Combined coupling

Abstract

The utility model relates to the technical field of couplings, and discloses a combined coupling which comprises a first coupling and a second coupling, and one end of the first coupling and one end of the second coupling are sleeved with an extension shaft. The driving assembly is arranged to drive the lead screw to rotate by holding the grab handle with a hand, the lead screw drives the sliding block to transversely move on the surface of the lead screw through spiral transmission, the sliding block drives the push rod to move, the push rod drives the shaft bush to move, the shaft bush drives the extension shaft to be pulled out of the coupler, and length adjustment is completed. The problem that accurate positioning cannot be completed according to different intervals in the prior art is solved, practicability is improved, the buffering assembly connected with the connecting piece is arranged in the shaft bush, after the connecting piece is connected with the two shaft bodies, the shaft bodies drive the connecting piece to generate shaking amplitude, and therefore the buffering effect is improved. The connecting piece receives the amplitude to drive the pressing block and the pressing plate to be output to the buffer spring and the shock pad for absorption to complete shock absorption, and the buffer assembly is convenient to disassemble and maintain through the positioning block and the external bolt.

Description

TECHNICAL FIELD

[0001] The utility model relates to a coupling technical field especially relates to a combined coupling. BACKGROUND

[0002] Couplings are commonly used in mechanical transmission to absorb vibration, compensate for radial and angular deviation. Plum blossom coupling, corrugated pipe coupling, diaphragm coupling, elastic coupling, rigid coupling, slider coupling, universal coupling, chain type coupling, spring spiral coupling, rubber resin coupling, tire type coupling, elastic pin coupling, curved tooth coupling, multi-angle coupling, permanent magnet coupling, safety coupling.

[0003] The utility model discloses a combined coupling belongs to coupling technical field, including the coupling body, the surface of coupling body is equipped with a plurality of sliding grooves, the surface of sliding groove is connected with the sliding block of sliding, the side of sliding block is fixedly connected with the connecting block, the surface of coupling body is equipped with the sleeve, the surface of sleeve is fixedly connected with the square block, the first connecting rod is rotatably connected between square block and connecting block, the surface of coupling body is equipped with a plurality of fixed holes on one side of sliding groove. The utility model discloses through being equipped with sliding block, first connecting rod and sleeve, through moving sliding block, make first connecting rod move and push sleeve and move, the distance between sleeve and coupling body is moved to the distance required, according to the distance between two shafts, adjust the distance between coupling and sleeve, make the coupling can be applicable to the required environment;

[0004] The device realizes the extension of the coupling by the mode of the fixing rod and the fixing hole to meet the connection of different shaft distances, and then the spacing of the fixing hole is fixed, so that the precise adjustment of each spacing cannot be met in all directions when positioning and connecting, and the device lacks the corresponding buffer protection function, so that the coupling is prone to failure and other safety problems when being subjected to strong mechanical vibration in use, and compared with the traditional damping mechanism, the device is inconvenient to disassemble, and the combined coupling is provided to solve the above problems. UTILITY MODEL CONTENTS

[0005] In order to make up for the above shortcomings, the utility model provides a combined coupling, which aims to improve the problems of lack of precise positioning function of coupling extension and lack of built-in buffer damping function in the prior art.

[0006] In order to achieve the above object, the utility model discloses the following technical scheme: a combined shaft coupling, including first coupling and second coupling, one end of first coupling and second coupling is sleeved with extension shaft, one side fixed sleeve of extension shaft has the axle bushing, the inside movable sleeve of axle bushing has the connecting piece, the top of first coupling and second coupling is installed with drive assembly, the inside of axle bushing is installed with buffer assembly.

[0007] As further description of the above technical scheme:

[0008] The drive assembly includes a support plate, one end of the support plate is connected to the port of the shaft coupling, a handle is installed at the back end of the support plate, a tension-adjustable bolt is screwed on the surface of the handle and fixedly connected with the support plate, a lead screw is connected to the inside of the support plate through the handle, and a sliding block is screw-driven on the outer surface of the lead screw.

[0009] As further description of the above technical scheme:

[0010] The outer surface of the sliding block is fixedly installed with a push rod, one end of the push rod is fixedly connected with the axle bushing through the support plate.

[0011] As further description of the above technical scheme:

[0012] The buffer assembly includes a pressure block connected with the connecting piece, a pressure plate connected with the pressure block through a pressure rod at both sides of the bottom end of the pressure block, a plurality of buffer springs provided at the bottom end of the pressure plate, a shock pad provided between one end of the buffer spring and the axle bushing, a positioning block provided at the axle bushing corresponding to the shock pad, and the positioning block is fixedly connected with the shock pad through an external bolt.

[0013] As further description of the above technical scheme:

[0014] The bottom end of the first coupling and the second coupling is provided with a guide rod, one end of the guide rod is connected to the back end surface of the axle bushing.

[0015] As further description of the above technical scheme:

[0016] The surface of the axle bushing is provided with a positioning hole, a positioning bolt is screwed in the positioning hole, and the axle bushing is tightly connected through the positioning bolt penetrating the positioning hole.

[0017] The utility model has the following beneficial effects:

[0018] The utility model discloses a drive assembly is arranged through setting, and the handle is driven through hand holding handle to drive screw rod rotation, and the sliding block is driven to move in its surface transverse motion through screw transmission of screw rod, and the sliding block drives push rod to move, and the push rod drives axle bushing to move, and the axle bushing drives extension axle to draw out in the inside coupling, and the length adjustment is completed, solve the problem that prior art can not complete accurate positioning according to different interval, improve practicality, through the buffer assembly that is connected with connecting piece is arranged in the inside axle bushing, when connecting piece connects two axle bodies, and the connecting piece receives amplitude and drives pressure block, pressing plate export to buffer spring and shock pad absorption complete shock attenuation, through the convenient disassembly maintenance of buffer assembly that is realized to external bolt of positioning block. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a three-dimensional partial schematic view of a combined coupling proposed in the utility model;

[0020] Figure 2 It is an elevation view of a combined coupling proposed in the utility model;

[0021] Figure 3 It is an axle bushing sectional view of a combined coupling proposed in the utility model;

[0022] Figure 4 It is an enlarged schematic view of structure A of a combined coupling proposed in the utility model;

[0023] Figure 5 It is a partial schematic view of a drive assembly provided in the utility model;

[0024] LEGEND:

[0025] 1, first coupling; 2, second coupling; 3, extension axle; 4, axle bushing; 5, connecting piece; 6, drive assembly; 601, support plate; 602, handle; 603, screw rod; 604, sliding block; 7, buffer assembly; 701, pressure block; 702, pressing plate; 703, buffer spring; 704, positioning block; 705, shock pad; 8, push rod; 9, guide rod; 10, positioning hole; 11, positioning bolt. DETAILED DESCRIPTION

[0026] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0027] REFERENCE Figures 1-4The utility model provides a kind of embodiment: a combined shaft coupling, including first coupling 1 and second coupling 2, one end of first coupling 1 and second coupling 2 is sleeved with extension shaft 3, one side of extension shaft 3 is fixedly sleeved with shaft bushing 4, the inside of shaft bushing 4 movably sleeved with connecting piece 5, the top of first coupling 1 and second coupling 2 is equipped with driving assembly 6, and buffer assembly 7 is installed in the inside of shaft bushing 4;

[0028] Driving assembly 6 includes support plate 601, one end of support plate 601 is connected to the port of coupling, the back end of support plate 601 is equipped with handle 602, and the surface of handle 602 is screw-connected with adjustable tension bolt and is fixedly connected with support plate 601, handle 602 is connected with lead screw 603 penetrating the inner side of support plate 601, and the outer surface of lead screw 603 is screw-driven with sliding block 604.

[0029] The outer surface of sliding block 604 is fixedly installed with push rod 8, and one end of push rod 8 is fixedly connected with shaft bushing 4 penetrating support plate 601.

[0030] Buffer assembly 7 includes pressure block 701 connected with connecting piece 5, pressure plate 702 is connected with pressure block 701 on both sides of bottom end through pressure rod, a plurality of buffer springs 703 are arranged on the bottom end of pressure plate 702, shock pad 705 is arranged between one end of buffer spring 703 and shaft bushing 4, positioning block 704 is arranged at the position corresponding to shock pad of shaft bushing 4, and positioning block 704 is fixedly connected with shock pad 705 through external thread bolt.

[0031] The bottom end of first coupling 1 and second coupling 2 is provided with guide rod 9, and one end of guide rod 9 is connected to the back end surface of shaft bushing 4.

[0032] The surface of shaft bushing 4 is provided with positioning hole 10, and positioning screw 11 is screw-connected in the inside of positioning hole 10, and the positioning hole 10 of two shaft bushings 4 is corresponding, and the shaft bushing 4 is tightly connected by positioning screw 11 penetrating positioning hole 10.

[0033] Specific, through the first coupling 1 and the second coupling 2 complete the connection between the two shaft body work, through the positioning bolt 11 through the positioning hole 10 will be fixed connection between the two shaft bushing 4, complete the coupling installation work, through the extension shaft 3 can meet the different shaft spacing adaptive adjustment, improve the practicality, shaft bushing 4 is used to connect with the drive assembly 6, and ensure that the connecting piece 5 and the buffer assembly 7 are connected with the carrier structure, installed in the coupling port, the drive assembly 6 is fixed on the top surface of the coupling through the support plate 601, and the handle 602 can be manually controlled to rotate to drive the screw rod 603 to rotate, the screw rod 603 drives the sliding block 604 to move transversely on its surface through the screw transmission principle, the sliding block 604 drives the push rod 8 to push the shaft bushing 4 to move, the shaft bushing 4 moves to drive the extension shaft 3 to be pulled out from the inside of the coupling, and the length extension function is completed. After being extended to the appropriate length, manually rotate the handle 602 to lock the screw and complete the fixed connection with the support plate 601, realize the locking and limiting of the screw rod 603, and the coupling can effectively absorb the amplitude generated by external instruments when in use through the buffer assembly 7, so as to achieve the purpose of buffering safety. When the amplitude generated by the instrument drives the shaft body structure to shake, the shaft body passes through the connecting piece 5 penetrating the outer surface to shake, the connecting piece 5 drives the pressing block 701 to vibrate, the pressing block 701 drives the pressing plate 702 to vibrate through the pressure rod, the pressing plate 702 extrudes the bottom buffer spring 703 and the damping pad 705 to achieve the damping effect. The buffer assembly 7 is fixedly installed in the inside of the shaft bushing 4 through the positioning block 704 and the external bolt, so as to achieve the purpose of convenient disassembly.

[0034] Working principle: in use, the two shafts are respectively sleeved into the inside of the first coupling 1 and the second coupling 2, the shaft bushing 4 is correspondingly contacted by using the drive assembly 6 according to the spacing of the two shafts, the handle 602 is manually held to drive the screw rod 603 to rotate, the screw rod 603 drives the sliding block 604 to move transversely on its surface through the screw transmission principle, the sliding block 604 drives the push rod 8 to push the shaft bushing 4 to move, the shaft bushing 4 moves to drive the extension shaft 3 to be pulled out from the inside of the coupling, the guide rod 9 at the bottom of the coupling ensures the stability of the structure, so that the shaft bushing 4 is accurately positioned and contacted under the driving of the extension shaft 3, the locking screw handle 602 is turned, then the positioning bolt 11 is passed through the positioning hole 10 to complete the combined installation of the coupling, the buffer assembly 7 is fixedly installed in the inside of the shaft bushing 4 through the positioning block 704 and the external bolt, so that the pressing block 701 is in contact with the inside surface of the connecting piece 5, the connecting piece 5 is vibrated by the shaft, and the connecting piece 5 is extruded by the pressing block 701 and the pressing plate 702 to the buffer spring 703 and the damping pad 705, so as to complete the effective amplitude absorption.

[0035] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A combined coupling comprising a first coupling (1) and a second coupling (2), characterized in that: The first coupling (1) and the second coupling (2) are sleeved with an extension shaft (3), one side of the extension shaft (3) is fixedly sleeved with a shaft bushing (4), the inside of the shaft bushing (4) is movably sleeved with a connecting piece (5), the top of the first coupling (1) and the second coupling (2) is provided with a driving assembly (6), and the inside of the shaft bushing (4) is provided with a buffer assembly (7).

2. A combined coupling according to claim 1, characterized in that: The driving assembly (6) comprises a support plate (601), one end of the support plate (601) is connected to the port of the coupling, the back end of the support plate (601) is provided with a handle (602), the surface of the handle (602) is screw-connected with a tension-adjustable bolt and is fixedly connected with the support plate (601), the handle (602) penetrates the inner side of the support plate (601) and is connected with a lead screw (603), and the outer surface of the lead screw (603) is screw-driven with a sliding block (604).

3. A combined coupling according to claim 2, characterized in that: The outer surface of the sliding block (604) is fixedly provided with a push rod (8), one end of the push rod (8) penetrates the support plate (601) and is fixedly connected with the shaft bushing (4).

4. The combined coupling according to claim 1, characterized in that: The buffer assembly (7) comprises a pressing block (701) connected with the connecting piece (5), the bottom of the pressing block (701) is connected with a pressing plate (702) through a pressing rod on both sides, the bottom of the pressing plate (702) is provided with a plurality of buffer springs (703), the buffer spring (703) is provided with a damping pad (705) between one end and the shaft bushing (4), the shaft bushing (4) is provided with a positioning block (704) corresponding to the damping pad, and the positioning block (704) is fixedly connected with the damping pad (705) through an external bolt.

5. The combined coupling according to claim 1, characterized in that: The bottom of the first coupling (1) and the second coupling (2) is provided with a guide rod (9), one end of the guide rod (9) is connected to the back end surface of the shaft bushing (4).

6. A combined coupling according to claim 1, characterized in that: The surface of the shaft bushing (4) is provided with a positioning hole (10), the inside of the positioning hole (10) is screw-connected with a positioning bolt (11), and the positioning holes (10) of the shaft bushing (4) correspond to each other, and the shaft bushing (4) is tightly connected by penetrating the positioning hole (10) through the positioning bolt (11).

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