Railway locomotive brake clamp

Abstract

The utility model discloses a railway locomotive brake clamp which comprises an installation base, a hydraulic telescopic rod is fixedly installed in the middle of the installation base in a penetrating mode, limiting frames are fixedly installed on the two sides of the front end of the installation base, a movable frame is fixedly installed on the telescopic portion of the front end of the hydraulic telescopic rod, and clamping arms are rotationally connected to the two sides of the movable frame through pin shafts. Limiting straight sliding grooves are formed in the middles of the clamping arms in a penetrating mode, limiting columns are fixedly installed at the front ends of the limiting frames, brake seats are fixedly installed on the inner sides of the front ends of the clamping arms, and brake pads used for braking the railway locomotive are fixedly installed on the inner sides of the brake seats. A cooling cavity is formed in the inner side of the brake seat, a heat exchange copper pipe is fixedly installed in the cooling cavity, and a liquid inlet pipe and a liquid outlet pipe are fixedly installed at openings in the upper end and the lower end of the heat exchange copper pipe in a communicating mode. According to the utility model, the brake pad can be subjected to heat exchange and cooling while the brake disc of the railway locomotive is clamped and braked.

Description

Technical Field

[0001] The utility model relates to the technical field of railway locomotives, and particularly relates to a braking caliper for railway locomotives. Background Technique

[0002] A railway locomotive, usually also known as a locomotive or engine, is a railway vehicle specifically designed to provide power. It can drive trains on tracks, ensuring that trains can overcome gradients, resistances, etc. and achieve smooth operation. Railway locomotives are mainly divided into two categories: electric locomotives and diesel locomotives. Electric locomotives obtain electrical energy from the catenary through pantographs and convert it into mechanical energy to drive the locomotive; while diesel locomotives rely on internal combustion engines burning diesel to generate power to drive the locomotive forward.

[0003] The main functions of railway locomotives include: Transportation function: The main function of railway locomotives is to undertake the transportation tasks of passengers and goods. As the power source of railway transportation, it can pull multiple carriages and travel quickly and stably on the rails, realizing rapid transportation between regions. Traction function: The locomotive can pull vehicles through its powerful power system and transport the vehicles from the starting point to the end point. This is a key link in realizing railway transportation, ensuring that trains can operate according to the predetermined route and schedule. Power source: The locomotive provides power, enabling the train to overcome gradients, resistances, etc. and achieve smooth operation. Whether it is an electric locomotive or a diesel locomotive, it has sufficient power reserve to meet various transportation needs.

[0004] However, in actual use of the existing technology, with the rapid development of railway transportation, the operating speed of railway locomotives has been continuously increasing, and the load capacity has also been increasing day by day. This poses higher requirements for the braking system of locomotives, especially in terms of heat management during the braking process. During long-term or high-intensity braking, the brake pads and brake discs of traditional braking calipers will generate a large amount of heat due to friction, resulting in a sharp increase in temperature. This high-temperature phenomenon will not only reduce the friction coefficient of the brake material and affect the braking performance, but may also cause heat fade, deformation or even damage of the brake pads, thus endangering the safety of train operation. Content of the Utility Model

[0005] The purpose of the utility model is to provide a braking caliper for railway locomotives to solve the problems raised in the above background technique. With the rapid development of railway transportation, the operating speed of railway locomotives has been continuously increasing, and the load capacity has also been increasing day by day. This poses higher requirements for the braking system of locomotives, especially in terms of heat management during the braking process. During long-term or high-intensity braking, the brake pads and brake discs of traditional braking calipers will generate a large amount of heat due to friction, resulting in a sharp increase in temperature. This high-temperature phenomenon will not only reduce the friction coefficient of the brake material and affect the braking performance, but may also cause heat fade, deformation or even damage of the brake pads, thus endangering the safety of train operation.

[0006] To achieve the above object, the utility model provides the following technical solutions: It includes a mounting base, a hydraulic telescopic rod is fixedly installed through the middle of the mounting base, two limiting frames are fixedly installed on both sides of the front end of the mounting base, a moving frame is fixedly installed on the telescopic part of the front end of the hydraulic telescopic rod, clamping arms are rotatably connected to both sides of the moving frame through pin shafts, a limiting straight chute is penetrated and opened in the middle of the clamping arms, a limiting column is fixedly installed at the front end of the limiting frame, a brake seat is fixedly installed on the inner side of the front end of the clamping arm, and a brake pad for braking a railway locomotive is fixedly installed on the inner side of the brake seat;

[0007] A cooling cavity is opened on the inner side of the brake seat, a heat exchange copper tube is fixedly installed inside the cooling cavity, a liquid inlet pipe and a liquid outlet pipe are fixedly installed and communicated at the openings at the upper and lower ends of the heat exchange copper tube, a heat dissipation round groove is penetrated and opened on the outer side of the cooling cavity, a filter screen is fixedly installed at the opening at the outer side of the heat dissipation round groove, and a heat dissipation fan is fixedly installed on the inner wall of the heat dissipation round groove.

[0008] Preferably, two mounting holes are penetrated and opened on both sides of the mounting base, and the number of mounting holes is two, which are symmetrically distributed on both sides of the mounting base respectively.

[0009] Preferably, the hydraulic telescopic rod is adapted to a hydraulic control oil cylinder.

[0010] Preferably, the number of the limiting frames is two, which are symmetrically distributed on both sides of the front end of the mounting base respectively, and both ends of the moving frame are attached and movably connected to the inner side of the limiting frame.

[0011] Preferably, the limiting column is attached and movably connected to the inner wall of the limiting straight chute.

[0012] Preferably, the openings of the liquid inlet pipe and the liquid outlet pipe penetrate outwards to the outer end of the brake seat, and the outer ends of the openings of the liquid inlet pipe and the liquid outlet pipe are respectively communicated with an external coolant supply pipeline through connecting hoses.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. When a large amount of heat is generated by the friction between the brake pads and the brake disc in the utility model, the heat will be transferred to the brake seat. When the heat is transferred to the brake seat, by controlling the opening of the external coolant supply pipeline, when the external coolant supply pipeline is opened, the coolant will be discharged into the heat exchange copper tube through the liquid inlet pipe and the internal coolant will be discharged outwards through the liquid outlet pipe, so that the coolant circulates and exchanges heat inside the heat exchange copper tube. When the coolant circulates and exchanges heat inside the heat exchange copper tube, it can cooperate with the cooling cavity to exchange heat and cool down the brake seat, thereby realizing clamping and braking of the brake disc of the railway locomotive while cooling down the brake pads;

[0015] 2. When the brake pads clamp and brake the brake disc of the railway locomotive, the present utility model also controls the opening of the cooling fan at the same time. When the cooling fan is turned on, the heat inside the cooling cavity will be discharged outwards through the cooling circular grooves, so that the brake seat and the brake pads can be further cooled through the cooling cavity. At the same time, the filter screen blocks the outer opening of the cooling circular grooves to prevent foreign objects from entering the cooling cavity through the cooling circular grooves, thereby further improving the braking performance and stability by cooling the brake pads. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the overall structure of a braking clamp for a railway locomotive according to the present utility model Figure 1 ;

[0017] Figure 2 Schematic diagram of the overall structure of a braking clamp for a railway locomotive according to the present utility model Figure 2 ;

[0018] Figure 3 Schematic diagram of the partial structure of a braking clamp for a railway locomotive according to the present utility model;

[0019] Figure 4 Schematic cross-sectional view of the partial structure of a braking clamp for a railway locomotive according to the present utility model.

[0020] In the figure: 1. Mounting seat; 2. Mounting hole; 3. Hydraulic telescopic rod; 4. Limiting frame; 5. Moving frame; 6. Clamping arm; 7. Limiting straight chute; 8. Limiting column; 9. Brake seat; 10. Brake pad; 11. Cooling cavity; 12. Heat exchange copper tube; 13. Liquid inlet pipe; 14. Liquid outlet pipe; 15. Cooling circular groove; 16. Filter screen; 17. Cooling fan. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figures 1-4, the present utility model provides a technical solution for a railway locomotive braking clamp: including a mounting base 1, through holes 2 are provided through both sides of the mounting base 1, and the number of the through holes 2 is two, which are symmetrically distributed on both sides of the mounting base 1 respectively, so that the mounting base 1 is fixedly installed through the cooperation of the through holes 2 and mounting bolts. A hydraulic telescopic rod 3 is fixedly installed through the middle of the mounting base 1, and the hydraulic telescopic rod 3 is adapted to a hydraulic control cylinder. Two limit frames 4 are fixedly installed on both sides of the front end of the mounting base 1, and the number of the limit frames 4 is two, which are symmetrically distributed on both sides of the front end of the mounting base 1 respectively. A moving frame 5 is fixedly installed at the telescopic part of the front end of the hydraulic telescopic rod 3, and both ends of the moving frame 5 are attached and movably connected to the inner side of the limit frame 4, so that the linear movement of the moving frame 5 is limited by the limit frame 4. Both sides of the moving frame 5 are rotatably connected to a clamping arm 6 through a pin shaft. A limit straight chute 7 is provided through the middle of the clamping arm 6. A limit post 8 is fixedly installed at the front end of the limit frame 4, and the limit post 8 is attached and movably connected to the inner wall of the limit straight chute 7. A brake seat 9 is fixedly installed on the inner side of the front end of the clamping arm 6, and a brake pad 10 for braking the railway locomotive is fixedly installed on the inner side of the brake seat 9;

[0023] A cooling cavity 11 is provided inside the brake seat 9. A heat exchange copper tube 12 is fixedly installed inside the cooling cavity 11. Liquid inlet pipes 13 and liquid outlet pipes 14 are fixedly installed at the upper and lower openings of the heat exchange copper tube 12 respectively, and the openings of the liquid inlet pipes 13 and the liquid outlet pipes 14 penetrate outward to the outer end of the brake seat 9. The outer ends of the liquid inlet pipes 13 and the liquid outlet pipes 14 are respectively communicated with an external coolant supply pipeline through connecting hoses. A heat dissipation round groove 15 is provided through the outside of the cooling cavity 11. A filter screen 16 is fixedly installed at the outer opening of the heat dissipation round groove 15. A heat dissipation fan 17 is fixedly installed on the inner wall of the heat dissipation round groove 15.

[0024] Working principle: When in use, when it is necessary to brake the railway locomotive, the hydraulic control cylinder is controlled to open the hydraulic telescopic rod 3 to contract. When the hydraulic telescopic rod 3 contracts, it will drive the moving frame 5 to move backward linearly along the inner side of the limit frame 4. When the moving frame 5 moves backward linearly along the inner side of the limit frame 4, it will drive the rear end of the clamping arm 6 to move backward linearly. When the rear end of the clamping arm 6 moves backward linearly, through the acting force generated by the cooperation of the limit straight chute 7 and the limit post 8, it will drive the front end of the clamping arm 6 to swing inward. When the front end of the clamping arm 6 swings inward, it will drive the brake pad 10 to swing inward and clamp through the brake seat 9. When the brake pad 10 swings inward and clamps, the brake disc of the railway locomotive can be clamped and braked;

[0025] When the brake pads 10 clamp and brake the brake disc of a railway locomotive, a large amount of heat will be generated by the friction between the brake pads 10 and the brake disc. When a large amount of heat is generated by the friction between the brake pads 10 and the brake disc, the heat will be transferred to the brake seat 9. When the heat is transferred to the brake seat 9, by controlling the opening of the external coolant supply pipe. When the external coolant supply pipe is opened, the coolant will be discharged into the interior of the heat exchange copper pipe 12 through the liquid inlet pipe 13, and the internal coolant will be discharged outward through the liquid outlet pipe 14, so that the coolant circulates and exchanges heat inside the heat exchange copper pipe 12. When the coolant circulates and exchanges heat inside the heat exchange copper pipe 12, it can cooperate with the cooling cavity 11 to exchange heat and cool down the brake seat 9, so as to realize heat exchange and cooling of the brake pads 10 while clamping and braking the brake disc of the railway locomotive;

[0026] Meanwhile, when the brake pads 10 clamp and brake the brake disc of a railway locomotive, by controlling the opening of the cooling fan 17. When the cooling fan 17 is opened, the heat inside the cooling cavity 11 will be discharged outward through the cooling round groove 15, so that the cooling cavity 11 further cools down the brake seat 9 and the brake pads 10. At the same time, the filter screen 16 blocks the outer opening of the cooling round groove 15 to prevent foreign objects from entering the interior of the cooling cavity 11 through the cooling round groove 15, thereby further improving the braking performance and stability by cooling down the brake pads 10.

[0027] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0028] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A railway locomotive brake caliper, characterized in that: It includes a mounting base (1). A hydraulic telescopic rod (3) is fixedly installed through the middle of the mounting base (1). On both sides of the front end of the mounting base (1), limit frames (4) are fixedly installed. The telescopic part at the front end of the hydraulic telescopic rod (3) is fixedly installed with a moving frame (5). On both sides of the moving frame (5), clamping arms (6) are rotatably connected through pin shafts. A limit straight chute (7) is formed through the middle of the clamping arm (6). A limit post (8) is fixedly installed at the front end of the limit frame (4). A brake seat (9) is fixedly installed on the inner side of the front end of the clamping arm (6). A brake pad (10) for braking a railway locomotive is fixedly installed inside the brake seat (9). A cooling cavity (11) is formed inside the brake seat (9). A heat exchange copper tube (12) is fixedly installed inside the cooling cavity (11). Liquid inlet pipes (13) and liquid outlet pipes (14) are fixedly installed at the openings at the upper and lower ends of the heat exchange copper tube (12). A heat dissipation round groove (15) is formed through the outside of the cooling cavity (11). A filter screen (16) is fixedly installed at the opening at the outside of the heat dissipation round groove (15). A heat dissipation fan (17) is fixedly installed on the inner wall of the heat dissipation round groove (15).

2. The railway locomotive braking caliper according to claim 1, characterized in that: Mounting holes (2) are formed through both sides of the mounting base (1), and the number of the mounting holes (2) is two, which are symmetrically distributed on both sides of the mounting base (1).

3. The railway locomotive brake caliper according to claim 2, characterized in that: The hydraulic telescopic rod (3) is adapted to a hydraulic control oil cylinder.

4. The railway locomotive braking caliper according to claim 3, characterized in that: The number of the limit frames (4) is two, which are symmetrically distributed on both sides of the front end of the mounting base (1). Both ends of the moving frame (5) are in fitting and movable connection with the inner sides of the limit frames (4).

5. The railway locomotive braking caliper according to claim 4, characterized in that: The limit post (8) is in fitting and movable connection with the inner wall of the limit straight chute (7).

6. The railway locomotive brake caliper according to claim 5, characterized in that: The openings of the liquid inlet pipe (13) and the liquid outlet pipe (14) penetrate outwards to the outer ends of the brake seat (9), and the outer ends of the openings of the liquid inlet pipe (13) and the liquid outlet pipe (14) are respectively communicated with an external coolant supply pipeline through connecting hoses.

Images