JPS5828051A - Reduction worm gear - Google Patents

Abstract

PURPOSE:To efficiently conduct scattered lubricating oil to a bearing body conducting lubricating oil from a hollow oil catcher mounted on an opening portion of the upper end wall of a gear case to a bearing through a pipe disposed on the outside of the gear case. CONSTITUTION:An oil catcher 15 is fitted to an upper end wall opening portion 14 of a gear base 1 from outside. The oil catcher 15 is a hollow box provided with a cover 15a on the upper surface thereof and with an inlet 15b for lubricating oil opened at the lower central part. A weir 15c is projected on the upper edge of the inlet 15b. An oil sump portion 15d is formed in the interior of the oil catcher. A pair of oil pipes 16 are connected to a pipe connecting opening 15e opened to the outer peripheral wall of the oil sump portion 15d. Both oil pipes 16 respectively pass outside of the gear case 1 and pierce outside covers 6, 7 to be connected to each interior of bearing mount holes 1a of a worm shaft 4.

Description

[Detailed description of the invention]

This invention relates to a worm mold removal machine for elevators, etc.
211.1 It is also related to the worm reduction mode of the structure. Generally, a worm reducer with a t-connection configuration has a speed of 1:t. Since the worm shaft rotates at high speed, it is necessary to always supply a stable dynamic slide 71j1 to its bearing. Since it is not immersed in the lubricating oil inside the gear case, the lubricating oil in the gear case area is normally flowed through the meshing rotation between the worm wheel and the worm, and is scattered from both directions to the bearing of the worm shaft from the inside of the gear case. Figure 1, Figure 2, and Figure 3 show the conventional worm deceleration system...) To simply explain, Figure 1 shows the gutter type.
Lower part 1 of gear case 1: A worm wheel 2 is pivotally supported, and a worm 3 is rotated in a direction orthogonal to the worm shaft 4 (which is pivotally supported from 2). The worm shaft 4 is supported by a bearing 5.5 installed in the mounting hole 15.Ia of the gear case 1. Note that 6.7 is the outer lid of the mounting hole 1a, Ia. In addition, a oil supply port 8 is formed in the center of the upper end wall of the gear case 1, and in normal times it is closed from a lid 9 (two sides). , approximately the lower half of the worm wheel 2 is immersed in the lubricating oil 10. Here, a gutter 11.11 is attached to the upper part of the gear case 1. When the lubricating oil is scattered in the direction t due to the meshing rotation of the worm wheel 2 and the worm 3, the scattered lubricating oil is received in the gutter 11, 11 and guided to the bearings 5, 5 of the worm shaft 4; Also, Figures 2 and 3 are of the groove blade type.■ A worm reducer having the same configuration as that shown in Figure 1 has protrusions 12 with a cross-sectional shape on both upper side surfaces of the gear case 1. ..1
The lubricating oil 10 scattered in one direction due to the meshing rotation of the worm wheel 2 and the worm 3 is received in the grooves 13 and 13, and the groove 13 is formed by integrally molding the worm wheel 2 and the worm 3. Bearing (S 5, 5 bottom part < j 2 (21)
．． Teshi 1ro. 1. However, the conventional worm reducer mentioned above had the following drawbacks as shown in the table of contents. Junki i1b scattered towards the inside
Since the conduction is only carried out from the inside of the gutter 1 to the bearing 5, the gutter 1] end or 1it
Lubricating oil enters the inside of the bearing 5 from the I 3 lip (7″
Gear case 1 fell due to vibration etc. at T road 1111.
The lubricant often falls into the inner jacket, and for this reason, it is necessary to maintain stable lubricant supply when υ1<, and the inner assembly may cause damage to the bearing 5. Disadvantages (2) In addition, in the former &+J type, the drain 11,
Since part 11 must be installed, the assembly of part 7 is a national disaster. . Furthermore, the installed gutter 11 may vibrate, etc.

[If the product becomes looser than the second one and becomes misaligned, droops, or comes off. The end of the gutter 11 may come in abnormally close contact with the bearing 5I, damaging the bearing 5, or conversely, the gap may be too large, making it impossible to refuel at all, or the worm wheel 2
If it gets caught in the meshing part between the worm and the worm 3, it may damage them or cause a major accident. Therefore, the gutter 11 must be fixed to the gear case 1 at a predetermined position (accurately and firmly).
Not only is the M construction complicated, but the installation work is also more labor intensive and needs to be erected. In other words, the structure was complicated and there was an overhead that led to an increase in size and cost.On the other hand, in the case of the t:h type with one minor, as mentioned above, there was a hassle of arranging separate parts. Although no work is required for installation, since the gear case 1 is an ordinary casting, the shape of the reservoir 13 integrally molded on its inner wall becomes complicated, which increases manufacturing difficulties and reduces productivity. This will lead to higher costs. Also, since it is a cast product, the shape of the groove 13 is subject to restrictions, and it is important to select a shape that is suitable for efficiently guiding the scattered lubricating oil to the bearing 5I.
1: Since it is integrally molded, it is difficult to assemble it.
+jr: JAI adjustment was not possible, and the oil supply performance was low and reliability was poor during jXf and I. This invention was regarded as ff1i in 1n self tFj blue. The purpose of this is to efficiently pass through the sliding fluid that is splashed upwards inside the gear case to the bearing, and to provide stable and stable refueling. The configuration allows for easy assembly in a cylinder, making the device more compact and reducing costs, making it extremely practical and reliable. To provide a worm reducer with a high capacity of 1 unit (2).In other words, this invention has a t#, 'H wall opening of the gear case which has been used to scatter the oil. The receiver is installed by fitting the body into the gear case, and the oil pipe is installed through the outside of the gear case, or inside the gear case wall thickness C:
By forming the ura channel. 1. The oil receiver conducts the oil inside the body into the right hole of the worm shaft bearing of the gear case, so that the bearing can be lubricated.
It is characterized by two reduction gears. A practical example of this invention will be explained below with reference to FIGS. 4 and 5. Components having the same configuration as those shown in FIGS. 1 and 2 above are designated by the same reference numerals in the drawings to simplify the explanation. Therefore, the gear case 1 has no conventional gutter or groove on its inner surface, and an opening 14 is formed on the upper end wall to serve as an oil supply port for the lubricating oil 10 into the gear case 1. It is a structure. Here, the body 15 of the oil pan is attached by fitting the T end wall opening 14 of the gear case 1 (2) from the outside to the bottom. 15a, and has a lubricating oil inlet ISB at the center of the bottom, and an oil sump with a U cross section by protruding the weir 150 to an appropriate height. Inside Miyako 75d (
It is said to have a two-component structure. The oil receiver body 15 is connected to the outer peripheral wall of the oil reservoir part J5d by a pipe rl 15
e, open 156 [211. It's okay. Also, the t-face lid body 1
5a is slanted in a chevron pattern. These oil pans I-) Body 15: One pair of oil pans for two! Goo 6.16 is installed. The inner oil pipes 16, 16 & -1 are arranged on the outside of the gear case 1; one end of the oil receiver is connected to the hose connections 15e and 15e of the body 15, and the other end is connected to the worm shaft 4 of the gear case 1. The bearing is in the mounting hole 7a. The outer lid bodies 6 and 7 are connected to each other in the Ja. Thus,] - in the worm reducer with the above configuration. Meshing rotation of worm wheel 2 and worm 3: 1:1
A part of the oil splashed to one side enters the bottom entry port J5t of the body 15, and the oil pan jumps into the body 15, and immediately hits the upper lid body 15aτ2. .The 71Wj glide that hit the seventh body J 5 a C is mostly attached to the contracted body 15a due to its high viscosity. The lubricating oil flows and collects in the oil reservoirs 15d and 15dC.Then, the collected lubricating oil enters the oil pipes 76 and 16C and collects in the seven oil reservoirs 15d and 15dL.
The bearing of the worm shaft 4 is installed in the mounting hole 1a. Inside la [: Conductivity is established from the outer lid bodies 6 and 7 side. As a result, the lubricating oil is collected between the inner bearing 5 of the mounting hole 1a and the outer cover 6 or 7, and is reliably supplied to the inside of the bearing 5, so that only excess lubricating oil is removed. It passes through the inside of the bearing 5 and is pushed out to the inside of the gear case 1 and falls. In other words, the lubricating efficiency is higher and the reliability is higher than that of the above-mentioned conventional implanted blade type or grooved blade type in which lubricating oil is applied to the bearings 53 from inside the gear case 1. In addition, since a large amount of lubricating oil wax is scattered from the meshing rotation between the worm wheel 2 and the worm 3 in the gear case 1, a small oil pan body 15 is sufficient. In the structure described above, the oil pans are installed from the outside of the gear case 1, making the installation structure simple. +: The installation work for the gear case is also easy, and since there is no protruding or falling part on the inner side of the gear case 1, the gear case can be made smaller. It is possible to eliminate fX accidents that damage parts.Next f: An example of f (11) of this invention will be described from Fig. 6 f2.
The oil receiver in such a form that the large part S+ is fitted into it should be provided with a body 25, and an oil flow path 26° 26 should be formed inside the thick wall of the gear case 1 instead of the pipe shown in (6). With this configuration, 1-Kyokuuke body 25 has a shrunken body 25a, an intrusion lo 25b,
What are the two oil sump parts 25d and 25d in the row f of the weir 25c, and have the same function as above, and the seventh oil sump part 25d, 2
The outer wall of the 5 cl has connection ports 25e, 25e for oil flow gj! of the gear case 1. , 26 , and 26 are in mating communication with one end so that lubricating oil can flow therethrough. The other end of the seventh oil flow path 26.26 directly opens the bearing of the worm shaft 4 of the gear case 1 into the mounting hole 1a, Ia, and connects the bearing 5 in the seventh mounting hole Ja with the probe body 6 or 7. 1: Closed so that the lubricating oil can be conducted through. Therefore, the system shown in FIG. 6 also achieves high oil supply efficiency and high reliability in exactly the same way as described above. Also, by forming the oil flow f'+26.26 in the gear case 1, the manufacturing cost will increase somewhat, but the assembly work will be much easier as only the oil pan (A; 2s) needs to be fitted from the outside. Since there is no protruding or falling part on the inner surface of the gear case 1, there is no chance of damage to the parts on the same side as mentioned above.In addition, in the worm reducer of this invention, the above-mentioned oil The receiver is the lid body lea of body 15.25, 25a or oil vibrator 16
If it is made of a transparent material, it will be possible to see the refueling status directly from the outside, and maintenance and inspection will be easy. It is also possible to install a filter (not shown) inside the oil pan body 15°25, which removes gear wear powder from the lubricating oil and cleans the oil pipe 16 or oil flow path 26. In addition to preventing clogging and rain, this invention also improves the performance of the worm reducer. The oil receiver receives the oil with its body, and the worm shaft bearing of the gear case can be arranged in the mounting hole, so the lubrication efficiency of the worm shaft bearing is greatly improved compared to conventional ones, and the worm shaft bearing can be arranged in the mounting hole. Stable refueling can be ensured. In addition, it is easy to assemble and assemble, and there are no accidents such as damage to the 815 parts, and it is highly reliable for practical use, making it easier to assemble and reduce costs. Figure 4 is a cross-sectional view of a conventional blade-type worm reducer, Figure 2 is a cross-sectional view of a conventional front-type worm reducer, and Figure 3 is a cross-sectional view of a conventional worm reducer. is IV in Figure 2
- An enlarged sectional view along line IV, Fig. 4 is a sectional view showing an actual drawing example of this invention, Fig. 5 is an example of the same UIC (the oil pan in the second is an enlarged sectional view of the body, and Fig. 6 is an enlarged sectional view of the body). It is a sectional view showing another real sister example of U6 Ming. 1... Gear case% 1a... The bearing is in the mounting hole, 2.
... 1st column L wheel, 3 river worms, 4... Worm shaft, 5... Bearing, 6, 7... Lid body, 8...
Fuel filler. 9... Lid body, 10... Lubricating oil, 11 River gutter, 12...
・Protrusions! 3... Groove, 14... Opening, 15, 25
00. Aburake is a body, is a + 25 a-・'? i
Body, 15b, 25b...Entry port, 15a, 25a・
...weir, 15d. 25d...Oil reservoir portion, 15e, 25e...Connection port. )6...Hose, 26...Oil flow path. Applicant's attorney: Takehiko E Takehiko Figure 1 Figure 2 Figure 3 @6 Figure 25e25C25a 2526

Claims (1)

[Claims] A worm wheel and a worm meshing on one side of the worm wheel are pivotally supported in a gear case containing lubricating oil. The worm wheel and the worm are fitted into the lower part and the worm wheel engages with the worm to rotate; the hollow type oil receiver has an inlet for the lubricating oil to be sprayed upward from the top and an oil reservoir inside the body; The oil reservoir part of the body and the bearing of the shaft of the gear case are connected to an oil pipe disposed through the outside of the gear case or an oil flow path formed inside the gear case control room, which communicates with the inside of the guard hole. A worm reducer characterized by being constructed with the following features: