Anti-falling pneumatic connector

Abstract

The utility model relates to an anti-falling pneumatic connector which comprises a connector shell, a connecting seat is arranged in a first end, a vent hole is formed in the connecting seat, a valve rod is arranged below the vent hole, a guide sleeve is sleeved on the valve rod, an air inlet cavity is arranged at the top of the valve rod, an air guide hole is formed in the air inlet cavity, and an air guide path is arranged in the valve rod. An outlet of the gas guide path is located in the side face of the valve rod and surrounded by the guide sleeve, a gas storage cavity is formed in the side face, making contact with the valve rod, of the guide sleeve, and when gas enters the vent hole, gas flows through the gas guide path and the outlet from the gas guide hole to the gas storage cavity, and the guide sleeve is pressed on the inner wall of the connector shell. The air guide path and the air guide hole are formed in the valve rod, an air source is led into the air storage cavity formed in the guide sleeve through the air guide hole and the air guide path, the guide sleeve is tightly pressed on the inner wall of the connector shell under the action of air pressure, and the reliability, the stability and the sealing performance of the connector are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to pneumatic joint technical field, concretely relates to a kind of anti-falling pneumatic joint. BACKGROUND

[0002] The working principle of cylinder anti-falling joint mainly depends on its built-in valve structure and special design to ensure that the cylinder does not accidentally drop when the gas source is lost, thereby improving production safety and stability.

[0003] As a key component for connecting gas pipes and transmitting gas, the performance of cylinder anti-falling joint directly affects the stability and safety of the entire pneumatic system. Traditional pneumatic joints have some shortcomings in structural design, such as the firmness of gas pipe connection. When subjected to external pulling or system vibration, the gas pipe is easily detached from the joint, which may cause serious safety accidents in some highly safety-requiring occasions, such as aerial work equipment and large-scale automated production lines. At the same time, traditional pneumatic joints also need to be improved in terms of sealing, flexibility of gas on-off control, and other aspects, and cannot well meet the needs of modern industry for efficient, safe, and stable operation. Therefore, it is of great practical significance to develop a pneumatic joint that can effectively prevent gas pipe falling, has good sealing performance, and reliable gas on-off control function. SUMMARY

[0004] The utility model aims at providing a kind of anti-falling pneumatic joint to solve the problems of poor gas pipe connection stability, insufficient sealing and not intelligent enough gas on-off control of existing pneumatic joint, and improve the safety and reliability of pneumatic system in various application scenarios.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions:

[0006] The utility model provides an anti -falling pneumatic joint, its characterized in being including joint casing, first gas hole, second gas hole and third gas hole, first gas hole is located the first end of joint casing, second gas hole and third gas hole are located the second end and third end of joint casing respectively, the connecting seat is provided in the first end, the air hole is provided in the connecting seat, the air hole below is provided with valve rod, the second end and third end are used to connect the gas pipe, the flow guide chamber is provided between the second end and third end, the valve core that is used with valve rod cooperation is provided in the flow guide chamber, when the air hole admits air, the valve rod pushes the valve core and removes so that the gas pipe in the second end and third end is communicated, when the air hole breaks air, the valve core resets under the action of spring, wherein the valve rod is set with guide sleeve, the top of valve rod is provided with air inlet chamber, the air inlet chamber is provided with air guide hole, the valve rod is provided with air guide path, the outlet of air guide path is located the side of valve rod, the outlet is surrounded by guide sleeve, the side that guide sleeve contacts valve rod is provided with air storage chamber, when the air hole admits air, gas flows from air guide hole, air guide path, outlet to air storage chamber, and the guide sleeve is pressed tightly on the inner wall of joint casing.

[0007] The utility model further sets up, the valve rod includes head, middle part and tail, the air inlet chamber is located in the head, the air guide hole is located in the tail end of the air inlet chamber, the air guide path and the outlet are located in the middle part, the air guide sleeve is located in the middle part, the tail acts on the valve core contact or separate.

[0008] The utility model further sets up, the head forms the sealing groove to the center, Y type sealing ring is provided in the sealing groove.

[0009] The utility model further sets up, the valve core is connected with valve seat, the center of valve seat is provided with the slot for the valve core movement, the valve core includes mobile seat and mobile rod, the mobile seat is wrapped the end of mobile rod, and forms the sealing protruding on mobile seat and is used for blocking the flow -through port of flow guide chamber, so that the gas pipe between the second end and third end is not communicated.

[0010] The utility model further sets up, the second end and third end are provided with the tripping sleeve, the snap spring, the first buckle, the second buckle and the sealing ring, the first buckle is cooperated with the tripping sleeve, the slot for installing the snap spring is formed on the first buckle, the first buckle is cooperated with the second buckle and is arranged, the second buckle is cooperated with the sealing ring and is arranged.

[0011] The utility model further sets up, both sides of the flow guide cavity form the communicating port one and the communicating port two with second end communication respectively, form the through port between the communicating one and the communicating port two, the communicating port two is located the third end one side, and its export place is provided with first sleeve for fixing trachea, installs the slot mouth on the side surface of first sleeve, the slot mouth is provided with the fixed link of flexible material, be provided with the steel ball on the fixed link.

[0012] The utility model further sets up, the second sleeve is provided with the second sleeve in the sealing ring, the slot mouth is provided with the fixed link of flexible material on the side surface of second sleeve, be provided with the steel ball on the fixed link.

[0013] The utility model further sets up, the clamp spring includes the installation part of the circumferential direction arrangement and the effect part of the effect of trachea, the installation part is outwardly inclined and sets up from the clamp spring center, the effect part is towards the center of the clamp spring and sets up, the region for trachea passes through is formed between the end face of effect part, and each installation part is connected with two effect parts.

[0014] The utility model further sets up, the effect part of the clamp spring is connected with tracheal sleeve, the side surface of tracheal sleeve is opened along the length direction of rectangular slot, the effect part of the clamp spring is connected in the rectangular slot and extends to tracheal sleeve, when trachea installs, trachea passes through tracheal sleeve, and the effect part is in tracheal sleeve and acts on the surface of trachea.

[0015] The utility model further sets up, reset spring is arranged between the valve seat and the moving rod, or reset spring is arranged in the slot mouth and acts on the bottom of moving rod.

[0016] The utility model discloses the beneficial effect has: based on the problem of valve rod in the movement process in prior art: for example, the long -term friction between valve rod and inner wall leads to the decline of sealing performance, the utility model in through setting up the guide sleeve first can guide valve rod in the movement process, and when valve rod moves in the guide sleeve, because of the existence of guide sleeve, avoid the contact between valve rod and joint inner wall surface, reduce the abrasion, and the existence of guide sleeve can also guarantee that valve rod does not appear deviation when moving, secondly, the utility model still sets up the air -guide path on valve rod, and the air -guide hole is introduced to the air -storage cavity formed on the guide sleeve with gas source through the air -guide hole, the air -guide path, under the action of gas pressure, the guide sleeve is pressed tightly on the inner wall of joint shell, improves its reliability, stability and sealing performance, further improves the reliability and stability when valve rod moves. ACCURACY OF DRAWINGS

[0017] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and serve to explain the application without imposing undue limitation thereon. In the drawings:

[0018] Figure 1 It is a perspective view of the utility model embodiment.

[0019] Figure 2 It is a schematic view of the internal structure of the utility model embodiment.

[0020] Figure 3 It is a schematic view of the structure of the valve seat and the valve core of the utility model embodiment.

[0021] Figure 4 It is a schematic view of the structure of the snap spring and the tracheal sleeve of the utility model embodiment.

[0022] Reference signs:

[0023] 10, joint shell; 20, first air connection hole; 30, second air connection hole; 40, third air connection hole; 50, first end; 60, second end; 70, third end; 80, connecting seat; 801, air hole; 90, valve rod; 901, head; 902, middle part; 903, tail; 100, flow guide cavity; 110, valve core; 1101, moving seat; 1102, moving rod; 120, guide sleeve; 130, air inlet cavity; 140, air guide hole; 150, air guide path; 160, outlet; 170, air storage cavity; 180, sealing groove; 190, Y-shaped sealing ring; 200, valve seat; 210, notch; 220, sealing protrusion; 230, flow-through opening; 240, tripping sleeve; 250, snap spring; 260, first clasp; 270, second clasp; 280, sealing ring; 290, communication opening one; 300, communication opening two; 310, installation notch; 320, steel ball; 330, snap spring; 3301, installation part; 3302, acting part; 340, tracheal sleeve; 3401, rectangular groove; 350, reset spring; 360, first sleeve; 370, second sleeve; DETAILED DESCRIPTION

[0024] The embodiments of the application will be described in detail below with the accompanying drawings and embodiments, so that the implementation process of how the application applies technical means to solve technical problems and achieves technical effects can be fully understood and implemented.

[0025] As Figures 1-4 shown, the utility model provides a kind of anti-falling pneumatic joint, including joint shell 10, joint shell 10 is made of aluminium alloy material, with good strength and corrosion resistance;Or it is made of polyamide material, with good mechanical strength, wear resistance and self-lubricating property

[0026] In this embodiment, the joint shell 10 has a first air connection hole 20, a second air connection hole 30 and a third air connection hole 40, the first air connection hole 20 is located at the first end 50 of the joint shell 10, the second air connection hole 30 and the third air connection hole 40 are respectively located at the second end 60 and the third end 70 of the joint shell 10, a connecting seat 80 is arranged in the first end 50 for connecting other accessories or air pipes; an air passage 801 is arranged in the connecting seat 80, a valve rod 90 is arranged below the air passage 801, the second end 60 and the third end 70 are used for connecting air pipes, a flow guide cavity 100 is arranged between the second end 60 and the third end 70, a valve core 110 cooperating with the valve rod 90 is arranged in the flow guide cavity 100, when the air passage 801 is inhaled, the valve rod 90 pushes the valve core 110 to move to make the air pipes in the second end 60 and the third end 70 communicate, when the air passage 801 is cut off, the valve core 110 resets under the action of the spring, wherein a guide sleeve 120 is sleeved on the valve rod 90, an air inlet cavity 130 is arranged at the top of the valve rod 90, a gas guide hole 140 is arranged in the air inlet cavity 130, a gas guide path 150 is arranged in the valve rod 90, the outlet 160 of the gas guide path 150 is located on the side of the valve rod 90, the outlet 160 is surrounded by the guide sleeve 120, a recess is formed on the side of the guide sleeve 120 in contact with the valve rod 90 to form a gas storage cavity 170, when the air passage 801 inhales, the gas flows from the gas guide hole 140 to the gas storage cavity 170 through the gas guide path 150 and the outlet 160, and the guide sleeve 120 is pressed tightly on the inner wall of the joint shell 10.

[0027] Based on the problems existing in the valve rod 90 in the prior art during movement, for example, long-term friction between the valve rod 90 and the inner wall causes the sealing performance to decrease, in the utility model, the valve rod 90 can be guided during movement by arranging the guide sleeve 120, and when the valve rod 90 moves in the guide sleeve 120, the contact between the valve rod 90 and the inner wall of the joint is avoided due to the existence of the guide sleeve 120, the wear is reduced, and the existence of the guide sleeve 120 can also ensure that the valve rod 90 does not deviate during movement; secondly, the gas guide path 150 and the gas guide hole 140 are arranged on the valve rod 90 in the utility model, the gas source is introduced into the gas storage cavity 170 formed on the guide sleeve 120 through the gas guide hole 140 and the gas guide path 150, the guide sleeve 120 is pressed tightly on the inner wall of the joint shell 10 by the action of the gas pressure, the reliability, stability and sealing performance are improved, the function of compensating sealing is realized, and the reliability and stability of the valve rod 90 during movement are further improved. The guide sleeve 120 is made of polytetrafluoroethylene material which is wear-resistant.

[0028] The valve stem 90 includes a head 901, a middle part 902 and a tail 903, the air inlet cavity 130 is located in the head 901, the air guide hole 140 is located at the end of the air inlet cavity 130, the air guide path 150 and the outlet 160 are located in the middle part 902, the air guide sleeve is located in the middle part 902, and the tail 903 acts on the contact or separation of the valve core 110. The head 901 is formed with a sealing groove 180 to the center thereof, and the sealing groove 180 is provided with a Y-shaped sealing ring 190, when the air inlet cavity 130 inhales, the gas acts on the side wall of the air inlet cavity 130, and then the side wall is acted on by the Y-shaped sealing ring 190, so that the side wall can be attached to the valve stem 90 to realize better sealing performance.

[0029] In the utility model, the valve core 110 is connected with the valve seat 200, the center of the valve seat 200 is provided with the notch 210 for the movement of the valve core 110, the valve core 110 includes the movement seat 1101 and the movement rod 1102, the movement seat 1101 wraps the end of the movement rod 1102, and the movement seat 1101 is formed with the sealing protrusion 220 for blocking the flow-through port 230 of the flow guide cavity 100, so that the air pipe between the second end 60 and the third end 70 is not communicated, when the valve stem 90 moves to the side of the movement seat 1101, the flow-through port 230 is opened, so that the air pipe between the second end 60 and the third end 70 is communicated.

[0030] In addition, in the firmness of the air pipe connection, when being pulled by external force or being vibrated, the air pipe is easy to fall off from the joint, which may cause serious safety accidents in some occasions with extremely high safety requirements, such as aerial work equipment, large-scale automatic production line and the like, therefore, the utility model adopts the following technical scheme:

[0031] The second end 60 and the third end 70 of the joint shell 10 are provided with the tripping sleeve 240, the snap spring 330250, the first buckle 260, the second buckle 270 and the sealing ring 280, the first buckle 260 is matched with the tripping sleeve 240, the notch 210 for installing the snap spring 330250 is formed on the first buckle 260, the first buckle 260 is matched with the second buckle 270, and the second buckle 270 is matched with the sealing ring 280.

[0032] On the basis of the above technical solutions, the embodiment further forms a communication port one 290 and a communication port two 300 in communication with the second end 60 on both sides of the flow guide cavity 100, forms a flow-through port 230 between the communication port one and the communication port two 300, and the communication port two 300 is located on the side of the third end 70, and a first sleeve 360 for fixing the trachea is arranged at the outlet 160 of the communication port two 300, a mounting slot 310 210 is arranged on the side surface of the first sleeve 360, a fixing rod made of flexible material is arranged in the slot 210, and a steel ball 320 is arranged on the fixing rod. The flexible material is flexible plastic, such as polyurethane.

[0033] A second sleeve 370 is arranged in the sealing ring 280 at the communication port one 290, a slot 210 is arranged on the side surface of the second sleeve 370, a fixing rod made of flexible material is arranged in the slot 210, and a steel ball 320 is arranged on the fixing rod. The flexible material is flexible plastic, such as polyurethane.

[0034] The snap spring 330 250 includes a mounting portion 3301 arranged in the circumferential direction and an acting portion 3302 acting on the trachea, the mounting portion 3301 is arranged outwardly and obliquely from the center of the snap spring 330 250, the acting portion 3302 is arranged towards the center of the snap spring 330 250, a region for the trachea to pass through is formed between the end faces of the acting portion 3302, and each mounting portion 3301 is connected with two acting portions 3302.

[0035] In addition, in actual use, the trachea needs to be fixed when entering the second end 60 or the third end 70, the acting portion 3302 of the snap spring 330 250 is connected with a trachea sleeve 340, a rectangular slot 3401 along the length direction of the trachea sleeve 340 is arranged on the side surface of the trachea sleeve 340, the acting portion 3302 of the snap spring 330 250 is clamped in the rectangular slot 3401 and extends into the trachea sleeve 340, when the trachea is installed, the trachea passes through the trachea sleeve 340, the acting portion 3302 acts on the surface of the trachea in the trachea sleeve 340, and reliable fixation of the trachea is achieved.

[0036] The reset spring 350 is arranged between the valve seat 200 and the moving rod 1102, or the reset spring 350 is arranged in the slot 210 and acts on the bottom of the moving rod 1102. The selection is made according to actual needs.

[0037] As used in the specification and claims, some terms can have special meanings. Those of skill in the art will understand that one or more devices have been referred to by multiple names in the specification. The specification and claims should not be controlled by differences in nomenclature, but rather by the functional differences between the components. As used throughout the specification and claims, "comprising" is to be interpreted as an open term meaning "including, but not limited to," and the like. "Approximately" means within an acceptable error range for the numbers used in the technical field and by those of ordinary skill in the art, which permits some leeway for variation and / or error in a given technical field.

[0038] It is to be understood that the terms "including", "comprising", "consisting" and "consisting essentially of" or any variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises, has, includes, or consists of any feature recited herein is not limited to the exclusion of any other features unless specifically recited. An element proceeded by "comprises... a", "has... a", "includes... a", or "consisting essentially of" does not, without further recitation, preclude the existence of additional elements or

[0039] The above description illustrates and describes the only preferred embodiments of the present application. However, it is to be understood that the application is not limited to the above-described and illustrated embodiments, and that modifications and variations are possible without departing from the spirit and scope of the application as defined by the appended claims. Changes and modifications within the scope of the application can be made by those of ordinary skill in the art, and it is intended to include all such changes and modifications within the scope of the application.

Claims

1. An anti-falling pneumatic joint, characterized in that, The utility model provides a joint shell, the joint shell has first gas hole, second gas hole and third gas hole, first gas hole is located in the first end of joint shell, second gas hole and third gas hole are located in the second end and third end of joint shell respectively, the connecting seat is provided in the first end, the air hole is provided in the connecting seat, the valve rod is provided below the air hole, the second end and third end are used for connecting the trachea, the flow guide cavity is provided between the second end and third end, the valve core is provided in the flow guide cavity and is matched with the valve rod, when the air hole is inhaled, the valve rod pushes the valve core and moves so that the trachea in the second end and third end is communicated, when the air hole is disconnected, the valve core resets under the action of spring, wherein the valve rod is sleeved with the guide sleeve, the top of valve rod is provided with the air inlet cavity, the air inlet cavity is provided with the air guide hole, the valve rod is provided with the air guide path, the outlet of air guide path is located in the side of valve rod, the outlet is surrounded by the guide sleeve, the side of guide sleeve and valve rod contact is provided with the air storage cavity, when the air hole is inhaled, the gas flows from the air guide hole, the air guide path, the outlet to the air storage cavity, and the guide sleeve is pressed on the inner wall of joint shell, the reset spring is arranged between the valve seat and the moving rod, or the reset spring is arranged in the notch and acts on the bottom of moving rod.

2. An air piston according to claim 1, wherein, The valve rod includes a head portion, a middle portion, and a tail portion. The air inlet cavity is located in the head portion, the air guide hole is located at the end of the air inlet cavity, the air guide path and the outlet are located in the middle portion, and the air guide sleeve is located in the middle portion. The tail portion acts on the valve core to contact or separate.

3. A fall arrest pneumatic coupling according to claim 2, wherein, The head portion is formed with a sealing groove to the center thereof, and the sealing groove is provided with a Y-shaped sealing ring.

4. An air piston according to claim 1, wherein, The valve core is connected with a valve seat, the center of the valve seat is provided with a notch for the movement of the valve core, the valve core includes a moving seat and a moving rod, the end of the moving rod is wrapped by the moving seat, and the moving seat is formed with a sealing protrusion for blocking the flow-through port of the flow guide cavity, so that the trachea between the second end and the third end is not communicated.

5. A fall arrest pneumatic coupling according to claim 1, wherein, The second end and the third end are each provided with a tripping sleeve, a snap spring, a first buckle, a second buckle, and a sealing ring. The first buckle is matched with the tripping sleeve, the first buckle is formed with a notch for mounting the snap spring, the first buckle is matched with the second buckle, and the second buckle is matched with the sealing ring.

6. An air piston according to claim 1, wherein, The two sides of the flow guide cavity are respectively formed with a communication port one and a communication port two communicated with the second end, a flow-through port is formed between the communication port one and the communication port two, the communication port two is located on one side of the third end, and a first sleeve for fixing the trachea is arranged at the outlet of the communication port two. A mounting notch is formed on the side surface of the first sleeve, a fixing rod made of flexible material is arranged in the notch, and a steel ball is arranged on the fixing rod.

7. A fall arrest pneumatic coupling according to claim 6, wherein, A second sleeve is arranged in the sealing ring at the communication port two, a notch is formed on the side surface of the second sleeve, a fixing rod made of flexible material is arranged in the notch, and a steel ball is arranged on the fixing rod.

8. A fall arrest pneumatic coupling according to claim 5, wherein, The clamping spring comprises installation parts arranged along the circumferential direction and acting parts acting on the trachea, the installation parts are arranged outwardly and obliquely from the center of the clamping spring, the acting parts are arranged towards the center of the clamping spring, the area for the trachea passing through is formed between the end faces of the acting parts, and each installation part is connected with two acting parts.

9. A fall arrest pneumatic coupling according to claim 8, wherein, The acting part of the clamping spring is connected with a trachea sleeve, the side face of the trachea sleeve is provided with a rectangular slot along the length direction, the acting part of the clamping spring is clamped in the rectangular slot and extends into the trachea sleeve, when the trachea is installed, the trachea passes through the trachea sleeve, and the acting part acts on the surface of the trachea in the trachea sleeve.

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