Coupling convenient to replace

Abstract

The utility model relates to the technical field of mechanical parts, in particular to a coupler convenient to replace, which comprises two shaft sleeves and a connecting piece used for connecting the two shaft sleeves, key grooves are arranged on the inner sides of the shaft sleeves, the connecting piece comprises a fixing cylinder, and positioning rings are detachably mounted at two ends of the fixing cylinder. A fixing ring is fixedly connected to the end, located in the fixing cylinder, of the shaft sleeve, a plurality of first arc-shaped grooves are formed in the edge of the fixing ring, second arc-shaped grooves corresponding to the first arc-shaped grooves in position are formed in the inner wall of the fixing cylinder, the first arc-shaped grooves and the second arc-shaped grooves form circular grooves, and limiting columns are installed in the circular grooves. When shafts with different diameters are replaced and connected or gaskets are replaced, the positioning ring at one end is taken down, then the corresponding shaft sleeve or gasket is replaced, the whole coupler does not need to be disassembled and assembled in the replacement process, and convenience and rapidness are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical accessory technical field, concretely is a coupling convenient to replace. BACKGROUND

[0002] The coupling is a kind of device for connecting two shafts or connecting shaft and rotary member, can ensure that the two shafts connected together rotate, the two ends of coupling are generally provided with the connecting hole for the shaft to pass through, and the shaft is fixedly connected with the connecting hole by screw, usually one end is connected with motor shaft, the other end is connected with rotary shaft, can effectively improve the centring of two shafts, is convenient to maintain, and the transmission torque is large.

[0003] The existing coupling needs to be disassembled and replaced as a whole when connecting different shaft diameters, and the coupling also needs to be disassembled as a whole when replacing the gasket on the coupling, which is relatively inconvenient. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problem that the existing coupling needs to be disassembled and replaced as a whole when connecting different shaft diameters and replacing the gasket.

[0005] In order to solve the above problems, the technical scheme of the utility model is as follows: a coupling convenient to replace, comprising two shaft sleeves and a connecting piece for connecting the two shaft sleeves, a key groove is formed in the inner side of the shaft sleeve, the connecting piece comprises a fixed cylinder, a positioning ring is detachably installed at both ends of the fixed cylinder, a fixed ring is fixedly connected to one end of the fixed cylinder inside the shaft sleeve, a plurality of arc grooves one are formed in the edge of the fixed ring, a plurality of arc grooves two corresponding to the positions of the arc grooves one are formed in the inner wall of the fixed cylinder, the arc grooves one and the arc grooves two form a circular groove, and a limiting column is installed in the circular groove.

[0006] Further, a plurality of threaded holes are formed in both ends of the fixed cylinder, a bolt is installed in the threaded hole, and a through hole corresponding to the position of the threaded hole is formed in the positioning ring.

[0007] Further, the diameter of the fixed ring is equal to the inner diameter of the fixed cylinder, and the inner diameter of the positioning ring is smaller than the diameter of the fixed ring.

[0008] Further, a plurality of gaskets are placed between the two fixed rings inside the fixed cylinder.

[0009] Compared with the prior art, the utility model has the advantages that when replacing and connecting shafts of different diameters or replacing gaskets, the positioning ring at one end is removed, and then the corresponding shaft sleeve or gasket can be replaced, without the need to disassemble and assemble the coupling as a whole, which is convenient and fast. BRIEF DESCRIPTION OF DRAWINGS

[0010] Fig. 1is the perspective view of the utility model.

[0011] Fig. 2 is the sectional view of the utility model.

[0012] Fig. 3 is the structure diagram of the shaft sleeve of the utility model.

[0013] Fig. 4 is the structure diagram of the fixed cylinder of the utility model.

[0014] As shown in the figure: 1, shaft sleeve, 2, fixed cylinder, 3, positioning ring, 4, fixed ring, 5, arc slot one, 6, arc slot two, 7, limit column, 8, bolt, 9, gasket. DETAILED DESCRIPTION

[0015] The technical scheme in the embodiments of the utility model will be apparently and completely described below with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments; based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor fall within the protection scope of the utility model.

[0016] As Figs. 1 to 4 shown, a coupling convenient to replace, including two shaft sleeves 1 and the connecting piece for connecting two shaft sleeves 1, the inside of shaft sleeve 1 is provided with keyway, the connecting piece includes fixed cylinder 2, the both ends of fixed cylinder 2 are detachably installed with positioning ring 3, the both ends of fixed cylinder 2 are provided with a plurality of threaded holes, the threaded hole is installed with bolt 8, the positioning ring 3 is provided with the through hole corresponding with the position of threaded hole on it, the one end of shaft sleeve 1 is fixedly connected with fixed ring 4 in the inside of fixed cylinder 2, the inner diameter of positioning ring 3 is less than the diameter of fixed ring 4.

[0017] The fixed ring 4 of the end of shaft sleeve 1 is placed in fixed cylinder 2, then the positioning ring 3 is installed in the both ends of fixed cylinder 2 through bolt 8, which can avoid the separation of shaft sleeve 1 and fixed cylinder 2. When connecting shafts of different diameters, only need to take down the positioning ring 3 of one end to be replaced, then the corresponding shaft sleeve 1 is taken down and replaced.

[0018] A plurality of arc grooves one 5 are provided at the edge of fixed ring 4, a plurality of arc grooves two 6 corresponding with the position of arc grooves one 5 are provided on the inner wall of fixed cylinder 2, arc grooves one 5 and arc grooves two 6 form circular grooves, and limit column 7 is installed in the circular grooves.

[0019] The setting of arc grooves one 5, arc grooves two 6 and limit column 7 can prevent the relative rotation between shaft sleeve 1 and fixed cylinder 2, and improve the stability of transmission.

[0020] A plurality of gaskets 9 are placed between the two fixed rings 4 in the inside of fixed cylinder 2.

[0021] The gasket 9 can buffer the force between the two fixing rings 4, when the gasket 9 needs to be replaced, only one positioning ring 3 is disassembled, then the fixed cylinder 2 is slid to expose the gasket 9 outside the fixed cylinder 2, and the gasket 9 can be replaced.

[0022] In specific use, when different diameter shafts are replaced and connected, one end of the positioning ring 3 is disassembled, then the corresponding shaft sleeve 1 is disassembled and replaced, and the connection of the two shafts can be completed, when the gasket 9 needs to be replaced, only one positioning ring 3 is disassembled, then the fixed cylinder 2 is slid to expose the gasket 9 outside the fixed cylinder 2, and the gasket 9 can be replaced. The replacement process does not need to disassemble and assemble the whole shaft coupling, which is convenient and fast.

[0023] The non-disclosed parts in the utility model are prior art, and the specific structure and working principle will not be repeated.

[0024] It should be noted that, in this document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0025] Although embodiments of the utility model have been shown and described, it will be apparent to those having ordinary skill in the art that a number of changes, modifications, replacements, and variations of the embodiments can be made without departing from the principles and spirit of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

[0026] The utility model and its implementation mode have been described above, and this description is not restrictive, and the drawings only show one of the implementation modes of the utility model, and the actual structure is not limited to this. In general, if a person skilled in the art is inspired by this, without departing from the creative purpose of the utility model, without creative design, similar structure modes and embodiments of the technical scheme can be designed, which should belong to the protection scope of the utility model.

Claims

1. A coupling facilitating replacement, comprising two shaft sleeves (1) and a connecting piece for connecting the two shaft sleeves (1), the shaft sleeves (1) being provided with a key groove on the inner side, characterized in that: The connector includes a fixed cylinder (2), and positioning rings (3) are detachably installed at both ends of the fixed cylinder (2). The bushing (1) is fixedly connected to a fixed ring (4) at one end inside the fixed cylinder (2). Multiple arc-shaped grooves (5) are provided at the edge of the fixed ring (4). Arc-shaped grooves (6) corresponding to the positions of the arc-shaped grooves (5) are provided on the inner wall of the fixed cylinder (2). The arc-shaped grooves (5) and (6) form a circular groove. A limit post (7) is installed in the circular groove.

2. A coupling for ease of replacement according to claim 1, wherein: Multiple threaded holes are provided at both ends of the fixed cylinder (2), and bolts (8) are installed in the threaded holes. A through hole corresponding to the position of the threaded hole is provided on the positioning ring (3).

3. The easily replaceable coupling according to claim 1, characterized in that: The diameter of the fixing ring (4) is equal to the inner diameter of the fixing cylinder (2), and the inner diameter of the positioning ring (3) is smaller than the diameter of the fixing ring (4).

4. The easily replaceable coupling according to claim 1, characterized in that: Inside the fixed cylinder (2), multiple gaskets (9) are placed between two fixed rings (4).

Images