CN113788164B - Space truss connecting device with bidirectional locking function - Google Patents

Abstract

The invention discloses a bidirectional-locking space truss connecting device which comprises a shell, a rotating mechanism and a transmission mechanism, wherein the shell comprises an elastic tenon, a tenon connecting section, a sliding chute, a connecting plate, an opening, a rack groove, a small hole and a semicircular groove, the rotating mechanism comprises a guide rod, a connecting rod, a spring and a crank, and the transmission mechanism comprises a rack, a rotating block and a set screw. The connecting device can simultaneously complete the bidirectional locking of different connected parts at two ends, one end can be connected with the ball head through the tenon, and the other end is connected with the truss rod through the axial joint.

Description

A two-way locking space truss connection device

technical field

The invention belongs to the technical field of truss structures, and in particular relates to a two-way locking space truss connection device.

Background technique

With the vigorous development of aerospace technology and the further increase of human demand for the exploration and development of space resources, the scale of corresponding large-scale space structures, the magnitude of on-orbit operations, and the complexity of tasks have also increased dramatically. Since large space facilities are difficult to launch at one time, they need to be launched in separate modules and then assembled on-orbit, so there will be problems such as corresponding on-orbit assembly.

At present, the most widely used space assembly methods include astronaut extravehicular assembly and robotic arm assembly. Due to the special environment of space, the on-orbit assembly task will pose a great threat to the safety of astronauts. Therefore, a simple and efficient truss structure is urgently needed to reduce assembly time, improve assembly efficiency, and ensure assembly safety.

SUMMARY OF THE INVENTION

In view of this, the present invention provides a two-way locking space truss connection device, which aims to solve the above shortcomings.

In order to solve the above technical problems, the present invention proposes a bidirectional locking space truss connection device, which is characterized in that the bidirectional locking space truss connection device includes: a shell, a rotating mechanism, and a transmission mechanism; the space truss One end of the connecting device can be connected to the ball head through an elastic tenon. The surface of the ball head is provided with stepped tenon holes evenly distributed. Similarly, the other end is connected to the truss rod through an axial joint, one end of the axial joint is installed with a semi-circular boss, the boss has a pin hole with the same diameter as the pin, and the other end of the axial joint is a threaded hole.

Preferably, the casing includes an elastic tenon, tenon connecting section, chute, connecting plate, opening, rack groove, small hole, and semicircular groove; one end of the casing is an elastic tenon, and the other end is a semicircle a ring groove, a rotating shaft is mounted on the connecting plate, and an opening is formed at the part of the connecting plate in contact with the outer ring of the casing, the opening is used to limit the rotation angle of the crank, and its width is the same as the width of the crank The other side of the casing opposite to the opening is a rack groove, the outer ring of the casing is provided with a small hole on the side close to the semi-circular groove, and the side of the semi-circular groove is provided with a thin baffle.

Preferably, the rotating mechanism includes a guide rod, a connecting rod, a spring, and a crank; the outer diameter of the guide rod is the same as the inner diameter of the tenon connecting section, and one end side of the guide rod is connected with the connecting rod through a hinge, The bottom surface is in contact with the spring, the spring is installed in the chute, and one end is fixed on the connecting plate, and the other end of the connecting rod is connected with the crank through the hinge, and the crank can drive the guide rod to move in the chute through the connecting rod. Compress or release the spring, the crank includes a crank handle, a hinge slot, a shaft hole, and a gear. The shaft hole is matched with the rotating shaft on the connecting plate. By turning the crank handle, the crank rotates around the rotating shaft at a certain angle so that the top end The gear rotates a certain angle around the axis of rotation.

Preferably, the transmission mechanism includes a rack, a rotating block, and a set screw; grooves of the same size as the rack grooves are provided on both sides of the rack, and are installed on the housing through the clamping grooves, and the The rack is meshed with the gear on the crank, one end of the rotating block is an annular groove, one end of the rack is embedded in the annular groove, and the other end of the rotating block is a pin with a smaller diameter, the pin can be inserted The circumferential fixing is completed in the pin hole of the axial joint to prevent rotation. The outer surface of the rotating block is provided with a curved groove, and a set screw is installed in the curved groove to slide in the curved groove.

The present invention has achieved the following technical effects with respect to the prior art:

1. The connecting device can simultaneously complete the two-way locking of different connected parts at both ends.

2. The connecting device has strong versatility. Both ends of the connecting device can connect different types of ball heads and truss rods of different sizes. It only needs to ensure that the tenon holes of different ball heads are the same size, and the diameter of the threaded hole of the radial joint can also be Varies according to different sizes of trusses.

3. The connection method is simple and efficient, and the connection rigidity can be guaranteed to avoid falling off.

4. The assembly process is simple, and there is no need to use many installation and fixing methods. The installation and disassembly can be realized by manually turning the crank, which is very suitable for the truss assembly work in the microgravity of space.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that are used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative efforts.

Figure 1 is a schematic structural diagram of a space truss connection device;

Figure 2 is a cross-sectional structural diagram of the shell;

Figure 3 is a three-dimensional schematic diagram of a crank;

Figure 4 is a three-dimensional schematic diagram of a rack;

5 is a three-dimensional schematic diagram of a rotating block;

Figure 6 is a schematic diagram of the axial joint structure;

Figure 7 is a schematic view of the ball head structure;

Figure 8 is a schematic diagram of ball head assembly;

9 is a schematic diagram of the assembly of the space truss module;

In the drawings: 1. Housing; 11. Elastic tenon; 12. Tenon connecting section; 13. Chute; 14. Connecting plate; 15. Rotating shaft; 16. Opening; 17. Rack slot; ; 19, semi-circular groove; 2, rotating mechanism; 21, guide rod; 22, connecting rod; 23, spring; 24, crank; 241, crank handle; 242, hinge groove; 243, shaft hole; 244, Gear; 3, Transmission mechanism; 31, Rack; 311, Groove; 32, Rotating block; 321, Annular groove; 322, Curved groove; 323, Latch; 33, Set screw; 4, Ball head; Hole; 5. Axial joint; 51. Half-circle boss; 52. Pin hole; 53. Threaded hole; 6. Truss rod.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Example

1-7, the present invention discloses a two-way locking space truss connection device, including: a shell 1, a rotating mechanism 2, a transmission mechanism 3; one end of the space truss connection device can be connected to a ball head 4 through an elastic tenon 11 , the surface of the ball head is provided with evenly distributed stepped tenon holes 41, the large diameter of the stepped tenon hole 42 is the same as the outer diameter of the elastic tenon 22, the small diameter is the same as the outer diameter of the tenon connecting section 12, and the other end is connected by the axial joint 5 In the truss rod 6, one end of the axial joint 5 is installed with a semi-circular boss 51, the semi-circular boss 51 has a pin hole 52 with the same diameter as the plug 323, and the other end of the axial joint 5 is a threaded hole 53.

The housing 1 includes an elastic tenon 11, a tenon connecting section 12, a chute 13, a connecting plate 14, a rotating shaft 15, an opening 16, a rack groove 17, a small hole 18, and a semi-circular groove 19; one end of the housing 1 is elastic The tenon 11 has a semi-circular groove 19 at the other end, a rotating shaft 15 is installed on the connecting plate 14, and an opening 16 is formed at the part of the connecting plate 14 in contact with the outer ring of the housing 1, and the opening is used to limit the rotation angle of the crank 24, And its width is the same as the width of the crank 24, the other side of the housing opposite to the opening 16 is the rack groove 17, the outer ring of the housing 1 is provided with a small hole 18 on the side close to the semi-circular groove 19, and the semi-circular concave There is a thin baffle on one side of the groove 19.

The rotating mechanism 2 includes a guide rod 21, a connecting rod 22, a spring 23, and a crank 24; the outer diameter of the guide rod 21 is the same as the inner diameter of the tenon connecting section 12, and one side of the guide rod 21 is connected with the connecting rod 22 through a hinge, and the bottom surface is connected to the connecting rod 22 through a hinge. The spring 23 contacts, the spring is installed in the chute 13, and one end is fixed on the connecting plate 14, the other end of the connecting rod 22 is connected with the crank 24 through a hinge, and the crank 24 can drive the guide rod 21 to move in the chute 13 through the connecting rod 22 Thereby, the spring 23 is compressed or released, and the crank 24 includes a crank handle 241, a hinge groove 242, an axial hole 243, and a gear 244. The axial hole 243 is matched with the rotating shaft 15 on the connecting plate 14, and the crank handle 241 is rotated to make the crank 24 go around. The rotating shaft 15 rotates at a certain angle so that the top gear 244 rotates around the rotating shaft 15 at a certain angle.

The transmission mechanism 3 includes a rack 31, a rotating block 32, and a set screw 33; the two sides of the rack 31 are provided with grooves 311 of the same size as the rack groove 17, and are installed on the casing 1 through the card groove. The bar 31 meshes with the gear 244 on the crank 24. One end of the rotating block 32 is an annular groove 321. The pin hole 52 of the axial joint 5 is circumferentially fixed to prevent rotation. The outer surface of the rotating block 32 is provided with a curved groove 322, and a set screw 33 is installed in the curved groove 322 to slide in the groove.

The concrete working process of the present invention is as follows:

When the space truss is assembled, the crank handle 241 is toggled to make the crank 24 rotate at a certain angle around the rotation axis 15. One end of the crank 24 drives the guide rod 21 to move horizontally in the chute 13 through the connecting rod 22. At this time, the guide rod 21 is disconnected from the tenon connection. The segment 12 enters the chute 13, the spring 23 is squeezed, and at the same time, the other end of the crank 24 is driven by the gear 244 to move the rack 31 engaged with it to the leftmost end, because one end of the rack 31 is embedded in the annular groove 321. At the same time, it is restricted by the set screw 33, so that the horizontal movement of the rack 31 drives the rotating block 32 to move in the horizontal direction and rotate in the direction of the annular groove. 1, the joint assembly can be performed. Since the tenon connecting section 12 is an elastic material, the elastic tenon 11 can be inserted into the tenon hole 41 of the ball head 4, and the axial joint 5 can be inserted into the other end. Connect the device housing 1 and rotate 180 degrees to contact with the thin baffle to complete the assembly work.

After the joint assembly is completed, loosen the crank 24, the guide rod 21 will spring back to the tenon connecting section 12 due to the elastic force of the spring 23, see the position shown in FIG. The rod 21 enters the elastic connecting section 12 under the thrust of the spring 23, which ensures the safety of the connection between the housing 1 and the ball head 4 and improves the connection rigidity. The plug 323 can rotate and move toward the end close to the radial joint 5, and enter the insertion hole 52 of the radial joint 5 to complete the circumferential fixation and prevent rotation. The semi-circular boss 51 ensures the connection of the connecting device in the axial direction. Reliability, the plug 323 ensures the reliability of the circumferential connection of the connecting device.

Finally, a plurality of joint assemblies are connected by truss rods 6 to form a complete space truss module, see FIG. 9 .

The above are only preferred embodiments of the present invention, and do not limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention are still within the scope of the present invention. within the scope of the technical solution of the present invention.

Claims (2)

1. A bi-directionally locking space truss attachment apparatus, comprising: the space truss connecting device comprises a shell, a rotating mechanism and a transmission mechanism, wherein one end of the space truss connecting device can be connected with a ball head through an elastic tenon, the surface of the ball head is provided with step-shaped tenon holes which are uniformly distributed, the major diameter of each step-shaped tenon hole is the same as the outer diameter of the elastic tenon, the minor diameter of each step-shaped tenon hole is the same as the outer diameter of a tenon connecting section, the other end of each step-shaped tenon hole is connected with a truss rod through an axial joint, one end of each axial joint is provided with a semicircular boss, each boss is provided with a pin hole with the same diameter as a pin, and the other end of each axial joint is a threaded hole;

the rotating mechanism comprises a guide rod, a connecting rod, a spring and a crank, the outer diameter of the guide rod is the same as the inner diameter of the tenon connecting section, one end of the guide rod is connected with the connecting rod through a hinge, the bottom surface of the guide rod is in contact with the spring, the spring is installed in the chute, one end of the spring is fixed on the connecting plate, the other end of the connecting rod is connected with the crank through a hinge, the crank can drive the guide rod to move in the chute through the connecting rod so as to compress or release the spring, the crank comprises a crank handle, a hinge groove, a shaft center hole and a gear, the shaft center hole is matched with a rotating shaft on the connecting plate, and the crank is rotated for a certain angle around the rotating shaft by rotating the crank handle so as to rotate the gear at the top end for a certain angle around the rotating shaft;

drive mechanism includes rack, turning block, holding screw, the recess the same with rack groove size is seted up to the rack both sides, and installs through the draw-in groove on the casing, the rack with epaxial gear mesh mutually, turning block one end is the ring channel, rack one end is inlayed in the ring channel, the turning block other end is the less bolt of diameter, the bolt can be inserted and accomplish circumference fixed in axial joint's the pinhole, prevents to rotate, the curved surface groove has been seted up to the turning block surface, the holding screw is installed to the curved surface inslot and can be slided in the curved surface inslot.

2. The space truss connecting device with the bidirectional locking function as claimed in claim 1, wherein the housing comprises an elastic tenon, a tenon connecting section, a sliding groove, a connecting plate, an opening, a rack groove, a small hole and a semicircular groove, one end of the housing is the elastic tenon, the other end of the housing is the semicircular groove, a rotating shaft is mounted on the connecting plate, the connecting plate is provided with the opening in contact with the outer ring of the housing, the opening is used for limiting the rotation angle of the crank and has the width the same as that of the crank, the other side of the housing opposite to the opening is the rack groove, the outer ring of the housing is provided with the small hole on one side close to the semicircular groove, and a thin baffle is arranged on one side of the semicircular groove.

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