A wide-gauge sub-frame radial bogie equipped with an integrated braking device

Abstract

The invention discloses a wide-gauge sub-frame radial bogie equipped with an integrated brake device; including: a wheelset and a bearing, a side frame component, a bolster component, a wheelset radial device, a clearance side bearing, a central suspension device and a push-type integrated brake device; the brake device is composed of a main brake beam, an auxiliary brake beam, a unit brake cylinder, a rotating lever, a push rod and a brake shoe; the main brake beam and the auxiliary brake beam are arranged in parallel below the belly of the bolster, and the ends of the main brake beam and the auxiliary brake beam are slidingly matched with the slide groove of the bogie side frame through a slider, and the two ends of the auxiliary brake beam are respectively connected to a push rod arranged in parallel with each other; the driving pistons at both ends of the unit brake cylinder are respectively hinged with a rotating lever, each rotating lever is respectively hinged with the main brake beam, and a push rod is hinged to drive each brake shoe to realize braking clutch. The invention takes into account the application conditions of wide-gauge lines with a track gauge of 1600mm and above, and adopts a push-type integrated brake device through reasonable space layout to improve the versatility of the bogie.

Description

Technical Field

[0001] The invention relates to the technical field of rail transit equipment, and in particular to a railway freight car sub-frame radial bogie suitable for wide-gauge lines with a track gauge of 1600 mm or more and equipped with a push-type integrated braking device. Background Art

[0002] The auxiliary frame type radial bogie is one of the main bogies for railway freight cars in my country. It is a technological achievement introduced by my country from Scheffel bogie technology in South Africa, absorbed and innovated. It mainly couples the movement of the front and rear wheelsets through the radial device of the wheelset formed by two auxiliary frames and two cross-arranged connecting rods, so that the bogie has a large shear stiffness and a small bending stiffness. Among them, the auxiliary frame is generally placed at both ends of the bolster, and the connecting rod passes through the middle hole of the bolster. The auxiliary frame type radial bogie has good running stability when running in a straight line; when passing through a curve, the front and rear wheelsets are in a radial position, which can greatly reduce the wheel-rail attack angle. Thereby effectively reducing the wheel-rail dynamic effect, improving the vehicle's curve passing performance, reducing wheel-rail wear and reducing power consumption.

[0003] South Africa's Scheffel bogies are mainly used on 1067mm narrow-gauge lines; my country's sub-frame radial bogies are mainly used on 1435mm standard-gauge lines. Since the 1990s, my country has also developed a series of sub-frame radial bogies with different structural types and different axle loads, and exported them in batches to Australia, Venezuela, Mongolia and other countries, with track gauges mainly 1435mm and 1520mm.

[0004] At the same time, due to its inherent structural characteristics, in order to meet the lower limit and design standard requirements of the vehicle, the sub-frame radial bogie mainly adopts the traditional lever braking type.

[0005] There is currently no precedent for the use of a sub-frame radial bogie suitable for wide-gauge lines with a track gauge of 1600mm and above and equipped with an integrated braking device. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention discloses a railway freight car sub-frame radial bogie suitable for wide-gauge lines with a track gauge of 1600 mm or more and equipped with a push-type integrated brake device. The purpose of the present invention is to provide a railway freight car sub-frame radial bogie structure suitable for wide-gauge lines with a track gauge of 1600 mm or more, equipped with a push-type integrated brake device, with a reasonable spatial structure and components having sufficient strength and rigidity.

[0007] To achieve the above object, the present invention is implemented through the following technical solutions:

[0008] A wide-gauge sub-frame radial bogie equipped with an integrated brake device, comprising: a wheelset and bearings, a side frame assembly, a bolster assembly, a rubber pile, a wheelset radial device, a clearance side bearing, and a central suspension device; characterized in that: the brake system adopts a push-type integrated brake device;

[0009] The push-type integrated brake device is composed of a main brake beam, an auxiliary brake beam, a unit brake cylinder, a rotating lever, a push rod and a brake shoe; the main brake beam and the auxiliary brake beam are arranged in parallel under the belly of the bolster, and the ends of the main brake beam and the auxiliary brake beam are slidingly matched with the slide groove of the bogie side frame through a slider; each brake shoe is arranged on the surface of the wheelset and can be braked with the end of the main brake beam or the auxiliary brake beam; the two ends of the auxiliary brake beam are respectively connected to a push rod arranged parallel to each other; the unit brake cylinder is arranged on the side of the main brake beam, and the driving pistons at both ends of the unit brake cylinder are respectively hinged to a rotating lever, and each rotating lever has a triangular structure, and the other two connecting ends of the triangle are respectively hinged to the main brake beam, and a push rod is hinged to drive each brake shoe to realize braking clutch.

[0010] The unit brake cylinder is integrated with a bidirectional brake shoe clearance adjuster and has a stroke indication function; the push rod has a length adjustable structure.

[0011] The wheelset radial device is composed of two sub-frames and two cross-arranged connecting rods connected by round pins; the round pin installation position of the wheelset radial device is located above each brake beam, and an upper bolt anti-slip device limiting structure is adopted. The tail of the round pin has no protruding structure to ensure that there is sufficient relative movement space between the sub-frame and each brake beam.

[0012] The sub-frame is composed of a load-bearing saddle and a U-shaped sub-frame riveted together by high-strength rivet assemblies to form a separate combined structure, and reinforcing ribs are arranged at the weak local structural rigidity of the U-shaped bend of the U-shaped sub-frame.

[0013] The upper bolt anti-drop device is a detachable limit rod device arranged on the top surface of the round pin, and is composed of bases located on both sides of the top surface of the round pin and a limit rod connected between the bases.

[0014] The connecting rods are arranged crosswise, and are arranged in the fish belly holes of the bolsters. Rigid bushings or elastic hinges are arranged at the ends of the connecting rods, which are embedded in the installation grooves formed by the auxiliary frames and are connected by round pins.

[0015] The bolster assembly consists of a bolster, a side bearing seat, a center plate wear plate and an inclined wear plate; three reinforcing ribs are arranged at the side bearing installation position; the longitudinal sections on both sides of the bolster fish belly are stepped structures with different section heights and smooth transitions.

[0016] The side bearing seat is connected to the bolster through high-strength folded-head bolts, and the side bearing roller body is installed inside the side bearing seat.

[0017] The beneficial effect of the present invention is that, considering the application conditions of wide-gauge lines with a track gauge of 1600 mm or more, the bogie bearing structure meets the requirements of relevant standards through a structural design method. At the same time, the arrangement of the push-type integrated brake device is realized through a reasonable spatial layout. Not only does it broaden the application range of the sub-frame radial bogie series products; it also improves the versatility of the bogie through the realization of the installation of the push-type integrated brake device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of a sub-frame type radial bogie of the present invention;

[0019] Figure 2 It is a schematic diagram of the push-type integrated brake device of the present invention;

[0020] Figure 3 It is a schematic diagram of the radial device of the wheelset of the present invention;

[0021] Figure 4 It is a schematic diagram of the composition of the bolster of the present invention;

[0022] Figure 5 yes Figure 3 The enlarged schematic diagram of the circled portion marked with mark 31.1;

[0023] Figure 6 yes Figure 3 The enlarged schematic diagram of the circled portion marked with mark 33;

[0024] Figure 7 It is a schematic diagram of the relative position of the hinged position of the connecting rod of the wheelset radial device of the present invention and the main brake beam or the auxiliary brake beam.

[0025] In the figure, 11-wheel set and bearing, 12-side frame composition, 13-rocker composition, 14-rubber pile, 15-push type integrated brake device, 16-wheel set radial device, 17-gap side bearing, 18-central suspension device; 21-main brake beam, 22-auxiliary brake beam, 23-unit brake cylinder, 24-rotating lever, 25-push rod, 26-brake shoe; 31-auxiliary frame composition, 32-connecting rod, 33-round pin, 34-upper bolt anti-slip device, 31.1-U-type auxiliary frame, 31.11-reinforcement rib, 31.2-load bearing saddle, 31.3-high-strength rivet assembly; 41-rocker, 42-side bearing seat, 43-center plate wear plate, 44-inclined wear plate, 45-high-strength folded head bolt, 46-side bearing roller body. DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with specific implementation methods. The specific implementation methods are further descriptions of the principles of the present invention and do not limit the present invention in any way. Technologies that are the same or similar to the present invention do not exceed the scope of protection of the present invention.

[0027] Combined with the attached pictures.

[0028] The wide-gauge sub-frame radial bogie equipped with an integrated brake device is a cast steel three-piece structure, including wheelsets and bearings 11, side frame components 12, bolster components 13, rubber piles 14, push-type integrated brake devices 15, wheelset radial devices 16, clearance side bearings 17 and central suspension devices 18. The bogie is suitable for wide-gauge lines with a track gauge of 1600mm and above. Its key bearing structure is reasonably arranged, has sufficient strength and rigidity, and is equipped with a push-type integrated brake device 15.

[0029] The push-type integrated brake device 15 is composed of a main brake beam 21, an auxiliary brake beam 22, a unit brake cylinder 23, a rotating lever 24, a push rod 25, a brake shoe 26 and other components. The main brake beam 21 and the auxiliary brake beam 22 are suitable for wide-gauge bogie structures and have sufficient strength and rigidity; the unit brake cylinder 23 integrates a bidirectional brake shoe clearance adjuster and has a travel indication function; the rotating lever 24 is a triangular structure and has the function of amplifying and transmitting the braking force; the push rod 25 has a length-adjustable function and transmits the braking force to the auxiliary brake beam 22 to achieve the braking effect.

[0030] The push-type integrated brake device 15 is installed in the slide groove of the bogie side frame through the slider structure at both ends of each brake beam. The push rod 25 connecting the rotating lever 24 and the auxiliary brake beam 22 is located under the bolster fish belly; the connecting rod 32 of the wheelset radial device 16 is arranged in the bolster fish belly hole. When the bogie is in use, the mechanism actions do not affect each other.

[0031] The wheelset radial device 16 is composed of two front and rear auxiliary frame components 31 and two cross-arranged connecting rods 32 connected by round pins 33. The auxiliary frame component 31 is a split assembly structure formed by riveting the load saddle 31.2 and the U-shaped auxiliary frame 31.1 by high-strength rivet assembly 31.3, which is suitable for wide-gauge bogie structures and has sufficient strength and rigidity. In order to meet the design standard rigidity requirements, the U-shaped auxiliary frame 31.1 is provided with reinforcing ribs 31.11 at the weak local structural rigidity. The connecting rods 32 are arranged crosswise, and rigid bushings or elastic hinges can be provided at their ends, which are embedded in the installation grooves located in the auxiliary frame component 31 and are pinned by round pins 33. The installation position of the round pin 33 of the wheelset radial device 16 is located above the brake beam, and the upper bolt anti-slip method is adopted. The tail of the round pin 33 has no protrusion, which ensures that there is sufficient relative movement space between the auxiliary frame component 31 and the main and auxiliary brake beams.

[0032] The bolster assembly 13 is mainly composed of components such as the bolster 41, the side bearing seat 42, the center plate wear plate 43 and the inclined wear plate 44. In order to meet the stiffness requirements of the side bearing load condition in the design standard of the bolster 41 under wide track conditions, three reinforcing ribs are arranged at the side bearing installation position. In order to cooperate with the installation of the push-type integrated brake device 15, the longitudinal cross-sections on both sides of the belly of the bolster 41 are designed to have a stepped shape with an appropriate cross-sectional height and a smooth transition, which provides sufficient space for the relative movement between the bolster 41 and the push rod 25 while ensuring strength and stiffness. The side bearing seat 42 is connected to the bolster 41 by a high-strength folded head bolt 45, and a side bearing roller body 46 is installed therein.

[0033] like Figure 1 As shown, the wide-gauge sub-frame radial bogie equipped with an integrated brake device is a three-piece cast steel structure, mainly composed of wheelsets and bearings 11, side frame components 12, bolster components 13, rubber piles 14, push-type integrated brake devices 15, wheelset radial devices 16, clearance side bearings 17, central suspension devices 18 and other components. The bogie is suitable for wide-gauge lines with a track gauge of 1600mm and above. Its key bearing structure is reasonably arranged, has sufficient strength and rigidity, and can be equipped with a push-type integrated brake device 15.

[0034] like Figure 2 As shown, the push-type integrated brake device 15 is mainly composed of a main brake beam 21, an auxiliary brake beam 22, a unit brake cylinder 23, a rotating lever 24, a push rod 25, a brake shoe 26 and other components. The main brake beam 21 and the auxiliary brake beam 22 are suitable for wide-gauge bogie structures and have sufficient strength and rigidity; the unit brake cylinder 23 integrates a bidirectional brake shoe clearance adjuster and has a stroke indication function; the rotating lever 24 is an approximately triangular structure and has the function of amplifying and transmitting the braking force; the push rod 25 has a length-adjustable function and transmits the braking force to the auxiliary brake beam 22 to achieve the braking effect.

[0035] like Figure 1 , Figure 2 As shown, the push-type integrated brake device 15 is installed in the slide groove of the bogie side frame through the slider structure at both ends of each brake beam. The push rod 25 connecting the rotating lever 24 and the auxiliary brake beam 22 is located under the bolster fish belly; the connecting rod 32 of the wheelset radial device 16 is arranged in the bolster fish belly hole. When the bogie is in use, the mechanism actions do not affect each other.

[0036] like Figure 3As shown, the wheelset radial device 16 is composed of two front and rear auxiliary frames 31 and two cross-arranged connecting rods 32 connected by round pins 33. The auxiliary frame 31 is a split assembly structure formed by riveting a load saddle 31.2 and a U-shaped auxiliary frame 31.1 by high-strength rivet assemblies 31.3, which is suitable for wide-gauge bogie structures and has sufficient strength and rigidity. In order to meet the design standard rigidity requirements, the U-shaped auxiliary frame 31.1 is provided with reinforcing ribs 31.11 at the weak local structural rigidity, such as Figure 5 The connecting rods 32 are arranged crosswise, and rigid bushings or elastic hinges can be provided at their ends, embedded in the mounting grooves of the secondary frame components 31 and pinned by round pins 33.

[0037] like Figure 6 , Figure 7 As shown, the round pin 33 of the wheelset radial device 16 is installed above the brake beam, and the upper bolt anti-slip device 34 is used as a limiting method. The tail of the round pin 33 has no protrusion, which ensures that there is sufficient relative movement space between the secondary frame component 31 and the main brake beam 21 or the secondary brake beam 22. The upper bolt anti-slip device 34 is a detachable limiting rod device arranged on the top surface of the round pin 33, and is composed of bases located on both sides of the top surface of the round pin 33 and limiting rods connected between the bases.

[0038] like Figure 4 As shown, the bolster assembly 13 is mainly composed of components such as a bolster 41, a side bearing seat 42, a center plate wear plate 43 and an inclined wear plate 44. In order to meet the stiffness requirements of the side bearing load condition in the bolster design standard under wide track conditions, the bolster 41 is arranged with three reinforcing ribs at the side bearing installation position. In order to cooperate with the installation of the push-type integrated brake device 15, the longitudinal cross-sections on both sides of the belly of the bolster 41 are designed to have a stepped shape with an appropriate cross-sectional height and a smooth transition, which provides sufficient space for the relative movement between the bolster 41 and the push rod 25 while ensuring strength and stiffness. The side bearing seat 42 is connected to the bolster by a high-strength folded head bolt 45, and a side bearing roller body 46 is installed therein.

Claims

1. A wide-gauge sub-frame radial bogie equipped with an integrated braking device, comprising: Wheelset and bearing, side frame assembly, bolster assembly, rubber pile, wheelset radial device, clearance side bearing, central suspension device; characterized in that: the braking system adopts a push-type integrated braking device; The push-type integrated brake device is composed of a main brake beam, an auxiliary brake beam, a unit brake cylinder, a rotating lever, a push rod and a brake shoe; the main brake beam and the auxiliary brake beam are arranged in parallel below the belly of the bolster, and the ends of the main brake beam and the auxiliary brake beam are slidingly matched with the slide groove of the bogie side frame through a slider; each brake shoe is arranged on the surface of the wheelset and can be braked and matched with the end of the main brake beam or the auxiliary brake beam; the two ends of the auxiliary brake beam are respectively connected to a push rod arranged parallel to each other; the unit brake cylinder is arranged on the side of the main brake beam, and the driving pistons at both ends of the unit brake cylinder are respectively hinged to a rotating lever, and each rotating lever has a triangular structure, and the other two connecting ends of the triangle are respectively hinged to the main brake beam, and a push rod is hinged to drive each brake shoe to realize braking clutch; The bolster assembly consists of a bolster, a side bearing seat, a center plate wear plate and an inclined wear plate; three reinforcing ribs are arranged at the side bearing installation position; the longitudinal sections on both sides of the bolster fish belly are stepped structures with different cross-sectional heights and smooth transitions, providing sufficient space for the relative movement between the bolster and the push rod.

2. The wide-gauge sub-frame type radial bogie equipped with an integrated braking device according to claim 1, characterized in that: The unit brake cylinder is integrated with a bidirectional brake shoe clearance adjuster and has a stroke indication function; the push rod has a length adjustable structure.

3. The wide-gauge sub-frame type radial bogie equipped with an integrated braking device according to claim 1, characterized in that: The wheelset radial device is composed of two sub-frames and two cross-arranged connecting rods connected by round pins; the round pin installation position of the wheelset radial device is located above each brake beam, and an upper bolt anti-slip device limiting structure is adopted. The tail of the round pin has no protruding structure to ensure that there is sufficient relative movement space between the sub-frame and each brake beam.

4. The wide-gauge sub-frame type radial bogie equipped with an integrated braking device according to claim 3, characterized in that: The sub-frame is composed of a load-bearing saddle and a U-shaped sub-frame riveted together by high-strength rivet assemblies to form a separate combined structure, and reinforcing ribs are arranged at the weak local structural rigidity of the U-shaped bend of the U-shaped sub-frame.

5. The wide-gauge sub-frame type radial bogie equipped with an integrated braking device according to claim 3, characterized in that: The upper bolt anti-drop device is a detachable limit rod device arranged on the top surface of the round pin, and is composed of bases located on both sides of the top surface of the round pin and a limit rod connected between the bases.

6. The wide-gauge sub-frame type radial bogie equipped with an integrated braking device according to claim 3, characterized in that: The connecting rods are arranged crosswise, and are arranged in the fish belly holes of the bolsters. Rigid bushings or elastic hinges are arranged at the ends of the connecting rods, which are embedded in the installation grooves formed by the auxiliary frames and are connected by round pins.

7. The wide-gauge sub-frame type radial bogie equipped with an integrated braking device according to claim 1, characterized in that: The side bearing seat is connected to the bolster through high-strength folded-head bolts, and the side bearing roller body is installed inside the side bearing seat.

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