A bundle joint structure based on an integral rubber ring and a preparation method thereof

Abstract

The present invention discloses a bundle joint structure based on an integral rubber ring and a preparation method thereof, which belongs to the technical field of bamboo composite pipe connection, wherein the corresponding setting of the integral rubber ring can effectively avoid the setting of the inner lining layer in the bundle joint structure, simplify the preparation process of the bundle joint structure, and avoid the risk of leakage, and through the corresponding setting of the connecting groove, the port stop and the bamboo strip layer at the upper end of the outer periphery of the integral rubber ring, a reliable reinforcement layer can be formed on the outer periphery of the integral rubber ring, and then a bundle joint structure with strong integrity and good sealing is obtained. The bundle joint structure of the present invention has a simple structure and a convenient preparation method, which can effectively simplify the preparation process of the bundle joint structure, improve the preparation efficiency, and reduce the preparation cost, and the bundle joint structure has high strength and good sealing, which can effectively ensure the strength and sealing of the bamboo composite pipe connection structure, extend the service life of the bamboo composite pipe connection structure, and reduce the application cost and maintenance cost of the bamboo composite pipe, and has good practical value and promotion value.

Description

Technical Field

[0001] The invention belongs to the technical field of bamboo composite pipe connection, and particularly relates to a bundle joint structure based on an integral rubber ring and a preparation method thereof. Background Art

[0002] In people's daily life and industrial production, pipes are widely used. Common pipe connection methods include threaded connection, flange connection, welding, pipe socket connection, ferrule connection, hot melt connection and groove connection. These connection methods are widely used in various pipeline projects in many fields. However, for bamboo composite pipes, bamboo is used as the main raw material. Due to the particularity of bamboo, the existing interface connection method cannot be effectively applied.

[0003] In view of this, in the applicant's prior application CN 104266017A, a preparation method, an installation method and the tube bundle section for connecting bamboo composite pipes are proposed. Through the specially designed tube bundle section structure, the connection of bamboo composite pipes can be effectively achieved, which meets the connection requirements of bamboo composite pipes to a certain extent. However, the applicant found that the above-mentioned bundle section has the defects of stress concentration and poor molding quality when used. Therefore, in the subsequent patent CN 110375134 A, the connection structure of bamboo composite pipes was improved accordingly, and the sealing ring was changed to the end of the connecting pipe, which avoided the stress concentration at the position of the sealing ring of the bundle section to a certain extent, and improved the setting stability of the connection structure of bamboo composite pipes.

[0004] However, with the further development of bamboo composite pipe connection technology, the applicant has found that the existing technology of slotting the spigot or bundle and embedding the sealing ring also has obvious defects. First, the preparation process of the above-mentioned bundle or bamboo composite pipe connection structure is cumbersome, and the manufacturing and use costs of the product are high, which is not conducive to the large-scale promotion of bamboo composite pipes and limits the promotion and application of bamboo composite pipes; secondly, during the installation of the bundle, the bundle and the spigot of the pipe are very likely to damage the inner lining of the bundle when they come into contact, affecting the normal use of the bundle, causing the risk of leakage in the connected structure, and increasing maintenance costs. Summary of the invention

[0005] In response to one or more of the above defects or improvement needs in the prior art, the present invention provides a bundle joint structure based on an integral rubber ring and a preparation method thereof, wherein the corresponding setting of the integral rubber ring effectively avoids the setting of the inner lining layer in the traditional bundle joint structure, simplifies the setting process of the bundle joint structure, and avoids the risk of leakage of the bundle joint structure. The corresponding setting of the connecting groove and the corresponding matching of the reinforcing layer and the integral rubber ring effectively ensure the integrity and strength of the bundle joint structure, and improve the reliability and stability of the bamboo composite pipe connection structure.

[0006] To achieve the above object, one aspect of the present invention provides a beam segment structure based on an integral rubber ring, characterized in that it includes an integral rubber ring and a reinforcement layer sequentially arranged from the inside to the outside in the radial direction;

[0007] The integral rubber ring comprises a body in a tubular structure, an inner wall surface of the body is provided with an internal stopper in the circumferential direction, and the internal stopper is provided with at least one spur on both sides along the axial direction of the bundle segment structure;

[0008] The spur is an annular structure arranged along the inner circumference of the body, the outermost side of which is closely connected to the inner circumferential wall of the body, and the inner end of the spur is offset to the side of the inner stop; the outer circumferential wall surfaces at both ends of the body are respectively provided with end connection grooves along the circumferential direction;

[0009] The reinforcing layer is wound and bonded on the outer peripheral wall surface of the main body, and includes a bamboo strip layer and a port stopper; the port stopper is two respectively arranged on the outer peripheral wall surfaces at both ends of the main body, and the two port stops respectively cover the corresponding end connecting grooves, and annular convex rings are respectively formed on the inner peripheral wall surfaces of the two port stops, and the annular convex rings are embedded in the corresponding end connecting grooves; the bamboo strip layer is arranged on the outer peripheral wall surface of the main body between the two port stops, and its two ends respectively abut against the corresponding port stops.

[0010] As a further improvement of the present invention, at least one middle connecting groove is provided on the outer peripheral wall surface of the body between the two port baffles;

[0011] A slot-filling ring is embedded in the middle connecting slot. The slot-filling ring is formed by winding and bonding glass fiber material, and its outer peripheral wall surface is tightly attached to and bonded to the inner peripheral wall surface of the bamboo strip layer.

[0012] As a further improvement of the present invention, the outer peripheral wall surface of the slot filling ring protrudes from the outer peripheral wall surface of the body, and the portion of the slot filling ring protruding from the outer peripheral wall surface of the body extends to both sides of the opening of the middle connecting groove with a certain width.

[0013] As a further improvement of the present invention, the radial distance between the outer peripheral wall surface of the slot filling ring and the outer peripheral wall surface of the body decreases from the middle to both sides.

[0014] As a further improvement of the present invention, the bamboo strips layer is formed by alternately winding and bonding circumferential bamboo strips and axial bamboo strips in radial direction.

[0015] As a further improvement of the present invention, the innermost and outermost sides of the bamboo strips layer are respectively formed by winding and bonding circumferential bamboo strips, and the total winding thickness of the circumferential bamboo strips is not less than the total winding thickness of the axial bamboo strips.

[0016] As a further improvement of the present invention, the number of the protrusions on both sides of the inner baffle is at least two.

[0017] As a further improvement of the present invention, the outer peripheral wall surface of the slot filling ring protrudes from the slot opening of the connecting slot and extends to both axial sides of the slot opening by a certain length.

[0018] As a further improvement of the present invention, flanges are respectively provided at both ends of the body; the two flanges are obtained by extending the two ends of the body radially outward for a certain length and then extending axially toward each other for a certain length, and the axial extension length of the flanges is less than the axial length of the port stop.

[0019] As a further improvement of the present invention, the opening width of the connecting groove is smaller than the maximum value of the axial width of the connecting groove.

[0020] As a further improvement of the present invention, the cross section of the connecting groove is trapezoidal, and the width of its opening is equal to the length of the shorter side of the two parallel sides of the trapezoid.

[0021] As a further improvement of the present invention, the axial thickness of each position of the spur decreases as the diameter decreases.

[0022] Another aspect of the present invention provides a method for preparing a bundle segment structure, which is used for preparing the bundle segment structure based on the integral rubber ring, and the steps are as follows:

[0023] (1) forming an integral rubber ring for standby use, so that an inner stop and a spur are provided on the inner side of the integral rubber ring, and end connection grooves are respectively provided on the outer peripheral wall surfaces at both ends of the integral rubber ring;

[0024] (2) The integral rubber ring is mounted on a special mold, and the material for forming the port stopper is respectively wound and bonded in the two end connection grooves, and after the end connection grooves are filled, the port stopper is continuously formed on the outer peripheral wall surface of the body outside the end connection grooves by winding and bonding;

[0025] (3) wrapping and bonding bamboo strips material on the outer peripheral wall surface of the body between the two port baffles to form bamboo strips layers with two ends respectively abutting against the side walls of the port baffles;

[0026] When a middle connecting groove is provided on the outer peripheral wall surface of the body between the two end stops, before winding and bonding the bamboo strips layer, the glass fiber material is firstly wound and bonded in each of the middle connecting grooves until each of the middle connecting grooves is filled with the glass fiber material, and then the bamboo strips layer is wound and bonded;

[0027] (4) After the port stop and the bamboo strip layer are solidified and formed, a reinforcement layer is obtained that forms an integral part with the integral rubber ring, and then demoulding is performed to obtain a bundle joint structure based on the integral rubber ring.

[0028] The above-mentioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0029] In general, the above technical solution conceived by the present invention has the following beneficial effects compared with the prior art:

[0030] (1) The bundle joint structure based on the integral rubber ring of the present invention effectively avoids the setting of the inner lining layer in the bundle joint structure through the corresponding setting of the integral rubber ring, simplifies the preparation process of the bundle joint structure, avoids the leakage problem caused by damage to the inner lining layer of the traditional bundle joint structure, and improves the stability and reliability of the bamboo composite pipe connection structure; at the same time, through the setting of the upper end connection grooves on the outer peripheral wall surfaces at both ends of the integral rubber ring and the corresponding setting of the two-end stoppers, the axial limitation of the bamboo strip layer can be effectively achieved, and the separation of the reinforcement layer and the integral rubber ring due to axial force or radial force is avoided, thereby ensuring the integrity of the bundle joint structure after preparation, ensuring the strength and stability of the bundle joint structure, extending the service life of the bamboo composite pipe connection structure, and reducing the application cost and maintenance cost of the bamboo composite pipe;

[0031] (2) The beam joint structure based on the integral rubber ring of the present invention further enhances the stability of the port stop by providing flanges at both ends of the integral rubber ring and covering one end of the port stop in the annular groove formed by the flanges, thereby fully avoiding the separation of the integral rubber ring and the reinforcement layer, while ensuring the integrity, sealing and strength of the beam joint structure, thereby extending the service life of the beam joint structure;

[0032] (3) The bundle joint structure based on the integral rubber ring of the present invention is provided with an outer treatment layer by winding and bonding the outer periphery of the bamboo strip layer, so that the end of the outer treatment layer overlaps the outer peripheral wall surface of the end stop, thereby effectively realizing the closure of the joint between the bamboo strip layer and the end stop, avoiding the separation of the end stop and the bamboo strip layer, improving the integrity of the bamboo strip layer and the end stop, extending the service life of the reinforcement layer after the setting, and ensuring the reliability of the bundle joint structure;

[0033] (4) The bundle joint structure based on the integral rubber ring of the present invention is configured such that the opening width of the connection groove is smaller than the maximum width, and is further preferably configured such that the opening of the connection groove is a short side of the two parallel sides of the trapezoid. By using the above configuration, after the glass fiber material fills the connection groove, the connection groove can limit the glass fiber layer axially and radially, thereby avoiding the separation of the integral rubber ring and the reinforcement layer, and ensuring the integrity and stability of the bundle joint structure.

[0034] (5) The bundle joint structure based on the integral rubber ring of the present invention has a simple structure and a convenient preparation method, which can effectively simplify the preparation process of the bundle joint structure, improve the preparation efficiency, and reduce the preparation cost. The bundle joint structure has high strength and good sealing performance, which can effectively ensure the strength and sealing performance of the bamboo composite pipe connection structure, extend the service life of the bamboo composite pipe connection structure, and reduce the application cost and maintenance cost of the bamboo composite pipe. It has good practical value and promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is a structural cross-sectional view of a bundle segment structure based on an integral rubber ring in an embodiment of the present invention;

[0036] Figure 2 is a structural cross-sectional view of the beam section structure in the embodiment of the present invention when in operation;

[0037] In all the drawings, the same figure marks represent the same technical features, specifically: 1. Integral rubber ring, 101. First spur, 102. Second spur, 103. Internal baffle, 104. Connecting groove, 105. Flange; 2. Reinforcement layer, 201. Filling ring, 202. Bamboo strip layer, 203. Port baffle, 204. External treatment layer; 3. Pipe, 3a. First pipe, 3b. Second pipe, 301. First sealing groove, 302. Second sealing groove. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0039] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0041] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0043] Example:

[0044] See also Figure 1 , 2 The beam segment structure in the preferred embodiment of the present invention is composed of an integral rubber ring 1 and a reinforcement layer 2. The integral rubber ring 1 includes a tubular body, which is made of heat-resistant rubber and has good heat resistance and certain elastic deformation properties. Each part of the body has a certain thickness in the radial direction to ensure the stability of its structure.

[0045] Furthermore, an inner stopper 103 of a certain thickness is provided along the annular direction on the inner side of the middle part of the body, which is used to abut against the ends of the sockets of the two bamboo composite pipes to be connected to achieve the limit position of the sockets; at least one thorn structure is provided on both sides of the inner stopper 103, and the thorn is a circular ring structure provided along the annular direction. The outer side of the circular ring structure corresponding to the outer peripheral wall surface is fixed on the inner peripheral wall surface of the body, and the inner side thereof extends toward the side close to the inner stopper 103, such as Figure 1As shown in ; from another perspective, the spurs in the preferred embodiment can be regarded as a convex ring arranged on the inner circumferential wall surface of the main body, the outer circumferential wall surface of the convex ring is fixedly connected to the inner wall surface of the main body, and the axial thickness of the convex ring decreases continuously as the diameter decreases, and the distance between each position of the convex ring and the plane where the internal stop 103 is located decreases continuously as the diameter decreases.

[0046] Furthermore, in a preferred embodiment, the internal stopper 103 has at least two spurs on both sides of the body along the axial direction. In a preferred embodiment, the internal stopper 103 has two spurs on either side, namely, a first spur 101 and a second spur 102. Figure 1 As shown in . Obviously, the number of spurs can be set not only to the above two, but also to one or more than two according to actual needs, which can be set accordingly according to the length of the bundle section and the length of the socket. Accordingly, the first spur 101 and the second spur 102 are arranged at intervals in the axial direction, and a groove is arranged along the circumferential direction on one side of each spur close to the internal stop 103, so that the inner side of each spur can be correspondingly accommodated in the groove on one side when a radial force is applied, ensuring that the socket can be correspondingly inserted into the bundle section.

[0047] Furthermore, a plurality of connection grooves 104 are axially spaced apart on the outer peripheral wall of the main body for stable connection between the outer peripheral wall of the main body and the reinforcing layer 2. In a preferred embodiment, the connection grooves 104 are circumferentially provided, and the number thereof corresponds to the number of spurs and baffles; specifically, one connection groove 104 is provided for each spur, which is provided on the outside of the spur setting position; and two connection grooves 104 are provided for the internal baffle 103, which are provided on the outer peripheral wall on both sides of the internal baffle 103, and are preferably symmetrically provided with the internal baffle 103. Furthermore, in a preferred embodiment, the thickness of the main body at the position where the connection groove 104 is provided is not less than the minimum value of the main body wall thickness at the position where the connection groove 104 is not provided. Obviously, with Figure 1 It can be seen from the shown content that at the connection groove 104 corresponding to the spur, due to the setting of the spur, the minimum thickness of the connection groove 104 at the opening position can be not less than the thickness of the main body at the flat surface between the two connection grooves 104; at the same time, the connection grooves 104 arranged on the outer periphery of both sides of the internal baffle 103 do not have grooves on the inner peripheral wall surface of the main body corresponding to the opening position, nor are there spur structures.

[0048] Through the above arrangement, an integral rubber ring 1 with spurs and baffles can be obtained, the length of which is not less than the sum of the lengths of the socket ends of the two bamboo composite tubes, and the two ends of the rubber ring can be respectively sleeved on the outer periphery of the sockets of the two bamboo composite tubes to achieve the corresponding connection of the two bamboo composite tubes. At the same time, the spurs (101, 102) and the internal baffles 103 in the integral rubber ring 1 are preferably formed integrally with the body to improve the stability and reliability of the force of the integral rubber ring 1; and the arrangement of the spurs and baffles is simple, the stability is high, and the opening of the connection groove is completed in the molding process of the rubber ring or opened in a corresponding manner after molding, which is easy to achieve using existing technology, greatly simplifying the preparation process of the bundle section.

[0049] Furthermore, a reinforcement layer 2 is correspondingly arranged on the outer periphery of the body, and it is combined with the integral rubber ring 1 to form a tubular bundle structure, which is used to provide support from the outside to support the integral rubber ring 1 to form a regular tubular structure. The innermost side of the reinforcement layer 2 corresponds to each connection groove 104 and is formed with a corresponding "convex ring" structure, which is correspondingly embedded in and fills the connection groove 104, such as Figure 1 As shown in . The corresponding arrangement of the connection groove 104 enables a stable connection between the integral rubber ring 1 and the reinforcing layer 2, and prevents the integral rubber ring 1 and the reinforcing layer 2 from being separated due to the force acting in the axial direction, thereby ensuring the integrity of the bundle segment structure.

[0050] Further preferably, in order to prevent the integral rubber ring 1 and the reinforcing layer 2 from being separated by radial force, the connecting groove 104 in the preferred embodiment is configured to have an opening width that is smaller than the maximum width of the connecting groove 104, and further preferably, the width of the opening position of the connecting groove 104 is the minimum width of the connecting groove 104. Specifically, the connecting groove 104 in the preferred embodiment is an annular groove with a trapezoidal cross section, and the width of the opening of the connecting groove 104 just corresponds to the length of the shorter side of the two parallel sides of the trapezoid, such as Figure 1 As shown in . With the above arrangement, the reinforcing layer 2 and the integral rubber ring 1 can be connected and fastened by the reinforcing layer material embedded in the connection groove 104, so as to prevent the integral rubber ring 1 from being separated from the reinforcing layer 2 due to radial force, and ensure that the integral rubber ring 1 and the reinforcing layer 2 are always in an integral tubular structure. Of course, in order to ensure the tight connection between the integral rubber ring 1 and the reinforcing layer 2, an adhesive, such as an adhesive resin, can also be applied between the inner peripheral wall surface of the reinforcing layer 2 and the outer peripheral wall surface of the integral rubber ring 1 to achieve the connection and fastening between the integral rubber ring 1 and the reinforcing layer 2.

[0051] In order to further improve the matching stability between the reinforcing layer 2 and the integral rubber ring 1, in a preferred embodiment, flanges 105 of a certain length are respectively turned outward at both ends of the integral rubber ring 1, and the flanges 105 are obtained by extending the two ends of the integral rubber ring 1 radially outward by a certain width and then extending them axially toward each other by a certain length. By setting the two flanges 105, after the reinforcing layer 2 is correspondingly set, the inner peripheral wall surfaces of the two flanges 105 can be closely attached to the end surface and the outer peripheral wall surface of the end of the reinforcing layer 2, so as to achieve the covering of the two ends of the reinforcing layer 2, which can further ensure the connection stability between the integral rubber ring 1 and the reinforcing layer 2, and avoid the separation of the two in the axial and radial directions.

[0052] More specifically, the reinforcement layer 1 in the preferred embodiment is as follows Figure 1 As shown in , it includes a slot-filling ring 201, a bamboo strip layer 202 and a port stop 203. Among them, the slot-filling ring 201 is used to fill all the connection slots 104 except the two connection slots 104 at the two ends, and it is preferably obtained by correspondingly winding and filling each connection slot 104 with glass fiber material, and when setting the slot-filling ring 201, it is preferably stopped after being flush with the outer peripheral wall surface of the integral rubber ring 1 body. Of course, in order to allow the outer peripheral wall surface of the slot-filling ring 201 to fully contact and bond with the inner peripheral wall surface of the bamboo strip layer 202, the outer peripheral wall surface of the slot-filling ring 201 in the preferred embodiment is set to a circular arc shape, that is, the radial winding thickness of the slot-filling ring 201 decreases successively from the middle to both sides; at the same time, after the glass fiber material is wound to the opening of the flush connection slot 104, it is preferably extended to both sides of the axial direction and wound for a certain width, such as Figure 1 as shown in .

[0053] Further, in the preferred embodiment, the outer peripheral wall surfaces at both ends of the integral rubber ring 1 are wound and bonded with port stops 203, which are preferably made of glass fiber material wound and bonded, and one side of the port stops 203 is flush with the end surface of the integral rubber ring 1 (in this case, there is no "flange 105" set) or abuts the inner peripheral wall surface of the flange 105, and the other side thereof extends axially and covers the connection groove 104 located at the end of the integral rubber ring 1. Specifically, when forming the port stops 203 at both ends of the integral rubber ring 1, the glass fiber material is first wound and bonded in the connection groove 104 located at the end, and after the glass fiber material in the connection groove 104 is flush with the outer peripheral wall surface of the body, it is wound and bonded radially outwardly to a certain thickness on both axial sides of the connection groove 104 to form the port platform 203.

[0054] When flanges 105 are respectively provided at both ends of the integral rubber ring 1 in the preferred embodiment, one end of the port stopper 203 extends into the annular groove formed by the flange 105, and the other end protrudes from the axially protruding end of the flange 105, that is, the distance between the opposite sides of the two port stoppers 203 is smaller than the distance between the ends of the two flanges 105. By setting the inner side of the port stopper 203 to correspond to the matching connection groove 104, the stability of the port stopper 203 is ensured.

[0055] Further, a bamboo strip layer 202 of a certain thickness is wound between the two end stops 203, and the thickness of the bamboo strip layer 202 is preferably equal to the thickness of the end stop 203, that is, the outer peripheral wall surface of the bamboo strip layer 202 is flush with the outer peripheral wall surface of the end stop 203 on both sides. Obviously, when the bamboo strip layer 202 is wound and bonded, it is closely attached to and bonded to the outer peripheral wall surface of each slot filling ring 201 arranged on the outer peripheral wall surface of the body. At the same time, the bamboo strip layer 202 in the preferred embodiment preferably adopts the winding sequence of "circumferential bamboo strips + axial bamboo strips + circumferential bamboo strips", that is, the innermost and outermost sides of the bamboo strip layer 202 are respectively wound and bonded with circumferential bamboo strips, so as to achieve reliable overlap of the inner side and stable molding of the outer side. Further preferably, the proportion of annular bamboo strips in the entire bamboo strip layer 202 is greater than 50%, that is, the thickness of the circumferential bamboo strip layer is greater than the winding thickness of the axial bamboo strip layer.

[0056] Further preferably, after the bamboo strips layer 202 is wrapped and bonded to form, an outer treatment layer 204 of a certain thickness is wrapped and bonded to the outermost side of the bamboo strips layer 202, which is preferably wound and formed with a glass fiber material, and both ends of the outer treatment layer 204 are flush with the two ends of the two end stops 203 that are away from each other (when the "flange 105" is not provided), or the two ends of the outer treatment layer 204 respectively abut the ends of the two flanges 105.

[0057] Through the above-mentioned arrangement, a reinforcing layer 2 can be obtained which is arranged on the outer periphery of the integral rubber ring 1. The structural layers or structural parts in the reinforcing layer 2 abut against each other and are tightly bonded to form a stable overall structure, and the reinforcing layer 2 also forms a stable overall structure with the integral rubber ring 1 to obtain a tubular bundle segment structure.

[0058] Furthermore, the matching between the bundle structure and the two pipes 3 is also as follows Figure 2As shown in , the socket end of the first pipe 3a is correspondingly inserted into one end of the bundle section, and the end thereof abuts against one side of the internal stop 103, and the socket end of the second pipe 3b is correspondingly inserted into the other end of the bundle section, and the end of the second pipe 3b abuts against the other side of the internal stop 103; further, grooves are provided on the outer circumference of the two socket ends corresponding to the first spurs 101 and the second spurs 102 along the circumferential direction, namely the first sealing groove 301 and the second sealing groove 302. Specifically, when the bundle section structure matches the two pipes 3, the first spurs 101 at both ends of the bundle section structure can be correspondingly embedded in the first sealing groove 301 with their ends, and the second spurs 102 arranged on both sides of the internal stop 103 can be correspondingly embedded in the second sealing groove 302 near the end of the corresponding pipe 3. The arrangement of the first spurs 101 and the second spurs 102 can effectively achieve the sealing of the two pipes 3 after docking, and prevent leakage after the pipes are connected, and the arrangement of the reinforcing layer 2 can fully ensure the strength and stability of the pipe docking position.

[0059] Furthermore, the beam segment structure in the preferred embodiment is preferably prepared in the following manner, which includes the following steps:

[0060] (1) The integral rubber ring 1 is molded. In a preferred embodiment, the integral rubber ring 1 is prepared by injection molding, and an integral rubber ring 1 having a spur, an internal stop 103, a connecting groove 104 and a flange 105 is obtained for standby use. In a preferred embodiment, the number of connecting grooves 104 is greater than 2.

[0061] (2) Winding and bonding of the slot filling ring 201

[0062] The integral rubber ring 1 is correspondingly mounted on the special mold, and except for the two connection grooves 104 located on the two sides of the body, the glass fiber material is wound and bonded into the other connection grooves 104, so that each connection groove 104 is filled with glass fiber material and flush with the outer peripheral wall surface of the body, forming a slot filling ring 201. In a preferred embodiment, the outer peripheral wall surface of the slot filling ring 201 slightly protrudes from the outer peripheral wall surface of the body, and extends to a certain length on both sides of the axial direction of the slot.

[0063] (3) Winding and bonding the port stopper 203

[0064] The port stopper 203 of a certain thickness and a certain length is wound and bonded to the outer peripheral wall surfaces at both ends of the body; specifically, when winding and bonding the port stopper 203, the glass fiber material is firstly wound and bonded to the connection groove 104 at the end, and after the connection groove 104 is filled, it is wound radially outwardly to a certain thickness on the outer peripheral wall surface of the body to form the port stopper 203. Obviously, the innermost side of the port stopper 203 is formed with a convex ring structure embedded in the end connection groove 104, so as to achieve the stable setting of the port stopper 203.

[0065] When the end of the integral rubber ring 1 is not provided with a flange 105, the two end stoppers 203 are wound and formed so that the ends are flush with the two side end surfaces of the integral rubber ring 1;

[0066] When the end of the integral rubber ring 1 is provided with a flange 105, the two end stoppers 203 are wound and formed, and one end of the two end stoppers 203 is accommodated in the concave cavity formed by the flange 105, and one side of the end stopper 203 abuts against the inner wall of the flange 105, and the thickness of the end stopper 203 is equal to or slightly smaller than the radial width of the concave cavity of the integral rubber ring 1, so that the outer peripheral wall of one end of the end stopper 203 abuts against the inner wall of the flange 105 facing the outer peripheral wall of the integral rubber ring 1. At the same time, the axial length of the end stopper 203 is greater than the axial length of the flange 105, that is, one side wall of the end stopper 203 abuts against the inner wall of the flange 105, and the other side wall protrudes from the end of the flange 105.

[0067] (3) Winding and bonding the bamboo strip layer 202

[0068] After the two-port stoppers 203 are arranged, bamboo strips are wound and bonded to a certain thickness on the outer peripheral wall of the integral rubber ring 1 between the two-port stoppers 203 to form a bamboo strip layer 202 .

[0069] When winding and bonding the bamboo strip layer 202, it is preferred to perform winding and bonding in the manner of "circumferential bamboo strip layer + axial bamboo strip layer + circumferential bamboo strip layer", and ensure that the outermost layer and the innermost layer of the bamboo strip layer 202 are respectively the circumferential bamboo strip layer, and the thickness of the circumferential bamboo strip layer is not less than half of the overall thickness of the bamboo strip layer 202. Finally, after the bamboo strip layer 202 is wound and bonded, its outer peripheral wall surface is preferably flush with the outer peripheral wall surface of the port stop 203.

[0070] (4) Winding and bonding of the outer treatment layer 204

[0071] After the bamboo strips layer 202 is formed, an outer treatment layer 204 of a certain thickness can be further wound and bonded on the outer peripheral wall surface of the bamboo strips layer 202. The outer treatment layer 204 can be made of bamboo fiber material, glass fiber material, non-woven fabric, mesh cloth and other materials.

[0072] When the flanges 105 are not provided at both ends of the body, the outer treatment layer 204 is provided on the outer peripheral wall surface of the port stop 203 and the bamboo strip layer 202 , and the end portions are flush with the two end surfaces of the two port stops 203 which are away from each other.

[0073] When flanges 105 are provided at both ends of the body, since one end of the port stop 203 protrudes from the end of the flange 105, the end of the outer treatment layer 204 can overlap on the outer peripheral plane of the end of the port stop 203 and abut the end of the flange 105. Figure 1 as shown in .

[0074] (5) After the end stop 203, the bamboo strip layer 202, the slot filling ring 201 and the outer treatment layer 204 are solidified and formed, the reinforcement layer 2 is obtained, and after demolding, a beam node structure that meets the requirements is obtained.

[0075] Through the preparation of the above steps, a bundle joint structure containing an integral rubber ring can be obtained. The preparation method of the above process is simple, and the obtained bundle joint structure has good integrity, can accurately realize the connection and docking of two pipes, and ensure the sealing and accuracy of the docking of bamboo composite pipes; in addition, the integral production of the rubber ring can effectively avoid the setting of the bundle joint lining layer, while ensuring the structural strength and rigidity of the bundle joint structure, simplifying the preparation process of the bundle joint, reducing the difficulty of preparing the bundle joint, improving the convenience and reliability of the use of bamboo composite pipes, reducing the application cost of bamboo composite pipes, and promoting the application and promotion of bamboo composite pipes. It has good application prospects and promotion value.

[0076] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A beam joint structure based on an integral rubber ring, characterized in that: It includes an integral rubber ring and a reinforcement layer which are sequentially arranged from the inside to the outside in the radial direction; The integral rubber ring comprises a body with a tubular structure, an inner wall surface of the body is provided with an internal stopper in the circumferential direction, and the inner stopper is provided with a first spur and a second spur on both sides of the axial direction of the bundle segment structure, and the first spur and the second spur can be embedded in the sealing groove of the corresponding pipe socket end at their ends; The first spur and the second spur are annular structures arranged along the inner circumference of the body, the outermost sides of which are closely connected to the inner circumferential wall of the body, and the inner ends of the first spur and the second spur are offset to one side of the inner stop; the outer circumferential walls at both ends of the body are respectively provided with end connection grooves along the circumferential direction; The reinforcing layer is wound and bonded on the outer peripheral wall of the body, and includes a bamboo strip layer and a port stopper; the port stopper is two ports arranged on the outer peripheral wall at both ends of the body, the two port stops respectively cover the corresponding end connection grooves, and an annular convex ring is formed on the inner peripheral wall of the two port stops respectively, and the annular convex ring is embedded in the corresponding end connection groove; the bamboo strip layer is arranged on the outer peripheral wall of the body between the two port stops, and its two ends respectively abut against the corresponding port stops; At least one middle connecting groove is provided on the outer peripheral wall surface of the body between the two port baffles; A slot-filling ring is embedded in the middle connecting slot, and the slot-filling ring is formed by winding and bonding a glass fiber material, and its outer peripheral wall surface is tightly attached to and bonded to the inner peripheral wall surface of the bamboo strip layer; The outer peripheral wall surface of the slot filling ring protrudes from the outer peripheral wall surface of the body, and the portion of the slot filling ring protruding from the outer peripheral wall surface of the body extends to both sides of the opening of the middle connecting groove with a certain width respectively; The bamboo strips layer is formed by alternately winding and bonding circumferential bamboo strips and axial bamboo strips in the radial direction; The two ends of the body are respectively provided with flanges; the two flanges are obtained by extending the two ends of the body radially outward for a certain length and then axially extending towards each other for a certain length, and the axial extension length of the flanges is less than the axial length of the port stop.

2. The beam segment structure based on an integral rubber ring according to claim 1, wherein: The radial distance between the outer peripheral wall surface of the slot filling ring and the outer peripheral wall surface of the body decreases from the middle to both sides.

3. The beam segment structure based on an integral rubber ring according to claim 1, wherein: The innermost and outermost sides of the bamboo strip layer are respectively formed by winding and bonding the circumferential bamboo strips, and the total winding thickness of the circumferential bamboo strips is not less than the total winding thickness of the axial bamboo strips.

4. The bundle joint structure based on an integral rubber ring according to any one of claims 1 to 3, wherein: The opening width of the connecting groove is smaller than the maximum width of the connecting groove along the axial direction.

5. The bundle joint structure based on an integral rubber ring according to any one of claims 1 to 3, wherein: The axial thickness of the first spur and the second spur at each position decreases as the diameter decreases.

6. A method for preparing a bundle segment structure, used for preparing a bundle segment structure based on an integral rubber ring according to any one of claims 1 to 5, the steps of which are as follows: (1) forming an integral rubber ring for standby use, so that an inner stopper, a first spur and a second spur are provided on the inner side of the integral rubber ring, and end connection grooves are respectively provided on the outer peripheral wall surfaces at both ends of the integral rubber ring; (2) The integral rubber ring is mounted on a special mold, and the material for forming the port stopper is respectively wound and bonded in the two end connection grooves, and after the end connection grooves are filled, the port stopper is continuously formed on the outer peripheral wall surface of the body outside the end connection grooves by winding and bonding; (3) wrapping and bonding bamboo strips material on the outer peripheral wall surface of the body between the two port baffles to form bamboo strips layers with two ends respectively abutting against the side walls of the port baffles; When a middle connecting groove is provided on the outer peripheral wall surface of the body between the two end baffles, before winding and bonding the bamboo strips layer, the glass fiber material is firstly wound and bonded in each of the middle connecting grooves until each of the middle connecting grooves is filled with the glass fiber material; (4) After the port stop and the bamboo strip layer are solidified and formed, a reinforcement layer is obtained that forms an integral part with the integral rubber ring, and then demoulding is performed to obtain a bundle joint structure based on the integral rubber ring.

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