JPH042907B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a drive device with a speed detector for a vehicle, which is equipped with a speed detector that detects the rotation of a pinion at the shaft end of a main motor of a railway vehicle.

[Technical background of the invention and its problems] Generally, as shown in FIGS. 3 and 4, a drive device for a railway vehicle consists of a main electric motor 1, a pinion 2 fitted on the end of its shaft 1a, and an axle 3. It consists of a gear 4 that fits and meshes with the pinion 2, and the rotational energy of the main motor 1 is transmitted from the pinion 2 to the axle shaft 3 via the gear 4.

Here, the pinion 2 and gear 4 are connected to the main motor 1.
The gear box 5 is hermetically covered with a separable gear box 5 attached to the shaft end side, and lubrication is achieved by a lubricant such as a high-viscosity gear compound sealed within the gear box 5.

On the other hand, in the above-mentioned vehicle drive system, a speed detector is provided on the axle 3 to detect the rotation of the axle 3 in a speed detection method that outputs a speed signal for displaying the speed meter in the driver's cab, detecting wheel slippage, etc. There are several methods, but in the case of a hanging type main motor 1 as shown,
A speed detector 6 that non-contact detects the rotation speed of the pinion 2 at the end of the shaft 1a is generally employed. This speed detector 6 uses a pulse detection sensor or a speed generator depending on the type of signal to be output, and is mounted by supporting it using an L-shaped pedestal 7. 6
a is from the detector mounting hole 5a on the gear box 5 to the gear box 5
It protrudes to the vicinity of the inner pinion 2. The gap X between the tip of the detection body 6a and the pinion 2 is selected depending on the type of detector and responsiveness, but it is generally regulated to a size within the range of about 3 to 6 mm, and the tolerance is ± There are restrictions such as 10% or less.

L-shaped pedestal 7 that supports such a speed detector 6
The vertical plate portion 7a is fixed to a mirror lid 8, which is a stator of the main motor 1, which is considered to have the same displacement as the pinion 2, by tightening bolts 9. Also gear box 5
The horizontal plate portion 7 of the L-shaped pedestal 7 is designed to prevent rainwater from entering through the detector mounting hole 5a and to prevent the gear compound inside the gear box 5 from leaking to the outside.
b. An elastic body 10 such as rubber packing is adhered to the lower surface of the detector body 6a to surround the detection unit main body 6a.
Then, the elastic body 10 is brought into close contact with the periphery of the detector mounting hole 5a of the gear box 5 to form a seal.
With the letter-shaped pedestal 7 pressed onto the gear box 5, the bolt 9 is tightened and fixed to the mirror cover 8.

By the way, in the above-mentioned drive device with a speed detector for a vehicle, there is a problem in the mounting structure of the speed detector 6, and it is difficult to position the L-shaped pedestal 7 when tightening and fixing it to the mirror cover 8 with the bolts 9. , the main body 6 of the detection section of the speed detector 6 supported on the pedestal 7
It is difficult to obtain the dimension of the gap X between the tip of a and the pinion 2 as specified, and the speed detector 6
There were drawbacks that impeded detection performance.

Therefore, in recent years, as shown in FIG. 5, a downward step 7a' is formed on the vertical plate 7a of the L-shaped pedestal 7, and an upward step 8a is formed on the outer surface of the mirror cover 8. The pedestal 7 is pushed down toward the gear box 5 side until the stepped portions 7a' and 8a come into contact with each other to position it, and in this state, the bolt 9 is tightened and fixed. The dimension of the gap X between the tip of the main body 6a and the pinion 2 is determined.

However, in the conventional configuration shown in FIG. 5, as described above, the step 7a' of the L-shaped pedestal 7 is formed downward, and the step 8a of the mirror cover 8 is formed upward, so that the mount 7 is Since the bolts had to be tightened while pushing down toward the gear box 5 side against the reaction force of the elastic body 10 such as a rubber packing, the installation work was troublesome and depending on the method of the work, it could be difficult to tighten the bolts. The bolts may be tightened with the parts touching unevenly, or
Furthermore, after installation, the pedestal 7 is pushed up by the gap between the bolt 9 and the bolt insertion hole of the L-shaped pedestal 7 due to the compression reaction force of the elastic body 10 such as a rubber packing, and as a result, the above-mentioned gap X is maintained accurately. There was a problem that caused an inconvenience that made it impossible to do so. Further, if the elastic body 10 such as the rubber packing has a strong compression reaction force, it will cause the above-mentioned problems, so there is a problem that a large compression margin cannot be obtained and a high sealing effect cannot be expected.

[Purpose of the invention]

This invention was made in view of the above circumstances, and it has good workability when installing the speed detector, and it can be easily and reliably installed.
A very simple and high-performance speed detector mounting drive for vehicles that can position and fix the letter-shaped pedestal, accurately create the gap between the tip of the detector body and the pinion as specified, and always maintain the gap size. The purpose is to provide a device.

[Summary of the invention]

The vehicle speed detector-equipped drive device of the present invention includes:
In order to achieve the above purpose, by forming a positioning step on the mirror lid that engages with the L-shaped stand in a direction that resists the compression reaction force of an elastic body such as a rubber gasket applied to the L-shaped stand, once the L-shaped Once the frame is engaged and positioned, the frame can be securely positioned and fixed by simply tightening the bolts without pressing the frame against the gear box side, and the frame can be securely positioned and fixed to the tip of the main body of the speed detector's detection part. This allows the gap with the pinion to be precisely obtained and maintained as specified.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIG. Components in the figure having the same configuration as those in FIGS. 3 to 5 are given the same reference numerals to simplify the explanation. Here, a downward positioning step 8b is formed on the outer surface of the mirror cover 8 of the main motor 1, with which the upper end shoulder of the vertical plate 7a of the L-shaped pedestal 7 abuts and engages. In other words, the positioning step 8b is L
The mirror cover 8 is oriented in a direction that resists the compression reaction force of an elastic body 10 such as a rubber gasket applied to the figure-shaped pedestal 7 as shown by the arrow in the figure.
If the upper end of the vertical plate part 7a of the L-shaped pedestal 7 is tightly engaged with the stepped part, the tip of the detecting part main body 6a of the speed detector 6 supported by the horizontal plate part 7b of the pedestal 7 will be connected to the pinion. 2 and the gap X are configured to have a dimensional relationship that can be made as specified in advance.

In the vehicle speed detector-equipped drive device having the above configuration, the L on which the speed detector 6 is mounted and supported is
When fixing the letter-shaped pedestal 7, while pressing down the pedestal 7 so that the elastic body 10 such as a rubber seal adhered to the lower surface of the horizontal plate portion 7b is brought into close contact with the upper surface of the gear box 5, the upper end of the vertical plate portion 7a is attached to the mirror cover. 8 is engaged with the downward positioning step 8b. After that, the vertical plate portion 7a is fixedly fixed to the mirror cover 8 by tightening the bolts 9. In such a case, once the upper end of the vertical plate portion 7a of the L-shaped pedestal 7 is engaged with the stepped portion 8b of the mirror cover 8,
Thereafter, the compressive reaction force of the elastic body 10 pushes it upward as shown by the arrow in the figure, but this force is received by the downward step 8b, so when tightening the bolt 9, the pedestal 7 is pushed down. There is no need,
This makes the bolt tightening work that much easier. Also, due to the compression reaction force of the elastic body 10, the vertical plate portion 7 of the pedestal 7
The upper end a and the positioning step 8b of the mirror lid 8 are securely engaged, and the pedestal 7 can be accurately positioned and fixed, and the position of the pedestal 7 will not shift after that. The gap X between the tip of the detection body 6a of the speed detector 6 and the pinion 2 can be maintained accurately as specified, and the detection performance of the rotation speed of the pinion 2 by the speed detector 6 can be improved. You will be able to figure it out.

In FIG. 1, a cylindrical protection member 11 is fixed by welding or the like so as to protrude inward from the peripheral edge of the detector mounting hole 5a of the gear box 5. This surrounds the detecting section main body 6a of the speed detector 6 that extends inside the gear box 5 to protect it from collision with lubricant such as gear compound.

In other words, the viscosity of the gear compound normally sealed in the gear box 5 increases, especially in winter, and the compound solidifies and sticks to the detection unit body 6a and pinion 2, and when the main motor 1 is started, the pinion 2
As the gear rotates, the solidified gear compound is forcibly separated from the main body 6a of the detecting section, or conversely, it collides with the main body 6a of the detecting section, applying excessive force to the main body 6a of the detecting section, causing damage and other adverse effects. On the other hand, when the main motor heats up after startup or in the summer, the viscosity of the gear compound decreases, and the rotation of the pinion 2 causes the detection unit main body 6a to
It is pushed up along the circumferential surface and adheres to the elastic body 10 such as a rubber gasket above the detector mounting hole 5a, causing the rubber to age faster and impairing its sealing properties, or causing the gear compound to have asphalt-like stickiness. There is a problem in that when the gear compound adheres to the rubber seal, difficult cleaning work is required to remove the adhered gear compound when disassembling and reassembling the gear compound for maintenance and inspection.

These problems can be solved by providing the protection member 11 described above. That is, since the outer periphery of the detecting section main body 6a protruding into the gear box 5 is surrounded by the cylindrical protective member 11, the solidified gear compound in winter does not directly collide with the detecting section main body 6a due to the protective member 11. In addition, although the gear compound with low viscosity rises along the outer periphery of the protective member 11 during the summer, it does not enter the inside of the protective member 11 and does not reach the vicinity of the detector mounting hole 5a, which eliminates troublesome cleaning etc. It can be simplified.

FIG. 2 shows another embodiment in which the protection member 11 is modified, and the protection member 11 has a cylindrical shape, but here two protection members 12 made of a simple plate are used for the main body of the detection section. 6a, which are disposed at forward and backward positions in the rotational direction of the pinion 2, and in this case as well, substantially the same effects as in the above embodiment can be obtained.

〔Effect of the invention〕

Since this invention is made as described above, the workability when installing the speed detector is good, the L-shaped mount can be easily and securely positioned, and the gap between the tip of the main body of the detection part and the pinion can be precisely set as specified. The present invention provides a very simple and high-performance drive device with a speed detector for a vehicle that can be moved out of the vehicle and always maintain the gap size.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view of the main structure of an embodiment of the present invention, Fig. 2 is a partial cross-sectional view of another embodiment of the invention, and Fig. 3 is a partially cross-sectional overall structure of a conventional example. 4 are sectional views taken along line A--A in FIG. 3, and FIG. 5 is a partial sectional view showing another conventional example. 1... Main motor, 1a... Shaft, 2... Pinion, 3... Axle, 4... Gear, 5... Gear box, 5
a...Detector mounting hole, 6...Speed detector, 6a...
...Detection unit main body, 7...L-shaped pedestal, 7a...Vertical plate part, 7b...Horizontal plate part, 8...Mirror cover, 8b...
Positioning step portion, 9... Bolt, 10... Elastic body such as rubber packing, 11, 12... Protective member.

Claims (1)

[Scope of Claims] 1. A gear box that covers a pinion provided at the shaft end of a vehicle traction motor and a gear that meshes with the pinion and transmits power to the axle is attached to the shaft end of the traction motor; Mount the L-shaped pedestal by tightening bolts to the mirror cover of the main motor with an elastic body such as a rubber gasket interposed over the speed detector mounting hole of the gear box, and attach the speed detector to the horizontal plate portion of the pedestal. A drive device with a speed detector for a vehicle, in which the detection body is installed in a state that protrudes from the detector mounting hole near the pinion in the gear box, and the speed detector detects the number of revolutions of the pinion without contact. A drive device with a speed detector for a vehicle, characterized in that a positioning step portion is formed on the mirror lid to engage with the mount in a direction that resists the compression reaction force of the elastic body applied to the mount. 2. The gear box has a protection member that protects the circumferential side of the detection unit body of the speed detector that protrudes inward from the speed detector mounting hole from collision with a lubricant such as a gear compound sealed in the gear box. A drive device with a speed detector for a vehicle as claimed in claim 1.