Railway vehicle brake mechanism

Abstract

This utility model belongs to the field of rail vehicle braking technology, specifically relating to a rail vehicle braking mechanism, including an I-beam rail and a railcar. The railcar has rollers inside, which contact the I-beam rail. A mounting shell is fixedly connected to the lower center of the railcar. A fixing plate is fixedly connected to the inner right side wall of the mounting shell. A screw is mounted on the inner wall of the fixing plate via a bearing. A screw cylinder is threadedly connected to the outer side of the screw, and the screw cylinder is slidably connected to the mounting shell. This utility model, by connecting a ring electromagnet to a pulsed current, causes the magnetic attraction direction of the ring electromagnet to change intermittently, thereby intermittently attracting the magnetic sheet. Combined with the deformation of an elastic element, this allows the brake pads to continuously engage and disengage from the rollers, providing effective braking of the rollers and preventing the railcar from veering off course due to brake pad lock-up.

Description

Technical Field

[0001] This utility model relates to the field of rail vehicle braking technology, specifically a rail vehicle braking mechanism. Background Technology

[0002] As is well known, the braking system of rail vehicles is a core component that ensures the safe operation of rail vehicles, and its design must meet stringent requirements such as braking, reliability, and environmental adaptability.

[0003] A novel dual-stage braking device for rail vehicles is disclosed in the utility model patent with patent authorization announcement number CN209176710U. The device includes two wheels that are symmetrically arranged and are horizontally connected by a rotating shaft. A fixed shaft is slidably mounted on the middle position of the outer surface of the rotating shaft. A screw is embedded in the lower end of the fixed shaft, and a slider is mounted on the outer surface of the screw.

[0004] However, existing rail vehicle braking mechanisms also have certain shortcomings. Most existing rail vehicle braking mechanisms use a locking mechanism to brake the rail vehicle. Due to the influence of moving inertia, unilateral locking can easily cause the rail vehicle to deviate due to inertia. Utility Model Content

[0005] The purpose of this utility model is to provide a braking mechanism for rail vehicles, which solves the problem that existing rail vehicle braking mechanisms mostly use a locking mechanism to brake the rail vehicle. Due to the influence of moving inertia, unilateral locking can easily cause the rail vehicle to deviate due to inertia.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a rail vehicle braking mechanism, comprising an I-beam rail and a railcar, wherein the railcar has rollers inside, the rollers contacting the I-beam rail, a mounting shell is fixedly connected to the lower middle part of the railcar, a fixing plate is fixedly connected to the inner right side wall of the mounting shell, a screw is mounted on the inner wall of the fixing plate via a bearing, a screw cylinder is threadedly connected to the outer side of the screw, the screw cylinder is slidably connected to the mounting shell, an auxiliary plate is fixedly connected to the lower end of the screw cylinder, a bevel gear is fixedly sleeved on the outer side of the screw, a servo motor is fixedly mounted on the left end of the mounting shell, the servo motor is rotatably connected to the mounting shell, and a braking mechanism is provided on the railcar.

[0007] Preferably, a guide plate is fixedly connected to the right side of the screw barrel. The guide plate is slidably connected to the fixed plate and contacts the top inner side of the mounting shell. The screw barrel can be moved and guided by the guide plate.

[0008] Preferably, the lower end of the auxiliary plate is provided with a plurality of friction grooves, which are evenly distributed on the auxiliary plate. The friction effect of the auxiliary plate can be improved by setting the friction grooves.

[0009] Preferably, a second bevel gear is fixedly sleeved on the outer side of the output shaft of the servo motor. The second bevel gear meshes with the first bevel gear. Through the cooperation of the second bevel gear and the first bevel gear, the screw can be driven to rotate, thereby driving the screw barrel to move.

[0010] Preferably, the braking mechanism includes a support plate, a support plate is fixedly connected to the end face of the track vehicle, a support cylinder is fixedly connected to the end face of the support plate, an annular electromagnet is fixedly installed on the inner side wall of the support cylinder, a telescopic rod is slidably connected to the inner wall of the annular electromagnet, a brake block is fixedly connected to the end face of the telescopic rod near the roller, the brake block is slidably connected to the support cylinder, a magnetic sheet is fixedly connected to the side of the telescopic rod, the magnetic sheet is slidably connected to the support cylinder, and an end plate is fixedly connected to the other end of the telescopic rod. Through the combined use of the annular electromagnet and the magnetic sheet, the telescopic rod can drive the brake block to contact the roller, thereby ensuring the braking effect of the brake block.

[0011] Preferably, the brake block is cylindrical in shape and is made of wear-resistant rubber. The use of wear-resistant rubber material enables the brake block to have good wear resistance and durability.

[0012] Preferably, an elastic element is bonded to the end face of the end plate, and the other end of the elastic element is bonded to the support cylinder. The end plate can be connected and used by means of the elastic element.

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

[0014] 1. This utility model connects a ring electromagnet to a pulsed current, causing the magnetic attraction direction of the ring electromagnet to change intermittently, thereby intermittently attracting the magnetic sheet. Combined with the deformation of the elastic element, the brake block can continuously come into contact with and separate from the roller, effectively braking the roller and avoiding the problem of inertial deviation of the track vehicle caused by the brake block locking up.

[0015] 2. This utility model uses a combination of servo motor and bevel gear to drive the screw to rotate. With the threaded connection, it can drive the screw barrel to move, thereby causing the auxiliary plate to contact the ground. With the help of the friction groove, it can improve the auxiliary friction braking effect on the railcar. Attached Figure Description

[0016] Figure 1 This is a perspective view of the overall structure of this utility model;

[0017] Figure 2 For the present utility model Figure 1 A bottom view;

[0018] Figure 3For the present utility model Figure 1 A schematic diagram of the internal structure of the support cylinder;

[0019] Figure 4 For the present utility model Figure 1 A front sectional view;

[0020] Figure 5 For the present utility model Figure 3 Enlarged view of point A;

[0021] Figure 6 For the present utility model Figure 4 Enlarged view of the mounting shell.

[0022] In the diagram: 1. I-beam rail; 2. Railcar; 3. Roller; 4. Mounting housing; 5. Fixing plate; 6. Screw; 7. Screw barrel; 8. Guide plate; 9. Auxiliary plate; 10. Friction groove; 11. Bevel gear one; 12. Servo motor; 13. Bevel gear two; 14. Braking mechanism; 141. Support plate; 142. Support cylinder; 143. Ring electromagnet; 144. Telescopic rod; 145. Brake block; 146. Magnetic sheet; 147. End plate; 148. Elastic element. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 A braking mechanism for a rail vehicle includes an I-beam rail 1 and a railcar 2. The railcar 2 has rollers 3 inside, which contact the I-beam rail 1. A mounting shell 4 is fixedly connected to the lower middle part of the railcar 2. A fixing plate 5 is fixedly connected to the inner right side wall of the mounting shell 4. A screw 6 is mounted on the inner wall of the fixing plate 5 via a bearing. A screw cylinder 7 is threadedly connected to the outer side of the screw 6 and is slidably connected to the mounting shell 4. An auxiliary plate 9 is fixedly connected to the lower end of the screw cylinder 7. A bevel gear 11 is fixedly sleeved on the outer side of the screw 6. A servo motor 12 is fixedly mounted on the left end of the mounting shell 4 and is rotatably connected to the mounting shell 4.

[0025] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 A guide plate 8 is fixedly connected to the right side of the screw barrel 7. The guide plate 8 is slidably connected to the fixed plate 5. The guide plate 8 contacts the top inner side of the mounting shell 4. The screw barrel 7 can be moved and guided by the guide plate 8. Multiple friction grooves 10 are opened at the lower end of the auxiliary plate 9. The multiple friction grooves 10 are evenly distributed on the auxiliary plate 9. The friction effect of the auxiliary plate 9 can be improved by the setting of the friction grooves 10. A bevel gear 2 13 is fixedly sleeved on the outside of the output shaft of the servo motor 12. The bevel gear 2 13 meshes with the bevel gear 11. The screw 6 can be driven to rotate by the cooperation of the bevel gear 2 13 and the bevel gear 11, thereby driving the screw barrel 7 to move.

[0026] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 The track vehicle 2 is equipped with a braking mechanism 14, which includes a support plate 141. The support plate 141 is fixedly connected to the end face of the track vehicle 2, and a support cylinder 142 is fixedly connected to the end face of the support plate 141. An annular electromagnet 143 is fixedly installed on the inner wall of the support cylinder 142. A telescopic rod 144 is slidably connected to the inner wall of the annular electromagnet 143. A brake block 145 is fixedly connected to the end face of the telescopic rod 144 near the roller 3. The brake block 145 is slidably connected to the support cylinder 142. A magnetic sheet 146 is fixedly connected to the side of the telescopic rod 144. The magnetic sheet 146 is slidably connected to the support cylinder 142. An end plate 147 is fixedly connected to the other end of the telescopic rod 144. Through the cooperation of the annular electromagnet 143 and the magnetic sheet 146, the telescopic rod 144 can drive the brake block 145 to contact the roller 3 to ensure the braking effect of the brake block 145.

[0027] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 The brake block 145 is cylindrical in shape and is made of wear-resistant rubber. The wear-resistant rubber material gives the brake block 145 good wear resistance and durability. An elastic element 148 is bonded to the end face of the end plate 147. The other end of the elastic element 148 is bonded to the support cylinder 142. The elastic element 148 allows the end plate 147 to be connected and used.

[0028] The specific implementation process of this utility model is as follows: In use, by connecting the annular electromagnet 143 to a pulse current, the magnetic attraction direction of the annular electromagnet 143 is intermittently changed. When the annular electromagnet 143 magnetically attracts the magnetic sheet 146, it can pull the telescopic rod 144 to move, thereby driving the brake block 145 to move, so that the brake block 145 contacts the roller 3. When the telescopic rod 144 moves, it can drive the end plate 147 to move, causing the elastic element 148 to deform. When the annular electromagnet 143 no longer magnetically attracts the magnetic sheet 146, the elastic element 148 can be restored to its original shape, thereby pushing the telescopic rod 144 to reset and move, thereby driving the brake block 145 to disengage from the roller 3. This process is repeated, so that the brake block 145 can continuously contact and separate from the roller 3, avoiding the problem of inertial deviation of the railcar 2 that is easily caused by simple locking brake.

[0029] When the braking mechanism 14 is running, the output shaft is driven to rotate by the servo motor 12, which in turn drives the second bevel gear 13 to rotate. Under the meshing relationship, the second bevel gear 13 drives the first bevel gear 11 to rotate, which in turn drives the screw 6 to rotate. Under the threaded connection, the screw barrel 7 can be driven to move, which drives the guide plate 8 to slide along the inner wall of the fixed plate 5 to guide the movement of the screw barrel 7, so that the screw barrel 7 drives the auxiliary plate 9 to move down stably, and finally makes the auxiliary plate 9 contact the ground, which is used to assist braking of the railcar 2.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A braking mechanism for a rail vehicle, comprising an I-beam rail (1) and a railcar (2), characterized in that: The track car (2) is equipped with rollers (3) inside, which are in contact with the I-beam rail (1). The lower middle part of the track car (2) is fixedly connected to a mounting shell (4). The inner right side wall of the mounting shell (4) is fixedly connected to a fixing plate (5). The inner wall of the fixing plate (5) is equipped with a screw (6) through a bearing. The outer side of the screw (6) is connected to a screw cylinder (7) through a thread. The screw cylinder (7) is slidably connected to the mounting shell (4). The lower end of the screw cylinder (7) is fixedly connected to an auxiliary plate (9). The outer side of the screw (6) is fixedly sleeved with a bevel gear (11). The left end of the mounting shell (4) is fixedly installed with a servo motor (12). The servo motor (12) is rotatably connected to the mounting shell (4). The track car (2) is equipped with a braking mechanism (14).

2. The braking mechanism for a rail vehicle according to claim 1, characterized in that: A guide plate (8) is fixedly connected to the right side of the screw cylinder (7). The guide plate (8) is slidably connected to the fixed plate (5). The guide plate (8) is in contact with the top inner side of the mounting shell (4).

3. The braking mechanism for a rail vehicle according to claim 1, characterized in that: The lower end of the auxiliary plate (9) is provided with a plurality of friction grooves (10), which are evenly distributed on the auxiliary plate (9).

4. A braking mechanism for rail vehicles according to claim 1, characterized in that: The output shaft of the servo motor (12) is fixedly sleeved with a second bevel gear (13), which meshes with a first bevel gear (11).

5. A braking mechanism for a rail vehicle according to claim 1, characterized in that: The braking mechanism (14) includes a support plate (141). The end face of the railcar (2) is fixedly connected to the support plate (141). The end face of the support plate (141) is fixedly connected to the support cylinder (142). The inner wall of the support cylinder (142) is fixedly installed with an annular electromagnet (143). The inner wall of the annular electromagnet (143) is slidably connected to a telescopic rod (144). The end face of the telescopic rod (144) near the roller (3) is fixedly connected to a brake block (145). The brake block (145) is slidably connected to the support cylinder (142). The side of the telescopic rod (144) is fixedly connected to a magnetic sheet (146). The magnetic sheet (146) is slidably connected to the support cylinder (142). The other end of the telescopic rod (144) is fixedly connected to an end plate (147).

6. A braking mechanism for a rail vehicle according to claim 5, characterized in that: The brake block (145) is cylindrical in shape and is made of wear-resistant rubber.

7. A braking mechanism for a rail vehicle according to claim 5, characterized in that: An elastic element (148) is bonded to the end face of the end plate (147), and the other end of the elastic element (148) is bonded to the support cylinder (142).

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