CN102371989B - Emergency brake valve for electric locomotive - Google Patents
Emergency brake valve for electric locomotive Download PDFInfo
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- CN102371989B CN102371989B CN201010255301.0A CN201010255301A CN102371989B CN 102371989 B CN102371989 B CN 102371989B CN 201010255301 A CN201010255301 A CN 201010255301A CN 102371989 B CN102371989 B CN 102371989B
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- 229910001018 Cast iron Inorganic materials 0.000 claims description 6
- 230000008602 contraction Effects 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 claims description 5
- 238000010276 construction Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 4
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 abstract 2
- 230000000694 effects Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
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- 238000010297 mechanical methods and process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 230000035515 penetration Effects 0.000 description 1
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Abstract
The invention discloses an emergency brake valve for an electric locomotive, which comprises a valve body, a valve core and a driving device, wherein a mounting hole which is communicated with a gas channel is arranged on the side wall of the valve body; the valve core is arranged in the gas channel through the mounting hole; the axis of the valve core is orthogonal with that of the gas channel; the valve core is radially provided with a communicating hole which can be communicated or closed with the gas channel; the valve core respectively extends towards two ends along the axis of the valve core via the mounting hole to the outside of the valve body and forms two extending ends; one end of the valve core is fixedly connected with the driving device; the other extending end of the valve core is connected with an emergency brake signal generation device; the driving device can be used for driving the valve core to rotate; and when the valve core rotates to the communicating hole and is communicated with the gas channel, the valve core drives the emergency brake signal generation device to act and outputs an emergency brake signal to a locomotive control system. According to the emergency brake valve disclosed by the invention, the emergency brake signal can be transmitted to the locomotive control system in time; and in addition, the emergency brake valve has the advantages of higher strength, long maintenance period and low manufacturing cost.
Description
Technical Field
The invention relates to an emergency brake valve, in particular to an emergency brake valve with an emergency brake signal generating device switch assembly for an electric locomotive.
Background
An emergency brake valve is a widely used brake valve, especially for electric locomotives. The emergency brake valve for the electric locomotive has the function of starting an emergency brake system of the locomotive to force the running locomotive to adopt emergency braking, so that the locomotive is ensured to stop in the shortest time, and the driving accident caused by an emergency is effectively avoided. Therefore, the emergency brake valve has become one of the essential important parts on the electric locomotive.
When in use, the emergency brake valve can be designed into various models with different sizes and similar structures according to the specific requirements of different locomotive models. At present, emergency brake valves installed on electric locomotives are of pure mechanical structures and mainly comprise a valve body, a valve core and a handle, an axially through gas channel is arranged in the valve body, a mounting hole is formed in the side wall of the valve body and penetrates through the gas channel, and generally, the axis of the mounting hole is orthogonal to the axis of the gas channel. One end of the gas channel is provided with a gas inlet which is used for being connected with a brake main pipe of the locomotive; the other port is an air outlet and is communicated with the atmosphere. The valve core is arranged in the gas channel, and the axis of the valve core is orthogonal to the axis of the gas channel. An extending end of the valve core extends to the outside of the valve body through the mounting hole along the axis of the valve core, the extending end of the valve core is fixedly connected with the handle, the handle is rotated through external force to drive the valve core to rotate in the gas channel, and the axial direction of the through hole is the same as the axial direction of the valve body as the through hole is radially arranged on the valve core, so that the through hole and the gas channel alternately form a through or closed state along with the rotation of the valve core. When the through hole and the gas channel are in closed arrangement, the gas channel is locked, and the emergency brake valve is in a closed state; when the through hole and the gas channel are arranged in a penetrating mode, the gas channel is communicated, the emergency brake valve is in an opening state, at the moment, compressed air in the locomotive brake main pipe is led out to the atmosphere through the gas channel, the compressed air is rapidly decompressed, and the locomotive emergency brake system generates emergency brake action according to the exhaust brake principle. Therefore, the conventional emergency brake valve controls the penetration and the closure of a gas channel of the emergency brake valve by rotating the valve core, so that the emergency brake valve is controlled to be opened and closed, and the emergency brake effect is realized.
Although the emergency brake valve for the electric locomotive has the advantages of simple structure and convenient operation, the emergency brake valve has some defects in structure:
1. although the existing emergency brake valve can realize the effect of emergency braking and stopping, the emergency brake valve cannot transmit the information of emergency braking of the locomotive to a locomotive control system in time after the emergency brake valve acts, so that the command of an operator is wrong, the wrong operation is caused, the equipment is damaged, and even an accident is caused.
2. The valve body of the existing emergency brake valve is made of stainless steel materials, the valve body is low in strength, short in maintenance period and high in manufacturing cost.
Disclosure of Invention
The invention provides an emergency brake valve for an electric locomotive, which can transmit an emergency brake signal to a locomotive control system in time and has the advantages of higher strength, long maintenance period and low manufacturing cost.
In order to achieve the purpose, the emergency brake valve for the electric locomotive comprises a valve body, a valve core and a driving device, wherein an axially through gas channel is arranged in the valve body, a mounting hole which penetrates through the gas channel is formed in the side wall of the valve body, the valve core is arranged in the gas channel through the mounting hole, the axis of the valve core is orthogonal to the axis of the gas channel, a through hole which can be communicated or sealed with the gas channel is radially formed in the valve core, the valve core extends to the outer part of the valve body from two ends to form two extending ends along the axis of the valve core through the mounting hole respectively, one extending end of the valve core is fixedly connected with the driving device, and the other extending end of the valve core is connected with an emergency brake signal generating device; the driving device can drive the valve core to rotate, and when the valve core rotates to the through hole and is communicated with the gas channel, the valve core drives the emergency braking signal generating device to act and outputs an emergency braking signal to a locomotive control system.
The emergency brake valve for the electric locomotive comprises a pressure switch and a rotating part, wherein the rotating part is connected with the extending end of the valve core, the pressure switch is arranged on the outer side of the outline of the rotating part, the pressure switch comprises a shell and a transmission mechanism, the shell is connected with the valve body through a connecting piece, the transmission mechanism is arranged between the shell and the rotating part, the rotating part is driven to rotate through the valve core, and the on-off of an electric connecting sheet in the shell is controlled through the transmission mechanism so as to output an emergency brake signal to a locomotive control system.
The emergency brake valve for the electric locomotive comprises a shell, a rotating part, a transmission mechanism and a spring, wherein the rotating part is a disc wheel, the transmission mechanism comprises a support, a connecting rod, a rotating wheel and the spring, the support is fixedly arranged on the end surface of one side, facing the disc wheel, of the shell, one end of the connecting rod is hinged to the support, the other end of the connecting rod is pivoted with the rotating wheel, the rotating wheel can be in rolling contact with the disc wheel, at least one groove capable of containing the rotating wheel is formed in the outer edge of the disc wheel, one end of the spring is fixedly connected to the connecting rod and extends into the shell, and the on-off of an electric connecting sheet in the shell is controlled through the extension and contraction of the spring so as to output an emergency brake.
The emergency brake valve for the electric locomotive is characterized in that the disc wheel is provided with two grooves, and the two grooves are symmetrically arranged along the central line of the disc wheel.
The emergency brake valve for the electric locomotive comprises a rotating part, a valve core, a transmission mechanism, a support, a rotating wheel and a spring, wherein the rotating part is a cam, the cam is connected with the extending end of the valve core, the support is fixedly arranged on the end surface of the shell facing one side of the cam, one end of the connecting rod is hinged with the support, the other end of the connecting rod is pivoted with the rotating wheel, the cam can be in rolling contact with the rotating wheel, one end of the spring is fixedly connected with the connecting rod and extends into the shell, and the on-off of an electric connecting sheet in the shell is controlled through the expansion and contraction of the spring so as to output an emergency brake signal to a locomotive control system.
The emergency brake valve for an electric locomotive as described above, wherein a protective cover is provided outside the housing.
The emergency brake valve for the electric locomotive is characterized in that end covers are respectively arranged at two sides of the valve body and at two extending ends corresponding to the valve core, the end covers are fixed on the valve body through bolts, the two extending ends of the valve core respectively penetrate through the corresponding end covers, and sealing rings are respectively arranged between the end covers and the valve core.
The emergency brake valve for the electric locomotive is characterized in that the driving device is an L-shaped handle, one end of the L-shaped handle penetrates through and is fixed on the extending end on one side of the valve core and extends to the outer side of the extending end to form a protruding part, a stop part is arranged on the end cover on one side of the handle, the stop part is an annular protruding part with a notch, and the protruding part can swing around the extending end of the valve core in a reciprocating mode in the notch of the annular protruding part.
The emergency brake valve for the electric locomotive is characterized in that the valve body is of an integrally-molded cast iron structure.
The emergency brake valve for the electric locomotive is characterized in that the outer contour of the rotating part is provided with a guide groove matched with the rotating wheel.
Compared with the prior art, the invention has the following characteristics and advantages:
1. the emergency braking signal generating device transmits the emergency braking signal to the locomotive control system while the emergency braking is carried out, so that the locomotive control system can timely obtain the emergency braking information of the locomotive, and the condition that equipment is damaged and even an operation accident is caused by improper operation due to the fact that the emergency braking of the locomotive cannot be timely obtained is avoided.
2. The valve body is made of cast iron materials and is formed by one-step casting, and compared with the valve body made of stainless steel materials in the prior art, the valve body has the advantages that the structural strength of the valve body is improved, the manufacturing cost is reduced, and the maintenance period is long.
3. According to the invention, the two symmetrically-arranged grooves are formed in the outer edge of the disc wheel, so that at least one groove can be in alignment fit with the rotating wheel in the rotating process of the disc wheel, the mounting process is simplified, and the assembly efficiency of the disc wheel is improved.
4. According to the invention, the sealing ring is arranged between the end cover and the valve core, so that a good sealing effect is achieved between the end cover and the valve core.
5. The end cover close to one side of the handle is provided with the stop piece, so that the rotation of the handle 3 is limited, and the handle can be accurately positioned.
Drawings
The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention. Wherein,
FIG. 1 is a schematic front view of an emergency brake valve for an electric locomotive according to the present invention;
FIG. 2 is a side cross-sectional structural schematic view of an emergency brake valve for an electric locomotive according to the present invention;
FIG. 3 is a schematic structural diagram of an emergency braking signal generating device according to the present invention;
FIG. 4 is another schematic structural diagram of the emergency braking signal generating device according to the present invention;
FIG. 5 is a schematic top sectional view of the valve body of the present invention;
fig. 6 is a schematic structural view of the end cap of the present invention.
In the figure: 1-a valve body; 2-a valve core; 3-a handle; 4-a gas channel; 5-emergency braking signal generating means; 51-a disk wheel; 52-pressure switch; 53-a housing; 54-a support; 55-a connecting rod; 56-a spring; 57-wheel; 58-grooves; 6-end cover; 7-sealing ring; 8-a stop member; 9-a protective cover; 10-a cam; 11-a screw; 12-mounting holes; 13-mounting holes; 14-an extension end; 15-protruding end.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings.
Referring to fig. 1, 2 and 5, fig. 1 is a schematic front view, a schematic side cross-sectional view and a schematic top cross-sectional view of a valve body of the emergency brake valve for an electric locomotive according to the present invention. As shown in the drawings, the emergency brake valve for electric locomotive of the present invention comprises a valve body 1, a valve core 2 and a driving device, in this embodiment, the driving device is an L-shaped handle 3, but the present invention is not limited thereto, and other mechanical methods can be adopted as long as the driving device is ensured to be able to drive the valve core 2 to rotate. The valve comprises a valve body 1 and is characterized in that an axially through gas channel 4 is arranged in the valve body 1, two mounting holes 12 and 13 are correspondingly arranged on the side wall of the valve body 1, the mounting holes 12 and 13 respectively penetrate through the gas channel 4 (as shown in figure 5), a valve core 2 is arranged in the gas channel 4, and the axis of the valve core is orthogonal to the axis of the gas channel. The valve core 2 is provided with a through hole which can be communicated with or sealed with the gas channel 4 in the radial direction, the axis of the valve core 2 extends to the outside of the valve body 1 from two ends through the mounting holes 12 and 13 to form two extending ends 14 and 15, one extending end 14 of the valve core 2 is fixedly connected with the handle 3, and under the action of external force, the handle 3 can rotate along the direction A in the figure 1, so that the valve core 2 is driven to rotate in the gas channel 4 by taking the axis of the valve core 2 as a rotation center, the gas channel 4 is controlled to be communicated or locked, and the effect of controlling the emergency brake valve to be opened or closed is achieved. In the present invention, the other protruding end 15 of the valve core 2 is connected with the emergency brake signal generating device 5. The handle 3 can drive the valve core to rotate along the direction A in the figure 1, the handle 3 drives the valve core 2 to rotate, when the valve core rotates to the through hole to be communicated with the gas channel, the valve core 2 drives the emergency braking signal generating device 5 to act to generate an emergency braking signal, and the emergency braking signal is output to a locomotive control system through an external circuit. Therefore, the locomotive control system can timely obtain the information of the emergency braking of the locomotive, and the damage of equipment and even the occurrence of operating accidents caused by improper operation due to the fact that the emergency braking of the locomotive cannot be timely obtained are avoided.
As an alternative embodiment of the present invention, please refer to fig. 3, which is a schematic structural diagram of an emergency braking signal generating device according to the present invention. As shown in fig. 3, the emergency braking signal generating device includes a pressure switch 52 and a rotating member, in this embodiment, a disk wheel 51, which is connected to the protruding end 15 of the valve core 2, so that the disk wheel 51 rotates together with the valve core 2. Preferably, as shown in fig. 2, the disc wheel 51 is fixedly connected with the protruding end 15 of the valve core 2 through a screw 11 penetrating through the center of the disc wheel 51, so as to ensure the firm reliability of the connection between the disc wheel 51 and the valve core 2. The pressure switch 52 is arranged outside the outline of the rotating part, the pressure switch 52 comprises a shell 53 and a transmission mechanism, the shell 53 is fixedly connected with the valve body 1 through a connecting piece 59, the transmission mechanism is arranged between the shell 53 and the rotating part, and the transmission mechanism is abutted to the disc wheel 51. The rotating part is driven to rotate by the valve core 2, and the transmission mechanism drives the electric connection sheet in the shell to be switched on and off so as to output an emergency braking signal to a locomotive control system.
As an alternative embodiment of the present invention, as shown in fig. 3, the transmission mechanism includes a support 54, a connecting rod 55, a rotating wheel 57 and a spring 56, the support 54 is fixed on the end surface of the housing 53 facing the disc wheel 51, one end of the connecting rod 55 is hinged to the support 54, so that the connecting rod 55 can swing around the support 54; the other end of the link 55 is pivotally connected to the wheel 57 through a pivot so that the wheel 57 can rotate about the pivot. The runner 57 is in rolling contact with the disc wheel 51. At least one groove 58 capable of accommodating the rotating wheel 57 is formed on the outer edge of the circular disc wheel 51, so that the rotating wheel 57 can be embedded in the groove 58. One end of the spring 56 is fixedly connected to the connecting rod 55, extends into the housing 53, and is connected to the electrical connection sheet in the housing 53, and the expansion and contraction of the spring 56 drives the electrical connection sheet in the housing 53 to be switched on or off, so as to generate an emergency braking signal, and output the emergency braking signal to a locomotive control system. The specific connection between the spring 56 and the electrical connection plate in the housing 53 and the process of generating the emergency braking signal are well known in the art and will not be described in detail herein.
As another alternative embodiment of the present invention, as shown in fig. 1 and 2, end caps 6 are respectively disposed on two sides of the valve body 1 corresponding to two extending ends 14 and 15 of the valve core 2, the end caps 6 are fixed on the valve body 1 through bolts, the two extending ends 14 and 15 of the valve core 2 respectively penetrate through the corresponding end caps 6 and extend to the outside of the end caps 6, so that the two extending ends 14 and 15 can be respectively connected with the handle 3 and the disk wheel 51. And sealing rings 7 are respectively arranged between the end cover 6 and the valve core 1, so that a good sealing effect is achieved between the end cover 6 and the valve core 1.
As another alternative embodiment of the present invention, as shown in fig. 1, one end of the L-shaped handle is inserted and fixed to a protruding end 14 on one side of the valve core 2 and extends to the outside of the protruding end to form a protruding portion, and is fixedly connected to the valve core 2 by a pin. Fig. 6 is a schematic structural diagram of an end cap according to the present invention. As shown in fig. 6, a stopper 8 is provided on the end cap 6 on the side where the handle 3 is provided. In this embodiment, the stopper 8 is an annular projection having a notch, and the projection can reciprocally swing around the protruding end 14 of the valve element 2 in the notch of the annular projection, thereby controlling the rotation angle of the handle. However, the present invention is not limited thereto as long as the stopper can limit the handle. For example: the stop member 8 may also be two cylindrical or conical protrusions with a certain interval arranged on the swing track of the protrusion of the handle 3, and the protrusion of the handle 3 can swing back and forth around the protruding end 14 of the valve core 2 between the two cylindrical or conical protrusions, thereby achieving the effect of controlling the rotation angle of the handle.
Since the disc wheel 51 is provided with only one groove 58, and the rotation angle of the disc wheel 51 is limited (because the rotation of the handle 3 is limited by the stop member 8), when the disc wheel is assembled, in order to ensure that the groove 58 of the disc wheel 51 can be matched with the rotating wheel 57, the groove 58 of the disc wheel 51 needs to be close to the rotating wheel 57, so that the complexity of the installation work and the installation difficulty are increased. In order to simplify the installation process, reduce the installation difficulty, and improve the installation efficiency, as another alternative embodiment of the present invention, as shown in fig. 3, two grooves 58 are formed on the outer edge of the circular disk wheel 51, and the two grooves 58 are symmetrically arranged along the center line of the circular disk wheel 51. Thus, when the wheel 51 is mounted, at least one of the grooves 58 is adjacent to the runner 57, thereby ensuring alignment between the grooves 58 and the runner 57 during rotation of the wheel 51.
In a preferred embodiment of the present invention, as shown in fig. 3, the groove 58 has a V-shaped cross section for receiving the runner 57. The present invention is not limited thereto, for example, the cross section of the groove 58 may be circular or other suitable shapes, as long as the groove can accommodate the runner 57 and ensure that the runner 57 can roll along the outer edge of the disk wheel 51.
In another preferred embodiment of the present invention, the outer contour of the circular disc wheel 51 is provided with a guide groove, and the guide groove can be matched with the rotating wheel 57 so as to guide the rotating wheel 57 to be matched with the circular disc wheel 51.
As another preferred embodiment of the present invention, as shown in fig. 2 and 3, a protective cover 9 is disposed outside the housing 53 of the pressure switch 52, so as to prevent external dust and sewage from entering the interior of the housing, thereby achieving a protective effect and prolonging the service life of the pressure switch.
In another preferred embodiment of the present invention, the valve body 1 is of an integrally formed cast iron structure. The valve body 1 is made of cast iron materials and is formed by one-step casting, so that the structural strength of the valve body is improved, and the manufacturing cost is reduced.
The working principle of the invention is as follows: as shown in fig. 1, when the electric vehicle is normally running, the gas passage 4 of the emergency brake valve body 1 and the through hole of the valve body 2 are closed, and the emergency brake valve is closed. At this time, the rotating wheel 57 of the transmission mechanism is just pressed against the groove 58 of the disk wheel 51 under the action of the spring 56, and the spring 56 is located at the maximum stretching position. Thus, when the spring 56 is in the maximum extended position, the electrical connection pads a, a 'of the pressure switch are in the on state and the electrical connection pads b, b' are in the off state, and the pressure switch outputs a locomotive normal operation signal (non-emergency brake quote) to the locomotive control system. When the locomotive encounters an emergency and needs emergency braking, the handle 3 is pulled by external force, and the handle 3 drives the valve core 2 to rotate in the gas channel 4. When the handle 3 drives the valve core 2 to rotate to a specified position, the gas channel 4 is in a through state with the through hole of the valve core 2, one end of the gas channel 4 is communicated with a brake main pipe of the locomotive, and the other end of the gas channel is communicated with the atmosphere, at the moment, compressed air in the brake main pipe is led out through the gas channel 4, the compressed air is rapidly decompressed, and an emergency braking effect is generated according to an exhaust braking principle. Further, as shown in fig. 3, the disk wheel 51 is rotated together with the rotation of the valve body 2, so that the runner 57 gradually disengages from the groove 58 of the disk wheel 51 and rolls relatively along the arc surface of the disk wheel 51. Thus, the circular arc of the disk wheel 51 applies pressure to the transmission mechanism, so that the spring 56 is compressed, the electrical connection sheets a, a 'in the pressure switch housing 53 are disconnected and the electrical connection sheets b, b' are conducted under the driving of the spring 56, an emergency braking signal is generated, and the pressure switch outputs the emergency braking signal to the locomotive control system. The specific structure of the pressure switch for controlling the on/off of the electrical connection piece of the pressure switch by the stretching and compressing of the spring 56 and the signal transmission of the pressure switch to the locomotive control system through the external circuit are well known in the art and will not be described in detail herein. The emergency braking signal generating device transmits the emergency braking signal to the locomotive control system while the emergency braking is carried out, so that the locomotive control system can timely obtain the emergency braking information of the locomotive, and the condition that equipment is damaged and even an operation accident is caused by improper operation due to the fact that the emergency braking of the locomotive cannot be timely obtained is avoided. In addition, the valve body is made of cast iron materials and is formed by one-step casting, and compared with the valve body made of stainless steel materials in the prior art, the valve body has the advantages that the structural strength is improved, and the manufacturing cost is reduced.
Fig. 4 is a schematic structural diagram of an emergency braking signal generating device according to another alternative embodiment of the present invention. As shown in fig. 4, the rotating member is a cam 10, and the center of the cam 10 is connected with the protruding end 15 of the valve core 2. The transmission mechanism in this embodiment is the same as that in the above-described embodiment, and the specific structure thereof will not be described in detail. In this embodiment, the cam 10 is in rolling contact with the runner 57. Thus, when the cam 10 rotates together with the valve core 2, the cam 10 can push the connecting rod 55 to rotate around the support 54 through the rotating wheel 57, and the extension and contraction of the spring 56 are realized. The expansion and contraction of the spring 56 is used for driving the on-off of the electric connection sheets in the shell 53 so as to send an emergency braking signal to a locomotive control system. However, the structure of the emergency braking signal generating device is not limited thereto, as long as when the handle is rotated to drive the valve core to rotate, the valve core can drive the emergency braking signal generating device to act, and an emergency braking signal is transmitted to a locomotive control system.
Other structures, functions and operation principles of the present embodiment are the same as those of the previous embodiments, and will not be described again.
The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and principles of the invention should fall within the protection scope of the invention.
Claims (5)
1. An emergency brake valve for an electric locomotive comprises a valve body, a valve core and a driving device, wherein an axially through gas channel is arranged in the valve body, a mounting hole which penetrates through the gas channel is formed in the side wall of the valve body, the valve core is arranged in the gas channel through the mounting hole, the axis of the valve core is orthogonal to the axis of the gas channel, and a through hole which can be communicated with or sealed with the gas channel is radially arranged on the valve core; the driving device can drive the valve core to rotate, and when the valve core rotates to the through hole and is communicated with the gas channel, the valve core drives the emergency braking signal generating device to act and outputs an emergency braking signal to a locomotive control system;
end covers are respectively arranged at two sides of the valve body and two extending ends corresponding to the valve core, the end covers are fixed on the valve body through bolts, the two extending ends of the valve core respectively penetrate through the corresponding end covers, sealing rings are respectively arranged between the end covers and the valve core, the driving device is an L-shaped handle, one end of the L-shaped handle penetrates through and is fixed on the extending end at one side of the valve core and extends to the outer side of the extending end to form a protruding part, a stop part is arranged on the end cover at one side of the handle, the stop part is two columnar or conical protruding parts with a certain interval and arranged on the swinging track of the protruding part of the handle, and the protruding part of the handle can swing back and forth around the extending end of the valve core between the two columnar or conical protruding parts;
the emergency braking signal generating device comprises a pressure switch and a rotating part, the rotating part is connected with the extending end of the valve core, the pressure switch is arranged on the outer side of the outline of the rotating part, the pressure switch comprises a shell and a transmission mechanism, the shell is connected with the valve body through a connecting piece, the transmission mechanism is arranged between the shell and the rotating part, the rotating part is driven to rotate through the valve core, and the on-off of an electric connecting sheet in the shell is controlled through the transmission mechanism so as to output an emergency braking signal to a locomotive control system;
the rotating part is a disc wheel, the transmission mechanism comprises a support, a connecting rod, a rotating wheel and a spring, the support is fixedly arranged on the end face of one side, facing the disc wheel, of the shell, one end of the connecting rod is hinged to the support, the other end of the connecting rod is pivoted with the rotating wheel, the rotating wheel can be in rolling contact with the disc wheel, at least one groove capable of containing the rotating wheel is formed in the outer edge of the disc wheel, one end of the spring is fixedly connected to the connecting rod and extends into the shell, and the on-off of an electric connecting sheet in the shell is controlled through the expansion and contraction of the spring so as to output an emergency braking signal to a locomotive control system;
when the spring is positioned at the maximum stretching position, the electric connection sheets a and a 'of the pressure switch are in a conducting state, the electric connection sheets b and b' are in a disconnecting state, and the pressure switch outputs a normal operation signal of the locomotive to a locomotive control system; the spring is compressed, the electric connection sheets a and a 'in the pressure switch shell are disconnected under the driving of the spring, the electric connection sheets b and b' are connected, an emergency brake signal is generated, and the pressure switch outputs the emergency brake signal to a locomotive control system.
2. The emergency brake valve for electric locomotives according to claim 1, wherein two of said grooves are provided on the outer periphery of said disc wheel, said two grooves being symmetrically disposed along the center line of said disc wheel.
3. An emergency brake valve for an electric locomotive according to claim 1 or 2, wherein a protective cover is provided on the exterior of the housing.
4. An emergency brake valve for an electric locomotive according to claim 1 or 2, wherein the valve body is of an integrally formed cast iron construction.
5. An emergency brake valve for an electric locomotive according to claim 1 or 2, wherein the outer profile of said rotatable member defines a channel for engaging said rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010255301.0A CN102371989B (en) | 2010-08-13 | 2010-08-13 | Emergency brake valve for electric locomotive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010255301.0A CN102371989B (en) | 2010-08-13 | 2010-08-13 | Emergency brake valve for electric locomotive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102371989A CN102371989A (en) | 2012-03-14 |
| CN102371989B true CN102371989B (en) | 2014-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010255301.0A Expired - Fee Related CN102371989B (en) | 2010-08-13 | 2010-08-13 | Emergency brake valve for electric locomotive |
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| CN (1) | CN102371989B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111267898B (en) * | 2020-02-13 | 2024-11-22 | 陕西榆横铁路有限责任公司 | A remote control emergency brake valve for railway propulsion vehicles |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3576529A (en) * | 1967-02-24 | 1971-04-27 | Marvin L Garrison | Deceleration warning device |
| CN2041381U (en) * | 1988-08-01 | 1989-07-19 | 舒军雄 | Cylinder valve |
| US5831232A (en) * | 1996-11-12 | 1998-11-03 | Westinghouse Air Brake Company | Pneumatic emergency brake application valve and an associated electrical signaling switch |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6840510B2 (en) * | 2001-07-26 | 2005-01-11 | Westinghouse Air Brake Technologies Corporation | Locomotive brake valve equipped with a range spring dampener |
| CN101774375B (en) * | 2010-03-12 | 2011-11-30 | 北京南车时代机车车辆机械有限公司 | Air brake valve for locomotive and use method thereof |
| CN101774376B (en) * | 2010-03-12 | 2011-12-28 | 北京南车时代机车车辆机械有限公司 | Air brake valve for locomotive and use method thereof |
| CN201761484U (en) * | 2010-08-13 | 2011-03-16 | 中国北车集团大同电力机车有限责任公司 | Emergency brake valve for electrical locomotive |
-
2010
- 2010-08-13 CN CN201010255301.0A patent/CN102371989B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3576529A (en) * | 1967-02-24 | 1971-04-27 | Marvin L Garrison | Deceleration warning device |
| CN2041381U (en) * | 1988-08-01 | 1989-07-19 | 舒军雄 | Cylinder valve |
| US5831232A (en) * | 1996-11-12 | 1998-11-03 | Westinghouse Air Brake Company | Pneumatic emergency brake application valve and an associated electrical signaling switch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102371989A (en) | 2012-03-14 |
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