CN206329645U - The shaft coupling of adjustable thresholding - Google Patents

Abstract

The utility model belongs to the field of transmission connection, in particular to a coupling with adjustable threshold. The utility model provides a coupling with an adjustable threshold, which includes a coupling block and a flexible structure, the coupling block includes a first coupling block and a second coupling block, and the flexible structure is located between the first coupling block and the second coupling block. Between the connecting blocks, the connecting block is provided with a plurality of deep holes arranged equidistantly along the same axis on its inner end face; the flexible structure includes connecting pieces, connecting plates and through holes, and the connecting plate is provided with multiple The two ends of the connecting piece are inserted into the holes of the connecting block and the connecting plate respectively. The above-mentioned adjustable threshold coupling not only overcomes the large torsional rigidity of the coupling, but also enables the coupling to have a threshold adjustment, and at the same time reduces the requirement for a high coaxiality of the coupling, and can effectively buffer the coupling Frequent overloading of the device.

Description

Couplings with adjustable thresholds

technical field

The utility model belongs to the field of transmission connection, in particular to a coupling with an adjustable threshold.

Background technique

Couplings are important components in mechanical transmission series. They are often used to connect two shafts or shafts and rotating parts to transmit torque and moving mechanical parts. Couplings are widely used in mechanical equipment.

When the coupling is continuously impacted by heavy loads, the intermediate connection part of the coupling cannot convert the impact force well, and the intermediate connection part of the coupling is easily damaged.

At present, most couplings have relatively high torsional rigidity, almost no torsional flexibility, and require high coaxiality, which brings troubles to users during installation and replacement.

Utility model content

Therefore, the technical problem to be solved by the utility model is to overcome the problems that the shaft coupling has relatively high torsional rigidity, almost no torsional flexibility, and high coaxiality requirements.

Aiming at the technical defects of the above background technology, the utility model provides a coupling with an adjustable threshold, including a coupling block and a flexible structure, the coupling block includes a first coupling block and a second coupling block, and the flexible structure is located at the first coupling block. Between a connecting block and the second connecting block, the deep holes are evenly distributed along the inner circumference of the connecting block; the flexible structure includes a connecting piece, a connecting plate and through holes, and the through holes are evenly distributed along the circumferential direction of the connecting plate, The two ends of the coupling piece are inserted into the deep hole of the coupling block and the through hole of the coupling plate respectively.

As a preference, the coupling can be two variants A and B. As shown in variant A, the coupling is composed of a middle section and two matching sections, and the middle section has an included angle with the two matching sections. , the length directions of the two mating sections are parallel.

Preferably, the coupling is composed of a middle section and two matching sections, and the axis of the middle section is in the same length direction as the two matching sections.

Optionally, the connecting plate is provided with three through-holes on its end surface, the three holes of the three-way through-holes are adjacent to each other, and the three-way through-holes are evenly distributed along the circumference of the connecting plate;

Optionally, the same triple deep holes are provided at the position of the connecting block corresponding to the triple through holes of the connecting plate, and the triple deep holes are evenly distributed along the circumference of the connecting block, and the two mating sections of the connecting piece Put them into the corresponding deep holes and through holes of the connecting block and the connecting plate respectively.

Optionally, when the matching section at one end of the coupling piece is inserted into the triple deep hole of the coupling block, the matching section at the other end of the coupling piece is shifted into the corresponding triple through hole of the connecting plate.

Preferably, the first coupling block is provided with a hydraulic cylinder, and the hydraulic cylinders are evenly distributed along the circumference of the first coupling block; the second coupling block is provided with a protruding block, and the protruding block is inserted into the In the gap between the adjacent hydraulic cylinders; the hydraulic cylinder and the raised block are arc-shaped.

As a preference, any group of symmetrical through holes is provided with a shift hole and a key on the outer edge, the axis of the shift hole is perpendicular to the axis of the through hole, and the shift hole is located on the connecting plate. Side; the end of the connecting piece that cooperates with the connecting plate is provided with sawtooth.

Preferably, the key is cylindrical, the end of the key is gear-shaped, and the key can be inserted into the gear hole.

The utility model scheme has the following advantages:

In the coupling with adjustable threshold provided by the utility model, a flexible structure is arranged between the coupling blocks, and the flexible structure buffers the impact force of heavy load through the torsional elasticity of the coupling, and the second coupling When the rotational speed of the block and the first coupling block reach the same speed, the coupling returns to its original state, and the rigidity of its own material continues to drive the coupling block to rotate, and the coupling can properly adjust the threshold value, and the first coupling block and the The coaxiality requirements of the second coupling block allow appropriate deviations, and the coupling can be directly pulled out or inserted from the coupling plate to realize the disassembly and installation of the coupling; once the torque overload occurs, the coupling will be twisted immediately , the system stops running and protects the motor, thereby overcoming the defects that most couplings have high torsional rigidity, almost no threshold adjustment, high coaxiality requirements, and cumbersome installation and replacement processes.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure in the embodiment of the utility model.

Fig. 2 is a structural schematic diagram of the flexible structure in the embodiment of the utility model.

Fig. 3 is a structural schematic diagram of preferred variant A and variant B of the coupling in the embodiment of the present invention.

Fig. 4a is a schematic diagram of the structure of the triple through holes in another embodiment of the present invention.

Fig. 4b is a schematic structural view of triple deep holes in another embodiment of the present invention.

Fig. 5 is a schematic structural view of a hydraulic cylinder and a raised block in another embodiment of the present invention.

Fig. 6 is a schematic structural diagram of a shift hole in another embodiment of the present invention.

detailed description

The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings. Apparently, the described embodiments are part of the embodiments of the utility model, but not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, use a specific The azimuth structure and operation, therefore can not be construed as the limitation of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance. In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not constitute conflicts with each other.

As shown in Figure 1, the utility model provides a coupling with an adjustable threshold, including a coupling block 10 and a flexible structure 20, and the coupling block 10 includes a first coupling block 11 and a second coupling block 12, so The flexible structure 20 is located between the first coupling block 11 and the second coupling block 12 , and the deep holes 13 are evenly distributed along the inner circumference of the coupling block 10 .

The deep hole is cylindrical or keyed or conical locking. Cylindrical, keyed and conical locking have been widely used in the prior art, so details will not be repeated here.

As shown in Figure 2, the flexible structure 20 includes a connecting piece 23, a connecting plate 24 and through holes 25, the through holes 25 are evenly distributed along the circumference of the connecting plate 24, and the two ends of the connecting piece 23 are respectively inserted into In the deep hole 13 of the coupling block 10 and the through hole 25 of the coupling plate 24 . Among them, the flexible part of the flexible structure 20 is mainly the connecting plate 24. The flexible structure 20 can buffer the impact of heavy loads, reduce the coupling rigidity of the coupling, and directly pull out or insert the connecting piece 23 from the connecting plate 24. The disassembly and installation of the coupling is realized, and the installation and replacement are more convenient.

As shown in Figure 3, the coupling 23 can be two variants A and B, as shown in variant A, the coupling 23 is composed of a middle section 231 and two mating sections 232, the middle section 231 and the The two matching sections 232 have an included angle, and the angle formed by the middle section 231 and the matching section 232 can prevent the axis center of the first coupling block 11 and the second coupling block 12 from being too large, and does not affect For the flexibility of the flexible structure 20, the length directions of the two matching sections 232 are parallel.

As shown in Variation B, the coupling member 23 is composed of a middle section 231 and two matching sections 232 , the axis of the middle section 231 is in the same length direction as the two matching sections 232 . On the premise of not affecting the flexibility of the flexible structure 20 , the accuracy of the coaxiality between the first coupling block 11 and the second coupling block 12 can be slightly reduced.

The connecting piece is made of stainless steel, so that the connecting piece is resistant to oxidation and corrosion.

As shown in Figure 4a, the connecting plate 24 is provided with triple through holes 251 on its end face, and the three holes of the triple through holes 251 are adjacent to each other, and the triple through holes 251 are evenly distributed along the circumference of the connecting plate 24 ;

As shown in Figure 4b, the position of the connecting block 10 corresponding to the triple through hole 251 of the connecting plate 24 is provided with the same triple deep hole 151, and the triple deep hole 151 is evenly distributed along the circumference of the connecting block 10, so The two mating sections 232 of the coupling piece 23 are respectively inserted into the corresponding deep holes and through holes of the coupling block 10 and the coupling plate 24 .

In another embodiment, when the matching section 232 at one end of the coupling piece 23 is inserted into the triple deep hole 151 of the coupling block 10, the matching section 232 at the other end of the coupling piece 23 is shifted into the coupling In the triple through hole 251 corresponding to the plate 24, the torsional elasticity of the coupling member 23 is increased.

As shown in Figure 5, in another embodiment, the first coupling block 11 is provided with hydraulic cylinders 14, and the hydraulic cylinders 14 are evenly distributed along the circumferential direction of the first coupling block 11; 12 is provided with a protruding block 15, and the protruding block 15 is inserted into the gap between the adjacent hydraulic cylinders 14; the hydraulic cylinder 14 and the protruding block 15 are arc-shaped. When the coupling block 10 rotates, the hydraulic cylinder 14 will give a buffer force to the protruding block 15, so that the first coupling block 11 and the second coupling block 12 will not be in rigid contact.

As shown in FIG. 6 , in another embodiment, any set of symmetrical through holes 25 is provided with a shift hole 252 and a key 253 on the outer edge, and the axis of the shift hole 252 is perpendicular to the through hole 25 The axis of the gear hole 252 is located at the side of the connecting plate 24; the end of the connecting piece 23 and the connecting plate 24 is provided with serrations; the key 253 is cylindrical, and the end of the key 253 is Gear-shaped, the key 253 can be inserted into the shift hole 252 . The extension of the coupling 23 can be adjusted by turning the key 253. The longer the extension of the coupling 23, the better the flexibility, and the shorter the extension of the coupling 23, the less flexible it is. softness.

Claims (8)

1. a kind of shaft coupling of adjustable thresholding, including coupling block and flexible structure, it is characterised in that

The coupling block include the first coupling block and the second coupling block, the flexible structure be located at first coupling block with it is described Between second coupling block, deep hole is uniformly distributed along the inner circumferential of coupling block；

The flexible structure includes connector, gusset piece and through hole, and the through hole is uniformly distributed along the circumference of gusset piece, described The two ends of fitting are respectively implanted in the through hole of the deep hole of the coupling block and the gusset piece.

2. a kind of shaft coupling of adjustable thresholding according to claim 1, it is characterised in that

The flexible structure is made up of multiple connectors, and connector section with interlude and two is constituted, the centre Section has angle with described two cooperation sections, and the length direction of described two cooperation sections is parallel.

3. a kind of shaft coupling of adjustable thresholding according to claim 2, it is characterised in that

Connector section with interlude and two is constituted, the axis of the interlude and the length of described two cooperation sections Direction is identical.

4. a kind of shaft coupling of adjustable thresholding according to claim 1, it is characterised in that

The gusset piece is provided with three linked holes in its end face, and three holes of three linked hole are adjacent two-by-two, three linked hole It is uniformly distributed along the circumference of gusset piece；The position of the coupling block correspondence three linked hole is provided with three deep holes, described three Circumference of the deep hole along the coupling block is uniformly distributed, and two of the connector coordinate section to be respectively implanted the coupling block and described In the corresponding deep hole of gusset piece, through hole.

5. a kind of shaft coupling of adjustable thresholding according to claim 4, it is characterised in that

When the one end fits section of the connector is inserted in three deep holes of the coupling block, the other end of the connector is matched somebody with somebody The wrong position of section is closed to enter in corresponding three linked hole of the gusset piece.

6. a kind of shaft coupling of adjustable thresholding according to claim 1, it is characterised in that

First coupling block is provided with hydraulic cylinder, and circumference of the hydraulic cylinder along first coupling block is uniformly distributed；Described Two coupling blocks are provided with protruding block, and the protruding block is inserted in the space between the adjacent hydraulic cylinder；The hydraulic cylinder with it is described Protruding block is circular arc.

7. a kind of shaft coupling of adjustable thresholding according to claim 1, it is characterised in that

The outer rim of any group of symmetrical through hole is provided with gear hole and key, and the axis of the gear hole is perpendicular to the through hole Axis, the gear hole be located at the gusset piece side；The connector is provided with sawtooth with one end that gusset piece coordinates.

8. a kind of shaft coupling of adjustable thresholding according to claim 7, it is characterised in that

The key is cylinder, and the end of the key is gear shape, and the key is inserted in the gear hole.