JPH072120Y2 - Brake lining riveting work auxiliary device - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention is applied to the surface of an arc-shaped brake shoe of an internal expansion type brake used in a vehicle, especially for a large vehicle such as a truck or a bus. When riveting a lining, the present invention relates to a work assisting device for making the riveting work extremely easy.

(Prior Art) The above-mentioned riveting of the brake lining is a work required not only at the time of manufacturing and assembling but also at the time of relining the lining. The respective rivet insertion holes that have been previously drilled at the positions are aligned, and the lining is brought to the table T of the riveting hammer device as shown in FIG. From the rivet insertion hole, insert a rivet having a countersunk head only at one end, and with the other end protruding from the rivet insertion hole on the shoe side, fit the rivet insertion hole on the lining side to the lower receiving pin P. To combine. Then, a hammer head H that moves up and down by an air cylinder, etc.
Is lowered to crush the other end of the rivet protruding toward the brake shoe, thereby fixing the lining to the shoe surface. For large trucks, about 20 rivets are struck for each set of brake shoe linings.

(Problems to be solved by the invention) By the way, in the conventional riveting operation as described above, when the operator moves to the next riveting position after finishing the first riveting, the operator does not While the pair of brake shoe linings are once lifted with both hands and rotated along the arc shape of the shoe, the next rivet fastening point is positioned on the lower receiving pin P. In other words, every time positioning is performed at one riveting point, the brake shoe lining, which is a fairly heavy object, has to be lifted with both hands, which imposes a great physical burden on the operator. At the same time, the work efficiency was also poor.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a device for making the riveting operation of the brake lining extremely easy and efficient.

(Means for Solving the Problem) A riveting operation assisting device of the present invention is a pin hole insertion rod 8 inserted into an anchor pin hole 7 provided at one end of an arcuate brake shoe 4 for a vehicle, A support arm 10 integrally extending from the base end side of the rod 8 in a direction intersecting the length direction of the rod 8 is integrally provided with the rod 8, and the rod 8 is inserted into the anchor pin hole 7. A brake shoe holder 1 comprising a stopper 9 which is attached to a required part of one end of the brake shoe 4 so that the brake shoe 4 can be held in a substantially horizontal posture in a state where the brake shoe 4 is inserted and the support arm 10 is supported substantially horizontally, and It is provided with a rope 2 for suspension support which is hung from a suitable height position via a spring balancer 3 and attached to the tip of the support arm 10 of the holder 1.

(Operation of the Invention) The auxiliary device for riveting the brake lining according to the present invention operates as follows.

When relining the lining, the new lining 5 is applied to the surface of the brake shoe 4 from which the old lining has been removed, and these are brought onto the table T of the riveting hammer device A. The pin hole insertion rod 8 of the brake shoe holder 1 suspended from the suspension rope 2 attached to the tip of the support arm 10 is suspended from the brake shoe 4 by the brake shoe 4.
The brake shoe 4 is suspended in a substantially horizontal posture by inserting it into the anchor pin hole 7 of the pivot portion 7 provided at one end of the brake shoe 4 and applying the stopper 9 to a required portion of one end of the brake shoe 4. .

In this case, when the spring force of the spring balancer 3 is set to be slightly smaller than the weight of the brake shoes 4 and the lining 5, the brake shoe 4 side is lowered as it is. The brake shoe 4 can be held at an arbitrary position by lightly supporting it. Further, when the spring force of the spring balancer 3 is set to be equal to or slightly larger than the weight of the brake shoe 4 side, the operator can lightly push down the brake shoe 4 by hand. Can be held in the position.

The brake shoe 4 and the lining 5 are held in a substantially horizontal posture by supporting the tip of the support arm 10 of the brake shoe holder 1.
And a rotational moment that tends to rotate in one direction around one end of the shoe 4 due to the weight of the lining 5 and the opposite of the one end of the shoe 4 due to the tensile force of the spring balancer 3 and the supporting force of the operator's hand. This is because the rotational moments in the directions are balanced.

Then, when riveting is performed, the brake shoe 4 suspended by the suspension rope 2 via the spring balancer 3 is lightly supported with a hand, or is slightly depressed to be held in a predetermined position. A rivet 16 having, for example, a countersunk head 16a at one end is inserted through the rivet insertion hole 15 on the side of the lining 5 to be riveted, and the other end side shaft portion of the rivet 16 is inserted into the rivet insertion hole 17 on the brake shoe 4 side. The lower part of the rivet insertion hole 15 on the side of the lining 5 in which the rivet 16 is inserted to the lower receiving pin P on the table T while the brake shoe 4 supported by the hand is appropriately rotated in the circumferential direction. The rivet 16 is fitted and then the hammer head H is lowered to crush, that is, rivet-tighten, the shank of the rivet 16.

When one riveting is completed in this way, the rivet insertion hole 15 on the side of the lining 5 is disengaged from the lower receiving pin P, and the brake shoe 4 is lightly supported by a hand and appropriately rotated in the circumferential direction. The rivet 16 is inserted from the rivet insertion hole 15 corresponding to the rivet tightening point, and the lower part of the rivet insertion hole is fitted to the lower receiving pin P, and rivet tightening is performed in the same manner as described above.

When the riveting operation of the combined set of the brake shoe 4 and the lining 5 is completed as described above, the pin inserting rod 8 is pulled out from the anchor pin hole 7 of the brake shoe 4 and the brake shoe 4 is removed. The 4 / lining 5 combination is carried out from the table T to another place, a new set of brake shoes 4 and the lining 5 is carried in on the table T, and the same operation is performed.

(Embodiment) An embodiment will be described with reference to the drawings. FIG. 1 is a schematic view of an entire riveting operation assisting device according to the present invention, in which 1 is a brake shoe holder and 2 Is a rope for suspending the suspension of the brake shoe holder 1 that is suspended from a suitable height position above the riveting hammer device A through the spring balancer 3. Reference numeral 4 denotes an arc-shaped brake shoe of an internally expandable brake used for a large truck, and a lining 5 is attached to the surface thereof.

As is apparent from FIGS. 2, 3, and 4, the brake shoe holder 1 is fixed to the base plate 6 by welding or the like so as to vertically project from one side surface of the base plate 6, and the brake shoe holder 1 is attached to the brake shoe holder 1. 4, a pin hole inserting rod 8 which is removably inserted into an anchor pin hole 7 of a hollow shaft portion 18 formed at one end of the rod 4 and an upper end portion of the base plate 6 so as to intersect the longitudinal direction of the rod 8. A support arm 10 having a required length integrally extending in any direction, and fixed to the base plate 6 by welding or the like so as to extend from the lower part of one end of the base plate 6 in parallel with the rod 8. The rod 8 to the anchor pin 7 of the brake shoe 4.
The rod-shaped stopper 9 which is abutted against a required portion of the outer surface of the pivot portion 18 so as to hold the brake shoe 4 in a substantially horizontal posture in a state where the support arm 10 is inserted into the support arm 10 and the support arm 10 and the support arm 10 Tip (free end)
And a mounting ring (11) fixed by welding.

An upper end portion of the suspension rope 2 is attached to the ceiling beam portion D, a mounting frame, or the like, and a spring balancer 3 is interposed in a required intermediate portion of the rope 2. This spring balancer 3
As shown schematically in FIG. 1, a plurality of coil springs 13 are interposed between an upper mounting plate 12a and a lower mounting plate 12b. These upper and lower mounting plates 12a, 12b Is attached to the suspension rope 2. This spring balancer 3
Is used by appropriately replacing it with one having a desired spring force according to the weight of the brake shoe 4. For example, when the weight of the brake shoe 4 to be suspended is large, a spring balancer 3 having a strong spring force is used, and when the brake shoe 4 is relatively light, a spring balancer 3 having a relatively weak spring force is used. do it.

Further, when using this spring balancer 3, either one having a spring force slightly smaller than the total weight of the brake shoe 4 and the lining to be suspended, or one having a spring force equal to or slightly larger than the total weight is used. To do.
In the former case, it is sufficient to hold the brake shoe 4 side lightly with a hand during the rivet tightening work, and in the latter case, hold the brake shoe 4 side lightly and hold it in place. Hold it in place.

An openable and closable hook 14 is fixed to the lower end of the suspension rope 2, and the hook 14 is attached to the tip of the support arm 10 of the brake shoe holder 1 for attachment 11.
It is possible to engage in. Although a plurality of coil springs 13 are used in the spring balancer 3 shown in FIG. 1, the number of the coil springs 13 may be one.

The stopper 9 of the brake shoe holder 1 holds the brake shoe 4 in a substantially horizontal posture in a state where the pin hole inserting rod 8 is inserted into the anchor pin 7 of the brake shoe 4 and the support arm 10 is supported substantially horizontally. As described above, the outer surface of the pivot portion 18 is applied to a required portion,
The attached state of the stopper 9 and the attached state to the outer peripheral surface of the cylindrical shaft portion 18 will be described below with reference to FIG.

As shown in FIG. 3, the upper half of the hollow shaft portion 18 forming the anchor pin hole 7 has a uniform thickness and has a predetermined radius R (a central axis O of the anchor pin hole 7). To the outer peripheral surface), but the lower side of the hollow shaft portion 18 is formed so as to be gradually thicker than the radius R,
Part of the thick portion is indicated by 18a. Also, stopper 9
Is fixed to one end face of the base plate 6 at a position below the pin hole insertion rod 8 and at a position where the distance from the central axis O of the anchor pin hole 7 is slightly longer than the radius R. .

Therefore, when the pin hole insertion rod 8 is inserted into the anchor pin hole 7, it can be easily inserted by inserting it into the anchor pin hole 7 with the stopper 9 positioned above the position shown in FIG. After this insertion, if the brake shoe holder 1 is rotated so that the stopper 9 moves downward, the stopper 9 rotates downward along the outer peripheral surface of the hollow shaft portion 18, but the hollow shaft portion 18 On the lower side, the distance R ′ from the central axis O of the anchor pin hole 7 to the outer peripheral surface thereof is R ′.
Becomes gradually longer than the radius R, and as shown in FIG. 3, the hollow shaft portion 18 is in contact with the outer peripheral surface of the hollow shaft portion 18 and is locked. Then, in such a state, the support arm 10
If the brake shoe 4 is supported substantially horizontally, the brake shoe 4 pivotally supported by the pin hole insertion rod 8 is prevented from rotating downward by the stopper 9, and is held in a substantially horizontal posture.

As shown in FIGS. 3 and 4, the support arm 10 extends from one end side of the brake shoe 4 to a length of about half of its entire length, and as shown in FIG. Bent to the center of the brake shoe 4 in the width direction near the exit point 6 (the bent portion is indicated by 10a), and the rib 4a of the shoe 4 is bent.
Extends straight along.

Next, a usage mode of the riveting operation assisting device having the above-described configuration will be described. Here, the spring balancer 3 has a spring force slightly smaller than the total weight of the brake shoe 4 and the lining 5.

For example, when the lining 5 is worn out and needs to be replaced, the new lining 5 is applied to the surface of the brake shoe 4 from which the old lining 5 has been removed, and this is riveted as shown in FIG. Bring it on the table T of the hammer device A, and brake shoes 4
Into the anchor pin hole 7, the pin hole insertion rod 8 of the brake shoe holder 1 suspended by the rope 2 is inserted.

In this state, the weight of the brake shoes 4 and the lining 5 is slightly larger than the spring force of the spring balancer 3, so that the operator must hold the support arm 10 of the brake shoe holder 1 or the brake shoes 4 by hand. , The brake shoes 4 and the lining 5 will sink naturally, but if the support arm 10 or the brake shoes 4 are lightly supported, the brake shoes 4 and the lining 5
Can be held at a desired height position. If the tip of the support arm 10 is supported by hand, the brake shoe 4
The lining 5 is held in a horizontal posture by a stopper 9 attached to one end of the shoe 4. In this case, the brake shoe 4 and the lining 5 rotate due to their own weights in one direction about one end of the shoe 4, and the tension of the spring balancer 3 and the supporting force of the operator's hand support the shoe 4. It is in a state of being balanced with the rotational moment in the opposite direction from the one end.

When carrying out rivet tightening, the rivet 16 having a countersunk head 16a formed at one end from the rivet insertion hole 15 on the side of the lining 5 to be riveted with the supporting arm 10 or the brake shoe 4 lightly supported by hand. Is inserted, the other end side shaft portion 16b is projected upward from the rivet insertion hole 17 on the brake shoe 4 side, and the brake shoe 4 is appropriately rotated in the circumferential direction, while the lining 5 side on which the rivet 16 is inserted is inserted. The lower part of the rivet insertion hole 15 is fitted to the lower receiving pin P on the table T, and the state shown in FIG. 3 is obtained.

Then, the hammer head H is lowered to crush the tip of the shaft portion 16b of the rivet 16 protruding upward. When the rivet tightening at one place is completed in this way, the brake shoe 4 is lightly lifted by hand to disengage the rivet insertion hole 15 from the lower receiving pin P, and then the brake shoe 4 is, for example, referring to FIG. After turning a little clockwise, insert the rivet 16 from the rivet insertion hole 15 on the lining 5 side that hits the next rivet tightening point, then fit the lower part of the rivet insertion hole 15 to the lower receiving pin P, and the same as above. Perform riveting with the operation.

The rivet insertion holes 15 and 17 are located on both sides of the center line of the brake shoe 4 and the lining 5 (for example, the line where the rib 4a of the brake shoe 4 is formed), as is apparent from FIGS. 2 to 4. Since a plurality of them are arranged in each row, first, the rivet tightening work for one side row is sequentially performed from one end side of the row to the other side, and then the brake shoes 4
May be held by hand and inverted, and the riveting operation for the opposite row may be sequentially performed from one end side in the same manner.

When the riveting operation of the combined set of the brake shoe 4 and the lining 5 is completed as described above, the pin inserting rod 8 is pulled out from the anchor pin hole 7 of the brake shoe 4, and the brake shoe 4 Lining 5
The combined body is carried out from the table T to another place, and the new brake shoes 4 and the lining 5 are carried in on the table T,
Try to do similar work.

In the riveting operation of the above-described embodiment, the suspension rope 2 for suspending and supporting the brake shoe holder 1 comes down to the vicinity of the hammer head H of the riveting hammer device A. Therefore, as far as FIG. 1 and FIG. 3 are concerned. Then, it seems that the rope 2 for suspending support and the hammer head H interfere with each other. However, as shown in FIG. 4, the support arm 10 fixed to the base plate 6 is located near the base plate 6 as shown in FIG. By bending the brake shoe 4 toward the center of the brake shoe 4 and extending it substantially along the center of the shoe 4, the rope 2 for suspending support can be inserted into the rivet of the brake shoe 4 during work. Since a sufficient distance can be maintained with respect to the hole 17, the suspension rope 2 and the hammer head H do not interfere with each other as described above and work is hindered. In addition, the rope 2 for suspension support
However, even if the rope 2 comes into contact with the frame portion of the re-getting hammer device A, since the rope 2 has flexibility and can be moved up and down by the spring balancer 3, there is no inconvenience in operation.

In the embodiment described above, the spring balancer 3 is used by appropriately replacing it with one having a desired spring force according to the weight of the brake shoe 4, but according to the weight of the brake shoe 4, the spring force is changed. If you use a spring balancer with a structure that can be adjusted to the desired one with a simple operation, when riveting various brake shoes with different weights,
A desired spring force according to the weight of the brake shoe 4 can be easily set only by switching the spring force without replacing the spring balancer one by one.

(Effect of the Invention) According to the rivet tightening work assisting device of the present invention, when positioning the rivet tightening points between the brake shoe and the lining, the operator is required to determine the total weight of the brake shoe and the lining. It is not necessary to bear the load and it is sufficient to lightly support the shoes and the lining with a slight force by the action of the spring balancer, which makes the work very easy. Moreover, since the brake shoe and the lining are held in a substantially horizontal posture by the brake shoe holder whose tip is supported by the suspension rope,
To move to the next riveting location after finishing riveting at a location, it is not necessary to significantly change the horizontal attitude as described above, and it is possible to slightly rotate in the circumferential direction with respect to the horizontal attitude, Alternatively, the work can be performed efficiently because it can be pushed back and forth.

Further, in order to suspend the brake shoe, the brake shoe is not suspended at a plurality of points, but only one anchor pin hole of the shoe is suspended by a single rope for suspension via the retainer. , The suspension rope does not hinder the riveting hammer device, and the brake shoe, which is held in a substantially horizontal position, can be rotated along the vertical plane or flipped along the horizontal plane. Is very easy to perform, and the brake shoe can be hung near the hammer head, so that the riveting operation can be performed easily.

As described above, the riveting operation assisting device of the present invention is more effective for a heavy brake lining used for a large vehicle.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic perspective view showing the entire riveting operation assisting device according to the present invention, and FIG. 2 is an enlarged perspective view of an essential part of the same device when it is in use. FIG. 4 is an enlarged side view of an essential part of the above apparatus when in use, and FIG. 4 is a plan view of an essential part of the above apparatus when in use. 1 ... Brake shoe holder, 2 ... Suspension support rope, 3
...... Spring balancer, 4 ... Brake shoe, 5 ... Lining, 7 ... Brake shoe anchor pin hole, 8
...... Pin hole insertion rod, 9 ... Stopper, 10 ... Support arm.

Claims (1)

[Scope of utility model registration request] 1. A pin hole inserting rod (8) to be inserted into an anchor pin hole (7) provided at one end of an arcuate brake shoe (4) for a vehicle, and a base end side of the rod (8). To the support arm (10) integrally extending in a direction intersecting the length direction of the rod and the rod (8), and the rod (8) is attached to the anchor pin hole (7). ) And the support arm (10) is supported substantially horizontally, so that the brake shoe (4) can be held in a substantially horizontal position, and a stopper (9) is applied to a required part of one end of the shoe (4). And a brake shoe holder (1) consisting of and a rope for hanging (which is hung from a suitable height position via a spring balancer (3) and attached to the tip of the support arm (10) of the holder (1). 2) Brake lining provided with Of riveting work assist device.