.
Here according to the segmented plastic nut D 1 、D 2 、…D n The position of the segment of the plastic nut, which is installed at one end of the metal pipe 800 and is located at the deepest position inside the metal pipe 800, is defined as D 1 And segmenting the plastic nut D by a first segment 1 Sequentially defining the sectional plastic nuts to be positioned at the second section to the nth section inside the metal pipe 800 as a reference D 2 Up to D n . In the segmented plastic nut D 1 、D 2 、…D n And the metal tube 800 can also enhance the fixed connection reliability of the two by increasing the way of coating adhesive glue.
As shown in fig. 1, 2, 8, 9, 11, 13, 15, 16, 17 and 19, in the sectional push rod device using the plastic nut according to the present invention, at least two or more sectional plastic nuts D of the sectional plastic nut structure are provided 1 、D 2 、…D n At the same time, the nut is fixedly connected with one end of the metal tube 800 through threads, or fixedly connected with a clamp spring, or at least two sections or more than two sections of sectional plastic nuts of the sectional plastic nut structureMother D 1 、D 2 、…D n At the same time, with a pin and/or a screw at one end of the metal pipe 800, or at least two or more segmented plastic nuts D of the segmented plastic nut structure 1 、D 2 、…D n A part of the segmented plastic nuts are fixedly connected with one end of the metal pipe 800 by pins and/or screws, and the other segmented plastic nuts are fixedly connected with one end of the metal pipe 800 by threads.
As shown in FIG. 19, in the sectional push rod device using the plastic nut according to the present invention, at least two or more sectional plastic nuts D of the sectional plastic nut structure 1 、D 2 、…D n At the same time, is fixedly connected with a clamp spring at one end of the metal pipe 800, and each segmented plastic nut D 1 、D 2 、…D n The two ends of the metal pipe 800 are respectively provided with a clamp spring K, the clamp springs K are clamped in clamp spring grooves 802 arranged on the inner wall of the metal pipe 800, and the first section of the segmented plastic nut D 1 One end of and the first clamp spring K 1 Against the other end of the spring and a second clamp spring K 2 A separation gap delta is arranged between 1 Second segment of segmented plastic nut D 2 One end of and the second clamp spring K 2 Against the other end of the third clamp spring K 3 A separation gap delta is arranged between 2 N-th section of sectional plastic nut D n One end of the first clamping spring K and the n-th clamping spring K n Against the other end of the spring, and the other end of the spring is connected with the n +1 th snap spring K n+1 A separation gap delta is arranged between n (ii) a The segmented plastic nut D after the plastic nut 600 is segmented 1 、D 2 、…D n Each segment length range L 1 、L 2 、…L n Are all between 5 and 50mm, and the spacing distance between the clamp spring grooves 802 is greater than that of each segmented plastic nut D 1 、D 2 、…D n Length of said segmented plastic nut D 1 、D 2 、…D n And a separation gap delta between the clamp spring K and the clamp spring 1 、δ 2 、…δ n Are all larger than 0.05 mm.
As shown in fig. 1, 2, 8, 9, 11, 13, 15 and 16, the present invention is a component using a plastic nutIn the segment type push rod device, the plastic nut 600 is a segment type plastic nut D with 4 segments 1 、D 2 、D 3 、D 4 And 4 sections of said segmented plastic nut D 1 、D 2 、D 3 、D 4 And is fixedly connected with one end of the metal pipe 800 through threads. In the segmented plastic nut D 1 、D 2 、…D 4 And the metal tube 800 can also enhance the fixed connection reliability of the two by increasing the way of coating adhesive glue. Of course, there may also be 4 segments of segmented plastic nut D 1 、D 2 、D 3 、D 4 Is fixedly connected with the metal pipe 800 by adopting pins (see figure 16), and a plastic nut D is arranged at the section 1 、D 2 、…D 4 And the metal pipe 800 can also enhance the fixing connection reliability of the two by increasing the way of coating adhesive glue.
As shown in fig. 1, 2, 8, 9, 11, 13, 14, 15, 16 and 17, in the sectional push rod device using the plastic nut according to the present invention, the sectional plastic nut D is segmented by the plastic nut 600 1 、D 2 、…D n Each segment length range L 1 、L 2 、…L n The length of each section of the segmented plastic nut is 20-30 mm, and under the condition that the static load and the dynamic load which can be borne by each section of the segmented plastic nut can meet the design requirements, the optimal length of each section reaches the maximum static load and dynamic load which can be borne by 25 +/-2 mm. In order to prevent the segmented plastic nuts from generating axial expansion death at high temperature or low temperature, which causes failure of the lifting and/or angle adjusting function of the segmented push rod device adopting the plastic nuts on the solar power generation sun-tracking support push rod device, the adjacent segmented plastic nuts D 1 、D 2 、…D n With a separation gap C therebetween 1 、C 2 、…C n Are all larger than 0.05 mm.
As shown in fig. 13, 15, 16 and 17, in the sectional push rod device using the plastic nut according to the present invention, all the sectional plastic nuts D are provided when the plastic nut 600 receives a dynamic load of 1 ton 1 、D 2 、…D n The total length E2 is 50-150 mm, and all the segmented plastic nuts in the total length size range can bear 1 ton of integral dynamic load and 3 tons or more of static load; all segmented plastic nuts D when the plastic nut 600 bears 2 tons of dynamic load 1 、D 2 、…D n The total length E2 of the nut is between 100 and 200mm, and all the segmented plastic nuts in the total length size range can bear 2 tons of overall dynamic load and 5 to 10 tons of static load.
As shown in fig. 1, fig. 2, fig. 8, fig. 9, fig. 11, fig. 13, fig. 14, fig. 15, fig. 16, and fig. 17, in the sectional push rod device using the plastic nut according to the present invention, the major diameter Φ 2 of the external thread of the screw rod 500 is 15 to 35mm, and the major diameter Φ 4 of the internal thread of the plastic nut 600 matching therewith is 30 to 50 mm. The matching selection of the screw rod 500 and the plastic nut 600 can ensure that the segmented plastic nut 600 still has good comprehensive mechanical properties under severe temperature environments with large temperature difference, so that the segmented plastic nut has the capability of bearing large static load and dynamic load.
As shown in fig. 1, 2, 3, 8, 9, 11, 13, 15, 16, and 17, in the sectional push rod device using a plastic nut according to the present invention, a switch contact ring 700 is screwed and fixed to a portion of the plastic nut 600 exposed at one end of the metal tube 800, and in order to prevent the nut 600 and the switch contact ring 700 from being separated, anaerobic glue or thread fastening glue is applied to a screwed portion of the two to fix the two; or the nut 600 may be screwed into the metal tube 800, anaerobic glue or thread fastening glue is applied to a screwed position of the two for connection and fixation, and the switch contact ring 700 is screwed and fixed to one end of the metal tube 800. The switch touch ring 700 is provided with a switch for starting the driving motor 100 in the electric push rod device, when the electric push rod device is required to realize lifting and/or angle adjustment of an external mechanism, a moving part for starting the electric push rod device on the external mechanism touches a switch device on the switch touch ring 700, so that the driving motor 100 is electrified and rotated to be started, the input shaft 120 drives the transmission device 400 to rotate, so that the screw rod 500 rotates, and then the nut 600 fixedly connected with the metal pipe 800 in a threaded screwing mode is driven to realize reciprocating linear motion, so that the whole electric push rod device has the function of lifting and/or angle adjustment of the external mechanism.
As shown in fig. 1, 2, 3, 4, 5, 6, and 7, the sectional push rod device using plastic nut of the present invention further includes a driving motor 100, the driving motor 100 is fixedly connected to the lower housing 300, a driving shaft of the driving motor 100 is an input shaft 120 of the reduction box, an outer end surface of a motor end cover 110 of the driving motor 100 is provided with an integrally formed annular boss 111, the input shaft 120 of the driving motor 100 is provided with a cap 130, a central hole of the cap 130 is matched with a cross-sectional shape of a corresponding fitting portion of the input shaft 120, a central hole of the cap 130 is in a tooth shape or a circular shape, the central hole is matched with the tooth shape or the circular shape of the cross-sectional shape of the corresponding fitting portion of the input shaft 120, the cap 130 is in an interference fit with the input shaft 120, the cap 130 is provided with a groove matched with the annular boss 111 of the motor end cover 110, the groove of the cap 130 and the annular boss 111 of the motor end cover 110 have a gap to form a spatial separation, the separation gap can be 0.2-0.5 mm, and the cap 130 and the annular boss 111 of the motor end cover 110 form a labyrinth oil-blocking structure. The separation gap of 0.2-0.5 mm can prevent the cap 130, which is integrally assembled with the input shaft 120 of the driving motor 100 in an interference fit manner, from rubbing against the annular boss 111 under the driving of the rotation of the input shaft 120, and thus, the driving motor 100 cannot be blocked. Meanwhile, the cap 130 and the annular boss 111 form an oil blocking structure capable of preventing lubricating grease from flowing into the driving motor from the reduction gearbox, so that the problem that the lubricating grease permeates into the driving motor along the driving shaft of the driving motor is well solved.
As shown in fig. 1, 2, 3, 4, 5, 6, and 7, in the segmented tappet device using a plastic nut according to the present invention, the cap 130 is in an interference fit with the input shaft 120, the cap 130 has an umbrella-shaped structure, and the cap 130 covers or partially covers the annular boss 111 of the motor end cap 110 with a certain gap. When the gear shaft or the worm at the end of the input shaft 120 of the driving motor 100 is engaged with the first-stage straight gear shaft, the helical gear shaft or the worm gear of the transmission 400, respectively, since the cap 130 covers or partially covers the outside of the annular boss 111 of the motor end cover 110, the lubricating grease for realizing the lubricating function between the transmission 400 and the input shaft 120 is blocked outside the cap 130 and flows into the annular cavity space formed by connecting the motor end cover 110 and the lower housing 300 along the outer surface of the cap 130 in the umbrella structure, while the annular boss 111 inside the cap 130 forms a stepped labyrinth structure with the cap 130, even when the height of the lubricating grease in the annular cavity space formed by connecting the motor end cover 110 and the lower housing 300 exceeds the height of the cap 130, because the labyrinth of notch cuttype and cap 130 with the existence of annular boss 111 to the centrifugal force effect of adhering to grease still makes lubricating grease can't flow in input shaft 120's annular boss 111 top department makes cap 130 with what annular boss 111 formed can prevent lubricating grease from the reduction box in to the inside flowing structure that hinders of driving motor, fine solution among the prior art lubricating grease along driving motor's drive shaft infiltration to the inside problem of driving motor.
As shown in fig. 1, 2, 3, 4, 5, 6 and 7, in the sectional push rod device using a plastic nut according to the present invention, the outer circumference of the cap 130 has a circular or polygonal structure, and the central hole of the cap 130 has an inner gear ring shape or a circular shape. The annular boss 111 which forms a labyrinth oil-blocking structure in cooperation with the cap 130 is also in a circular or polygonal structure. The shape of the central hole of the cap 130 is matched with the cross section of the corresponding matching part of the input shaft 120, and meanwhile, the cap 130 can be suitable for matching with the input shafts 120 with different shapes and the motor end cover 110 with different types of annular bosses 111 by combining the various properties of the shape of the central hole of the cap 130, so that the universality is wider, the structure can be selected according to different motor end covers 110, and the matching of the cap 130 and the annular bosses 111 of the motor end cover 110 is facilitated.
As shown in fig. 1, 2, 3, 4, 5, 6, and 7, in the sectional push rod device using the plastic nut according to the present invention, the cap 130 is made of engineering plastic or metal, and the motor end cover 110 is made of metal. When the cap 130 and the motor end cover 110 are matched with each other, the following two material combination modes are adopted: 1. the cap 130 and the motor end cover 110 are made of metal; 2. the motor end cover 110 is made of metal, and the cap 130 is made of engineering plastics. Adopt the combination of xenogenesis material can reach best antifriction effect, when driving motor 100 drives to be located on the input shaft 120 the block 130 is rotatory, even if the block 130 with the annular boss 111 of motor end cover 110 produces the friction, also can not excessive wearing and tearing the block 130 causes the block 130 damages.
As shown in fig. 1, fig. 2, fig. 3, fig. 8, fig. 9, and fig. 11, in the sectional push rod device using plastic nuts according to the present invention, a casing mounting head 901 or a metal dust-proof pipe with the casing mounting head 901 is disposed on the speed reduction casing, and a pipe wall connecting hole is opened at the other end of the metal pipe 800 or fixedly connected to the metal pipe mounting head 902, which is specifically represented as: the casing mounting head 901 is mounted on the upper casing 200 of the reduction box body or the casing mounting head 901 is mounted on the lower casing 300 of the reduction box body; or the upper casing 200 of the reduction box body is made into a whole with the casing mounting head 901 or the lower casing 300 of the reduction box body is made into a whole with the casing mounting head 901; or the casing mounting head 901 is located on a metal dustproof pipe integrally mounted with the reduction box body, or on a component mounted and connected with the reduction box body. The housing mounting head 901 may be used to connect to the fixed end of an external mechanism and the metal pipe mounting head 902 may be used to connect to the moving end of an external mechanism, or vice versa.
As shown in fig. 1, 2, 3, 8, 9, and 11, in the segmental push rod device using plastic nuts according to the present invention, the reduction box body is fixedly connected to a casing mounting head 901, the other end of the metal pipe 800 is fixedly connected to a metal pipe mounting head 902, and the metal pipe mounting head 902 and the casing mounting head 901 are respectively located at two sides of the reduction box body. Of course, the reduction box may be replaced by a metal dust-proof pipe with the housing mounting head 901 provided thereon, and the other end of the metal pipe 800 may be provided with a pipe wall connecting hole, so as to be suitable for a compact location.
As shown in fig. 1, 2, 3, 8, 9 and 11, in the sectional push rod device using plastic nut according to the present invention, the transmission 400 is a three-stage gear transmission or a one-stage worm and gear transmission. The transmission device 400 is a gear transmission mechanism with no less than two stages or a worm gear transmission mechanism with one or more stages. Such a transmission 400 can achieve a simplified structure while satisfying the transmission function, wherein a three-stage gear transmission mechanism or a one-stage worm and worm gear transmission mechanism is preferably adopted; according to the difference between the output torque of the driving motor 100 and the rotation speed of the input shaft 120, in order to achieve the best function of driving the screw rod 500 to drive the nut 600 to ascend and descend to realize the electric push rod device, a two-stage or four-stage gear transmission mechanism or a two-stage worm and gear transmission mechanism can be selected.
As shown in fig. 8, 9, 10, 11 and 12, in the sectional push rod device using the plastic nut according to the present invention, the exposed end 121 of the input shaft 120 is connected to an external manual control or electric control mechanism to input power to the push rod device, and the exposed end 121 of the input shaft 120 has a square, hexagonal, flat or splined structure.
As shown in fig. 14, in the sectional push rod device using the plastic nut according to the present invention, in the plastic nut 600, the sectional plastic nut D of any section is provided 1 、D 2 、…D n Has a lead angle psi ≦ 2.90 DEG with the segmented plastic nut D 1 、D 2 、…D n The lead angle psi of the internal thread of (a) is matched with that of the external thread. Due to the sectional plastic nut D 1 、D 2 、…D n And the smaller lead angle of the internal thread of the screw rod and the external thread of the screw rod, in the segmented plastic nut D 1 、D 2 、…D n Is matched with a screw rodAfter the screw drive ram device has reached a set lifting height and/or angular position, the plastic nut D is then segmented 1 、D 2 、…D n The self-locking screw rod still has high self-locking capability when a push rod device particularly used for a solar power generation sun-tracking bracket works under a severe temperature environment with a large temperature difference of-30-70 ℃, namely, when the axial load force continues to exist due to the loss of the driving force, the screw rod cannot be arranged in the segmented plastic nut D 1 、D 2 、…D n In which relative rotation is produced and a plastic nut D is segmented 1 、D 2 、…D n The lead screw can be well self-locked, so that the whole push rod device can be well kept at a set lifting height and/or angle position, and equipment and safety accidents cannot be caused.
As shown in fig. 1, 2, 8, 9, 11, 13 and 15, a first method for machining a segment-type push rod device according to the present invention is improved by: at least two or more segments of the segmented plastic nut structure in the segmented push rod device adopting the plastic nut 1 、D 2 、…D n Meanwhile, the processing steps of the thread fixed connection with one end of the metal pipe 800 are as follows:
the method comprises the following steps: taking each sectional plastic nut D of the plastic nut 600 1 、D 2 、D 3 、D 4 The blanks with processed external threads and unprocessed internal threads are coated with bonding glue on the external threads of the blanks and the internal threads of the metal pipe 800, the bonding glue is screw fastening glue, and the segmented plastic nut D 1 、D 2 、D 3 、D 4 Each segment length range L 1 、L 2 、L 3 、L 4 All are between 20 and 30mm, and all the segmented plastic nuts D of the plastic nut 600 1 、D 2 、、D 3 、D 4 The total length E2 is between 50 and 200 mm;
step two: segmenting the first section into plastic nuts D 1 Rotatably mounted into the metal tube 800 with the first segmented plastic nut D 1 Can reach toThe deepest screwing position set by the metal pipe 800;
step three: segmenting the second section into plastic nuts D 2 Rotating in the metal tube until touching the first segmented plastic nut D 1 Then, reversely rotating the second section of the sectional plastic nut D 2 And the rotation degree range is 10-180 degrees, so that the second section of segmented plastic nut D 2 With said first segment of segmented plastic nut D 1 Between them, a separation gap C is generated 1 ；
Step four: segmenting the third section into plastic nuts D 3 Rotating in the metal tube 800 to touch the second segmented plastic nut D 2 Then, reversely rotating the third section of segmented plastic nut D 3 And the rotation degree range is 10-180 degrees, so that the third section of segmented plastic nut D 3 With said second section of segmented plastic nut D 2 Between which a separation gap C is generated 2 ；
Step five: the fourth section is segmented into plastic nuts D 4 Rotating in the metal tube 800 until touching the third segmented plastic nut D 3 Then, reversely rotating the fourth section of segmented plastic nut D 4 The rotation degree range is 10-180 degrees, so that the fourth section of the segmented plastic nut D is arranged 4 And the third section of the segmented plastic nut D 3 Between them, a separation gap C is generated 3 ；
Step six: after the bonding glue is solidified, all the segmented plastic nuts D of the plastic nut 600 are subjected to 1 、D 2 、D 3 、D 4 The blank sections of (a) are uniformly processed with internal threads to form a segmented plastic nut D fixedly connected with one end of the metal pipe 800 at the same time 1 、D 2 、D 3 、D 4 Said segmented plastic nut D 1 、D 2 、D 3 、D 4 And finishing the processing work of fixedly connecting with one end of the metal pipe 800 through threads.
Example 2
As shown in FIG. 16, the present invention also provides another segmented tappet device using plastic nut and its implementationExample 1 differs therefrom in that the segmented plastic nut D 1 、D 2 、…D n The structure form connected with the metal pipe 800 is a connecting structure fixedly connected by adopting a pin 801 and/or a screw, and each segmented plastic nut D 1 、D 2 、…D n The position where the metal pipe 800 is installed is defined as a first sectional plastic nut D located at the deepest part inside the metal pipe 800 1 And a plastic nut D is segmented by a first section 1 Sequentially defining rear segmented plastic nuts positioned inside the metal pipe 800 as reference D 2 Up to D n . Segmented plastic nut D as described in this embodiment 1 、D 2 、…D n Using more than two segmented constructions, i.e. 4 segments of segmented plastic nuts D 1 、D 2 、…D 4 Each section is fixedly connected with the metal pipe 800 by adopting a pin 801 or a screw, and each section is provided with a plastic nut D 1 、D 2 、…D 4 And the metal pipe 800 can also enhance the reliability of the fixed connection between the metal pipe and the metal pipe by increasing the way of smearing the bonding glue. Of course, in this embodiment, a connection structure using a pin fixing connection or a screw fixing connection may be replaced by a connection structure using a combination of the pin fixing connection and the screw fixing connection.
Example 3
As shown in FIG. 17, the present invention also provides another sectional type putter device using a plastic nut, which is different from the embodiments 1 and 2 in that the sectional type plastic nut D 1 、D 2 、…D n The structure form of the fixed connection with the metal pipe 800 is a connection structure which adopts the fixed connection of the pin 801 and the fixed connection of the screw thread, namely, the mixed use. The segmented plastic nut D 1 、D 2 、…D n The position where the metal pipe 800 is installed is defined as a first sectional plastic nut D located at the deepest part inside the metal pipe 800 1 And a plastic nut D is segmented by a first section 1 Sequentially defining the rear segmented plastic nuts positioned inside the metal pipe 800 as D for reference 2 Up to D n . Segmented plastic nut D as described in this example 1 、D 2 、…D n With two-part construction, i.e. with plastic nut D segmented only by the first part 1 And a second segmented plastic nut D 2 In combination, wherein the first section is a segmented plastic nut D 1 Fixedly connected with the metal pipe 800 in a threaded connection mode, and the second section of sectional plastic nut D 2 The metal pipe 800 is fixedly connected by using a pin 801. The first section of the segmented plastic nut D 1 And the metal pipe 800 can also enhance the fixing connection reliability of the two by increasing the way of coating adhesive glue. Of course, the first segment of the segmented plastic nut D can be used in the present embodiment 1 Adopt pin fixed connection and second section segmentation plastic nut D 2 The connecting structure which is fixedly connected by threads and is used in a mixed mode at the same time can be replaced by the connecting structure which is fixedly connected by screws and fixedly connected by threads and used in a mixed mode at the same time.
Example 4
As shown in fig. 19, the second method for processing a segment-type push rod device according to the present invention is improved by: at least two or more segments of the segmented plastic nut structure in the segmented push rod device adopting the plastic nut 1 、D 2 、D 3 、D 4 Meanwhile, the processing steps of fixedly connecting the clamping spring at one end of the metal pipe 800 are as follows:
firstly, processing 5 clamp spring grooves 802 with the interval distance of 7-52 mm on the inner wall of one end of the metal pipe 800;
step two: processing 4 sections of segmented plastic nuts D with the length of 5-50 mm 1 、D 2 、D 3 、D 4 The excircle diameter of the blank section is equal to the inner diameter of the metal tube 800, and the distance between the clamp spring grooves 802 is larger than that of each segmented plastic nut D 1 、D 2 、D 3 、D 4 The length of the blank segment and the difference between the two being the separation gap delta 1 、δ 2 、δ 3 、δ 4 Each of said separation gaps delta 1 、δ 2 、δ 3 、δ 4 Are all larger than 0.05 mm;
step three: clamping spring handle first clamping spring K 1 After being arranged in a first jump ring groove 802 which is the deepest in the metal pipe 800, a first section of sectional plastic nut D with the excircle of the first section coated with bonding glue 1 Is inserted into a metal tube 800, which has also been coated with adhesive glue, and the first section is made up of a segmented plastic nut D 1 One end of the blank section touches the first clamp spring K 1 Then, the second clamp spring K is clamped by the clamp spring clamp 2 A second clamp spring groove 802 arranged in the metal pipe 800, and a first section of sectional plastic nut D 1 The other end of the blank section and a second clamp spring K 2 Form a separation gap delta 1 ；
Step four: second section sectional plastic nut D with one section of excircle coated with bonding glue 2 Is installed in a metal tube 800 which has been coated with a bonding glue, and a second section is made into a segmented plastic nut D 2 One end of the blank section touches the second clamp spring K 2 Then, the clamp spring clamp is used for clamping a third clamp spring K 3 A third snap spring groove 802 arranged in the metal pipe 800, and a second section of sectional plastic nut D 2 The other end of the blank section and a third clamp spring K 2 Form a separation gap delta 2 ；
Step five: repeating the steps until a section of 4 th section of plastic nut D with the outer circle coated with the bonding glue 4 The blank segment of (4) is loaded into the metal tube 800 which has been coated with the adhesive, and the segmented plastic nut D of (4) th segment is made 4 One end of the blank section touches the 4 th snap spring K 4 Then, the 5 th snap spring K is clamped by the snap spring clamp 5 The 5 th clamp spring groove 802 is arranged in the metal pipe 800, and the 5 th section of the plastic nut D is arranged at the moment n The other end of the blank section and the 5 th snap spring K 5 Form a separation gap delta 5 ；
Step six: after the bonding glue is solidified, the excircle of the metal tube 800 is clamped, and the segmented plastic nuts D are processed uniformly 1 、D 2 、D 3 、D 4 At least two or more segments of the segmented plastic nut structure 1 、D 2 、D 3 、D 4 And meanwhile, the metal pipe is fixedly connected with a clamp spring at one end of the metal pipe 800, and the processing is finished.
The second method for processing the sectional push rod device by adopting the plastic nut is that the sectional plastic nut D 1 、D 2 、…D n And the metal pipe 800 is fixedly connected with the clamp spring by adopting a processing method of a connecting structure.
Claims (11)
1. A sectional type push rod device adopting a plastic nut comprises an input shaft (120), an upper shell (200), a lower shell (300), a transmission device (400), a screw rod (500), a plastic nut (600) and a metal pipe (800), wherein the upper shell (200) and the lower shell (300) are fixedly connected to form a reduction box body and form a space for accommodating the transmission device (400), the transmission device (400) is a gear transmission mechanism or a worm gear transmission mechanism, the input shaft (120) is provided with an exposed end (121) positioned outside the reduction box body and an extending end positioned inside the reduction box body, the extending end of the input shaft (120) is a tooth shaft or a worm, the tooth shaft or a last-stage worm at the extending end of the input shaft (120) is respectively meshed with a first-stage gear or a worm wheel of the transmission device (400), and the gear or the worm wheel of the transmission device (400) is fixedly connected with or integrally manufactured with the screw rod (500), the screw rod (500) is driven to rotate, the plastic nut (600) is spirally arranged on the screw rod (500), one end of the metal pipe (800) is fixedly connected with the periphery of the plastic nut (600), and the screw rod (500) drives the plastic nut (600) to do reciprocating linear motion on the screw rod (500) when rotating; the method is characterized in that:
the plastic nut (600) is a sectional plastic nut structure which is composed of at least two or more sections of sectional plastic nuts (D) 1 、D 2 、…D n ) N is more than or equal to 2 and is a positive integer, and the adjacent segmented plastic nuts (D) 1 、D 2 、…D n ) At least two or more segments of the segmented plastic nut structure with a separation gap therebetween (D) 1 、D 2 、…D n ) And is fixedly connected with one end of the metal pipe (800).
2. The segmented push rod apparatus of claim 1 employing a plastic nut, wherein: at least two or more segments of the segmented plastic nut structure (D) 1 、D 2 、…D n ) At the same time, the nut is fixedly connected with one end of the metal pipe (800) through threads, or fixedly connected with a clamp spring, or at least two sections or more than two sections of sectional plastic nuts (D) of the sectional plastic nut structure 1 、D 2 、…D n ) At the same time, the nut is fixedly connected with one end of the metal pipe (800) by a pin and/or a screw, or at least two or more than two sections of the sectional plastic nut structure 1 、D 2 、…D n ) A part of the segmented plastic nuts are fixedly connected with one end of the metal pipe (800) through pins and/or screws, and the other segmented plastic nuts are fixedly connected with one end of the metal pipe (800) through threads.
3. The segmented pusher bar apparatus of claim 1 employing a plastic nut, wherein:
at least two or more segments of the segmented plastic nut structure (D) 1 、D 2 、…D n ) And the sectional plastic nuts (D) are fixedly connected with a clamp spring at one end of the metal pipe (800) at the same time 1 、D 2 、…D n ) The two ends of the metal pipe (800) are respectively provided with a clamp spring (K), the clamp springs (K) are clamped in clamp spring grooves (802) formed in the inner wall of the metal pipe (800), and the first section of the segmented plastic nut (D) is arranged 1 ) One end of (A) and the first clamp spring (K) 1 ) Against the other end of the spring and a second snap spring (K) 2 ) A separation gap delta is arranged between 1 Second segment of segmented plastic nut (D) 2 ) One end of (A) and a second circlip (K) 2 ) Against the other end of the spring, and the other end of the spring is connected with a third snap spring (K) 3 ) A separation gap delta is arranged between 2 N-th section of segmented plastic nut (D) n ) One end of (D) and the nth snap spring (K) n ) Against the other end of the first springn +1 circlip (K) n+1 ) A separation gap delta is arranged between n (ii) a The segmented plastic nut (D) after the plastic nut (600) is segmented 1 、D 2 、…D n ) Each segment length range L 1 、L 2 、…L n All are between 5 and 50mm, and the spacing distance between the clamp spring grooves (802) is greater than that between the segmented plastic nuts (D) 1 、D 2 、…D n ) Length of said segmented plastic nut (D) 1 、D 2 、…D n ) A separation gap (delta) between the clamping spring (K) and the clamping spring 1 、δ 2 、…δ n ) Are all larger than 0.05 mm.
4. The segmented push rod apparatus of claim 1 employing a plastic nut, wherein: the segmented plastic nut (D) after the plastic nut (600) is segmented 1 、D 2 、…D n ) Per segment length range (L) 1 、L 2 、…L n ) All between 5mm and 50mm, adjacent to each other 1 、D 2 、…D n ) With a separation gap (C) therebetween 1 、C 2 、…C n ) Are all larger than 0.05 mm.
5. The segmented pusher bar apparatus of claim 1 employing a plastic nut, wherein: the major diameter phi 2 of the external thread of the screw rod (500) is between 15 and 35mm, and the major diameter phi 4 of the internal thread of the plastic nut (600) matched with the screw rod is between 30 and 50 mm.
6. The segmented pusher bar apparatus of claim 1 employing a plastic nut, wherein: the oil-blocking structure is characterized by further comprising a driving motor (100), the driving motor (100) is fixedly connected with the lower shell (300), a driving shaft of the driving motor (100) is an input shaft (120) of the reduction box body, an integrally formed annular boss (111) is arranged on the outer end face of a motor end cover (110) of the driving motor (100), a cap (130) is arranged on the input shaft (120) of the driving motor (100), the shape of a central hole of the cap (130) is matched with the shape of the cross section of a corresponding matching part of the input shaft (120), a groove matched with the annular boss (111) of the motor end cover (110) is formed in the cap (130), and a labyrinth oil-blocking structure is formed by the cap (130) and the annular boss (111) of the motor end cover (110).
7. The sectional type push rod device adopting the plastic nut is characterized in that a shell mounting head (901) is arranged on the reduction box body or a metal dustproof pipe with the shell mounting head (901) is arranged on the reduction box body, and a pipe wall connecting hole is formed in the other end of the metal pipe (800) or the metal pipe is fixedly connected with the metal pipe mounting head (902).
8. The segmented push rod device using plastic nut as claimed in claim 1, wherein a casing mounting head (901) is fixedly connected to the reduction box, a metal pipe mounting head (902) is fixedly connected to the other end of the metal pipe (800), the metal pipe mounting head (902) and the casing mounting head (901) are respectively located at two sides of the reduction box, and the transmission device (400) is a three-stage gear transmission mechanism or a one-stage worm gear transmission mechanism.
9. The segmented pusher bar apparatus of claim 1 employing a plastic nut, wherein: in the plastic nut (600), the segmented plastic nut (D) of any section 1 、D 2 、…D n ) Has a lead angle psi ≦ 2.90 DEG and the screw spindle (500) has a thread which is in contact with the segmented plastic nut (D) 1 、D 2 、…D n ) The lead angle psi of the internal thread of (a) is matched with that of the external thread.
10. A method of producing a segmented tappet device using plastic nut as claimed in any one of claims 1, 2, 4 to 9, wherein: at least two or more than two sections of the sectional type plastic nut structure in the sectional type push rod device adopting the plastic nut (D) 1 、D 2 、…D n ) Simultaneously with said metal tube (a)800) The processing steps of the fixed connection of one end thread are as follows:
the method comprises the following steps: taking each segmented plastic nut (D) of the plastic nut (600) 1 、D 2 、…D n ) The blank sections with processed external threads and unprocessed internal threads are coated with bonding glue on the external threads of the blank sections and the internal threads of the metal pipe (800), the bonding glue is thread fastening glue, and the segmented plastic nut (D) 1 、D 2 、…D n ) Each segment length range (L) of the billet segment of (2) 1 、L 2 、…L n ) All are between 5 and 50 mm;
step two: segmenting the first section into plastic nuts (D) 1 ) Is rotatably mounted into the metal tube (800) and the first segment is made to segment a plastic nut (D) 1 ) Can reach the deepest screwing position set by the metal pipe (800);
step three: segmenting the second section into plastic nuts (D) 2 ) Is rotated within the metal tube (800) to contact the first segmented plastic nut (D) 1 ) After the blank segment, reversely rotating the second segmented plastic nut (D) 2 ) The rotation degree of the blank section is within the range of 10-180 degrees, so that the second section of the sectional plastic nut (D) 2 ) With said first segmented plastic nut (D) 1 ) A separation gap is generated between the blank sections;
step four: repeating the steps until the nth section of the segmented plastic nut (D) n ) Is rotated in the metal tube (800) until it touches the (n-1) th segmented plastic nut (D) n-1 ) After the blank segment, reversely rotating the n-th segmented plastic nut (D) n ) The rotation degree of the blank section is 10-180 degrees, so that the nth section of the segmented plastic nut (D) n ) And the (n-1) th segmented plastic nut (D) n-1 ) A separation gap is generated between the blank sections;
step five: after the adhesive is solidified, all the segmented plastic nuts (D) of the plastic nut (600) are subjected to 1 、D 2 、…D n ) Is/are as followsThe blank section is uniformly processed with internal threads to form a segmented plastic nut (D) which is fixedly connected with one end of the metal pipe (800) through threads 1 、D 2 、…D n ) Said segmented plastic nut (D) 1 、D 2 、…D n ) And finishing the processing work of fixedly connecting with one end of the metal pipe (800) through threads.
11. A method of producing a segmented tappet device using plastic nut as claimed in any one of claims 1 to 3 and 5 to 9, wherein: at least two or more segments of the segmented plastic nut structure in the segmented tappet device using plastic nut (D) 1 、D 2 、…D n ) Meanwhile, the processing steps of fixedly connecting the metal pipe (800) with one end clamp spring are as follows:
firstly, processing n +1 clamp spring grooves (802) with the interval distance of 7-52 mm on the inner wall of one end of the metal pipe (800);
step two: processing n segmented plastic nuts (D) with the length of 5-50 mm 1 、D 2 、…D n ) The excircle diameter of the blank section is equal to the inner diameter of the metal pipe (800), and the distance between the clamp spring grooves (802) is larger than that of each segmented plastic nut (D) 1 、D 2 、…D n ) The length of the blank section and the difference between the lengths is the separation gap (delta) 1 、δ 2 、…δ n ) Each of said separation gaps (delta) 1 、δ 2 、…δ n ) Are all larger than 0.05 mm;
step three: the first clamp spring is clamped by a clamp spring clamp (K) 1 ) After the first clamp spring groove (802) which is the deepest in the metal pipe (800) is arranged, a first section of sectional plastic nut (D) with the excircle of the first section coated with bonding glue 1 ) Is introduced into a metal tube (800) which has been coated with a bonding agent, and the first section is made into a segmented plastic nut (D) 1 ) One end of the blank section touches the first clamp spring (K) 1 ) Then, the second circlip (K) is clamped by circlip pliers 2 ) A second clamp spring groove (802) arranged in the metal pipe (800), and a first section of sectional plastic nut (D) 1 ) Of the blank sectionOne end of the first clamp spring is connected with the second clamp spring (K) 2 ) Form a separation gap delta 1 ；
Step four: a second section of sectional plastic nut (D) with one section of outer circle coated with bonding glue 2 ) Is introduced into a metal tube (800) which has been coated with a bonding agent, and a second section is made to segment a plastic nut (D) 2 ) One end of the blank section touches the second clamp spring (K) 2 ) Then, the third circlip (K) is clamped by circlip pliers 3 ) A third snap spring groove (802) arranged in the metal pipe (800), and a second section of sectional plastic nut (D) 2 ) The other end of the blank section and a third snap spring (K) 3 ) Form a separation gap delta 2 ；
Step five: repeating the steps until a section of the n-th section of the segmented plastic nut (D) with the excircle coated with the adhesive glue n ) Is installed in a metal tube (800) which is already coated with adhesive glue, and the nth section of the segmented plastic nut (D) n ) One end of the blank section touches the nth snap spring (K) n ) Then, the (n + 1) th circlip (K) is clamped by a circlip clamp n+1 ) An n +1 th jump ring groove (802) arranged in the metal pipe (800), at the moment, an n-th section of sectional plastic nut (D) n ) The other end of the blank section is connected with the (n + 1) th snap spring (K) n+1 ) Form a separation gap delta n ；
Step six: after the bonding glue is solidified, the excircle of the metal tube (800) is clamped, and the segmented plastic nuts (D) are processed uniformly 1 、D 2 、…D n ) At least two or more segments of the segmented plastic nut structure (D) 1 、D 2 、…D n ) And meanwhile, the metal tube is fixedly connected with a clamp spring at one end of the metal tube (800) and is processed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2022/125468 WO2023061494A1 (en) | 2021-10-17 | 2022-10-14 | Sectional type push rod device using plastic nut, and machining method therefor |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111206640.4A CN113726280A (en) | 2021-10-17 | 2021-10-17 | Sectional type push rod device adopting plastic nut and machining method thereof |
| CN2021112066404 | 2021-10-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114938191A true CN114938191A (en) | 2022-08-23 |
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Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111206640.4A Withdrawn CN113726280A (en) | 2021-10-17 | 2021-10-17 | Sectional type push rod device adopting plastic nut and machining method thereof |
| CN202210259759.6A Pending CN114629424A (en) | 2021-10-17 | 2022-03-16 | Sectional type push rod device adopting plastic nut and machining method thereof |
| CN202210707215.1A Pending CN114938191A (en) | 2021-10-17 | 2022-06-21 | Sectional type push rod device adopting plastic nut and machining method thereof |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111206640.4A Withdrawn CN113726280A (en) | 2021-10-17 | 2021-10-17 | Sectional type push rod device adopting plastic nut and machining method thereof |
| CN202210259759.6A Pending CN114629424A (en) | 2021-10-17 | 2022-03-16 | Sectional type push rod device adopting plastic nut and machining method thereof |
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| Country | Link |
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| CN (3) | CN113726280A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023061494A1 (en) * | 2021-10-17 | 2023-04-20 | 常州姆驰机电有限公司 | Sectional type push rod device using plastic nut, and machining method therefor |
-
2021
- 2021-10-17 CN CN202111206640.4A patent/CN113726280A/en not_active Withdrawn
-
2022
- 2022-03-16 CN CN202210259759.6A patent/CN114629424A/en active Pending
- 2022-06-21 CN CN202210707215.1A patent/CN114938191A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023061494A1 (en) * | 2021-10-17 | 2023-04-20 | 常州姆驰机电有限公司 | Sectional type push rod device using plastic nut, and machining method therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113726280A (en) | 2021-11-30 |
| CN114629424A (en) | 2022-06-14 |
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