JPS61270524A - Cross shaft joint - Google Patents

Abstract

PURPOSE:To contrive to lower the cost and to improve the strength by inserting both a radial metal and a thrust wear plate which has a thrust metal attached and is inserted spirally in the outward of a radial metal, into a insertion hole which is formed in the arm part of a yoke body. CONSTITUTION:A yoke body 1 has two couples of arm parts 1-a which are so projected and formed as to oppose each other and at a insertion hole 12 which is formed in each arm part a radial metal 3 is stopped by a difference part in level 12-b. And a nearly discoid thrust wear plate 4, being positioned against the shaft end face 2-d of a shaft part 2-b in the yoke body 1, is so inserted spirally as to cover the insertion hole 12 and is inserted doubly to an end of the radial metal 3 against the inside of a thread part 12-a of the insertion hole 12 and is whirl-stopped with a whirl-stop bolt 6.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a cross-shaft joint applied to iron-making machines, T-machines, etc.

(Prior Technology) Conventionally, single-nolock type and fork-type 11-shape shaft joints, which house a stick-shaped summer cola inside a bearing case and are equipped with an I-roll/pivot type bearing, have been widely used.

(Problems to be solved by the invention) In the case of the conventional 11-shape joint, the J is (a) due to the surface hardening treatment of each member constituting the bearing.

([]) Under high direction loads, breakage of 1]-R due to the action of V]- and surface fatigue due to 1ull breakage due to high Hertz stress are likely to occur.

(c) If the space occupied by the bearing in the bearing part is large, the effective surface of the yoke part will be reduced (the strength of the curved part will be reduced).

(d) Since the bearing case is fixed with bolts, it is easy for the holes 1 to 1 to loosen or break easily due to photographing under high load.

(e) The bearing case is deformed due to the closing clause () of Pol 1~, and the radial spacing becomes too small (-) (The life of the bearing is shortened.

(f) Refueling mencipens becomes a square box.

Is there a problem with this?

The present invention's [1st f, L initial 1st l-o] and repair: It is possible to save 1 stroke, improve the strength characteristics, and
Another object of the present invention is to provide a hinge-type wheel joint that reduces the maintenance f-number.

(Means for resolving the problem) The present invention f, L f] - 1 j?
In order to insert the shaft part of the shaft, it is loaded into the insertion hole 13.
1. In order to fit the shaft part in a sliding manner, the front iil'!
A radial metal fitted into the matchmaker hole and a thrust metal for slidably holding the 1t11 shaft end in close contact with the shaft end surface of the shaft portion, and 1lFl 1Ilu
The slugs 1 to 3 screwed into the outer part of the metal in the insertion hole are connected to the plate, and the gist is a 1-shaped ring joint.

(Function) The cruciform joint of the present invention restrains the shaft portion of the 1-shaped ring in the 5th direction of the cylindrical sliding bearing in the v1 radial direction while maintaining an appropriate clearance. When it is supported on the shaft part, screw the plate into one place on the shaft end surface of the shaft part. Place a disk-shaped sliding bearing closely on the shaft end surface of the shaft part 1 Slide the shaft part in a circular to circular sliding bearing l C while restraining it in the axial direction!II/l
I support Noh, and I compose myself.

(Example) Next, the embodiments of the present invention will be explained in the following sections.

Cross shaft joint, Jf/) El-ri main body 1 (, 1 each protrudingly formed opposite to each other/,: 2 pairs of arm portions la
A driving shaft or a driven shaft (not shown) is inserted into the center of the shaft hole 11). Each insertion hole 12 is stepped, and furthermore, a threaded portion 12a is formed in a step shape near the lA radius:fζ1 of this insertion hole 12.

The 1-shape shaft 2 formed in the 1-shape is located near the central part I.
4' shafts 61 are formed in a unical shape and are respectively formed in a rotationally symmetrical manner of 90 degrees through the root part 2C and protrude in the sea lion hole 12 of the yoke body 1. (Equipped with 2b, corrosion resistant fl, abrasion resistant 111. For lubricant resistant bamboo, etc., one stage of soft nitriding treatment etc.)
It has been surface hardened.

Radial metal coil 31 formed in a cylindrical shape
The thickness ratio t/d between and the thickness of ~1 is in the range of 0.1 to 015 yt+
, and the shaft part 21 of the 1-shaped shaft 2 is slidably fitted with an appropriate clearance (for supporting the dowel pin 9 etc.). Yoke body 1
The step part 12 ( ) of the insertion hole 12 is inserted through the 7 flange 3 d ( ) which is turned around 1 and protruded from the outer edge of the 7 flange 3 d .
), and on its inner circumferential surface there are e (') on both sides from the center of the radial metal 3, with the offset position being the center, respectively.
The inner peripheral surface of the radial metal 3 is curved with the radius d/2 as the radius of curvature, and the groove depth gradually decreases from the maximum depth e to O or C from the anti-load side to the load side. When the first curved groove 3a formed in the L-plane circular shape is recessed along the circumferential direction, the second oil groove 3b, which is orthogonal to the first oil groove 3a, is formed along the axial direction. A third oil filler 3G into which the ring-shaped oil-impregnated seal member 11 is inserted is roughly recessed near the inner end of the inner circumferential surface and parallel to the first curved groove 38. .

The shaft end surface 2 (approximately disc-shaped thrust receiving plate opposite to 1) of the shaft portion 2b is screwed into the threaded portion 12a of the JIlj entry hole 12 so as to cover the h1 manhole 12 ( The heavy liquid flows toward the tip of the radial metal 3, and the surrounding area a]
The screws are screwed into screw holes 13 assembled nearby, and the tips are inserted into a plurality of locking holes 3e recessed in the outer end of the radial metal 3.
1 and 11 which are selectively engaged] - The rotation is stopped by 6.

A circular plate-shaped thrust metal! -i t, i 1- In order to closely contact the shaft end surface 2d of the shaft portion 2b of the C-shaped ring 2 and to hold the C shaft portion 2b so that it cannot freely move in the axial direction but can slide, the slots 1 to 1 ( ) is attached to the inner end surface of the plate 4, and is integrally fixed to the root 4 with an appropriate number of dowel pins 8.

Then, the thrust metal 5 connects the thrust 1 to the receiving plate 4.
- Close to the shaft end surface 2 ( ) of the character ring 2 * Adjust the knee C screw and use the locking bolt 6 to determine the position 1G, then the thrust 1
- An axial gap A is formed between the no-funge 4d provided around the outer edge of the J plate 4 and the outer end surface of the arm portion 1a of the yoke body 1, and when the thrust metal 5 wears out, the thrust metal 5
~When screwing the support () root 4, -〇 - (J//1 seal gap A or decrease, check the wear condition and replacement time of jlt shift full gap AI/sufst metal 5).
1.1 Shaft part 21) and the radial metal; 3. The wear condition of the radial metal 3 can be determined by the nozzle gap + (C) formed in the nozzle gap + (C).

The grease nipple 7 is screwed into the center of the plate 4 of the sluice 1 to the receiver 1 in order to supply oil to the abrasive interface between the shaft end face 2d, the smooth metal 5, and the sliding interface between the shaft 2 and the radial metal 3. Then, near the shaft end A-1 of the J1 shaft part 2b [
1 When the coaxial part 2b is pushed up against the radial metal 3, screw in the bolt.
The screw hole 15 which also serves as ~ is recessed 89.

Next, the operation and effect of the embodiment having the configuration described in 1 will be explained 4.
Ru.

Now, in this example, 1. In order to insert the shaft part 2b of the cross shaft 2 into the arm part 1a of the L yoke main body 1, there is a protrusion (into the cut insertion hole 12, the shaft part 2b is rotatably fitted).
In this insertion hole 12), the saw radial metal 3 and the coaxial end surface 2 (1) are fixed in close contact with the shaft end surface 2d of the shaft portion 2b so that they cannot move in the axial direction. A thrust holder IJ 4Ji4 etc. is attached to the radial metal 3 and screwed into the threaded portion i 2 B of the insertion hole 12 on the outside of the radial metal 3.

Therefore, the shaft part 2 of the one-chamber shaft 2 can be restrained in the radial metal 3, 1J, 1J, and 5C diametrical and axial directions, and can be supported in a rolling manner, simplifying the bearing structure. Cross-shaft joints that can be converted into rolling bearings, and surface hardening treatments such as immersion quenching, which are required for shafts and bearing cases when rolling bearings are used, are not required. This has the effect of significantly reducing initial strikes.

In addition, in order to reduce the speed of the bearing part H and reduce the space occupied by the bearing member, the diameter of the insertion hole 12 is reduced.
By increasing the effective cross-sectional area of the arm portion 1a, it is possible to improve the strength of the arm portion 1a.

In particular, axial gaps A, J> and fusial gaps B
This allows you to easily check the wear status and replacement timing of the thrust 1 to metal 5 and radial metal 3, and eliminates damage and malfunction of the cross shaft joint J due to delayed replacement of the bearing H. In addition to being able to stably and rotatably support the cross shaft 2, maintenance work such as oiling, repair, and replacement can be reduced and simplified.

Furthermore, since the tightening of the bearing member by bolts can be eliminated, deformation of the bearing member and excessive h [F] on the shaft can be avoided, and the problem of incorrect carts being applied to the bearing part I or the shaft can be avoided. can be eliminated.

(Effects of the Invention) That is, the present invention provides a method for slidingly fitting the shaft portion into the insertion hole protruding from the insertion hole of the cross shaft into the arm portion of the yoke body. A radial metal fitted into the insertion hole, and a high-alignment radial metal fitted into the insertion hole, and a slug 1 to metal for holding the coaxial end surface in close contact with the shaft end surface of the shaft portion so that the coaxial end surface can slide. By applying a heavy liquid to the thrust bearing GJ plate screwed onto the outside of the metal, it is possible to save the initial 1 full width 1 1~ of the ten-chamber shaft joint, reduce the number of maintenance steps, and reduce the number of bearings. It has the effect of improving the strength of special bamboo in the parts of the body.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, so FIG. 1 is a longitudinal sectional view of the main part, FIG. 2 is a sectional view taken along the line X-X in FIG. 1, and FIG. 4 is a plan view of the radial metal, and FIG. 5 is a longitudinal cross-sectional view. 1... Yoke body 1a... Arm part 2... Cross shaft 2b... Shaft part 2d... Shaft end face 3... Radial metal 4... Thrust receiver Il plate 5... Thrust] Hemmetal 12...Insertion hole, J...Cross shaft joint

Claims (1)

[Claims] A radial metal fitting is inserted into the insertion hole for inserting the shaft portion of the cross shaft into the arm portion of the yoke body in order to slidably fit the shaft portion. and a thrust receiving plate having a thrust metal closely attached to the shaft end surface of the shaft portion to slidably hold the coaxial end surface and screwed onto the outside of the radial metal in the insertion hole. A cruciform joint characterized by a heavy fit.