CN110834649B - Braking device for bogie of narrow-gauge boom car and bogie - Google Patents
Braking device for bogie of narrow-gauge boom car and bogie Download PDFInfo
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- CN110834649B CN110834649B CN201911224390.XA CN201911224390A CN110834649B CN 110834649 B CN110834649 B CN 110834649B CN 201911224390 A CN201911224390 A CN 201911224390A CN 110834649 B CN110834649 B CN 110834649B
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- 230000005540 biological transmission Effects 0.000 claims description 38
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 abstract description 3
- 239000000725 suspension Substances 0.000 description 7
- 241001417527 Pempheridae Species 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241001669679 Eleotris Species 0.000 description 1
- 244000035744 Hura crepitans Species 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Abstract
The invention discloses a braking device for a narrow-gauge boom truck and the truck, wherein the truck comprises a framework, a first wheel pair and a second wheel pair which are arranged on the framework, the braking device comprises a pair of braking components, and the pair of braking components are respectively arranged on two sides of the framework and are positioned between the first wheel pair and the second wheel pair; each brake assembly comprises a brake cylinder, a lever assembly, a first brake shoe and a second brake shoe, and the brake cylinder can respectively press the first brake shoe and the second brake shoe on the wheel treads of the same sides of the first wheel pair and the second wheel pair through the lever assembly so as to realize braking. The device has the advantages of compact structure, light weight, low manufacturing cost and convenient use and maintenance.
Description
Technical Field
The invention belongs to the technical field of railway vehicles, and particularly relates to a braking device for a bogie of a narrow-gauge boom car and the bogie.
Background
In the prior art, a power bogie for a narrow gauge and meter gauge engineering truck is generally in hydrostatic drive, electric drive or mechanical drive, a brake system is mostly a brake disc or a unit brake, the unit brake is a formed product, the appearance size of the unit brake is fixed, the cost is high, the structure is complex, the maintenance difficulty is high, and meanwhile, the weight and the volume of the bogie are larger.
It is therefore desirable to develop a brake device for a narrow gauge boom truck and a truck that is compact, lightweight, inexpensive to manufacture, and easy to use and maintain.
Disclosure of Invention
The invention aims to provide a brake device for a narrow-gauge boom truck, which has compact structure, light weight, low manufacturing cost and convenient use and maintenance, and the truck,
In order to achieve the above object, the present invention provides a brake device for a narrow gauge boom truck, the truck including a frame and a first wheel set and a second wheel set mounted on the frame, the brake device including a pair of brake assemblies respectively disposed on both sides of the frame and located between the first wheel set and the second wheel set;
Each brake assembly comprises a brake cylinder, a lever assembly, a first brake shoe and a second brake shoe, and the brake cylinder can press the first brake shoe and the second brake shoe on the wheel treads of the first wheel pair and the second wheel pair on the same side of the first brake shoe and the second brake shoe respectively through the lever assembly so as to realize braking.
Preferably, the lever assembly comprises a transmission lever, a first brake lever, a second brake lever and a longitudinal pull rod;
the transmission lever is hinged to the framework along the horizontal direction through a first pin shaft, a piston rod of the brake cylinder is connected to one end of the transmission lever, and the piston rod of the brake cylinder can extend from the brake cylinder to the direction of the second wheel pair;
The first brake lever is hinged to the framework along the vertical direction through a second pin shaft and is positioned at the wheel of the first wheel set, the top end of the first brake lever is connected to the other end of the transmission lever, the first brake shoe is installed on the first brake lever and is positioned above the second pin shaft, and the first brake shoe faces the wheel tread of the first wheel set;
the second brake lever is hinged to the framework along the vertical direction through a third shaft pin and is positioned at the wheel of the second wheel set, the second brake shoe is mounted on the second brake lever and is positioned below the third shaft pin, and the second brake shoe faces the wheel tread of the second wheel set;
The longitudinal pull rod is connected between the bottom end of the first brake lever and the bottom end of the second brake lever;
When the piston rod of the brake cylinder extends towards the direction of the second wheel set, one end of the transmission lever moves towards the direction of the second wheel set, the other end of the transmission lever moves towards the direction of the first wheel set, and then the top end of the first brake lever is driven to move towards the direction of the first wheel set, so that the first brake shoe presses the wheel tread of the first wheel set, meanwhile, the bottom end of the first brake lever moves towards the direction of the second wheel set, and the bottom end of the second brake lever is pushed to move towards the direction of the second wheel set by the longitudinal pull rod, so that the second brake shoe presses the wheel tread of the second wheel set.
Preferably, the piston rod is hinged to the one end of the transmission lever at a first hinge point, the first brake lever is hinged to the other end of the transmission lever at a second hinge point, and the distance between the first hinge point and the first pin is greater than the distance between the second hinge point and the first pin.
Preferably, the other end of the first brake lever is hinged with one end of the longitudinal pull rod at a third hinge point, and the distance between the second hinge point and the second pin shaft is larger than the distance between the third hinge point and the second pin shaft.
Preferably, the brake device further comprises a connecting rod, one end of the connecting rod is hinged to the framework, and the first brake lever is hinged to the other end of the connecting rod through the second pin shaft.
Preferably, balance springs are connected between the first brake shoe and the first brake rod and between the second brake shoe and the second brake rod.
Preferably, a transverse pull rod is connected between the two first brake shoes and between the two second brake shoes.
The present invention also provides a bogie comprising:
A frame;
A first wheel set and a second wheel set mounted on the framework;
a braking device according to any one of claims 1 to 7.
Preferably, the framework comprises a central beam, two side beams and two I-shaped end beams, wherein the two side beams are parallel to each other, two ends of the central beam are respectively fixed at the middle parts of the two side beams, the two I-shaped end beams are respectively arranged at the front end and the rear end of the central beam, and each I-shaped end beam is respectively fixedly connected with the end parts of the two side beams.
Preferably, axle boxes are respectively arranged on axles of the first wheel pair and the second wheel pair, hanging plates are arranged on the axle boxes, and a wheel-falling-free rotary repair interface is designed at the lower part of each axle box.
The invention has the beneficial effects that:
1. The brake device adopts lever-type foundation brake, has low manufacturing cost, simplifies the whole vehicle brake structure under the condition of meeting the brake distance, can meet the brake requirement, has compact structure, light weight and low manufacturing cost, can save the cost by nearly 85 percent, and is convenient to use and maintain.
2. The structure of the framework is beneficial to optimizing the structural layout of the bogie.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The foregoing and other objects, features and advantages of the invention will be apparent from the following more particular descriptions of exemplary embodiments of the invention as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the invention.
Fig. 1 shows a side view of a bogie according to an embodiment of the present invention.
Fig. 2 shows a top view of a bogie according to an embodiment of the present invention.
Fig. 3 shows a schematic structural view of a brake device according to an embodiment of the present invention.
Description of the reference numerals
1. A frame; 2. a first wheel set; 3. a second wheel set; 4. a brake cylinder; 5. a transmission lever; 6. a first brake lever; 7. a connecting rod; 8. a first brake shoe; 9. a longitudinal tie rod; 10. a second brake lever; 11. a second brake shoe; 12. a transverse pull rod; 13. a side beam; 14. a central beam; 15. i-shaped end beams; 16. and a balance spring.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the preferred embodiments of the present invention are described below, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
The invention provides a braking device for a narrow-gauge boom truck, which comprises a framework, a first wheel pair and a second wheel pair, wherein the first wheel pair and the second wheel pair are arranged on the framework;
Each brake assembly comprises a brake cylinder, a lever assembly, a first brake shoe and a second brake shoe, and the brake cylinder can respectively press the first brake shoe and the second brake shoe on the wheel treads of the same sides of the first wheel pair and the second wheel pair through the lever assembly so as to realize braking.
Specifically, the braking device adopts lever-type foundation braking, has low manufacturing cost, simplifies the whole vehicle braking structure under the condition of meeting the braking distance, can meet the braking requirement of braking initial speed 70km/h and braking distance less than or equal to 200m, has compact structure, light weight and low manufacturing cost, can save the cost by nearly 85 percent, and is convenient to use and maintain.
Preferably, the lever assembly comprises a transmission lever, a first brake lever, a second brake lever and a longitudinal pull rod;
the transmission lever is hinged to the framework along the horizontal direction through a first pin shaft, a piston rod of the brake cylinder is connected to one end of the transmission lever, and the piston rod of the brake cylinder can extend from the brake cylinder to the direction of the second wheel set;
The first brake lever is hinged with the framework along the vertical direction through a second pin shaft and is positioned at the wheel of the first wheel pair, the top end of the first brake lever is connected with the other end of the transmission lever, and the first brake shoe is arranged on
The first brake lever is positioned above the second pin shaft, and the first brake shoe faces the tread of the first wheel pair;
The second brake lever is hinged to the framework along the vertical direction through a third shaft pin and is positioned at the wheel of the second wheel set, a second brake shoe is arranged on the second brake lever and is positioned below the third shaft pin, and the second brake shoe faces the wheel tread of the second wheel set;
the longitudinal pull rod is connected between the bottom end of the first brake lever and the bottom end of the second brake lever;
When the piston rod of the brake cylinder extends towards the direction of the second wheel set, one end of the transmission lever moves towards the direction of the second wheel set, the other end of the transmission lever moves towards the direction of the first wheel set, and then the top end of the first brake lever is driven to move towards the direction of the first wheel set, so that the first brake shoe presses the wheel tread of the first wheel set, meanwhile, the bottom end of the first brake lever moves towards the direction of the second wheel set, and the bottom end of the second brake lever is pushed to move towards the direction of the second wheel set through the longitudinal pull rod, so that the second brake shoe presses the wheel tread of the second wheel set.
Specifically, a piston rod of the brake cylinder pushes one end of the transmission lever to move towards the direction of the second wheel set, the other end of the transmission lever moves towards the direction of the first wheel set, and then the upper part of the first brake lever is driven to move towards the direction close to the first wheel set, so that the first brake shoe presses the wheel tread of the first wheel set; when the upper part of the first brake lever moves towards the direction of the first wheel set, the lower part of the first brake lever moves towards the direction of the second wheel set, and then the lower end of the second brake lever is pushed to move towards the direction of the second wheel set by the longitudinal connecting rod, so that the second brake shoe presses the wheel tread of the second wheel set, and braking is realized.
As a preferable scheme, the piston rod is hinged with one end of the transmission lever at a first hinge point, the first brake lever is hinged with the other end of the transmission lever at a second hinge point, and the distance between the first hinge point and the first pin shaft is larger than the distance between the second hinge point and the first pin shaft.
Specifically, the distance between the first hinge point and the first pin shaft is greater than the distance between the second hinge point and the first pin shaft, so that the thrust of the piston rod is amplified by the transmission lever and is transmitted to the first brake lever and the first brake shoe.
Preferably, the other end of the first brake lever is hinged with one end of the longitudinal pull rod at a third hinge point, and the distance between the second hinge point and the second pin shaft is larger than the distance between the third hinge point and the second pin shaft.
Specifically, the distance between the second hinge point and the second pin shaft is larger than the distance between the third hinge point and the second pin shaft, so that the thrust of the piston rod is further amplified and transmitted to the second brake lever and the second brake shoe.
As the preferable scheme, the brake device further comprises a connecting rod, one end of the connecting rod is hinged to the framework, and the first brake lever is hinged to the other end of the connecting rod through a second pin shaft.
Specifically, the position of the second pin shaft can be changed through the hinge joint of the connecting rod, so that the first brake lever is prevented from being broken when being stressed.
Preferably, balance springs are connected between the first brake shoe and the first brake rod and between the second brake shoe and the second brake rod.
Specifically, the balance spring is used for adjusting the up-down clearance between the first brake shoe, the second brake shoe and the wheel, so that the wheel is uniformly contacted with the brake shoe.
Preferably, a transverse pull rod is connected between the two first brake shoes and between the two second brake shoes.
Specifically, the transverse pull rod is used for limiting the transverse movement of the two first brake shoes and the two second brake shoes during braking and preventing the brake shoes from being eccentric.
The invention also provides a bogie, comprising:
A frame;
a first wheel set and a second wheel set which are arranged on the framework;
a brake device according to any one of claims 1 to 7.
As a preferred scheme, the framework comprises a central beam, two side beams and two I-shaped end beams, wherein the two side beams are parallel to each other, two ends of the central beam are respectively fixed at the middle parts of the two side beams, the two I-shaped end beams are respectively arranged at the front end and the rear end of the central beam, and each I-shaped end beam is respectively fixedly connected with the end parts of the two side beams.
Specifically, the central beam is a box type central beam, and the two side beams are box type side beams, so that the structure of the framework is easier to produce and assemble, and steel plate materials are saved and the whole weight of the framework is reduced on the premise of ensuring enough strength and rigidity.
Further, a primary suspension device mounting seat, a secondary suspension device mounting seat, a traction device mounting seat, a foundation brake mounting seat, an axle gear box suspension mounting seat and other parts are arranged on the side beams and the central cross beam, and the whole machining is performed after the stress relief treatment of the framework, so that the positioning size and the positioning precision are ensured.
As the preferable scheme, axle boxes are respectively arranged on the axles of the first wheel pair and the second wheel pair, hanging plates are arranged on the axle boxes, and a wheel-falling-free rotary repair interface is designed at the lower part of each axle box.
Specifically, the lifting plate is arranged, so that the wheel set and the axle box can be lifted without binding.
Further, a single-stage axle gear box and a double-stage axle gear box are arranged on the axles of the first wheel pair and the second wheel pair, the gear box is compact in structure, multiple transmission ratios can be provided, and the wheels and the axle shafts of the wheel pairs are assembled by adopting an oil injection pressure assembly process.
Examples
Fig. 1 shows a side view of a bogie according to the present embodiment; fig. 2 shows a top view of the bogie according to the present embodiment; fig. 3 shows a schematic structural view of the brake device according to the present embodiment.
As shown in fig. 1 to 3, the bogie comprises a framework 1 and a first wheel pair 2 and a second wheel pair 3 which are arranged on the framework 1, the framework 1 comprises a box type central beam 14, two box type side beams 13 and two I-shaped end beams 15, the two box type side beams 13 are parallel to each other, two ends of the box type central beam 14 are respectively fixed in the middle of the two box type side beams 13, the two I-shaped end beams 15 are respectively arranged at the front end and the rear end of the box type central beam 14, each I-shaped end beam 15 is respectively fixedly connected with the end parts of the two box type side beams 13, the structure of the framework 1 is easier to produce and assemble, steel plate materials are saved on the premise of ensuring enough strength and rigidity, the whole weight of the framework is lightened, and the framework 1 is provided with a first-system suspension device mounting seat, a second-system suspension device mounting seat, a traction device mounting seat, a basic brake mounting seat, an axle gearbox suspension mounting seat and other components, and the whole machining is carried out after stress relief treatment on the framework, and the positioning size and precision are ensured;
The wheels and axles of the first wheel set 2 and the second wheel set 3 are assembled by adopting an oil injection pressure assembly process, axle boxes are respectively arranged on the axles, hanging plates are arranged on the axle boxes, the wheel sets and the axle boxes can be free from binding and resetting, the lower part of each axle box is provided with a wheel-falling-free rotary repair interface, the axles of the wheel sets are connected with a single-stage axle gear box and a double-stage axle gear box, the gear box is compact in structure and can be provided with various transmission ratios;
The braking device comprises a pair of braking components which are respectively arranged at two sides of the framework 1 and are positioned between the first wheel pair 2 and the second wheel pair 3; each brake assembly comprises a brake cylinder 4, a lever assembly, a first brake shoe 8 and a second brake shoe 11, and the brake cylinder 4 can respectively press the first brake shoe 8 and the second brake shoe 11 on wheel treads on the same sides of the first wheel set 2 and the second wheel set 3 through the lever assembly so as to realize braking.
The lever assembly comprises a transmission lever 5, a first brake lever 6, a second brake lever 10 and a longitudinal pull rod 9; the transmission lever 5 is hinged to the framework 1 along the horizontal direction through a first pin shaft, a piston rod of the brake cylinder 2 is connected to one end of the transmission lever 5, and a piston rod of the brake cylinder 4 can move from the brake cylinder 4 to the frame
The second wheel set 3 extends out in the direction; one end of the connecting rod 7 is hinged to the framework 1, the first brake lever 6 is hinged to the other end of the connecting rod 7 in the vertical direction through a second pin shaft and is positioned at the wheel of the first wheel set 2, the top end of the first brake lever 6 is connected to the other end of the transmission lever 5, the first brake shoe 8 is arranged on the first brake lever 6 and is positioned above the second pin shaft, and the first brake shoe 8 faces the wheel tread of the first wheel set 2; the second brake lever 10 is hinged to the framework 1 in the vertical direction through a third shaft pin and is positioned at the wheel of the second wheel set 3, a second brake shoe 11 is arranged on the second brake lever 10 and is positioned below the third pin shaft, and the second brake shoe 11 faces the wheel tread of the second wheel set 3; the longitudinal tie 9 is connected between the bottom end of the first brake lever 6 and the bottom end of the second brake lever 10;
the piston rod of the brake cylinder 4 is hinged with one end of the transmission lever 5 at a first hinge point, the first brake lever 6 is hinged with the other end of the transmission lever 5 at a second hinge point, and the distance between the first hinge point and the first pin shaft is larger than the distance between the second hinge point and the first pin shaft; the other end of the first brake lever 6 is hinged with one end of the longitudinal pull rod 9 at a third hinge point, and the distance between the second hinge point and the second pin shaft is larger than the distance between the third hinge point and the second pin shaft.
When the piston rod of the brake cylinder 4 extends towards the direction of the second wheel set 3, one end of the transmission lever 5 moves towards the direction of the second wheel set 3, the other end of the transmission lever 5 moves towards the direction of the first wheel set 2, and then the top end of the first brake lever 6 is driven to move towards the direction of the first wheel set 2, so that the first brake shoe presses 8 tightly the wheel tread of the first wheel set 2, meanwhile, the bottom end of the first brake lever 6 moves towards the direction of the second wheel set 3, and the bottom end of the second brake lever 10 is pushed to move towards the direction of the second wheel set 3 through the longitudinal pull rod 9, so that the second brake shoe 11 presses the wheel tread of the second wheel set 3.
Balance springs 16 are connected between the first brake shoes 8 and the first brake rod 6 and between the second brake shoes 11 and the second brake rod 10, and transverse pull rods 12 are connected between the two first brake shoes 8 and between the two second brake shoes 11.
The piston rod of the brake cylinder pushes one end of the transmission lever to move towards the direction of the second wheel set, the other end of the transmission lever moves towards the direction of the first wheel set, and then the upper part of the first brake lever is driven to move towards the direction close to the first wheel set, so that the first brake shoe presses the wheel tread of the first wheel set, the upper part of the first brake lever moves towards the direction of the first wheel set, the lower part of the first brake lever moves towards the direction of the second wheel set, and then the lower end of the second brake lever is pushed to move towards the direction of the second wheel set through the longitudinal connecting rod, so that the second brake shoe presses the wheel tread of the second wheel set.
The suspension device is arranged on the bogie to alleviate the impact of the circuit on the underframe and the framework of the car body, so that the vertical and transverse vibration can be effectively damped.
The traction device on the traction device mounting seat consists of a center pin, a rubber bushing, a copper sleeve and the like, wherein the center pin is mounted on a bottom price sleeper beam of a vehicle body, and the traction pin seat is mounted on a center cross beam of a bogie frame and used for transmitting traction force and braking force between the bogie and the underframe and enabling the bogie to effectively pass through a railway curve.
The stone sweeper devices are arranged at the end parts of two sides of the bogie and are used for removing obstacles on the rail surface. Considering the limitation of the space structure of the narrow-gauge framework, the stone sweeper support is arranged on the end beam of the framework, and the space position of the dry-type rim lubricating device is reserved; the sanding device comprises a sand box, a sanding pipe and a sanding valve and is used for increasing the friction coefficient of wheels and rails.
The train is stopped within 200m at the initial speed of 70km/h, and the braking multiplying power is required to be greatly increased due to the small axle distance of the bogie and the limited space, so that the braking device adopting the scheme has the advantages that the braking wheels are braked on the dry rail surface without locking, the braking distance is 188 m, the structural design is reasonable, and the design requirement when the braking distance of the initial speed of 70km/h is less than or equal to 200m can be ensured.
The foregoing description of embodiments of the invention has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described.
Claims (9)
1. A braking device for a narrow gauge boom truck, the truck comprising a frame and a first wheel set and a second wheel set mounted on the frame, characterized in that the braking device comprises a pair of braking components which are respectively arranged on two sides of the frame and are positioned between the first wheel set and the second wheel set;
Each brake assembly comprises a brake cylinder, a lever assembly, a first brake shoe and a second brake shoe, wherein the brake cylinder can respectively press the first brake shoe and the second brake shoe on wheel treads of the first wheel pair and the second wheel pair on the same side of the first brake shoe and the second brake shoe through the lever assembly so as to realize braking;
the lever assembly comprises a transmission lever, a first brake lever, a second brake lever and a longitudinal pull rod;
the transmission lever is hinged to the framework along the horizontal direction through a first pin shaft, a piston rod of the brake cylinder is connected to one end of the transmission lever, and the piston rod of the brake cylinder can extend from the brake cylinder to the direction of the second wheel pair;
The first brake lever is hinged to the framework along the vertical direction through a second pin shaft and is positioned at the wheel of the first wheel set, the top end of the first brake lever is connected to the other end of the transmission lever, the first brake shoe is installed on the first brake lever and is positioned above the second pin shaft, and the first brake shoe faces the wheel tread of the first wheel set;
the second brake lever is hinged to the framework along the vertical direction through a third pin shaft and is positioned at the wheel of the second wheel set, the second brake shoe is mounted on the second brake lever and is positioned below the third pin shaft, and the second brake shoe faces the wheel tread of the second wheel set;
The longitudinal pull rod is connected between the bottom end of the first brake lever and the bottom end of the second brake lever;
When the piston rod of the brake cylinder extends towards the direction of the second wheel set, one end of the transmission lever moves towards the direction of the second wheel set, the other end of the transmission lever moves towards the direction of the first wheel set, and then the top end of the first brake lever is driven to move towards the direction of the first wheel set, so that the first brake shoe presses the wheel tread of the first wheel set, meanwhile, the bottom end of the first brake lever moves towards the direction of the second wheel set, and the bottom end of the second brake lever is pushed to move towards the direction of the second wheel set by the longitudinal pull rod, so that the second brake shoe presses the wheel tread of the second wheel set.
2. A brake arrangement for a narrow gauge boom truck as claimed in claim 1, wherein said piston rod is hinged to said one end of said drive lever at a first hinge point, said first brake lever is hinged to said other end of said drive lever at a second hinge point, and the distance between said first hinge point and said first pin is greater than the distance between said second hinge point and said first pin.
3. A brake arrangement for a narrow gauge boom truck as claimed in claim 2, wherein the other end of said first brake lever is hinged to one end of said longitudinal tie at a third hinge point, the distance between said second hinge point and said second pin being greater than the distance between said third hinge point and said second pin.
4. The brake apparatus for a narrow gauge boom truck of claim 1 further comprising a connecting rod, one end of said connecting rod being hinged to said frame, said first brake lever being hinged to the other end of said connecting rod by said second pin.
5. The brake apparatus for a narrow gauge boom truck of claim 1 wherein a balance spring is connected between said first brake shoe and said first brake lever and between said second brake shoe and said second brake lever.
6. A brake arrangement for a narrow gauge boom truck as claimed in claim 1, wherein a transverse tie rod is connected between each of said first and second brake shoes.
7. A bogie, the bogie comprising:
A frame;
A first wheel set and a second wheel set mounted on the framework;
a braking device according to any one of claims 1 to 6.
8. The bogie of claim 7, wherein the frame comprises a central beam, two side beams and two i-shaped end beams, the two side beams are parallel to each other, two ends of the central beam are respectively fixed at the middle parts of the two side beams, the two i-shaped end beams are respectively arranged at the front end and the rear end of the central beam, and each i-shaped end beam is respectively fixedly connected with the end parts of the two side beams.
9. The bogie of claim 7, wherein axle boxes are respectively arranged on axles of the first wheel pair and the second wheel pair, hanging plates are arranged on the axle boxes, and a wheel-falling-free rotary repair interface is designed on the lower portion of each axle box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911224390.XA CN110834649B (en) | 2019-12-04 | Braking device for bogie of narrow-gauge boom car and bogie |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911224390.XA CN110834649B (en) | 2019-12-04 | Braking device for bogie of narrow-gauge boom car and bogie |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110834649A CN110834649A (en) | 2020-02-25 |
| CN110834649B true CN110834649B (en) | 2024-07-02 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212125143U (en) * | 2019-12-04 | 2020-12-11 | 太原中车时代轨道工程机械有限公司 | Braking device for narrow-gauge boom truck bogie and bogie |
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212125143U (en) * | 2019-12-04 | 2020-12-11 | 太原中车时代轨道工程机械有限公司 | Braking device for narrow-gauge boom truck bogie and bogie |
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