Hydraulic hose assembly capable of preventing connection from loosening and liquid leakage

Abstract

The invention discloses a connection loosening and liquid leakage preventing hydraulic hose assembly, and relates to the technical field of hydraulic hoses, the connection loosening and liquid leakage preventing hydraulic hose assembly comprises a rotating seat, a connecting sleeve seat is installed on the outer ring of the rotating seat in the height direction, a hydraulic hose assembly is fixedly connected to the inner ring of the connecting sleeve seat, and a connecting shaft is connected to the rear end of the rotating seat; the rear end of the connecting shaft is connected with a mounting sleeve seat, and a steering positioning mechanism is connected between the rotating seat and the mounting sleeve seat. The rotating base and the hydraulic hose assembly can be connected through the connecting sleeve base, the hydraulic hose assembly can effectively conduct self-repairing work of tiny damage, and the rotating base is rotationally connected with the mounting sleeve base through the connecting shaft so that the connecting direction of the hydraulic hose assembly can be conveniently adjusted; and positioning can be achieved in cooperation with the steering positioning mechanism after adjustment, shaking is prevented, and the installation sleeve base and the inner connecting base can be stably connected through the arrangement of the connecting positioning mechanism.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulic hoses, and specifically to a hydraulic hose assembly with anti-loosening and anti-leakage connections. Background Art

[0002] Currently, the field of application of hydraulic technology is very extensive. In the process of implementing hydraulic technology, pressure transmission is achieved through hydraulic oil, and hydraulic hoses are required to transmit the hydraulic oil needed in the hydraulic process. Therefore, the hydraulic hose assembly is an essential part of hydraulic technology.

[0003] However, there are still certain defects in the existing hydraulic hose assemblies during use; For example, a rubber hydraulic hose assembly proposed in the patent application No. CN202420498022.4. In view of the problem that during the use and installation of the existing hose, the hose will inevitably rub on the ground, the outer side of the hose cannot be protected, and the outer side of the hose is easily worn, resulting in a reduced service life of the hose, the following solution is proposed. It includes a rubber hydraulic hose main body. One end of the rubber hydraulic hose main body is fixedly provided with a first installation head, and an external thread is provided on the outer side of the first installation head. The other end of the rubber hydraulic hose main body is fixedly sleeved with a resisting ring. One end of the rubber hydraulic hose main body is movably sleeved with a second installation head. Through the protection mechanism, the rubber hydraulic hose main body can be effectively protected, avoiding direct contact between the rubber hydraulic hose main body and the ground, and extending the service life of the rubber hydraulic hose main body. Through the wear-resistant mechanism, the contact area between the protection pipe and the ground can be reduced, improving wear resistance. In the actual use process, there are still the following problems: This rubber hydraulic hose assembly protects the outer circle of the rubber hydraulic pipe main body through the protection pipe and the convex strips, thereby improving the wear resistance and protection effect of this rubber hydraulic hose assembly. However, during the use of the hydraulic hose, cracks are likely to occur on the surface, and when cracked, it is likely to cause the phenomenon of hydraulic oil leakage. However, the existing rubber hydraulic hose assembly is not easily detected when there are fine damages, which is likely to cause a large amount of leakage of hydraulic oil. At the same time, when there are small damages, the whole needs to be replaced, which is not convenient for self-repair and reduces the use effect; After the installation of this rubber hydraulic hose assembly, it is not convenient to adjust the connection angle. Only the soft performance of itself can be used to adjust the connection direction. Such an adjustment method is likely to cause cracks during the bending process, affecting the use effect. At the same time, when connecting this rubber hydraulic hose assembly, only a single-layer sealing ring is used to achieve connection sealing, which is likely to lead to poor sealing effect at the connection and the phenomenon of leakage, reducing the connection sealing effect of this rubber hydraulic hose assembly.

[0004] In view of this, in-depth research has been carried out on the above problems, and thus this case has emerged.

[0005] In view of the above problems, an innovative design is carried out on the basis of the original hydraulic hose assembly that prevents loosening and leakage of connections. Summary of the Invention

[0006] The purpose of the present invention is to provide a hydraulic hose assembly that prevents loosening and leakage of connections, so as to solve the problems of inconvenience for self-repair, inconvenience for connection direction adjustment, and reduction of connection sealing performance proposed in the above background technology.

[0007] To achieve the above purpose, the present invention provides the following technical solution: A hydraulic hose assembly that prevents loosening and leakage of connections, including a rotating seat, A connecting sleeve seat is installed at the outer ring height of the rotating seat, and a hydraulic hose assembly is fixedly connected to the inner ring of the connecting sleeve seat; A connecting shaft is connected to the rear end of the rotating seat, an installation sleeve seat is connected to the rear end of the connecting shaft, and a steering positioning mechanism is connected between the rotating seat and the installation sleeve seat; An inner connecting seat is inserted into the inner ring of the rear end of the installation sleeve seat, a connecting disc is fixedly connected to the rear end of the inner connecting seat, an installation plate is fixedly installed at the rear end of the connecting disc, and a connection positioning mechanism is connected between the installation sleeve seat and the connecting disc; A fitting plate is fixedly sleeved on the outer ring of the rear end of the installation sleeve seat, a sealing groove is opened on the front side of the connecting disc, a first sealing ring is movably fitted inside the sealing groove, the front side of the first sealing ring is fixedly connected to the rear side of the fitting plate, a positioning ring is fixedly embedded inside the installation sleeve seat, and a second sealing ring is fixedly connected to the inner ring of the positioning ring; An expansion sealing mechanism is connected inside the first sealing ring and the second sealing ring.

[0008] Preferably, the hydraulic hose assembly includes an outer protection tube fixedly installed in the inner ring of the connecting sleeve seat, partition membranes are installed at equal intervals inside the inner ring of the outer protection tube, an inner through tube is fixedly connected to the inner ring of the partition membranes, and a placement groove is formed in the gap between the outer protection tube, the partition membranes and the inner through tube.

[0009] By adopting the above technical solution, when the outer protection tube is damaged, the repair liquid in the corresponding placement groove will penetrate into the gap and self-repair the crack, improving the self-repair effect of the hydraulic hose assembly that prevents loosening and leakage of connections.

[0010] Preferably, the steering positioning mechanism includes a positioning block fixedly installed on the outer ring of the rotating seat, a sliding groove is opened inside the positioning block, a plugging rod slides through the inside of the sliding groove, a control cap is fixedly connected to the front end of the plugging rod, and a first spring is sleeved on the outer ring of the plugging rod between the control cap and the positioning block. The plugging rod and the control cap form a telescopic structure with the positioning block through the first spring.

[0011] Preferably, the steering positioning mechanism further includes a fixing plate fixedly installed on the outer ring of the front end of the mounting socket. Insertion slots are equiangularly formed on the inner side of the fixing plate, and the insertion slots and the insertion rods form a movable clamping structure.

[0012] Preferably, the steering positioning mechanism further includes connecting seats symmetrically installed on the outer ring of the control cap. A positioning slot is formed inside the end of the connecting seat away from the control cap. A positioning rod penetrates through the positioning slot. The rear end of the positioning rod is fixedly connected to a positioning block, and the connecting seat is in limiting sliding connection with the positioning rod through the positioning slot.

[0013] With the above technical solution, it is convenient for the rotating seat to rotate at the front end of the mounting socket through the connecting shaft, so as to adjust the installation angle of the hydraulic hose assembly, enabling the hydraulic hose assembly to perform connection work in multiple connection directions. The steering positioning mechanism can relatively position the rotating seat and the mounting socket after the angle adjustment, avoiding the shaking of the rotating seat and the hydraulic hose assembly after adjustment, and improving the anti-loosening effect and the diversity of connection directions of the hydraulic hose assembly.

[0014] Preferably, the connection positioning mechanism includes a limiting seat fixedly installed on the front side of the connecting plate. A limiting slot is formed inside the limiting seat. Fixing rods are symmetrically installed inside the limiting slot. A control plate is slidably sleeved on the outer circle of the fixing rods. A second spring is sleeved on the fixing rods between the control plate and the side wall of the limiting slot. A clamping block is fixedly installed on the outer side of the rear end of the control plate.

[0015] Preferably, the connection positioning mechanism further includes a clamping seat fixedly installed on the outer ring of the mounting socket. The clamping seat and the clamping block form a movable clamping structure.

[0016] With the above technical solution, it is convenient to position the socket connection between the mounting socket and the inner connection seat through the connection positioning mechanism, thereby simplifying the docking operation steps of the hydraulic hose assembly with anti-loosening and anti-leakage, improving the convenience of installation operation, and at the same time improving the convenience of disassembly and maintenance work.

[0017] Preferably, the expansion sealing mechanism includes a first connecting head inserted in front of the first sealing ring. The first connecting head is connected through the fitting plate. A second connecting head is inserted into the second sealing ring. The second connecting head is connected through the positioning ring. A connecting pipe is fixedly connected to the connecting ends of the first connecting head and the second connecting head.

[0018] Preferably, the expansion sealing mechanism further includes mounting seats symmetrically installed on the outer ring of the mounting sleeve seat. A piston tube is fixedly installed inside the mounting seats. A support seat is fixedly installed inside the rear end inner ring of the piston tube. A movable rod slidably penetrates through the middle of the support seat. A contact head is fixedly connected to the rear end of the movable rod. A piston plate is fixedly connected to the rear end of the movable rod. The piston plate is slidably connected with the piston tube. A third spring is sleeved outside the movable rod between the support seat and the piston plate. A communication valve is embedded and installed at the front top of the piston tube. The communication valve is fixedly connected with a connecting pipe.

[0019] Preferably, the movable rod and the piston plate form a limit telescopic structure with the support seat through the third spring, and the communication valve connects the piston tube and the connecting pipe.

[0020] By adopting the above technical solution, during the process of inserting the mounting sleeve seat into the inner connecting seat, it is convenient to drive the piston movement of the expansion sealing mechanism in a linkage manner, so that the gas inside the expansion sealing mechanism is squeezed and conveyed into the first sealing ring and the second sealing ring. After expansion, the first sealing ring and the second sealing ring are respectively in close contact with the sealing groove and the front end of the inner connecting seat to achieve double sealing, improving the sealing effect and anti-leakage effect of the hydraulic hose assembly.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: The hydraulic hose assembly for preventing connection loosening and leakage can connect the rotating seat and the hydraulic hose assembly through the connecting sleeve seat. The hydraulic hose assembly can effectively perform self-repair work for minor damages. The rotating seat is rotatably connected to the mounting sleeve seat through the connecting shaft, which is convenient for adjusting the connection direction of the hydraulic hose assembly and can be positioned in cooperation with the steering positioning mechanism after adjustment to prevent shaking. The connection positioning mechanism is convenient for firmly connecting the mounting sleeve seat and the inner connecting seat, and cooperates with the expansion sealing mechanism, the first sealing ring and the second sealing ring to achieve expansion sealing at the connection, improving the connection sealing performance. The specific content is as follows: A repair liquid is placed inside the placement groove in the hydraulic hose assembly. When a small crack occurs in the outer protective tube corresponding to a certain section of the placement groove, the repair liquid inside the placement groove will seep out from the crack to achieve self-repair of the crack, improving the self-repair effect of the hydraulic hose assembly for preventing connection loosening and leakage. The rotating seat can rotate at the front end of the mounting sleeve seat through the connecting shaft, so as to adjust the angle of the hydraulic hose assembly, which is beneficial for the hydraulic hose assembly to perform connection work in different directions. The setting of the steering positioning mechanism can relatively limit and position between the rotating seat and the mounting sleeve seat after angle adjustment, avoiding shaking at the rotating part and improving the anti-loosening effect of the hydraulic hose assembly. The setting of the connection positioning mechanism can position the socket installation of the installation socket and the inner connection socket, so as to realize the quick docking installation of the hydraulic hose assembly and improve the convenience of the installation operation; When connecting the installation socket and the inner connection socket, the first sealing ring will be inserted into the inside of the sealing groove, and the second sealing ring will be sleeved on the front end of the inner connection socket. Furthermore, during installation, the expansion sealing mechanism will convey the internal gas into the first sealing ring and the second sealing ring, which is beneficial to the first sealing ring and the second sealing ring being tightly fitted and sealed with the sealing groove and the front end of the inner connection socket respectively, improving the sealing and anti-leakage effects of the hydraulic hose assembly. Brief Description of the Drawings

[0022] Figure 1 It is a schematic side view structure diagram of the present invention; Figure 2 It is a schematic side sectional structure diagram of the hydraulic hose assembly of the present invention; Figure 3 It is a schematic exploded structure diagram of the rotating seat, the connecting shaft and the installation socket of the present invention; Figure 4 It is a schematic side sectional structure diagram of the steering positioning mechanism of the present invention; Figure 5 It is a schematic exploded structure diagram of the installation socket and the inner connection socket of the present invention; Figure 6 It is a schematic side sectional structure diagram of the connection positioning mechanism of the present invention; Figure 7 It is a schematic distribution structure diagram of the first sealing ring and the second sealing ring of the present invention; Figure 8 It is a schematic side sectional structure diagram of the first sealing ring and the second sealing ring of the present invention; Figure 9 It is a schematic side view structure diagram of the expansion sealing mechanism of the present invention; Figure 10 It is a schematic side sectional structure diagram of the expansion sealing mechanism of the present invention.

[0023] In the figure: 1, rotating seat; 2, connecting sleeve seat; 3, outer protective tube; 4, separation membrane; 5, inner through pipe; 6, placement groove; 7, connecting shaft; 8, mounting sleeve seat; 9, positioning block; 10, slide groove; 11, plug-in rod; 12, control cap; 13, first spring; 14, fixing plate; 15, plug-in groove; 16, connecting seat; 17, positioning groove; 18, positioning rod; 19, fitting plate; 20, inner seat; 21, connecting plate; 22, mounting plate; 23, limit seat; 24. Limiting groove; 25. Fixing rod; 26. Control board; 27. Second spring; 28. Engaging block; 29. ​​Engaging seat; 30. Sealing groove; 31. First sealing ring; 32. Positioning ring; 33. Second sealing ring; 34. First connector; 35. Second connector; 36. Connecting pipe; 37. Mounting seat; 38. Piston tube; 39. Support seat; 40. Movable rod; 41. Abutment head; 42. Piston plate; 43. Third spring; 44. Connecting valve. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] See also Figures 1 - 10 The present invention provides a technical solution: a hydraulic hose assembly for connecting and preventing loosening and leakage, comprising a rotating seat 1, a connecting sleeve seat 2 is installed at a high height on the outer ring of the rotating seat 1, a hydraulic hose assembly is fixedly connected to the inner ring of the connecting sleeve seat 2, and the hydraulic hose assembly comprises an outer protective tube 3 fixedly installed on the inner ring of the connecting sleeve seat 2, a separation membrane 4 is installed at equal intervals on the inner ring of the outer protective tube 3, an inner through tube 5 is fixedly connected to the inner ring of the separation membrane 4, and a placement groove 6 is formed in the gap between the outer protective tube 3, the separation membrane 4 and the inner through tube 5; The design of the above structure enables the setting of the outer protective tube 3 to effectively protect the outer circle of the inner tube 5, and the setting of the separation membrane 4 can divide the space between the outer protective tube 3 and the inner tube 5 into placement grooves 6 distributed at equal intervals, and the interior of the placement grooves 6 is injected with a repair liquid. Due to the liquid properties of the repair liquid, the impact suffered by the outer protective tube 3 can be effectively buffered, and when the outer protective tube 3 is damaged, the repair liquid inside the placement groove 6 can penetrate into the interior of the gap to self-repair the crack, thereby improving the self-repair effect and protection effect of the hydraulic hose assembly with a connection that prevents loosening and leakage.

[0026] A connecting shaft 7 is connected to the rear end of the rotating seat 1, and an installation sleeve seat 8 is connected to the rear end of the connecting shaft 7. A steering positioning mechanism is connected between the rotating seat 1 and the installation sleeve seat 8. The steering positioning mechanism includes a positioning block 9 fixedly installed on the outer ring of the rotating seat 1. A sliding groove 10 is formed inside the positioning block 9. A plugging rod 11 is slidably penetrated through the inside of the sliding groove 10. A control cap 12 is fixedly connected to the front end of the plugging rod 11. A first spring 13 is sleeved on the outer circle of the plugging rod 11 between the control cap 12 and the positioning block 9. The plugging rod 11 and the control cap 12 form a telescopic structure with the positioning block 9 through the first spring 13. The steering positioning mechanism further includes a fixed disk 14 fixedly installed on the outer circle of the front end of the installation sleeve seat 8. Plugging grooves 15 are equiangularly formed inside the inner side of the fixed disk 14. The plugging grooves 15 and the plugging rod 11 form a movable clamping structure. The steering positioning mechanism further includes connecting seats 16 symmetrically installed on the outer circle of the control cap 12. A positioning groove 17 is formed inside the end of the connecting seat 16 away from the control cap 12. A positioning rod 18 is penetrated through the inside of the positioning groove 17. The rear end of the positioning rod 18 is fixedly connected to the positioning block 9. The connecting seat 16 is connected with the positioning rod 18 in a limited sliding manner through the positioning groove 17; With the design of the above structure, when it is necessary to adjust the connection direction of the hydraulic hose assembly, by rotating the rotating seat 1, it cooperates with the connecting shaft 7 to rotate at the front end of the installation sleeve seat 8, and then the hydraulic hose assembly can be driven to rotate to realize the adjustment of the connection direction. When the directions are aligned, by the pulling of the first spring 13 on the control cap 12 and the plugging rod 11, the plugging rod 11 slides inside the positioning block 9 through the sliding groove 10 until the rear end of the plugging rod 11 forms a clamping with the corresponding plugging groove 15 on the fixed disk 14. At this time, the relative position between the rotating seat 1 and the installation sleeve seat 8 after the angle adjustment can be limited and positioned. Before adjusting the angle of the rotating seat 1, it is necessary to manually pull the control cap 12 to drive the plugging rod 11 to contract and separate from the currently clamped plugging groove 15 before the rotation adjustment can be realized; When the control cap 12 and the plugging rod 11 move, they will drive the connecting seats 16 on both sides to slide on the outer circle of the positioning rod 18 in cooperation with the positioning grooves 17, which is convenient for the positioning rod 18 to limit the telescoping of the connecting seat 16, the control cap 12 and the plugging rod 11, and ensures the stability of the steering positioning mechanism.

[0027] The inner ring at the rear end of the mounting socket 8 is inserted with an inner connection seat 20. A connection disc 21 is fixedly connected to the rear end of the inner connection seat 20. A mounting plate 22 is fixedly installed at the rear end of the connection disc 21. A connection positioning mechanism is connected between the mounting socket 8 and the connection disc 21. The connection positioning mechanism includes a limit seat 23 fixedly installed on the front side of the connection disc 21. A limit groove 24 is formed inside the limit seat 23. Fixed rods 25 are symmetrically installed inside the limit groove 24. A control plate 26 is slidably sleeved on the outer circle of the fixed rod 25. A second spring 27 is sleeved on the fixed rod 25 between the control plate 26 and the side wall of the limit groove 24. A clamping block 28 is fixedly installed on the outer side of the rear end of the control plate 26. The connection positioning mechanism further includes a clamping seat 29 fixedly installed on the outer circle of the mounting socket 8. The clamping seat 29 and the clamping block 28 form a movable clamping structure; The design of the above structure enables that when the mounting socket 8 is sleeved on the outer circle of the inner connection seat 20, it will drive the clamping seat 29 to be sleeved on the outer circle of the limit seat 23, and during the process of moving and sleeving, it will squeeze the clamping block 28, so that the clamping block 28 drives the control plate 26 to slide inside the limit groove 24 and on the outer circle of the fixed rod 25, and will squeeze the second spring 27. When the clamping seat 29 is sleeved to the rear end of the limit seat 23, the compressed second spring 27 will push the control plate 26 and the clamping block 28 to reset, so that the clamping block 28 can form a misaligned clamping with the clamping seat 29. At this time, the inner connection seat 20 and the mounting socket 8 can be stably connected and positioned. Among them, the symmetrically arranged fixed rods 25 can limit the expansion and contraction of the control plate 26 and the clamping block 28 to ensure the stability of the expansion and contraction; During disassembly, by squeezing the clamping seat 29, it is made to shrink into the limit groove 24. At this time, the misaligned clamping between the clamping block 28 and the clamping seat 29 can be released, so as to release the limit positioning between the mounting socket 8 and the inner connection seat 20 to achieve disassembly.

[0028] The outer ring of the rear end of the mounting sleeve 8 is fixedly sleeved with the bonding plate 19, and a sealing groove 30 is opened on the front side of the connecting plate 21. The first sealing ring 31 is movably fitted inside the sealing groove 30. The front side of the first sealing ring 31 is fixedly connected to the rear side of the bonding plate 19. A positioning ring 32 is fixedly inlaid inside the mounting sleeve 8. The inner ring of the positioning ring 32 is fixedly connected with the second sealing ring 33. The first sealing ring 31 and the second sealing ring 33 are connected to the inside of an expansion sealing mechanism. The expansion sealing mechanism includes a first connector 34 inserted in the front side of the first sealing ring 31, the first connector 34 is connected to the bonding plate 19 through, the second connector 35 is inserted into the inside of the second sealing ring 33, the second connector 35 is connected to the positioning ring 32 through, and the connecting end of the first connector 34 and the second connector 35 is fixedly connected to a connecting pipe 36 The expansion sealing mechanism also includes a mounting seat 37 symmetrically mounted on the outer ring of the mounting sleeve 8, a piston tube 38 is fixedly mounted on the inner side of the mounting seat 37, a support seat 39 is fixedly mounted on the inner ring of the rear end of the piston tube 38, a movable rod 40 is slidably penetrated through the middle of the support seat 39, a contact head 41 is fixedly connected to the rear end of the movable rod 40, a piston plate 42 is fixedly connected to the rear end of the movable rod 40, the piston plate 42 is slidably connected to the piston tube 38, a third spring 43 is sleeved on the outer ring of the movable rod 40 between the support seat 39 and the piston plate 42, the movable rod 40 and the piston plate 42 form a limited telescopic structure with the support seat 39 through the third spring 43, a connecting valve 44 is inlaid on the top of the front end of the piston tube 38, the connecting valve 44 is fixedly connected to the connecting pipe 36, and the connecting valve 44 connects the piston tube 38 and the connecting pipe 36; The design of the above structure ensures that during the process of plugging the mounting sleeve 8 and the internal seat 20, the rear end contact head 41 will first contact the connecting disk 21. As the mounting sleeve 8 continues to move and plug, the contact head 41 will be blocked by the connecting disk 21 and will drive the movable rod 40 to slide inside the support seat 39, and will drive the rear end piston plate 42 to slide inside the piston tube 38. At this time, the gas inside the piston tube 38 will be squeezed by the piston plate 42 and will be transported to the inside of the connecting pipe 36 through the connecting valve 44, and will be transported to the inside of the first sealing ring 31 and the second sealing ring 33 through the first connecting head 34 and the second connecting head 35 respectively. At this time, the first sealing ring 31 and the second sealing ring 33 will expand. After the first sealing ring 31 expands, it will fit tightly with the sealing groove 30, and after the second sealing ring 33 expands, it will fit tightly with the front end of the internal seat 20, so that the connection between the internal seat 20 and the mounting sleeve 8 can be double-sealed to improve the sealing and anti-leakage effect.

[0029] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic hose assembly for preventing loosening and leakage, comprising a rotating seat (1), characterized in that: A connecting sleeve (2) is mounted at the outer ring height of the rotating seat (1), and a hydraulic hose assembly is fixedly connected to the inner ring of the connecting sleeve (2); The rear end of the rotating seat (1) is connected to a connecting shaft (7), the rear end of the connecting shaft (7) is connected to a mounting sleeve (8), and a steering positioning mechanism is connected between the rotating seat (1) and the mounting sleeve (8); An inner seat (20) is inserted into the inner ring of the rear end of the mounting sleeve (8), a connecting plate (21) is fixedly connected to the rear end of the connecting seat (20), a mounting plate (22) is fixedly mounted to the rear end of the connecting plate (21), and a connecting positioning mechanism is connected between the mounting sleeve (8) and the connecting plate (21); The outer ring of the rear end of the mounting sleeve (8) is fixedly sleeved with a bonding plate (19); a sealing groove (30) is provided on the front side of the connecting plate (21); a first sealing ring (31) is movably fitted inside the sealing groove (30); the front side of the first sealing ring (31) is fixedly connected to the rear side of the bonding plate (19); a positioning ring (32) is fixedly embedded inside the mounting sleeve (8); and a second sealing ring (33) is fixedly connected to the inner ring of the positioning ring (32); An expansion sealing mechanism is connected inside the first sealing ring (31) and the second sealing ring (33).

2. A hydraulic hose assembly for preventing loosening and leakage according to claim 1, characterized in that: The hydraulic hose assembly comprises an outer protective tube (3) fixedly mounted on the inner ring of a connecting sleeve (2), the inner ring of the outer protective tube (3) being provided with separation membranes (4) at equal intervals, the inner ring of the separation membrane (4) being fixedly connected to an inner through tube (5), and a placement groove (6) being formed in the gap between the outer protective tube (3), the separation membrane (4) and the inner through tube (5).

3. The hydraulic hose assembly for preventing loosening and leakage of connection according to claim 1, characterized in that: The steering positioning mechanism comprises a positioning block (9) fixedly mounted on the outer ring of a rotating seat (1), a slide groove (10) being provided inside the positioning block (9), a plug-in rod (11) slidingly passing through the inside of the slide groove (10), a control cap (12) being fixedly connected to the front end of the plug-in rod (11), a first spring (13) being sleeved on the outer ring of the plug-in rod (11) between the control cap (12) and the positioning block (9), and the plug-in rod (11) and the control cap (12) forming a telescopic structure with the positioning block (9) via the first spring (13).

4. A hydraulic hose assembly for preventing loosening and leakage according to claim 3, characterized in that: The steering positioning mechanism also includes a fixing plate (14) fixedly mounted on the front end outer ring of the mounting sleeve (8), the fixing plate (14) having plug-in grooves (15) formed at equal angles on the inner side thereof, the plug-in grooves (15) and the plug-in rod (11) forming a movable engaging structure.

5. The hydraulic hose assembly for preventing loosening and leakage of connection according to claim 4, characterized in that: The steering positioning mechanism further comprises a connecting seat (16) symmetrically mounted on the outer ring of the control cap (12); a positioning groove (17) is provided inside the end of the connecting seat (16) away from the control cap (12); a positioning rod (18) penetrates the inside of the positioning groove (17); a rear end of the positioning rod (18) is fixedly connected to the positioning block (9); and the connecting seat (16) is slidably connected to the positioning rod (18) via the positioning groove (17).

6. The hydraulic hose assembly for preventing loosening and leakage of connection according to claim 1, characterized in that: The connection positioning mechanism comprises a limit seat (23) fixedly mounted on the front side of the connection plate (21), a limit slot (24) being provided inside the limit seat (23), a fixing rod (25) being symmetrically mounted inside the limit slot (24), an outer ring sliding sleeve of the fixing rod (25) being provided with a control plate (26), a second spring (27) being sleeved on the fixing rod (25) between the control plate (26) and the side wall of the limit slot (24), and a locking block (28) being fixedly mounted on the outer side of the rear end of the control plate (26).

7. The hydraulic hose assembly for preventing loosening and leakage of connection according to claim 6, characterized in that: The connection and positioning mechanism also includes a snap-fit ​​seat (29) fixedly mounted on the outer ring of the mounting sleeve (8), and the snap-fit ​​seat (29) and the snap-fit ​​block (28) form a movable snap-fit ​​structure.

8. The hydraulic hose assembly for preventing loosening and leakage of connection according to claim 1, characterized in that: The expansion sealing mechanism comprises a first connector (34) inserted in front of a first sealing ring (31), the first connector (34) being connected to a bonding plate (19) through a connection, a second connector (35) being inserted into the interior of the second sealing ring (33), the second connector (35) being connected to a positioning ring (32), and a connecting pipe (36) being fixedly connected to the connecting ends of the first connector (34) and the second connector (35).

9. The hydraulic hose assembly for preventing loosening and leakage of connection according to claim 8, characterized in that: The expansion sealing mechanism also includes a mounting seat (37) symmetrically mounted on the outer ring of the mounting sleeve (8), a piston tube (38) is fixedly mounted on the inner side of the mounting seat (37), a support seat (39) is fixedly mounted on the inner ring of the rear end of the piston tube (38), a movable rod (40) is slidably penetrated through the middle of the support seat (39), a contact head (41) is fixedly connected to the rear end of the movable rod (40), a piston plate (42) is fixedly connected to the rear end of the movable rod (40), the piston plate (42) is slidably connected to the piston tube (38), a third spring (43) is sleeved on the outer ring of the movable rod (40) between the support seat (39) and the piston plate (42), a connecting valve (44) is inlaid and mounted on the top of the front end of the piston tube (38), and the connecting valve (44) is fixedly connected to the connecting pipe (36).

10. A hydraulic hose assembly for preventing loosening and leakage according to claim 9, characterized in that: The movable rod (40) and the piston plate (42) form a limited telescopic structure with the support seat (39) via a third spring (43), and the connecting valve (44) connects the piston tube (38) and the connecting tube (36).

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