Core rod and outer sleeve of sealing joint

Abstract

The utility model relates to the technical field of sealing joints, and discloses a sealing joint core rod and outer sleeve which comprises a connecting seat, a first connecting head integrally machined on one side of the connecting seat, a connecting plug integrally machined at one end of the first connecting head, a sliding sleeve arranged between the connecting seat and the first connecting head, and an extrusion part arranged inside the sliding sleeve. Two sliding blocks are machined on the inner wall of the sliding sleeve, an anti-disengaging structure is arranged at one end of the interior of the sliding sleeve, a second connector is integrally machined at the other end of the connecting base, during connection, the inserting head is inserted into the rubber pipe, then the sliding sleeve is connected with the first connector, and the sliding sleeve can extrude and limit the portion, on the outer side of the inserting head, of the rubber pipe; and when the end part is subjected to buckling interference, the rubber tube is buckled in the annular groove, so that the anti-pull-out force is improved, and the situation that outer rubber needs to be stripped for connection is also avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing joints, and specifically relates to a sealing joint core rod and an outer sleeve used on a hydraulic support. Background Technique

[0002] At present, the inter-bracket liquid supply pipeline of a hydraulic support usually adopts an R15-51 hydraulic hose, which is a six-layer high-strength steel wire winding structure and can withstand a working pressure of 42 MPa and a burst pressure of 168 MPa. When connecting the current sealing joint core rod and the outer sleeve, it is necessary to strip a certain length of inner rubber and outer rubber at the end. However, it is easy to strip the outer rubber too long or too short, and it is not convenient to accurately control. If the outer rubber is stripped slightly longer, the steel wire is likely to be exposed when the rubber hose is bent, shortening the service life and causing the rubber hose to fail in advance; if the outer rubber is stripped slightly shorter, the end part is overstressed during the joint swaging, there is a safety hazard of joint pull-off, and it is also easy to slip off. Therefore, a sealing joint core rod and an outer sleeve are proposed. Content of the Utility Model

[0003] The purpose of the utility model is to provide a sealing joint core rod and an outer sleeve to solve the problems in the above background technique that when connecting the current joint core rod and the outer sleeve, it is necessary to strip a certain length of inner rubber and outer rubber at the end, and it is easy to strip the outer rubber too long or too short, which is not convenient for accurate control. If the outer rubber is stripped slightly longer, the steel wire is likely to be exposed when the rubber hose is bent, shortening the service life and causing the rubber hose to fail in advance; if the outer rubber is stripped slightly shorter, the end part is overstressed during the joint swaging, there is a safety hazard of joint pull-off, and it is also easy to slip off.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A sealing joint core rod and an outer sleeve, including a connection seat, one side of the connection seat is integrally processed with a first connection head, one end of the first connection head is integrally processed with an insertion joint, a sliding sleeve is arranged between the connection seat and the first connection head, an extrusion part is arranged inside the sliding sleeve, two sliding blocks are processed on the inner wall of the sliding sleeve, an anti-detachment structure is arranged at one end inside the sliding sleeve, and the other end of the connection seat is integrally processed with a second connection head.

[0005] Preferably, the extrusion part includes a first limit protrusion, the first limit protrusion is fixedly installed on the inner wall of the sliding sleeve, and a plurality of second limit protrusions are uniformly arranged on the inner wall of the sliding sleeve.

[0006] Preferably, a groove is opened on the outer side of the first connection head, and one end of the sliding sleeve is rotatably connected inside the groove.

[0007] Preferably, the anti-detachment structure includes a fixing plate, the fixing plate is buckled at one end inside the sliding sleeve, a plurality of elastic plates are uniformly arranged on one side of the fixing plate, and two sliding blocks are fixedly arranged on the outer side of the fixing plate and the sliding blocks are slidably installed on the inner wall of one end of the sliding sleeve.

[0008] Preferably, a damping chute is provided on the inner wall of one end of the sliding sleeve, and the slider is slidably installed inside the damping chute.

[0009] Preferably, the cross-section of the elastic plate is processed into a triangle and an arc is provided at one end of the elastic plate.

[0010] Compared with the prior art, the utility model adopts the above technical solutions and has the following technical effects:

[0011] By providing a connecting seat, a first connecting head, a socket, a sliding sleeve and a first limiting protrusion, when connecting a rubber hose, the socket is inserted into the rubber hose. With the socket inside the rubber hose, the sliding sleeve is then slid over the outside of the first connecting head and the socket. The sliding sleeve will clamp the rubber hose outside the socket. At the same time, the first limiting protrusion and the second limiting protrusion inside the sliding sleeve will also squeeze the rubber hose. When end clamping interference occurs, the rubber hose will be clamped inside the annular groove, thereby improving the anti-pulling force and also avoiding the need to strip the outer rubber for connection. Description of the Drawings

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

[0013] Figure 1 It is a schematic side view structure diagram of the utility model;

[0014] Figure 2 It is a schematic cross-sectional structure diagram of the utility model;

[0015] Figure 3 It is a schematic anti-disconnection structure diagram of the utility model.

[0016] Description of the reference numerals: 1, connecting seat; 2, first connecting head; 3, socket; 4, sliding sleeve; 5, first limiting protrusion; 6, second limiting protrusion; 7, annular groove; 8, fixing plate; 9, elastic plate; 10, slider; 11, second connecting head. Detailed Embodiments

[0017] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0018] It should be noted that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those who are familiar with this technology to understand and read, and are not used to limit the limiting conditions that can be implemented in this application. Therefore, they do not have technical essence. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that this application can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in this application.

[0019] Embodiment

[0020] In the prior art, when connecting the current sealing joint core rod and outer sleeve, it is necessary to strip a certain length of inner rubber and outer rubber at the end. However, it is easy to strip the outer rubber too long or too short, which is not convenient for precise control. If the outer rubber is stripped slightly longer, the steel wire is likely to be exposed when the rubber hose is bent, shortening the service life and causing the rubber hose to fail in advance; if the outer rubber is stripped slightly shorter, the end part is over-force when the joint is swaged, there is a safety hazard of joint pulling out, and at the same time, there is also an easy slippage problem.

[0021] Please refer to Figures 1-3 , the present utility model provides a technical solution: a sealing joint core rod and outer sleeve, including a connecting seat 1. One side of the connecting seat 1 is integrally processed with a first connecting head 2. One end of the first connecting head 2 is integrally processed with a plug connector 3. A sliding sleeve 4 is arranged between the connecting seat 1 and the first connecting head 2. An extrusion part is arranged inside the sliding sleeve 4. Two sliding blocks 10 are processed on the inner wall of the sliding sleeve 4. An anti-detachment structure is arranged at one end inside the sliding sleeve 4. The other end of the connecting seat 1 is integrally processed with a second connecting head 11. When connecting, insert the plug connector 3 into the inside of the rubber hose, and then connect the sliding sleeve 4 with the first connecting head 2. The sliding sleeve 4 will extrude and limit the rubber hose outside the plug connector 3. When the end part is over-swaged, the rubber hose will be buckled inside the annular groove 7, thereby improving the anti-pulling force and also avoiding the need to strip the outer rubber for connection.

[0022] The extrusion part includes a first limiting protrusion 5, and the first limiting protrusion 5 is fixedly installed on the inner wall of the sliding sleeve 4. A plurality of second limiting protrusions 6 are evenly arranged on the inner wall of the sliding sleeve 4. The plug connector 3 and the external rubber hose are swaged through the first limiting protrusion 5 and the second limiting protrusion 6 to improve the anti-pulling force and sealing performance.

[0023] A groove is provided on the outer side of the first connector 2 , and one end of the sliding sleeve 4 is rotatably connected inside the groove. The sliding sleeve 4 is buckled between the connecting seat 1 and the first connector 2 through the groove on the outer side of the first connector 2 .

[0024] The anti-slip structure includes a fixing plate 8, which is buckled at one end of the inner part of the sliding sleeve 4. A plurality of elastic plates 9 are evenly arranged on one side of the fixing plate 8. Two sliding blocks 10 are fixedly arranged on the outer side of the fixing plate 8 and the sliding blocks 10 are slidably installed on the inner wall of one end of the sliding sleeve 4. When connected, the fixing plate 8 is installed inside the sliding sleeve 4 through the sliding blocks 10. A plurality of elastic plates 9 are fixedly arranged on one side of the fixing plate 8. The elastic plates 9 will resist the external rubber hose, thereby improving the anti-slip force.

[0025] A damping groove is formed on the inner wall of one end of the sliding sleeve 4 , and the sliding block 10 is slidably installed inside the damping groove. The fixing plate 8 is rotatably installed on one end of the sliding sleeve 4 through the sliding block 10 .

[0026] The cross section of the elastic plate 9 is processed into a triangle and one end of the elastic plate 9 is provided with an arc. When connected, the elastic plate 9 will limit the rubber hose.

[0027] Working principle or structural principle, when connecting the hose, insert the plug connector 3 into the hose, the plug connector 3 is inside the hose, and then the fixing plate 8 is installed inside the sliding sleeve 4 through the slider 10, and a plurality of elastic plates 9 are fixedly arranged on one side of the fixing plate 8, and then the sliding sleeve 4 is slidably sleeved on the outside of the first connector 2 and the plug connector 3, the sliding sleeve 4 will buckle the hose on the outside of the plug connector 3, and at the same time, the first limiting protrusion 5 and the second limiting protrusion 6 inside the sliding sleeve 4 will also squeeze the hose, and when the end portion is buckled too much, the hose will buckle inside the annular groove 7, thereby improving the anti-pull-out force and avoiding the need to peel off the outer rubber for connection, and at the same time, one end of the elastic plate 9 outside the fixing plate 8 will also contact the outside of the hose, thereby further improving the anti-pull-out force.

[0028] Those skilled in the art will appreciate that the features described in the various embodiments and / or claims of the present invention may be combined and / or combined in various ways, even if such combinations and / or combinations are not explicitly described in the present invention. In particular, the features described in the various embodiments and / or claims of the present invention may be combined and / or combined in various ways without departing from the spirit and teachings of the present invention. All of these combinations and / or combinations fall within the scope of the present invention.

Claims

1. A sealing joint core rod and outer sleeve, comprising a connecting seat (1), characterized in that: A first connector (2) is integrally formed on one side of the connection seat (1), a plug connector (3) is integrally formed on one end of the first connector (2), a sliding sleeve (4) is provided between the connection seat (1) and the first connector (2), an extrusion portion is provided inside the sliding sleeve (4), two sliding blocks (10) are processed on the inner wall of the sliding sleeve (4), an anti-drop structure is provided at one end of the interior of the sliding sleeve (4), and a second connector (11) is integrally formed on the other end of the connection seat (1).

2. A sealing joint core rod and sleeve according to claim 1, characterized in that: The extrusion portion comprises a first limiting protrusion (5), the first limiting protrusion (5) being fixedly mounted on the inner wall of the sliding sleeve (4), and a plurality of second limiting protrusions (6) being evenly arranged on the inner wall of the sliding sleeve (4).

3. A sealing joint core rod and sleeve according to claim 1, characterized in that: A groove is provided on the outer side of the first connecting head (2), and one end of the sliding sleeve (4) is rotatably connected inside the groove.

4. A sealing joint core rod and sleeve according to claim 1, characterized in that: The anti-slip structure comprises a fixing plate (8), the fixing plate (8) being buckled on one end of the interior of the sliding sleeve (4), a plurality of elastic plates (9) being evenly arranged on one side of the fixing plate (8), two sliding blocks (10) being fixedly arranged on the outer side of the fixing plate (8), and the sliding blocks (10) being slidably mounted on the inner wall of one end of the sliding sleeve (4).

5. A sealing joint core rod and sleeve according to claim 2, characterized in that: A damping sliding groove is provided on the inner wall of one end of the sliding sleeve (4), and the sliding block (10) is slidably mounted inside the damping sliding groove.

6. A sealing joint core rod and sleeve according to claim 4, characterized in that: The cross section of the elastic plate (9) is processed into a triangle and one end of the elastic plate (9) is provided with an arc.

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