Space-saving floating joint

Abstract

The utility model discloses a space-saving type floating joint, which belongs to the technical field of air cylinder joints and comprises a main body shell, a floating rod is movably inserted into the top end of the main body shell, a limiting ring is detachably connected in the main body shell, a joint cover is detachably connected to the bottom end of the main body shell, and the joint cover is positioned on the lower side of the limiting ring. The top end of the connector cover is detachably connected with a hemispherical steel ball, the hemispherical steel ball is located on the inner side of the limiting ring, the bottom of the floating rod is movably hinged between the limiting ring and the hemispherical steel ball, the top end of the main body shell is fixedly connected with a dustproof ring, and the floating rod movably penetrates through the dustproof ring; the floating joint aims to solve the problems that in the prior art, most floating joints are too long in overall size and can occupy a large installation space, during pressure bearing, a limiting assembly at the bottom is stressed and is prone to damage, the pressure bearing effect is poor, in addition, the limiting assembly needs to be assembled with a main body shell, dislocation is prone to occurring in the assembling process, and the cost is low. And the floating effect of the floating rod in the main body shell is hindered.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of cylinder joint, more specifically, to a space-saving floating joint. BACKGROUND

[0002] The floating joint is a kind of key components widely used in industrial field, one end is connected driving shaft (mainly cylinder), one end is connected driven member, mainly used to absorb the eccentricity of cylinder piston rod and driven body, to reduce the relative precision between cylinder and driven body.

[0003] At present, floating joint is usually composed of main body shell, ball head floating rod and bottom limiting assembly, floating rod is connected in the main body shell by ball head part floating, bottom is limited by limiting assembly, is installed between cylinder and driven body and is used, can prevent cylinder piston rod from deviating and damaging, guarantee the stability of movement of cylinder and driven body, but, most of the existing floating joint is long in overall size, can occupy more installation space, and when pressure is borne, bottom limiting assembly is stressed, is prone to damage, poor pressure bearing effect, in addition, limiting assembly needs to be assembled with main body shell, and dislocation is prone to occur in assembly process, hinders the floating effect of floating rod in main body shell, therefore, the utility model provides a space-saving floating joint. UTILITY MODEL CONTENTS

[0004] 1. TECHNICAL PROBLEM TO BE SOLVED

[0005] In view of the problems in the prior art, the utility model aims at providing a space-saving floating joint, to solve the problems of most of the existing floating joint being long in overall size, occupying more installation space, and when pressure is borne, bottom limiting assembly is stressed, is prone to damage, poor pressure bearing effect, in addition, limiting assembly needs to be assembled with main body shell, and dislocation is prone to occur in assembly process, hinders the floating effect of floating rod in main body shell.

[0006] 2. TECHNICAL SCHEME

[0007] To solve the above problems, the utility model adopts the following technical scheme:

[0008] A space-saving floating joint, including main body shell, the top end of the main body shell is movably inserted with floating rod, the main body shell is detachably connected with limiting ring in, the bottom of the main body shell is detachably connected with joint cover, and the joint cover is located at the lower side of limiting ring, the top end of the joint cover is detachably connected with hemispherical steel ball, and the hemispherical steel ball is located at the inner side of limiting ring, the bottom of the floating rod is movably hinged between limiting ring and hemispherical steel ball, the top end of the main body shell is fixedly connected with dust ring, and the floating rod is movably penetrated through dust ring.

[0009] As one preferred scheme of the utility model, the floating rod includes a connecting rod, a hemispherical sheet and a sealing protrusion, the connecting rod is movably inserted into the main body shell, the hemispherical sheet is fixedly connected to the bottom end of the connecting rod, and the hemispherical sheet is movably hinged between the limiting ring and the hemispherical steel ball, the sealing protrusion is fixedly connected to the circumferential surface of the connecting rod, and the sealing protrusion corresponds to the dustproof ring.

[0010] As one preferred scheme of the utility model, the outer surface of the hemispherical sheet is in contact with the inner surface of the limiting ring, and the inner surface of the hemispherical sheet is in contact with the outer surface of the hemispherical steel ball.

[0011] As one preferred scheme of the utility model, the dustproof ring is made of elastic material, and the dustproof ring wraps the sealing protrusion.

[0012] As one preferred scheme of the utility model, the circumferential surface of the connecting rod is detachably connected with a nut, and the nut is located on the upside of the sealing protrusion.

[0013] As one preferred scheme of the utility model, the top end of the connecting rod is provided with a taper, and the taper of the top end of the connecting rod corresponds to the threaded hole of the nut.

[0014] As one preferred scheme of the utility model, the bottom end of the joint cover is provided with a connecting port, and the opening of the connecting port is provided with a taper.

[0015] As one preferred scheme of the utility model, the joint cover, the hemispherical steel ball, the limiting ring, the main body shell and the floating rod are coaxially arranged.

[0016] As one preferred scheme of the utility model, the diameter of the top end opening of the main body shell is greater than the diameter of the connecting rod.

[0017] As one preferred scheme of the utility model, the maximum floating angle of the connecting rod at the top end opening of the main body shell is 40°.

[0018] 3. Beneficial effects

[0019] Compared with the prior art, the utility model has the advantages of:

[0020] (1) In this solution, the limiting ring is installed inside the main body shell, the dustproof ring is fixed on the top of the main body shell, the connector cover is installed at the bottom of the main body shell to connect the cylinder, the floating rod passes through to the upper side of the main body shell to connect the driven component, and the part of the floating rod that passes through to the upper side of the main body shell is elastically wrapped by the dustproof ring. The dustproof ring ensures the sealing inside the main body shell. The bottom of the floating rod is located inside the main body shell and is restricted by the limiting ring. By installing the connector cover at the opening at the bottom of the main body shell, the hemispherical steel ball contacts the inner surface of the bottom of the floating rod, thereby realizing the assembly of the entire floating joint. The overall structure is compact, convenient for processing and assembly, and misalignment is not easy to occur during the assembly process, which can ensure the floating effect.

[0021] (2) In this scheme, the floating rod is composed of a connecting rod, a hemispherical plate and a sealing protrusion. The inner and outer surfaces of the hemispherical plate are both hemispherical arc surfaces. The inner surface of the limiting ring and the outer surface of the hemispherical steel ball are also hemispherical arc surfaces. The inner surface of the hemispherical plate is in contact with the outer surface of the hemispherical steel ball, and the outer surface is in contact with the inner surface of the limiting ring, so that the connecting rod is floatingly connected inside the main body shell. The contact surfaces at the connection between the hemispherical plate, the hemispherical steel ball and the limiting ring are all hemispherical arc surfaces. Compared with the traditional spherical connection, the hemispherical floating connection shortens the overall length of the floating joint and saves installation space.

[0022] (3) In this scheme, the limiting ring is installed inside the main body shell, and its inner surface contacts the outer surface of the hemisphere of the hemisphere piece. The connector cover is installed in the opening at the bottom of the main body shell, so that the outer surface of the hemisphere steel ball contacts the inner surface of the hemisphere piece. The hemisphere steel ball and the limiting ring are respectively attached to the inner and outer surfaces of the hemisphere piece, making the floating connection structure more stable and the pressure bearing effect better. Attached Figure Description

[0023] Fig. 1 This is the front view of the present invention;

[0024] Fig. 2 This is a cross-sectional view of the present invention;

[0025] Fig. 3 This is an exploded view of the present invention.

[0026] Explanation of the labels in the diagram:

[0027] 1. Main body shell; 2. Floating rod; 21. Connecting rod; 22. Hemispherical plate; 23. Sealing protrusion; 3. Limiting ring; 4. Connector cover; 5. Hemispherical steel ball; 6. Dustproof ring; 7. Nut. Detailed Implementation

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the protection scope of the present application.

[0029] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be understood broadly, for example, "connected" can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the communication inside two elements. For a person of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0031] Embodiment:

[0032] Please refer to Figs. 1-3 A space-saving floating joint, comprising a main body shell 1, a floating rod 2 movably inserted at the top end of the main body shell 1, a limiting ring 3 detachably connected in the main body shell 1, a joint cover 4 detachably connected at the bottom end of the main body shell 1, and the joint cover 4 is located on the lower side of the limiting ring 3, a hemispherical steel ball 5 detachably connected at the top end of the joint cover 4, and the hemispherical steel ball 5 is located on the inner side of the limiting ring 3, the bottom of the floating rod 2 movably hinged between the limiting ring 3 and the hemispherical steel ball 5, a dust ring 6 fixedly connected at the top end of the main body shell 1, and the floating rod 2 movably penetrates through the dust ring 6.

[0033] In the embodiment, the limiting ring 3 is installed inside the main body shell 1, the dustproof ring 6 is installed on the top, the floating rod 2 is inserted from bottom to top through the main body shell 1, the limiting ring 3 and the dustproof ring 6, the outer surface of the bottom of the floating rod 2 is attached to the inner surface of the limiting ring 3, then the joint cover 4 is installed at the opening of the bottom of the main body shell 1, the hemispherical steel ball 5 is attached to the inner surface of the bottom of the floating rod 2, the top of the floating rod 2 is connected to the driven part on the upper side of the main body shell 1, the joint cover 4 is connected to the piston rod of the air cylinder from the bottom, the bottom of the floating rod 2 is located between the limiting ring 3 and the hemispherical steel ball 5 to realize floating, so that the air cylinder controls the movement of the driven part within a certain eccentric range, and the stability of the air cylinder and the driven part during movement is ensured, wherein the dustproof ring 6 contacts the outer surface of the floating rod 2, can protect the inside of the main body shell 1, and avoid external impurities from entering the main body shell 1 to affect the floating effect of the joint.

[0034] Specifically, the floating rod 2 includes a connecting rod 21, a hemispherical sheet 22 and a sealing protrusion 23, the connecting rod 21 is movably inserted into the main body shell 1, the hemispherical sheet 22 is fixedly connected to the bottom end of the connecting rod 21, and the hemispherical sheet 22 is movably hinged between the limiting ring 3 and the hemispherical steel ball 5, the sealing protrusion 23 is fixedly connected to the circumferential surface of the connecting rod 21, and the sealing protrusion 23 corresponds to the dustproof ring 6, the outer surface of the hemispherical sheet 22 is attached to the inner surface of the limiting ring 3, and the inner surface of the hemispherical sheet 22 is attached to the outer surface of the hemispherical steel ball 5.

[0035] In the embodiment, the floating rod 2 is composed of the connecting rod 21, the hemispherical sheet 22 and the sealing protrusion 23, the connecting rod 21 penetrates through the main body shell 1 to facilitate connection with the driven part, the hemispherical sheet 22 is located in the main body shell 1, and the inner and outer surfaces thereof are both hemispherical curved surfaces, which can be attached to the hemispherical steel ball 5 and the limiting ring 3 respectively, and slide between the hemispherical steel ball 5 and the limiting ring 3, so that the connecting rod 21 can realize floating, the sealing protrusion 23 penetrates through the main body shell 1 to the upper side of the dustproof ring 6, contacts the inner surface of the dustproof ring 6 to protect the inside of the main body shell 1, and avoid impurities from entering the main body shell 1 to affect the floating effect of the hemispherical sheet 22 between the limiting ring 3 and the hemispherical steel ball 5.

[0036] Specifically, the dustproof ring 6 is made of elastic material, and the dustproof ring 6 wraps the sealing protrusion 23.

[0037] In the embodiment, the dustproof ring 6 made of elastic material can tightly wrap the sealing protrusion 23, improve the sealing between the dustproof ring 6 and the floating rod 2, and ensure the sealing effect of the main body shell 1.

[0038] Specifically, the circumferential surface of the connecting rod 21 is detachably connected with the nut 7, and the nut 7 is located on the upper side of the sealing protrusion 23.

[0039] In this embodiment, the nut 7 is threadedly connected to the connecting rod 21, so that the connecting rod 21 locks the driven member when the driven member is connected, thereby ensuring stable connection between the driven member and the connecting rod 21.

[0040] Specifically, the top end of the connecting rod 21 is provided with a taper, and the taper of the top end of the connecting rod 21 corresponds to the threaded hole of the nut 7.

[0041] In this embodiment, the taper provided at the top of the connecting rod 21 has a guiding effect, and corresponds to the threaded hole of the nut 7, so that the nut 7 is quickly and accurately threadedly connected to the connecting rod 21.

[0042] Specifically, the bottom end of the joint cover 4 is provided with a connecting port 8, and the opening of the connecting port 8 is provided with a taper.

[0043] In this embodiment, the joint cover 4 connects the piston rod of the air cylinder through the connecting port 8, and the connecting port 8 is provided with a taper at the opening, so that the piston rod can be accurately and stably inserted.

[0044] Specifically, the joint cover 4, the half-steel ball 5, the limiting ring 3, the main body shell 1 and the floating rod 2 are coaxially arranged.

[0045] In this embodiment, the joint cover 4, the half-steel ball 5, the limiting ring 3, the main body shell 1 and the floating rod 2 are coaxially designed, so that the floating of the entire floating joint can be kept stable.

[0046] Specifically, the diameter of the opening at the top end of the main body shell 1 is greater than the diameter of the connecting rod 21.

[0047] In this embodiment, the diameter of the opening at the top end of the main body shell 1 is greater than the diameter of the connecting rod 21, so that the connecting rod 21 can be provided with the required floating space.

[0048] Specifically, the maximum floating angle of the connecting rod 21 at the opening at the top end of the main body shell 1 is 40°.

[0049] In this embodiment, the maximum floating angle of the connecting rod 21 at the opening at the top end of the main body shell 1 is limited within 40°, and the floating range of 40° can meet the use requirements of the air cylinder and the driven member in most cases, and can prevent excessive floating from affecting the movement of the air cylinder and the driven member.

[0050] Working principle: connecting rod 21 is connected to the driven member, joint cover 4 is connected to the piston rod of the cylinder, the piston rod of the cylinder pushes the whole floating joint to make the driven member move, the dustproof ring 6 wraps the sealing protrusion 23 to prevent dust and other impurities from entering the main body shell 1, to ensure the sealing of the main body shell 1, the hemispherical sheet 22 is movably connected between the limiting ring 3 and the hemispherical steel ball 5, so that the connecting rod 21 can float within a certain range, so that the driven member and the piston rod of the cylinder can move even if there is a certain deviation, to ensure the stability of the movement of the cylinder and the driven member.

[0051] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the improvement concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A space-saving floating joint, comprising a main body shell (1), characterized in that: A floating rod (2) is movably inserted into the top of the main body shell (1). A limiting ring (3) is detachably connected inside the main body shell (1). A connector cover (4) is detachably connected to the bottom of the main body shell (1), and the connector cover (4) is located below the limiting ring (3). A hemispherical steel ball (5) is detachably connected to the top of the connector cover (4), and the hemispherical steel ball (5) is located inside the limiting ring (3). The bottom of the floating rod (2) is movably hinged between the limiting ring (3) and the hemispherical steel ball (5). A dustproof ring (6) is fixedly connected to the top of the main body shell (1), and the floating rod (2) moves through the dustproof ring (6).

2. The space-saving floating joint according to claim 1, characterized in that: The floating rod (2) includes a connecting rod (21), a hemispherical piece (22) and a sealing protrusion (23). The connecting rod (21) is movably inserted into the main body shell (1). The hemispherical piece (22) is fixedly connected to the bottom end of the connecting rod (21) and is movably hinged between the limiting ring (3) and the hemispherical steel ball (5). The sealing protrusion (23) is fixedly connected to the circumferential surface of the connecting rod (21) and corresponds to the dustproof ring (6).

3. A space-saving floating joint according to claim 2, characterized in that: The outer surface of the hemispherical piece (22) is in contact with the inner surface of the limiting ring (3), and the inner surface of the hemispherical piece (22) is in contact with the outer surface of the hemispherical steel ball (5).

4. A space-saving floating joint according to claim 3, characterized in that: The dustproof ring (6) is made of elastic material and the dustproof ring (6) wraps around the sealing protrusion (23).

5. A space-saving floating joint according to claim 4, characterized in that: The circumferential surface of the connecting rod (21) is detachably connected to a nut (7), and the nut (7) is located on the upper side of the sealing protrusion (23).

6. A space-saving floating joint according to claim 5, characterized in that: The top end of the connecting rod (21) is tapered, and the tapered top end of the connecting rod (21) corresponds to the threaded hole of the nut (7).

7. A space-saving floating joint according to claim 6, characterized in that: The bottom end of the connector cover (4) is provided with a connection port (8), and the opening of the connection port (8) is tapered.

8. A space-saving floating joint according to claim 7, characterized in that: The connector cover (4), hemispherical steel ball (5), limiting ring (3), main body shell (1) and floating rod (2) are coaxially arranged.

9. A space-saving floating joint according to claim 8, characterized in that: The diameter of the top opening of the main body shell (1) is greater than the diameter of the connecting rod (21).

10. A space-saving floating joint according to claim 9, characterized in that: The maximum floating angle of the connecting rod (21) at the top opening of the main body shell (1) is 40°.

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