CN210344071U - Flower fork type coupling - Google Patents

Abstract

The utility model discloses a flower fork type shaft coupling, including the shaft coupling body, the shaft coupling body has the driving shaft socket, driven shaft socket and flower fork portion, flower fork portion has four and four big chamfer patterns of flower shape along the circumferencial direction equipartition altogether, form the leading passageway that leads between per two adjacent flower fork portions, evenly set firmly four supplementary spacing bodies on the circumference lateral wall middle part position of shaft coupling body, extrusion reset spring's the other end is fixed with the extrusion tapered end, be fixed with the slider on the top lateral wall of extrusion tapered end and the bottom side wall, it is spacing in the guide rail to lead the slider adaptation, the trilateral sliding surface that leads that sets up to conflicting down of end portion of extrusion tapered end respectively, the butt joint shutoff face and the spacing face of locking. The utility model discloses a to the dead purpose of automatic locking after the shaft coupling in the driven shaft butt joint, guaranteed the work steadiness of shaft coupling, the practicality is strong, is fit for using widely in each big mill.

Description

Flower fork type coupling

Technical Field

The utility model relates to a relevant technical field of shaft coupling specifically is a flower fork type shaft coupling.

Background

The coupling is used to firmly couple the driving and driven shafts of different mechanisms together for rotation and to transmit mechanical components of motion and torque. Sometimes it is also used to couple a shaft to other parts (e.g. gears, pulleys, etc.), often composed of two halves, coupled by keys or tight fits, etc., respectively, fastened at the two shaft ends, and then coupled by some means.

The coupling can compensate the offset (including axial offset, radial offset, angular offset or comprehensive offset) between two shafts caused by inaccurate manufacture and installation, deformation or thermal expansion in work and the like, and can alleviate impact and absorb vibration.

Most of common couplers are standardized or normalized, generally, only the type of the coupler needs to be correctly selected, the model and the size of the coupler need to be determined, if necessary, the vulnerable weak link can be checked and calculated for load capacity, and when the rotating speed is high, the centrifugal force of the outer edge of the coupler and the deformation of an elastic element need to be checked and calculated for balance check and the like.

However, the traditional coupler cannot ensure that the driving shaft and the driven shaft can be quickly installed and connected under the condition that the concentricity is different, and the driven shaft is in butt joint with the upper coupler and then is easy to loose due to the fact that the driven shaft cannot be automatically locked, so that the working stability of the coupler is influenced, the application range is greatly influenced and limited, and improvement is necessary.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a flower fork type shaft coupling to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a flower-fork type coupler comprises a coupler body, wherein the coupler body is provided with a driving shaft socket, a driven shaft socket and a flower-fork part, four end parts of the flower-fork part are uniformly distributed along the circumferential direction and designed into a flower-shaped large chamfer type, a main guide channel is formed between every two adjacent flower-fork parts, four auxiliary limiting bodies are uniformly and fixedly arranged at the middle position of the circumferential side wall of the coupler body, the four auxiliary limiting bodies and the four main guide channels are arranged in a one-to-one corresponding matching mode, the head and the tail of the four auxiliary limiting bodies form a whole through a first welding angle and a second welding angle and are fixedly connected with the circumferential side wall of the coupler body in a sealing mode, the auxiliary guide channels are arranged in the middle of the auxiliary limiting bodies in a penetrating mode, and a blind hole is respectively formed in the symmetrical position of the left side and the right side of each auxiliary limiting body and the corresponding, the extrusion reset spring is correspondingly configured in each blind hole, one end of the extrusion reset spring is fixed on the inner wall of the blind hole, the other end of the extrusion reset spring is fixed with an extrusion lock head, a guide block is fixed on the top side wall and the bottom side wall of the extrusion lock head, the guide block is adaptive to a guide rail, three surfaces of the end head of the extrusion lock head are respectively set to be butted with a lower guide sliding surface, a butted plugging surface and a locked limiting surface, and the two extrusion lock heads are butted together through the butted plugging surfaces.

As a further aspect of the present invention: the top end of the auxiliary guide channel and the top end of the main guide channel are at the same height, and the inner diameter size and the width of the auxiliary guide channel and the inner diameter size of the main guide channel are the same.

As a further aspect of the present invention: the cross section of the end head part of the extrusion lock head is in an isosceles trapezoid shape after being turned over.

As a further aspect of the present invention: the inside diameter of the cross section of a gap enclosed by the top end of the auxiliary guide channel and the end parts of the two extrusion lock heads is matched with the diameter of the linkage pin.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses design into the big chamfer pattern of flower shape with the shaft coupling front end, it is convenient fast to guarantee under the condition of driving shaft and driven shaft not at the concentricity, automatic positioning's transmission shafting is connected, and it is equipped with supplementary spacing body to add structurally, supplementary guide channel, extrude reset spring, the extrusion tapered end, guide block and guide rail, realized the dead purpose of automatic locking after the shaft coupling in the driven shaft butt joint, the shutoff of linkage round pin is carried out in the cooperation that utilizes extrusion tapered end and extrusion reset spring, fine prevention the not hard up phenomenon of linkage round pin emergence, the work steadiness of shaft coupling has been guaranteed, structural design is ingenious, therefore, the clothes hanger is strong in practicability, this shaft coupling extensively is applicable to low rotational speed, low moment of torsion, it is not strict to require to the rotational speed, the narrow and small transmission shafting.

Drawings

Fig. 1 is an external view of a spider type coupling.

Fig. 2 is a perspective view of four spider parts of a spider type coupling.

Fig. 3 is a schematic top view of a spider type coupling.

Fig. 4 is a schematic cross-sectional view of a-a in fig. 3.

Fig. 5 is a schematic diagram of the linkage pin and the auxiliary limiting body in the flower-fork type coupling.

FIG. 6 is a schematic view of an assembly process of a driven shaft and a coupling body in a flower-fork type coupling; the number (1) indicates a part three-dimensional structure schematic diagram before the driven shaft and the coupling body are assembled, and the number (2) indicates a part cross-sectional structure schematic diagram after the driven shaft and the coupling body are assembled.

In the figure: 1. a coupling body; 101. a driving shaft socket; 102. a driven shaft socket; 2. a flower fork part; 201. a main guide channel; 3. an auxiliary limiting body; 301. an auxiliary guide channel; 4. a second weld corner; 5. a first weld corner; 6. blind holes; 7. extruding the lock head; 701. a lower abutting sliding guide surface; 702. butting the plugging surfaces; 703. locking a limiting surface; 8. extruding the return spring; 9. a guide slider; 10. a guide rail; 11. a linkage pin; 12. a drive shaft; 13. a driven shaft.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Referring to fig. 1-3, a spline type coupler comprises a coupler body 1, wherein the coupler body 1 is provided with a driving shaft socket 101, a driven shaft socket 102 and a spline part 2, the spline part 2 is uniformly distributed with four end parts 2 along the circumferential direction, the four end parts 2 are designed into a spline type large chamfer, a main guide channel 201 is formed between every two adjacent spline parts 2, the front end of the coupler is designed into the spline type large chamfer, and the connection of a driving shaft system which is rapid, convenient and automatic in positioning under the condition that the driving shaft and the driven shaft are not in concentricity is ensured.

Four auxiliary limiting bodies 3 are uniformly and fixedly arranged at the middle position of the circumferential side wall of the coupler body 1, the four auxiliary limiting bodies 3 and the four main guide channels 201 are arranged in a one-to-one corresponding matching manner, the head and the tail of the four auxiliary limiting bodies 3 form a whole through a first welding angle 5 and a second welding angle 4 and then are fixedly connected with the circumferential side wall of the coupler body 1 in a sealing manner, the auxiliary guide channels 301 are arranged at the middle part of the auxiliary limiting bodies 3 in a penetrating manner, the top ends of the auxiliary guide channels 301 and the top ends of the main guide channels 201 are at the same height, the inner diameter size and the width of the auxiliary guide channels and the top ends of the main guide channels are the same, a blind hole 6 is respectively arranged in the auxiliary limiting bodies 3 and at the symmetrical positions on the left side and the right side corresponding to the auxiliary guide channels 301, an extrusion reset spring 8 is correspondingly arranged in each blind hole, the other end of the extrusion reset spring 8 is fixed with an extrusion lock head 7, a guide slide block 9 is fixed on the top side wall and the bottom side wall of the extrusion lock head 7, the guide slide block 9 is matched and limited in a guide rail 10, the cross section of the end head of the extrusion lock head 7 is set to be in an isosceles trapezoid shape after being turned for 90 degrees, three surfaces of the cross section are respectively set to be a lower-collision guide slide surface 701, a butt-joint plugging surface 702 and a top-locking limit surface 703, the two extrusion lock heads 7 are butted and butted together through the butt-joint plugging surface 702, and the inner diameter of the cross section of a gap formed by the top end of the auxiliary guide channel 301 and the end head of the two extrusion lock heads.

Through the novel design of the flower fork type coupler of the utility model, when in actual use, a driving shaft 12 to be connected is fixedly connected with a coupler body 1, after the position of a linkage pin 11 on a driven shaft 13 is observed, the linkage pin 11 is aligned to any two opposite main guide channels 201 and then inserted into a driven shaft socket 102, the flower fork part 2 in a petal shape is convenient for guiding the linkage pin 11, when the linkage pin 11 travels along the main guide channel 201, the linkage pin firstly collides against two opposite lower collision guide sliding surfaces 701, then the linkage pin 11 applies a pressure to the lower collision guide sliding surfaces 701, two extrusion lock heads 7 on the left side and the right side synchronously move outwards, four extrusion reset springs 8 in the process synchronously extrude and compress, the extrusion lock heads 7 ensure the moving stability under the matching of the guide sliding blocks 9 and the guide rails 10, the extrusion lock heads 7 after being contracted leave a gap for the linkage pin 11, the linkage pin 11 passes through and reaches the top ends of the auxiliary guide channel 301 and the main guide channel 201, the extrusion force applied to the extrusion lock head 7 disappears, the extrusion reset spring 8 resets immediately, the extrusion lock head 7 is pushed to restore to the original state again, and the linkage pin 11 is locked by utilizing the clearance formed by the two locking limit surfaces 703 and the top end of the auxiliary guide channel 301, so that the purpose of automatic locking after the driven shaft 13 is butted with the coupler is realized.

Utilize extrusion tapered end 7 and extrusion reset spring 8's cooperation to carry out the shutoff of interlocking pin 11, fine prevented that interlocking pin 11 from taking place not hard up the phenomenon, further guaranteed the work steadiness of shaft coupling, structural design is ingenious, and the practicality is strong, extensively is applicable to low rotational speed, low moment of torsion, not strict to the rotational speed requirement, and the narrow and small connected place of stirring the transmission shafting in space uses.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.

Claims (4)

1. A flower fork type coupler comprises a coupler body (1) and is characterized in that the coupler body (1) is provided with a driving shaft socket (101), a driven shaft socket (102) and flower fork parts (2), the flower fork parts (2) are uniformly distributed with four end parts (2) in a flower shape large chamfer pattern along the circumferential direction, a main guide channel (201) is formed between every two adjacent flower fork parts (2), four auxiliary limiting bodies (3) are uniformly and fixedly arranged on the middle position of the circumferential side wall of the coupler body (1), the four auxiliary limiting bodies (3) and the four main guide channels (201) are correspondingly arranged one by one, the head and the tail of the four auxiliary limiting bodies (3) are sealed and fixedly connected with the circumferential side wall of the coupler body (1) after forming a whole through a first welding angle (5) and a second welding angle (4), an auxiliary guide channel (301) is arranged in the middle of the auxiliary limiting body (3) in a penetrating way, a blind hole (6) is respectively arranged in the auxiliary limiting body (3) and at the symmetrical positions corresponding to the left side and the right side of the auxiliary guide channel (301), an extrusion reset spring (8) is correspondingly arranged in each blind hole (6), one end of the extrusion reset spring (8) is fixed on the inner wall of the blind hole (6), an extrusion lock head (7) is fixed at the other end of the extrusion return spring (8), guide sliding blocks (9) are fixed on the top side wall and the bottom side wall of the extrusion lock head (7), the guide sliding block (9) is matched and limited in the guide rail (1)0, three faces of the end head part of the extrusion lock head (7) are respectively provided with a lower abutting guide sliding face (701), a butting plugging face (702) and a locking limiting face (703), and the two extrusion lock heads (7) are abutted and butted together through the butting plugging face (702).

2. A flower-fork type coupling according to claim 1, characterized in that the top of the auxiliary guide channel (301) is at the same height and the width of the inner diameter dimension of the main guide channel (201).

3. A flower-fork type coupling according to claim 1, characterized in that the cross-section of the end portion of the squeeze lock (7) is configured in the shape of an isosceles trapezoid turned (90 degrees).

4. The coupler of claim 1, wherein the inside diameter of the cross section of the gap enclosed between the top end of the auxiliary guide channel (301) and the end parts of the two extrusion lock heads (7) is matched with the diameter of the linkage pin (11).

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