阅读说明：本技术 一种可用于连杆机构的锁紧装置 (Locking device for link mechanism ) 是由 王雯 陆云杰 任毅 于 2020-12-28 设计创作，主要内容包括：本发明属于飞机操纵系统设计领域,具体涉及一种可用于连杆机构的锁紧装置,包括旋转轴一、摇臂一、连杆、摇臂二、旋转轴二、锁紧卡箍和定位销,本发明生产加工工艺简单,安装便捷,可靠性和安全性比较高,特别是所述锁紧卡箍不仅能够保证连杆的运动形式的多样化,而且其自身具有金属记忆功能,能有效防止定位销脱出。(The invention belongs to the field of design of airplane control systems, and particularly relates to a locking device for a connecting rod mechanism, which comprises a first rotating shaft, a first rocker arm, a connecting rod, a second rocker arm, a second rotating shaft, a locking clamp and a positioning pin.)

1. A locking device usable with a link mechanism, characterized in that: comprises a first rotating shaft (1), a first rocker (2), a connecting rod (3), a second rocker (5), a second rotating shaft (4), a locking clamp (6) and a positioning pin (7),

the rocker arm I (2) and the rocker arm II (5) comprise fork ends and shaft hole ends, one end of the rotating shaft I (1) is fixedly connected with the shaft hole end of the rocker arm I (2), and one end of the rotating shaft II (4) is fixedly connected with the shaft hole end of the rocker arm II (5);

a group of positioning holes 1b are formed in the fork lug end of the rocker arm I (2), a group of positioning holes 2b are formed in the fork lug end of the rocker arm II (5), two mounting lugs are arranged at two ends of the connecting rod (3), positioning holes c and positioning holes d are formed in the mounting lugs, and a group of positioning holes 6a and a group of positioning holes 6b are formed in two sides of the locking clamp (6);

a positioning hole c at one end of the connecting rod (3), a positioning hole 1b of the rocker arm I (2) and a positioning hole 6b of the locking clamp (6) are concentric, the rocker arm I (2), the connecting rod (3) and the locking clamp (6) are connected through a positioning pin (7), the locking clamp (6) is arranged outside a fork end of the rocker arm I (2), the connecting rod (3) is arranged inside the fork end of the rocker arm I (2),

the locating hole d of the other end of the connecting rod (3), the locating hole 2b of the second rocker arm (5) and the locating hole 6a of the locking clamp (6) are concentric, the second rocker arm (5), the connecting rod (3) and the locking clamp (6) are connected through the locating pin (7), the locking clamp (6) is connected to the outside of the fork end of the second rocker arm (5), and the connecting rod (3) is arranged inside the fork end of the second rocker arm (5).

2. A locking device usable with a link mechanism according to claim 1, wherein: the fork ear end of the rocker arm I (2) is also provided with a positioning hole 1a, the positioning hole 1a is concentric with a positioning hole 6a arranged on a locking clamp (6) outside the rocker arm I (2), and the positioning hole 1a and the positioning hole 6a are also provided with positioning pins (7) to prevent the locking clamp (6) from falling off from the rocker arm I (2).

3. A locking device usable with a link mechanism according to claim 1, wherein: the fork ear end of the second rocker arm (5) is also provided with a positioning hole 2a, the positioning hole 2a is concentric with a positioning hole 6b arranged on a locking clamp (6) outside the second rocker arm (5), and positioning pins (7) are also arranged on the positioning hole 2a and the positioning hole 6b to prevent the locking clamp (6) from falling off from the second rocker arm (5).

4. A locking device usable with a link mechanism according to claim 1, wherein: the locking clamp is of a structure shaped like a Chinese character 'ji', and the positioning holes 6a and 6b are respectively arranged on two sides of the locking clamp.

5. A locking device usable with a link mechanism according to claim 1, wherein: the positioning pin (7) is a cylindrical pin with two thin ends and a thick middle section, the two ends of the positioning pin (7) are in clearance fit with the positioning hole 6a and the positioning hole 6b on the locking clamp (6), and the middle section of the positioning pin (7) is in clearance fit with the positioning hole 1a and the positioning hole 1b on the rocker arm I (2) and the positioning holes 2a and 2b on the rocker arm II (5).

6. A locking device usable with a link mechanism according to claim 1, wherein: the locking clamp (6) is made of beryllium bronze strip QBe2, and the variety specification of the locking clamp is YS/T323-2002.

7. A locking device usable with a link mechanism according to claim 1, wherein: one end of the first rotating shaft (1) is in interference connection with the shaft hole end of the first rocker arm (2), and one end of the second rotating shaft (4) is in interference connection with the shaft hole end of the second rocker arm (5).

8. A locking device usable with a link mechanism according to claim 1, wherein: the positioning pin (7) is made of stainless steel 1Cr18Ni9Ti and is subjected to surface passivation treatment.

9. A locking device usable with a link mechanism according to claim 1, wherein: the first rotating shaft (1) and the second rotating shaft (4) are installed on the operating mechanism body, and the first rotating shaft (1) and the second rotating shaft (4) are parallel to each other.

Technical Field

The invention belongs to the field of design of airplane control systems, and particularly relates to a locking device for a connecting rod mechanism.

Background

With the continuous development of the control system of the fly-by-wire aircraft, the control system not only requires light weight, but also has strict requirements on localization and cost control. In a manipulation system, some remote actions need to be realized through a link mechanism, and although the surface of the joint of the link mechanism is a cylindrical surface or a plane, higher manufacturing precision is easier to obtain, the connection between the links determines the accuracy of motion transmission, and the accuracy of motion transmission of the link mechanism often affects the accuracy of manipulation. The connecting rods which are most commonly used at present are directly connected through pins, or are fastened through rod end bearings matched with bolts and nuts. The fastening by pins has the disadvantages that: the requirement for machining precision is high, and tooling cooperation is needed during assembly. The rod end bearing is matched with the screw and the nut for connection, and the defects are that: the weight is not easy to be reduced, and the cost is higher.

Disclosure of Invention

The purpose of the invention is: a locking device is provided that may be used with a linkage mechanism for securing and connecting between links in an aircraft operating system. The locking device mainly realizes the fastening effect between the connecting rods through the two positioning pins and the locking hoop, and can well meet the requirements of the connecting rod mechanism on realizing various motion laws and motion tracks.

The technical scheme of the invention is as follows:

a locking device for a connecting rod mechanism comprises a first rotating shaft (1), a first rocker arm (2), a connecting rod (3), a second rocker arm (5), a second rotating shaft (4), a locking clamp (6) and a positioning pin (7),

the rocker arm I (2) and the rocker arm II (5) comprise fork ends and shaft hole ends, one end of the rotating shaft I (1) is fixedly connected with the shaft hole end of the rocker arm I (2), and one end of the rotating shaft II (4) is fixedly connected with the shaft hole end of the rocker arm II (5);

a group of positioning holes 1b are formed in the fork lug end of the rocker arm I (2), a group of positioning holes 2b are formed in the fork lug end of the rocker arm II (5), two mounting lugs are arranged at two ends of the connecting rod (3), positioning holes c and positioning holes d are formed in the mounting lugs, and a group of positioning holes 6a and a group of positioning holes 6b are formed in two sides of the locking clamp (6);

a positioning hole c at one end of the connecting rod (3), a positioning hole 1b of the rocker arm I (2) and a positioning hole 6b of the locking clamp (6) are concentric, the rocker arm I (2), the connecting rod (3) and the locking clamp (6) are connected through a positioning pin (7), the locking clamp (6) is arranged outside a fork end of the rocker arm I (2), the connecting rod (3) is arranged inside the fork end of the rocker arm I (2),

the locating hole d of the other end of the connecting rod (3), the locating hole 2b of the second rocker arm (5) and the locating hole 6a of the locking clamp (6) are concentric, the second rocker arm (5), the connecting rod (3) and the locking clamp (6) are connected through the locating pin (7), the locking clamp (6) is connected to the outside of the fork end of the second rocker arm (5), and the connecting rod (3) is arranged inside the fork end of the second rocker arm (5).

Furthermore, the fork lug end of the rocker arm I (2) is also provided with a positioning hole 1a, the positioning hole 1a is concentric with a positioning hole 6a arranged on a locking clamp (6) outside the rocker arm I (2), and a positioning pin (7) is also arranged on the positioning hole 1a and the positioning hole 6a to prevent the locking clamp (6) from falling off from the rocker arm I (2).

Furthermore, the fork lug end of the second rocker arm (5) is also provided with a positioning hole 2a, the positioning hole 2a is concentric with a positioning hole 6b arranged on a locking clamp (6) outside the second rocker arm (5), and positioning pins (7) are also arranged on the positioning hole 2a and the positioning hole 6b to prevent the locking clamp (6) from falling off from the second rocker arm (5).

Furthermore, the locking clamp is of a structure shaped like a Chinese character 'ji', and the positioning holes 6a and 6b are respectively arranged on two sides of the locking clamp.

Furthermore, the positioning pin (7) is a cylindrical pin with two thin ends and a thick middle section, the two ends of the positioning pin (7) are in clearance fit with the positioning hole 6a and the positioning hole 6b on the locking clamp (6), and the middle section of the positioning pin (7) is in clearance fit with the positioning hole 1a and the positioning hole 1b on the rocker arm I (2) and the positioning holes 2a and 2b on the rocker arm II (5).

Furthermore, the locking clamp (6) is made of a beryllium bronze strip QBe2 with the specification of YS/T323-2002, the beryllium bronze strip QBe2 is strong in flexibility, and the locking clamp can restore to the original state after bearing load.

Further, the shaft hole end interference of rotation axis one (1) one end and rocking arm one (2) is connected, the shaft hole end interference of rotation axis two (4) one end and rocking arm two (5) is connected, is favorable to reducing spare part, and the transmission motion that the interference connection can be accurate.

Further, the positioning pin (7) is made of stainless steel 1Cr18Ni9Ti, the surface treatment is passivation, and the three-proofing performance of the positioning pin is enhanced.

Furthermore, the first rotating shaft (1) and the second rotating shaft (4) are arranged on the operating mechanism body, and the first rotating shaft (1) and the second rotating shaft (4) are parallel to each other, so that the motion transmission of parallel shafts is realized.

The invention has the beneficial effects that:

the locking clamp has the advantages of simple production and processing technology, convenience and quickness in installation and higher reliability and safety, and particularly, the locking clamp can ensure the diversification of the motion forms of the connecting rod, has a metal memory function and can effectively prevent the positioning pin from falling off.

Drawings

FIG. 1 is an isometric view of the general assembly of a locking device useful in a linkage mechanism of the present invention;

FIG. 2 is an isometric view of a first axis of rotation;

FIG. 3 is an isometric view of a first rocker arm;

FIG. 4 is an isometric view of the connecting rod;

FIG. 5 is an isometric view of the second pivot axis;

FIG. 6 is an isometric view of rocker arm two;

FIG. 7 is an isometric view of the locking clip;

fig. 8 is an isometric view of the locating pin.

Detailed Description

The following detailed description of the embodiments of the present invention, such as the shapes, configurations, mutual positions and connection relationships of the components, the functions and operating principles of the components, the manufacturing processes and the operation and use methods thereof, will be further described in detail with reference to the accompanying drawings, so as to help those skilled in the art to more completely, accurately and deeply understand the concept and technical solutions of the present invention:

one embodiment of the invention is:

a locking device for a link mechanism comprises a first rotating shaft 1, a first rocker arm 2, a connecting rod 3, a second rocker arm 5, a second rotating shaft 4, a locking clamp 6 and a positioning pin 7, wherein the first rocker arm 2 and the second rocker arm 5 comprise fork ends and shaft hole ends, one end of the first rotating shaft 1 is fixedly connected to the shaft hole end of the first rocker arm 2, and one end of the second rotating shaft 4 is fixedly connected to the shaft hole end of the second rocker arm 5;

the fork ear end of the rocker arm I2 is provided with a group of positioning holes 1b, the fork ear end of the rocker arm II 5 is provided with a group of positioning holes 2b, two ends of the connecting rod 3 are provided with two mounting lugs, positioning holes c and positioning holes d are formed in the mounting lugs, and two sides of the locking clamp 6 are provided with a group of positioning holes 6a and a group of positioning holes 6 b; 3 one end locating hole c of connecting rod, 1b of the locating hole of rocking arm 2 and 6b of locking clamp are concentric to make rocking arm 2, connecting rod 3, locking clamp 6 connect through locating pin 7, locking clamp 6 sets up in rocking arm 2 fork ear end outsidely, and connecting rod 3 sets up inside rocking arm 2 fork ear end, 3 other end locating hole d of connecting rod, rocking arm two 5's locating hole 2b and locking clamp 6's locating hole 6a are concentric, and make rocking arm two 5, connecting rod 3, locking clamp 6 connect through locating pin 7, and locking clamp 6 even sets up in rocking arm two 5 fork ear end outsidely, and connecting rod 3 sets up inside rocking arm two 5 fork ear ends.

Further, the fork ear end of the first rocker arm 2 is further provided with a positioning hole 1a, the positioning hole 1a is concentric with a positioning hole 6a arranged on the locking clamp 6 outside the first rocker arm 2, a positioning pin 7 is also arranged on the positioning hole 1a and the positioning hole 6a, the locking clamp 6 is prevented from falling off from the first rocker arm 2, the fork ear end of the second rocker arm 5 is further provided with a positioning hole 2a, the positioning hole 2a is concentric with a positioning hole 6b arranged on the locking clamp 6 outside the second rocker arm 5, and the positioning hole 2a and the positioning hole 6b are also provided with a positioning pin 7, so that the locking clamp 6 is prevented from falling off from the second rocker arm 5.

Furthermore, the locking hoop 6 is of a structure like a Chinese character 'ji', the positioning hole 6a and the positioning hole 6b are respectively arranged on two sides of the locking hoop 6, the locking hoop 6 is made of beryllium bronze strip QBe2, the variety specification of the beryllium bronze strip is YS/T323-2002, the beryllium bronze strip QBe2 is high in flexibility, and the locking hoop can restore to the original state after bearing load.

Further, the positioning pin 7 is a cylindrical pin with two thin ends and a thick middle section, two ends of the positioning pin 7 are in clearance fit with the positioning hole 6a and the positioning hole 6b on the locking clamp 6, the middle section of the positioning pin 7 is in clearance fit with the positioning hole 1a and the positioning hole 1b on the rocker arm I2 and the positioning holes 2a and 2b on the rocker arm II 5, the positioning pin 7 is made of stainless steel 1Cr18Ni9Ti, surface treatment is passivation, and the three-proofing performance of the positioning pin 7 is enhanced.

Further, the shaft hole end interference of 1 one end of rotation axis and rocking arm 2 is connected, the shaft hole end interference of two 4 one ends of rotation axis and two 5 rocking arms is connected, is favorable to reducing spare part, and the transmission motion that the interference connection can be accurate, install on the operating mechanism body rotation axis 1 and rotation axis two 4, and rotation axis 1 is parallel to each other with rotation axis two 4, realizes the motion transmission of parallel axis.

The first rotating shaft 1 belongs to an active moving part, the first rocker arm 2 and the first rotating shaft 1 belong to a rigid fixed connection relation, when the first rotating shaft 1 rotates and displaces, the first rocker arm 2 rotates and displaces at the same time, two positioning holes are formed in the fork lug end of the first rocker arm 1, one positioning hole 1a is located at the front end of the fork lug, the other positioning hole 1b is located in the middle of the fork lug, a positioning pin 7 is used for connecting a lug positioning hole c of the connecting rod 3 with the positioning hole 1b of the first rocker arm 2, meanwhile, one positioning pin 7 is installed at the position 1a of the first rocker arm 2, the locking clamp 6 is installed on the first rocker arm 2, and meanwhile, the tail ends of the two positioning pins 7 are guaranteed to be. Through the fastening connection, the motion can be transmitted to the connecting rod 3, the lug positioning hole d of the connecting rod 3 is connected with the positioning hole 2b of the second rocker arm 5 through the positioning pin 7, meanwhile, the positioning pin 7 is installed at the position 2a of the second rocker arm 5, the locking clamp 6 is installed on the second rocker arm 5, the tail ends of the two positioning pins 7 are guaranteed to be installed in the two positioning holes of the locking clamp 6, the second rocker arm 5 and the second rotating shaft 4 belong to a rigid fixed connection relation, and therefore the rotating motion of the first rotating shaft 1 is transmitted to the second rotating shaft 4 parallel to the first rotating shaft through the fastening mode.

The working principle of the invention is as follows: the first rotating shaft 1 generates angular displacement to drive the first rocker arm 2 to rotate, the first rocker arm 2 is connected with the connecting rod 3 through the positioning pin 7, the locking clamp 6 installed on the first rocker arm 2 prevents the positioning pin 7 from generating axial movement, the other end of the connecting rod 3 is connected with the second rocker arm 5 through the positioning pin 7, meanwhile, the locking clamp 6 installed on the second rocker arm 5 prevents the positioning pin 7 from generating axial movement, the movement is transmitted to the second rotating shaft 4 through the rotation of the second rocker arm 5, and the movement transmission of the multistage connecting rod 3 and the fastening between the connecting rods 3 are realized.

The invention has been described above with reference to the accompanying drawings, it is obvious that the invention is not limited to the specific implementation in the above-described manner, and it is within the scope of the invention to apply the inventive concept and solution to other applications without substantial modification.