Brake shoe support, brake beam and bogie

Abstract

The present invention provides a brake shoe support, a brake beam and a bogie, wherein a slider portion is provided on the outside of the brake shoe support, and a clamping groove is provided on the front and rear sides of the slider portion, and a pulley mechanism is installed in the two clamping grooves, and the pulley mechanism includes a pulley, and the pulley is at least partially protruded from the clamping groove. With the above structure, the slider portion of the brake shoe support can be clamped in the slide groove of the bogie side frame. When the brake shoe support does not contact the wheel for braking, it mainly bears its own gravity. The brake shoe support contacts the slide groove through the pulley protruding from the clamping groove, and the sliding friction is converted into rolling friction, thereby reducing the friction resistance between the brake shoe support and the bogie; when the brake shoe support contacts the wheel for braking, the brake shoe support is subjected to pressure from the direction of the wheel, resulting in a change in the angle of the brake shoe support. At this time, the brake shoe support contacts the slide groove through the slider portion, and the slider portion bears the main braking tangential force, thereby preventing the pulley mechanism from being damaged due to excessive pressure.

Description

Technical Field

[0001] The invention relates to the technical field of railway vehicles, and in particular to a brake shoe support, a brake beam and a bogie. Background Art

[0002] The brake beam is an important part of the railway vehicle braking system. Its main function is to transmit the braking force to the wheels through the brake beam when the vehicle is braked, so that the vehicle stops moving.

[0003] When the existing brake beam releases the brake device, the slider arranged on the brake shoe support will slide and rub against the slide groove, generating friction resistance to the brake beam, resulting in large resistance to release of the brake beam, inadequate release, and even release jamming, which affects the release performance of the brake device.

[0004] Therefore, how to provide a brake beam with less friction resistance is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0005] The object of the present invention is to provide a brake beam with low friction resistance.

[0006] In order to solve the above technical problems, the present invention provides a brake shoe support, wherein a slider portion is arranged on the outer side of the brake shoe support, and slots are arranged on the front and rear sides of the slider portion, and pulley mechanisms are installed in the two slots. The pulley mechanism includes a pulley, and the pulley is at least partially protruded from the slot.

[0007] With the above structure, the slider portion of the brake block support can be clamped in the slide groove of the bogie side frame. When the brake block support does not contact the wheel for braking, it mainly bears its own gravity. The brake block support contacts the slide groove through the pulley protruding from the clamping groove, converts sliding friction into rolling friction, and reduces the friction resistance between the brake block support and the bogie. When the brake block support contacts the wheel for braking, the brake block support is subjected to pressure in the direction of the wheel, causing the angle of the brake block support to change. At this time, the brake block support contacts the slide groove through the slider portion, and the slider portion bears the main braking tangential force, preventing the pulley mechanism from being damaged due to excessive pressure.

[0008] Optionally, the pulley mechanism further includes a roller shaft, the axis of the pulley is provided with a through hole, the side wall of the slot is provided with a roller shaft hole, and the roller shaft can be inserted into the roller shaft hole and the through hole to fix the pulley in the slot.

[0009] Optionally, the pulley mechanism further includes a retraction portion, and a retraction track is provided on a side wall of the slot. The pulley can be installed on the retraction portion, and the portion protruding outside the slot can be retracted into the slot through the retraction track.

[0010] Optionally, the retraction part includes a partition, a sliding shaft and a fixed shaft, the axis of the pulley is provided with a through hole, the partition is provided with a sliding shaft hole and a fixed shaft hole, the fixed shaft can pass through the through hole and the fixed shaft hole to fix the pulley to the partition, the sliding shaft can pass through the sliding shaft hole and be inserted into the retraction track to slidably connect the partition with the slot.

[0011] Optionally, the retracting portion further includes an elastic member, which is disposed between the bottom of the slot and the partition plate to provide a restoring force for the pulley to partially protrude from the slot.

[0012] Optionally, the slider portion includes a slider and a slider sleeve, the slots are arranged at front and rear sides of the slider, the slider sleeve sleeves the slider, and the front and rear diagonal positions of the slider sleeve are hollowed out to expose at least part of the pulley.

[0013] Optionally, the slider sleeve includes an upper surface layer, a lower surface layer and a connecting section, the upper surface layer and the lower surface layer can respectively wrap the upper surface and the lower surface of the slider, and the connecting section fixedly connects the upper surface layer and the lower surface layer.

[0014] Optionally, the upper surface layer and the lower surface layer are both provided with corresponding positioning holes, the slider is correspondingly provided with a mounting hole, and the slider sleeve can be fixedly connected to the slider by rivets penetrating the positioning holes and the mounting holes.

[0015] The present invention also provides a brake beam, comprising a frame, a support and a clip, wherein the frame is an isosceles triangle structure, the support and the clip are fixedly connected and supported between the top corner and the bottom edge of the frame, and brake shoe supports are provided at both ends of the frame, and the brake shoe supports are the brake shoe supports described above.

[0016] The present invention also provides a bogie, comprising a brake beam, which is the brake beam described above; and a slide groove, wherein when the brake beam is not in contact with the wheel for braking, the brake shoe holder contacts the groove wall of the slide groove through the pulley; when the brake beam is in contact with the wheel for braking, the brake shoe holder contacts the groove wall of the slide groove through the slider. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a first implementation mode of a brake shoe support provided in an embodiment of the present invention;

[0018] Figure 2 yes Figure 1 Exploded diagram of

[0019] Figure 3 yes Figure 1 The structural diagram of the middle slider;

[0020] Figure 4 yes Figure 2 A schematic structural diagram of a first embodiment of the middle pulley;

[0021] Figure 5 yes Figure 2 A schematic structural diagram of a second embodiment of the middle pulley;

[0022] Figure 6 yes Figure 2 A schematic structural diagram of a first embodiment of a middle slider sleeve;

[0023] Figure 7 yes Figure 2 A schematic structural diagram of a second embodiment of the middle slider sleeve;

[0024] Figure 8 yes Figure 1 Schematic diagram of the force when the middle brake shoe is not in contact with the wheel during braking;

[0025] Fig. 9 yes Figure 1 The force structure diagram of the middle brake shoe when it contacts the wheel for braking;

[0026] Fig.10 is a structural schematic diagram of a second implementation manner of a brake shoe support provided in an embodiment of the present invention;

[0027] Fig.11 yes Fig.10 Exploded diagram of

[0028] Fig.12 yes Fig.10 The structural diagram of the middle slider;

[0029] Fig.13 yes Fig.10 A schematic diagram of the structure of the middle slider viewed from above;

[0030] Fig.14 yes Fig.11 Schematic diagram of the structure of the middle partition;

[0031] Fig.15 yes Fig.11 Schematic diagram of the structure of the middle sliding shaft;

[0032] Fig.16 yes Fig.10 Schematic diagram of the force when the middle brake shoe is not in contact with the wheel during braking;

[0033] Fig.17 yes Fig.10 Schematic diagram of the forces acting on the middle brake shoe when it contacts the wheel for braking;

[0034] Fig.18 is a schematic structural diagram of a brake beam provided by an embodiment of the present invention;

[0035] Fig.19 It is a schematic structural diagram of a bogie provided in an embodiment of the present invention.

[0036] Figure 1-19 The reference numerals in the figures are described as follows:

[0037] 1 frame, 2 brake shoe support, 21 slider, 211 slot, 212 roller shaft hole, 213 return track,

[0038] 214 limiting part, 215 mounting hole, 216 slider, 22 pulley mechanism, 221 pulley, 222 roller shaft,

[0039] 223 through hole, 23 return portion, 231 partition, 2311 sliding shaft hole, 2312 fixed shaft hole, 232 sliding shaft, 233 elastic member, 234 fixed shaft, 24 slider sleeve, 241 upper surface layer, 242 lower surface layer, 243 connecting end, 244 positioning hole, 25 rivet, 3 pillars, 4 clips. DETAILED DESCRIPTION

[0040] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0041] Please refer to Figure 1-9 , Figure 1 It is a structural schematic diagram of a first implementation mode of a brake shoe support provided in an embodiment of the present invention; Figure 2 yes Figure 1 Exploded diagram of Figure 3 yes Figure 1 The structural diagram of the middle slider;

[0042] Figure 4 yes Figure 2 A schematic structural diagram of a first embodiment of the middle pulley; Figure 5 yes Figure 2 A schematic structural diagram of a second embodiment of the middle pulley; Figure 6 yes Figure 2 A schematic structural diagram of a first embodiment of a middle slider sleeve; Figure 7 yes Figure 2 A schematic structural diagram of a second embodiment of the middle slider sleeve; Figure 8 yes Figure 1 Schematic diagram of the force when the middle brake shoe is not in contact with the wheel during braking; Fig. 9 yes Figure 1 The force structure diagram of the middle brake shoe when it contacts the wheel for braking.

[0043] An embodiment of the present invention provides a brake shoe support, wherein a slider portion 21 is disposed on the outer side of the brake shoe support 2, and slots 211 are disposed on the front and rear sides of the slider portion 21, and pulley mechanisms 22 are installed in the two slots 211. The pulley mechanism 22 includes a pulley 221, and the pulley 221 is at least partially protruded from the slot 211.

[0044] It should be noted that in the prior art, the slider portion 21 of the brake shoe support 2 is clamped in the slide groove of the bogie side frame. When the brake shoe support 2 is not in contact with the wheel for braking, it mainly bears its own gravity. At this time, due to the structure of the brake shoe support 2, its center of gravity is biased to the side close to the wheel, causing the brake shoe support 2 to deflect clockwise, driving the slider portion 21 to deflect clockwise as well, so that the upper left end and the lower right end of the slider portion 21 abut against the slide groove of the bogie side frame. When the brake shoe support 2 moves along the slide groove, sliding friction will be generated, increasing the resistance between the brake shoe support and the bogie;

[0045] When the brake shoe support 2 contacts the wheel for braking, the brake shoe support 2 mainly bears the braking force from the wheel direction, causing the brake shoe support 2 to deflect counterclockwise, driving the slider part 21 to deflect counterclockwise as well. At this time, the lower surface of the slider part 21 abuts against the slide groove and bears the main braking pressure.

[0046] And adopt the structure of this embodiment, such as Figure 1 As shown, the front and rear sides of the slider 21 are provided with a slot 211. The front and rear sides refer to the position where the slider 21 contacts the bogie side frame slot along the length direction of the rail vehicle when the brake shoe holder 2 is not in contact with the wheel for braking, that is, Figure 1 At the upper left end and the lower right end of the middle slider portion 21 , two slots 211 are both provided with pulley mechanisms 22 , and the pulleys 221 at least partially protrude from the slots 211 .

[0047] When the brake shoe support 2 is not in contact with the wheel for braking, Figure 8 As shown, the protruding pulley 221 can convert the sliding friction between the brake shoe support 2 and the bogie side frame slide groove into rolling friction, thereby reducing the friction resistance between the brake shoe support 2 and the bogie. Figure 8 The position indicated by the middle arrow is the main force position of the slider 21; when the brake shoe support 2 contacts the wheel for braking, Fig. 9 As shown, the angle of the slider 21 is changed, so that the lower surface of the slider 21, except for the pulley 221, contacts the slide groove and bears the main pressure, that is, Fig. 9 The position indicated by the middle arrow prevents the pulley mechanism 22 from being damaged by the braking pressure.

[0048] Among them, the pulley 221 is at least partially protruding from the slot 211, which means that when the brake shoe support 2 is not in contact with the wheel for braking, the pulley 221 can abut against the bogie side frame slot before other positions of the slider portion 21, so as to convert the sliding friction between the brake shoe support 2 and the bogie side frame slot into rolling friction. The present invention does not limit the specific setting method of the pulley 221, which specific part of the pulley 221 protrudes from the slot 211, and the size of the protruding part, as long as the pulley 221 can achieve the above-mentioned technical effects.

[0049] Specifically, in the first implementation of this embodiment, the pulley mechanism 22 also includes a roller 222, a through hole 223 is provided at the axis of the pulley 221, and a roller hole 212 is provided on the side wall of the slot 211. The roller 222 can pass through the roller hole 212 and the through hole 223 to fix the pulley 221 in the slot 211.

[0050] Please refer to Figure 2 and Figure 3 The pulley 221 is fixed in the slot 211 by the roller 222. The slot 211 can limit the pulley 221 laterally. The transverse direction refers to the length direction of the brake beam frame 1, which is also the width direction of the rail vehicle, to prevent the brake shoe support 2 from causing the pulley 221 to move laterally or be lost during braking and braking relief. The roller 222 can limit the pulley 221 vertically, that is, perpendicular to the axial direction of the frame 1, so that the pulley 221 can withstand the pressure during rolling friction.

[0051] Please refer to Figure 4 and Figure 5 The shape of the pulley 221 may be Figure 4 The column in can also be Figure 5 The spherical shape in the figure may also be other shapes except cylindrical and spherical, and the present invention is not limited to this, as long as the pulley 221 can convert the sliding friction between the brake shoe support 2 and the bogie side frame slide groove into rolling friction.

[0052] According to the size of the pulley 221 and the slot 211 , one or more pulleys 221 may be arranged on the same roller 222 to ensure that each pulley 221 does not move in the lateral direction and to prevent the pulley 221 from being lost.

[0053] In this embodiment, the pulley 221 is preferably made of non-metallic material, which should have sufficient strength and wear resistance, and a low friction coefficient, so that the pulley 221 is less likely to be damaged when rolling relative to the slide groove, thereby increasing its service life and further reducing rolling friction.

[0054] The roller shaft 222 can be made of metal, and its length should be slightly smaller than the two roller shaft holes 212 of the slot 211 and the distance therebetween, so that the roller shaft 222 can be fully inserted into the roller shaft hole 212 without partially leaking out of the outside of the slider portion 21 .

[0055] In this embodiment, the slider portion 21 includes a slider 216 and a slider sleeve 24 . The slots 211 are arranged at the front and rear sides of the slider 216 . The slider sleeve 24 sleeves the slider 216 . The front and rear diagonal positions of the slider sleeve 24 are hollowed out to expose at least part of the pulley 221 .

[0056] The slider cover 24 can cover the upper and lower surfaces of the slider 216 to prevent the slider 216 from being worn. The front and rear sides are the locations where the pulley mechanism 22 is set. The front and rear sides are the upper left end and the lower right end of the slider 216. The hollow settings on the front and rear sides can prevent them from interfering with the pulley mechanism 22 and interfering with the normal movement and function of the pulley mechanism 22.

[0057] In this embodiment, the slider 216 and the brake shoe support 2 are integrally cast, so that the slider 216 can withstand greater pressure to ensure that the slider portion 21 will not crack or break when the brake shoe support 2 contacts the wheel for braking, thereby improving the reliability and safety of the brake shoe support 2.

[0058] Furthermore, the slider sleeve 24 includes an upper surface layer 241 , a lower surface layer 242 and a connecting section 243 . The upper surface layer 241 and the lower surface layer 242 can respectively wrap the upper surface and the lower surface of the slider 216 . The connecting section 243 fixedly connects the upper surface layer 241 and the lower surface layer 242 .

[0059] like Figure 6 and Figure 7 As shown, the upper surface layer 241 can cover the upper surface of the slider 216, and the lower surface layer 242 can cover the lower surface of the slider 216. The connecting section 243 is used to limit the upper surface layer 241 and the lower surface layer 242 to the upper and lower ends of the slider 216 so that the two will not separate from the slider 216 when the slider 216 rubs against the slide groove.

[0060] The connecting section 243 can be arranged on either side of the upper surface layer 241 or the lower surface layer 242. Figure 6 As shown, Figure 6 The middle connecting section 243 is disposed on the right side of the upper surface layer 241 and the lower surface layer 242; the connecting section 243 can also be disposed at any position of the front end of the upper surface layer 241 and the lower surface layer 242, such as Figure 7 As shown, Figure 7The middle connecting section 243 is arranged at the front end of the upper surface layer 241 and the lower surface layer 242; of course, the connecting section 243 can also be arranged at other positions besides the above, and the present invention is not limited to this, as long as it can connect the upper surface layer 241 and the lower surface layer 242 as a whole and does not hinder the normal movement and function of the pulley structure 22.

[0061] In this embodiment, the upper surface layer 241 and the lower surface layer 242 are both provided with corresponding positioning holes 244 , and the slider 216 is correspondingly provided with a mounting hole 215 . The slider sleeve 24 can be fixedly connected to the slider 216 by rivets 25 penetrating the positioning holes 244 and the mounting holes 215 .

[0062] Please continue to refer to Figure 2 , Figure 6 and Figure 7 Positioning holes 244 are provided at the relative positions of the upper surface layer 241 and the lower surface layer 242, and the slider 216 is also provided with a mounting hole 215 at the corresponding position. The axial positions and sizes of the above three holes are the same. The size of the rivet 25 matches the sizes of the three holes and can pass through the three holes to fix the slider sleeve 24 to the slider 216. This connection method is convenient for disassembly and replacement of the slider sleeve 24. When the slider sleeve 24 is severely worn, the slider sleeve 24 can be directly replaced after the rivet 25 is removed, which is simple and convenient.

[0063] It is understandable that the slider sleeve 24 and the slider 216 may also be fixed in other ways than those described above, and the present invention does not limit this, as long as the slider sleeve 24 can cover the upper and lower surfaces of the slider 216 and ensure that it cannot detach from the slider 216.

[0064] Please refer to Figure 10-17 , Fig.10 is a structural schematic diagram of a second implementation manner of a brake shoe support provided in an embodiment of the present invention; Fig.11 yes Fig.10 Exploded diagram of Fig.12 yes Fig.10 The structural diagram of the middle slider; Fig.13 yes Fig.10 A schematic diagram of the structure of the middle slider viewed from above; Fig.14 yes Fig.11 Schematic diagram of the structure of the middle partition; Fig.15 yes Fig.11 Schematic diagram of the structure of the middle sliding shaft; Fig.16 yes Fig.10 Schematic diagram of the force when the middle brake shoe is not in contact with the wheel during braking; Fig.17 yes Fig.10 Schematic diagram of the forces acting on the center brake shoe when it contacts the wheel for braking.

[0065] In the second implementation of this embodiment, the pulley mechanism 22 also includes a retraction portion 23, and a retraction track 213 is provided on the side wall of the slot 211. The pulley 221 can be installed on the retraction portion 23, and the part protruding outside the slot 211 can be retracted into the interior of the slot 211 through the retraction track 213.

[0066] Specific as Fig.10 As shown, on the front and rear sides of the slider 21, the upper left end is provided with a pulley mechanism 22 which is the same as that of the first embodiment, and the lower right end is provided with a pulley mechanism 22 including a retracting portion 23. When the brake shoe 2 is not in contact with the wheel for braking, as shown in FIG. Fig.16 As shown, the pulley mechanisms 22 on the front and rear sides can convert the sliding friction between the brake shoe support 2 and the bogie side frame slide groove into rolling friction, thereby reducing the friction resistance between the brake shoe support 2 and the bogie. Fig.16 The position indicated by the middle arrow is the main force-bearing position of the slider 21, and at this time, the two pulleys 221 bear the main pressure;

[0067] When the brake shoe 2 contacts the wheel for braking, Fig.17 As shown, the angle of the slider 21 changes. At this time, in the pulley mechanism 22 at the lower right end, the pulley 221 can slide into the slot 211 along the return track 213 through the return portion 23 until the lower surface of the slider sleeve 24 on which the slider 216 is mounted abuts against the bogie side frame slot, that is, Fig.17 The position indicated by the middle arrow enables the slider sleeve 24 to bear the main braking pressure, and the pulley mechanism 22 will not be damaged due to the braking pressure.

[0068] Of course, the two pulley mechanisms 22 in the first embodiment can also be replaced by the pulley mechanism 22 with the retraction portion 23 and the retraction track 213 in the second embodiment. The present invention is not limited to this, as long as the pulley mechanism 22 can achieve the above functions and effects.

[0069] Specifically, in this embodiment, the retraction portion 23 includes a partition 231, a sliding shaft 232 and a fixed shaft 234. The axis of the pulley 221 is provided with a through hole 223. The partition 231 is provided with a sliding shaft hole 2311 and a fixed shaft hole 2312. The fixed shaft 234 can pass through the through hole 223 and the fixed shaft hole 2312 to fix the pulley 221 to the partition 231. The sliding shaft 232 can pass through the sliding shaft hole 2311 and be inserted into the retraction track 213 to slidingly connect the partition 231 with the card slot 211.

[0070] Please refer to Fig.11The fixed shaft 234 can pass through the fixed shaft hole 2312 and the through hole 233 to fix the pulley 221 to the partition 231, so as to limit the pulley 221 in the lateral direction and prevent the pulley 221 from lateral movement or loss when the slider 21 moves; the sliding shaft 232 can pass through the sliding shaft hole 2311 and the return track 213 to slide the partition 231 to the slot 211, and limit the partition 231 and the pulley 221 in the vertical direction, so that the pulley 221 can withstand the pressure between the slider 21 and the slot during rolling friction, wherein the definitions of lateral and vertical are the same as those in the above text.

[0071] The pulley 221 installed in the partition 231 should match the size of the partition 231, and the pulley 221 itself can roll around the fixed shaft 234 without lateral movement or loss. Fig.14 As shown, it is a U-shaped structure, and corresponding sliding shaft holes 2311 and fixed shaft holes 2312 are respectively provided on the left and right side walls, so that the sliding shaft 232 and the fixed shaft 234 can pass through and be fixed.

[0072] The structure of the sliding shaft 232 is as follows: Fig.15 As shown, it can be made of metal, with a length slightly smaller than the return track 213 and the length between the two, so that the sliding shaft 232 can be fully inserted into the return track 213 and will not leak out of the outside of the slider 216; since the sliding shaft 232 needs to slide in the return track 213, in order to ensure that it does not rotate or roll, the sliding shaft 232 should be a non-circular shaft, that is, the position with the largest diameter should be larger than the width of the return track 213. Of course, the structure of the sliding shaft hole 2311 should also correspond to the cross-section of the sliding shaft 232.

[0073] The pulley 221 in this embodiment is the same as that in the first embodiment, and its structure can be cylindrical or spherical. Figure 4 and Figure 5 As shown, no further description is given here.

[0074] This embodiment also has the same slider sleeve 24 as the first embodiment, and its structure and function are the same as those of the first embodiment, so it will not be repeated here.

[0075] In this embodiment, a limiting portion 214 is disposed at the bottom of the slot 211 , and the retracting portion 23 further includes an elastic member 233 that can be installed on the limiting portion 214 . The elastic member 233 provides a restoring force for the partition plate 231 .

[0076] Please refer to Fig.11 and Fig.12In this embodiment, the elastic member 233 is a cylindrical spring, and the limiting portion 214 is a spring seat corresponding to the cylindrical spring, which is arranged at the bottom of the slot 211. The spring seat can position the cylindrical spring and cooperate with the partition 231 to limit the cylindrical spring between the two to provide a reset force for the partition 231.

[0077] When the brake shoe support 2 does not brake the wheel, since the partition 231 and the pulley 221 are subjected to relatively low pressure, the elastic member 233 can exert elastic force on the partition 231 and the pulley 221 to maintain a balance with the pressure, so that the partition 231 and the pulley 221 remain protruding from the slot 211 to contact the slide slot.

[0078] When the brake shoe support 2 brakes the wheel, the brake shoe support 2 rotates clockwise, driving the slider part 21 to rotate clockwise, the abutment pressure between the slide groove and the pulley 221 increases, and the elastic force applied by the elastic member 233 to the partition plate 231 and the pulley 221 is smaller than the pressure, so the partition plate 231 and the pulley 221 can be pressed into the slot 211 until the lower surface of the slider sleeve 24 abuts against the slide groove, replacing the pulley 221 to bear the main braking pressure.

[0079] When the brake shoe support 2 no longer brakes the wheel, the brake shoe support 2 will rotate counterclockwise, driving the slider part 21 to rotate counterclockwise and return to the normal angle. The abutment pressure between the slide groove and the pulley 221 becomes smaller, and the elastic force applied by the elastic member 233 to the partition plate 231 and the pulley 221 is greater than the pressure, pushing the partition plate 231 and the pulley 221 to reset until the pressure and the elastic force are balanced.

[0080] It can be understood that the elastic member 233 can also be other elastic bodies or damping members besides the cylindrical spring, and the limiting portion 214 can also be other structures besides the protruding structure that can cooperate with the elastic member 233. The present invention does not limit this, as long as the two can cooperate to complete the above functions.

[0081] Please refer to Fig.18 , Fig.18 It is a schematic structural diagram of a brake beam provided in an embodiment of the present invention.

[0082] The present invention also provides a brake beam, comprising a frame 1, a pillar 3 and a clip 4, the frame 1 is an isosceles triangle structure, the pillar 3 and the clip 4 are fixedly connected and made between the top corner and the bottom edge of the frame 1, and brake shoe supports 2 are provided at both ends of the frame 1. The brake shoe support 2 is the brake shoe support 2 described above. Since the brake shoe support 2 already has the above technical effects, the brake beam including the brake shoe support 2 should also have the same technical effects, so it will not be repeated here.

[0083] Please refer to Fig.19 , Fig.19 It is a schematic structural diagram of a bogie provided in an embodiment of the present invention.

[0084] The present invention also provides a bogie, including a brake beam, which is the brake beam described above. Since the brake beam has the above technical effects, the bogie including the brake beam should also have the same technical effects, so it will not be repeated here.

[0085] The side frame of the bogie is provided with a slide groove. When the brake beam is not in contact with the wheel for braking, the brake shoe support 2 contacts the groove wall of the slide groove through the pulley 221; when the brake beam is in contact with the wheel for braking, the brake shoe support 2 contacts the groove wall of the slide groove through the slider part 21.

[0086] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A brake shoe support, characterized in that: A slider portion (21) is disposed on the outer side of the brake shoe support (2), and slots (211) are disposed on the front and rear sides of the slider portion (21), and pulley mechanisms (22) are installed in the two slots (211), and the pulley mechanism (22) comprises a pulley (221), and the pulley (221) is at least partially protruding from the slot (211); The slider portion (21) comprises a slider (216) and a slider sleeve (24), wherein the slider sleeve (24) sleeves the slider (216), and the slider sleeve (24) is hollowed out at diagonal positions on both sides of the slider sleeve (24) to expose at least a portion of the pulley (221); the slider sleeve (24) has a lower surface; When the brake shoe support (2) is in contact with the wheel, the slider portion (21) deflects counterclockwise, the pulley (221) located at the front side of the slider portion (21) and the pulley (221) located at the rear side are spaced apart from the bogie side frame slide groove, and the lower surface of the slider sleeve (24) is used to abut against the bogie side frame slide groove; When the brake shoe support (2) is not in contact with the wheel, the brake shoe support (2) drives the slider portion (21) to deflect clockwise, and the pulley (221) located at the front side of the slider portion (21) and the pulley (221) located at the rear side are used to abut against the bogie side frame slide groove.

2. The brake shoe support according to claim 1, characterized in that: The pulley mechanism (22) further comprises a roller shaft (222); the axis of the pulley (221) is provided with a through hole (223); the side wall of the slot (211) is provided with a roller shaft hole (212); the roller shaft (222) can be inserted into the roller shaft hole (212) and the through hole (223) to fix the pulley (221) in the slot (211).

3. The brake shoe support according to claim 2, characterized in that: The pulley mechanism (22) further comprises a retracting portion (23), a retracting track (213) is provided on a side wall of the slot (211), the pulley (221) can be mounted on the retracting portion (23), and a portion protruding outside the slot (211) can be retracted into the slot (211) through the retracting track (213).

4. The brake shoe support according to claim 3, characterized in that: The retraction portion (23) includes a partition (231), a sliding shaft (232) and a fixed shaft (234); the axis of the pulley (221) is provided with a through hole (223); the partition (231) is provided with a sliding shaft hole (2311) and a fixed shaft hole (2312); the fixed shaft (234) can pass through the through hole (223) and the fixed shaft hole (2312) to fix the pulley (221) to the partition (231); the sliding shaft (232) can pass through the sliding shaft hole (2311) and be inserted into the retraction track (213) to slidably connect the partition (231) with the card slot (211).

5. The brake shoe holder according to claim 4, characterized in that: The retracting portion (23) further comprises an elastic member (233), wherein the elastic member (233) is arranged between the bottom of the slot (211) and the partition (231) to provide a restoring force for the pulley (221) to partially protrude from the slot (211).

6. The brake shoe holder according to any one of claims 1 to 5, characterized in that: The slider sleeve (24) comprises an upper surface layer (241), a lower surface layer (242) and a connecting section (243); the upper surface layer (241) and the lower surface layer (242) can respectively wrap the upper surface and the lower surface of the slider (216); and the connecting section (243) fixedly connects the upper surface layer (241) and the lower surface layer (242).

7. The brake shoe holder according to claim 6, characterized in that: The upper surface layer (241) and the lower surface layer (242) are both provided with corresponding positioning holes (244), the slider (216) is correspondingly provided with a mounting hole (215), and the slider sleeve (24) can be fixedly connected to the slider (216) by rivets (25) penetrating the positioning holes (244) and the mounting holes (215).

8. A brake beam, comprising a frame (1), a support (3) and a clip (4), wherein the frame (1) is an isosceles triangle structure, the support (3) and the clip (4) are fixedly connected and supported between the top corner and the bottom edge of the frame (1), characterized in that: Brake shoe supports (2) are provided at both ends of the frame (1), and the brake shoe supports (2) are the brake shoe supports (2) described in any one of claims 1 to 7.

9. Bogie, characterized in that: comprising a brake beam, wherein the brake beam is the brake beam according to claim 8; It also comprises a slide groove, and when the brake beam is not in contact with the wheel for braking, the brake shoe support (2) contacts the groove wall of the slide groove through the pulley (221); when the brake beam is in contact with the wheel for braking, the brake shoe support (2) contacts the groove wall of the slide groove through the slider part (21).

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