CN212220238U - Automatic adjusting structure for brake shoe of hanging brake beam - Google Patents
Automatic adjusting structure for brake shoe of hanging brake beam Download PDFInfo
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- CN212220238U CN212220238U CN202022146659.1U CN202022146659U CN212220238U CN 212220238 U CN212220238 U CN 212220238U CN 202022146659 U CN202022146659 U CN 202022146659U CN 212220238 U CN212220238 U CN 212220238U
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Abstract
The utility model discloses a suspension brake beam brake shoe automatic adjustment structure, which comprises a brake shoe support for mounting a brake shoe, and a brake shoe support hanger rotatably connected with the brake shoe support, wherein the bottom of the brake shoe support hanger is provided with a stop iron, a guide rod movably passes through the stop iron, one end of the guide rod close to the brake shoe support is connected with the brake shoe support, an elastic part is sleeved on the guide rod, and the elastic part is positioned on one side of the stop iron close to the brake shoe support; and the connecting position of the guide rod and the brake head is positioned below the connecting position of the brake head hanger and the brake head. The utility model provides a suspension type brake beam brake shoe automatic adjustment structure to brake shoe eccentric wear problem among the railway freight car bogie arresting gear among the solution prior art realizes preventing that the brake shoe from beating the head and eccentric wear, improves suspension type brake beam and uses reliability and security, reduces the purpose of overhauing the frequency.
Description
Technical Field
The utility model relates to a railway freight car bogie foundation brake field, concretely relates to hanging brake beam brake shoe automatic adjustment structure.
Background
In a traditional suspension type brake beam of a railway freight car bogie, in order to facilitate the automatic coincidence of a brake shoe rotating center and a wheel center when a car is braked, the brake shoe support rotating center is usually arranged below a horizontal center line of the wheel for a certain distance, and meanwhile, the brake shoe support rotates for an angle to obliquely point to the wheel center. Thus, the center of gravity of the brake head is not located at the same position as the rotation center of the brake head hanger, and the center of gravity is often located at the front end of the rotation center of the brake head hanger, which is close to the direction of the wheel. This results in a brake head (or the entire brake beam assembly) which, when the vehicle is braked under a reduced braking force, produces a gravitational moment on the brake head which moves the top of the brake head towards the wheel and the bottom away from the wheel. The result of this movement is often to cause the gap between the head of the brake shoe and the wheel to be small or to be loosely embraced, which in severe cases can cause the top of the brake shoe to be loosely embraced with the wheel, causing the brake shoe to be "headed" to cause the uneven wear phenomenon that the top of the brake shoe is seriously worn and the bottom is slowly worn. The eccentric wear of the brake shoe can bring certain hidden trouble to the running safety of the railway freight car, and meanwhile, the abrasion of the brake shoe is accelerated, and the frequency and the workload of vehicle maintenance are increased.
SUMMERY OF THE UTILITY MODEL
The utility model provides a suspension type brake beam brake shoe automatic adjustment structure to brake shoe eccentric wear problem among the railway freight car bogie arresting gear among the solution prior art realizes preventing that the brake shoe from beating the head and eccentric wear, improves suspension type brake beam and uses reliability and security, reduces the purpose of overhauing the frequency.
The utility model discloses a following technical scheme realizes:
a suspension type brake beam brake shoe automatic adjusting structure comprises a brake head used for mounting a brake shoe and a brake head suspension rotatably connected with the brake head, wherein a stop iron is arranged at the bottom of the brake head suspension, a guide rod movably penetrates through the stop iron, one end of the guide rod, which is close to the brake head, is connected with the brake head, an elastic part is sleeved on the guide rod, and the elastic part is positioned on one side of the stop iron, which is close to the brake head; and the connecting position of the guide rod and the brake head is positioned below the connecting position of the brake head hanger and the brake head.
Brake shoe eccentric wear problem among the rail wagon bogie arresting gear among the prior art, the utility model provides a suspension type brake beam brake shoe automatic adjustment structure, this structure set up the buting iron in the bottom that the brake head held in the palm was hung to make a guide arm activity pass the buting iron, the guide arm is close to the one end that the brake head held in the palm and links to each other with the brake head, thereby when making the brake head take place to rotate, the guide arm can be followed its axis and be linear motion. The elastic component is established to the cover on the guide arm, and the elastic component is located the one side that the stop iron is close to the brake head, and when the brake head rotated and brakied, the elastic component was compressed, and when the braking was alleviated, the elasticity restoring force of elastic component was used to the brake head. Wherein, the hookup location of guide arm and brake head holds in the palm, be located under the hookup location of brake head hold in the palm hanging with the brake head holds in the palm, when in order to ensure the braking to alleviate, the moment that the restoring force of elastic component produced the brake head holds in the palm, can overcome the moment that brake head holds in the palm gravity production, so as to overcome among the prior art tile support top and paste to the wheel motion, and the bottom then keep away from "virtual armful" or even "the phenomenon of taking one's head" that the wheel motion leads to, thereby solve the inhomogeneous problem in brake shoe top and bottom and wheel clearance, avoid the brake shoe eccentric wear, show improvement hanging brake beam and use reliability and security, reduce the maintenance frequency.
Furthermore, the elastic part is a compression spring, spring pressing plates are arranged at two ends of the elastic part, and the spring pressing plates are sleeved on the guide rod in a sliding mode; one of the spring pressing plates is in contact with the stop iron, the other spring pressing plate is limited by a positioning assembly, and the positioning assembly can move along the axis of the guide rod. The spring pressing plates at two ends ensure that the compression spring is always in a compression state, the spring pressing plate at one end of the compression spring is in contact with the stop iron and cannot pass through the stop iron, and the spring pressing plate at the other end of the compression spring is determined to be limited by the assembly, so that the relative stability and reliability of the elastic piece are ensured. When braking, the guide rod passes through the stop iron to do linear motion, and the elastic piece is further compressed due to the blocking of the stop iron, so that the reset force after the braking is released is ensured. In addition, under the normal running condition that the brake is not carried out, because the elastic part is always in a compressed state, the elastic part can always provide a torque for the brake head, the torque can eliminate the torque generated by the gravity of the brake head, and the phenomenon that the brake shoe is worn eccentrically can not occur in the normal running of the railway freight car.
Further, the guide rod comprises a thread section close to the brake head and a light rod section far away from the brake head; the positioning assembly comprises a locking nut and an adjusting nut which are matched with the thread section, and the locking nut is positioned on one side of the adjusting nut, which is far away from the compression spring. The thread section is matched with the locking nut and the adjusting nut, so that the locking nut and the adjusting nut are ensured to be in stable threaded connection. The polished rod section is convenient for the guide rod to movably pass through the stop iron. Through adjusting the locking moment and the position of adjusting nut in this scheme, can obtain the compressive force when different compression spring receives the compression according to the design requirement to different spring restoring forces when obtaining the braking and alleviating. Thus, the proper spring restoring force which enables the gap between the top and the bottom of the brake head of the suspended brake beam to be equivalent to the gap between wheels can be artificially set according to the relation between the gravity center position of the brake head and the rotation center position of the brake head hanger.
Furthermore, the stop iron is an angle iron, one side surface of the angle iron is attached to the brake head hanger, and the other side surface of the angle iron is provided with a through hole for a guide rod to pass through; the guide rod is kept away from the one end of brake head and can be dismantled and connect the locating part, the locating part can't pass the through-hole. The guide rod is prevented from falling off from the stop iron through the limiting part.
Furthermore, the guide rod is connected with the brake head support through a fixed shaft, and two ends of the fixed shaft are respectively connected with the brake head support and the guide rod in a rotating mode. The fixed shaft is connected with the brake head and the guide rod in any existing rotary connection mode; when the brake head rotates, the fixed shaft is driven to move, so that the guide rod is driven to move.
Furthermore, a first pin hole and a second pin hole are formed in the brake head hanger, the first pin hole is used for being connected with the framework, and the second pin hole is used for being in pin connection with the brake head hanger. The framework is an existing component of a suspension type brake beam of a bogie of the railway wagon, and the details are not repeated. The brake head support hanger is provided with a second pin hole, and the corresponding brake head support is provided with a circular through hole matched with the second pin hole, so that the second pin hole of the brake head support hanger can be conveniently aligned and then installed on the pin shaft at the end part of the brake beam together.
The assembly method based on the automatic brake shoe adjusting structure of the hanging brake beam comprises the following steps:
s1, pin-jointing the brake head with the brake head hanger, and connecting the top of the brake head hanger to the framework;
s2, assembling the elastic part on the guide rod, and adjusting the initial length of the elastic part;
s3, enabling the tail part of the guide rod to penetrate through the stop iron and enabling the elastic piece to be propped against the stop iron;
and S4, connecting the head of the guide rod with the brake head.
Further, the step of assembling the elastic member on the guide bar in step S2 includes:
s201, sleeving a compression spring on a guide rod through two spring pressing plates;
s202, sequentially screwing an adjusting nut and a locking nut into the threaded section of the head of the guide rod, controlling the position of the adjusting nut, and pushing the compression spring against a stop iron to realize the adjustment of the initial length of the compression spring;
and S203, fastening the locking nut on the outer side of the adjusting nut, and fixing the position of the adjusting nut.
Through adjusting the locking moment and the position of adjusting nut in this scheme, can obtain the compressive force when different compression spring receives the compression according to the design requirement to different spring restoring forces when obtaining the braking and alleviating. Thus, the proper spring restoring force which enables the gap between the top and the bottom of the brake head of the suspended brake beam to be equivalent to the gap between wheels can be artificially set according to the relation between the gravity center position of the brake head and the rotation center position of the brake head hanger.
Further, the step of connecting the head of the guide rod with the brake head comprises the following steps: the fixed shaft is inserted into a round hole at the head of the guide rod, the fixed shaft and the guide rod are connected by a pin through a gasket and a cotter pin, and the other end of the fixed shaft is inserted into a small hole at the bottom of a brake shoe support web plate to be connected by the pin.
The use method based on the automatic brake shoe adjusting structure of the hanging brake beam comprises the following steps:
when the vehicle is braked, the brake head hanger and the brake head rotate relatively, and the length of the elastic piece between the adjusting nut and the stop iron is compressed;
when the vehicle brakes are released, the elastic member generates a restoring force which generates a torque M2 in the opposite direction to the gravity-generated torque M1 at the lower side of the center of gravity of the brake head, thereby moving the bottom of the brake head closer to the wheel and the head away from the wheel.
When the brake is released, the method ensures that the bottom of the brake head moves towards the direction close to the wheel and the head of the brake head moves away from the wheel, so that the clearance between each part of the brake head and the wheel tends to be balanced, and the eccentric wear phenomenon of the top of the brake shoe caused by the fact that the top is attached to the wheel under the action of gravity is avoided. And under the normal running (non-braking) state of the railway wagon, the compression force can be provided by the compression spring to overcome the gravity moment, so that the uniformity of the gap between each part of the brake head and the wheel is always ensured.
Compared with the prior art, the utility model, following advantage and beneficial effect have:
1. the utility model relates to a suspension type brake beam brake shoe automatic adjustment structure utilizes brake head and brake head to hold in the palm and hang the characteristics of alleviating in-process relative motion at vehicle braking and braking, through hold in the palm and brake head at the brake head and hang between installation compression spring, the characteristic of restitution of make full use of spring makes brake shoe and wheel clearance tend to unanimity when the operating mode is alleviated in vehicle braking to solve traditional suspension type brake beam brake shoe "beat the head" eccentric wear phenomenon.
2. The utility model relates to a suspension type brake beam brake shoe automatic adjustment structure, simple structure, compactness, spare part is small in quantity, is convenient for make, install, overhaul. The utility model discloses can improve hanging brake beam and use reliability and security, especially alleviate because the hidden danger that the brake shoe eccentric wear brought for driving safety, simultaneously, the monitoring frequency and the maintenance frequency of reducible bogie brake shoe application condition reduce the wearing and tearing speed of brake shoe, improve vehicle application department's economic benefits.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural view of a brake head carrier according to an embodiment of the present invention;
FIG. 3 is a schematic view of a guide bar according to an embodiment of the present invention;
fig. 4 is a schematic view of the working principle of the embodiment of the present invention.
Reference numbers and corresponding part names in the drawings:
1-brake head, 2-brake head hanger, 3-stop iron, 4-fixed shaft, 5-guide rod, 6-locking nut, 7-adjusting nut, 8-spring pressure plate, 9-elastic piece, 10-brake shoe, 11-through hole, 12-limiting piece, 13-first pin hole, 14-second pin hole.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.
Example 1:
a suspension type brake beam brake shoe automatic adjusting structure comprises a brake head 1 for mounting a brake shoe 10 and a brake head suspension 2 rotationally connected with the brake head 1, wherein a stop iron 3 is arranged at the bottom of the brake head suspension 2, a guide rod 5 movably penetrates through the stop iron 3, one end, close to the brake head 1, of the guide rod 5 is connected with the brake head 1, an elastic part 9 is sleeved on the guide rod 5, and the elastic part 9 is positioned on one side, close to the brake head 1, of the stop iron 3; the connecting position of the guide rod 5 and the brake head 1 is positioned below the connecting position of the brake head hanger 2 and the brake head 1.
The assembling method of the embodiment comprises the following steps:
s1, pin-jointing the brake head 1 with the brake head hanger 2, and connecting the top of the brake head hanger 2 to the framework;
s2, assembling the elastic piece 9 on the guide rod 5, and adjusting the initial length of the elastic piece 9;
s3, enabling the tail part of the guide rod 5 to penetrate through the stop iron 3, and enabling the elastic piece 9 to be pressed against the stop iron 3;
and S4, connecting the head of the guide rod 5 with the brake head 1.
Example 2:
an automatic adjusting structure for brake shoe of hanging brake beam as shown in fig. 1 to 4:
as shown in fig. 1, the brake head of the present embodiment includes a brake head 1, a brake head hanger 2, a stop iron 3, a fixing shaft 4, a guide rod 5, a locking nut 6, an adjusting nut 7, a spring pressing plate 8, and an elastic member 9. Wherein the elastic member 9 is a compression spring.
In the embodiment, the brake head support 1 is of a cast structure, the back part of the brake head support is of a double-wall groove type structure, and a middle pin hole of the brake head support hanger 2 is aligned and then is arranged on a pin shaft at the end part of the brake beam together in the middle of a round through hole formed in the middle of two wall webs.
As shown in fig. 2, the brake head hanger 2 is a crank-shaped forged structure, the top end of the brake head hanger is provided with a pin hole connected with the framework, the middle part of the brake head hanger is provided with a pin hole connected with two webs of the brake head hanger 1, the crank position is welded with a stop iron 3, the stop iron 3 is provided with a through hole 11, and the stop iron 3 is used for supporting the guide rod 5 and limiting the stroke of the compression spring.
As shown in fig. 3, the compression spring is mounted on the guide rod 5 through two spring pressing plates 8, a section of the head of the guide rod 5 is a thread, the tail of the guide rod is a polished rod structure, and an adjusting nut 7 and a locking nut 6 are arranged at the thread part. The adjusting nut 7 functions to set an initial length of the compression spring, and the locking nut 6 functions to fix the position of the adjusted adjusting nut 7. The polished rod part at the tail part of the guide rod 5 penetrates through the through hole on the stop iron 3, and the compression spring is propped against the stop iron 3. The fixed shaft 4 is inserted into a round hole at the head part of the guide rod 5, then the fixed shaft 4 and the guide rod 5 are connected by a pin by adopting a gasket and a cotter pin, and the other end of the fixed shaft 4 is inserted into a small hole at the bottom of a web plate of the brake head 1 and then connected by the pin. Wherein, through adjusting the locking moment and the position of adjusting nut 7, can obtain the compressive force when different compression springs receive the compression according to the design requirement to different spring restoring forces when obtaining the braking and alleviating. Therefore, the proper spring restoring force which enables the top and the bottom of the brake head holder 1 to be equivalent to the wheel clearance can be selected according to the relation between the gravity center position of the brake head holder 1 and the rotation center position of the brake head holder crane 2.
When the vehicle is braked, the brake head crane 2 and the brake head 1 rotate relatively, and the length of a compression spring among the adjusting nut 7, the locking nut 6 and the stop iron 3 is compressed; when the vehicle is braked and relieved, as shown in fig. 4, the compression spring generates a restoring force, and the restoring force generates a torque M2 in the opposite direction of the torque M1 generated by the gravity on the lower side of the gravity center of the brake head 1, so that the bottom of the brake head 1 moves towards the direction close to the wheel and the head moves away from the wheel, thus the clearance between each part of the brake head 1 and the wheel tends to be balanced, and the phenomenon of partial head hitting of the brake shoe caused by the fact that the top is attached to the wheel under the action of the gravity is avoided.
The embodiment utilizes the characteristic that brake head 1 and brake head hanger 2 release the in-process relative motion at vehicle braking and braking, through install compression spring between brake head 1 and brake head hanger 2, the elasticity restoring force of make full use of spring makes the clearance between brake shoe 10 and the wheel tend to unanimous when the vehicle braking is alleviated the operating mode to solve traditional suspension type brake beam brake shoe "beat head" eccentric wear phenomenon. The embodiment has the advantages of simple and compact structure, small number of parts and convenience in manufacturing, installation and overhaul. The embodiment can improve the use reliability and safety of the hanging brake beam, particularly reduce the hidden trouble caused by the eccentric wear of the brake shoe to the traffic safety, simultaneously reduce the monitoring frequency and the maintenance frequency of the application condition of the bogie brake shoe, reduce the abrasion rate of the brake shoe and improve the economic benefit of vehicle application departments.
In the present embodiment, the step of assembling the elastic member 9 to the guide bar 5 during the assembling process includes:
s201, sleeving a compression spring on a guide rod 5 through two spring pressing plates 8;
s202, sequentially screwing an adjusting nut 7 and a locking nut 6 into the threaded section at the head of the guide rod 5, controlling the position of the adjusting nut 7, and pushing the compression spring against the stop iron 3 to realize the adjustment of the initial length of the compression spring;
s203, the locknut 6 is fastened to the outside of the adjusting nut 7, and the position of the adjusting nut 7 is fixed.
Preferably, the step of connecting the head of the guide rod 5 with the brake head 1 comprises: the fixed shaft 4 is inserted into a round hole at the head part of the guide rod 5, the fixed shaft 4 and the guide rod 5 are connected by a pin by adopting a gasket and a cotter pin, and the other end of the fixed shaft 4 is inserted into a small hole at the bottom of a web plate of the brake head 1 for pin connection.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Further, the term "connected" used herein may be directly connected or indirectly connected via other components without being particularly described.
Claims (6)
1. A suspension type brake beam brake shoe automatic adjusting structure comprises a brake head (1) used for installing a brake shoe (10), and is characterized by further comprising a brake head suspension (2) rotatably connected with the brake head (1), wherein a stop iron (3) is arranged at the bottom of the brake head suspension (2), a guide rod (5) movably penetrates through the stop iron (3), one end, close to the brake head (1), of the guide rod (5) is connected with the brake head (1), an elastic part (9) is sleeved on the guide rod (5), and the elastic part (9) is positioned on one side, close to the brake head (1), of the stop iron (3); the connecting position of the guide rod (5) and the brake head (1) is positioned below the connecting position of the brake head hanger (2) and the brake head (1).
2. The automatic adjusting structure for the brake shoe of the hanging brake beam as claimed in claim 1, wherein the elastic member (9) is a compression spring, spring pressing plates (8) are arranged at two ends of the elastic member (9), and the spring pressing plates (8) are slidably sleeved on the guide rod (5); one of the spring pressing plates (8) is in contact with the stop iron (3), the other spring pressing plate (8) is limited by a positioning assembly, and the positioning assembly can move along the axis of the guide rod (5).
3. The automatic adjustment structure of a suspended brake beam brake shoe as claimed in claim 2, wherein the guide rod (5) comprises a threaded section near the brake head (1) and a polished rod section far from the brake head (1); the positioning assembly comprises a locking nut (6) and an adjusting nut (7) which are matched with the thread section, and the locking nut (6) is positioned on one side, departing from the compression spring, of the adjusting nut (7).
4. The automatic brake shoe adjusting structure of a hanging brake beam as claimed in claim 1, wherein the stop iron (3) is an angle iron, one side surface of the angle iron is attached to the brake shoe support hanger (2), and the other side surface is provided with a through hole (11), and the through hole (11) is used for a guide rod (5) to pass through; one end of the guide rod (5) far away from the brake head (1) is detachably connected with a limiting part (12), and the limiting part (12) cannot penetrate through the through hole (11).
5. The automatic brake shoe adjusting structure of a hanging brake beam as claimed in claim 1, wherein the guide rod (5) is connected with the brake head (1) through a fixed shaft (4), and both ends of the fixed shaft (4) are respectively connected with the brake head (1) and the guide rod (5) in a rotating manner.
6. A suspended brake beam brake shoe automatic adjustment structure according to claim 1, characterized in that the brake head hanger (2) is provided with a first pin hole (13) and a second pin hole (14), the first pin hole (13) is used for connecting with a frame, and the second pin hole (14) is used for pin-connecting with the brake head (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022146659.1U CN212220238U (en) | 2020-09-27 | 2020-09-27 | Automatic adjusting structure for brake shoe of hanging brake beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022146659.1U CN212220238U (en) | 2020-09-27 | 2020-09-27 | Automatic adjusting structure for brake shoe of hanging brake beam |
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| CN212220238U true CN212220238U (en) | 2020-12-25 |
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| CN202022146659.1U Active CN212220238U (en) | 2020-09-27 | 2020-09-27 | Automatic adjusting structure for brake shoe of hanging brake beam |
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| CN (1) | CN212220238U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111994123A (en) * | 2020-09-27 | 2020-11-27 | 成都工业学院 | Automatic adjusting structure for brake shoe of hanging brake beam and assembling and using method thereof |
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2020
- 2020-09-27 CN CN202022146659.1U patent/CN212220238U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111994123A (en) * | 2020-09-27 | 2020-11-27 | 成都工业学院 | Automatic adjusting structure for brake shoe of hanging brake beam and assembling and using method thereof |
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