JP3384155B2 - Caliper structure of caliper brake device for vehicle - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle caliper brake device for railway vehicles and the like, and more particularly to a caliper structure which facilitates removal of the caliper brake.

[0002]

2. Description of the Related Art A vehicle caliper brake device of this type will be described with reference to FIGS. 4 and 5 showing a conventional example and FIGS. 1 to 3 showing an embodiment of the present invention.
A caliper 3 is mounted on the brake mounting bracket 2 of FIG. 1, and the caliper 3 is composed of a head portion 4 having an arm portion for sandwiching a wheel (disk) D and a mounting portion 5 to the bracket 2. A pad 7 is attached to the head portion 4 via a bracket 6, and a piston provided in a cylinder 8 presses the pad 7 against the disk D for braking.

In such a vehicle caliper brake device, a mounting structure of the caliper 3 to the bogie frame 1 is disclosed in Japanese Patent Application Laid-Open No. 2-57469.
One of them is as shown in FIG. 4, in which a caliper mounting portion 5 is attached to a brake mounting bracket 2 of a vehicle bogie frame 1 by bolts 10.
And the caliper 3 is attached in a suspended state.

First, as shown in FIG. 5, the caliper mounting surface of the brake mounting bracket 2 of the bogie frame 1 for vehicle has a horizontal upper surface portion 2a and a vertical surface portion 2b which is erected downward from the side edge thereof. On the other hand, the mounting portion 5 of the caliper 3 has a mounting surface 5a in an inverted L shape that covers the mounting surfaces 2a and 2b of the bracket 2. The horizontal upper surface portion 2a of the bracket 2 and the mounting surface 5a of the caliper 3 are fitted by vertical fitting portions 2a ', 5a', and the bolt 10 from the caliper 3 side is screwed into the bracket 2 and tightened. The lower part of the vertical surface portion 2b of the bracket 2 and the caliper mounting surface 5a are fixed by screwing a bolt 10 'from the brake mounting bracket 2 side into the caliper 3 (mounting portion 5).

[0005]

By the way, as described above, the caliper head portion 4 is in a state of sandwiching the disk D, and the front, rear, left and right gaps with the disk D are set to the minimum necessary limits (FIG. 2). 3). Therefore, in order to remove the caliper head portion 4 from the mounted state, it is only possible to move it in the vertical direction.

Therefore, in the structure shown in FIG. 4, when the caliper 3 is to be removed due to a brake abnormality, maintenance or the like, the bolts 10 and 10 'are removed and the caliper 3 is moved downward. At this time, there is no problem if there is a sufficient gap between the vehicle and the upper surface of the brake mounting bracket 2 for inserting the tool (spanner) for operating the bolt 10.
However, normally, the vehicle body is mounted on (mounted on) the bogie frame 1 via the spring device, and the clearance is not sufficiently obtained. For this reason, a spanner cannot be inserted into the gap and the bolt 10 cannot be rotated, and therefore the vehicle body is removed (dropped) from the bogie frame 1 and the caliper 3 is removed. This dismounting of the vehicle body is a large scale and is a problem in terms of workability.

In the structure of FIG. 4, a safety suspender 11 is attached to prevent the caliper 3 from falling when the bolt 10 is damaged, and the number of parts is large. Furthermore, since most of the load applied to the caliper 3 by the bolt 10 is carried, the bolt 10 requires an expensive and highly reliable material.

On the other hand, in the structure shown in FIG. 5, since the mounting surface 5a of the caliper mounting portion 5 is mounted on the horizontal upper surface portion 2a of the mounting bracket 2, the bolt 1
Even if 0 is damaged, the caliper 3 will not drop.

However, since the upper surface of the mounting surface 5a is placed on the horizontal upper surface portion 2a, in order to remove the caliper 3, even if the bolt 10 can be removed, there is no choice but to move the caliper 3 upward. Must remove the car body.

Incidentally, at the time of assembling a new vehicle (new vehicle), since the brake device (the caliper 3 etc.) is incorporated before the vehicle body is mounted (mounted) on the bogie frame 1, there is no problem in tightening the bolt 10.

Under the above circumstances, the present invention provides the brake mounting bracket 2 in the caliper removing operation.
It is an object to move the caliper 3 downward so that the caliper 3 can be removed without operating the bolt 10 on the upper surface.

[0012]

In order to solve the above-mentioned problems, the present invention relates to a caliper structure shown in FIG. 5 described above, in which the mounting portion 5 of the caliper 3 to the bracket 2 is mounted.
However, in the middle of the vertical direction, the above-mentioned vertical fitting portion 5
It is divided into an upper block 15a having a'and 2a ', and a lower block 15b having the caliper head 4 to which the brake pad 7 is attached. This dividing portion is divided into the horizontal mounting plate 16a of the upper block 15a and the lower block 15a. Block 15b
The horizontal mounting plates 16b of the
The bolts 17 in the vertical direction penetrate the a and 16b, and the nuts 18 are screwed into the bolts 17 and fastened and fixed.

To fix the two mounting plates 15a and 15b, the bolt 17 penetrating them is attached to the horizontal mounting plate 1 on the upper block side.
The upper block side horizontal mounting plate 15a may be inserted downward from 5a, and a projection 19 may be formed on the upper block side horizontal mounting plate 15a to abut the head 17a of the bolt 17 to prevent the bolt 17 from rotating.

[0014]

In the caliper structure according to the present invention having the above-described structure, the bolt 10 'under the caliper mounting surface 5a is removed, and the nut 18 is removed from the bolt 17 at the split portion in the middle of the caliper mounting portion 5 to separate the split portion. The parts can be separated. At this time, the lower block 15b does not drop because the bolt 17 of the divided portion is pressed against the upper block 15b by its own weight. Further, when the nut 18 is removed, if the bolt 17 is facing downward and the rotation preventing projection 19 is present, a spanner may be fitted to the lower nut 18 and rotated.

Next, the caliper head portion 4 is received by a jack or the like, the mounting plates 16a and 16b are made parallel to each other, and the bolt 1
7 is released from the upper block 15a (mounting plate 16a), the jack or the like is gradually lowered, and the caliper head portion 4 is moved downward to be removed from the disc D. At this time, since the bracket vertical surface portion 2b is raised downward, the caliper head portion 4 does not need to be moved to the disk D side, and can move downward without trouble.

In order to reattach the caliper head portion 4 after repairs and the like, the above procedure is reversed.

Even if the bolt 10 on the bracket horizontal upper surface portion 2a is damaged, the horizontal upper surface portion 2a is engaged with the upper block 15a of the caliper mounting portion 5 by the vertical fittings 5a 'and 2a'. Therefore, there is no fear that the caliper 3 will fall out.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment is shown in FIGS. 1 to 3, and the same reference numerals as those used above designate the same parts, and the explanation thereof will be omitted. That is, the characteristic part of the present invention is that the caliper mounting portion 5 is shown in FIG.
It is divided into an upper block 15a having a ′ and a lower block 15b having the caliper head portion 4.

The divided portions of the two blocks 15a and 15b are formed by vertically stacking the horizontal mounting plate 16a of the upper block 15a and the horizontal mounting plate 16b of the lower block 15b, and inserting the bolt 17 into the both mounting plates 16a and 16b. Nut 18
It is fixed by screwing in. In this way, if the mounting plate 16b of the upper block 15a overlaps the upper side of the mounting plate 16b of the lower block 15b, the nut 18 can be removed, and the caliper head 4 can be moved downward only from its dividing surface. You can get away.

A projection 19 is provided on the upper surface of the upper block-side horizontal mounting plate 16a for contacting the head 17a of the bolt 17, and the projection 19 can prevent the bolt 17 from co-rotating with the nut 18. Instead of the protrusion 19, a recess into which the head 17a of the bolt 17 is fitted is attached to the mounting plate 1
It may be formed on the upper surface of 6a. The positions of the bolt head 17a and the nut 18 may be turned upside down.

This embodiment has the above-described structure. In assembling a new vehicle, the caliper 3 is mounted in the same manner as in the conventional art, with the split parts fixed by the bolts and nuts 17, 18.

In order to remove the caliper head portion 4 during maintenance or inspection when the brake operation is hindered, the bolt 10 'under the mounting bracket 2 is removed, the nut 18 in the split portion is removed, and the caliper head portion 4 is removed. The jack or crane is received by a jack or suspended by a crane, the jack or crane is lowered, the caliper head portion 4 is moved downward, and the caliper head portion 4 is removed from the disc D. When the inspection and repair are completed, the caliper head portion 4 is attached to the upper block 15a in the reverse order.

[0023]

According to the present invention having the above-described structure, the attachment portion of the caliper to the bogie frame bracket is divided into upper and lower portions, and the caliper head portion is moved downward and detached from the disc by cutting at the divided portion. Since it is possible, it is not necessary to remove (lower) the vehicle body from the bogie frame, and the workability thereof is significantly improved.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment.

FIG. 2 is a plan view of the same embodiment.

FIG. 3 is a bottom view of the embodiment.

FIG. 4 is a front view of a conventional example.

FIG. 5 is a front view of a conventional example.

[Explanation of symbols]

1 vehicle bogie frame 2 Brake mounting bracket 2a Horizontal upper surface of brake mounting bracket 2b Vertical surface of the brake mounting bracket 2a ', 5a' fitting part 3 calipers 4 Caliper head 5 Caliper mounting part 5a Caliper mounting surface 6 Brake pad mounting bracket 7 brake pads 8 cylinders 10, 10 'bolt 15a Upper block 15b lower block 16a Upper block side horizontal mounting plate 16b Horizontal mounting plate for lower block 17 Split bolt 18 nuts 19 Non-rotating protrusion D disk (wheel)

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-2-57469 (JP, A) JP-B-36-21678 (JP, B1) (58) Fields investigated (Int.Cl. ⁷ , DB name) F16D 65/00-65/02 F16D 55/22-55/228 B61H 5/00

Claims (2)

(57) [Claims] 1. A caliper 3 is attached to a brake mounting bracket 2 of a vehicle bogie frame 1, and the bracket 2 is
The mounting surface of the caliper 3 is composed of a horizontal upper surface portion 2a and a vertical surface portion 2b that rises downward from a side edge thereof. The mounting portion 5 of the caliper 3 to the bracket 2 has the mounting surface 5a. The upper surface 2a of the brake mounting bracket 2 and the mounting surface 5a of the caliper 3 are vertically L-shaped to cover the mounting surfaces 2a, 2b of the fitting portion 2 in the vertical direction.
a ', 5a' are fitted, and the bolt 10 from the side of the caliper 3 is screwed and fixed to the bracket 2, and the lower portion of the vertical surface portion 2b of the bracket 2 and the caliper mounting surface 5a are fixed from the side of the bracket 2 Bolt 1
In the caliper structure of a vehicle caliper brake device in which 0'is screwed and fixed to the caliper 3, the mounting portion 5 of the caliper 3 to the bracket 2 is fitted in the vertical direction at the middle of the vertical direction. It is divided into an upper block 15a having joint portions 2a 'and 5a' and a lower block 15b having a caliper head portion 4 to which a brake pad 7 is attached, and the divided portion is a horizontal mounting plate 16a of the upper block 15a. And the horizontal mounting plate 1 for the lower block 15b
6b is vertically stacked, and vertical mounting bolts 17 penetrate both mounting plates 16a and 16b, and nuts 18 are screwed into the bolts 17 and fastened to fix the caliper braking device for a vehicle. Caliper structure. 2. The caliper structure of the vehicle caliper brake device according to claim 1, wherein the both mounting plates 16a, 1a are provided.
A bolt 17 penetrating 6b is inserted downward from the upper surface of the upper block side horizontal mounting plate 16a, and the head 17 of the bolt 17 is attached to the upper block side horizontal mounting plate 16a.
A protrusion 19 is formed which abuts a and prevents the bolt 17 from rotating.