阅读说明：本技术 一种带式制动装置及装有该带式制动装置的齿轨车辆 (Belt type braking device and toothed rail vehicle with same ) 是由 沈铭乾 艾正武 方长征 蒋廉华 万建兵 刘德学 于 2019-10-15 设计创作，主要内容包括：一种带式制动装置,包括制动鼓、制动带、弹簧、缓解闸缸和传动机构,所述制动带套设在所述制动鼓上,所述制动带通过所述传动机构与所述弹簧和缓解闸缸连接,所述制动带设有多个,多个所述制动带平行地套设在所述制动鼓上。由于采用了上述技术方案,与现有技术相比,本发明通过平行设置多个制动带来使得制动带宽度B增大,比压力降低,既满足了车辆在超大坡道上大制动力的需求,又不会占用过大的安装空间,缩小了整个带式制动装置的占用体积。另一方面,由于配置了多个制动带,因此不会因单根带宽过宽导致制动带不易与制动鼓紧密贴合,也不会影响摩擦副的散热。进一步地,本发明还通过在弹簧与所述杠杆臂之间设置平衡组件来实现弹簧输出力的平衡。(The utility model provides a belt braking device, includes brake drum, braking area, spring, alleviates brake cylinder and drive mechanism, the braking area cover is established on the brake drum, the braking area passes through drive mechanism with the spring is connected with alleviating brake cylinder, the braking area is equipped with a plurality ofly, and is a plurality of the braking area is established parallelly to the cover on the brake drum. Due to the adoption of the technical scheme, compared with the prior art, the width B of the braking belt is increased and the specific pressure is reduced by arranging a plurality of braking belts in parallel, so that the requirement of a vehicle on a large braking force on an oversized ramp is met, an overlarge installation space is not occupied, and the occupied volume of the whole belt type braking device is reduced. On the other hand, because a plurality of brake belts are arranged, the brake belts are not easy to be tightly attached to the brake drum due to the fact that the width of a single belt is too wide, and heat dissipation of the friction pair is not influenced. Further, the balance assembly is arranged between the spring and the lever arm to balance the output force of the spring.)

1. The utility model provides a belt braking device, includes brake drum, brake area, spring, alleviates brake cylinder and drive mechanism, the brake area cover is established on the brake drum, the brake area passes through drive mechanism with the spring is connected its characterized in that with alleviating brake cylinder: the brake drum is characterized in that a plurality of brake belts are arranged and sleeved on the brake drum in parallel.

2. The band brake apparatus according to claim 1, characterized in that: the transmission mechanism comprises a lever arm and a brake rod, one end of the lever arm is provided with a first hinge piece, the other end of the lever arm is provided with a first rotating pair, and a second hinge piece is arranged between the first hinge piece and the first rotating pair; the first hinge is connected with one end of the release brake cylinder, and the second hinge is connected with one end of the spring; the brake device comprises a spring, a plurality of brake belts and a plurality of brake rods, wherein the number of the brake rods is consistent with that of the brake belts, one ends of the brake rods are rotatably connected with one end of the spring, the other ends of the brake rods are respectively provided with a crank arm, the middle part of each crank arm is fixedly connected with the other end of the brake rod, two ends of each crank arm are respectively connected with two corresponding ends of the brake belt, and a second revolute pair is arranged at the joint of each crank arm and the other end of each brake rod.

3. The band brake apparatus according to claim 2, characterized in that: the two springs are arranged, a balance assembly is arranged between the two springs and the lever arm and comprises a joint seat and a joint rod, one end of the joint seat is hinged with the second hinge piece, the other end of the joint seat is vertically provided with a third hinge piece, the middle part of the joint rod is hinged with the third hinge piece, and two ends of the joint rod are respectively connected with one ends of the two springs; and both ends of the joint rod are rotatably connected with one end of the brake rod.

4. The band brake apparatus according to claim 3, characterized in that: through holes are formed in the two ends of the joint rod along the length direction of the springs, adjusting screw rods are arranged in the through holes, and the two springs are connected with the two ends of the joint rod through the adjusting screw rods respectively.

5. The band brake apparatus according to claim 3 or 4, characterized in that: the number of the brake belts is two, and the number of the brake rods is two; one ends of the two brake levers are respectively connected with the two ends of the joint rod in a rotating way.

6. The band brake apparatus according to claim 1 or 2, characterized in that: a brake pad gap indicating screw rod is further arranged between the relieving brake cylinder and the lever arm, one end of the brake pad gap indicating screw rod is fixedly arranged on the relieving brake cylinder, and the other end of the brake pad gap indicating screw rod is provided with a positioning pin; one end of the lever arm is provided with a stop head matched with the positioning pin.

7. A rack-and-pinion vehicle equipped with the belt brake device according to any one of claims 2 to 6, characterized in that: the bogie frame comprises a mounting plate and a mounting support, and a first hinge hole and a second hinge hole are formed in the mounting support; alleviate the other end of brake cylinder and the equal fixed mounting of the other end of spring is in on the mounting panel, first revolute pair with first hinge hole rotates to be connected, the second revolute pair with the second hinge hole rotates to be connected.

8. The rack vehicle according to claim 7, characterized in that: the brake band with still be equipped with between the mounting panel and hang the mechanism, hang the mechanism including hanging the spring and installing install the lug on the brake band, hang the one end of spring respectively rather than corresponding the lug is connected, the other end all with the mounting panel is connected.

9. The rack vehicle according to claim 8, characterized in that: the brake band is equipped with two, hang the mechanism and include two sets of springs of hanging and install respectively two the two lugs on the brake band.

10. The rack vehicle according to claim 9, characterized in that: the hanging mechanism further comprises a hanging seat, and the top of the hanging seat is fixedly connected with the mounting plate; the hanging seat and the lifting lugs are respectively provided with a hook, one end of the hanging spring is connected with the hook on the hanging seat, and the other end of the hanging spring is connected with the hook on the lifting lug; the bottom of the hanging seat is provided with two vertical guide grooves, and the two lifting lugs are respectively embedded in the two guide grooves.

Technical Field

The invention relates to the field of braking equipment, in particular to a belt type braking device and a toothed rail vehicle with the belt type braking device.

Background

The basic brake device that domestic urban rail vehicle adopted mainly includes: the braking force provided by the basic braking unit directly or indirectly acts on the wheel pair, and finally the braking and parking of the vehicle are realized through the interaction between the wheel and the rail. However, the existing railway vehicle is limited by adhesive braking force, cannot improve the braking force without limit, and cannot meet the braking requirement of the vehicle on an oversized ramp. The rack rail vehicle is in meshed transmission between the gear disc and the rack rail, braking force acts on the rack rail through the gear disc, the defect of insufficient wheel rail relation is effectively overcome, and the functions of braking, parking and the like of the vehicle on the super-large slope are achieved.

The conventional belt brake device is mainly applied to equipment such as mining machinery, ship anchors, winches and the like, and in order to prevent the risk that hydraulic power assistance is lost and braking force is lost due to sudden flameout of the mechanical equipment in dangerous occasions such as ramps, the mechanical equipment generally adopts a normally closed belt brake device. Normally closed band brakes are normally supplied with an initial braking force by a compression spring and are normally operated manually by a hand wheel screw or a hydraulic jack to overcome the force of the compression spring when emergency release of the brake is required. The invention discloses a Chinese patent with an authorization publication number of CN100402406C, and discloses a normal-close and normal-open dual-function brake device for a crane, which comprises a brake drum, a brake belt I, a pin shaft, a crank arm, a spring, an oil cylinder and the like, wherein the brake force is provided by the spring, the brake is relieved by overcoming the acting force of the spring by the oil cylinder, and the structure can realize both a normal-close function and a normal-open function.

The specific pressure of the braking band needs to satisfy: p2 × Fmax/(D.B) ≦ P, wherein: p is specific pressure; f, the variable tension of the brake belt is in the range from the minimum tension F2 to the maximum tension F1 of the brake belt; d is the brake drum diameter; b-width of brake band; [ P ] -allowable specific pressure. From the above formula, it can be seen that the diameter of the brake drum and the braking force need to satisfy a certain range subject to the specific pressure, and in order to obtain a larger braking force, the specific pressure requirement can be satisfied by increasing the diameter D of the brake drum or increasing the width B of the brake band. Because the too wide band width will be unfavorable for brake band and brake drum to closely laminate, also do not favorable to the heat dissipation of friction pair, consequently current belt brake equipment generally can not satisfy the requirement of specific pressure through increase brake band width B, but satisfies the requirement of specific pressure through increase brake drum diameter to lead to the structure huge, need occupy great installation space.

Disclosure of Invention

In order to solve the problems that the conventional belt type braking device in the background art is large in structure and needs to occupy larger installation space, the invention provides a belt type braking device, and the specific technical scheme is as follows.

The utility model provides a belt braking device, includes brake drum, brake area, spring, alleviates brake cylinder and drive mechanism, the brake area cover is established on the brake drum, the brake area passes through drive mechanism with the spring is connected its characterized in that with alleviating brake cylinder: the brake drum is characterized in that a plurality of brake belts are arranged and sleeved on the brake drum in parallel.

Therefore, the method for reducing the specific pressure by increasing the diameter of the brake drum in the traditional belt brake device is abandoned, the width B of the brake belt is increased by arranging a plurality of brake belts in parallel, the specific pressure is reduced, the requirement of large braking force of a vehicle on an oversized ramp is met, too large installation space is not occupied, and the occupied volume of the whole belt brake device is reduced. On the other hand, because a plurality of brake belts are arranged, the brake belts are not easy to be tightly attached to the brake drum due to the fact that the width of a single belt is too wide, and heat dissipation of the friction pair is not influenced.

Preferably, the transmission mechanism comprises a lever arm and a brake rod, one end of the lever arm is provided with a first hinge part, the other end of the lever arm is provided with a first rotating pair, and a second hinge part is arranged between the first hinge part and the first rotating pair; the first hinge is connected with one end of the release brake cylinder, and the second hinge is connected with one end of the spring; the brake device comprises a spring, a plurality of brake belts and a plurality of brake rods, wherein the number of the brake rods is consistent with that of the brake belts, one ends of the brake rods are rotatably connected with one end of the spring, the other ends of the brake rods are respectively provided with a crank arm, the middle part of each crank arm is fixedly connected with the other end of the brake rod, two ends of each crank arm are respectively connected with two corresponding ends of the brake belt, and a second revolute pair is arranged at the joint of each crank arm and the other end of each brake rod.

This device is normal close formula belt brake device, adopts the spring as the source of braking force, adopts to alleviate the brake cylinder and provide alleviating and the braking force output control of braking force to satisfy the parking demand of rack rail vehicle on super large ramp. When braking, the spring is compressed, so that the brake rod rotates clockwise around the second revolute pair to drive the crank arm to rotate clockwise, and the brake belt is tensioned to provide braking force; when the brake is released, the release brake cylinder extends to push the lever arm to rotate anticlockwise around the first rotating pair, the spring is stretched by overcoming the tensile force of the spring, and the brake rod rotates anticlockwise around the second rotating pair to drive the crank arm to rotate anticlockwise, so that the brake band is released to release the brake force.

Preferably, two springs are arranged, a balance assembly is arranged between each spring and the lever arm, the balance assembly comprises a joint seat and a joint rod, one end of the joint seat is hinged to the second hinge, a third hinge is vertically arranged at the other end of the joint seat, the middle of the joint rod is hinged to the third hinge, and two ends of the joint rod are respectively connected with one ends of the two springs; and both ends of the joint rod are rotatably connected with one end of the brake rod.

The braking force of the braking device can be increased by increasing the number of the springs, but the problem of unbalanced spring tension output is caused. According to the invention, the balance assembly is arranged between the spring and the lever arm, when the spring tension at two ends of the joint rod is unbalanced, the joint rod can rotate around the axis of the third hinge piece, so that the balance of the output force of the spring is realized, and meanwhile, the brake rod can be linked to realize the balanced transmission and output of the braking force, so that the equal clearance of the brake pad when the braking is relieved is ensured, and the structure is compact, and the brake device is suitable for the limited installation space of the train walking part. On the other hand, when the brake pad gap is not uniform, the balance component can perform uniform adjustment of the brake pad gap under the action of the tension of the spring.

Preferably, through holes are formed in the two ends of the joint rod along the length direction of the springs, adjusting screws are arranged in the through holes, and the two springs are respectively connected with the two ends of the joint rod through the adjusting screws. The adjustment of the output of the spring braking force can be realized by adjusting the screw rod.

Preferably, the number of the brake bands is two, and the number of the brake levers is two; one ends of the two brake levers are respectively connected with the two ends of the joint rod in a rotating way.

The two groups of springs provide braking force required by braking, the two brake rods and the two brake belts are used for amplifying, transmitting and outputting the braking force, and the balance assembly is matched to ensure the balanced output of the braking force of the two groups of braking force amplification actuating mechanisms (the double springs, the double brake rods and the double brake belts).

Preferably, a brake pad gap indicating screw rod is further arranged between the relieving brake cylinder and the lever arm, one end of the brake pad gap indicating screw rod is fixedly installed on the relieving brake cylinder, and the other end of the brake pad gap indicating screw rod is provided with a positioning pin; one end of the lever arm is provided with a stop head matched with the positioning pin.

The existing belt brake is of an open structure, and the gap between brake pads is easy to observe. The belt type brake device can directly and conveniently observe and adjust the brake pad gap even if the belt type brake device is arranged in a relatively closed narrow space such as a rack-and-pinion bogie by arranging the brake pad gap indicating screw rod.

Based on the same inventive concept, the invention also provides a rack rail vehicle provided with the belt type brake device, which comprises a bogie framework, wherein the bogie framework comprises a mounting plate and a mounting support, and the mounting support is provided with a first hinge hole and a second hinge hole; alleviate the other end of brake cylinder and the equal fixed mounting of the other end of spring is in on the mounting panel, first revolute pair with first hinge hole rotates to be connected, the second revolute pair with the second hinge hole rotates to be connected.

The installation space of the railway vehicle is extremely limited, the diameter of the brake drum is limited, and the requirement on the specific pressure cannot be met by a method of increasing the diameter of the brake drum.

Preferably, a hanging mechanism is further arranged between the brake band and the mounting plate, the hanging mechanism comprises a hanging spring and lifting lugs mounted on the brake band, one end of the hanging spring is connected with the corresponding lifting lugs, and the other end of the hanging spring is connected with the mounting plate.

The structure fully utilizes the limited space on the tooth rail bogie, solves the problem of uneven brake pad gaps caused by large brake wrap angles, solves the problem of wheel sticking when partial brake pads are relieved due to the self weight of a brake band, and solves the installation problem caused by the limited space of a walking part of the rail transit equipment.

Preferably, there are two braking belts, and the hanging mechanism comprises two groups of hanging springs and two lifting lugs respectively mounted on the two braking belts.

Preferably, the hanging mechanism further comprises a hanging seat, and the top of the hanging seat is fixedly connected with the mounting plate; the hanging seat and the lifting lugs are respectively provided with a hook, one end of the hanging spring is connected with the hook on the hanging seat, and the other end of the hanging spring is connected with the hook on the lifting lug; the bottom of the hanging seat is provided with two vertical guide grooves, and the two lifting lugs are respectively embedded in the two guide grooves.

The sliding pair consisting of the lifting lug and the guide groove can prevent the two groups of parallel brake belts from moving left and right to generate interference in the moving process.

Due to the adoption of the technical scheme, compared with the prior art, the width B of the braking belt is increased and the specific pressure is reduced by arranging a plurality of braking belts in parallel, so that the requirement of a vehicle on a large braking force on an oversized ramp is met, an overlarge installation space is not occupied, and the occupied volume of the whole belt type braking device is reduced. On the other hand, because a plurality of brake belts are arranged, the brake belts are not easy to be tightly attached to the brake drum due to the fact that the width of a single belt is too wide, and heat dissipation of the friction pair is not influenced. Furthermore, the balance assembly is arranged between the spring and the lever arm, when the spring tension at the two ends of the joint rod is unbalanced, the joint rod rotates around the axis of the third hinge piece, so that the balance of the output force of the spring is realized, meanwhile, the brake rod is linked to realize the balanced transmission and output of the braking force, the equal gap of the brake pad when the braking is relieved is ensured, the structure is compact, and the brake rod is suitable for the limited installation space of the train walking part. On the other hand, when the brake pad gap is not uniform, the balance component can perform uniform adjustment of the brake pad gap under the action of the tension of the spring.

Drawings

FIG. 1 is a schematic view of the connection of the band brake of the present invention to the bogie frame of a conventional rack-and-pinion vehicle;

FIG. 2 is a schematic structural view of the band brake apparatus of the present invention;

FIG. 3 is a front view of the band brake of the present invention;

FIG. 4 is a top view of FIG. 3;

FIG. 5 is a schematic structural view of a suspension mechanism in the band brake apparatus of the present invention;

FIG. 6 is a schematic structural view of a balance assembly of the band brake apparatus according to the present invention;

FIG. 7 is a schematic view showing the construction of a brake band in the band brake apparatus according to the present invention;

FIG. 8 is a schematic structural view of a brake lever of the band brake apparatus of the present invention;

FIG. 9 is a cross-sectional view A-A of FIG. 8;

FIG. 10 is a schematic view of the structure of a spring in the band brake apparatus according to the present invention;

fig. 11 is a sectional view taken along line B-B of fig. 10.

In the figure: the brake drum comprises a brake drum 1, a mounting plate 2, a first bolt 21, a mounting support 22, a first hinge hole 221, a second hinge hole 222, a brake band 3, a spring 4, a spring mounting pin 41, a release brake cylinder 5, a Y joint 51, a rubber joint 52, a second bolt 53, a lever arm 61, a brake rod 62, a connector 63, a mounting sleeve 64, a crank arm 65, a first hinge 71, a second hinge 72, a joint seat 81, a joint rod 82, an adjusting screw 821, a third hinge 83, a brake pad clearance indicating screw 9, a third bolt 91, a positioning pin 92, a stopper 93, a hanging seat 10, a fourth bolt 101, a guide groove 102, a hanging spring 11 and a hanging lug 12.

Detailed Description

The present invention is described in further detail below with reference to the attached drawing figures.

As shown in fig. 1 and 4, a belt brake device which can be directly mounted on a bogie frame of an existing rack-and-pinion vehicle; the bogie frame is provided with mounting holes, and the mounting plate 2 is mounted on the bogie frame through the first bolts 21 and the mounting holes. The bogie frame comprises a mounting support 22, and a first hinge hole 221 and a second hinge hole 222 are arranged on the mounting support 22.

As shown in fig. 2 and 3, the band brake device includes a brake drum 1, two brake bands 3, two springs 4, a release brake cylinder 5, and a transmission mechanism, where the two brake bands 3 are sleeved on the brake drum 1 in parallel.

As shown in fig. 1 to 4, the transmission mechanism includes a lever arm 61 and a brake lever 62, and one end of the lever arm 61 is provided with a first hinge 71, and the other end is hinged to the first hinge hole 221 to form a first rotating pair. As shown in fig. 3 and 4, the Y-joint 51 on the relieving brake cylinder 5 is hinged to the first hinge 71, the end CA mount of the relieving brake cylinder 5 is fixed on the mounting plate 2 through the rubber joint 52, and the LB mount at the other end is fixed on the threaded hole on the bogie frame through the second bolt 53.

As shown in fig. 4, a second hinge member 72 is disposed between the first hinge member 71 and the first hinge hole 221; the two springs 4 are arranged, a balance assembly is arranged between the two springs 4 and the second hinge part 72, the balance assembly comprises a joint seat 81 and a joint rod 82, one end of the joint seat 81 is hinged to the second hinge part 72, the other end of the joint seat 81 is vertically provided with a third hinge part 83, the middle of the joint rod 82 is hinged to the third hinge part 83, through holes are formed in the two ends of the joint rod 82 along the length direction of the springs, adjusting screw rods 821 are arranged in the through holes, the two springs 4 are respectively connected with the two ends of the joint rod 82 through the adjusting screw rods 821, and the other ends of the springs 4 are mounted on the mounting plate 2 through spring mounting pins 41.

As shown in fig. 2 and 3, the brake levers 62 are provided in two; the connecting heads 63 at one ends of the two brake levers 62 are respectively rotatably connected with two ends of the joint rod 82, the other ends of the two brake levers 62 are respectively provided with a hinge hole, and the mounting sleeve 64 penetrates through the two hinge holes to rotatably connect the two brake levers 62 with the second hinge hole 222, so as to form a second revolute pair. Crank arms 65 are arranged at the two hinge holes, and two ends of the crank arms 65 are respectively connected with two ends of the two brake belts 3.

As shown in fig. 4, a brake pad clearance indication screw 9 is further disposed between the release brake cylinder 5 and the lever arm 61, one end of the brake pad clearance indication screw 9 is fixedly mounted on the release brake cylinder 5 through a third bolt 91, and the other end is provided with a positioning pin 92; one end of the lever arm 61 is provided with a stop head 93 which is matched with the positioning pin 92.

As shown in fig. 3, 4 and 5, a hanging mechanism is further disposed between the braking band 3 and the mounting plate 2, the hanging mechanism includes a hanging seat 10, two sets of hanging springs 11 and two lifting lugs 12 respectively mounted on the two braking bands 3, the top of the hanging seat 10 is mounted on the mounting plate 2 through a fourth bolt 101, the hanging seat 10 and the lifting lugs 12 are both provided with hooks, one end of each hanging spring 11 is connected with the hook on the hanging seat 10, and the other end is connected with the hook on the lifting lug 12; the bottom of the hanging seat 10 is provided with two vertical guide grooves 102, and the two lifting lugs 12 are respectively embedded in the two guide grooves 102.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.