WO2023061494A1

WO2023061494A1 - Sectional type push rod device using plastic nut, and machining method therefor

Info

Publication number: WO2023061494A1
Application number: PCT/CN2022/125468
Authority: WO
Inventors: 杨宗行; 吴志坚; 徐�明
Original assignee: 常州姆驰机电有限公司
Priority date: 2021-10-17
Filing date: 2022-10-14
Publication date: 2023-04-20

Abstract

The present disclosure relates to a sectional type push rod device using a plastic nut, comprising an input shaft, an upper housing, a lower housing, a transmission device, a screw rod, a plastic nut, and a metal pipe. The plastic nut is of a sectional type plastic nut structure, and is formed by combining at least two or more sectional plastic nuts. A separation gap is formed between adjacent sectional plastic nuts, and at least two or more sectional plastic nuts of the sectional type plastic nut structure are fixedly connected by means of screw threads, or fixedly connected by means of pins or screws, or fixedly connected by means of snap rings to one end of the metal pipe simultaneously. The sectional type plastic nut structure has good self-lubricating performance, does not need frequent re-oiling, does not axially expand to be locked in a severe temperature environment having a large temperature difference and under the condition of bearing a large load, and is thus particularly suitable for push rod devices of solar power generation sun-tracking brackets, scientific experiments, desert or cold and tropical zone environments and the like. The present disclosure further relates to a machining method for the sectional type push rod device using a plastic nut.

Description

Segmented push rod device using plastic nut and its processing method

Cross References to Related Applications

This disclosure requires that the application number 202111206640.4 submitted to the China Patent Office on October 17, 2021, titled "Segmented push rod device using plastic nuts and its processing method" and the application submitted to the China Patent Office on November 11, 2021 The application number is 202111334904.4, the name is "Segmented Push Rod Device Using Plastic Nuts and Its Processing Method", and the application number 202210259759.6, which is named "Segmented Push Rod Device Using Plastic Nuts", was submitted to the China Patent Office on March 16, 2022. Push rod device and its processing method" and the application number 202220577675.2 submitted to the China Patent Office on March 16, 2022, titled "A Segmented Push Rod Device Using Plastic Nuts" and submitted to China on June 21, 2022 The application number of the patent office is 202210707215.1, the name is "Segmented push rod device using plastic nuts and its processing method" and the application number 202221636753.8 submitted to the China Patent Office on June 28, 2022, the name is "A plastic nut Nut Segmented Push Rod Device", the priority of the Chinese patent application, the entire content of which is incorporated in this disclosure by reference.

technical field

The disclosure belongs to the technical field of push rod devices, and in particular relates to a segmented push rod device using plastic nuts and a processing method thereof, in particular to a push rod device and a processing method suitable for solar power generation solar tracking brackets.

Background technique

The technology of using solar power generation devices to generate electricity is becoming more and more common around the world. In order to maximize the utilization of solar energy by solar power generation devices, the existing technology uses solar tracking brackets to realize solar sails in solar power generation devices. The plate follows the different spatial angle positions of the sun for real-time adjustment of the lifting and/or angle, while the lifting and/or angle adjustment functions of the solar tracking bracket are all realized by using a push rod device. Due to the harsh outdoor environment used by solar power generation devices, it usually needs to withstand the ambient temperature of -30°C to 70°C to work, and the solar power generation device needs to work in strong winds, and the wind force has a greater force on the solar power generation device. Therefore, there are strict requirements for the use of push rod devices, requiring each set of push rod devices to be able to withstand a static load of not less than 3 tons, and at the same time need to meet a dynamic load of not less than 1 ton.

In order to meet the requirement that the solar tracking bracket can work normally at an ambient temperature of -30°C to 70°C, and can withstand a static load of not less than 3 tons and a dynamic load of not less than 1 ton, and the working life is not less than 5000 hours. The push rod device that realizes the lifting and/or angle adjustment function of the solar tracking bracket has a designed service life of more than 10,000 cycles for lifting and/or angle adjustment, in which the screw and nut play a vital role , in order to reduce the wear of the screw and the nut during the reciprocating spiral movement, the screw is usually made of metal, but the nuts are usually made of copper nuts and plastic nuts.

For copper nuts, there are the following advantages: 1. Copper nuts are used in severe temperature environments with large temperature changes, and have high strength and can withstand large static and dynamic loads; 2. Copper nuts have a small linear expansion coefficient. The rise and fall of the ambient temperature will not cause the problem of axial swelling. However, the disadvantage of copper nuts is that copper nuts have poor self-lubricating performance in severe temperature environments with large temperature changes. Under a dynamic load of 1 ton, taking the lifting distance of copper nuts as an example, the number of lifting times is less than 150 times. Just must add lubricating grease frequently and could guarantee that it and the screw mandrel carry out the smooth motion of screw transmission process. If the lifting times without adding lubricating grease reaches about 200 times, the screw rod will completely wear the copper nut, causing the entire push rod device to lose its working ability. Generally, there are tens of thousands of push rod devices in a solar power plant, and frequent filling of lubricating grease requires huge investment in cost, manpower and material resources.

The advantages of plastic nuts are that they have good self-lubricating properties, and the lubrication of the entire life cycle can be satisfied by adding lubricating grease once, and the smooth transmission process between the screw and the screw can be guaranteed without frequent addition of lubricating oil. . However, plastic nuts have the following disadvantages: the plastic material has poor strength and cannot bear large static loads and dynamic loads. If the length of a single nut is increased to withstand high static loads and dynamic loads, it can be used in harsh environments with large temperature changes. If it is used under high conditions, it will cause axial swelling due to the large linear expansion coefficient of the plastic material.

Therefore, how to take advantage of the advantages that the push rod device using plastic nuts has good self-lubricating performance and does not require frequent refueling, and how to solve the problem that the push rod device using plastic nuts has a severe temperature environment with large temperature changes and bears a large load. Under the circumstances, under the drive of the screw mandrel, the problem of axial swelling will occur, which has been a technical problem that has not been solved by those skilled in the art for a long time.

Contents of the invention

The first purpose of the present disclosure is to provide a self-lubricating device that does not require frequent refueling, and can not produce axial swelling in severe temperature environments with large temperature differences and large loads. Segmented push rod device for plastic nuts.

The second purpose of the present disclosure is to provide a plastic lubricant that not only has good self-lubricating performance and does not require frequent refueling, but also does not cause axial swelling in severe temperature environments with large temperature differences and under large loads. A processing method for a segmented push rod device of a nut.

In order to solve the above problems, the technical solution to achieve the first objective of the present disclosure is a segmented push rod device using plastic nuts, including an input shaft, an upper casing, a lower casing, a transmission device, a screw rod, a plastic nut and The metal pipe, the upper casing and the lower casing are fixedly connected to form a reduction box and form a space for accommodating the transmission device. The transmission device is a gear transmission mechanism or a worm gear transmission mechanism, and the input shaft has a The exposed end on the outside of the reduction box body, and the extension end located inside the reduction box body, the extension end of the input shaft is a pinion shaft or a worm, and the pinion shaft or worm screw at the input extension end is respectively connected to the The first stage gear or worm gear of the transmission device meshes, and the final stage gear or worm wheel of the transmission device is fixedly connected or integrated with the screw rod to drive the screw rod to rotate, and the plastic nut is screw mounted on the screw rod. On the screw rod, and one end of the metal tube is fixedly connected with the outer periphery of the plastic nut, and when the screw rod rotates, it drives the plastic nut to perform a reciprocating linear motion on the screw rod; the improvement lies in:

The plastic nut is a segmented plastic nut structure, and the segmented plastic nut structure is composed of at least two or more segmented plastic nuts, wherein n≥2, and n is a positive integer, corresponding to There is a separation gap between adjacent segmented plastic nuts, and at least two or more segmented plastic nuts of the segmented plastic nut structure are fixedly connected to one end of the metal pipe at the same time.

Further, at least two or more segmented plastic nuts of the segmented plastic nut structure are fixedly connected to one end of the metal pipe by threads at the same time, or are fixedly connected by a circlip, or the segmented plastic nut structure At least two or more segmented plastic nuts are fixedly connected to one end of the metal pipe with pins and/or screws at the same time, or at least two or more segments of the segmented plastic nut structure Among the segmented plastic nuts, some segmented plastic nuts are fixedly connected with pins and/or screws at one end of the metal pipe, while the rest of the segmented plastic nuts are fixedly connected with one end of the metal tube with threads.

Further, at least two or more segmented plastic nuts of the segmented plastic nut structure are fixedly connected to one end of the metal pipe at the same time, and both ends of each of the segmented plastic nuts are provided with clips. The snap ring is clamped in the snap ring groove provided on the inner wall of the metal tube, one end of the first segmented plastic nut abuts against the first snap ring, and there is a gap between the other end and the second snap ring. Separation gap δ1, one end of the second segmented plastic nut abuts against the second circlip, and a separation gap δ2 is provided between the other end and the third circlip, one end of the nth segmented plastic nut and the nth circlip Abut against each other, there is a separation gap δn between the other end and the n+1th circlip; the length ranges L1, L2, ... Ln of each segment of the segmented plastic nuts after the plastic nuts are segmented are all 5-50mm Between them, the distance between each of the circlip grooves is greater than the length of each of the segmented plastic nuts D1, D2, ... Dn, and the separation gaps between the segmented plastic nuts and the circlips are δ1, δ2, ... δn are all greater than 0.05mm.

Further, after the plastic nuts are segmented, the length ranges L1, L2, ... Ln of each segment of the segmented plastic nuts are all between 5 and 50 mm, and the separation gap between adjacent segmented plastic nuts C1, C2, ... Cn are all larger than 0.05mm.

Further, the major diameter Φ2 of the external thread of the screw rod is between 15-35 mm, and the major diameter Φ4 of the internal thread of the plastic nut matched therewith is between 30-50 mm.

Further, it also has a drive motor, the drive motor is fixedly connected to the lower housing, the drive shaft of the drive motor is the input shaft of the reduction box body, and the motor end cover of the drive motor has a An integrally formed annular boss, the input shaft of the driving motor is equipped with a cap, the shape of the central hole of the cap matches the cross-sectional shape of the corresponding fitting part of the input shaft, and the cap has a A groove matching the annular boss of the end cover, and the cap and the annular boss of the motor end cover form a labyrinth oil-repelling structure.

Further, the reduction box body is provided with a housing installation head or a metal dust-proof pipe with a housing installation head, and the other end of the metal pipe is provided with a pipe wall connection hole or is fixedly connected with the metal pipe installation head.

Further, the reduction box body is fixedly connected with a housing installation head, and the other end of the metal pipe is fixedly connected with a metal pipe installation head, and the metal pipe installation head and the housing installation head are respectively located in the reduction box The two sides of the body, the transmission device is a three-stage gear transmission mechanism or a one-stage worm gear transmission mechanism.

Further, in the plastic nut, the helix angle Ψ≤2.90° of the internal thread of the segmented plastic nut in any section, and the screw rod has a helix angle Ψ of the internal thread of the segmented plastic nut Matching external thread.

In order to solve the above problems, the first technical solution to achieve the second objective of the present disclosure is a processing method of a segmented push rod device, the improvement of which is: the segmented push rod device using plastic nuts The processing steps of at least two or more segmented plastic nuts D1, D2, ... Dn of the segmented plastic nut structure being screwed and fixedly connected to one end of the metal pipe at the same time are as follows:

Step 1: Take the blank sections of the segmented plastic nuts D1, D2, ... Dn of the plastic nuts, which have processed external threads and have not processed internal threads, and place them on the external threads of each blank section and the internal thread of the metal pipe. Apply adhesive glue on the threads, the adhesive glue adopts thread fastening glue, and the length range of each section of the blank sections of the segmented plastic nuts D1, D2, ... Dn is between 20 mm and 30 mm;

Step 2: Rotate and install the blank section of the first segmented plastic nut D1 into the metal tube, and make the blank segment of the first segmented plastic nut D1 reach the set position of the metal tube deepest screw position;

Step 3: Rotate the blank section of the second segmented plastic nut D2 in the metal tube until it touches the blank segment of the first segment plastic nut D1, then reversely rotate the second segment segment The blank section of the plastic nut D2 has a rotation degree ranging from 10° to 180°, so that the blank section of the second segmented plastic nut D2 is separated from the blank segment of the first segmented plastic nut D1 Clearance C1;

Step 4: Repeat the above step by analogy until the installation of the blank section of the segmented plastic nut Dn-1 of the n-1 section is completed;

Step 5: Rotate the blank section of the nth segmented plastic nut Dn in the metal tube until it touches the blank segment of the n-1st segmented plastic nut Dn-1, and reversely rotate the segmented plastic nut Dn-1. The blank section of the nth segment plastic nut Dn, the rotation degree range is between 10° and 180°, so that the blank segment of the nth segment plastic nut Dn and the n-1 segment plastic nut Dn- A separation gap Cn-1 is generated between the blank segments of 1;

Step 6: After the adhesive glue is solidified, internal threads are uniformly processed on the blank sections of the plastic nuts D1, D2, ... Dn in all segments of the plastic nuts to form a part threaded and fixedly connected to one end of the metal pipe at the same time. Segmented plastic nuts D1, D2, ... Dn, the process of the segmented plastic nuts D1, D2, ... Dn being screwed and fixedly connected to one end of the metal pipe is completed.

In order to solve the above problems, the second technical solution to achieve the second objective of the present disclosure is a processing method of a segmented push rod device, the improvement of which is: the segmented push rod device using plastic nuts The processing steps of at least two or more segmented plastic nuts D1, D2, ... Dn of the segmented plastic nut structure being fixedly connected to one end of the metal pipe at the same time are as follows:

Step 1: Process n+1 circlip grooves 802 with an interval of 7 to 52 mm on the inner wall of one end of the metal pipe 800;

Step 2: Process n segments of segmented plastic nuts D1, D2, ... Dn with a length of 5 to 50 mm, and the outer diameter of the blank segment is equal to the inner diameter of the metal pipe 800, and make each clamp The distance between the spring grooves 802 is greater than the length of the blank section of each of the segmented plastic nuts D1, D2, ... Dn and the difference between the two is the separation gap (δ1, δ2, ... δn), and each of the separation gaps δ1, δ2, ... δn are all greater than 0.05mm;

Step 3: After installing the first circlip K1 into the deepest first circlip groove 802 in the metal tube 800 with a circlip pliers, put the first segmented plastic nut D1 blank coated with adhesive glue on the outer circle of the first section Put the segment into the metal tube 800 that has also been coated with adhesive glue, and make one end of the segmented plastic nut D1 blank segment of the first segment touch the first circlip K1, and then use the circlip pliers to clamp the second circlip K2 is put into the second circlip groove 802 in the metal tube 800, and at this moment, a separation gap δ1 is formed between the other end of the first segmented plastic nut D1 blank section and the second circlip K2;

Step 4: Put a section of the outer circle of the second segmented plastic nut D2 blank section coated with adhesive glue into the metal tube 800 that has been coated with adhesive glue, and make the second section segmented plastic nut D2 blank section One end touches the second circlip K2, and then use the circlip pliers to install the third circlip K3 into the third circlip groove 802 in the metal tube 800. At this time, the second segment plastic nut D2 blank section A separation gap δ2 is formed between the other end and the third circlip K3;

Step 5: Repeat the above step by analogy until the nth segmented plastic nut Dn blank section coated with adhesive glue on the outer circle is put into the metal tube 800 that has been coated with adhesive glue, and the nth section One end of the segmented plastic nut Dn blank section touches the nth circlip Kn, and then the n+1th circlip Kn+1 is packed into the n+1th circlip groove 802 in the metal tube with a circlip pliers. A separation gap δn is formed between the other end of the nth segmented plastic nut Dn blank segment and the n+1th circlip Kn+1;

Step 6: After the adhesive is cured, clamp the outer circle of the metal pipe 800, and uniformly process the internal threads of the segmented plastic nuts D1, D2, ... Dn, at least two sections or two sections of the segmented plastic nut structure The plastic nuts D1, D2, .

The beneficial effects of the present disclosure are: the segmented push rod device using plastic nuts has good self-lubricating performance and does not require frequent refueling, so that it does not need to re-lubricate during the entire life cycle The grease can move smoothly with the screw rod during the screw transmission process. At the same time, due to the adoption of two or more segmented plastic nuts and a plan with sufficient expansion gaps between each segmented plastic nut, the total length of the plastic nut is lengthened, and the ability to withstand large static loads is improved. Dynamic load capacity, and because the total length of the plastic nut is segmented, the length of each segment of the plastic nut is shortened, so the length of the segmented single segmented nut is shortened and it deforms in a harsh temperature environment with a large temperature difference The amount will become smaller, which greatly reduces the length deformation of each section of plastic nut, so that the length deformation of each section of plastic nut becomes very small, and the deformation is smaller than the tooth shape matched by the segmented plastic nut and the screw rod. Even if the plastic nut is used in a harsh temperature environment between -30°C and 70°C, there will be no axial swelling between the plastic nut and the screw rod. It is especially suitable for use in environments with large temperature differences. The push rod device of the solar power generation sun tracking bracket under the condition of severe temperature environment and heavy load.

The processing method of the segmented push rod device using plastic nuts provided by the present disclosure, the segmented push rod device using plastic nuts produced not only has good self-lubricating performance and does not require frequent refueling, but also can be used in places with large temperature differences. It will not swell axially under harsh temperature environment and under heavy load. It is not only especially suitable for the adjustment function of the lifting and/or angle adjustment function of the push rod device of the solar power tracking bracket push rod device in the severe temperature environment with large temperature difference and bearing a large load, it is not only especially suitable for the solar power tracking tracking The push rod device of the bracket is also suitable for special environments and occasions, such as scientific experiments, polar expeditions, deep sea exploration, deserts or cold tropical environments, etc. Among them, the second processing method of the segmented push rod device provided by the present disclosure also has the following advantages: the assembly process is simple and convenient, the production efficiency is high, and the processing is simple. The segmented plastic nuts D1, D2, ... Dn are not External threads are required, and internal threads are not required on the metal pipe 800, and several deep grooves in the metal pipe 800 are simpler and labor-saving than internal threads.

Description of drawings

FIG. 1 is a schematic diagram of the overall structure of the first embodiment of the segmented push rod device using plastic nuts of the present disclosure;

Fig. 2 is a partially cut-away structure schematic diagram of the plastic nut part of the first embodiment of the segmented push rod device using the plastic nut of the present disclosure;

Fig. 3 is a partial cross-sectional structural schematic diagram of the oil blocking structure of the first embodiment of the segmented push rod device using plastic nuts of the present disclosure;

Fig. 4 is an enlarged schematic diagram of a partially cut-away structure of the oil blocking structure of the first embodiment of the segmented push rod device using plastic nuts of the present disclosure;

5 is a schematic diagram of the first oil-blocking structure of the first embodiment of the segmented push rod device using plastic nuts according to the present disclosure;

Fig. 6 is a schematic diagram of the second oil-blocking structure of the first embodiment of the segmented push rod device using plastic nuts according to the present disclosure;

Fig. 7 is a schematic diagram of the installation of the input shaft and the lower housing of the oil blocking structure in the first embodiment of the segmented push rod device using plastic nuts;

8 is a schematic diagram of the overall structure of the second embodiment of the segmented push rod device using plastic nuts of the present disclosure;

9 is a schematic diagram of the overall structure of the third embodiment of the segmented push rod device using plastic nuts of the present disclosure;

Fig. 10 is a schematic structural view cut along the A-A direction of the third embodiment of the segmented push rod device using plastic nuts of the present disclosure;

Fig. 11 is a schematic diagram of the overall structure of the fourth embodiment of the segmented push rod device using plastic nuts of the present disclosure;

Fig. 12 is a schematic structural view cut along the B-B direction of the fourth embodiment of the segmented push rod device adopting plastic nuts of the present disclosure;

Fig. 13 is a schematic diagram of the first partially cut and enlarged structure of the segmented push rod device using plastic nuts of the present disclosure;

Fig. 14 is a schematic diagram of the nut structure of the segmented push rod device using plastic nuts of the present disclosure;

Fig. 15 is a schematic diagram of the second partially cut and enlarged structure of the segmented push rod device using plastic nuts of the present disclosure;

Fig. 16 is a schematic diagram of the third partially cut and enlarged structure of the segmented push rod device using plastic nuts of the present disclosure;

Fig. 17 is a schematic diagram of the fourth partially cut and enlarged structure of the segmented push rod device using plastic nuts of the present disclosure;

Fig. 18 is a structural schematic diagram of the helix angle of the plastic nut of the segmented push rod device adopting the plastic nut of the present disclosure;

Fig. 19 is a structural schematic diagram of the segmented push rod device using plastic nuts of the present disclosure, in which the plastic nuts and the metal pipes are fixedly connected by a circlip.

In the picture:

Drive motor 100, motor end cover 110, annular boss 111, input shaft 120, exposed end 121, upper housing 200, lower housing 300, transmission device 400, screw rod 500, plastic nut 600, first plastic nut D1 , the second section of plastic nut D2, the third section of plastic nut D3, the fourth section of plastic nut D4, the switch contact ring 700, the metal tube 800, the pin 801, the circlip groove 802, the circlip K, the first circlip K1, the second The second jumper K2, the third jumper K3, the housing installation head 901, and the metal pipe installation head 902.

Detailed ways

The technical solution of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure.

Example 1

As shown in Fig. 1, Fig. 2, Fig. 8, Fig. 9, Fig. 10, Fig. 11, Fig. 12, Fig. 13, Fig. 14, Fig. 15, Fig. 16, and Fig. 17, it is a kind of subassembly using plastic nuts in the present disclosure. A segmented push rod device, including an input shaft 120, an upper housing 200, a lower housing 300, a transmission device 400, a screw 500, a plastic nut 600 and a metal pipe 800, the upper housing 200 and the lower housing 300 The fixed connection constitutes a reduction box body and forms 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 has an exposed end 121 located outside the reduction box body. As well as the protruding end located inside the reduction box, the input shaft 120 and the exposed end 121 can be an integral structure, or can be a split-type installation integrated structure, and the protruding end of the input shaft 120 is a gear shaft or worm, and the gear shaft or worm at the input end of the input shaft 120 meshes with the first stage gear or worm wheel of the transmission device 400 respectively, and the input shaft 120 extends into the upper casing 200 and the lower casing. In the space enclosed by the housing 300, the end of the input shaft 120 is a spur shaft and meshes with the first-stage spur gear of the transmission 400; or the end of the input shaft 120 is a helical shaft and Mesh with the first-stage helical gear of the transmission device 400 ; or the end of the input shaft 120 is a worm and mesh with the first-stage worm gear of the transmission device 400 . The final gear or worm wheel of the transmission device 400 is fixedly connected or integrated with the screw rod 500 to drive the screw rod 500 to rotate, the plastic nut 600 is screw mounted on the screw rod 500, and the One end of the metal tube 800 is fixedly connected to the outer periphery of the plastic nut 600 , and when the screw rod 500 rotates, it drives the plastic nut 600 to perform reciprocating linear motion on the screw rod 500 . The metal pipe 800 and the plastic nut 600 are fixedly connected by threads. Its improvement lies in:

The plastic nut 600 is a segmented plastic nut structure, and the segmented plastic nut structure is composed of two or more segments of the segmented plastic nuts D1, D2, ... Dn, wherein n≥2 , and n is a positive integer, there is a separation gap between the adjacent segmented plastic nuts D1, D2, ... Dn, and at least two or more segmented plastic nuts of the segmented plastic nut structure D1 , D2 , . . . Dn are all fixedly connected to one end of the metal pipe 800 with threads, or fixedly connected with a circlip.

Here, according to the position where the segmented plastic nuts D1, D2, ... Dn are installed with one end of the metal pipe 800, the first segmented plastic nut that will be located at the deepest inside of the metal pipe 800 is defined as D1, and Based on the segmented plastic nut D1 of the first segment, the segmented plastic nuts from the second segment to the nth segment that will be located inside the metal tube 800 are sequentially defined as D2 to Dn. Between the segmented plastic nuts D1 , D2 , .

As shown in Fig. 1, Fig. 2, Fig. 8, Fig. 9, Fig. 11, Fig. 13, Fig. 15, Fig. 16, Fig. 17, and Fig. 19, in the segmented push rod device using plastic nuts of the present disclosure, the At least two or more segmented plastic nuts D1, D2, ... Dn of the segmented plastic nut structure are fixedly connected to one end of the metal pipe 800 by threads at the same time, or are fixedly connected by a circlip, or the segmented The segmented plastic nuts D1, D2, ... Dn of at least two sections or more than two sections of the plastic nut structure are simultaneously connected with one end pin and/or screw of the metal tube 800, or at least two sections of the segmented plastic nut structure Or more than two sections of segmented plastic nuts D1, D2, ... Dn, some segmented plastic nuts are fixedly connected to one end of the metal pipe 800 with pins and/or screws, while the rest of the segmented plastic nuts are connected to the ends of the metal tube 800. One end threaded fixed connection.

As shown in Figure 19, in the segmented push rod device using plastic nuts of the present disclosure, at least two or more segmented plastic nuts D1, D2, ... Dn of the segmented plastic nut structure are simultaneously connected with One end of the metal tube 800 is fixedly connected with a circlip, and both ends of each of the segmented plastic nuts D1, D2, ... Dn are provided with a circlip K, and the circlip K is clamped on the inner wall of the metal tube 800 to set In some circlip grooves 802, one end of the first segmented plastic nut D1 abuts against the first circlip K1, a separation gap δ1 is provided between the other end and the second circlip K2, and the second segmented plastic nut One end of D2 abuts against the second circlip K2, and a separation gap δ2 is provided between the other end and the third circlip K3. One end of the n-th segmented plastic nut Dn abuts against the n-th circlip Kn, and the other end abuts against the nth circlip Kn. There is a separation gap δn between the n+1th circlip Kn+1; each segment length range L1, L2, ... Ln of the segmented plastic nuts D1, D2, ... Dn after the plastic nut 600 is segmented Between 5mm and 50mm, the distance between each of the snap ring grooves 802 is greater than the length of each of the segmented plastic nuts D1, D2, ... Dn, and the segmented plastic nuts D1, D2, ... Dn are connected to the The separation gaps δ1, δ2, ... δn between the circlips K are all larger than 0.05mm.

As shown in Fig. 1, Fig. 2, Fig. 8, Fig. 9, Fig. 11, Fig. 13, Fig. 15, and Fig. 16, in the segmented push rod device using plastic nuts of the present disclosure, the plastic nut 600 has 4 The segmented plastic nuts D1 , D2 , D3 , D4 of each segment, and the segmented plastic nuts D1 , D2 , D3 , D4 of the 4 segments are screwed and fixedly connected to one end of the metal pipe 800 at the same time. Between the segmented plastic nuts D1 , D2 , . Of course, it is also possible that each section of the 4-section segmented plastic nuts D1, D2, D3, D4 is fixedly connected to the metal pipe 800 with a pin (see Figure 16), and the segmented plastic nuts D1, D2, ... The reliability of the fixed connection between D4 and the metal pipe 800 can also be enhanced by adding adhesive glue.

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 segmented push rod device using plastic nuts of the present disclosure, the Each section length range L1, L2, ... Ln of the segmented plastic nuts D1, D2, ... Dn after the plastic nut 600 is segmented is between 20 ~ 30mm, ensuring that each section of the segmented plastic nut can Under the condition that the static load and dynamic load can meet the design requirements, the preferred length of each section is 25±2mm, and the static load and dynamic load that can bear reach the maximum. In order to prevent the segmented plastic nuts from being swollen axially at high or low temperatures, the segmented push rod device using plastic nuts will fail to adjust the lifting and/or angle adjustment function of the push rod device for solar power generation tracking brackets. , the separation gaps C1, C2, ... Cn between the adjacent segmented plastic nuts D1, D2, ... Dn are all greater than 0.05mm.

As shown in Fig. 13, Fig. 15, Fig. 16 and Fig. 17, in the segmented push rod device using plastic nuts of the present disclosure, when the plastic nut 600 bears a dynamic load of 1 ton, all the segmented plastic nuts D1, D2, ...The total length E2 of Dn is between 50 and 150 mm, all segmented plastic nuts within the size range of this total length can bear an overall dynamic load of 1 ton, and a static load of 3 tons or more; the plastic nut 600 can bear a dynamic load of 2 tons When the total length E2 of all segmented plastic nuts D1, D2, ... Dn is between 100-200mm, all segmented plastic nuts within the size range of this total length can bear the overall dynamic load of 2 tons and the static load of 5-10 tons.

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 segmented push rod device using plastic nuts of the present disclosure, the The major diameter Φ2 of the external thread of the screw rod 500 is between 15-35 mm, and the major diameter Φ4 of the internal thread of the plastic nut 600 matched therewith is between 30-50 mm. The supporting selection of the screw rod 500 and the plastic nut 600 can make the segmented plastic nut 600 still have good comprehensive mechanical properties in the severe temperature environment with a large temperature difference, so that it can bear a large static load, Dynamic load capacity.

As shown in Fig. 1, Fig. 2, Fig. 3, Fig. 8, Fig. 9, Fig. 11, Fig. 13, Fig. 15, Fig. 16, and Fig. 17, in the segmented push rod device using plastic nuts of the present disclosure, the The part of the plastic nut 600 exposed at one end of the metal tube 800 is screwed and fixed with a switch contact ring 700. In order to prevent the nut 600 from being separated from the switch contact ring 700, anaerobic glue or Thread fastening glue for connection and fixation; or the nut 600 can be screwed into the inside of the metal pipe 800, and anaerobic glue or thread fastening glue is applied on the screwed place of the two for connection and fixation, while the One end of the metal tube 800 is screwed and fixed with a switch contact ring 700 . The switch contact ring 700 is equipped with a switch for starting the drive motor 100 in the electric push rod device. The moving parts touch the switch device on the switch contact ring 700, so that the drive motor 100 is energized and rotated to start, and the input shaft 120 drives the transmission device 400 to rotate, so that the screw rod 500 rotates, and then the drive is threaded and fixed with the metal tube 800 The connected nut 600 realizes the reciprocating linear motion, so as to realize the function of lifting and/or adjusting the angle of the external mechanism by the whole electric push rod device.

As shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, and Fig. 7, in the segmented push rod device adopting plastic nuts of the present disclosure, there is also a drive motor 100, and the drive motor 100 It is fixedly connected with the lower housing 300, the drive shaft of the drive motor 100 is the input shaft 120 of the reduction box body, and the outer end surface of the motor end cover 110 of the drive motor 100 has an integrally formed annular boss 111, the input shaft 120 of the driving motor 100 is equipped with a cap 130, the shape of the central hole of the cap 130 matches the cross-sectional shape of the corresponding matching part of the input shaft 120, and the shape of the central hole of the cap 130 is Toothed or circular, which matches the toothed or circular shape of the cross-section of the corresponding fitting part of the input shaft 120. The block cap 130 adopts an interference fit with the input shaft 120, and the cap 130 has The groove matching 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 space separation, and the separation gap can be Between 0.2-0.5 mm, the cap 130 and the annular boss 111 of the motor end cover 110 form a labyrinth oil-repelling structure. The separation gap of 0.2-0.5mm can make the block cap 130 integrated with the input shaft 120 of the drive motor 100 with an interference fit, not rub against the annular boss 111 driven by the rotation of the input shaft 120 , will not cause the rotation of the drive motor 100 to be blocked. At the same time, the cap 130 and the annular boss 111 form an oil-repelling structure that can prevent the lubricating grease from flowing from the reduction box to the inside of the drive motor, which solves the problem that the lubricating grease penetrates into the inside of the drive motor along the drive shaft of the drive motor .

As shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, and Fig. 7, in the segmented push rod device using plastic nuts of the present disclosure, the cap 130 passes through the input shaft 120 Fittingly, the cap 130 is an umbrella-shaped structure, and the cap 130 maintains a gap covering or partially covering the annular boss 111 of the motor end cover 110 . When the gear shaft or worm at the end of the input shaft 120 of the driving motor 100 is engaged with the first-stage spur shaft, helical gear shaft or worm gear of the transmission device 400 for transmission, since the cover 130 covers or partially covers the outside the annular boss 111 of the motor end cover 110, so that the lubricating grease between the transmission device 400 and the input shaft 120 for realizing the lubricating function is blocked outside the cover 130, and along the The outer surface of the umbrella-shaped structure of the cap 130 flows into the annular cavity space formed by connecting the motor end cover 110 and the lower housing 300, and the annular boss 111 inside the cap 130 is connected with the cap 130 forms a stepped labyrinth structure, even if 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, due to the stepped labyrinth The structure and the existence of the centrifugal force of the cap 130 and the annular boss 111 on the adhered grease still prevent the lubricating grease from flowing into the upper part of the annular boss 111 of the input shaft 120, so that the cap 130 and the annular The oil-blocking structure formed by the boss 111 can prevent the lubricating grease from flowing from the reduction box to the inside of the drive motor, which solves the problem that the lubricating grease infiltrates into the inside of the drive motor along the drive shaft of the drive motor in the prior art.

As shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, and Fig. 7, in the segmented push rod device using plastic nuts of the present disclosure, the outer circumference of the cap 130 is circular or The polygonal structure, the central hole of the cap 130 is in the shape of an inner gear ring or a circle. The annular boss 111 matching the cap 130 to form a labyrinth oil-repelling structure also has a circular or polygonal structure. The shape of the central hole of the cap 130 matches the cross-section of the corresponding matching part of the input shaft 120, and at the same time, the diversity of the central hole shapes of the cap 130 can make the cap 130 suitable for and matched with input shafts 120 of different shapes. , and is suitable for motor end caps 110 with different types of annular bosses 111, its versatility is wider, and the structure can be selected according to different motor end caps 110, which is more conducive to the connection between the cap 130 and the motor end cap 110 of the annular boss 111 match.

As shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, and Fig. 7, in the segmented push rod device using plastic nuts of the present disclosure, the cap 130 is made of engineering plastic or metal, The motor end cover 110 is made of metal. When the cap 130 and the motor end cover 110 are matched with each other, there are two combinations of materials as follows: 1. The materials of the cap 130 and the motor end cap 110 are both metal materials; 2. The motor end cover 110 is made of metal, and the cap 130 is made of engineering plastics. The combination of dissimilar materials can achieve the best anti-friction effect. When the drive motor 100 drives the cap 130 on the input shaft 120 to rotate, even if the cap 130 is connected to the motor end cover 110 The annular boss 111 generates friction, and the cap 130 will not be worn excessively, causing the cap 130 to be damaged.

As shown in Figure 1, Figure 2, Figure 3, Figure 8, Figure 9, and Figure 11, in the segmented push rod device using plastic nuts of the present disclosure, the reduction box is provided with a housing installation head 901 or There is a metal dust-proof pipe with a housing installation head 901, and the other end of the metal pipe 800 has a pipe wall connection hole or is fixedly connected with the metal pipe installation head 902, specifically shown as: the upper shell of the reduction box The housing installation head 901 is installed on the body 200 or the housing installation head 901 is installed on the lower housing 300 of the deceleration box; or the upper housing 200 of the deceleration box and the housing installation head 901 is integrated or the lower housing 300 of the reduction box body is integrated with the housing installation head 901; or the housing installation head 901 is located on the metal dustproof On the pipe, or on the parts that are installed and connected with the reduction box body. The shell mounting head 901 can be used to connect the fixed end of the external mechanism, and the metal pipe mounting head 902 can be used to connect the moving end of the external mechanism, and vice versa.

As shown in Fig. 1, Fig. 2, Fig. 3, Fig. 8, Fig. 9, and Fig. 11, in the segmented push rod device using plastic nuts of the present disclosure, the reduction box body is fixedly connected to the housing installation head 901, so The other end of the metal pipe 800 is fixedly connected with a metal pipe installation head 902, and the metal pipe installation head 902 and the housing installation head 901 are respectively located on both sides of the reduction box body. Of course, it can also be converted to a metal dust-proof pipe with a housing installation head 901 on the reduction box body, and the other end of the metal pipe 800 has a pipe wall connection hole, so that it is suitable for the position compact occasions.

As shown in Figure 1, Figure 2, Figure 3, Figure 8, Figure 9, and Figure 11, in the segmented push rod device using plastic nuts of the present disclosure, the transmission device 400 is a three-stage gear transmission mechanism or a one-stage Worm gear mechanism. The transmission device 400 is a gear transmission mechanism with no less than two stages or a one-stage or multi-stage worm gear transmission mechanism. Such a transmission device 400 can realize a simplified structure under the premise of satisfying the transmission function, wherein it is preferably to adopt a three-stage gear transmission mechanism or a one-stage worm gear transmission mechanism; Reach optimally make screw mandrel 500 drive nut 600 lift and realize the function of electric push rod device, also can choose to adopt two-stage or four-stage gear transmission mechanism or two-stage worm gear transmission mechanism.

As shown in Fig. 8, Fig. 9, Fig. 10, Fig. 11, and Fig. 12, in the segmented push rod device using plastic nuts of the present disclosure, the exposed end 121 of the input shaft 120 is controlled by external manual or electric control. The mechanisms are connected to input power to the push rod device, and the exposed end 121 of the input shaft 120 is a square, hexagonal, flat or splined keyway structure.

As shown in Figure 14, in the segmented push rod device using plastic nuts of the present disclosure, in the plastic nut 600, the helix angle of the internal thread of any segment of the segmented plastic nuts D1, D2, ... Dn Ψ≤2.90°, and the screw rod 500 has an external thread that matches the helix angle Ψ of the internal thread of the segmented plastic nuts D1, D2, ... Dn. Due to the smaller helix angles of the internal threads of the segmented plastic nuts D1, D2, ... Dn and the external threads of the screw rod, when the segmented plastic nuts D1, D2, ... Dn cooperate with the screw rod for screw drive push rod device After setting the lifting height and/or angle position, the segmented plastic nuts D1, D2, ... Dn can be used in harsh temperature environments with large temperature differences from -30°C to 70°C, especially for solar power generation tracking brackets. When the push rod device is working, it still has a high self-locking ability, that is, when the driving force is lost and the axial load force continues to exist, the screw rod will not produce relative rotation in the segmented plastic nuts D1, D2, ... Dn and Segmented plastic nuts D1, D2, ... Dn can self-lock the screw rod well, so that the whole push rod device can be well maintained at the set lifting height and/or angle position without causing equipment and safety problems. ACCIDENT.

As shown in Fig. 1, Fig. 2, Fig. 8, Fig. 9, Fig. 11, Fig. 13, and Fig. 15, the processing method of the first segmented push rod device provided by the present disclosure is improved in that: the plastic The processing of at least two or more segmented plastic nuts D1, D2, ... Dn of the segmented plastic nut structure in the segmented push rod device of the nut is screwed and fixedly connected to one end of the metal pipe 800 at the same time Proceed as follows:

Step 1: Take the blank sections of the segmented plastic nuts D1, D2, D3, and D4 of the plastic nut 600 that have processed external threads and have not processed internal threads, and place them on the external threads of each blank section and the metal pipe Apply adhesive glue on the internal thread of 800, the adhesive glue adopts thread fastening glue, and the length range L1, L2, L3, L4 of each section of the blank section of the segmented plastic nut D1, D2, D3, D4 All are between 20-30 mm, and the total length E2 of the blank segments of all segmented plastic nuts D1, D2, D3, D4 of the plastic nut 600 is between 50-200 mm;

Step 2: Rotate and install the blank segment of the first segmented plastic nut D1 into the metal tube 800, and make the blank segment of the first segmented plastic nut D1 reach the metal tube 800 The set deepest screw-in position;

Step 3: Rotate the blank section of the second segmented plastic nut D2 in the metal tube until it touches the blank segment of the first segmented plastic nut D1, and reversely rotate the second segment The blank segment of the segmented plastic nut D2 has a rotation degree range of 10 to 180°, so that the gap between the blank segment of the second segmented plastic nut D2 and the blank segment of the first segmented plastic nut D1 Create separation gap C1;

Step 4: Rotate the blank segment of the third segmented plastic nut D3 in the metal tube 800 until it touches the blank segment of the second segmented plastic nut D2, and reversely rotate the segmented plastic nut D3 The blank section of the three-section segmented plastic nut D3 has a rotation degree range of 10 to 180°, so that the blank section of the third segment plastic nut D3 and the blank segment of the second segment plastic nut D2 A separation gap C2 is generated between them;

Step 5: Rotate the blank section of the fourth segmented plastic nut D4 in the metal tube 800 until it touches the blank segment of the third segmented plastic nut D3, and reversely rotate the second segmented plastic nut D4. The blank section of the four-section segmented plastic nut D4 has a rotation degree range of 10 to 180°, so that the blank segment of the fourth segment plastic nut D4 is connected with the third segment segment plastic nut D3. A separation gap C3 is generated between the billet segments;

Step 6: After the adhesive is solidified, internal threads are uniformly processed on the blank sections of the plastic nuts D1, D2, D3, and D4 of the plastic nut 600 to form a thread that is fixed to one end of the metal pipe 800 at the same time. The segmented plastic nuts D1 , D2 , D3 , D4 are connected, and the processing of the segmental plastic nuts D1 , D2 , D3 , D4 and one end of the metal pipe 800 is screwed and fixedly connected.

Example 2

As shown in Figure 16, the present disclosure also provides another segmented push rod device using plastic nuts, the difference from Embodiment 1 is that the segmented plastic nuts D1, D2, ... Dn are the same as the segmented plastic nuts The structural form of the connection of the metal pipe 800 is a connection structure that adopts a pin 801 fixed connection and/or a screw fixed connection. The first segmented plastic nut in the deepest part of the metal tube 800 is D1, and the segmented plastic nuts at the rear of the metal tube 800 are defined as D2 based on the first segmented plastic nut D1. until Dn. The segmented plastic nuts D1, D2, ... Dn described in this embodiment adopt a segmented structure of more than two segments, that is, 4 segmented plastic nuts D1, D2, ... D4, and each segment adopts a pin 801 or a screw and The metal pipe 800 is fixedly connected, and the reliability of the fixed connection between the segmented plastic nuts D1, D2, ... D4 and the metal pipe 800 can be enhanced by adding adhesive glue. Of course, the connection structure using pin-fixed connection or screw-fixed connection in this embodiment may also be replaced by a connection structure that uses both pin-fixed connection and screw-fixed connection.

Example 3

As shown in Figure 17, the present disclosure also provides another segmented push rod device using plastic nuts, which is different from Embodiment 1 and Embodiment 2 in that: wherein the segmented plastic nuts D1, D2, The structural form of the fixed connection between Dn and the metal pipe 800 is a connection structure in which the fixed connection of the pin 801 and the fixed connection of the screw are used at the same time, that is, mixed use. The position where the segmented plastic nuts D1, D2, ... Dn are installed with the metal pipe 800 is defined as the first segmented plastic nut located at the deepest inside of the metal tube 800 is D1, and the first segment is divided into segments Based on the plastic nut D1, the plastic nuts located in the rear part of the metal pipe 800 are sequentially defined as D2 to Dn. The segmented plastic nuts D1, D2, ... Dn in this embodiment adopt a two-stage structure, that is, only the first segmented plastic nut D1 and the second segmented plastic nut D2 are combined, wherein the The first segmented plastic nut D1 is fixedly connected to the metal pipe 800 through threaded connection, and the second segmented plastic nut D2 is fixedly connected to the metal pipe 800 by using a pin 801 . The reliability of the fixed connection between the first segmented plastic nut D1 and the metal pipe 800 can also be enhanced by adding adhesive glue. Of course, in this embodiment, the first section of segmented plastic nut D1 can be fixedly connected by pins and the second section of segmented plastic nut D2 can be fixedly connected by thread. It can also be replaced by screw fixed connection and screw thread A connection structure that is used in conjunction with a mix of connections.

Example 4

As shown in Figure 19, the processing method of the second segmented push rod device provided by the present disclosure is improved in that: the segmented plastic nut structure in the segmented push rod device using plastic nuts The processing steps of at least two or more segmented plastic nuts D1, D2, D3, D4 being fixedly connected to one end of the metal tube 800 at the same time are as follows:

Step 1: Process five snap ring grooves 802 with a distance of 7 to 52 mm on the inner wall of one end of the metal pipe 800;

Step 2: Process 4 blank sections of segmented plastic nuts D1, D2, D3, and D4 with a length between 5 and 50 mm, and the outer diameter of the blank section is equal to the inner diameter of the metal pipe 800, and make each The distance between the snap ring grooves 802 is greater than the length of the blank section of each of the segmented plastic nuts D1, D2, D3, D4 and the difference between the two is the separation gap δ1, δ2, δ3, δ4, each of the separation gaps δ1, δ2, δ3, δ4 are all greater than 0.05mm;

Step 3: After installing the first circlip K1 into the deepest first circlip groove 802 in the metal tube 800 with a circlip pliers, put the first segment plastic nut D1 whose outer circle is coated with adhesive glue The blank section is loaded into the metal tube 800 that has also been coated with adhesive glue, and one end of the blank section of the first segmented plastic nut D1 is touched to the first snap ring K1, and then the second snap ring is clamped with snap ring pliers. The circlip K2 is put into the second circlip groove 802 in the metal tube 800, and at this time, a separation gap δ1 is formed between the other end of the blank section of the first segmented plastic nut D1 and the second circlip K2;

Step 4: Put the blank segment of the second segmented plastic nut D2 whose outer circle is coated with adhesive glue into the metal tube 800 that has been coated with adhesive adhesive, and make the blank segment of the second segmented plastic nut D2 One end of the section touches the second circlip K2, and then the third circlip K3 is put into the third circlip groove 802 in the metal tube 800 with the circlip pliers. At this time, the plastic nut D2 of the second section is A separation gap δ2 is formed between the other end of the blank segment and the third circlip K2;

Step 5: Repeat the above step by analogy until the blank section of the fourth section plastic nut D4 whose outer circle is coated with adhesive glue is put into the metal tube 800 that has been coated with adhesive glue, and the fourth section is divided One end of the blank section of the section plastic nut D4 touches the 4th circlip K4, and then the 5th circlip K5 is packed into the 5th circlip groove 802 in the metal tube 800 with the circlip pliers. A separation gap δ5 is formed between the other end of the blank section of the segmented plastic nut Dn and the fifth circlip K5;

Step 6: After the adhesive is cured, clamp the outer circle of the metal pipe 800, and uniformly process the internal threads of the segmented plastic nuts D1, D2, D3, and D4. At least two or more sections of the segmented plastic nut structure At the same time, more than two segmented plastic nuts D1, D2, D3, D4 are fixedly connected to one end of the metal tube 800 by the clamp spring and the processing is completed.

The second processing method of the segmented push rod device using plastic nuts provided by this disclosure is the processing of the connection structure in which the segmented plastic nuts D1, D2, ... Dn and the metal pipe 800 are fixedly connected by a circlip method.

Claims

A segmented push rod device using plastic nuts, comprising an input shaft (120), an upper casing (200), a lower casing (300), a transmission device (400), a screw rod (500), a plastic nut (600 ) and a metal pipe (800), the upper casing (200) and the lower casing (300) are fixedly connected to form a reduction box and form a space for accommodating the transmission (400), and the transmission (400 ) is a gear transmission mechanism or a worm gear transmission mechanism, the input shaft (120) has an exposed end (121) located outside the reduction box body, and an extended end located inside the reduction box body, the input shaft The extending end of (120) is gear shaft or worm screw, and the gear shaft or worm screw of described input shaft (120) extending end is meshed with the first stage gear or worm gear of described transmission device (400) respectively, and described transmission device (400) final stage gear or worm wheel is fixedly connected with described screw mandrel (500) or is made into one, drives described screw mandrel (500) to rotate, and described plastic nut (600) is screw-mounted on described screw mandrel (500) ), and one end of the metal pipe (800) is fixedly connected to the outer circumference of the plastic nut (600), and when the screw mandrel (500) rotates, it drives the plastic nut (600) on the screw mandrel (500 ) to do reciprocating linear motion; it is characterized in that:

The plastic nut (600) is a segmented plastic nut structure, and the segmented plastic nut structure is composed of at least two or more segmented plastic nuts (D1, D2, ... Dn), wherein n≥2, and n is a positive integer, there is a separation gap between adjacent segmented plastic nuts (D1, D2, ... Dn), and at least two or more segments of the segmented plastic nut structure The segmented plastic nuts (D1, D2, ... Dn) are fixedly connected to one end of the metal pipe (800) at the same time.
The segmented push rod device using plastic nuts according to claim 1, characterized in that: the segmented plastic nuts (D1, D2, ... Dn ) is fixedly connected with one end of the metal pipe (800) by thread, or by a circlip, or by at least two or more segmented plastic nuts (D1, D2, ... Dn) At the same time, it is fixedly connected with one end of the metal pipe (800) by pins and/or screws, or at least two or more segmented plastic nuts of the segmented plastic nut structure (D1, D2, ...Dn) some segmented plastic nuts are fixedly connected to one end of the metal pipe (800) with pins and/or screws, while the rest of the segmented plastic nuts are fixedly connected to one end of the metal pipe (800) by threads.
The segmented push rod device using plastic nuts according to claim 1, characterized in that: the segmented plastic nuts (D1, D2, ... Dn ) is fixedly connected with one end of the metal pipe (800) at the same time, and each of the two ends of the segmented plastic nuts (D1, D2, ... Dn) is provided with a circlip (K), and the circlip (K) ) is clamped in the ring groove (802) provided on the inner wall of the metal pipe (800), one end of the first segmented plastic nut (D1) is against the first ring (K1), and the other end is against the first ring (K1). There is a separation gap δ1 between the two circlips (K2), one end of the second segmented plastic nut (D2) is against the second circlip (K2), and the other end is set between the third circlip (K3). There is a separation gap δ2, one end of the segmented plastic nut (Dn) of the nth segment is in contact with the nth circlip (Kn), and a separation gap δn is provided between the other end and the n+1th circlip (Kn+1); After the plastic nut (600) is segmented, the length ranges L1, L2, ... Ln of each section of the segmented plastic nuts (D1, D2, ... Dn) are all between 5 ~ 50mm, and each of the circlip grooves The distance between (802) is greater than the length of each segmented plastic nut (D1, D2, ... Dn), and the distance between the segmented plastic nut (D1, D2, ... Dn) and the circlip (K) The separation gaps (δ1, δ2, ... δn) between them are all greater than 0.05mm.
The segmented push rod device using plastic nuts according to claim 1, characterized in that: each segment of the segmented plastic nuts (D1, D2, ... Dn) after the plastic nut (600) is segmented The length ranges (L1, L2, ... Ln) are all between 5 and 50 mm, and the separation gaps (C1, C2, ... Cn) between adjacent segmented plastic nuts (D1, D2, ... Dn) are all Greater than 0.05mm.
The segmented push rod device using plastic nuts according to claim 1, characterized in that: the large diameter Ф2 of the external thread of the screw rod (500) is between 15 and 35 mm, and the matched The major diameter Ф4 of the internal thread of the plastic nut (600) is between 30 and 50 mm.
The segmented push rod device using plastic nuts according to claim 1, characterized in that: it also has a driving motor (100), and the driving motor (100) is fixedly connected to the lower housing (300), so that The driving shaft of the driving motor (100) is the input shaft (120) of the reduction box body, and the outer end surface of the motor end cover (110) of the driving motor (100) has an integrally formed annular boss (111) , the input shaft (120) of the drive motor (100) is equipped with a cap (130), the shape of the central hole of the cap (130) matches the cross-sectional shape of the corresponding fit of the input shaft (120), The cap (130) has a groove matching the annular boss (111) of the motor end cover (110), and the cap (130) matches the annular boss of the motor end cover (110). The platform (111) forms a labyrinth oil-repelling structure.
The segmented push rod device using plastic nuts according to claim 1, characterized in that, the reduction box body is provided with a housing installation head (901) or a metal housing with a housing installation head (901). For the dust-proof pipe, the other end of the metal pipe (800) is provided with a pipe wall connection hole or fixedly connected with the metal pipe installation head (902).
The segmented push rod device using plastic nuts according to claim 1, characterized in that, the reduction box body is fixedly connected with a housing installation head (901), and the other end of the metal pipe (800) is fixedly connected There is a metal pipe installation head (902), and the metal pipe installation head (902) and the shell installation head (901) are respectively located on both sides of the reduction box body, and the transmission device (400) is three-stage Gear transmission mechanism or one-stage worm gear transmission mechanism.
The segmented push rod device using plastic nuts according to claim 1, characterized in that: in the plastic nuts (600), any section of the segmented plastic nuts (D1, D2, ... Dn) inside The helix angle Ψ of the thread is ≤2.90°, and the screw rod (500) has an external thread matching the helix angle Ψ of the internal thread of the segmented plastic nuts (D1, D2, ... Dn).
A method for producing a segmented push rod device using plastic nuts according to any one of claims 1, 2, 4-9, characterized in that: in the segmented push rod device using plastic nuts The processing steps of at least two or more segmented plastic nuts (D1, D2, ... Dn) of the segmented plastic nut structure being screwed and fixedly connected to one end of the metal pipe (800) at the same time are as follows:

Step 1: Take the blank sections of each segmented plastic nut (D1, D2, ... Dn) of the plastic nut (600) that have processed external threads and have not yet processed internal threads, and place them on the external threads of each blank section and on the blank sections. Smear adhesive glue on the inner thread of the metal pipe (800), the adhesive glue adopts thread fastening glue, and the length range (L1 , L2, ... Ln) are all between 5 ~ 50mm;

Step 2: Rotate and install the blank segment of the first segmented plastic nut (D1) into the metal tube (800), and enable the blank segment of the first segmented plastic nut (D1) to reach The deepest screw-in position set by the metal pipe (800);

Step 3: Rotate the blank section of the second segmented plastic nut (D2) in the metal tube (800) until it touches the blank segment of the first segmented plastic nut (D1), Reversely rotate the blank section of the second segmented plastic nut (D2), the rotation degree ranges from 10 to 180°, so that the blank segment of the second segmented plastic nut (D2) is aligned with the first A separation gap (C1) is generated between the blank segments of a segmented plastic nut (D1);

Step 4: Repeat the above step by analogy until the installation of the blank section of the segmented plastic nut (Dn-1) of the n-1 section is completed;

Step 5: Rotate the blank section of the nth segmented plastic nut (Dn) in the metal tube (800) until it touches the n-1st segmented plastic nut (Dn-1) After the blank section, reversely rotate the blank section of the nth segmented plastic nut (Dn), the rotation degree ranges from 10 to 180°, so that the blank segment of the nth segmented plastic nut (Dn) A separation gap (Cn-1) is generated between the blank segment of the n-1 segment plastic nut (Dn-1);

Step 6: After the adhesive glue is solidified, internal threads are uniformly processed on the blank sections of all plastic nuts (D1, D2, ... Dn) of the plastic nut (600) to form internal threads simultaneously with the metal pipe (800 ) of segmented plastic nuts (D1, D2, ... Dn) that are fixedly connected to one end of the metal pipe (800), the processing work of the segmented plastic nuts (D1, D2, ... Dn) being fixedly connected to one end of the metal pipe (800) Finish.
A method for producing a segmented push rod device using plastic nuts according to any one of claims 1-3, 5-9, characterized in that: the segmented push rod device using plastic nuts The processing steps of at least two or more segmented plastic nuts (D1, D2, ... Dn) of the segmented plastic nut structure being fixedly connected to one end of the metal tube (800) at the same time are as follows:

Step 1: machining n+1 circlip grooves (802) at an interval of 7 to 52 mm on the inner wall of one end of the metal pipe (800);

Step 2: Process n segmented plastic nuts (D1, D2, ... Dn) with a length between 5 and 50 mm and the outer diameter of the blank is equal to the inner diameter of the metal pipe (800), And make the distance between each snap ring groove (802) greater than the length of the blank section of each of the segmented plastic nuts (D1, D2, ... Dn) and the difference between the two is the separation gap (δ1, δ2, ... δn), Each of the separation gaps (δ1, δ2, ... δn) is greater than 0.05mm;

Step 3: After installing the first circlip (K1) into the deepest first circlip groove (802) in the metal tube (800) with a circlip pliers, put the first section of the outer circle coated with adhesive glue Put the blank section of the segmented plastic nut (D1) into the metal tube (800) coated with adhesive glue, and make one end of the blank section of the first segmented plastic nut (D1) touch the first retaining ring (K1), and then use the circlip pliers to put the second circlip (K2) into the second circlip groove (802) in the metal tube (800), at this time the blank of the first segmented plastic nut (D1) A separation gap δ1 is formed between the other end of the segment and the second circlip (K2);

Step 4: Put the blank segment of the second segmented plastic nut (D2) coated with adhesive glue on the outer circle into the metal tube (800) that has been coated with adhesive adhesive, and make the second segment segmented plastic nut (D2) One end of the blank section of the nut (D2) touches the second circlip (K2), and then use the circlip pliers to install the third circlip (K3) into the third circlip groove (802) in the metal tube (800) ), at this time, a separation gap δ2 is formed between the other end of the blank section of the second segmented plastic nut (D2) and the third circlip (K3);

Step 5: Repeat the above step by analogy until the blank section of the nth segmented plastic nut (Dn) whose outer circle is coated with adhesive glue is put into the metal pipe (800) that has been coated with adhesive glue, And make one end of the blank segment of the nth segmented plastic nut (Dn) touch the nth circlip (Kn), and then use the circlip pliers to install the n+1th circlip (Kn+1) into the metal tube The n+1 snap ring groove (802) in (800), at this moment, the other end of the blank section of the n segment plastic nut (Dn) forms a separation between the n+1 snap ring (Kn+1) Gap δn;

Step 6: After the adhesive is cured, clamp the outer circle of the metal pipe (800), and uniformly process the internal threads of the segmented plastic nuts (D1, D2, ... Dn), and the segmented plastic nut structure has at least Two or more segmented plastic nuts (D1, D2, ... Dn) are fixedly connected to one end of the metal pipe (800) at the same time, and the processing work is completed.