Optimization method of large-inner-diameter buckling-pressing type short-core tube rubber hose connector and rubber hose connector

Abstract

The invention relates to an optimization method for a large-inner-diameter buckling-pressing type short-core pipe rubber pipe joint and the rubber pipe joint, belongs to the hydraulic pipeline sealing technology, and can optimize the size of the rubber pipe joint by the optimization method for the large-inner-diameter buckling-pressing type short-core pipe rubber pipe joint. The large-inner-diameter buckling and pressing type short core tube rubber tube connector comprises a connector core tube and a sleeve, wherein the connector core tube is provided with a sawtooth-shaped buckling and pressing part, an insertion end and a limiting boss, and the sleeve is provided with a sawtooth-shaped buckling and pressing part. The large-inner-diameter buckling and pressing type short-core-pipe rubber pipe connector can be used for sealing a rubber pipe with the large inner diameter, the core pipe is short, machining is convenient, cost is low, leakage at the joint of the rubber pipe is effectively prevented after buckling and pressing, and stability and safety of operation of a pipeline system are guaranteed.

Description

Technical Field

[0001] The invention belongs to hydraulic pipeline sealing technology, and in particular relates to an optimization method for a large inner diameter buckled short-core tube hose joint and a hose joint. Background Art

[0002] In the hydraulic system, the hose joint is an important component for connecting hydraulic elements, which is used to connect two hoses or connect the hose to other equipment. Its main function is to transmit liquid or gas, and it also prevents liquid or gas leakage. Its performance directly affects the stability and safety of the entire system. In the related research on hose joints, the patent (CN107420671A) of the rubber head pipe connection with a joint core rod provided with a tube core buckling groove and a jacket provided with a jacket buckling part as the main body solves the problem of tightness and sealing of the connection to a certain extent. The patent sets a tube core buckling groove on the joint core rod and a buckling part on the jacket, and realizes the tight connection between the joint core rod and the jacket through the buckling process. In particular, the patent optimizes the buckling effect of the joint by designing the taper and arc R angle of the tube core buckling groove, reduces the gap and looseness caused by tolerance, and improves the sealing and durability of the joint.

[0003] However, the existing technology still has its limitations. In practical applications, the existing joint design may not guarantee stability under large inner diameter and high flow working conditions. At the same time, the design of the long core tube does not have advantages in the response speed and volume of the joint, and a more precise crimping process is required to ensure the reliability of the connection. In view of the above problems, an improved large inner diameter, short core tube hose joint design should be proposed. Summary of the invention

[0004] In view of the above situation, the present invention provides an optimization method for a large inner diameter crimping short core tube hose joint and a hose joint. The hose joint can be used for sealing hoses with larger inner diameters. The short core tube is convenient for processing and has low cost. After crimping, it can effectively prevent leakage at the hose connection, thereby ensuring the stability and safety of the pipeline system operation.

[0005] Specifically, the first aspect of the present invention provides a method for optimizing a large inner diameter crimping short-core hose joint, which comprises the following steps:

[0006] S1. Determine the basic parameters of the hose: Determine the outer diameter D of the core tube of the hose joint according to the inner diameter d of the hose to be sealed or connected 芯 , according to the outer diameter D of the hose 芯 Determine the inner diameter d of the sleeve 套 , and the number of teeth N of the core tube and sleeve;

[0007] S2. Determine the tooth profile parameters of the sawtooth of the core tube serrated crimping portion and the sleeve serrated crimping portion to be optimized: the tooth profile optimization parameters of the sawtooth of the core tube serrated crimping portion are the single tooth length L 芯 , tooth height H 芯 , the angle A between the first side bevel and the axis, and the angle B between the second side bevel and the axis; the tooth shape of the sawtooth of the sleeve sawtooth buckling part requires the optimization parameter of the single tooth length L 套 , tooth height H 套 and the width W of the tooth top plane;

[0008] S3. Establish a physical model of the hose joint, use analytical methods to establish the hose joint performance index and establish the optimization objective function. The optimization objective function includes the core tube axial stress optimization function, the sleeve axial stress optimization function, the core tube annular stress optimization function and the sleeve annular stress optimization function. The specific optimization objective function is as follows:

[0009] Core tube axial stressσ 轴芯 The calculation formula is:

[0010] σ 轴芯 =(F A Sin A+F B SinB) / πN(D 芯 H 芯 -H 芯 2 )

[0011] Sleeve axial stress σ 轴套 The calculation formula is:

[0012] σ 轴套 =6H 套 (F A SinA–F B SinB) / πNL 套 (d 套 +H 套 )

[0013] Core tube hoop stressσ 环芯 The calculation formula is:

[0014] σ 环芯 =(F A CosA +F B Cos B) / πNd 套 W

[0015] Sleeve hoop stressσ 环套 The calculation formula is:

[0016] σ 环套 =(F A CosA+F B Cos B) / πNL套 (d 套 +H 套 )

[0017] Among them, F A F is the force of the hose on the first side slope of the serrated crimping part of the core tube under working conditions after the hose joint is assembled. B It is the force of the hose on the second side slope of the serrations of the serration-shaped crimping portion of the core tube under working conditions after the hose joint is assembled;

[0018] S4. Establish constraints based on the size of the hose joint and the size of the hose. The length of the core tube inserted into the hose should be 1.5 to 3 times the inner diameter of the hose and not less than the sleeve length, that is, d≤NL 芯 ≤2d;

[0019] S5, using the target optimization function in step S3 to optimize the hose joint, and obtain the optimal solution set with the maximum joint hoop stress and the minimum joint axial stress; wherein the joint hoop stress is the core tube hoop stress σ 环芯 and sleeve hoop stress σ 环套 The sum of the joint axial stress is the core tube axial stress σ 轴芯 and sleeve axial stress σ 轴套 sum;

[0020] S6. Calibrate the optimized hose joint, and determine whether the optimized hose joint parameter performance meets the requirements based on the maximum pressure borne by the hose. If so, output the size parameters. If not, return to step S5 to re-optimize the hose joint.

[0021] Preferably, in step S1, D 芯 The value is equal to d+1.0mm, d 套 The value is equal to D+1.5mm, where d is the inner diameter of the hose and D is the outer diameter of the hose.

[0022] Preferably, the optimization objective function in step S3 is iteratively solved by MATLAB software.

[0023] Preferably, in step S6, the specific method for judging whether the performance of the optimized hose joint parameters meets the requirements is: after obtaining the product according to the optimized parameters, a destructive test is performed or a simulation test is performed using mechanical analysis software.

[0024] On the other hand, the present invention provides a large inner diameter buckle type short core tube rubber hose joint, which comprises a joint core tube and a sleeve, wherein the joint core tube comprises a core tube serrated buckle portion and an insertion end, and the sleeve comprises a sleeve serrated buckle portion; the joint core tube and the sleeve can be connected by means of the core tube serrated buckle portion and the sleeve serrated buckle portion that cooperate with each other;

[0025] A limiting boss is arranged on the first side of the sawtooth-shaped buckling portion of the core tube, and the first side of the sawtooth-shaped buckling portion of the sleeve cooperates with the second side of the limiting boss of the joint core tube;

[0026] The tooth tops of the saw teeth of the sleeve sawtooth-shaped buckling part are aligned with the tooth bottoms of the saw teeth of the core tube sawtooth-shaped buckling part, and the number of teeth of the saw teeth of the core tube sawtooth-shaped buckling part and the sleeve sawtooth-shaped buckling part is equal.

[0027] Preferably, the angle between the first side slope of the sawtooth of the sawtooth-shaped buckling portion of the core tube and the axis is 10° to 30°, the angle between the second side slope and the axis is 20° to 40°, and the top of the tooth is provided with a fillet with a radius of 0.5 mm.

[0028] Preferably, the angle between the first side inclined surface of the sawtooth of the sawtooth-shaped buckling portion of the sleeve and the axis is 30° to 60°, the second side of the sawtooth is a right angle, the tooth top is a plane, and the plane width is 1.0mm to 3.0mm.

[0029] Preferably, the insertion end is arranged on the second side of the joint core tube, the taper of the insertion end is the same as the taper of the second side of the sawtooth, and the length of the insertion end is 6.0 mm to 10.0 mm.

[0030] Preferably, the tooth height of the saw teeth of the sawtooth-shaped crimping portion of the core tube is 1.5 mm-2.5 mm; the tooth height of the saw teeth of the sawtooth-shaped crimping portion of the sleeve is 2.0 mm-3.0 mm.

[0031] Preferably, the number of teeth of the serrated pressing portion of the core tube and the serrated pressing portion of the sleeve is 5-10.

[0032] Compared with the prior art, the characteristics and beneficial effects of the present invention are:

[0033] (1) The optimization method of a large inner diameter crimping short core tube hose joint provided by the present invention can determine the tooth profile parameters of the core tube serrated crimping portion and the sleeve serrated crimping portion to be optimized according to the basic parameters of the hose, establish a physical model of the hose joint, use an analytical method to establish the hose joint performance index and establish the optimization objective function, and establish the hose joint size and hose size constraint conditions, optimize the hose joint, and obtain the optimal solution set with the maximum circumferential stress and the minimum axial stress of the joint. After correction, the optimal size parameters are output. The whole method is simple and easy to implement, with high accuracy, and can obtain a large inner diameter crimping short core tube hose joint with the best performance.

[0034] (2) The large inner diameter crimping type short core tube hose joint provided by the present invention comprises a joint core tube and a sleeve, wherein the joint core tube comprises a core tube serrated crimping portion and an insertion end, and the sleeve comprises a sleeve serrated crimping portion; the joint core tube and the sleeve can be connected by means of the core tube serrated crimping portion and the sleeve serrated crimping portion that cooperate with each other. The hose joint has a simple overall structure, low cost, and is easy to process and install. After the joint core tube and the sleeve are crimped, leakage at the hose connection can be effectively prevented, thereby ensuring the stability and safety of the pipeline system operation. Frequent maintenance or replacement is not required, thereby greatly reducing the waste of manpower and material resources.

[0035] (3) The large inner diameter crimping type short core tube rubber hose joint provided by the present invention has rounded corners at the top of the serrated edges of the crimping portion of the joint core tube. On the one hand, the rounded corner design can largely avoid damage to the inner rubber layer of the rubber hose. On the other hand, sufficient clearance space can avoid damage to the crimping portion of the outer tube caused by excessive concentrated stress during crimping installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural schematic diagram of a large inner diameter buckled short core hose joint of the present invention;

[0037] Figure 2 It is a schematic diagram of the method flow of the present invention;

[0038] Figure 3 This is a schematic diagram of the shape parameters of the core tube of the hose joint of the present invention;

[0039] Figure 4 It is a schematic diagram of the shape parameters of the hose joint sleeve of the present invention.

[0040] Some of the reference numerals in the figure are as follows:

[0041] 1-connector core tube; 2-sleeve; 3-connector core tube insertion end; 4-sleeve serrated pressing portion; 5-core tube serrated pressing portion; 6-limiting boss. DETAILED DESCRIPTION

[0042] In order to fully describe the technical content, structural features, objectives and effects of the present invention, the following will be described in detail with reference to the accompanying drawings.

[0043] Specifically, the first aspect of the present invention provides a method for optimizing a large inner diameter crimping short core hose joint, such as Figure 2 As shown, it includes the following steps:

[0044] S1. Determine the basic parameters of the hose: Determine the outer diameter D of the core tube of the hose joint according to the inner diameter d of the hose to be sealed or connected 芯 , according to the outer diameter D of the hose 芯 Determine the inner diameter d of the sleeve 套, and the number of teeth N of the core tube and the sleeve. In step S1, D 芯 The value is equal to d+1.0mm, d 套 The value of is equal to D+1.5mm, where d is the inner diameter of the hose and D is the outer diameter of the hose. This step determines the basic parameters of the hose for subsequent optimization.

[0045] S2. Determine the tooth profile parameters of the sawtooth of the core tube serrated crimping portion and the sleeve serrated crimping portion to be optimized: the tooth profile optimization parameters of the sawtooth of the core tube serrated crimping portion are the single tooth length L 芯 , tooth height H 芯 , the angle A between the first side bevel and the axis, and the angle B between the second side bevel and the axis; the tooth shape of the sawtooth of the sleeve sawtooth buckling part requires the optimization parameter of the single tooth length L 套 , tooth height H 套 And the width W of the tooth top plane.

[0046] S3. Establish a physical model of the hose joint, use analytical methods to establish the hose joint performance index and establish the optimization objective function. The optimization objective function includes the core tube axial stress optimization function, the sleeve axial stress optimization function, the core tube annular stress optimization function and the sleeve annular stress optimization function. The specific optimization objective function is as follows:

[0047] Core tube axial stressσ 轴芯 The calculation formula is:

[0048] σ 轴芯 =(F A Sin A+F B SinB) / πN(D 芯 H 芯 -H 芯 2 )

[0049] Sleeve axial stress σ 轴套 The calculation formula is:

[0050] σ 轴套 =6H 套 (F A SinA–F B SinB) / πNL 套 (d 套 +H 套 )

[0051] Core tube hoop stressσ 环芯 The calculation formula is:

[0052] σ 环芯 =(F A CosA+F B Cos B) / πNd 套 W

[0053] Sleeve hoop stressσ 环套 The calculation formula is:

[0054] σ 环套 =(F A CosA+F B Cos B) / πNL 套 (d 套 +H 套 )

[0055] Among them, F A F is the force of the hose on the first side slope of the serrated crimping part of the core tube under working conditions after the hose joint is assembled. B It is the force exerted by the hose on the second side slope of the serrated teeth of the serrated crimping portion of the core tube under working conditions after the hose joint is assembled.

[0056] Preferably, the optimization objective function in this step is iteratively solved by MATLAB software. In specific applications, the iterative calculation process can be carried out in a variety of ways. For example, when solving the size of angle A, other parameters can be set to a fixed value within the required range, and then angle A is added 1° from the minimum value to the maximum value in each iteration, and the stress value is calculated in each iteration, and multiple optimal parameters of angle A are selected. In this way, each parameter has a solution set, and then a combination is selected from it for verification.

[0057] S4. Establish constraints based on the size of the hose joint and the size of the hose. The specific constraints are: the length of the core tube inserted into the hose should be 1.5 to 3 times the inner diameter of the hose and not less than the sleeve length, that is, d≤NL 芯 ≤2d.

[0058] S5, using the target optimization function in step S3 to optimize the hose joint, and obtain the optimal solution set with the maximum joint hoop stress and the minimum joint axial stress; wherein the joint hoop stress is the core tube hoop stress σ 环芯 and sleeve hoop stress σ 环套 The sum of the joint axial stress is the core tube axial stress σ 轴芯 and sleeve axial stress σ 轴套 sum.

[0059] S6. Calibrate the optimized hose joint, and determine whether the optimized hose joint parameter performance meets the maximum pressure borne by the hose. If so, output the size parameters. If not, return to step S5.

[0060] In a specific application, in step S6, the specific method for judging whether the optimized hose joint parameter performance meets the requirements is: after obtaining the product according to the optimized parameters, a destructive test is performed or a simulation test is performed using mechanical analysis software such as ansys. This process is mainly to check whether the joint can ensure sealing under a specified pressure. The sealing is related to the joint strain, the buckling process, and the joint material, which is relatively complicated. Therefore, the present invention only optimizes the stress.

[0061] The hose joint optimization method proposed in the present invention can determine the tooth profile parameters of the serrated crimping portion of the core tube and the serrated crimping portion of the sleeve to be optimized according to the basic parameters of the hose, establish a physical model of the hose joint, use an analytical method to establish the performance index of the hose joint and establish the optimization objective function, and establish the hose joint size and the constraints of the hose size to optimize the hose joint to obtain the optimal solution set with the maximum annular stress of the joint and the minimum axial stress of the joint, and output the optimal size parameters after correction. The whole method is simple and easy to implement, with high accuracy, and can obtain the large inner diameter crimping short core tube hose joint with the best performance.

[0062] On the other hand, the present invention provides a large inner diameter buckle type short core hose joint, such as Figure 1 As shown, it includes a joint core tube 1 and a sleeve 2, the joint core tube 1 includes a core tube serrated buckling portion 5 and an insertion end 3, and the sleeve 2 includes a sleeve serrated buckling portion 4; the joint core tube and the sleeve can be connected by means of the core tube serrated buckling portion 5 and the sleeve serrated buckling portion 4 that cooperate with each other.

[0063] A limiting boss 6 is provided on the first side of the core tube sawtooth buckling portion 5, and the first side of the sleeve sawtooth buckling portion 4 cooperates with the second side of the limiting boss of the joint core tube. The top of the sawtooth of the sleeve sawtooth buckling portion 4 is aligned with the bottom of the sawtooth of the core tube sawtooth buckling portion 5, and the number of teeth of the sawtooth of the core tube sawtooth buckling portion and the sleeve sawtooth buckling portion is equal.

[0064] The angle between the first side slope of the sawtooth of the sawtooth crimping part of the core tube and the axis is 10° to 30°, the angle between the second side slope and the axis is 20° to 40°, and the top of the tooth is provided with a fillet with a radius of 0.5mm. The angle between the first side slope of the sawtooth of the sawtooth crimping part of the sleeve and the axis is 30° to 60°, the second side of the sawtooth is a right angle, the top of the tooth is a plane, and the width of the plane is 1.0mm to 3.0mm. The second side of the joint core tube is provided with an insertion end, the taper of the insertion end is the same as the taper of the second side of the sawtooth, and the length of the insertion end is 6.0mm to 10.0mm.

[0065] In a specific embodiment, Figure 3As shown, the tooth length of the sawtooth of the core tube serrated crimping portion 5 is 8.0 mm, the cone angle of the first side of the sawtooth is 50°, the tooth top is provided with a fillet, and the fillet radius is 0.5 mm. The tooth length of the sawtooth of the sleeve serrated crimping portion 4 is 2.0 mm, the cone angle of the first side of the sawtooth is 60°, the second side of the sawtooth is a right angle, the tooth top is a plane, and the plane width is 1.0 mm. An insertion end is provided on the second side of the joint core tube 1, and the taper of the joint core tube insertion end 3 is the same as the taper of the second side of the sawtooth of the core tube serrated crimping portion 5, and the length of the joint core tube insertion end is 8.0 mm.

[0066] In a specific embodiment, Figure 4 As shown, the tooth height of the saw teeth of the sawtooth-shaped buckling part of the core tube is 1.5mm-2.5mm; the tooth height of the saw teeth of the sawtooth-shaped buckling part of the sleeve is 2.0mm-3.0mm. Specifically, the tooth height of the saw teeth of the sawtooth-shaped buckling part of the core tube can be 1.5mm, 2mm or 2.5mm, and the tooth height of the saw teeth of the sawtooth-shaped buckling part of the sleeve can be 2.0mm, 2.5mm or 3.0mm.

[0067] In a specific embodiment, the number of teeth of the serrated pressing portion of the core tube and the serrated pressing portion of the sleeve is 5-10.

[0068] The working principle of the present invention is as follows:

[0069] The joint core tube 1 is provided with a serrated buckling portion, and the sleeve 2 is provided with a serrated buckling portion. After buckling, the bottom of the serrated teeth 5 of the serrated buckling portion of the joint core tube is aligned with the top of the serrated teeth 4 of the serrated buckling portion of the sleeve, and the rubber hose is squeezed to achieve the purpose of sealing.

[0070] The installation process of the entire joint is as follows:

[0071] Figure 1 It is a structural sectional view of an embodiment of the present invention. In this embodiment, a large inner diameter crimping type short core tube hose joint is provided, which includes a joint core tube 1 and a sleeve 2. The joint core tube 1 is provided with a joint core tube serrated crimping portion, an insertion end 3 and a limiting boss 6, and the sleeve 2 is provided with a sleeve serrated crimping portion.

[0072] The first side of the sawtooth-shaped buckling portion of the joint core tube is provided with a limiting boss 6, and the first side of the sleeve cooperates with the second side of the joint core tube limiting boss 6. In the figure, the first side generally refers to the left side, and the second side generally refers to the right side.

[0073] In actual application, the sleeve 2 is first sleeved on the outer surface of the hose, and then the joint core tube 1 is inserted into the hose from the insertion end 3 until the end face of the hose is close to the second side of the joint core tube limiting boss 6, and then the first side of the sleeve 2 is close to the second side of the joint core tube limiting boss 6.

[0074] The joint core tube 1 of the short core tube is buckled and fitted with the sleeve 2. In the embodiment, the joint core tube 1 and the sleeve 2 should be fixed and the top of the sawtooth 4 of the sleeve serrated buckling portion should be ensured to be aligned with the bottom of the sawtooth 5 of the joint core tube serrated buckling portion. When buckling, the sleeve 2 should be deformed slowly to prevent the top of the sawtooth 5 of the sleeve serrated buckling portion from being misaligned with the bottom of the sawtooth 4 of the joint core tube serrated buckling portion due to deformation.

[0075] The embodiments described above are only descriptions of the preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A method for optimizing a large inner diameter crimping short core hose joint, characterized in that: It includes the following steps: S1. Determine the basic parameters of the hose: Determine the outer diameter D of the core tube of the hose joint according to the inner diameter d of the hose to be sealed or connected 芯 , according to the outer diameter D of the core tube of the hose joint 芯 Determine the inner diameter d of the sleeve 套 and the number of teeth N of the core tube and sleeve; S2. Determine the tooth profile parameters of the sawtooth of the core tube serrated crimping portion and the sleeve serrated crimping portion to be optimized: the tooth profile optimization parameters of the sawtooth of the core tube serrated crimping portion are the single tooth length L 芯 , tooth height H 芯 , the angle A between the first side bevel and the axis, and the angle B between the second side bevel and the axis; the tooth shape of the sawtooth of the sleeve sawtooth buckling part requires the optimization parameter of the single tooth length L 套 , tooth height H 套 and the width W of the tooth top plane; S3. Establish a physical model of the hose joint, use analytical methods to establish the hose joint performance index and establish the optimization objective function. The optimization objective function includes the core tube axial stress optimization function, the sleeve axial stress optimization function, the core tube annular stress optimization function and the sleeve annular stress optimization function. The specific optimization objective function is as follows: Core tube axial stressσ 轴芯 The calculation formula is: σ 轴芯 =(F A That's A+F B SinB) / πN(D 芯 H 芯 -H 芯 2 ) Sleeve axial stress σ 轴套 The calculation formula is: s 轴套 =6H 套 (F A SinA–F B SinB) / πNL 套 (d 套 +H 套 ) Core tube hoop stressσ 环芯 The calculation formula is: s 环芯 =(F A CosA +F B Cos B) / πNd 套 W Sleeve hoop stressσ 环套 The calculation formula is: σ 环套 =(F A WhatA +F B Cos B) / πNL 套 (d 套 +H 套 ) Among them, F A F is the force of the hose on the first side slope of the serrated crimping part of the core tube under working conditions after the hose joint is assembled. B It is the force of the hose on the second side slope of the serrations of the serration-shaped crimping portion of the core tube under working conditions after the hose joint is assembled; S4. Establish constraints based on the size of the hose joint and the size of the hose. The length of the core tube inserted into the hose should be 1.5 to 3 times the inner diameter of the hose and not less than the sleeve length, that is, d≤NL 芯 ≤2d; S5, using the target optimization function in step S3 to optimize the hose joint, and obtain the optimal solution set with the maximum joint hoop stress and the minimum joint axial stress; wherein the joint hoop stress is the core tube hoop stress σ 环芯 and sleeve hoop stress σ 环套 The sum of the joint axial stress is the core tube axial stress σ 轴芯 and sleeve axial stress σ 轴套 sum; S6. Calibrate the optimized hose joint, and determine whether the optimized hose joint parameter performance meets the requirements based on the maximum pressure borne by the hose. If so, output the size parameters. If not, return to step S5 to re-optimize the hose joint.

2. The optimization method for a large inner diameter crimping short core hose joint according to claim 1 is characterized in that: Step S1 D 芯 The value is equal to d+1.0mm, d 套 The value is equal to D+1.5mm, where d is the inner diameter of the hose and D is the outer diameter of the hose.

3. The optimization method for a large inner diameter crimping short core hose joint according to claim 1 is characterized in that: In step S3, the optimization objective function is iteratively solved by MATLAB software.

4. The optimization method for a large inner diameter crimping short core hose joint according to claim 1 is characterized in that: In step S6, the specific method for judging whether the performance of the optimized hose joint parameters meets the requirements is: after obtaining the product according to the optimized parameters, a destructive test is performed or a simulation test is performed using mechanical analysis software.

5. A large inner diameter crimping short core hose joint based on the large inner diameter crimping short core hose joint optimization method according to claim 1, characterized in that: It comprises a joint core tube and a sleeve, wherein the joint core tube comprises a core tube sawtooth buckling portion and an insertion end, and the sleeve comprises a sleeve sawtooth buckling portion; the joint core tube and the sleeve can be connected by means of the core tube sawtooth buckling portion and the sleeve sawtooth buckling portion which cooperate with each other; A limiting boss is arranged on the first side of the sawtooth-shaped pressing portion of the core tube, and the first side of the sawtooth-shaped pressing portion of the sleeve cooperates with the second side of the limiting boss of the joint core tube; The tooth tops of the saw teeth of the sleeve sawtooth-shaped buckling part are aligned with the tooth bottoms of the saw teeth of the core tube sawtooth-shaped buckling part, and the number of teeth of the saw teeth of the core tube sawtooth-shaped buckling part and the sleeve sawtooth-shaped buckling part is equal.

6. The large inner diameter crimping short core hose joint according to claim 5, characterized in that: The angle between the first side inclined surface of the sawtooth of the sawtooth-shaped buckling part of the core tube and the axis is 10° to 30°, the angle between the second side inclined surface and the axis is 20° to 40°, and the top of the tooth is provided with a fillet with a radius of 0.5mm.

7. The large inner diameter crimping short core hose joint according to claim 5, characterized in that: The angle between the first side inclined surface of the sawtooth of the sawtooth-shaped buckling part of the sleeve and the axis is 30° to 60°, the second side of the sawtooth is a right angle, the tooth top is a plane, and the plane width is 1.0mm to 3.0mm.

8. The large inner diameter crimping short core hose joint according to claim 5, characterized in that: The insertion end is arranged on the second side of the joint core tube, the taper of the insertion end is the same as the taper of the second side of the sawtooth, and the length of the insertion end is 6.0 mm to 10.0 mm.

9. The large inner diameter crimping short core hose joint according to claim 5, characterized in that: The tooth height of the saw teeth of the sawtooth-shaped buckling part of the core tube is 1.5mm-2.5mm; the tooth height of the saw teeth of the sawtooth-shaped buckling part of the sleeve is 2.0mm-3.0mm.

10. The large inner diameter crimping short core hose joint according to claim 5, characterized in that: The number of teeth of the sawtooth-shaped buckling part of the core tube and the sawtooth-shaped buckling part of the sleeve is 5-10.

Images