CN101649867B - Ball-joint pinrod coupling - Google Patents

Abstract

The invention discloses a ball-joint pinrod coupling which comprises half couplings, a float ring and a ball-joint pinrod. The float ring is arranged outside the half couplings, the ball-joint pinrod comprises a pinrod, at least three ball joints are arranged on the pinrod, and an inner spherical bearing sleeve is arranged on each ball joint, wherein at least one ball joint is connected with the float ring by the inner spherical bearing sleeve, two ball joints are respectively connected with two half couplings through the inner spherical bearing sleeve, and the inner spherical bearing sleeve is connected with the float ring in a sliding way; an isolation pad ring is arranged between the half couplings and the float ring; end connecting threads are arranged at two ends of the pinrod, and a nut and an elastic pad are arranged on the threads. Compared with the prior art, the ball-joint pinrod coupling has the advantages of low cost, comprehensive functions and easy manufacturing, can substitute for other couplings which are same as the ball-joint pinrod coupling on the functions, such as drum tooth-type couplings, and the like, has certain flexibility as well as obvious cushioning and damping effects and is easy to realize the manufacturing of large-scale and superlarge flexile couplings.

Description

Ball-joint pinrod coupling

Technical field

The present invention relates to a kind of coupling, particularly a kind of ball-joint pinrod coupling.

Background technique

Coupling is to connect diaxon or axle and revolving meber, revolution and a kind of device of not throwing off is the big universal component of application quantity in the machinery drive line together in transmitting mechanical motion and energetics.Being used for the coupling of machinery drive line such as metallurgy, mine, oil, chemical industry, boats and ships, traffic, weaving, lifting transportation, agricultural, light industry, water pump, blower fan, lathe, mainly is transmitting torque; Being applied to the coupling of precision optical machinery and some manipulation, control mechanism, mainly is to transmit accurate movement.Coupling is divided into drum-shaped tooth type shaft coupling, rigid coupling, elastic coupling flexible coupling, cross universal coupling etc., and wherein drum-shaped tooth type shaft coupling Applicable scope is big, and General is good, is widely used.

Along with science and technology development, to the constantly new requirement of proposition of function of coupling.Flexible coupling is most important one a big class in the coupling.Especially adopt metal, rubber, engineering plastics and composite material etc. to make couplings elastic elements, further satisfy coupling buffering, vibration damping, reduction noise, raise the efficiency, save the energy, the displacement of compensation two axial lines, increase work reliability, satisfy the requirement of rigidity and lagging characteristic.Unfavorable factors such as mechanical vibration in drive line, impact, misalignment of axe can improve and compensate by coupling.

The shortcoming of existing coupling is that the rigidity of rigid coupling is excessive; Flexible coupling flexible excessive.Buffering, damping effect reduced or disappearance when the coupling rigidity was excessive; Flexible coupling is crossed behind the large dead time obviously, and transmission efficiency reduces, and the error code phenomenon is serious when transmitting signal.Existing coupling cost is higher, and is many with material, the process for machining and manufacturing complexity, and the special device that also must use that has is processed, and needs special purpose machine tools such as gear hobbing machine, gear shaping machine as drum-shaped tooth type shaft coupling.Technological scheme manufacturing process when making large-scale and super sized type flexible coupling of using existing coupling is very difficult.

Summary of the invention

The present invention provides the ball-joint pinrod coupling that a kind of cost is low, function complete, make easily in order to solve the deficiencies in the prior art.

The technical solution adopted for the present invention to solve the technical problems is: a kind of ball-joint pinrod coupling, comprise half-coupling and floating ring, ball-joint pinrod, described half-coupling is provided with floating ring outward, described ball-joint pinrod comprises pin rod, described pin rod is provided with at least three ball-joints, described ball-joint is provided with the inner ball surface bearing housing, wherein, have at least a ball-joint to be connected with floating ring by the inner ball surface bearing housing, two ball-joints are connected with described half-coupling by the inner ball surface bearing housing, and described inner ball surface bearing housing and floating ring are for being slidingly connected.

Be provided with the dottle pin ring between described half-coupling and the floating ring.

Described pin rod two ends are provided with the end connecting thread, on the described screw thread nut are installed.

One side of described nut is provided with cushion.

Described pin rod two ends are provided with locking iron wire hole.

Compared with prior art, ball-joint pinrod coupling of the present invention has the advantage that cost is low, function complete, make easily, can substitute the coupling of other identical function, as drum-shaped tooth type shaft coupling etc., ball-joint pinrod coupling has certain flexible, buffering and damping effect are obvious, and realize making large-scale and superhuge flexible coupling easily.

Description of drawings

Fig. 1 is the structural representation of ball-joint pinrod coupling of the present invention;

Fig. 2 is the sectional view of ball-joint pinrod coupling of the present invention;

Fig. 3 is the left view of Fig. 2;

Fig. 4 is the plan view of floating ring;

Fig. 5 is the left view of floating ring;

Fig. 6 is the structural representation of ball-joint pinrod

Fig. 7 is the sectional view of inner ball surface bearing housing plan view;

Fig. 8 is the left view of inner ball surface bearing housing.

Among the figure: 1. half-coupling, 2. floating ring, 3. ball-joint pinrod, 3.1. ball-joint, 3.2. pin rod, 3.3. screw thread, the locking iron wire of 3.4. hole, 4. inner ball surface bearing housing, 5. dottle pin ring, 6. cushion, 7. nut.

Embodiment

The invention will be further described below in conjunction with accompanying drawing.

Referring to Fig. 1 and Fig. 2, be distributed with the hole of equal number on half-coupling 1, dottle pin ring 5 and the floating ring 2, ball-joint pinrod 3 passes from its corresponding aperture center, be with inner ball surface bearing housing 4 on each ball-joint 3.1 on the ball-joint pinrod 3, dottle pin ring 5 dottle pins are between half-coupling 1 and floating ring 2, the nut 7 at ball-joint pinrod 3 two ends couples together each parts by cushion 6, forms ball-joint pinrod coupling integral body.

Because the ball-joint 3.1 on the ball-joint pinrod 3 constitutes the joint shaft bearing effect with inner ball surface bearing housing 4, therefore ball-joint pinrod 3 obtains the activity space of certain position, and then make two half-couplings 1 obtain the activity space of certain position, realize that ball-joint pinrod coupling is flexible, the function of vibration damping, transmission.

Referring to Fig. 3 and Fig. 4, each pin-and-hole distribution circle diameter of maintenance that floating ring 2 main effects are rigidity is constant, thereby the invariant position of corresponding ball-joint on distribution circle that keeps each ball-joint pinrod, simultaneously, floating ring 2 also in company with the activity of each ball-joint pinrod together necessarily movable among a small circle, the connection because floating ring is not fixed, and center-hole diameter Φ b is greater than the diameter of phi a on the half-coupling, floating type activity is in the restriction that necessarily is not subjected to half-coupling among a small circle.

Referring to Fig. 5, ball-joint pinrod 3 is made of pin rod 3.2, ball-joint 3.1, two ends connecting thread 3.3 and locking iron wire hole 3.4, after the installation, bolt connects locking iron wire, and locking iron wire penetrates in the locking iron wire hole, prevent that nut from getting loose, ball-joint 3.1 is arranged on the pin rod 3.2, and the ball-joint 3.1 on the ball-joint pinrod 3 can be more than three, but can not be less than three, the elastic floating that is assembled into of ball-joint pinrod 3 connects, and axial relative displacement can be arranged.

Referring to Fig. 6, Fig. 7 and Fig. 8, the inner ball surface of inner ball surface bearing housing 4 and external cylindrical surface, respectively with ball-joint pinrod on the ball-joint outer spherical surface and the pin-and-hole inner cylindrical surface on the half-coupling, floating ring be slidingly connected.

Technological scheme of the present invention is that the inner ball surface bearing housing is combined with pin rod, constitutes to have certain flexible ball-joint pinrod coupling.Ball-joint pinrod coupling allows connected two transmission shafts that certain disalignment error, vibration and axial float are arranged.Nut on the ball-joint pinrod by cushion with the ball-joint pinrod relative fixed among half-coupling, floating ring, the elastic floating that makes ball-joint pinrod have axially relative displacement connects; What ball-joint pinrod coupling was used is lever principle, same ball-joint pinrod has a ball-joint at least respectively in the respective pin hole of two half-couplings and a floating ring, constitute power point, fulcrum and the resistance point of lever principle, so have the ball-joint of 3 outer spherical surfaces on each ball-joint pinrod at least.

Above-described embodiment, the present invention embodiment a kind of more preferably just, the common variation that those skilled in the art carries out in the technical solution of the present invention scope and replacing all should be included in protection scope of the present invention.

Claims (5)

1. ball-joint pinrod coupling, it is characterized in that, comprise half-coupling and floating ring, ball-joint pinrod, described half-coupling is provided with floating ring outward, and described ball-joint pinrod comprises pin rod, and described pin rod is provided with at least three ball-joints, each described ball-joint is provided with the inner ball surface bearing housing, wherein, have at least a ball-joint to be slidingly connected by inner ball surface bearing housing and floating ring on it, at least two ball-joints are connected with two half-couplings respectively by the inner ball surface bearing housing on it in addition.

2. ball-joint pinrod coupling according to claim 1 is characterized in that, is provided with the dottle pin ring between described half-coupling and the floating ring.

3. ball-joint pinrod coupling according to claim 1 and 2 is characterized in that, described pin rod two ends are provided with the end connecting thread, on the described screw thread nut are installed.

4. ball-joint pinrod coupling according to claim 3 is characterized in that, one side described nut be provided with cushion.

5. ball-joint pinrod coupling according to claim 3 is characterized in that, described pin rod two ends are provided with locking iron wire hole.

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