Manual braking mechanism of railway wagon

Abstract

The utility model belongs to the technical field of railway wagon equipment manufacturing, and provides a railway wagon manual braking mechanism which comprises a hand wheel, a worm, a clamping plate, a worm gear, a connecting shaft and a locking mechanism, the hand wheel is connected with the worm, the worm and the worm gear are supported and meshed through the clamping plate, and the worm gear is connected with a pull rod of a railway wagon brake. The worm gear is driven by the worm to rotate to form braking tension of the railway wagon, a connecting shaft is arranged between the worm and the clamping plate, the worm can rotate around the connecting shaft in the horizontal direction, and a locking mechanism is arranged on the worm and controls the meshing state of the worm and the worm gear. The manual braking device is simple, practical and high in structural strength, manual braking of the railway wagon can be efficiently achieved, and meanwhile misoperation of manual braking can be effectively avoided through the locking mechanism.

Description

TECHNICAL FIELD

[0001] The utility model belongs to railway freight car equipment manufacturing technical field relates to railway freight car's brake, specifically a kind of railway freight car hand brake mechanism. BACKGROUND

[0002] Hand brake mechanism is the important component of railway freight car, for speed regulation or parking when shunting operation, and prevent vehicle from running and accidental movement.Currently railway freight car hand brake mainly by hand wheel, box shell, base, functional handle, driving shaft, chain reel shaft, ratchet wheel, large gear, pinion, clutch, chain and locking mechanism etc., relevant parts are connected using riveting, applicable to load, long and large marshalling, but the spare parts of the mechanism are more, complex structure, and maintenance cost is big. SUMMARY

[0003] The utility model aims at providing a kind of railway freight car hand brake mechanism, simple structure, easy to operate, it is easy to maintain for small batch marshalling.

[0004] The utility model discloses the technical scheme that the above-mentioned purpose is adopted to realize:

[0005] A kind of railway freight car hand brake mechanism, including hand wheel, worm, clamping plate, worm wheel, connecting shaft and locking mechanism, hand wheel connects worm, worm and worm wheel are supported and engaged by clamping plate, worm wheel is connected with the pull rod of railway freight car brake, worm wheel rotates under the driving of worm and forms the braking pull of railway freight car, connecting shaft is arranged between worm and clamping plate, worm can rotate in horizontal direction around connecting shaft, locking mechanism is provided on worm, and locking mechanism controls the engagement state of worm and worm wheel.

[0006] Further, the clamping plate is formed by sheet metal pressing, including upper clamping plate and lower clamping plate, the upper clamping plate and the lower clamping plate are assembled by three groups of stud sleeve kits, the stud sleeve kit includes stud, stud sleeve, slotted nut and split pin, the stud sleeve is fixed between the upper clamping plate and the lower clamping plate by welding a circular tube and a washer, the stud is sleeved in the stud sleeve, and the stud is positioned by the slotted nut and the split pin at both ends.

[0007] Further, the stud is used to connect the hand brake mechanism with the railway freight car body.

[0008] Further, the first stud sleeve kit of the three groups of stud sleeve kits is arranged at the rotation center of the worm wheel, is used for the rotating shaft of worm wheel, the second stud sleeve kit is arranged at one side of connecting shaft, and the third stud sleeve kit is arranged at the end of worm.

[0009] Further, the connecting shaft is composed of two semicircular rotating shafts, semicircular grooves are respectively processed in the two semicircular rotating shafts, the connecting shaft is penetrated into the upper clamping plate and the lower clamping plate at both ends, and the two semicircular grooves in the middle form the circular positioning hole of worm.

[0010] Further, the locking mechanism comprises a connecting lug, a flap and a positioning pin, the flap is fixedly connected with the railway wagon body frame through the connecting lug, a long hole is arranged on the flap for moving supporting the worm, and the positioning pin is used for fixing the position of the worm in the long hole of the flap.

[0011] Further, the positioning pin comprises a round rod and a stop edge, the round rod is inserted and placed through a sleeve ring on the flap, and the stop edge is arranged at the middle part of the round rod.

[0012] The railway wagon brake mechanism has the advantages that:

[0013] 1. simple structure, light and convenient to use;

[0014] 2. the clamping plate is made of sheet metal processing and pressing, and the structural strength of the clamping plate is enhanced;

[0015] 3. the design and application of the stud sleeve kit can not only effectively control the distance between the upper clamping plate and the lower clamping plate, but also enhance the structural strength of the clamping plate after assembly;

[0016] 4. the structural design of the connecting shaft not only meets the horizontal positioning and rotation of the worm, but also is beneficial to the disassembly and maintenance of the worm;

[0017] 5. the connecting shaft and the worm end stud sleeve kit are used in cooperation to effectively control the transverse movement of the worm;

[0018] 6. the locking mechanism can control the meshing state of the worm gear and the worm, and effectively prevent the misoperation of the manual brake mechanism. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structural schematic view of the utility model;

[0020] Figure 2 is a structural schematic view of the worm gear structure connection in the utility model;

[0021] Figure 3 is a structural schematic view of the connecting shaft assembly structure in the utility model;

[0022] Figure 4 is a structural schematic view of the stud sleeve in the utility model;

[0023] Figure 5 is a structural schematic view of the locking mechanism in the utility model;

[0024] Figure 6 is a schematic view of the locking mechanism and the worm in cooperation in the utility model;

[0025] Figure 7 is a brake principle diagram of the railway wagon brake mechanism;

[0026] In the diagram: 1. Handwheel; 2. Worm gear; 3. Clamping plate; 3-1. Upper clamping plate; 3-2. Lower clamping plate; 4. Worm gear; 5. Connecting shaft; 5-1. First semi-circular rotating shaft; 5-2. Second semi-circular rotating shaft; 6. Locking mechanism; 6-1. Connecting lug; 6-2. Hinge; 6-3. Positioning pin; 6-31. Round rod; 6-32. Edge retainer; 6-4. Long hole; 7. Pull rod; 8. Stud; 9. Stud sleeve; 9-1. Round tube; 9-2. Washer; 10. Slotted nut; 11. Cotter pin; 12. First stud assembly; 13. Second stud assembly; 14. Third stud assembly; 15. Braking mechanism. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings:

[0028] A manual braking mechanism for railway freight cars, such as Figures 1 to 7 As shown, it includes a handwheel 1, a worm gear 2, a clamping plate 3, a worm wheel 4, a connecting shaft 5, and a locking mechanism 6. The handwheel 1 is connected to the worm gear 2. The worm gear 2 and the worm wheel 4 are supported and engaged by the clamping plate 3. The worm wheel 4 is connected to the pull rod 7 of the railway freight car braking mechanism. The worm wheel 4 rotates under the drive of the worm gear 2 to form the braking force of the railway freight car. A connecting shaft 5 is set between the worm gear 2 and the clamping plate 3. The worm gear 2 can rotate horizontally around the connecting shaft 5. A locking mechanism 6 is set on the worm gear 2. The locking mechanism 6 controls the meshing state of the worm gear 2 and the worm wheel 4.

[0029] The clamping plate 3 is formed by pressing sheet metal, which increases its structural strength. Clamping plate 3 includes an upper clamping plate 3-1 and a lower clamping plate 3-2, assembled from three sets of stud assemblies. These stud assemblies connect the manual braking mechanism to the railway freight car body. Each stud assembly includes a stud 8, a stud sleeve 9, a slotted nut 10, and a cotter pin 11. The stud sleeve 9, consisting of a round tube 9-1 and a washer 9-2, is welded and fixed between the upper clamping plate 3-1 and the lower clamping plate 3-2, effectively controlling the distance between them and increasing the structural strength of the assembled clamping plate 3. The stud 8 is fitted inside the stud sleeve 9, and its ends are positioned using slotted nuts 10 and cotter pins 11. The stud 8 is used to connect the manual braking mechanism to the railway freight car body.

[0030] Among them, the first stud assembly 12 is set at the rotation center of the worm gear 4 and is used as the shaft of the worm gear 4; the second stud assembly 13 is set on one side of the connecting shaft 5; and the third stud assembly 14 is set at the end of the worm 2. The third stud assembly 14 works in conjunction with the connecting shaft 5 to effectively control the lateral movement of the screw.

[0031] The connecting shaft 5 is composed of a first half-circular rotating shaft 5-1 and a second half-circular rotating shaft 5-2, and a semicircular groove is formed in each of the first half-circular rotating shaft 5-1 and the second half-circular rotating shaft 5-2. The connecting shaft 5 penetrates the upper clamping plate 3-1 and the lower clamping plate 3-2 at two ends, and the two semicircular grooves in the middle of the first half-circular rotating shaft 5-1 and the second half-circular rotating shaft 5-2 form a circular positioning hole of the worm 2. The split structure of the connecting shaft 5 is beneficial to the disassembly and maintenance of the worm while meeting the requirements of the worm in the horizontal direction positioning and rotation.

[0032] The locking mechanism 6 is used for controlling the meshing state of the worm 2 and the worm wheel 4. The locking mechanism 6 includes a connecting lug 6-1, a flap 6-2 and a positioning pin 6-3. The flap 6-2 is connected and fixed with the railway wagon body frame through the connecting lug 6-1. A long hole 6-4 is formed in the flap 6-2 for supporting the worm 2. The positioning pin 6-3 is used for fixing the position of the worm 2 in the long hole 6-4 of the flap 6-2. The positioning pin 6-3 includes a round rod 6-31 and a baffle 6-32. The round rod 6-31 is inserted into the flap 6-2 through two sleeves 6-5. The baffle 6-32 is arranged in the middle of the round rod 6-31 between the two sleeves 6-5. The baffle 6-32 can be flipped up and down with the round rod 6-31 relative to the flap 6-2.

[0033] When the baffle 6-32 is flipped up, the worm 2 can freely slide in the long hole 6-4. When the baffle 6-32 falls down, the worm 2 is limited on one side of the long hole 6-4 and cannot freely slide, so that the worm 2 and the worm wheel 4 are in the meshing state or the disengaging state. When the worm 2 and the worm wheel 4 are in the meshing state, the manual brake mechanism is in the working state. When the worm 2 and the worm wheel 4 are in the disengaging state, the manual brake mechanism is in the non-working state. Such a structure design can avoid the misoperation of the manual brake mechanism.

[0034] When the manual brake mechanism is in the working state, the hand wheel 1 is rotated clockwise, the worm 2 is rotated to drive the worm wheel 4 to rotate, and the worm wheel 4 causes the connected pull rod 7 to generate and maintain the braking force of the brake mechanism 15. When the hand wheel 1 is rotated counterclockwise, the worm 2 is rotated to drive the worm wheel 4 to release the braking force of the brake mechanism 15, so that the vehicle is relieved.

Claims

1. A railway car hand brake mechanism characterized by: The hand wheel is connected with the worm, the worm is supported and engaged with the worm wheel through the clamping plate, the worm wheel is connected with the draw bar of the railway freight car brake, the worm wheel rotates to form the brake draw force of the railway freight car under the driving of the worm, the connecting shaft is arranged between the worm and the clamping plate, the worm can rotate in the horizontal direction around the connecting shaft, the locking mechanism is arranged on the worm, and the locking mechanism controls the engagement state of the worm and the worm wheel.

2. A railway wagon hand brake mechanism according to claim 1 wherein: The clamping plate is formed by pressing a plate material, and includes an upper clamping plate and a lower clamping plate.

3. A railway wagon hand brake mechanism according to claim 2 wherein: The screw post is used for connecting the manual brake mechanism with the railway freight car body.

4. A railway wagon hand brake mechanism according to claim 2 wherein: The first screw post assembly is arranged at the rotation center of the worm wheel and is used as the rotating shaft of the worm wheel, the second screw post assembly is arranged at one side of the connecting shaft, and the third screw post assembly is arranged at the end of the worm.

5. A railway car manual brake mechanism according to claim 1 wherein: The connecting shaft is composed of two semicircular rotating shafts, half-circle grooves are respectively machined in the two semicircular rotating shafts, the connecting shaft is inserted into the upper clamping plate and the lower clamping plate at both ends, and the two half-circle grooves in the middle form a circular positioning hole of the worm.

6. A railway car manual brake mechanism according to claim 1 wherein: The locking mechanism includes a connecting lug, a flap and a positioning pin, the flap is connected and fixed with the chassis of the railway freight car body through the connecting lug, a long hole is arranged on the flap and is used for moving and supporting the worm, and the positioning pin is used for fixing the position of the worm in the long hole of the flap.

7. A railway wagon hand brake mechanism according to claim 6 wherein: The positioning pin includes a round rod and a stop edge, the round rod is inserted and placed through a sleeve ring on the flap, the stop edge is arranged at the middle part of the round rod, and the stop edge can slide back and forth relative to the long hole of the flap along with the round rod.

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