Spiral surrounding type hydraulic rubber pipe depoling clamp

Abstract

The invention provides a spiral surrounding type hydraulic rubber pipe depoling clamp which effectively solves the problems that when an existing rubber depoling clamp is used for clamping the end of a rubber pipe, stress points are limited, provided clamping force is limited, the cross section of the rubber pipe is prone to deformation, and the rubber pipe has the large falling risk. According to the technical scheme, the device comprises a horizontal cylindrical body, a blind hole is formed in the right end of the body, a cylindrical shell capable of moving left and right is arranged in the blind hole, a spiral cavity is formed in the body, a spiral pipe connected with the cylindrical shell cavity is arranged at the left end of the cylindrical shell, and the left end of the body is communicated with a high-pressure water source; a water outlet is formed in the right end of the cylindrical shell; a first spiral protrusion is arranged on the outer side wall of the cylindrical shell, the right end of the body is sleeved with an outer barrel, a second spiral protrusion is arranged on the inner side wall of the outer barrel, and the outer edge diameter of the first spiral protrusion is larger than the inner edge diameter of the second spiral protrusion. When high-pressure water forces the cylindrical shell to move rightwards, the first spiral protrusion can be screwed into the second spiral protrusion along with rotation of the cylindrical shell.

Description

Technical Field

[0001] The invention relates to the technical field of production and processing of hydraulic hoses, in particular to a spirally encircling hydraulic hose core stripping fixture. Background Art

[0002] Hydraulic rubber hoses are usually removed by high-pressure water pushing. In the specific operation, one end of the hose is clamped and fixed first, and then the soft core is pushed to the other end of the hose by high-pressure water to achieve the purpose of removing the core. In the operation, when the hose end is clamped, the soft core is formed into the side wall of the hose, that is, the interaction between the soft core and the clamp makes the rubber hose end clamped and fixed, but when the soft core moves and detaches from the chuck, the hose end loses its internal support, and the clamping force of the chuck on the hose is less than the friction force of the soft core on the hose, causing the hose end to fall off and the removal of the core fails. In order to solve the above problems, in the prior art, the rubber tube core stripping chuck disclosed in patent document CN116968225B and the internal support type rubber tube core stripping chuck disclosed in CN114211720B both use a clamp to clamp the end of the rubber tube, and then achieve the purpose of clamping and fixing the end of the rubber tube. However, in use, their shortcomings are also quite obvious: although the above documents can clamp the rubber tube to a certain extent, the force points are multi-point contact, and the end of the rubber tube being clamped is locally stressed. During the core stripping process, the local stress will cause the cross section of the rubber tube to deform, and then there will be side leakage or even tearing of the side wall of the rubber tube. There is a greater risk of falling off, which is not conducive to the smooth progress of the core stripping work. In short, the clamping method of the existing chuck on the rubber tube needs to be further improved, and the stress environment of the end of the rubber tube needs to be further optimized.

[0003] A spiral encircling hydraulic hose core stripping clamp is proposed, which can utilize the cooperation between the threaded structures to achieve encircling clamping of the side wall of the hose end. The inner and outer walls of the hose end have sufficient clamping force to ensure that the force on the side wall of the rubber hose is balanced. It can provide sufficient and reliable clamping force for the core stripping work without damaging the rubber hose. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a spiral enveloping hydraulic hose core stripping clamp, which effectively solves the problems of the existing rubber core stripping clamp having limited force points and limited clamping force when clamping the end of the rubber tube, easy deformation of the cross section of the rubber tube, and a greater risk of the hose falling off.

[0005] The technical solution is as follows: it comprises a horizontal cylindrical main body, a blind hole is provided at the right end of the main body, a cylindrical shell which can move left and right is arranged in the blind hole, a spiral cavity is arranged inside the main body, a spiral tube connected to the cylindrical shell cavity is arranged at the left end of the cylindrical shell, the spiral tube cooperates with the spiral cavity, and the left end of the main body is connected with a high-pressure water source; a water outlet is provided at the right end of the cylindrical shell, and when the water outlet is closed, the high-pressure water can force the cylindrical shell and the spiral tube to move rightward, and the cylindrical shell rotates during this process; A first spiral protrusion is arranged on the outer wall of the cylindrical shell, an outer cylinder is mounted on the right end of the main body, a second spiral protrusion is arranged on the inner wall of the outer cylinder, and the outer edge diameter of the first spiral protrusion is larger than the inner edge diameter of the second spiral protrusion; when high-pressure water forces the cylindrical shell to move to the right, the first spiral protrusion can be screwed into the second spiral protrusion as the cylindrical shell rotates.

[0006] Furthermore, the outer cylinder is composed of two upper and lower arc-shaped plates, the left end of the arc-shaped plate is hinged to the outer wall of the main body; the outer sides of the right ends of the two arc-shaped plates are fixed together by bolt and nut structures.

[0007] Furthermore, the water outlet at the right end of the cylindrical shell is trumpet-shaped, and a blocking block is provided at the right end of the cylindrical shell. The blocking block is truncated cone-shaped and can block the water outlet. A tension spring is connected between the blocking block and the main body.

[0008] Furthermore, the water outlet is equipped with a one-way valve.

[0009] Furthermore, an arc-shaped rubber protrusion is fixed to the inner side of the right end of the arc-shaped plate, and the two arc-shaped rubber protrusions can form a complete circular ring structure, and the inner edge diameter of the circular ring structure is smaller than the inner edge diameter of the second spiral protrusion.

[0010] Furthermore, sealing strips are provided on the sides of the two arc-shaped plates. When the two arc-shaped plates are tightly fixed together, the sealing strips play a waterproof and sealing role.

[0011] Furthermore, a sealing ring is arranged on the outer side of the right end of the main body. When the two arc-shaped plates are buckled together to form an outer cylinder, the inner side wall of the arc-shaped plate and the outer side wall of the main body are sealed by the sealing ring.

[0012] Furthermore, the diameter of the right end of the cylindrical shell gradually decreases.

[0013] The structure of the present invention is ingenious, and the cooperation between the threaded structures can be utilized to realize the embracing clamping of the side wall of the hose end. The inner and outer walls of the hose end have sufficient clamping force to ensure that the force on the side wall of the rubber hose is balanced, and sufficient and reliable clamping force can be provided for the core stripping work without damaging the rubber hose. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional schematic diagram of the present invention.

[0015] Figure 2 It is a three-dimensional exploded diagram of the present invention.

[0016] Figure 3 It is the front view of the present invention.

[0017] Figure 4 It is a left view of the present invention.

[0018] Figure 5 It is the right view of the present invention.

[0019] Figure 6 It is a front cross-sectional view of the present invention.

[0020] Figure 7 When the present invention is used Figure 1 .

[0021] Figure 8 When the present invention is used Figure 2 .

[0022] Fig. 9 It is a structural diagram of the main body and the spiral cavity thereon in the present invention.

[0023] Fig.10 It is a structural diagram of the arc plate and the second spiral protrusion in the present invention.

[0024] Fig.11 It is a structural diagram of the cylindrical shell, the spiral tube thereon, and the first spiral protrusion in the present invention. DETAILED DESCRIPTION

[0025] The specific implementation modes of the present invention are further described in detail below with reference to the accompanying drawings.

[0026] Depend on Figures 1 to 11 The present invention comprises a horizontal cylindrical body 1, a blind hole 2 is provided at the right end of the body 1, a cylindrical shell 3 which can move left and right is arranged in the blind hole 2, a spiral cavity 4 is arranged inside the body 1, a spiral tube 5 connected to the cavity of the cylindrical shell 3 is arranged at the left end of the cylindrical shell 3, the spiral tube 5 cooperates with the spiral cavity 4, and the left end of the body 1 is connected to a high-pressure water source; a water outlet is provided at the right end of the cylindrical shell 3, and when the water outlet is closed, the high-pressure water can force the cylindrical shell 3 and the spiral tube 5 to move rightward, and the cylindrical shell 3 rotates during this process; A first spiral protrusion 6 is arranged on the outer wall of the cylindrical shell 3, an outer cylinder 7 is mounted on the right end of the main body 1, a second spiral protrusion 8 is arranged on the inner wall of the outer cylinder 7, and the outer edge diameter of the first spiral protrusion 6 is larger than the inner edge diameter of the second spiral protrusion 8; when the high-pressure water forces the cylindrical shell 3 to move to the right, as the cylindrical shell 3 rotates, the first spiral protrusion 6 can be screwed into the second spiral protrusion 8.

[0027] In order to facilitate the outer tube 7 to clamp the rubber tube and the soft core inside the rubber tube, the outer tube 7 is composed of two upper and lower arc plates 9, the left end of the arc plate 9 is hinged to the outer wall of the main body 1; the outer sides of the right ends of the two arc plates 9 are fixed together by bolt and nut structures 10.

[0028] In order to prevent high-pressure water from spraying out before the soft core is separated from the clamp, the water outlet at the right end of the cylindrical shell 3 is trumpet-shaped, and a blocking block 11 is provided at the right end of the cylindrical shell 3. The blocking block 11 is truncated cone-shaped and can block the water outlet. A tension spring is connected between the blocking block 11 and the main body 1.

[0029] In order to prevent the high-pressure water from flowing back, a one-way valve 12 is installed at the water outlet.

[0030] In order to ensure that the outer cylinder 7 composed of two arc-shaped plates 9 can clamp the rubber tube before the soft core completely detaches from the chuck, an arc-shaped rubber protrusion 13 is fixed to the inner side of the right end of the arc-shaped plate 9. The two arc-shaped rubber protrusions 13 can form a complete circular ring structure, and the inner edge diameter of the circular ring structure is smaller than the inner edge diameter of the second spiral protrusion 8.

[0031] In order to ensure the waterproof capability of the outer cylinder 7, sealing strips 14 are provided on the sides of the two arc-shaped plates 9. When the two arc-shaped plates 9 are tightly fixed together, the sealing strips 14 play a waterproof sealing role.

[0032] In order to ensure a waterproof seal between the outer tube 7 and the outer wall of the main body 1, a sealing ring 15 is provided on the outer side of the right end of the main body 1. When the two arc plates 9 are buckled together to form the outer tube 7, the inner wall of the arc plate 9 and the outer wall of the main body 1 are sealed by the sealing ring 15.

[0033] In order to facilitate the cylindrical shell 3 to enter the rubber tube cavity, the diameter of the right end of the cylindrical shell 3 gradually decreases.

[0034] It is worth noting that in the present invention, when the high-pressure water forces the cylindrical shell 3 to move to the right, the cylindrical shell 3 is also rotating due to the action of the spiral tube 5 and the spiral cavity 4 at the left end of the cylindrical shell 3, that is, the cylindrical shell 3 rotates while moving to the right, and the rotation of the cylindrical shell 3 also prompts the first spiral protrusion 6 to enter the rubber tube and support the inner wall of the rubber tube. At the same time, the first spiral protrusion 6 is screwed into the second spiral protrusion 8 and clamps the rubber tube. To achieve the above purpose, the lead and pitch of the first spiral protrusion 6, the second spiral protrusion 8, and the spiral tube 5 need to be kept consistent.

[0035] Last but not least, in the present invention, it is necessary to limit the travel of the cylindrical shell 3 so that the spiral tube 5 cannot be completely separated from the spiral chamber 4. There are many ways to achieve this goal, such as providing an annular protrusion on the outer side of the left end of the spiral tube 5 and the side wall of the right end of the spiral chamber 4, or connecting a rope between the left end of the cylindrical shell 3 and the bottom of the blind hole 2, etc. There are many ways, as long as the spiral tube 5 can be prevented from being completely separated from the spiral chamber 4.

[0036] When in use, the two arc plates 9 are opened and the right end of the cylindrical shell 3 is pressed against the end of the soft core, and then the two arc plates 9 are buckled and fixed. At this time, the rubber tube is clamped by the outer tube 7, just as Figure 7 In the state shown, the water outlet is blocked by the blocking block 11. When high-pressure water enters the spiral chamber 4 from the left end of the main body 1, the water pressure forces the spiral tube 5 and the cylindrical shell 3 to move to the right. When the cylindrical shell 3 moves to the right, the spiral tube 5 drives the cylindrical shell 3 to rotate, and the cylindrical shell 3 moves to the right against the soft core, and the first spiral protrusion 6 supports the inner wall of the rubber tube. At the same time, the first spiral protrusion 6 and the second spiral protrusion 8 engage with each other, and finally the rubber tube wall is clamped; then, under the action of water pressure, the high-pressure water pushes the blocking block 11 to the right through the water outlet, and finally enters the rubber tube, forcing the soft core to continue to move to the right. This state is just like Figure 8 shown.

[0037] In the present invention, the outer edge of the first spiral protrusion 6 and the inner edge of the second spiral protrusion 8 engage with each other to achieve an embracing clamping of the rubber tube. The force on all sides of the rubber tube is balanced to avoid damage to the rubber tube as much as possible, while also ensuring that the rubber tube has a sufficiently large clamping force to prevent it from falling off.

[0038] When the present invention clamps the rubber tube, the first spiral protrusion 6 and the second spiral protrusion 8 force the side wall of the rubber tube to be wavy, which not only forms a multi-layer waterproof sealing structure, but also forms a multi-layer embracing structure in the circumferential direction, providing a sufficiently large clamping force for the rubber tube and effectively preventing the rubber tube from falling off.

[0039] The structure of the present invention is ingenious, and the cooperation between the threaded structures can be utilized to realize the embracing clamping of the side wall of the hose end. The inner and outer walls of the hose end have sufficient clamping force to ensure that the force on the side wall of the rubber hose is balanced, and sufficient and reliable clamping force can be provided for the core stripping work without damaging the rubber hose.

Claims

1. A spiral encircling hydraulic hose core stripping fixture, characterized in that: The invention comprises a horizontal cylindrical body (1), a blind hole (2) is provided at the right end of the body (1), a cylindrical shell (3) which can move left and right is arranged in the blind hole (2), a spiral cavity (4) is arranged inside the body (1), a spiral tube (5) connected to the cavity of the cylindrical shell (3) is provided at the left end of the cylindrical shell (3), the spiral tube (5) cooperates with the spiral cavity (4), and the left end of the body (1) is connected to a high-pressure water source; a water outlet is provided at the right end of the cylindrical shell (3), and when the water outlet is closed, the high-pressure water can force the cylindrical shell (3) and the spiral tube (5) to move rightward, and during this process the cylindrical shell (3) rotates; The cylindrical shell (3) is provided with a first spiral protrusion (6) on its outer wall, the right end of the main body (1) is sleeved with an outer cylinder (7), the inner wall of the outer cylinder (7) is provided with a second spiral protrusion (8), the outer edge diameter of the first spiral protrusion (6) is larger than the inner edge diameter of the second spiral protrusion (8); when the high-pressure water forces the cylindrical shell (3) to move rightward, the first spiral protrusion (6) can be screwed into the second spiral protrusion (8) as the cylindrical shell (3) rotates.

2. The spiral encircling hydraulic hose core stripping fixture according to claim 1, characterized in that: The outer cylinder (7) is composed of two upper and lower arc-shaped plates (9), the left end of the arc-shaped plate (9) being hinged to the outer wall of the main body (1); the outer sides of the right ends of the two arc-shaped plates (9) are fixed together via bolt and nut structures (10).

3. The spiral encircling hydraulic hose core stripping fixture according to claim 2, characterized in that: The water outlet at the right end of the cylindrical shell (3) is in a trumpet shape. A blocking block (11) is provided at the right end of the cylindrical shell (3). The blocking block (11) is in a truncated cone shape. The blocking block (11) can block the water outlet. A tension spring is connected between the blocking block (11) and the main body (1).

4. A spiral encircling hydraulic hose core stripping fixture according to claim 2 or 3, characterized in that: The water outlet is equipped with a one-way valve (12).

5. The spiral encircling hydraulic hose core stripping fixture according to claim 2, characterized in that: An arc-shaped rubber protrusion (13) is fixed to the inner side of the right end of the arc-shaped plate (9), and the two arc-shaped rubber protrusions (13) can form a complete circular ring structure, and the inner edge diameter of the circular ring structure is smaller than the inner edge diameter of the second spiral protrusion (8).

6. A spiral encircling hydraulic hose core stripping fixture according to claim 2 or 5, characterized in that: Sealing strips (14) are provided on the sides of the two arc-shaped plates (9); when the two arc-shaped plates (9) are tightly fixed together, the sealing strips (14) play a waterproof and sealing role.

7. The spiral encircling hydraulic hose core stripping fixture according to claim 1, characterized in that: A sealing ring (15) is arranged on the outer side of the right end of the main body (1). When the two arc-shaped plates (9) are buckled together to form the outer cylinder (7), the inner wall of the arc-shaped plate (9) and the outer wall of the main body (1) are sealed by the sealing ring (15).

8. The spiral encircling hydraulic hose core stripping fixture according to claim 1, characterized in that: The diameter of the right end of the cylindrical shell (3) gradually decreases.

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