brake shoe

Abstract

A wheel chock (10) is provided for a railcar. The wheel chock (10) comprises a sole (11) and a support (12) arranged on the sole (11). According to the invention, a shock-absorbing unit (14) is arranged on the support (12) to mitigate the impact of a running wheel of the railcar.

Description

[0001] The present invention relates to a brake shoe for a rail car.

[0002] Brake shoes for rail vehicles are known in the art. For example, DE 102019127371 A1 describes a brake shoe that rests on a rail and is suitable for braking a moving rail vehicle or for preventing a stationary rail vehicle from rolling away. The brake shoe comprises a base and a support. The brake shoe also has a predetermined breaking point and is designed such that the brake shoe fails at the predetermined breaking point if a predefined load on the support is exceeded.

[0003] The invention is based on the object of providing an improved brake shoe.

[0004] This object is achieved with a brake shoe according to claim 1. Advantageous developments of the invention are specified in the subclaims.

[0005] The inventive wheel chock for a rail car comprises a base and a support arranged on the base. According to the invention, a shock absorbing unit is arranged on the support to mitigate the impact of a wheel of the rail car that is running into the ground.

[0006] This advantageously ensures that any impact on the brake shoe is dampened. The impact does not cause the brake shoe to move far forward, in the direction of the impact, as can happen with undamped brake shoes. The brake shoe according to the invention thus remains close to the rail car even after an impact and is easier to find again.

[0007] In an advantageous embodiment of the inventive brake shoe, the shock-absorbing unit comprises a contact element and a shaft connected to the contact element. The shaft is mounted in the support so that it can be displaced against a spring force.

[0008] This provides a design in which the shock absorbing unit is advantageously integrated into the support frame. The shock absorbing unit is thus well protected from contamination.

[0009] In an advantageous alternative embodiment of the inventive brake shoe, the shock-absorbing unit comprises a contact element, two webs rigidly connected to the contact element, and rubber dampers. The rubber dampers are arranged between the support and the webs. In an advantageous alternative embodiment of the inventive brake shoe, the shock-absorbing unit has a contact element with a tooth-shaped structure and a rubber element with a tooth-shaped structure that engages the tooth-shaped structure of the contact element.

[0010] The use of elastomers in the rubber dampers and rubber element takes advantage of the superior damping properties compared to metallic spring elements. Furthermore, a relatively lightweight design of the brake shoe is achieved. These brake shoes are easier to handle due to their lower weight.

[0011] In an advantageous alternative embodiment of the inventive brake shoe, the shock-absorbing unit comprises a contact element and a flat spring. The flat spring is arranged between the contact element and the bracket in such a way that the contact element can be moved toward the bracket against the spring force of the flat spring.

[0012] This advantageously enables a very robust design of the shock absorption unit.

[0013] Further advantages of the present invention will become apparent from the detailed description and the figures. The invention is explained in more detail with reference to the figures and the following description. They show: Fig. 1 shows an exemplary brake shoe according to the invention in an overview sketch; Fig. 2 the brake shoe in an exemplary first embodiment; Fig. 3 the brake shoe in an exemplary second embodiment in a first view; Fig. 4 the brake shoe in the second embodiment in a second view; Fig. 5 the brake shoe in an exemplary third embodiment in a first view; Fig. 6 the brake shoe in the third embodiment in a second view; Fig. 7 the brake shoe in an exemplary fourth embodiment in a first view; and Fig. 8 the brake shoe in the fourth embodiment in a second view.

[0014] In the Fig. Figures 1 to 8 schematically illustrate the inventive chock 10 in various exemplary embodiments. The term "chock" in this invention also includes wheel chocks or the like. Furthermore, the chock 10 can also be designed as a double chock, with a first chock 10 and a second chock 10 connected to each other by a crossbar.

[0015] The brake shoe 10, as is conventional, has a sole 11 and a block 12 arranged on the sole 11. The block 12 comprises a run-up side 26. This run-up side 26 is directed toward a wagon wheel of the wagon to be braked during operation. The wagon wheel is not shown. In addition, the brake shoe 10 preferably comprises a handle 13. The handle 13 is arranged on a side opposite the run-up side 26.

[0016] In the Fig. 1, the brake shoe 10 is sketched by way of example. According to the invention, the brake shoe 10 has a shock absorption unit 14. The shock absorption unit 14 is arranged on the bracket 12 of the brake shoe 10. The shock absorption unit 14 is arranged on the approach side 26 of the bracket 12. On the approach side 26, the approaching wagon wheel exerts an impulse 20 on the brake shoe 10. The shock absorption unit 14 is designed to mitigate an effect exerted by the approaching wagon wheel, i.e., an impact, on the brake shoe 10. For this purpose, the shock absorption unit 14 is designed to be flexible, in particular, it is designed to be resilient. Preferably, the shock absorption unit 14 is also designed to be dampening.

[0017] In the Fig. 2 shows a first exemplary embodiment of the brake shoe 10. The shock absorption unit 14 comprises a contact element 15 and a shaft 16 rigidly connected to the contact element 15. The contact element 15 is contacted by the approaching wagon wheel. The impulse 20 exerted by the approaching wagon wheel is transmitted to the shock absorption unit 14 by the contact element 15. The shaft 16 is movably mounted in the bracket 12. The shaft 16 is displaceably mounted in the direction of the impulse 20. The shaft 16 is displaceable against the spring force of a return spring 18. The shaft 16 is mounted in such a way that it rests against a friction surface 17. Rubbing of the shaft 16 against this friction surface 17 while it is moving slows the speed of the shaft 16 and thus dampens the shock. The shock absorption unit 14 comprises in particular a pressure spring 19 with which the shaft 16 is pressed against the friction surface.The pressure spring 19 is arranged in particular in a recess of the shaft 16.

[0018] In the Fig. 3 and Fig. 4 a second exemplary embodiment of the brake shoe 10 is outlined. Fig. 3 shows a side view and Fig. 4 shows a vertical cross-section of the brake shoe 10. In this exemplary embodiment, the shock-absorbing unit 14 is formed from the contact element 15, two webs 22 rigidly connected to the contact element 15, and rubber dampers 21. The webs 22 are, in particular, formed integrally with the contact element. The rubber dampers 21 are arranged between the bracket 12 and the webs 22. The bracket 12 thus serves as an abutment for the rubber dampers 21. In particular, the rubber dampers 21 are arranged at right angles to one another so that they can act together in both the vertical and horizontal directions. The bracket 12 is preferably provided with a rib 23 positioned between the webs 22. The rubber dampers 21 are preferably formed from at least one elastomer. The rib 23 limits the spring travel of the shock-absorbing unit 14. The rib 23 limits lateral movement of the webs 22.

[0019] In the Fig. 5 and Fig. 6 shows a third exemplary embodiment of the brake shoe 10. Fig. 5 shows a side view and Fig. 6 shows a horizontal cross-section of the brake shoe 10. In this exemplary embodiment, the shock absorption unit 14 is formed from the contact element 15 and a rubber element 24. The contact element 15 has a tooth-shaped structure on the side facing the rubber element 24. The rubber element 24 is preferably formed from at least one elastomer. The rubber element 24 also has a tooth-shaped structure on the side facing the contact element 15, which engages with the tooth-shaped structure of the contact element 15. The tooth-shaped structures are designed such that they can slide into one another in the event of an impact. In particular, the shock absorption unit 14 has a return element (not shown), which is designed to return the contact element 15 and the rubber element 24 to their original positions after an impact.

[0020] In the Fig. 7 and Fig. 8 shows a fourth exemplary embodiment of the brake shoe 10. Fig. 7 shows a side view and Fig. 8 shows a horizontal cross-section of the brake shoe 10. The shock absorption unit 14, in this exemplary embodiment, is formed from the contact element 15 and a flat spring 25. The flat spring 25 is arranged between the contact element 15 and the bracket 12. The flat spring 25 is arranged such that the contact element 15 can be moved against a spring force of the flat spring 25 in the direction of the bracket 12. The flat spring 25 is preferably at least one curved plate. In particular, the flat spring 25 has a multi-layer construction, similar to a leaf spring. The flat spring 25 is designed such that it deforms elastically when the contact element 15 moves and rubs against the contact element 15 and / or the bracket 12. This dampens the shock. List of reference symbols: 10 Obstacle 11 Sole 12 goats 13 Handle 14 Shock absorption unit 15 Contact element 16 shaft 17 Friction surface 18 Return spring 19 Pressure spring 20 pulse 21 rubber dampers 22 jetty 23 rib 24 rubber element 25 flat springs 26 Casserole side QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] DE 102019127371 A1

[0002]

Claims

[1] Brake shoe (10) for a rail car, with a sole (11) and a bracket (12) arranged on the sole (11), characterized by that a shock absorption unit (14) is arranged on the bracket (12) to mitigate a shock from a wheel of the rail carriage running up. [2] Brake shoe (10) according to claim 1, characterized by that the shock absorption unit (14) comprises a contact element (15) and a shaft (16) connected to the contact element (15), wherein the shaft (16) is mounted in the bracket (12) so as to be displaceable against a spring force. [3] Brake shoe (10) according to claim 1, characterized by that the shock absorption unit (14) comprises a contact element (15), two webs (22) rigidly connected to the contact element and rubber dampers (21), wherein the rubber dampers (21) are arranged between the bracket (12) and the webs (22). [4] Brake shoe (10) according to claim 1, characterized bythat the shock absorption unit (14) comprises a contact element (15) with a tooth-shaped structure and a rubber element (24) with a tooth-shaped structure which engages in the tooth-shaped structure of the contact element (15). [5] Brake shoe (10) according to claim 1, characterized by that the shock absorption unit (14) comprises a contact element (15) and a flat spring (25), wherein the flat spring (25) is arranged between the contact element (15) and the bracket (12) in such a way that the contact element (15) is movable against a spring force of the flat spring (25) in the direction of the bracket (12).

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