Plug-in sleeve type connecting joint

Abstract

The utility model provides a plug-in sleeve type connection node, and mainly relates to the technical field of composite material truss connection nodes. The plug-in sleeve type connecting node comprises a main rod arm, a connecting rod arm and a connecting sleeve, the connecting rod arm is installed in the main rod arm in a plug-in mode, the connecting sleeve is installed at the connecting position of the main rod arm and the connecting rod arm, and reinforcing pieces are fixedly installed on the two sides of the connecting sleeve. A connecting opening is formed in the side, provided with the connecting rod arm, of the main rod arm, and bolt mounting openings are formed in the back side, provided with the connecting rod arm, of the main rod arm and in the two sides of the connecting opening correspondingly. And a connecting end is arranged at the end part of the connecting rod arm and is matched with the connecting port. The composite material truss connecting node has the advantages that the structural strength and the bearing capacity of the composite material truss connecting node can be effectively improved through the brand new structural design, and it is guaranteed that the connecting node has high reliability and stability.

Description

TECHNICAL FIELD

[0001] The utility model mainly relates to the technical field of composite material truss connecting joint, specifically a kind of plug-in sleeve type connecting joint. BACKGROUND

[0002] In recent years, as a new type of structural material, composite material is widely used in various fields with the unique advantages of high specific strength, high specific modulus and material performance designability. Truss structure is a very effective structure form in airships, space stations, satellites and antenna covers, antenna support systems. Because of its simple structure, reasonable load distribution, easy installation and disassembly, it has a wide application prospect. Compared with traditional metal truss structure, the self-weight of composite material truss structure is significantly reduced, and it has obvious advantages in replacing metal materials for truss structure. Because the development time of composite material technology is short, the technology is not mature, and more experience needs to be accumulated for the design and manufacture of composite material truss.

[0003] The shape of truss connecting joint is relatively diverse, and most of them are spatial multi-directional components. The connecting joints in early truss structures are mostly made of metal materials, and the proportion of aluminum alloy and carbon steel alloy is relatively large. With the development of composite material forming process technology, the trend of replacing metal materials with composite material connecting joints has gradually emerged in special fields.

[0004] Traditional composite material truss is composed of pre-prepared composite material pipes and metal nodes bonded together. The truss assembled by this form has a small increase in self-weight reduction, about 20%-30% reduction. On the other hand, this design form is prone to damage at the connecting joint position. According to statistics, more than 70% of the damage occurs at this position. Because the design of composite material truss structure in actual engineering construction is usually controlled by overall deformation, the stress level is relatively low, so the strength safety reserve of the rod is large. If the bearing capacity of the node is insufficient, the strength reserve of the structure is difficult to fully play, which is not safe and economical. Therefore, when designing composite material truss structure, special attention should be paid to the design of the joint part to avoid node failure problems. In the case of reducing the overall weight, the bearing efficiency and reliability are improved. The bearing capacity of the existing composite material truss connecting joint needs to be further improved to ensure the overall structural strength of the truss and improve the service life of the composite material truss. UTILITY MODEL CONTENTS

[0005] To solve the problems of the prior art, the utility model provides a plug-in sleeve type connecting joint, which can effectively improve the structural strength and bearing capacity of the composite material truss connecting joint through a new structure design, and ensure that the connecting joint has high reliability and stability.

[0006] To achieve the above purpose, the utility model realizes the following technical scheme:

[0007] A plug-in sleeve type connecting node, comprising a main rod arm, a connecting rod arm, a connecting sleeve, the connecting rod arm is plug-in installed in the main rod arm, the connecting sleeve is installed at the connection of the main rod arm and the connecting rod arm, and reinforcing members are fixedly installed on both sides of the connecting sleeve;

[0008] A connecting port is formed on one side of the main rod arm where the connecting rod arm is installed, bolt mounting ports are respectively formed on the back side of the main rod arm where the connecting rod arm is installed and on both sides of the connecting port;

[0009] A connecting end is arranged at the end of the connecting rod arm, and the connecting end is matched with the connecting port;

[0010] The connecting sleeve is T-shaped as a whole and is composed of two completely symmetrical parts, and the two connecting sleeves are abutted and sleeved on the connection of the main rod arm and the connecting rod arm;

[0011] The reinforcing member is provided with a reinforcing rib in the middle.

[0012] A bolt hole group one is formed on the main rod arm in the axial direction in the connecting port, bolt hole group twos are respectively formed on the two bolt mounting ports of the main rod arm away from each other, and bolt hole group threes are formed on both sides of the main rod arm.

[0013] A bolt hole group four is formed on the connecting end, a bolt through hole is formed on the connecting end, and a bolt hole group five and a bolt hole group six are respectively formed on the connecting rod arm.

[0014] A bolt hole group seven, a bolt hole group eight and a bolt hole group nine are formed on the connecting sleeve.

[0015] A bolt hole group ten and a bolt hole group eleven are formed on the reinforcing member.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The utility model can effectively improve the structural strength and bearing capacity of the composite material truss connecting node through the structure design that the connecting rod arm is inserted into the main rod arm and fixed by bolts and cooperated with the connecting sleeve and the reinforcing member, so that the connecting node has high reliability and stability. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is the first perspective view of the whole structure of the utility model;

[0019] Figure 2 is the second perspective view of the whole structure of the utility model;

[0020] Figure 3 is the first perspective view of the structure of the utility model after decomposition;

[0021] Figure 4 is the second view angle structure schematic diagram after the decomposition of the utility model.

[0022] The labels shown in the drawings: 1, main rod arm; 2, connecting rod arm; 3, connecting sleeve; 4, reinforcing member; 11, connecting port; 12, bolt mounting port; 21, connecting end; 40, reinforcing rib; 50, bolt through hole; 51, bolt hole group one; 52, bolt hole group two; 53, bolt hole group three; 54, bolt hole group four; 55, bolt hole group five; 56, bolt hole group six; 57, bolt hole group seven; 58, bolt hole group eight; 59, bolt hole group nine; 60, bolt hole group ten; 61, bolt hole group eleven. DETAILED DESCRIPTION

[0023] The utility model is further explained in combination with the drawings and specific embodiments. It should be understood that these embodiments are only for illustrating the utility model and are not used for limiting the scope of the utility model. In addition, it should be understood that after reading the content taught by the utility model, those skilled in the art can make various alterations or modifications to the utility model, and these equivalent forms also fall within the scope defined by the present application.

[0024] In combination with the drawings Figures 1-4 A plug-in sleeve type connecting node, including main rod arm 1, connecting rod arm 2, connecting sleeve 3, connecting rod arm 2 is installed in main rod arm 1 in plug-in mode, connecting sleeve 3 is installed at the joint of main rod arm 1 and connecting rod arm 2, and reinforcing member 4 is fixedly installed on both sides of connecting sleeve 3.

[0025] The side of main rod arm 1 where connecting rod arm 2 is installed is provided with connecting port 11, and bolt mounting port 12 is provided on the back side of main rod arm 1 and on both sides of connecting port 11.

[0026] Connecting end 21 is provided at the end of connecting rod arm 2, and connecting end 21 is matched with connecting port 11.

[0027] Connecting sleeve 3 is T-shaped as a whole, and is composed of two completely symmetrical parts, and the two connecting sleeve 3s are butt-jointed and sleeved on the joint of main rod arm 1 and connecting rod arm 2.

[0028] Reinforcing rib 40 is arranged in the middle of reinforcing member 4.

[0029] Bolt hole group one 51 is arranged on the axis of main rod arm 1 in connecting port 11, bolt hole group two 52 is arranged on the side of main rod arm 1 away from the other bolt mounting port 12, and bolt hole group three 53 is arranged on both sides of main rod arm 1. Bolt hole group three 53 is staggered with bolt hole group two 52 and bolt hole group one 51 in the axial direction of main rod arm 1.

[0030] The connecting end 21 has a bolt hole group four 54 and a bolt through hole 50. The connecting rod arm 2 has a bolt hole group five 55 and a bolt hole group six 56 respectively. The bolt through hole 50 is located axially offset from the bolt hole group four 54 of the connecting rod arm 2.

[0031] The connecting sleeve 3 has bolt hole group seven 57, bolt hole group eight 58, and bolt hole group nine 59.

[0032] The reinforcing member 4 has bolt hole group 60 and bolt hole group 61.

[0033] In use, the bolt hole group four 54 is adapted to the bolt hole group one 51. After the connecting end 21 of the connecting rod arm 2 is inserted into the connecting port 11 of the main rod arm 1, the fixing bolts are installed into the bolt hole group four 54 and the bolt hole group one 51 through the bolt mounting port 12. After the connecting rod arm 2 is installed, the two connecting sleeves 3 are joined together and fitted onto the connection between the main rod arm 1 and the connecting rod arm 2. The bolt hole group nine 59 and the bolt hole group three 53 are adapted to each other. A set of fixing bolts is inserted into the bolt hole group nine 59 and the bolt hole group three 53 to fix the connecting sleeve 3. The reinforcing member 4 is placed. On both sides of the connecting sleeve 3, the bolt hole group 10 60 of the reinforcing member 4, the bolt hole group 8 58 of the connecting sleeve 3, and the bolt hole group 2 52 of the main rod arm 1 are matched. A set of fixing bolts is installed in the bolt hole group 10 60, the bolt hole group 8 58, and the bolt hole group 2 52 to fix the components. The bolt hole group 11 61 of the reinforcing member 4 is matched with the bolt hole group 55 of the connecting rod arm 2. A set of fixing bolts is further installed in the bolt hole group 11 61 and the bolt hole group 55. Finally, the connecting sleeve 3 and the connecting rod arm 2 are fixed by inserting bolts through the bolt hole group 6 56.

[0034] This solution uses multiple bolt specifications. Bolt hole group 1 51 and bolt hole group 4 54 use M1 bolts; bolt hole group 2 52, bolt hole group 55, bolt hole group 7 57, bolt hole group 8 58, bolt hole group 10 60 and bolt hole group 11 61 use M2 bolts; bolt hole group 9 59, bolt through hole 50, bolt hole group 6 56 and bolt hole group 3 53 use M3 bolts; the bolt diameter is M3>M2>M1.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A spigot sleeve connection node comprising a main bar arm (1), a connecting bar arm (2), a connecting sleeve (3), characterized in that: The connecting rod arm (2) is inserted into the main rod arm (1), the main rod arm (1) is provided with a connecting sleeve (3) at the connecting position with the connecting rod arm (2), and the connecting sleeve (3) is fixedly provided with a reinforcing part (4) on both sides; The main rod arm (1) is provided with a connecting port (11) on one side of the connecting rod arm (2), and the main rod arm (1) is provided with a bolt mounting port (12) on the back side of the connecting rod arm (2) and on both sides of the connecting port (11); The connecting end (21) is provided at the end of the connecting rod arm (2), and the connecting end (21) is matched with the connecting port (11); The connecting sleeve (3) is T-shaped as a whole, and the connecting sleeve (3) is composed of two completely symmetrical parts, and the two connecting sleeves (3) are abutted and sleeved at the connecting position of the main rod arm (1) and the connecting rod arm (2); The reinforcing part (4) is provided with a reinforcing rib (40) in the middle.

2. A plug-in sleeve type connection node according to claim 1, characterized in that: A bolt hole group one (51) is formed in the main rod arm (1) in the axial direction in the connecting port (11), bolt hole group two (52) is formed on both sides of the two bolt mounting ports (12) of the main rod arm (1) away from each other, and bolt hole group three (53) is formed on both sides of the main rod arm (1).

3. A plug-in sleeve type connection node according to claim 1, characterized in that: A bolt hole group four (54) is formed on the connecting end (21), a bolt through hole (50) is formed on the connecting end (21), and bolt hole group five (55) and bolt hole group six (56) are formed on the connecting rod arm (2).

4. A plug-in sleeve type connection node according to claim 1, characterized in that: A bolt hole group seven (57), a bolt hole group eight (58) and a bolt hole group nine (59) are formed on the connecting sleeve (3).

5. A plug-in sleeve type connection node according to claim 1, characterized in that: A bolt hole group ten (60) and a bolt hole group eleven (61) are formed on the reinforcing part (4).

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