Railway wagon braking exhaust device

Abstract

The utility model relates to the technical field of railway vehicles, in particular to a railway wagon brake exhaust device which comprises a welding frame and a mounting shell, a baffle is fixedly connected to the outer wall of the bottom end of the welding frame, a mounting hole is formed in the inner wall of one side of the mounting shell, and a two-way screw is slidably connected to the inner wall of the mounting hole. The outer wall of one side of the two-way screw rod is fixedly connected with a rocking wheel, the outer walls of the two sides of the two-way screw rod are both connected with centering rods through threads, the outer wall of one side of the top of each centering rod is fixedly connected with a fixing block, and the outer wall of one side of each fixing block is fixedly connected with a pressing block. The exhaust brace is clamped and limited by the V-shaped positioning blocks on the two sides, the tops of the V-shaped positioning blocks are further abutted and limited by the pressing plate and the first non-slip mat to keep a closed state, the phenomenon that in the exhaust process, the exhaust brace is prone to loosening, so that the structure is reset, and the exhaust effect is affected is avoided, and the use efficiency of the brake exhaust device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of railway vehicles, in particular to a brake exhaust device for railway freight cars. Background Art

[0002] At present, the brake exhaust device of railway freight cars mainly has an exhaust valve on the auxiliary air cylinder. The exhaust valve is controlled by the exhaust rod. When the exhaust rod is pulled, the exhaust valve will exhaust air. When the rod is loosened, the exhaust rod will retract and the exhaust valve will stop exhausting air at the same time. Currently, the operators pull out the exhaust rod, then bend down to find a suitable stone or bring a prefabricated wooden wedge to clamp it between the exhaust rod handle ring and the exhaust rod baffle to prevent the exhaust rod from retracting until the air in the auxiliary air cylinder is exhausted.

[0003] After searching the Chinese patent with publication number CN220742997U, a railway freight car brake exhaust device is disclosed. The bidirectional screw is controlled to rotate by the first rocker wheel. Under the limit of the first slide slot, the two L-shaped centering rods will drive the two V-shaped positioning blocks to center and move closer to limit the pulled exhaust strip so that it will not retract, thereby ensuring the thoroughness and exhaust effect of the exhaust, so that workers can perform the exhaust operation more conveniently and quickly, saving time and effort, and improving work efficiency.

[0004] Based on the above search and combined with the prior art, it is found that the above patent has certain defects. The exhaust strip is clamped and limited from both sides directly by V-shaped positioning blocks. However, the exhaust strip limiting effect is poor only by V-shaped positioning blocks. During the exhaust process, the exhaust strip is easy to loosen, resulting in structural reset, affecting the exhaust effect and reducing the use efficiency of the brake exhaust device. Utility Model Content

[0005] The utility model aims to provide a railway freight car brake exhaust device to solve the problems raised in the above background technology.

[0006] The technical solution of the utility model is: a railway freight car brake exhaust device, including a welding frame and a mounting shell, a baffle is connected below the welding frame, the mounting shell is fixed to the middle and lower part of the baffle through a No. 1 mounting plate, the mounting shell is a rectangular frame structure, and a bidirectional screw is installed on the mounting shell, one end of the bidirectional screw passes through the side plate of the mounting shell and extends to the outside of the mounting shell, a rocking wheel is installed at the outer end of the bidirectional screw, two centering rods are symmetrically arranged and movably connected to the bidirectional screw through positive and negative threads, and the rocking wheel drives the two centering rods to move in opposite directions, and is characterized in that a fixed block is installed in the middle of the centering rod, The fixing block is mechanically connected to the pressing block, and the two pressing blocks are symmetrically arranged on the inner sides of the two centering rods. The lower section of the centering rod is mechanically fixed to the No. 2 mounting plate, and the inner side of the No. 2 mounting plate is fixed with a V-shaped positioning block, and the inner wall of the V-shaped positioning block is glued with a second anti-skid pad. The two V-shaped positioning blocks are symmetrically arranged and respectively mounted on the two No. 2 mounting plates. A telescopic rod is installed on the bottom plate of the mounting shell, and the telescopic rod is vertically arranged and the lower end passes through the mounting hole of the pressing plate, and a spring is arranged between the two to form a movable connection; an anti-skid pad is glued to the outer wall of the bottom end of the pressing plate, and pressure blocks are fixed on both sides of the upper surface of the pressing plate, and the pressure blocks and the pressing blocks are matched with inclined surfaces.

[0007] The said inclined surface matching means that the bottom outer wall of the pressing block is provided with inclined surface 1, and the top outer wall of the pressure block is provided with inclined surface 2. The size and inclination angle of inclined surface 1 are adapted to that of inclined surface 2, and the inclined surface on the pressing block is in contact with inclined surface 2 of the pressure block.

[0008] The centering rod is provided with a threaded hole, a guide slot and a mounting slot from top to bottom, wherein the threaded hole is threadedly connected with the bidirectional screw rod, and the guide slot is slidably matched with the mounting shell.

[0009] The bidirectional screw is provided with threads of opposite rotation directions.

[0010] The fixing block is located on the centering rod at a lower position close to the guide sliding groove.

[0011] The centering rod and the second mounting plate are quickly connected via a T-shaped or dovetail plug-in structure.

[0012] The telescopic rod is a stepped shaft structure.

[0013] A connecting hole is provided on the baffle, and the connecting hole is matched with the size of the exhaust strip.

[0014] The utility model provides a railway freight car brake exhaust device through improvement, which has the following improvements and advantages compared with the prior art:

[0015] The utility model is provided with a mounting shell, a bidirectional screw, a pressing block, a pressure block, a centering rod and a telescopic rod. The V-shaped positioning block on the second mounting plate cooperates with the anti-skid pad to clamp and limit the exhaust strip from both sides. When the centering rod is close, the pressing block connected to the fixed block also moves closer, pressing the pressure block on the pressing plate at the bottom of the telescopic rod, and the inclined surface 1 on the pressing block abuts against and slides on the inclined surface 2 of the pressure block. The spring on the telescopic rod is stretched to drive the pressing plate and the anti-skid pad 1 to abut against the top of the V-shaped positioning block to limit the structure from above, further preventing the V-shaped positioning block from loosening and separating to increase the stability of the structure. The exhaust strip is not only clamped and limited by the V-shaped positioning blocks on both sides, but the top of the V-shaped positioning block is also abutted and limited by the pressing plate and the anti-skid pad 1 to keep it in a closed state, so as to avoid the exhaust strip from being easily loosened during the exhaust process, resulting in the structural reset affecting the exhaust effect, thereby improving the use efficiency of the brake exhaust device.

[0016] Secondly: the utility model is provided with a centering rod, a second mounting plate and a V-shaped positioning block. The V-shaped positioning block is installed at the position of the centering rod through the second mounting plate, which is convenient for replacement according to the size of different exhaust strip structures, convenient for disassembly and replacement, increases the scope of application, and improves the practicability of the brake exhaust device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further explained below in conjunction with the accompanying drawings and embodiments:

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the bidirectional screw connection structure of the utility model;

[0020] Figure 3 It is a schematic diagram of the connection structure of the pressing plate of the utility model;

[0021] Figure 4 It is a schematic diagram of the centering rod connection structure of the utility model.

[0022] Description of reference numerals:

[0023] 1. Welding frame;

[0024] 2. Baffle;

[0025] 3. Mounting shell; 31. Mounting plate No. 1;

[0026] 4. Rocking wheel;

[0027] 5. Bidirectional screw;

[0028] 6. Centering rod; 61. Threaded hole; 62. Guide groove; 63. Mounting groove;

[0029] 7. Mounting plate No. 2; 71 top screw;

[0030] 8. V-shaped positioning block;

[0031] 9. Telescopic rod;

[0032] 10. Pressing block; 101. Inclined surface 1;

[0033] 11. Pressure block; 111. Inclined surface 2;

[0034] 12. Press plate;

[0035] 13. Anti-slip mat 1;

[0036] 14. Spring;

[0037] 15. Fixed block;

[0038] 16. Anti-slip mat 2. DETAILED DESCRIPTION

[0039] The utility model is described in detail below, and the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] The utility model provides a railway freight car brake exhaust device through improvement. The technical solution of the utility model is:

[0041] like Figure 1-Figure 4 As shown, a railway freight car brake exhaust device includes a welding frame 1 and a mounting shell 3, and the bottom outer wall of the welding frame 1 is fixedly connected with a baffle 2, and the two form a T-shaped profile. The mounting shell 3 is fixed to the middle and lower part of the baffle 2 through a pair of No. 1 mounting plates 31. After fixing, the mounting shell 3 is located below the welding frame 1 and the two are parallel to each other. The mounting shell 3 is a rectangular frame structure, and a bidirectional screw 5 is mechanically installed in the internal space of the mounting shell, that is, the two ends of the bidirectional screw are mechanically installed on the two side plates of the mounting shell 3 through a bearing assembly, and one end of the bidirectional screw 5 passes through the mounting hole on the side plate of the mounting shell 3 and extends to the outside of the mounting shell, and a rocker 4 is fixedly installed on the outer end of the bidirectional screw 5 on the outer edge, and the above-mentioned bidirectional screw 5 can be operated and rotated by the rocker 4.

[0042] A pair of centering rods 6, two centering rods are symmetrically arranged, wherein the structure of the centering rods 6 is referenced Figure 4Specifically, the centering rod is a vertical plate. On the centering rod 6, a threaded hole 61, a guide slot 62, and a mounting slot 63 are arranged from top to bottom. The threaded hole 61 is used for threaded connection with the bidirectional screw 5, and the guide slot is slidably matched with the lower frame plate of the mounting shell 3. It is easy to understand that shaking the bidirectional screw drives the position of the centering rod to change. The spiral directions of the threaded holes in the two centering rods 6 are set to be opposite. After matching with the bidirectional screw, the two centering rods 6 can be opened and closed by rotating the bidirectional screw.

[0043] In the middle of the centering rod 6, specifically, a fixed block 15 is fixedly installed near the lower position of the above-mentioned guide groove 62, and a pressing block 10 is fixedly connected to the inner side of the fixed block 15. The pressing blocks in the two centering rods are symmetrically arranged on the inner sides of the two centering rods.

[0044] A T-shaped slide rail is arranged in the mounting groove 63 at the bottom of the centering rod 6, and correspondingly, a T-shaped slot is provided on the second mounting plate 7. The second mounting plate 7 can be quickly installed through the mechanical cooperation of the T-shaped slide rail and the T-shaped slot, and a top screw 71 is arranged on the second mounting plate to lock its position.

[0045] The second mounting plate 7 is provided with a slide rail on the inner wall of the mounting groove, and the second mounting plate 7 is slidably connected to the inner wall of the slide rail. Further, the inner side of the second mounting plate 7 is fixedly connected to a V-shaped positioning block 8, and the inner wall of the V-shaped positioning block 8 is bonded with a second anti-slip pad 16, and two V-shaped positioning blocks 8 are symmetrically arranged and respectively installed on two different second mounting plates 7.

[0046] A telescopic rod 9 is fixedly welded to the bottom plate of the mounting shell 3, that is, the top end of the telescopic rod 9 is welded to the mounting shell 3, and the lower end passes through the mounting hole of the pressing plate 12 to form a movable connection between the two, with a small compression elastic distance between the two, and a spring 14 is arranged between the two, that is, the pressing plate 12 has a millimeter-level compression distance relative to the telescopic rod 9.

[0047] The outer wall of the bottom end of the pressing plate 12 is bonded with an anti-skid pad 13 , and both sides of the upper surface of the pressing plate 12 are fixedly connected with pressure blocks 11 .

[0048] Furthermore, a V-shaped positioning block 8 is fixedly connected to the outer wall of one side of the second mounting plate 7, and a second anti-slip pad 16 is bonded to the inner wall of the V-shaped positioning block 8.

[0049] The bottom outer wall of the pressing block 10 is provided with a slope 101, and correspondingly, the top outer wall of the pressure block 11 is provided with a slope 2 111. The size and inclination angle of slope 1 are adapted to those of slope 2. The pressure block 11 and the pressing block 10 are both arranged in a right-angle trapezoid. The slope 1 on the pressing block 10 abuts against and slides on the slope 2 of the pressure block 11. The spring 14 on the telescopic rod 9 is stretched to drive the pressing plate 12 and the anti-slip pad 13 to abut against the top of the V-shaped positioning block 8 to limit the structure from above. That is, this structure enables the two V-shaped positioning blocks 8 to be limited in the height direction after being closed, thereby further ensuring the reliability of clamping the exhaust strip.

[0050] Furthermore, the telescopic rod 9 is a stepped shaft structure, wherein both ends of the spring 14 abut against the second mounting plate 7 and the telescopic rod 9, the centering rod 6 is slidably connected to the outer wall of the mounting shell 3, and the V-shaped positioning blocks 8 are adapted to the size of the anti-slip pad 13.

[0051] A connecting hole is provided on the baffle plate 2, which is adapted to the size of the exhaust strip and is also the mounting hole of the exhaust strip.

[0052] Working principle: When the exhaust strip is pulled to exhaust air, the two-way screw rod 5 is controlled to rotate by the rocker wheel 4, and the centering rod 6 is brought closer. The V-shaped positioning block 8 on the second mounting plate 7 cooperates with the anti-slip pad 16 to clamp and limit the exhaust strip from both sides. When the centering rod 6 is close, the pressing block 10 connected to the fixed block 15 also moves closer, and presses the pressure block 11 on the pressing plate 12 at the bottom of the telescopic rod 9. The pressure block 11 and the pressing block 10 are both arranged in a right-angle trapezoid. The inclined surface 1 on the pressing block 10 contacts and slides on the inclined surface 2 of the pressure block 11, and the spring 14 on the telescopic rod 9 is pulled The extension drives the pressing plate 12 and the anti-skid pad 13 to contact the top of the V-shaped positioning block 8 to limit the structure from above, further preventing the V-shaped positioning block 8 from loosening and separating to increase the stability of the structure. At this time, the flat contact pressing plate 12 of the pressing block 10 and the pressure block 11 no longer drops, and the pressing block 10 and the pressure block 11 are also separated after the centering rod 6 is separated. The pressing plate 12 is reset under the action of the telescopic rod 9 and the spring 14 and no longer limits the V-shaped positioning block 8. The V-shaped positioning block 8 is installed on the position of the centering rod 6 through the No. 2 mounting plate 7, which is convenient for replacement according to the size of different exhaust pull bar structures.

[0053] The technical means disclosed in the utility model are not limited to the technical means disclosed in the above technical means, but also include technical solutions composed of equivalent replacement of the above technical features. Matters not covered in the utility model belong to the common knowledge of those skilled in the art.

Claims

1. A railway freight car brake exhaust device, comprising a welding frame (1) and a mounting shell (3), wherein a baffle (2) is connected to the lower portion of the welding frame (1), the mounting shell (3) is fixed to the middle and lower portion of the baffle (2) via a No. 1 mounting plate (31), the mounting shell (3) is a rectangular frame structure, and a bidirectional screw (5) is mounted on the mounting shell, one end of the bidirectional screw (5) passes through a side plate of the mounting shell (3) and extends to the outside of the mounting shell, a rocker (4) is mounted on the outer end of the bidirectional screw (5), two centering rods are symmetrically arranged and movably connected to the bidirectional screw via forward and reverse threads, and the rocker (4) is rocked to drive the two centering rods to move in opposite directions or toward each other, characterized in that: A fixing block (15) is installed in the middle of the centering rod (6), and the fixing block (15) is mechanically connected to the pressing block (10). The two pressing blocks are symmetrically arranged on the inner sides of the two centering rods. The lower section of the centering rod (6) is mechanically fixed to the second mounting plate (7), and the inner side of the second mounting plate (7) is fixed with a V-shaped positioning block (8). The inner wall of the V-shaped positioning block (8) is bonded with a second anti-skid pad (16). The two V-shaped positioning blocks (8) are symmetrically arranged and respectively mounted on the two second mounting plates (7). A telescopic rod (9) is installed on the bottom plate of the mounting shell (3). The telescopic rod (9) is vertically arranged and the lower end thereof passes through the mounting hole of the pressing plate (12). A spring (14) is arranged between the two to form a movable connection. The outer wall of the bottom end of the pressing plate (12) is bonded with a first anti-skid pad (13). Both sides of the upper surface of the pressing plate (12) are fixed with a pressure-bearing block (11), and an inclined surface is formed between the pressure-bearing block (11) and the pressing block (10).

2. A railway freight car brake exhaust device according to claim 1, characterized in that: The inclined surface matching means that the outer wall at the bottom end of the pressing block (10) is provided with an inclined surface 1 (101), and the outer wall at the top end of the pressure block (11) is provided with an inclined surface 2 (111), the size and inclination angle of the inclined surface 1 and the inclined surface 2 are matched, and the inclined surface on the pressing block (10) contacts the inclined surface 2 of the pressure block (11).

3. A railway freight car brake exhaust device according to claim 1, characterized in that: The centering rod (6) is provided with a threaded hole (61), a guide slot (62), and a mounting slot (63) from top to bottom, wherein the threaded hole (61) and the bidirectional screw rod (5) are threadedly connected, and the guide slot is slidably matched with the mounting shell (3).

4. A railway freight car brake exhaust device according to claim 1, characterized in that: The bidirectional screw is provided with threads with opposite rotation directions.

5. The railway freight car brake exhaust device according to claim 1, characterized in that: The fixing block is located on the centering rod at a lower position close to the guide sliding groove (62).

6. A railway freight car brake exhaust device according to claim 1, characterized in that: The centering rod (6) and the second mounting plate (7) are quickly connected via a T-shaped or dovetail plug-in structure.

7. A railway freight car brake exhaust device according to claim 1, characterized in that: The telescopic rod (9) is a stepped shaft structure.

8. The railway freight car brake exhaust device according to claim 1, characterized in that: The baffle (2) is provided with a connection hole, which is adapted to the size of the exhaust strip.

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