CN202048115U - Pin type coupler - Google Patents

Abstract

The utility model discloses a pin type coupler, which comprises a pair of half couplers and a pin. The pin penetrates through pairing holes of the two half couplers and comprises a hole pin, a dowel and a dowel positioning part, the hole pin is made of non-metal materials, an inwards concave cambered surface is arranged on the surface of a middle section of the hole pin, a pin hole is arranged in the hole pin, and one end of the dowel penetrates through the pin hole and is positioned with the hole pin via the dowel positioning part. When the coupler is in complementary deviation, as the surface of the middle section of the hole pin is the concave cambered surface, the surface of the middle section of the hole pin and the corresponding pairing holes keep certain distances, contact abrasion is avoided, and accordingly breakage of the pin is avoided. In addition, the dowel is made of metal materials, so that the strength of the total pin can be increased.

Description

The pin-type load coupling

Technical field

The utility model relates to coupling, more particularly, relates to a kind of pin-type load coupling.

Background technique

Existing pin-type load coupling 10 structures as shown in Figure 1 and Figure 2, the pin 11 that several nonmetallic material are made places the involutory hole 13 of two half-couplings 12, realizes the connection of two half-couplings 12 by pin 11 transmitting torques.The performance of this coupling 10 and characteristics are applicable to medium and more high-power transmission, have the performance of certain compensation diaxon mal-alignment.But,, make after the generation off normal, to contact with pin 11 just because of realizing off normal, make pin 11 form fatigue wear, directly aggravate shearing stress, the probability of pin 11 fractures significantly rises under the effect of impulsive load, cause its working life lower, maintenance cost is higher.

The model utility content

At the above-mentioned shortcoming that exists in the prior art, the purpose of this utility model provides a kind of pin-type load coupling, can avoid pin to be subjected to shearing stress and ruptures.

For achieving the above object, the utility model adopts following technological scheme:

This pin-type load coupling comprises a pair of half-coupling and passes the pin in the involutory hole of two half-couplings, described pin comprises hole pin, pin and pin locating piece, the hole pin is nonmetallic material, section surface is inner concave arc surface in the middle of it, have a pin-and-hole in the pin of hole, pin one end passes pin-and-hole, and locatees mutually with the hole pin by the pin locating piece.

Described pin locating piece comprises pad and cotter pin, and pad is sheathed on the traversing through end of pin and with hole pin end face and pastes mutually, and cotter pin is radially passed the traversing through end of pin and tightened pad.

The twice arc of described concave arc surface is 1/10th of pin diameter deeply.

Described pin-and-hole is a fine copper.

In technique scheme, pin-type load coupling of the present utility model comprises a pair of half-coupling and passes the pin in the involutory hole of two half-couplings, described pin comprises hole pin, pin and pin locating piece, the hole pin is nonmetallic material, section surface is inner concave arc surface in the middle of it, have a pin-and-hole in the pin of hole, pin one end passes pin-and-hole, and locatees mutually with the hole pin by the pin locating piece.When the compensation off normal takes place in coupling, because hole pin scala media section surface is concave arc surface, therefore can keep certain distance with corresponding involutory hole, can not come in contact wearing and tearing, avoided pin to rupture.In addition, by the pin of metallic material is set, can improve the intensity of whole pin.

Description of drawings

Fig. 1 is the structural representation of the pin-type load coupling of prior art;

Fig. 2 is the A portion enlarged view among Fig. 1;

Fig. 3 is the structural representation of pin-type load coupling of the present utility model;

Fig. 4 is the sectional view of pin of the present utility model;

Fig. 5 is the decomposing schematic representation of pin of the present utility model;

Fig. 6 is the A portion enlarged view among Fig. 3.

Embodiment

Further specify the technical solution of the utility model below in conjunction with drawings and Examples.

See also Fig. 3～shown in Figure 5, pin-type load coupling 20 of the present utility model comprises a pair of half-coupling 21 and passes the pin 22 in two half-couplings, 21 involutory holes 23, described pin 22 comprises hole pin 231, pin 232 and pin locating piece, hole pin 231 is nonmetallic material, generally can adopt nylon material, section surface is inner concave arc surface 233 in the middle of it, have a pin-and-hole 234 that is complementary with pin 232 in the hole pin 231, pin 232 1 ends pass pin-and-hole 234, and locate mutually with hole pin 231 by the pin locating piece.Described pin locating piece comprises pad 235 and cotter pin 236, and pad 235 is sheathed on the traversing through end of pin 232 and sells 231 end faces with the hole and paste mutually, and cotter pin 236 is radially passed the traversing through end of pin 232 and tightened pad 235.Through test of many times and calculating, the arc of described concave arc surface 233 is designed to deeply: the arc of twice is 1/10th of whole pin diameter deeply.In addition, described pin-and-hole 234 is selected metallic material, preferable is the high fine copper of plasticity poor toughness intensity hardness, can improve whole pin 22 shear-stable intensity, with the be hit destructiveness of load of alleviation.

Please in conjunction with shown in Figure 6, after the compensation off normal takes place in coupling 20, because the hole is sold 231 scala media section surfaces and is concave arc surface 233, therefore can keep certain distance with corresponding involutory hole, can not come in contact and form fatigue wear, avoid pin 22 to rupture, prolong the working life of pin 22, reduce engineering time, effectively guaranteed the proper functioning of coupling 20.

Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the utility model, and be not to be used as qualification of the present utility model, as long as in connotation scope of the present utility model, all will drop in claims scope of the present utility model the above embodiment's variation, modification.

Claims (4)

1. a pin-type load coupling comprises a pair of half-coupling and the pin that passes the involutory hole of two half-couplings, it is characterized in that:

Described pin comprises hole pin, pin and pin locating piece, and the hole pin is nonmetallic material, and section surface is inner concave arc surface in the middle of it, has a pin-and-hole in the pin of hole, and pin one end passes pin-and-hole, and locatees mutually with the hole pin by the pin locating piece.

2. pin-type load coupling as claimed in claim 1 is characterized in that:

Described pin locating piece comprises pad and cotter pin, and pad is sheathed on the traversing through end of pin and with hole pin end face and pastes mutually, and cotter pin is radially passed the traversing through end of pin and tightened pad.

3. pin-type load coupling as claimed in claim 1 is characterized in that:

The twice arc of described concave arc surface is 1/10th of pin diameter deeply.

4. pin-type load coupling as claimed in claim 1 is characterized in that:

Described pin-and-hole is a fine copper.

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