Novel quick coupling type fire-retardant hydraulic rubber pipe

Abstract

This utility model discloses a novel quick-connect flame-retardant hydraulic rubber hose, relating to the field of hydraulic hose technology. The utility model includes a hose body, with a first sheath and a first pressure block sleeved on the outside of the hose body. First bolts penetrate both sides of the outer surface of the first pressure block, and first anti-loosening washers and first nuts are sleeved on the outside of the first bolts. This utility model utilizes a second sheath to protect the hose body, acting as a substitute for the hose body during wear. Therefore, even if the second sheath wears out, it is less likely to damage the hose body, improving safety. Furthermore, the corrugated structure of the second sheath provides good flexibility and pressure-resistant buffering capacity. When the hose body is bent or subjected to external pressure, it can absorb stress through its own deformation, reducing direct impact on the internal hose. This facilitates protection of the hose body, reduces the occurrence of damage to the hose body itself, and improves the stability of the hydraulic circuit.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic pipe technology, specifically a novel quick-connect flame-retardant hydraulic rubber hose. Background Technology

[0002] Quick-connect flame-retardant hydraulic rubber hoses are a type of special rubber hose used in hydraulic systems. They combine quick connection, flame-retardant properties, and hydraulic transmission capabilities, and are widely used in industrial scenarios where safety and convenience are paramount.

[0003] Compared to traditional flange or threaded connections, quick couplings offer "plug and play" functionality, making them particularly suitable for scenarios requiring frequent pipe replacements or emergency repairs. This improves operational efficiency and reduces downtime. The hoses themselves, through the addition of flame retardants or the use of inherently flame-retardant rubber materials, are not easily ignited when exposed to open flames, or can quickly self-extinguish after combustion, reducing the risk of fire.

[0004] Existing quick-connect flame-retardant hydraulic rubber hoses, due to their flexibility, can be bent during use. Therefore, in actual use, the hoses themselves will bend or move, which makes the surface of the hoses prone to wear. Current technology usually increases wear resistance by adding modifiers and additives, but it cannot completely prevent wear. It can only extend the service life of the hose. When the wear is severe, it cannot withstand the internal pressure and hydraulic oil may spray out, so the entire hose must be replaced. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide a novel quick-connect flame-retardant hydraulic rubber hose to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a novel quick-connect flame-retardant hydraulic rubber hose, comprising a hose body, wherein a first sheath and a first pressure block are respectively sleeved on the outside of the hose body, and a first bolt passes through both sides of the outer surface of the first pressure block, a first anti-loosening washer and a first nut are respectively sleeved on the outside of the first bolt, and a second sheath and a second pressure block are respectively sleeved on the outside of the first pressure block, wherein a second bolt passes through both sides of the outer surface of the second pressure block, and a second anti-loosening washer and a second nut are respectively sleeved on the outside of the second pressure block.

[0007] By adopting the above technical solution, during use, the second sheath protects the main body of the hose, acting as a substitute for the hose itself in preventing wear. Therefore, even if the second sheath is worn through, it is less likely to damage the main body of the hose, improving safety. Furthermore, the corrugated structure of the second sheath provides it with good flexibility and pressure-resistant cushioning capabilities. When the hose is bent or subjected to external pressure, it can absorb stress through its own deformation, reducing direct impact on the internal hose. Additionally, the modified TPU material itself possesses excellent flame-retardant properties, forming an additional flame-retardant wall on the outside of the hose, effectively preventing the spread of flames and meeting the fire safety requirements of hydraulic systems. Simultaneously, its smooth surface and material properties reduce frictional wear with the external environment. The overall structure's wear resistance is improved, extending the service life of the second sheath. Furthermore, by adding a first sheath between the second sheath and the hose body, external pressure is further buffered, and friction and wear between the second sheath and the hose body are reduced. The first sheath is a diamond-shaped mesh woven from modified TPU round filaments. The openwork design of the mesh reduces material usage, lowering overall weight and cost. The flame-retardant properties of the modified TPU round filaments match those of the second sheath, preventing it from igniting and becoming a flame propagation path. The woven mesh structure also has good elasticity, deforming synchronously with the bending and stretching of the hose body without restricting the hose's flexibility, ensuring normal use of the hose under complex working conditions.

[0008] Furthermore, the second sheath has a wavy cross-section and is made of TPU material modified with phosphorus-based or nitrogen-based flame retardants.

[0009] By adopting the above technical solution, the second sheath protects the main body of the hose, acting as a substitute for the hose body in the event of wear. Therefore, even if the second sheath is worn through, it is not likely to cause damage to the main body of the hose, thus improving safety. Furthermore, the corrugated structure of the second sheath gives it good flexibility and pressure-resistant buffering capacity. When the main body of the hose is bent or subjected to external pressure, it can absorb stress through its own deformation, reducing direct impact on the internal hose. In addition, the modified TPU material itself has excellent flame-retardant properties, forming an additional flame-retardant wall on the outside of the hose, which can effectively prevent the spread of flames and meet the fire safety requirements of the hydraulic system. At the same time, its smooth surface and material properties can reduce frictional wear with the external environment, improve the wear resistance of the overall structure, and extend the service life of the second sheath.

[0010] Furthermore, a gap is left between the second sheath and the first sheath.

[0011] By adopting the above technical solution, the gap provides a pre-deformation space for the second sheath. When the second sheath is subjected to radial pressure, it can first absorb part of the stress through the contraction or deformation of its own corrugated structure, and then transfer the remaining pressure to the inner tubing, forming a double pressure-resistant buffer. Compared with a tight-fitting design without gaps, this structure can reduce the instantaneous pressure directly borne by the tubing. Moreover, when the tubing body is bent, the outer second sheath can deform independently due to the gap, avoiding local stress concentration caused by rigid binding with the tubing body. Furthermore, the combination of the second sheath and the gap can reduce vibration transmission and noise radiation through air damping and the vibration absorption effect of the corrugated structure.

[0012] Furthermore, the first sheath is in the form of a diamond-shaped mesh, and the first sheath is woven from TPU round yarns modified with phosphorus-based flame retardants or nitrogen-based flame retardants.

[0013] By adopting the above technical solution, an additional first sheath is set between the second sheath and the hose body to further buffer external pressure and reduce friction and wear between the second sheath and the hose body. The first sheath is a diamond-shaped mesh woven from modified TPU round filaments. The hollow design of the mesh reduces material usage, lowering the overall weight and cost. The flame-retardant properties of the modified TPU round filaments match those of the second sheath, preventing the second sheath from igniting and becoming a flame propagation path. Furthermore, the woven mesh structure has good elasticity, allowing it to deform synchronously with the bending and stretching of the hose body without restricting the hose's flexibility, ensuring normal use of the hose under complex working conditions.

[0014] Furthermore, the first pressure block, the second pressure block, the first bolt, the first anti-loosening washer, the first nut, the second bolt, the second anti-loosening washer, and the second nut are all made of stainless steel.

[0015] By adopting the above technical solution, both the first and second pressure blocks are made of 304 or 316 stainless steel, which has high strength and corrosion resistance. Through the cooperation of the first bolt, the first anti-loosening washer, the first nut, the second bolt, the second anti-loosening washer, and the second nut, the second sheath can be firmly fixed to the outside of the hose body, preventing the second sheath from shifting or falling off during the operation of the hose. In addition, while serving as an inner ring support for the second sheath, the first pressure block can also hold the hose body tightly, making the connection between the hose body and the pagoda structure on the first quick connector and the second quick interface more compact, ensuring the stability of the structural connection.

[0016] Furthermore, the first pressure block is detachably connected to the hose body via a first bolt and a first nut, and the second pressure block is detachably connected to the first pressure block and the second sheath via a second bolt and a second nut.

[0017] By adopting the above technical solution, the workers put four first pressure blocks on the outside of the hose body, then put the first anti-loosening washer on the outside of the first bolt, and put the first nut into the first pressure block. Finally, the workers tighten the first bolt through both sides of the outer surface of the first pressure block, so that the first pressure block clamps the hose body. While the first pressure block serves as the inner ring support of the second sheath, it can also hold the hose body tightly. The workers put the second anti-loosening washer on the outside of the second bolt, and put the second nut into the second pressure block. Finally, the workers tighten the second bolt through both sides of the outer surface of the second pressure block, so that the second pressure block clamps the first pressure block and the second sheath.

[0018] Furthermore, a first quick connector is connected to the top end of the hose body, and a second quick connector is connected to the bottom end of the hose body.

[0019] By adopting the above technical solution, the hose body is also connected to a first quick connector and a second quick connector. The connection is mainly achieved by fastening the pagoda head of the quick connector. The first quick connector and the second quick connector are male and female connectors, respectively, or both are male or female connectors. Through these two quick connectors, it is possible to quickly connect with other hydraulic components to form a complete hydraulic circuit.

[0020] Furthermore, both the first and second anti-loosening washers are composed of flat washers and spring washers.

[0021] By adopting the above technical solution, the first anti-loosening washer and the second anti-loosening washer can prevent the bolts from loosening under vibration environment and ensure the reliability of the connection.

[0022] Furthermore, the main body of the hose is composed of an inner rubber layer, a reinforcing layer and an outer rubber layer arranged sequentially from the inside to the outside. The inner rubber layer is made of nitrile rubber with added phosphorus-based flame retardants or nitrogen-based flame retardants. The outer rubber layer is made of natural rubber or synthetic rubber. The reinforcing layer is made of polyester fiber or steel wire braiding.

[0023] By adopting the above technical solution, the inner rubber layer is made of nitrile rubber with added phosphorus-based or nitrogen-based flame retardants, which has excellent oil resistance and flame retardancy, can directly contact hydraulic oil and prevent internal fire; the reinforcing layer is made of polyester fiber or steel wire braiding, which can enhance the compressive strength and structural stability of the hose and meet the high pressure requirements of the hydraulic system; the outer rubber layer is made of natural rubber or synthetic rubber, which has good flexibility and wear resistance, providing basic protection for the main body of the hose.

[0024] In summary, the present invention has the following main advantages:

[0025] 1. This utility model, through the provision of a second sheath, protects the main body of the hose, acting as a substitute for the hose itself in the event of wear. Therefore, even if the second sheath is worn through, it is less likely to damage the main body of the hose, thus improving safety. Furthermore, the corrugated structure of the second sheath provides it with excellent flexibility and pressure-resistant buffering capacity. When the hose is bent or subjected to external pressure, it can absorb stress through its own deformation, reducing direct impact on the internal hose. Additionally, the modified TPU material itself possesses excellent flame-retardant properties, forming an additional flame-retardant wall on the outside of the hose, effectively preventing the spread of flames and meeting the fire safety requirements of hydraulic systems. Simultaneously, its smooth surface and material properties reduce frictional wear with the external environment, improving the overall wear resistance of the structure and extending the service life of the second sheath. This facilitates the protection of the hose main body, reducing the occurrence of damage to the hose itself and improving the stability of the hydraulic circuit.

[0026] 2. This utility model, through the setting of a first sheath, further buffers external pressure and reduces friction and wear between the second sheath and the hose body by additionally setting the first sheath between the second sheath and the hose body. The first sheath is a diamond-shaped mesh woven from modified TPU round filaments. The openwork design of the mesh reduces material usage, lowering the overall weight and cost. The flame-retardant properties of the modified TPU round filaments match those of the second sheath, preventing the second sheath from igniting and becoming a flame propagation path. Furthermore, the woven mesh structure has good elasticity, deforming synchronously with the bending and stretching of the hose body, without restricting the hose's flexibility, ensuring normal use of the hose under complex working conditions; further improving the protective effect.

[0027] 3. This utility model, through the setting of a first pressure block and a second pressure block, both made of 304 or 316 stainless steel, possesses high strength and corrosion resistance. Through the cooperation of a first bolt, a first anti-loosening washer, a first nut, and a second bolt, a second anti-loosening washer, and a second nut, the second sheath can be firmly fixed to the outside of the hose body, preventing displacement or detachment of the second sheath during hose operation. Furthermore, while serving as an inner ring support for the second sheath, the first pressure block can also grip the hose body, making the connection between the hose body and the pagoda structure on the first and second quick connectors more secure, ensuring the stability of the structural connection. The first and second anti-loosening washers effectively prevent bolts from loosening under vibration, ensuring connection reliability. This detachable connection method also facilitates the installation, replacement, and maintenance of the sheath. When the sheath is worn or damaged, it is not necessary to replace the entire hose; only the corresponding sheath needs to be replaced, reducing maintenance costs and resource waste. It also facilitates the replacement of damaged first or second sheaths. Attached Figure Description

[0028] Figure 1This is a schematic diagram of the structure of this utility model;

[0029] Figure 2 This is a schematic diagram of the main structure of the hose of this utility model;

[0030] Figure 3 This is a schematic diagram of the cross-sectional structure of the first pressing block of this utility model;

[0031] Figure 4 This is a schematic diagram of the first pressing block explosion structure of this utility model;

[0032] Figure 5 This is a schematic diagram of the explosion structure of the second pressure block of this utility model.

[0033] In the diagram: 1. Hose body; 2. First quick connector; 3. Second quick connector; 4. First sheath; 5. First pressure block; 6. Second sheath; 7. Second pressure block; 8. First bolt; 9. First anti-loosening washer; 10. First nut; 11. Second bolt; 12. Second anti-loosening washer; 13. Second nut. Detailed Implementation

[0034] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0035] The embodiments of this utility model will be described below based on its overall structure.

[0036] Example 1:

[0037] New type of quick-connect flame-retardant hydraulic rubber hose, such as Figure 1 , Figure 3 , Figure 4 and Figure 5As shown, the device includes a hose body 1, with a first sheath 4 and a first pressure block 5 respectively fitted onto the outside of the hose body 1. The first sheath 4 is in the shape of a diamond mesh and is woven from TPU round yarn modified with phosphorus-based or nitrogen-based flame retardants. First bolts 8 penetrate both sides of the outer surface of the first pressure block 5. First anti-loosening washers 9 and first nuts 10 are respectively fitted onto the outside of the first bolts 8. The first pressure block 5 is detachably connected to the hose body 1 via the first bolts 8 and the first nuts 10. A second sheath 6 and a second pressure block 7 are respectively fitted onto the outside of the first pressure block 5. The second sheath 6 has a wavy cross-section and is made of TPU material modified with phosphorus-based or nitrogen-based flame retardants. A gap is left between the second sheath 6 and the first sheath 4. During use, the second sheath 6 protects the hose body 1, acting as a substitute for the hose body 1 in the event of wear. Therefore, even if the second sheath 6 is worn through, it is unlikely to damage the hose body 1, thus improving safety. Furthermore, the corrugated structure of the second sheath 6 provides it with good flexibility and pressure-resistant cushioning capabilities. When the hose body 1 is bent or subjected to external pressure, it can absorb stress through its own deformation, reducing direct impact on the internal hose. Additionally, the modified TPU material itself possesses excellent flame-retardant properties, forming an additional flame-retardant wall on the outside of the hose, effectively preventing the spread of flames and meeting the fire safety requirements of hydraulic systems. Simultaneously, its smooth surface and material properties reduce frictional wear with the external environment, improving overall performance. The wear-resistant properties of the body structure extend the service life of the second sheath 6; and by additionally setting the first sheath 4 between the second sheath 6 and the hose body 1, external pressure is further buffered, and friction and wear between the second sheath 6 and the hose body 1 are reduced; the first sheath 4 is a diamond-shaped mesh woven from modified TPU round yarns, and the hollow design of the mesh reduces material usage, lowering the overall weight and cost; the flame-retardant properties of the modified TPU round yarns match those of the second sheath 6, preventing the second sheath 6 from igniting and becoming a flame transmission path, and the woven mesh structure has good elasticity, deforming synchronously with the bending and stretching of the hose body 1, without restricting the flexibility of the hose, ensuring the hose can withstand complex working conditions. Normal use; the second pressure block 7 has a second bolt 11 penetrating both sides of its outer surface, and a second anti-loosening washer 12 and a second nut 13 respectively sleeved on the outside. The first pressure block 5, the second pressure block 7, the first bolt 8, the first anti-loosening washer 9, the first nut 10, the second bolt 11, the second anti-loosening washer 12 and the second nut 13 are all made of stainless steel. The second pressure block 7 is detachably connected to the first pressure block 5 and the second sheath 6 through the second bolt 11 and the second nut 13. After the production of the hose body 1 is completed and the first quick connector 2 and the second quick connector 3 are installed, the workers first put the first sheath 4 and the second sheath 6 on the outside of the hose body 1 to ensure that the diamond grid structure of the first sheath 4 can evenly wrap the hose body 1.Next, the workers placed four first clamping blocks 5 on the outside of the hose body 1. Then, they attached the first anti-loosening washer 9 to the outside of the first bolt 8 and placed the first nut 10 into the first clamping block 5. Finally, they tightened the first bolt 8 through both sides of the outer surface of the first clamping block 5, clamping the hose body 1. While serving as an inner ring support for the second sheath 6, the first clamping block 5 also gripped the hose body 1, making the connection between the hose body 1 and the pagoda structure on the first quick connector 2 and the second quick interface more secure, ensuring the stability of the structural connection. If the second sheath 6 affected the assembly of the first bolt 8, the first anti-loosening washer 9, and the first nut 10, the workers pulled the second sheath 6 to compress it, moving one end of the second sheath 6 away from the first clamping block 5. After assembling the four first clamping blocks 5, the workers unfolded the second sheath 6, making both ends of the second sheath 6... The first end is fitted over the first pressure block 5, which serves as a support. Next, the worker fits the second pressure block 7 over the first pressure block 5, covering the edge of the second sheath 6. The shapes of the first pressure block 5, the second sheath 6, and the second pressure block 7 together form a clamping and physical blocking limit on the second sheath 6, effectively reducing the possibility of displacement or detachment at both ends of the second sheath 6. Then, the worker fits the second anti-loosening washer 12 over the second bolt 11 and inserts the second nut 13 into the second pressure block 7. Finally, the worker tightens the second bolt 11 through both sides of the outer surface of the second pressure block 7, clamping the first pressure block 5 and the second sheath 6 between them. When replacing the worn second sheath 6, simply remove the second bolt 11, the second pressure block 7, and the first pressure block 5 in sequence to replace the second sheath 6 and the first sheath 4.

[0038] See Figure 1 , Figure 2 , Figure 4 and Figure 5 In the above embodiment, the top end of the hose body 1 is connected to a first quick connector 2, and the bottom end of the hose body 1 is connected to a second quick connector 3. The connection is mainly achieved by fastening the pagoda head of the quick connector. The first quick connector 2 and the second quick connector 3 are male and female connectors, respectively, or both are male or female connectors. Through these two quick connectors, it is possible to quickly connect with other hydraulic components to form a complete hydraulic passage.

[0039] Example 2:

[0040] Based on the above embodiment one, the following settings are now adopted to increase structural stability.

[0041] See Figure 4 and Figure 5In the above embodiments, the first anti-loosening washer 9 and the second anti-loosening washer 12 are both composed of a flat washer and a spring washer. The first anti-loosening washer 9 and the second anti-loosening washer 12 can effectively prevent the bolt from loosening in a vibration environment and ensure the reliability of the connection.

[0042] Example 3:

[0043] Based on the above embodiment 1, in order to increase the strength of the hose body 1, the following settings are now implemented.

[0044] See Figure 2 In the above embodiments, the hose body is composed of an inner rubber layer, a reinforcing layer, and an outer rubber layer arranged sequentially from the inside out. The inner rubber layer is made of nitrile rubber with added phosphorus-based or nitrogen-based flame retardants, the outer rubber layer is made of natural rubber or synthetic rubber, and the reinforcing layer is woven from polyester fiber or steel wire. The inner rubber layer, made of nitrile rubber with added phosphorus-based or nitrogen-based flame retardants, has excellent oil resistance and flame retardancy, allowing direct contact with hydraulic oil and preventing internal ignition. The reinforcing layer, woven from polyester fiber or steel wire, enhances the hose's compressive strength and structural stability, meeting the high-pressure requirements of the hydraulic system. The outer rubber layer, made of natural rubber or synthetic rubber, has good flexibility and wear resistance, providing basic protection for the hose body 1.

[0045] The implementation principle of this utility model is as follows: First, the hose body 1 is the core load-bearing component of the entire device. The inner rubber layer is made of nitrile rubber with added phosphorus-based or nitrogen-based flame retardants, which has excellent oil resistance and flame retardancy, allowing direct contact with hydraulic oil and preventing internal fire. The reinforcing layer is woven from polyester fiber or steel wire, which can enhance the compressive strength and structural stability of the hose and meet the high pressure requirements of the hydraulic system. The outer rubber layer is made of natural rubber or synthetic rubber, which has good flexibility and wear resistance, providing basic protection for the hose body 1. The hose body 1 is also connected to a first quick connector 2 and a second quick connector 3. The connection is mainly achieved by tightening the pagoda head of the quick connector. The first quick connector 2 and the second quick connector 3 are male and female connectors, respectively, or both are male or female connectors. Through these two quick connectors, it is possible to quickly connect with other hydraulic components to form a complete hydraulic circuit.

[0046] After the hose body 1 is manufactured and the first quick connector 2 and the second quick connector 3 are installed, the workers first attach the first sheath 4 and the second sheath 6 to the outside of the hose body 1, ensuring that the diamond-shaped grid structure of the first sheath 4 can evenly wrap the hose body 1. Then, the workers attach the four first pressure blocks 5 to the outside of the hose body 1. Next, the workers attach the first anti-loosening washer 9 to the outside of the first bolt 8 and put the first nut 10 into the first pressure block 5. Finally, the workers tighten the first bolt 8 through both sides of the outer surface of the first pressure block 5, so that the first pressure block 5 clamps the hose body 1. While serving as the inner ring support of the second sheath 6, the first pressure block 5 can also hold the hose body 1 tightly, making the connection between the hose body 1 and the pagoda structure on the first quick connector 2 and the second quick connector more compact and ensuring the stability of the structural connection. If the second sheath 6 affects the assembly of the first bolt 8, the first anti-loosening washer 9 and the first nut 10, the workers pull the second sheath 6 to compress it, so that one end of the second sheath 6 is away from the first pressure block 5.

[0047] After assembling the four first pressure blocks 5, the workers unfold the second sheath 6 so that both ends of the second sheath 6 fit over the first pressure blocks 5, using the first pressure blocks 5 as support. Next, the workers place the four second pressure blocks 7 over the four first pressure blocks 5 respectively, covering the edges of the second sheath 6. Through the shapes of the first pressure blocks 5, the second sheath 6, and the second pressure blocks 7, the first pressure blocks 5 and the second pressure blocks 7 form a clamping limit and a physical blocking limit on the second sheath 6, effectively reducing the occurrence of displacement and detachment at both ends of the second sheath 6. Then, the workers attach the second anti-loosening washer 12 to the outside of the second bolt 11 and put the second nut 13 into the second pressure block 7. Finally, the workers pass the second bolt 11 through both sides of the outer surface of the second pressure block 7 and tighten it, so that the second pressure block 7 clamps the first pressure block 5 and the second sheath 6. When replacing the worn second sheath 6 in the future, it is only necessary to remove the second bolt 11, the second pressure block 7, and the first pressure block 5 in sequence to replace the second sheath 6 and the first sheath 4.

[0048] During use, the second sheath 6 protects the hose body 1, acting as a substitute for the hose body 1 in the event of wear. Therefore, even if the second sheath 6 is worn through, it is unlikely to damage the hose body 1, thus improving safety. Furthermore, the corrugated structure of the second sheath 6 provides it with good flexibility and pressure-resistant cushioning capabilities. When the hose body 1 is bent or subjected to external pressure, it can absorb stress through its own deformation, reducing direct impact on the internal hose. Additionally, the modified TPU material itself possesses excellent flame-retardant properties, forming an additional flame-retardant wall on the outside of the hose, effectively preventing the spread of flames and meeting the fire safety requirements of hydraulic systems. At the same time, its smooth surface and material properties reduce frictional wear with the external environment, enhancing the overall structural integrity. The wear-resistant properties extend the service life of the second sheath 6. Furthermore, by additionally setting the first sheath 4 between the second sheath 6 and the hose body 1, external pressure is further buffered, and friction and wear between the second sheath 6 and the hose body 1 are reduced. The first sheath 4 is a diamond-shaped mesh woven from modified TPU round filaments. The openwork design of the mesh reduces material usage, lowering the overall weight and cost. The flame-retardant properties of the modified TPU round filaments match those of the second sheath 6, preventing it from igniting and becoming a flame propagation path. The woven mesh structure also has good elasticity, allowing it to deform synchronously with the bending and stretching of the hose body 1, without restricting the hose's flexibility and ensuring normal use of the hose under complex working conditions.

[0049] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A novel quick-connect flame-retardant hydraulic rubber hose, comprising a hose body (1), characterized in that: The hose body (1) is fitted with a first sheath (4) and a first pressure block (5) respectively. The first pressure block (5) has a first bolt (8) through both sides of its outer surface. The first bolt (8) is fitted with a first anti-loosening washer (9) and a first nut (10) respectively. The first pressure block (5) is fitted with a second sheath (6) and a second pressure block (7) respectively. The second pressure block (7) has a second bolt (11) through both sides of its outer surface. The second anti-loosening washer (12) and the second nut (13) are fitted with the second bolt (11) respectively.

2. The novel quick-connect flame-retardant hydraulic rubber hose according to claim 1, characterized in that: The second sheath (6) has a wavy cross section and is made of TPU material modified with phosphorus-based flame retardant or nitrogen-based flame retardant.

3. The novel quick-connect flame-retardant hydraulic rubber hose according to claim 2, characterized in that: A gap is left between the second sheath (6) and the first sheath (4).

4. The novel quick-connect flame-retardant hydraulic rubber hose according to claim 3, characterized in that: The first sheath (4) is in the shape of a rhomboid mesh, and the first sheath (4) is woven from TPU round yarn modified with phosphorus flame retardant or nitrogen flame retardant.

5. The novel quick-connect flame-retardant hydraulic rubber hose according to claim 1, characterized in that: The first pressure block (5), the second pressure block (7), the first bolt (8), the first anti-loosening washer (9), the first nut (10), the second bolt (11), the second anti-loosening washer (12), and the second nut (13) are all made of stainless steel.

6. The novel quick-connect flame-retardant hydraulic rubber hose according to claim 5, characterized in that: The first pressure block (5) is detachably connected to the hose body (1) by the first bolt (8) and the first nut (10), and the second pressure block (7) is detachably connected to the first pressure block (5) and the second sheath (6) by the second bolt (11) and the second nut (13).

7. The novel quick-connect flame-retardant hydraulic rubber hose according to claim 1, characterized in that: The top end of the hose body (1) is connected to a first quick connector (2), and the bottom end of the hose body (1) is connected to a second quick connector (3).

8. The novel quick-connect flame-retardant hydraulic rubber hose according to claim 5, characterized in that: The first anti-loosening gasket (9) and the second anti-loosening gasket (12) are both composed of a flat gasket and a spring gasket.

9. The novel quick-connect flame-retardant hydraulic rubber hose according to claim 7, characterized in that: The main body of the hose consists of an inner rubber layer, a reinforcing layer and an outer rubber layer arranged sequentially from the inside out. The inner rubber layer is made of nitrile rubber with added phosphorus-based flame retardants or nitrogen-based flame retardants. The outer rubber layer is made of natural rubber or synthetic rubber, and the reinforcing layer is made of polyester fiber or steel wire braid.

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