WO2017076339A1

WO2017076339A1 - Lever mechanism and brake clamp device comprising same

Info

Publication number: WO2017076339A1
Application number: PCT/CN2016/104635
Authority: WO
Inventors: 雷国伟; 苟青炳; 王睿文; 朱君华; 曾梁彬; 韩红文; 伍安旭; 霍伟; 梅桌民
Original assignee: 中车戚墅堰机车车辆工艺研究所有限公司; 常州中车铁马科技实业有限公司
Priority date: 2015-11-05
Filing date: 2016-11-04
Publication date: 2017-05-11
Also published as: CN108463645A; CN108463645B

Abstract

A lever mechanism (3) and a brake clamp device comprising same. The lever mechanism (3) comprises a lever body (3-1), the lever body (3-1) being mounted on a housing (1) of a brake clamp device pivotally. Moreover, the lever mechanism (3) further comprises: an ejection block assembly (23) mounted pivotally relative to the lever body (3-1) on a first end, corresponding to an output shaft of a brake cylinder (2) of the brake clamp device, of the lever body (3-1), the ejection block assembly (23) being, at least, used for keeping in fit with the output shaft of the brake cylinder (2). The lever mechanism (3) is high in transfer efficiency of a brake force output by the output shaft of the brake cylinder (2).

Description

Lever mechanism and brake clamp device including the same

Technical field

The invention belongs to the technical field of braking and relates to a brake clamping device, in particular to a lever mechanism used on a brake clamping device of a rail vehicle.

Background technique

The brake caliper device is a key component for providing braking for a vehicle, and is widely applied to a rail vehicle. The basic working principle is that the output shaft of the brake cylinder outputs a braking force acting on one end of the lever mechanism, thereby The other end of the lever mechanism is rotated toward the brake disc and acts on the brake pad to generate a brake. Therefore, the main action of the lever mechanism transmits the braking force.

The lever mechanism of the existing brake caliper device is generally constituted by only one lever body, and the Applicant has found that the lever mechanism of the existing brake caliper device has at least one of the following problems:

(1) In actual operation, the contact area and the contact angle of one end of the lever mechanism with the output shaft of the brake cylinder are changed with the jacking of the output shaft of the brake cylinder, so that the efficiency of the lever mechanism transmitting the braking force is low;

(2) At work, the end of the lever mechanism that is in contact with the output shaft of the brake cylinder is frequently subjected to the impact of the output shaft of the brake cylinder, which is extremely easy to wear. At the same time, the other end of the lever mechanism is in direct contact with the brake pad, which is also easy. Wear and maintenance, the entire lever body needs to be replaced during maintenance, which greatly increases maintenance costs;

(3) When a problem occurs inside the brake cylinder such as the clamp device and manual relief is required, the entire lever mechanism must be removed, which is inconvenient to operate.

Summary of the invention

In order to solve at least one aspect or other technical problems of the above technical problems, the present invention provides the following technical solutions:

According to an aspect of the invention, there is provided a lever mechanism (3) comprising a lever body (3-1), wherein the lever body (3-1) is pivotally mounted to a housing of a brake caliper device (1) above; characterized in that the lever mechanism (3) further comprises:

The first end of the lever body (3-1) is pivotally mounted relative to the lever body (3-1) corresponding to the output shaft of the brake cylinder (2) of the brake caliper device Top block Component (23);

Wherein, the top block assembly (23) is at least used to maintain abutment with the output shaft of the brake cylinder (2).

According to still another aspect of the present invention, there is provided a brake caliper device comprising a housing (1), a brake cylinder (2), and a lever mechanism (3) as described above.

The above features, operations, and corresponding effects of the present invention will become more apparent from the description and accompanying drawings.

DRAWINGS

The above and other objects and advantages of the present invention will be more fully understood from the aspects of the appended claims.

1 is a perspective view showing the structure of a brake caliper device according to an embodiment of the present invention.

Figure 2 is a front elevational view of the brake caliper apparatus of the embodiment of Figure 1.

Figure 3 is a left side elevational view of the brake caliper assembly of the embodiment of Figure 1.

Figure 4 is a plan view of the brake caliper device of the embodiment of Figure 1.

Fig. 5 is a perspective view showing the housing of the brake caliper device of the embodiment shown in Fig. 1.

Fig. 6 is a perspective view showing the structure of a lever mechanism according to an embodiment of the present invention, which is used in the brake caliper device of the embodiment shown in Fig. 1.

Figure 7 is a front elevational view of the lever mechanism of the embodiment of Figure 6.

Figure 8 is a cross-sectional view taken along line A-A of the lever mechanism of Figure 7;

Figure 9 is a perspective view showing the structure of the lever body in the lever mechanism of the embodiment shown in Figure 7.

Figure 10 is a side cross-sectional view of the top block assembly in the lever mechanism of the embodiment of Figure 7.

11 to FIG. 13 is a top block body of a top block assembly in the lever mechanism of the embodiment shown in FIG. 7, wherein FIG. 11 is a perspective structural view of the top block body, FIG. 12 is a front view of the top block body, and FIG. A cross-sectional view of the top block body.

14 to 15 are fixed screw plugs of the top block assembly in the lever mechanism of the embodiment shown in Fig. 7, wherein Fig. 14 is a side sectional view of the fixed screw plug, and Fig. 15 is a front view of the fixed screw plug.

Figure 16 is a front elevational view of the block of the top block assembly in the lever mechanism of the embodiment shown in Figure 7.

17 to 18 are spacers in the lever mechanism of the embodiment shown in Fig. 7, wherein Fig. 17 is a front view of the spacer, and Fig. 18 is a side view of the spacer.

Figure 19 is a cross-sectional view of a boom mechanism for use in the brake caliper apparatus of the embodiment of Figure 1 in accordance with an embodiment of the present invention.

Figure 20 is a cross-sectional structural view showing the first rod end joint bearing in the boom mechanism of the embodiment shown in Figure 19.

Figure 21 is a cross-sectional structural view showing a second rod end joint bearing in the boom mechanism of the embodiment shown in Figure 19.

Figure 22 is a cross-sectional view of a support pin mechanism for use in the brake caliper apparatus of the embodiment of Figure 1 in accordance with an embodiment of the present invention.

Figure 23 is a schematic view showing the assembly of the anti-vibration rubber ring in the support pin mechanism of the embodiment shown in Figure 22.

detailed description

The following is a description of some of the various possible embodiments of the invention, which are intended to provide a basic understanding of the invention and are not intended to identify key or critical elements of the invention or the scope of the invention. It is to be understood that, in accordance with the technical aspects of the present invention, those skilled in the art can suggest other alternatives that are interchangeable without departing from the spirit of the invention. Therefore, the following detailed description and the accompanying drawings are merely illustrative of the embodiments of the invention, and are not intended to

In the description, components of various embodiments described using directional terminology (e.g., "left", "right", etc.) and similar terms are used to refer to the directions shown in the drawings or to those skilled in the art. These directional terms are used for relative description and clarification, and are not intended to limit the orientation of any embodiment to a particular orientation or orientation, which may occur accordingly as the orientation of the component being placed or installed changes. Variety.

1 is a perspective view showing the structure of a brake caliper device according to an embodiment of the present invention. The brake caliper device of the embodiment of the present invention is a rail vehicle brake caliper device for a basic brake of a rail vehicle, which clamps a brake disc (not shown) during operation to generate a braking force, In turn, brake friction is generated. The brake caliper device illustrated in the figures may be, but is not limited to, a hydraulically passive brake caliper.

As shown in conjunction with FIGS. 1 to 5, the brake caliper device of the embodiment of the present invention mainly includes The housing 1, the brake cylinder 2 and the lever mechanism 3, and also includes a boom mechanism 5 and a support pin mechanism 9 for clamping devices mounted on the rail vehicle with respect to the brake disc.

Specifically, as shown in FIG. 5, the housing 1 is the body of the brake caliper device, and the brake cylinder 2 (for example, a cylinder) is disposed on the housing 1, and the internal structure thereof is not limited, and the brake cylinder 2 is not limited. The force acting on the brake disc required to output the brake, ie the "braking force". Generally, the braking force is externally outputted through the output shaft provided in the brake cylinder 2. Wherein, the housing 1 is used as the cylinder of the brake cylinder 2, so that the volume of the brake caliper device is greatly reduced, the structure of the brake caliper device is more compact, and the strength and rigidity of the brake cylinder 2 are higher. To make the brake clip device more reliable.

The braking force outputted by the brake cylinder 2 is transmitted to the brake pad through the lever mechanism 3, and the brake pad is pushed close to and acts on the brake disc, thereby generating a braking force to the brake disc. A pair of lever mounting holes 1-1 are disposed on the housing 1, and a central portion of the lever mechanism 3 is also correspondingly provided with a shaft hole 3-1-1 (as shown in FIG. 6-8); wherein the shaft hole in the middle of the lever mechanism 3 A rotary shaft 21 is mounted in 3-1-1, and the rotary shaft 21 passes through a lever mounting hole 1-1 (shown in FIG. 1) on the housing 1, so that the lever mechanism 3 can be hinged to the housing 1. . When the braking force of the brake cylinder 2 is externally applied to the first end of the lever mechanism 3, the lever mechanism 3 can be rotated integrally around the rotating shaft 21 within a certain angle range, so that the second end of the lever mechanism 3 is opposite to each other. The surface of the moving plate moves to be pressed against the corresponding brake pad 22 of the brake disc, thereby generating a braking force. The magnitude of the braking force can be determined by the amount of force output from the brake cylinder 2.

The housing 1 is further provided with a support pin mounting hole 1-2 (shown in FIG. 5) for mounting the support pin mechanism 9 as shown in FIG. 22, for example, the support pin mounting hole 1-2 is inserted. The support pin 4 is mounted so that the brake caliper device can be mounted on the bogie of the rail vehicle and pivoted relative to the support pin 4. On the other hand, the housing 1 is further provided with a boom mounting hole 1-4 (as shown in FIG. 5), and the first bolt 6 of the boom mechanism 5 is mounted on the boom mounting hole 1-4, thereby hoisting The first end of the lever mechanism 5 is mounted on the housing 1 (as shown in Figures 1-3) while the second end of the boom mechanism 5 is slinged to the bogie of the rail vehicle. In this way, the boom mechanism 5 and the support pin mechanism 9 can fix the brake clamp device to the bogie, so that the second end of the lever mechanism 3 can act indirectly on the brake disc (for example, by the brake disc 22). The drive plate is placed in good contact with the brake disc 22).

Specifically, the housing 1 is further provided with a shutter mounting hole 1-3. As shown in FIGS. 1 and 2, the shutter 22 is mounted on the housing 1 by the shutter pin 22 on the shutter 22. -1 passes through the shutter mounting hole 1-3 on the housing 1 to connect the shutter 22 to the housing 1.

The lever mechanism 3 of the embodiment of the present invention will be described below with further reference to Figs. 6 to 17 .

In an embodiment, the lever mechanism 3 mainly comprises a lever body 3-1 and a top block assembly 23 disposed at a first end of the lever body 3-1 corresponding to an output shaft of the brake cylinder 1. Specifically, as shown in FIG. 9, the middle portion of the lever body 3-1 is provided with a shaft hole 3-1-1, and the shaft hole 3-1-1 can be, but is not limited to, two bushings 3-1-3, the lever body The first end of 3-1 (i.e., the end corresponding to the output shaft of the brake cylinder 1) has a pair of connecting arms 3-1-2, and the top block assembly 23 is in the position of two oppositely disposed connecting arms 3-1-2. Each of the connecting arms 3-1-2 is provided with a mounting groove 27 for pivotal connection of the two connecting arms 3-1-2 and the top block assembly 23, and two oppositely disposed connecting arms The space between 3-1-2 is used to accommodate the body portion of the top block assembly 23, thereby ensuring that the end face of the output shaft of the brake cylinder can act on the first end of the lever mechanism with a maximum contact area. The second end of the lever body 3-1 (i.e., corresponding to one end of the brake pad and the brake disc) is used to mount the spacer 28 as shown in Figures 17-18. Among them, the spacer 28 can be in contact with the back plate on which the shutter is mounted during braking.

In an embodiment, the top block assembly 23 of the lever mechanism 3 has a top block body 23-1. Considering the pivoting characteristic of the lever mechanism 3, the end surface of the output shaft of the brake cylinder in the prior art is easily formed at an angle with the acting surface of the first end of the lever mechanism, so that the end surface of the output shaft of the brake cylinder is not The maximum contact area acts on the first end of the lever mechanism, affecting the transmission efficiency of the force and also affecting the braking efficiency. To this end, the top block body 23-1 is arranged to be pivotally mounted on the first end of the lever mechanism 3 such that the end piece assembly 23 and the end face of the output shaft of the brake cylinder 2 are well retained. Hehe.

Specifically, as shown in FIGS. 11-13, the top block body 23-1 may be substantially configured as an annular body having two coaxial connecting shafts 23-1-1 disposed radially, and connecting the shafts 23-1-1. It is attached or integrally formed with the top block body 23-1, and is located on the outer wall of the top block body 23-1 (that is, convexly disposed opposite to the top block body 23-1).

In an embodiment, the two connecting shafts 23-1-1 are symmetrically arranged on the two planes 23-2 of the top block body 23, and the axes of the two connecting shafts 23-1-1 and the mounting holes 23-1- The axis of 3 is perpendicular; each connecting shaft 23-1-1 may specifically have a cylindrical shape. In still another embodiment, the outer wall of the front end of the top block body 23-1 has an annular groove 23-5 and an end flange 23-3.

As shown in FIGS. 7 and 9, the connecting shaft 23-1-1 of the top block assembly 23 can be snapped onto the mounting groove 27 of the connecting arm 3-1-2 and hinged, and the connecting shaft 23-1 of the top block assembly 23 is attached. -1 can be pivoted in the mounting slot 27, this connection saves space to the greatest extent, making the lever mechanism 3 smaller, which makes it possible to miniaturize the brake caliper; moreover, the top block assembly 23 It can rotate based on the central axis of the connecting shaft 23-1-1, and the pressure block 26 on the top block assembly 23 always maintains the largest area contact with the output shaft of the brake cylinder 2 when the hydraulic brake clamp operates (ie, the maximum fit area) ), effectively improving the efficiency of the transmission force and improving the braking efficiency.

Further, as shown in FIG. 10-13, the top block body 23-1 is provided with mounting holes 23-1-3, and the mounting holes 23-1-3 are used for mounting the fixing screw 25 (as shown in FIG. 14-15). And corresponding pressure block 26. The axis of the mounting hole 23-1-3 is perpendicular to the axis of the connecting shaft 23-1-1.

In order to realize the installation of the fixing screw 25 in the mounting hole 23-1-3, in an embodiment, the top block body 23-1 is further provided with a positioning hole 23-1-2 disposed radially, wherein the positioning hole 23 -1-2 is located on the boss 23-6 on the outer wall of the top block body 23-1, and the outer peripheral wall of the fixed screw plug 25 is provided with a circumferential limiting groove 25-1, and the mounting hole 23-1-3 With an internal thread, the fixed screw plug 25 is provided with an external thread and cooperates with the internal thread in the mounting hole 23-1-3. When the fixing screw 25 is installed, the front portion of the fixing screw 25 is screwed to the internal thread of the mounting hole 23-1-3, and one end of the limiting screw 24 is screwed into the positioning hole 23-1-2 and screwed thereto. It extends into the circumferential limit groove 25-1 to limit the fixed screw block 25. The fixed screw plug 25 is fixed in the mounting hole 23-1-3 during normal operation.

Further, as shown in FIG. 10-15, the front end surface of the fixed screw plug 25 has a counterbore 25-3, and the counterbore 25-3 is provided with a pressing block 26, which is an output shaft facing the brake cylinder 2. Installed, and during braking, the output shaft of the brake cylinder 2 in the brake caliper device is always directly applied to the pressure block 26 of the lever mechanism 3, and therefore, the pressure block 26 is a wearable part. In the structure of the embodiment of the present invention, the pressing block 26 is detachably disposed with respect to the top block body 23-1 or the lever mechanism 3. When the pressing block 26 is worn, it is only necessary to separately replace the pressing block 26, which is advantageous in cost saving.

Specifically, as shown in FIG. 16, the pressing block 26 has a vent hole 26-1. The pressing block 26 has an interference fit with the counterbore 25-3 of the fixing screw block 25. The vent hole 26-1 facilitates the elimination of the countersink when the pressing block 26 is mounted. The air inside 25-3. The pressure block 26 is further provided with a slit 26-2. The pressure block 26 is interference-fitted with the counterbore 25-3 of the fixed screw plug 25, and the gap 26-2 is convenient for eliminating the counterbore 5-3 when the clamp 26 is installed. The air, on the other hand, is more easily removed from the counterbore 25-3 of the fixed plug 25 when the compact 26 is replaced. Here, the vent hole 26-1 and the spigot 26-2 have an exhaust function, and only one of them may be used or both. It should be noted that, in the above embodiment, the fixed screw plug 25 and the pressure block 26 constitute a braking force transmitting member, and the braking force output from the output shaft of the brake cylinder 2 is transmitted to the lever mechanism 3 through the braking force transmitting member. .

As shown in FIG. 10-15, the rear end surface of the fixing screw block 25 has a hexagonal counterbore 25-2. In still another alternative embodiment, the hexagon socket counterbore 25-2 may also be provided as an outer hexagonal protrusion. Since the fixed screw plug 25 has a hexagonal counterbore 25-2 or a hexagonal protrusion, it is not necessary to use a special tool when installing or removing the fixing screw plug 25, and the loading and unloading can be completed by using a universal tool, which is convenient and quick.

In the embodiment, the outer peripheral wall of the rear end portion of the fixing screw plug 25 is provided with an annular seal groove 25-4, and the annular seal groove 25-4 is provided with an annular seal ring, and the rear end of the outer peripheral wall of the fixed screw plug 5 is provided. There is an annular stop 25-5; correspondingly, the rear end opening of the mounting hole 23-1-3 of the top block body 3-1 has an annular stop 23-4 corresponding to the annular stop 25-5. In this way, the sealing ring can be conveniently placed and the dustproof effect is achieved by the sealing.

Since the top block body 23-1 is pivotally disposed relative to the lever mechanism 3, thus, not only as described above, the end face of the output shaft of the brake cylinder 2 can be better pressed from the clamp block on the top block body 23-1 from start to finish. 26 engagement, when the hydraulic brake clamp works, the pressure block 26 on the top block assembly 23 and the output shaft of the brake cylinder 2 always maintain the maximum area contact (ie, the maximum fit area), thereby effectively improving the efficiency of the transmission force and improving Braking efficiency.

Moreover, in the event of a failure that the brake caliper device cannot be automatically returned during the braking process and cannot be alleviated, the overall pivotable setting of the top block assembly 23 can be manually relieved by detaching the fixed screw plug 25 . For example, the limit screw 24 can be disassembled and assembled, and the fixed screw plug 25 can be detached from the mounting hole 23-1-3 by the hexagonal counterbore 25-2, so that the output shaft of the brake cylinder 2 is no longer blocked by the top block. Component 23 is limited to achieve manual mitigation. The above mitigation process can be realized on the lever mechanism 3, and the operation is simple and convenient, which is completely different from the manual mitigation from the inside of the brake cylinder 2 in the prior art.

It should be noted that, when the press block 26 described above is replaced and replaced, the fixed screw plug 25 can be removed by the above manual mitigation method, and the replacement of the mounting block 26 is also convenient and simple.

Continuing with Figures 7 and 8, in one embodiment, the second end of the lever mechanism 3 is provided with a spacer 28 that is detachably mountable. During operation of the brake caliper device, the spacer 28 is in continuous contact on the brake pad 22 and, therefore, is subject to wear and needs to be replaced. In the prior art, it is necessary to achieve by integrally replacing the lever body 3-1 of the lever mechanism 3. In this embodiment, the spacer 28 is specifically provided with a threaded hole 28-1 (shown in FIG. 17) so as to be detachably mountable to the second end of the lever mechanism 3 by screwing. When the spacer 28 is worn, the mounting spacer 28 can be replaced, which greatly reduces maintenance costs.

Continuing with Figures 1-3, a boom mechanism 5 is also hinged to the housing 1. In an embodiment The boom mechanism 5 is disposed in the manner shown in Figures 19-21, and the boom mechanism 5 includes a first bolt 6, a first rod end joint bearing 7, a second rod end joint bearing 8 and a second bolt 13; The first end of the first rod end joint bearing 7 has a first spherical bearing 7-1, and the first end of the second rod end joint bearing 8 has a second spherical bearing 8-1, and the first rod end joint bearing 7 The second end is screwed to the second end of the second rod end joint bearing 8; wherein the first bolt 6 is connected to the first rod end joint bearing 7 through the first spherical bearing 7-1, and the boom mechanism 5 passes the first bolt 6 It is connected to the housing 1.

Further, the boom mechanism 5 further includes a first inner bushing 7-2, a first outer bushing 7-3 and a first slotted nut 7-4. The middle portion of the first bolt 6 is connected to the first spherical bearing 7-1. A first inner bushing 7-2 is mounted, and a first outer bushing 7-3 is mounted on each side of the middle portion of the first bolt 6, and a first slotted nut 7-4 is mounted on the threaded end of the first bolt 6.

Further, the second bolt 13 is connected to the second rod end joint bearing 8 through the second spherical bearing 8-1, and the boom mechanism 5 may further include a second bolt 13, a second inner bush 8-2, and a second outer bushing. 8-3 and second slotted nut 8-4. a second inner bushing 8-2 is disposed at a joint of a middle portion of the second bolt 13 and the second spherical bearing 8-1, and a second outer bushing 8-3 is disposed on each side of the middle portion of the second bolt 13 A second slotted nut 8-4 is mounted on the threaded end of the bolt 13. The boom mechanism 5 is connected to the vehicle by a second bolt 13.

The first inner bushing 7-2, the first outer bushing 7-3, the second inner bushing 8-2 and the second outer bushing 8-3 provided above can effectively protect the parts and protect the bolts. Improve the role of bearer and reliability.

In an embodiment, as shown in FIG. 21 and FIG. 22, the second end of the first rod end joint bearing 7 (ie, the end corresponding to the second rod end joint bearing 8) is an internally threaded sleeve, and the second rod end joint bearing The second end of the 8 (ie, the end corresponding to the first rod end joint bearing 7) is an externally threaded rod, and the internally threaded sleeve of the first rod end joint bearing 7 can be screwed with the externally threaded rod of the second rod end joint bearing 8.

Further, the boom mechanism 5 further includes a butterfly washer 14 and a set nut 15 that mounts a threaded joint of the second end of the first rod end joint bearing 7 and the second end of the second rod end joint bearing 8, wherein The butterfly washer 14 is fitted on the externally threaded rod of the second rod end joint bearing 8, and one side axially abuts against the inner threaded sleeve of the first rod end joint bearing 7, and the other side passes through the second rod end joint bearing The tightening nut 15 of the externally threaded rod of 8 is tightened. With the butterfly washer 14 and the set nut 15, the threaded connection between the second end of the first rod end joint bearing 7 and the second end of the second rod end joint bearing 8 can be tightened and is not easy Loose.

Continuing with Figures 1-3, a support pin mechanism 9 is also hinged to the housing 1. In an embodiment, the support pin mechanism 9 is disposed in the manner shown in Figures 22-23. As shown in Figures 23 and 4, the support pin mechanism 9 includes an anti-vibration rubber ring 10, a liner 11, a bushing 12, and support. The pin 4, the anti-vibration rubber ring 10 is mounted in the support pin mounting hole 1-2 of the housing 1, the liner 11 is mounted in the anti-vibration rubber ring 10, the liner 11 is provided with a bushing 12, and the support pin 4 is passed through the bushing 12. Of course, in other embodiments, the bushing 12 may not be provided in the liner 11, and the support pin 4 may be directly passed through the liner 11. The specific material of the anti-vibration rubber ring 10 is not limited to a rubber material, and for example, other rubber-like elastic materials may also be used.

In the brake caliper device of the above embodiment, since the boom mechanism 5 and the support pin mechanism 9 with the anti-vibration rubber ring 10 are employed, the brake caliper device as a whole can be well adapted to the steering wheel pair of the vehicle during operation. The horizontal yaw generated ensures stable transmission efficiency of the braking force, is not easy to cause eccentric wear failure, greatly improves the safety of the vehicle, and at the same time plays a role in relieving the brake shock.

Further, as shown in FIG. 22, the support pin mechanism 9 further includes a disc spring 16, a first support pin bushing 17, a second support pin bushing 18, and a pin cover 19, the first end of the support pin 4 being first set The pin bushing 17 is supported, the second end of the support pin 4 is provided with a second support pin bushing 18, and the second support pin bushing 18 has an internally threaded hole 18-1 through which the pin cover 19 is passed. -1 is screwed to the second support pin bushing 18. A disc spring 16 is disposed between the pin cover 19 and the support pin 4.

Further, as shown in FIG. 22, the support pin mechanism 9 further includes a first bellows 20 and a second bellows 20', each of which is fitted to the outer periphery of the end of the support pin 4. Wherein the first end of the first bellows 20 is coupled to the first support pin bushing 17, the second end of the first bellows 20 is coupled to the housing 1, and the first end and the second end of the second bellows 20' The support pin bushing 18 is connected, and the second end of the second bellows 20' is connected to the housing 1. Both the first bellows 20 and the second bellows 20' can function as a dustproof.

The brake caliper device of the above embodiment has a compact overall structure and is particularly suitable for use on a low-floor rail vehicle (for example, a tram), but it should be understood that it can also be applied to other types of rail vehicles such as magnetic levitation vehicles or the like. Type of vehicle (such as mining machinery engineering vehicles).

The above examples mainly illustrate the lever mechanism and the brake caliper device of various embodiments of the present invention. Although only some of the embodiments of the invention have been described, the art It will be appreciated by those skilled in the art that the present invention may be embodied in many other forms without departing from the spirit and scope of the invention. Accordingly, the present invention is to be construed as illustrative and not restrictive, and the invention may cover various modifications without departing from the spirit and scope of the invention as defined by the appended claims With replacement.

Claims

A lever mechanism (3) comprising a lever body (3-1), wherein the lever body (3-1) is pivotally mounted on a housing (1) of a brake caliper device; The lever mechanism (3) further includes:

The first end of the lever body (3-1) is pivotally mounted relative to the lever body (3-1) corresponding to the output shaft of the brake cylinder (2) of the brake caliper device Top block assembly (23);

Wherein, the top block assembly (23) is at least used to maintain abutment with the output shaft of the brake cylinder (2).
The lever mechanism (3) according to claim 1, wherein said top block assembly (23) comprises a top block body (23-1), said top block body (23-1) being pivotally mounted At the first end of the lever body (3-1), the top block assembly (23) is thereby rotatable integrally relative to the lever body (3-1).
The lever mechanism (3) according to claim 2, wherein the top block body (23-1) is further provided with mounting holes (23-1-3);

Wherein, the top block assembly (23) further comprises a braking force transmission member detachably fixedly mounted in the mounting hole (23-1-3), the brake cylinder of the brake clamping device (2) The output shaft directly acts on the surface of the braking force transmitting member and is capable of driving the top block assembly (23) to rotate to maintain a maximum contact area between the output shaft and the braking force transmitting member.
A lever mechanism (3) according to claim 3, wherein said brake force transmitting member comprises a fixed screw plug (25) detachably mounted in said mounting hole (23-1-3), and a compact (26) detachably mounted on the fixed plug (25);

Wherein the output shaft of the brake cylinder (2) of the brake caliper device acts directly on the pressure block (26) and is capable of driving the top block assembly (23) to rotate to cause the output shaft to The maximum contact area is maintained between the compacts (26).
A lever mechanism (3) according to claim 4, wherein a counterbore (25-3) is formed on a front end surface of said fixed screw plug (25), and said press block (26) is placed in said sink Hole (25-3).
A lever mechanism (3) according to claim 5, wherein said pressure block (26) having a vent (26-1) and/or a slit 26-2, wherein the clamp (26) is in an interference fit with the counterbore (25-3) of the fixed plug (25).
The lever mechanism (3) according to claim 4, wherein the mounting hole (23-1-3) is provided with an internal thread, and the fixing screw (25) is provided with an external thread, the external thread Cooperating with internal threads in the mounting holes (23-1-3).
The lever mechanism (3) according to claim 7, wherein the top block body (23-1) is provided with a radially disposed positioning hole (23-1-2), and the fixed screw plug ( 25) a limiting slot (25-1) is disposed on the outer peripheral wall, wherein the limiting screw (24) is fixedly mounted in the positioning hole (23-1-2) and one end extends into the limiting slot ( 25-1).
The lever mechanism (3) according to claim 7, characterized in that the rear end surface of the fixing screw (25) is provided with a hexagonal counterbore (25-2) or an outer hexagonal projection.
A lever mechanism (3) according to claim 2 or 3, characterized in that said two coaxial connecting shafts (23-1-1) are arranged radially, said connecting shafts (23-1- 1) It is integral with the top block body (23-1).
A lever mechanism (3) according to claim 10, wherein said two connecting shafts (23-1-1) are fitted to a pair of connecting arms of said lever body (3-1) (3- 1-2) and hinged on it.
The lever mechanism (3) according to claim 1 or 2 or 3, wherein the middle portion of the lever body (3-1) is also correspondingly provided with a shaft hole (3-1-1), the shaft hole Bushing (3-1-3) is provided in (3-1-1)
A lever mechanism (3) according to claim 11, wherein each of the connecting arms (3-1-2) is provided with a mounting groove (27), and each of said connecting shafts (23-1-1) The card is loaded into the mounting slot (27).
A lever mechanism (3) according to claim 1, characterized in that the second end of the lever body (3-1) is detachably mounted with a spacer (28).
A brake caliper device comprising a housing (1), a brake cylinder (2) and a lever mechanism (3) according to any one of claims 1 to 14.
A brake caliper device according to claim 15, further comprising a boom mechanism (5) and a support pin mechanism (9);

Wherein the housing (1) is provided with a support pin mounting hole (1-2) for at least hinged the support pin mechanism (9) on the housing (1); The anti-vibration elastic ring (10) is installed in the support pin mounting hole (1-2).
A brake caliper device according to claim 16, wherein said support pin mechanism (9) comprises a liner (11), a bushing (12) and a support pin (4), wherein said liner (11) Installed in the anti-vibration elastic ring (10), the liner (11) is provided with a bushing (12) through which the support pin 4 passes.
A brake caliper device according to claim 17, wherein said support pin mechanism (9) further comprises a first support pin bushing (17) and a second support pin bushing (18),

Wherein, the first end of the support pin (4) is provided with a first support pin bushing (17), and the second end of the support pin (4) is fitted with the second support pin bushing (18).
A brake caliper device according to claim 18, wherein said support pin mechanism (9) further comprises a disc spring (16) and a pin cover (19);

Wherein the second support pin bushing 18 is provided with an internally threaded hole (18-1) through which the pin cover (19) passes through the internally threaded hole (18-1) and the second support pin The bushing (18) is screwed, and the disc spring (16) is mounted between the pin cover (19) and the support pin (4).
A brake caliper device according to claim 18, wherein said support pin mechanism (9) further comprises a first bellows (20) and a second bellows (20'), said first bellows Both (20) and the second bellows (20') are fitted around the outer circumferences of both ends of the support pin (4).
A brake caliper device according to claim 15 or 16, wherein the boom mechanism (5) comprises a first bolt (6), a first rod end joint bearing (7), and a second rod end joint Bearing (8) and second bolt (13);

Wherein the first end of the first rod end joint bearing (7) has a first spherical bearing (7-1), and the first end of the second rod end joint bearing (8) has a second spherical bearing (8) -1), the second end of the first rod end joint bearing (7) is screwed to the second end of the second rod end joint bearing (8);

The first bolt (6) is connected to the first rod end joint bearing (7) through the first spherical bearing (7-1), and the boom mechanism (5) passes the first bolt (6) ) is connected to the housing (1);

The second bolt (13) is coupled to the second rod end joint bearing (8) by the second spherical bearing (8-1).
A brake caliper device according to claim 21, wherein said boom mechanism (5) further comprises a first inner bushing (7-2) and a first outer bushing (7-3), One bolt (6) a first inner bushing (7-2) is mounted at a joint between the middle portion and the first spherical bearing (7-1), and the first side of the first bolt (6) is provided with the first side An outer bushing (7-3).
A brake caliper device according to claim 21, wherein said boom mechanism (5) further comprises a second inner bushing (8-2) and a second outer bushing (8-3). The second inner bushing (8-2) is mounted at a joint between the middle portion of the second bolt (13) and the second spherical bearing (8-1), and the second middle portion of the second bolt (13) The second outer bushing (8-3) is mounted on each side.
A brake caliper device according to claim 22 or 23, wherein said first bolt (6) is provided with a first slotted nut (7-4) and said second bolt (13) is threaded. The second slotted nut (8-4) is mounted on the end.
A brake caliper device according to claim 15 or claim 16 wherein the brake caliper device is used for braking of a low floor rail vehicle.
A brake caliper device according to claim 15 or 16, wherein the brake caliper device is used for braking of a magnetic levitation vehicle.
A brake caliper device according to claim 15 or 16, wherein the brake caliper device is used for braking of a mining engineering vehicle.