Long nut connecting piece

Abstract

The utility model provides a long nut connecting piece which comprises a long nut body. In the second embodiment, a blocking piece is arranged in the middle in the nut body, a central through hole of the blocking piece is connected with a bolt, and a hexagonal concave hole and a rubber annular friction plate are arranged on the end face of a bolt head, so that friction resistance between the nut and a rod body can be increased to prevent looseness. The outer side wall of the nut body is provided with two positioning holes which are located in the two sides of the blocking piece respectively and communicated with the interior of the blocking piece in the radial direction, and positioning pins are installed in the positioning holes to position and fix the rod body in the radial direction. When the nut is used, one rod body is in threaded connection with one end of the nut body and abuts against the blocking piece, a bolt is installed for auxiliary fixing, and then the other rod body is installed at the other end and abuts against the head of the bolt. According to the connecting piece, through the synergistic effect of threaded connection, the separation blade, the bolt, the positioning pin and the like, a multi-layer anti-loosening system is constructed, the problem that connection between the long rod body and the nut body is loosened is effectively solved, and the connection reliability and stability are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to hardware fastener technical field, concretely relates to a long nut connecting piece. BACKGROUND

[0002] In the field of mechanical connection, it is often necessary to reliably connect two long rods to ensure the stable operation of various mechanical equipment. At present, a common solution is to use a hexagonal long nut, which is connected to the two ends of the long rod by screwing, thereby realizing the fixation between the rods. This connection method can meet the basic connection requirements to some extent and is applied in many mechanical equipment such as construction equipment, industrial production line equipment, and some transportation tools.

[0003] However, in actual use, this connection method has the following problems, i.e. the connection part between the rod and the long nut is prone to looseness. Looseness of the connection will lead to a decrease in the stability of the entire connection structure, which may cause abnormal vibration and displacement between the parts during equipment operation, thereby affecting the normal operation accuracy of the equipment and reducing the service life of the equipment. TECHNICAL SOLUTION

[0004] In view of the problems pointed out in the background art, the utility model provides a long nut connecting piece to solve the above technical problems.

[0005] The technical solution of the utility model is as follows:

[0006] A long nut connecting piece, comprising a long nut body, a baffle is fixedly arranged at the middle position of the inside of the long nut body.

[0007] The utility model is further provided with a through hole on the baffle, and further comprises a bolt connected with the through hole.

[0008] The utility model is further provided with a hexagonal recess on the end face of the head of the bolt.

[0009] The utility model is further provided with an annular friction plate on the end face of the head of the bolt.

[0010] The utility model is further provided with a hexagonal recess on the end face of the head of the bolt.

[0011] The utility model is further provided with a positioning hole in communication with the inside of the long nut body on the outer side wall of the long nut body, the positioning hole is provided with two positioning holes and is located on the two sides of the baffle respectively, and a positioning pin is connected in the positioning hole.

[0012] The utility model is further provided with a hexagonal recess on the end face of the head of the bolt.

[0013] The utility model further provides for, the both sides of the baffle be equipped with the convex spine for increasing the friction.

[0014] The utility model further provides for, the center of baffle be equipped with through -hole, baffle is equipped with a plurality of split slot along its circumference interval, split slot with through -hole intercommunication setting.

[0015] Adopt above-mentioned technical scheme, the beneficial effect of the utility model is:

[0016] The long nut connecting piece provided by the utility model, when in use, first one rod body is threadedly connected with one end of the nut body, the rod body is connected with the baffle, then a bolt is installed at the other end of the nut body, the bolt is connected through the threaded hole on the baffle and the rod body, so that, on the basis of the threaded connection between the rod body and the nut body, an additional bolt structure is added to assist in fixing the rod body, after the bolt is tightened, another rod body is installed at the other end of the nut body, the rod body is abutted with the head of the bolt after being tightened, the abutment between the rod body and the bolt head forms a frictional resistance, which prevents the rotation of the rod body from loosening, so that, on the basis of the threaded connection between the rod body and the nut body, the loosening of the rod body is further prevented by the frictional resistance. Through the above technical scheme, the problem of loosening of the long rod body and the nut body connection is solved. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor.

[0018] Figure 1 It is a structural schematic view of the embodiment one of the utility model.

[0019] Figure 2 It is a sectional view of the embodiment one of the utility model.

[0020] Figure 3 It is a structural schematic view of the embodiment two of the utility model.

[0021] Figure 4 It is a sectional view of the embodiment two of the utility model.

[0022] Figure 5 It is a structural schematic view of the embodiment two and the rod body connection of the utility model.

[0023] Explanation of reference numerals in the drawings: nut body 1, baffle 2, through -hole 3, bolt 4, recess 5, friction plate 6, positioning hole 7, positioning pin 8, convex spine 9, split slot 10. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0025] The following references are made Figures 1-4 The utility model is described as follows:

[0026] Embodiment: a long nut connecting piece, including long nut body 1. Nut body 1 as the core basic component, it is long in configuration, its inside is equipped with the thread structure for being connected with the pole body, and it provides the basic carrier for the connection of two long pole bodies.

[0027] Embodiment one: the inside of nut body 1 is fixedly provided with a baffle 2 at the middle position.

[0028] By adopting the above technical scheme, when the pole body is screwed into the inside of nut body 1, the end of the pole body will abut against the baffle 2 with the advance of the screwing process. According to the mechanical principle, the contact force generated by the abutment surface of the baffle 2 and the pole body forms a resistance to prevent the pole body from loosening. This resistance cooperates with the friction force generated by the thread connection, and on the basis of the thread fastening connection, an additional constraint condition is increased to prevent the pole body from loosening, thereby effectively improving the stability of the connection and achieving the purpose of anti-loosening.

[0029] The baffle 2 is provided with a protrusion 9 on both sides for increasing resistance. The anti-loosening effect is further enhanced. When the pole body abuts against the baffle 2, under the action of contact pressure, the protrusion 9 can be pressed into the surface of the pole body, and at the same time, the protrusion 9 will also deform to a certain extent. This pressing and deformation forms a microstructure that is embedded with each other, significantly increasing the frictional resistance between the two. The ability to prevent the pole body from loosening is effectively improved, and the possibility of the pole body loosening is further reduced.

[0030] The baffle 2 is provided with a through hole 3 in the center, and a plurality of split grooves 10 are arranged on the baffle 2 along the circumferential direction and are in communication with the through hole 3. Due to the existence of the split grooves 10, the baffle 2 is divided into multiple parts, which can deform and dislocate under the extrusion action. This deformation and dislocation make the contact between the baffle 2 and the pole body more closely and irregularly, forming a complex contact interface, which greatly increases the contact resistance between the two. According to the contact mechanics theory in mechanics, the resistance generated by this complex contact interface further strengthens the resistance to the loosening of the pole body, thereby significantly improving the anti-loosening performance of the long nut connecting piece. Embodiment

[0031] The center of the baffle 2 is provided with a through hole 3, and further comprises a bolt 4 connected with the through hole 3. The bolt 4 is connected with the through hole 3, and one end thereof is matched with a threaded hole provided in advance on the rod body through threads.

[0032] A hexagonal recess 5 is provided on the end face of the head of the bolt 4. This is to facilitate the tightening operation by using a hexagonal wrench or the like tool. Through the engagement of the tool with the recess 5, a stable and effective force point can be provided, so as to realize the accurate tightening of the bolt 4 and ensure the fastening degree of the connection between the bolt 4 and the rod body.

[0033] An annular friction plate 6 is provided on the end face of the head of the bolt 4. The friction plate 6 is made of rubber material. The rubber material has good elasticity and a large friction coefficient. When the rod body is screwed into the nut body 1 and abuts against the head of the bolt 4, the friction plate 6 will be elastically deformed to a certain extent under the action of the contact pressure, so as to be closely attached to the surface of the rod body. According to the tribology principle, the large friction coefficient and the increased contact area between the friction plate 6 and the rod body significantly increase the friction resistance therebetween, so as to effectively prevent the rotation loosening of the rod body in the use process due to factors such as vibration and stress, and further improve the anti-loosening performance of the long nut connecting piece.

[0034] Positioning holes 7 are provided on the outer side wall of the nut body 1 along the radial direction thereof and are in communication with the inside thereof, and the positioning holes 7 are provided with two and are located on the two sides of the baffle 2 respectively, and a positioning pin 8 is connected in the positioning hole 7. The positioning pin 8 connected in the positioning hole 7 plays an additional positioning and fixing role. When the rod body is threadedly connected with the nut body 1 and abuts against the baffle 2, the positioning pin 8 is inserted into the positioning hole 7, and the positioning pin 8 will be matched with a specific part (such as a positioning groove provided on the rod body) of the rod body to constrain the rod body from the radial direction. This positioning mode can limit the radial displacement and rotation of the rod body in the nut body 1 based on the mechanical positioning principle, and further enhances the stability of the connection between the rod body and the nut body 1, thereby providing additional protection for preventing the loosening of the rod body on the basis of the existing threaded connection, baffle resistance and bolt auxiliary fixation.

[0035] The head of the bolt 4 is cylindrical, and the diameter thereof is equal to or smaller than the inner diameter of the nut body 1. This size design ensures that the bolt 4 can be smoothly installed inside the nut body 1, and meanwhile will not cause interference to the screwing of the other rod body.

[0036] In actual use, first, one rod body is threadedly connected with one end of the nut body 1 until the rod body abuts against the stop piece 2, at this time, the stop piece 2 provides a preliminary anti-loosening resistance; then, the bolt 4 is installed at the other end of the nut body 1, the bolt 4 passes through the through hole 3 of the stop piece 2 and is connected with the threaded hole on the rod body, the auxiliary fixation of the rod body is realized by tightening the bolt 4; then, another rod body is installed at the other end of the nut body 1, after being tightened, the rod body abuts against the head of the bolt 4, at this time, the friction piece 6 plays a role, the friction resistance is generated to prevent the rod body from rotating and loosening. Through the synergistic effect of various structures such as threaded connection, stop piece resistance, bolt auxiliary fixation and positioning pin positioning, a multi-level and multi-dimensional anti-loosening system is formed, the problem that the long rod body is prone to loosening when being connected with the nut body 1 is effectively solved, and the connection reliability and stability of the long nut connecting piece are significantly improved.

[0037] The above only describes the preferred embodiments of the utility model and is not used to limit the utility model, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A long nut connector, comprising an elongated nut body, characterized in that: A baffle plate is fixedly provided at the middle position inside the nut body.

2. The long nut connector according to claim 1, characterized in that: The baffle plate is provided with a through hole and also includes a bolt connected to the through hole.

3. A long nut connector according to claim 2, characterized in that: The bolt has a hexagonal recess on the end face of the screw head.

4. A long nut connector according to claim 2, characterized in that: The bolt head has an annular friction plate on its end face.

5. A long nut connector according to claim 4, characterized in that: The friction pad is made of rubber material.

6. A long nut connector according to claim 2, characterized in that: The outer wall of the nut body is provided with a positioning hole communicating with its interior. There are two positioning holes, which are located on both sides of the baffle respectively. A positioning pin is connected inside the positioning hole.

7. A long nut connector according to claim 2, characterized in that: The bolt head is cylindrical, and its diameter is equal to or smaller than the inner diameter of the nut body.

8. A long nut connector according to claim 1, characterized in that: The baffle has protrusions on both sides to increase friction.

9. A long nut connector according to claim 8, characterized in that: The baffle has a through hole at its center and multiple dividing grooves are spaced apart along its circumference. The dividing grooves are connected to the through hole.

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