TWI855882B - Rotatable collector boat - Google Patents

Abstract

A rotatable collector boat includes a connecting seat, a collector shoe bracket and a reset unit. The connecting seat is connected to an upper arm of a pantograph, and the connecting seat includes an axle tube; the collector shoe bracket is used to support the collector shoe of the collector boat, and the collector shoe bracket includes a shaft sleeve, and the shaft sleeve is sleeved on the axle tube. The reset unit enables the shaft sleeve and the axle tube to make a reciprocating relative displacement, so that the collector shoe bracket can move up and down between a first position and a second position along the axis of the axle tube, and can be horizontally adjusted and rotated when the collector shoe bracket is located at the first position. The collector shoe also rotates 180 degrees as the collector shoe bracket rotates. The wear of the collector shoe caused by the overhead cable can be evenly distributed on both sides of the collector shoe, thereby increasing the service life of the collector shoe.

Description

Rotatable collector boat

The present invention relates to a current collecting boat, and in particular to a rotatable current collecting boat.

The known pantograph is a device used in electrified railway systems to provide the electricity required for the operation of electric trains. This is a common technology in modern electrified railway transportation. The pantograph is usually installed on the locomotive on the roof of an electrified railway car. The part of the upper end of the pantograph that contacts the overhead cable is called a pantograph boat. The pantograph is raised by a retractable device to make the pantograph boat contact the overhead cable. The pantograph can move in two directions, upward or downward, to ensure good contact with the overhead cable in different sections. Overhead cables transmit electricity to pantographs, which act as contact conductors to conduct electricity from the overhead cables to the train. In this way, the train can obtain the electricity required for operation and supply the electric engine to propel the train forward. As seen in China Publication CN112590558A, the invention patent case entitled "A pantograph based on a dual-source power truck" is an example. The patent technology discloses a pantograph, including a base, with two pantograph arms that can rotate on the top of the base arranged at both ends of the top of the base. The characteristic is that the pantograph arm includes a bow head steering motor, and the bow head steering motor can turn the pantograph arm so that the carbon brush of the pantograph arm can be evenly worn instead of just unilateral wear, which can significantly increase the service life of the carbon brush.

Although the above-mentioned pantograph can evenly wear out the carbon brushes on the pantograph arm by turning the pantograph head to the direction of the motor, this device is completely controlled by electricity, which makes them very dependent on the supply of electricity. If a line is broken, these devices may not work properly; if there is a failure in the electronic components and circuits, the device will stop, or even worse, the equipment will be damaged or dangerous; and electric control requires more electronic components and equipment, and compared with manual control, the cost will be higher in terms of manufacturing, installation and maintenance. Therefore, there is a potential market demand for a rotatable pantograph boat that can avoid the use of electricity.

In view of this, the purpose of the present invention is to provide a rotatable collector boat, which can make the collector shoe of the collector boat complete a 180-degree rotation in the horizontal plane through manual or physical means, so that the carbon brushes on the collector shoe are evenly worn and the service life of the collector shoe is increased.

In order to achieve the above-mentioned purpose, the present invention provides a rotatable collector boat, which is connected to an upper arm of a pantograph, and the collector boat includes a connection seat, a collector shoe bracket and a reset unit. The connection seat is connected to the upper arm, and the connection seat includes a shaft tube, and the shaft tube has an end cover plate; the collector shoe bracket is used to support the collector shoe of the collector boat, and the collector shoe bracket includes a shaft sleeve, and the shaft sleeve is sleeved on the shaft tube, and the collector shoe bracket can move up and down between a first position and a second position along the axis of the shaft tube; when the collector shoe bracket is in the first position, the collector shoe bracket is in the second position. The reset unit includes a shaft pin and a spring, one end of the shaft pin is fixedly connected to the collector shoe bracket, and the other end passes through a hole of the end cover plate and extends to the inside of the shaft tube of the connecting seat, the shaft pin has an abutment portion, the spring is arranged in the inside of the shaft tube and sleeved with the shaft pin, one end of the spring abuts against the inner wall of the end cover plate, and the other end abuts against the abutment portion of the shaft pin.

The effect of the present invention is that the collector shoe bracket used to support the collector shoe can be horizontally adjusted and rotated when located at the first position. After being rotated manually or physically, the reset unit can reset the collector shoe bracket to the second position. At this time, the collector shoe has also been rotated 180 degrees. The wear of the collector shoe caused by the overhead cable can also be evenly distributed on both sides of the collector shoe, thereby increasing the service life of the collector shoe.

In order to explain the present invention more clearly, a preferred embodiment is given and described in detail with reference to the drawings. Referring to Figures 1 to 5, a rotatable collector boat 100 of a preferred embodiment of the present invention is connected to an upper arm 1a of a pantograph 1. The pantograph 1 is stretched or contracted between the upper arm 1a and the lower arm 1b to ensure that the rotatable collector boat 100 can maintain good contact with the overhead cable in different sections.

6 and 7 , the rotatable collector boat 100 of the present embodiment includes a connecting seat 10 , a collector shoe bracket 20 , a reset unit 30 and two collector shoes 40 . The connecting seat 10 is pivotally connected to one end of the upper arm 1a, and the connecting seat 10 includes a shaft tube 11; the collector shoe bracket 20 is used to support the two collector shoes 40, and the collector shoe bracket 20 includes a shaft sleeve 21 and a collector shoe square tube 22, and the shaft sleeve 21 is sleeved on the shaft tube 11; the reset unit 30 enables the shaft sleeve 21 and the shaft tube 11 to make a reciprocating relative displacement, and the reciprocating path between the shaft sleeve 21 and the shaft tube 11 is defined as an axis L, and the collector shoe bracket 20 can move up and down along the direction of the axis L between a first position P1 as shown in FIG. 9 and a second position P2 as shown in FIG. 3; wherein the collector shoe bracket 20 can be horizontally adjusted and rotated when it is located at the first position P1.

The connecting base 10 further includes a fixing portion 12 , and the fixing portion 12 includes two fixing holes 121 and two bolts 122 . The two bolts 122 respectively pass through one of the fixing holes 121 and are locked to the upper arm 1 a , so that the connecting base 10 is pivotally connected to the upper arm 1 a of the pantograph 1 . The shaft tube 11 is a hollow cylinder and is connected to the fixing portion 12. Some components of the reset unit 30 are installed between the interior of the shaft tube 11 and the upper arm 1a. The shaft tube 11 includes an end cover plate 111, two grooves 112 and at least one positioning groove 113, wherein the two grooves 112 are recessed from the outer tube wall of the shaft tube 11 along the axis L direction, and the two grooves 112 respectively have an opening 112a formed on the end cover plate 111. In this embodiment, the at least one positioning groove 113 is two and is symmetrically arranged on the outer tube wall of the shaft tube 11, and each is located below one of the grooves 112.

The collector shoe square tube 22 is a long strip rod and is provided with a plurality of through holes 221 in the middle portion. A plurality of bolts 23 respectively pass through the through holes 221 of the collector shoe square tube 22 and are screwed into a plurality of screw holes 213 on the sleeve 21, so that the sleeve 21 is fixedly connected to the bottom of the collector shoe square tube 22. The sleeve 21 includes at least one through hole 211 and at least one positioning hole 212. In this embodiment, the at least one through hole 211 and the at least one positioning hole 212 are screw holes and have two of them respectively. The interior of the sleeve 21 is cylindrical and hollow, and is sleeved with the cylindrical sleeve 11. The sleeve 21 includes two positioning pins 214, both of which have threaded sections and are each screwed into one of the through holes 211 and extend into one of the grooves 112. The two positioning pins 214 are used to limit the relative rotation between the sleeve 21 and the shaft tube 11. The sleeve 21 includes two fixing pins 215, both of which have threaded sections and are each screwed into one of the positioning holes 212, and one end of each of the two fixing pins 215 is against one of the positioning grooves 113. The two fixing pins 215 are used to limit the relative up and down displacement between the sleeve 21 and the shaft tube 11.

The reset unit 30 includes a shaft pin 31 and a spring 32. One end of the shaft pin 31 is located between the collector shoe square tube 22 and the shaft sleeve 21, and the other end passes through a hole 111a of the end cover plate 111 and extends to the inside of the shaft tube 11 of the connecting seat 10. The shaft pin 31 of this embodiment includes a movable member 311 and a fixing member 312. The movable member 311 includes a head 311a and a body 311b. The head 311a is connected to the upper end of the body 311b and has a diameter greater than that of the body 311b. The body 311b passes downward through an axial hole 217 of the shaft sleeve 21, the hole 111a of the end cover plate 111, and is fixed to the shaft sleeve 21. The fixing member 312 in the shaft tube 11 is detachably connected, and the diameter of the head portion 311a is larger than the diameter of the shaft hole 217, so that the head portion 311a of the movable member 311 is located between the collector shoe square tube 22 and the shaft sleeve 21. The collector shoe square tube 22 is locked to the shaft sleeve 21 through the bolts 23, thereby clamping the head portion 311a of the movable member 311, so that the movable member 311 is detachably connected. The collector shoe bracket 20 is provided; the fixing member 312 is located in the shaft tube 11, the fixing member 312 includes a body 312a and an abutting portion 312b, the abutting portion 312b is connected to one end of the body 312a and has a diameter greater than the diameter of the body 312a, the body 312a is detachably connected to the movable member 311, and the body 312a is cylindrical and has a radius greater than the hole 11 1a radius; the abutment portion 312b is disc-shaped and is located at the lower end of the body portion 312a, the spring 32 is located in the shaft tube 11, one end of the spring 32 abuts against the inner wall of the end cover plate 111, and the other end abuts against the upper end of the abutment portion 312b of the fixing member 312, the spring 32 is sleeved on the fixing member 312, at this time the collector shoe bracket 20 is located at the second position P2, and the spring 32 is in a stretched state.

Please refer to Figures 8 to 10. Through human operation, the collector shoe bracket 20 can move up and down between the first position P1 and the second position P2 along the axis L. When the collector shoe bracket 20 is ready to move from the second position P2 to the first position P1, first move the fixing pin 215 out of the positioning groove 113 and withdraw it from the positioning hole 212; or slightly rotate the fixing pin 216 to move it out of the positioning groove 113, and the fixing pin 216 still stays in the positioning hole 212. At this time, the collector shoe bracket 20 can move up and down relative to the connecting seat 10. Through human power or other physical means, the collector shoe bracket 20 is moved up to the first position P1 and is located at the The two positioning pins 214 of the sleeve 21 are respectively disengaged from the opening 112a upward from the groove 112, and the collector shoe bracket 20 can rotate relative to the connecting seat 10; the movable member 311 passes upward through the hole 111a of the end cover plate 111; the abutment portion 312b of the fixing member 312 presses the spring 32 upward, so that the spring 3 The body 312a of the fixing member 312 is in a compressed state between the end cover plate 111 and the abutting portion 312b, and approaches or even abuts against the end cover plate 111 upwardly. The distance that the body 312a rises to approach or even abuts against the end cover plate 111 is greater than the distance that the two positioning pins 214 are respectively separated from the opening 112a upwardly from the groove 112.

The collector shoe bracket 20 rotates 180 degrees in the horizontal plane relative to the connecting seat 10, and the two positioning pins 214 located on the sleeve 21 also rotate 180 degrees to the other side and align with the other groove 112 respectively. At this time, the collector shoe bracket 20 is no longer maintained in the first position P1 by external force. Since the spring 32 located in the shaft tube 11 is in a compressed state, the spring 32 generates a downward thrust on the abutment portion 312b of the fixing member 312, so that the fixing member 312 moves downward, and drives the movable member 311 and the collector shoe bracket 20 connected thereto to move upward. When the collector shoe bracket 20 moves downward to the second position P2, the two positioning pins 214 also pass through the other opening 112a downward and fall into the other groove 112, so that the collector shoe bracket 20 cannot rotate relative to the connecting seat 10; the two fixing pins 215 respectively pass through one of the positioning holes 212 of the shaft sleeve 21, and one end is against one of the positioning grooves 113 of the shaft tube 11, so that the collector shoe bracket 20 cannot move up and down relative to the connecting seat 10, so that the rotatable collector boat 100 completes a 180-degree rotation on the horizontal plane.

Another preferred embodiment of the present invention is a rotatable collector boat 100a, which has a structure substantially the same as that of the preferred embodiment described above, except that, as shown in FIGS. 11 and 12, two trapezoidal grooves 114 are used to replace the two grooves 112 described above. The two trapezoidal grooves 114 are formed from the outer wall of the shaft tube 11 along the axis L. The two trapezoidal grooves 114 each have an opening 114a formed on the end cover plate 111. The shaft tube 11 has two positioning grooves 113a. The two positioning grooves 113a are provided on the end cover plate 111. 3a are respectively formed by being recessed from the groove wall of one of the trapezoidal grooves 114, and the collector shoe bracket 20 includes at least one trapezoidal protrusion 21a. In the present embodiment, there are two trapezoidal protrusions 21a, and the two trapezoidal protrusions 21a are respectively engaged with one of the trapezoidal grooves 114. The two trapezoidal protrusions 21a respectively include a positioning hole 212a, and the two fixing pins 215 are respectively screwed into one of the positioning holes 212a, and one end thereof is against one of the positioning grooves 113a, so that the collector shoe bracket 20 is maintained in the second position P2.

When the collector shoe bracket 20 moves to the first position P1, first move the fixing pin 215 out of the positioning groove 113a and withdraw it from the positioning hole 212a; or slightly rotate the fixing pin 216 to move it out of the positioning groove 113a, and the fixing pin 216 still stays in the positioning hole 212a. At this time, the collector shoe bracket 20 can move up and down relative to the connecting seat 10. Through manpower or other physical means, the collector shoe square tube 22 is moved up to the first position P1, and the two trapezoidal protrusions 21a are respectively disengaged from the opening 114a upward from the trapezoidal groove 114. At this time, the collector shoe bracket 20 can rotate relative to the connecting seat 10.

The collector shoe bracket 20 rotates 180 degrees in the horizontal plane relative to the connecting seat 10, and the two trapezoidal protrusions 21a also rotate 180 degrees to the other side and align with the other trapezoidal groove 114 respectively. At this time, the collector shoe bracket 20 is no longer maintained at the first position P1 by external force. When the collector shoe bracket 20 moves downward to the second position P2, the two trapezoidal protrusions 21a also move downward through the other opening. The two fixing pins 215 are respectively passed through a positioning hole 212a, and one end is against a positioning groove 113a, so that the collector shoe bracket 20 cannot move up and down relative to the connecting seat 10. In this way, the rotatable collector boat 100a completes a 180-degree rotation on the horizontal plane.

The above description is only the preferred embodiment of the present invention. Any equivalent changes made by applying the present invention specification and the scope of patent application should be included in the patent scope of the present invention.

[The present invention] 1: pantograph 1a: upper arm 1b: lower arm 100,100a: collector boat 10: connector 11: shaft tube 111: end cover plate 111a: hole 112: groove 112a,114a: opening 113,113a: positioning groove 114: trapezoidal groove 12: fixing portion 121: fixing hole 122: bolt 20: collector shoe bracket 21: shaft sleeve 21a: trapezoidal protrusion 211: through hole 212,212a: positioning hole 213: screw hole 214: positioning pin 215,216: fixing pin 217: shaft hole 22: collector shoe square tube 221: Through hole 23: Bolt 30: Reset unit 31: Axle pin 311: Movable member 311a: Head 311b: Body 312: Fixing member 312a: Body 312b: Abutment 32: Spring 40: Collector shoe L: Axis P1: First position P2: Second position

FIG. 1 is a three-dimensional view of a rotatable collector boat of a preferred embodiment of the present invention. FIG. 2 is a three-dimensional view of the rotatable collector boat shown in FIG. 1 from another perspective. FIG. 3 is a front view of FIG. 2, revealing that the collector shoe bracket in the collector boat is located in the second position. FIG. 4 is a top view of FIG. 2. FIG. 5 is a side view of FIG. 2. FIG. 6 is a partial exploded schematic diagram of the rotatable collector boat shown in FIG. 2. FIG. 7 is a cross-sectional view taken along the 7-7 direction of FIG. 4. FIG. 8 is similar to FIG. 7, revealing that two fixing pins in the collector boat are disengaged from two positioning grooves. FIG. 9 is similar to FIG. 3, revealing that the collector shoe bracket in the collector boat is located in the first position. FIG. 10 is similar to FIG. 7, revealing that the collector shoe bracket in the collector boat is located in the first position. FIG. 11 is a three-dimensional view of some components of a rotatable collector boat of another preferred embodiment of the present invention. FIG. 12 is similar to FIG. 11 , revealing that the collector shoe bracket in the collector boat is located in the first position.

1: Pantograph

1a: Upper arm

1b: Lower arm

100: Electric boat

10: Connector

21: Bushing

40: Collector shoe

Claims (7)

A rotatable collector boat is connected to an upper arm of a pantograph, comprising: a connection seat connected to the upper arm, the connection seat including an axle tube, the axle tube having an end cover plate; a collector shoe bracket for supporting the collector shoe of the collector boat, the collector shoe bracket including an axle sleeve, the axle sleeve sleeved on the axle tube, and the collector shoe bracket can move up and down between a first position and a second position along the axis of the axle tube; wherein the collector shoe bracket can be horizontally adjusted and rotated when located at the first position; and A reset unit includes a shaft pin and a spring. One end of the shaft pin is fixed to the collector shoe bracket, and the other end passes through a hole of the end cover plate and extends to the inside of the shaft tube of the connecting seat. The shaft pin has an abutment portion. The spring is arranged inside the shaft tube and sleeved with the shaft pin. One end of the spring abuts against the inner wall of the end cover plate, and the other end abuts against the abutment portion of the shaft pin. A rotatable collector boat as described in claim 1, wherein the spring is in a compressed state when the collector shoe bracket is in the first position, and the spring is in a stretched state when the collector shoe bracket is in the second position. A rotatable collector boat as described in claim 1 or 2, wherein the axle pin includes a movable part and a fixed part, one end of the movable part is detachably connected to the collector shoe bracket, the other end of the movable part passes through the hole and is detachably connected to the fixed part, the fixed part is located inside the axle tube and has the abutment portion; the spring is sleeved around the fixed part. A rotatable collector boat as described in claim 1, wherein the shaft tube has two grooves recessed from the outer tube wall, and the two grooves respectively have an opening formed on the end cover plate, the shaft sleeve has at least one through hole, a positioning pin passes through the at least one through hole and extends into one of the grooves, wherein when the collector shoe bracket moves from the second position to the first position, the positioning pin passes through one of the openings. A rotatable collector boat as described in claim 4, wherein the shaft tube has at least one positioning groove, the shaft sleeve has at least one positioning hole, a fixing pin passes through the at least one positioning hole and one end of the fixing pin abuts against the at least one positioning groove, so that the collector shoe bracket is maintained in the second position. A rotatable collector boat as described in claim 1, wherein the shaft tube has two trapezoidal grooves recessed from the outer tube wall, and the two trapezoidal grooves respectively have an opening formed on the end cover plate, and the collector shoe bracket includes at least one trapezoidal protrusion, and the at least one trapezoidal protrusion engages with one of the trapezoidal grooves, wherein when the collector shoe bracket moves from the second position to the first position, the at least one trapezoidal protrusion disengages from one of the trapezoidal grooves. A rotatable collector boat as described in claim 6, wherein the shaft tube has two positioning grooves, and the two positioning grooves are respectively formed by recessing from the groove wall of the trapezoidal groove, and the at least one trapezoidal protrusion includes a positioning hole, a fixing pin passes through the positioning hole and one end of the fixing pin is against one of the positioning grooves to keep the collector shoe bracket in the second position.

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