JP3013100U - Brake shoe stripper - Google Patents

Abstract

(57) [Summary] [Purpose] A rivet that fixes the brake shoe and brake liner can be easily set and removed securely, and rivet tightening can also be performed. [Structure] A ram unit 2 that moves up and down, a work table 6 located below the ram unit 2, a stripper punch device 11 attached to the ram unit 2, and a punch receiving device 3 placed and set on the work table 6. In the stripper punch device, a guide pin is formed from the tip or the stripper punch itself can be retracted, and the punch receiving device 3 includes a die 7.
It is composed of two substantially circular brake shoe holding plates 3a vertically arranged at a position facing each other with the die 7 sandwiched between them, and the brake shoe holding plates 3a sandwich the brake shoe BS when they come close to each other, In the sandwiched state, it is formed so as to rotate about the axis and be movable in the axial direction.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention is mainly used to set the rivet that fixes the brake shoe and the brake liner very easily and securely when the brake liner of the tire of a large vehicle such as a truck or a bus or a medium-sized vehicle is worn out and replaced. The present invention relates to a brake shoe stripper that can be removed and can also be rivet tightened by changing the tool.

[0002]

[Prior art]

 Conventional large-sized vehicle tires have a pair of roughly half-moon shaped metal brake shoes symmetrically and vertically symmetrically arranged, and a brake liner made of asbestos or the like is fixed to the outer peripheral surface by rivets. When the brake liner was worn out and replaced, the brake liner was forcibly inserted between the brake shoe and the brake liner to cut each rivet, and the brake liner was scraped off from the outer surface of the brake shoe. After that, each rivet on the brake shoe side was punched out with a hammer.

[0003]

[Problems to be solved by the device]

 However, when scraping off the brake liner from the outer surface of the brake shoe while cutting each rivet, it is necessary to forcibly insert a shaving blade between the brake shoe and the brake liner, and Due to the fact that the brake liner had to be cut and that each rivet on the brake shoe side had to be punched out with a hammer or the like, replacement of the brake liner was extremely difficult and impossible.

Further, in such work, there is a problem that the outer surface of the brake shoe is damaged.

In view of the above-mentioned problems and the like, the present invention makes it extremely easy to set the rivet that fixes the brake shoe and the brake liner very easily when the tire brake liner is worn out and replaced. It was devised as an issue to provide a brake shoe stripper that can be removed and the rivet can be tightened by changing the tool.

[0006]

[Means for Solving the Problems]

 This invention is directed to a ram portion that is moved up and down by hydraulic or pneumatic driving means, a workbench located below the ram portion, a stripper punch device attached to the ram portion, and a position corresponding to the stripper punch device of the workbench. The stripper punch device is configured to be mounted and set in the stripper punch device.The stripper punch device forms a guide pin from the tip of the stripper punch or the stripper punch itself by means of an operating device attached to the ram, so that the punch receiver device can be retracted. Consists of a die with a through hole large enough to allow the middle tubular part of the rivet to pass through, and two substantially circular brake shoe holding plates placed vertically in a position facing each other across the die. This brake shoe holding plate is formed so as to be able to sandwich and support the brake shoe when it comes close to the brake shoe holding plate, and in the sandwiched and supported state, the brake shoe holding plate is More it has movably formed rotation and in the axial direction around the solves the problems described above.

Further, since a crimping punch can be attached to the tip of the stripper punch device, the problem that the rivet crimping can be performed by changing the tool is solved.

[0008]

[Action]

 The brake shoe stripper according to the present invention comprises a ram portion that is moved up and down by a driving means such as hydraulic pressure or pneumatic pressure, a workbench located below the ram portion, a stripper punch device attached to the ram portion, and a stripper punch on the workbench. It consists of a punch receiver placed and set at a position corresponding to the device.The stripper punch device is formed so that the guide pin or the stripper punch itself can be retracted from the tip of the stripper punch by the actuator attached to the ram. However, the punch receiving device consists of a die with a through hole large enough for the intermediate tube part of the rivet to pass through, and two substantially circular dies arranged vertically at a position facing each other with this die in between. It is composed of a brake shoe holding plate, and this brake shoe holding plate is formed so that the brake shoes can be sandwiched and supported by coming close to each other. In addition, since it is formed so that it can rotate about its axis and move in the direction of its axis in the state of being clamped and supported, when the rivet is removed, the brake shoe is first clamped by the brake shoe holding plate of the punch receiver. Hold and remove rivet with die and stripper punch of stripper punch device.

The positioning at that time can be freely performed by forming the brake shoe holding plate so as to rotate about the axis and move in the axial direction with the brake shoe holding plate sandwiched and supported. Further, when the rivet has a hole, the guide pin can be projected from the tip of the stripper punch when necessary, so that the rivet can be reliably removed.

Further, since the crimping punch can be attached to the tip of the stripper punch device, the rivet can be crimped by changing the tool.

[0011]

【Example】

 Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

That is, reference numeral 1 shown in the drawing is an apparatus main body, and includes a ram portion 2 which is moved up and down by a driving means such as hydraulic pressure or pneumatic pressure, a workbench 6 located below the ram portion 2, and a ram portion 2. The stripper punch device 11 is attached, and the punch receiving device 3 is placed and set at a position corresponding to the stripper punch device 11 of the workbench 6.

Then, the stripper punch device 11 uses a guide pin 13 from the tip of the stripper punch 12 or a stripper punch (the guide pin 13 shown in the figure is used as a stripper punch by an actuator (not shown) attached to the ram portion 2). Yes) to make itself appearable.

As shown in FIG. 2, the specific structure thereof is such that an operating rod 15 is arranged in a punch case 14 and a guide pin 13 at its tip is projected and retracted, and is fixed to the ram portion 2. The actuating rod holding cylinder 19 is lowered by the holding body 18, and the actuating rod 15 is also lowered by the lowering. However, when the actuating rod holding cylinder 19 is lowered, the impact absorbing spring 17 is first contracted and the actuating rod holding cylinder 19 is impacted. When the absorbing spring 17 comes into contact with the storage body, the storage body descends and the spring 16 is contracted so that the actuating rod 15 pushes the guide pin 13 to project it. When the operation is released, the springs of the two springs 16 and 17 are released. The guide pin 13 is formed so as to be immersed by the repellency. Reference numeral 20 is a contact collar body, and 21 is a stopper body of the stripper punch 12.

On the other hand, the punch receiving device 3 is vertically arranged at a position facing the die 7 in which a through hole having a size large enough for the intermediate tubular portion of the rivet to pass through is punched and the die 7 is sandwiched. It is composed of two substantially circular brake shoe holding plates 3a. This brake shoe holding plate 3a is formed so as to be able to sandwich and support the brake shoe BS when it comes close to the brake shoe BS, and the brake shoe BS is held in the sandwiched support state. It is designed to be rotatable by a handle H, and is formed so as to be movable in its axial direction.

The brake shoe holding plate 3a is rotatably supported by a shaft that extends laterally to the rear of the apparatus body 1 so that the entire body can be moved up and down slightly. Is suspended by a spring (not shown) behind the brake shoe holding plate 3a when the stripper punch 12 comes into contact with the brake shoe BS, and the brake shoe holding plate 3a is lowered and placed on the workbench 6. The rivet is pulled out by stopping by contacting the fixed abutment table 4.

Further, between the brake shoe holding plates 3a, a gate type die stand 3b on which a die 7 is placed is mounted and fixed. A lower end portion 5 of the brake shoe holding plate 3a is fixed to a work table 6 and is formed so that it can be removed when it is not necessary.

On the other hand, a caulking punch can be attached to the tip of the stripper punch device 3 so that the rivet caulking can be performed.

Further, the operation of the ram portion 2 is formed so as to be switchable so that it is stopped once and then further lowered by an instruction again, or simply lowered to the rivet tightening state. The operation is performed by the two foot pedals FP.

[0020]

[Effect of device]

 According to the present invention thus formed, the ram portion 2 which is moved up and down by a driving means such as hydraulic pressure or pneumatic pressure, the work table 6 located below the ram portion 2, and the stripper punch device 11 attached to the ram portion 2 are provided. And the punch receiving device 3 placed and set at a position corresponding to the stripper punch device 11 of the workbench 6. The stripper punch device 11 is operated by an operating device attached to the ram portion 2 so that the stripper punch 12 can be moved to the tip end of the stripper punch 12. Guide pin 13 or the stripper punch 12 itself is formed so as to be retractable, and the punch receiving device 3 has a die 7 in which a through hole having a size large enough for the intermediate tubular portion of the rivet to pass through is formed, and this die 7 It is composed of two substantially circular brake shoe holding plates 3a vertically arranged in a position facing each other with the brake shoe holding plate 3a close to each other. Since the brake shoe BS is formed so as to be able to be sandwiched and supported by, and is formed so as to rotate around the axis and be movable in the axial direction in the sandwiched and supported state, when removing the rivet, first, The shoe BS can be clamped and held by the brake shoe holding plate 3a of the punch receiving device 3, and the rivet can be removed by the die 7 and the stripper punch 12 of the stripper punch device 11.

At the time of alignment, the brake shoe holding plate 3a is formed so as to rotate about the axis and move in the axial direction with the brake shoe holding plate 3a being sandwiched and supported. It can be done. When the rivet has a hole, the guide pin is projected from the tip of the stripper punch when necessary, so that the rivet can be removed accurately.

Further, since the crimping punch can be attached to the tip of the stripper punch device, the rivet can be crimped by changing the tool.

Therefore, according to this invention, when the brake liner of the tire is worn out and is replaced, the rivet that fixes the brake shoe and the brake liner can be set very easily and reliably removed. In addition, the rivet can be tightened by changing the tool, which has practical and practical useful effects.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention.

FIG. 2 is a sectional view of the stripper punch device of the present invention.

FIG. 3 is a schematic side view of a punch receiving device portion of the present invention.

[Explanation of symbols]

1 Device Main Body 2 Ram Part 3 Punch Receiving Device 3a Brake Shoe Retaining Plate 3b Die Stand 4 Retaining Plate Receiving Base 5 Lower End 6 Worktable 7 Die 11 Stripper Punching Device 12 Stripper Punch 13 Guide Pin 14 Punch Case 15 Actuating Rod 16 Spring 17 Shock absorbing spring 18 Holding body 19 Actuating rod holding cylinder BS Brake shoe H Handle FP Foot pedal

Claims (2)

[Scope of utility model registration request] 1. Corresponding to a ram portion that is moved up and down by hydraulic or pneumatic driving means, a workbench located below the ram portion, a stripper punch device attached to the ram portion, and a stripper punch device for the workbench. The stripper punch device is placed and set at a position, and the stripper punch device forms a guide pin from the tip of the stripper punch or the stripper punch itself by means of an actuator attached to the ram, so that the punch receiver is , A die with a through hole large enough for the middle tube of the rivet to pass through, and two substantially circular brake shoe holding plates placed vertically at a position facing each other across the die. This brake shoe holding plate is formed so as to be able to sandwich and support the brake shoe when it comes close to the brake shoe holding plate, and the axis line is set in the sandwiched and supported state. Rotating and the brake shoe stripper, characterized in that the movably formed in the axial direction. 2. The brake shoe stripper according to claim 1, wherein a caulking punch is formed at the tip of the stripper punch device so that it can be attached.