CN109204003B

CN109204003B - Shoe lifting mechanism of current collector

Info

Publication number: CN109204003B
Application number: CN201811317811.9A
Authority: CN
Inventors: 周洁; 张彦林; 陈珍宝; 林平; 陈明国; 张海丰; 尹正乾; 彭宝林; 李军; 冯叶; 王秋红; 孙宁; 梁坤
Original assignee: CRRC Zhuzhou Locomotive Co Ltd
Current assignee: CRRC Zhuzhou Locomotive Co Ltd
Priority date: 2018-11-07
Filing date: 2018-11-07
Publication date: 2020-12-11
Anticipated expiration: 2038-11-07
Also published as: CN109204003A

Abstract

The invention discloses a current collector lifting shoe mechanism which comprises a long boot removing handle and a short boot removing handle hinged with the long boot removing handle, wherein the long boot removing handle and the short boot removing handle can rotate around a hinged point in a plane formed by the central line of the long boot removing handle and the central line of the short boot removing handle so as to push and pull a current collector to enable a carbon sliding block of the current collector to be in contact with or disconnected from a third rail. Compared with the existing boot removing handle, the mechanism adopts an articulated handle structure, so that the effective acting force arm is increased when the boot is removed, and the labor is saved for an operator. And the operator can lift or lower the boots in the vehicle in the whole course, and the operator body is prevented from extending out of the vehicle to operate, so that the operation safety is greatly improved. And the short boot removing handle is skillfully used as a component of the long boot removing handle, so that the storage space can be reduced. When manual lifting boots under the vehicle need to be carried out, the mechanism is disassembled, and the short boot removing handle is independently used for operation.

Description

Shoe lifting mechanism of current collector

Technical Field

The invention relates to the technical field of rail transit, in particular to a lifting shoe mechanism of a current collector.

Background

The current collector is also called a collector shoe, is arranged on a side framework of a bogie of a vehicle, and in the running process of a train, the carbon slide block is contacted with a third rail through the acting force of a spring to obtain electric energy, and the electric energy is supplied to the train through a cable, so that the power supply of the whole train is realized. As shown in fig. 1 and 2, the carbon slide block can be controlled to be in contact with or disconnected from the third rail 7 by controlling the rotation of the transmission rod 6 of the current collector, so that the shoe lifting or the shoe descending is realized.

Current collectors used in the market at present can be classified into manual operation and pneumatic operation according to the driving mode of a lifting shoe. The manual isolation of the manual current collector during the boot falling and the pneumatic current collector failure needs to adopt a manual boot removing tool, so that the isolation of the current collector boot by an operator on or under a vehicle is realized.

The existing manual boot removing tools are generally divided into an under-vehicle short boot removing handle and an on-vehicle long boot removing handle, and the boots are removed by adopting a pressing or rotating operation mode. The boot removing handles with the two structures are required to be capable of finishing boot descending only by overcoming all spring force as shown in figure 3, the boot descending arm is small, and operation is labor-consuming. When the boots are lowered on the vehicle, the operator needs to extend the body out of the vehicle body more to use the handle to lower the boots, so that potential safety hazards exist; in the existing design, the length of a boot lifting handle on a vehicle is long, and the boot lifting handle cannot be used under the vehicle, so that two tools, namely a long boot removing handle and a short boot removing handle, need to be used separately for removing the boot on the vehicle and under the vehicle.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a shoe lifting mechanism of a current collector, which is labor-saving and convenient, can realize the shoe removal from the upper part and the lower part of a vehicle at the same time and has high safety.

In order to solve the technical problems, the invention adopts the following technical scheme:

the long and short boot removing handles are connected with a transmission rod of the current collector and can rotate around a hinge point in a plane formed by the central line of the long boot removing handle and the central line of the short boot removing handle so as to push and pull the current collector to a carbon sliding block of the current collector to be in contact with or disconnected from a third rail.

Compared with the existing vertical pressing operation mode of the boot removing handle, the invention adopts the articulated handle structure, so that the effective acting force arm is increased during boot removing, and the labor is saved for an operator. In addition, the short boot removing handle is skillfully used as a part of the long boot removing handle, namely, the under-vehicle operating tool is used as a part of the on-vehicle operating tool, so that the storage space can be reduced. When manual lifting boots under the vehicle need to be carried out, the mechanism is disassembled, and the short boot removing handle is independently used for operation.

As a further improvement of the above technical solution:

the rotation angle between the long and short boot removing handles is 65-122 degrees.

Through accurate calculation, the rotation angle between the long and short boot removing handles is limited between 66 +/-1 degrees and 121 +/-1 degrees, so that boot lifting or boot lowering operation of an operator in a vehicle can be realized in the whole process, only extension elbow motion is needed in the operation process, the hand holding position of the boot removing handle operator is positioned in the vehicle no matter at the boot lifting or boot lowering position of the current collector, the body of the operator is prevented from extending out of the vehicle for operation, and the operation safety of the boot lifting is greatly improved.

As a further improvement of the above technical solution:

this application realizes that one of the specific structure of the rotation angle between limited length boots handle and the short boots handle of taking off is: the hinge end of the long boot removing handle is provided with a limiting piece, the hinge end of the short boot removing handle is provided with a hinge piece, one side of the limiting piece, which faces the hinge piece, is provided with a hinge groove, the end part of the hinge piece extends into the hinge groove and is hinged with the limiting piece, and the hinge groove is internally provided with an avoiding space for the hinge piece to swing around the hinge point; the slot of the hinge slot abuts the outer side of the hinge during rotation of the long and/or short bootie handle to define a rotation angle between the long and short bootie handles.

The second concrete structure that this application realizes that limit length takes off boots handle and the rotation angle between the short boots handle is: the hinge end of the long boot removing handle is provided with a limiting piece, the hinge end of the short boot removing handle is provided with a hinge piece, one side of the limiting piece, which faces the hinge piece, is provided with a hinge groove, the end part of the hinge piece extends into the hinge groove and is hinged with the limiting piece, and the hinge groove is internally provided with an avoiding space for the hinge piece to swing around the hinge point; the upper part of the end face of the hinged piece inclines towards the center line of the short-boot handle to form a first abutting surface, the lower part of the end face of the hinged piece inclines towards the center line of the short-boot handle to form a second abutting surface, and the first abutting surface or the second abutting surface abuts against the bottom wall of the hinge groove in the rotating process of the long-boot handle and/or the short-boot handle so as to limit the rotating angle between the long-boot handle and the short-boot handle. The limiting structure at the joint is adopted, so that the operation safety can be improved while the user experience is improved.

In order to accurately limit the rotation angle between the long and short bootjack handles to between 66 + -1 DEG and 121 + -1 DEG, the inclination angle alpha of the first abutting surface is 24 + -1 DEG, and the inclination angle beta of the second abutting surface is 33 + -1 deg.

The connecting position of the first abutting surface or the second abutting surface is provided with a rounded corner so as to reduce abrasion caused by frequent contact between the connecting position and the bottom wall of the hinge groove.

The articulated elements are articulated with the limiting parts through rotating shaft screws.

The long boot removing handle is fixed with the limiting piece through the shaft hole in an interference fit mode, and shaking between the long boot removing handle and the limiting piece is prevented.

In order to facilitate the disassembly of the short boot removing handle, the short boot removing handle and the hinged piece are matched and fixed through a threaded shaft hole.

The long boot removing handle is an insulating part, or an insulating layer is arranged at the free end of the long boot removing handle. The insulating property of the boot removing handle can be ensured, misoperation of personnel is prevented, and the boot removing handle is used for touching the third rail to cause electric shock.

And the free end of the short boot removing handle is provided with a connecting hole matched with the transmission rod of the current collector. The sleeve type connection mode can realize the convenience of matching and dismounting.

Compared with the prior art, the invention has the advantages that:

1. the invention adopts a joint type handle structure, increases the effective acting force arm when removing the boot, and leads an operator to save more labor. Preferably, the rotation angle between the long and short boot removing handles is limited between 66 +/-1 degrees and 121 +/-1 degrees, so that boot lifting or boot lowering operation of an operator in the vehicle in the whole process can be realized, the operator only needs to do extension elbow movement in the operation process, the hand holding position of the boot removing handle operator is positioned in the vehicle no matter at the boot lifting or boot lowering position of the current collector, the body of the operator is prevented from extending out of the vehicle to operate, and the operation safety of the boot is greatly improved.

2. In addition, the short boot removing handle is skillfully used as a part of the long boot removing handle, namely, the under-vehicle operating tool is used as a part of the on-vehicle operating tool, so that the storage space can be reduced. When manual lifting boots under the vehicle are needed, the mechanism is disassembled, and the short boot removing handle is independently used to remove the boots under the vehicle.

Drawings

Fig. 1 is a schematic view of a current collector in a shoe descending position.

Fig. 2 is a schematic view of the current collector in the shoe lifting position.

FIG. 3 is a schematic diagram showing the analysis of the effective moment arm of the prior art when the push-down type operating bootjack handle works.

Fig. 4 is a schematic structural diagram of a collector shoe mechanism according to an embodiment of the present invention.

Fig. 5 is an enlarged view of fig. 4 at a.

Fig. 6 is a schematic cross-sectional view of a hinge in an embodiment of the present invention.

Fig. 7 is a schematic view of a state that the collector shoe mechanism is at a minimum rotation angle according to the embodiment of the present invention.

Fig. 8 is a schematic view of a state where the collector shoe mechanism of the embodiment of the present invention is at the maximum rotation angle.

Fig. 9 is a schematic diagram of the cooperation between the collector shoe mechanism and the collector according to the embodiment of the present invention.

Fig. 10 is a schematic diagram illustrating an analysis of an effective moment arm of the current collector lifting shoe mechanism in operation according to an embodiment of the present invention.

Illustration of the drawings: 1. a boot remover handle; 2. a short bootie handle; 3. a limiting member; 31. a hinge slot; 4. an articulation member; 41. a first abutting surface; 42. a second abutting surface; 5. a spindle screw; 6. A transmission rod; 21. and connecting the holes.

Detailed Description

The invention is further described below with reference to specific preferred embodiments, without thereby limiting the scope of protection of the invention.

Example (b):

as shown in fig. 4 and 5, the current collector lifting shoe mechanism of the present embodiment includes a long shoe removing handle 1 and a short shoe removing handle 2 hinged to the long shoe removing handle 1, a limiting member 3 is fixed at a hinged end of the long shoe removing handle 1 through a shaft hole in an interference fit manner, a hinge member 4 is fixed at the hinged end of the short shoe removing handle 2 through a threaded shaft hole in a fit manner, a hinge groove 31 is formed at one side of the limiting member 3 facing the hinge member 4, an end of the hinge member 4 extends into the hinge groove 31 and is hinged to the limiting member 3, and an avoidance space for the hinge member 4 to swing around the hinge point is formed in the hinge groove 31; so that both the long and short bootie handles 1 and 2 can rotate around the hinge point in the plane formed by the center line of the long and short bootie handles 1 and 2.

As shown in fig. 6, the upper portion of the end surface of the hinge 4 is inclined toward the center line of the short-boot handle 2 by 24 ° to form a first abutment surface 41 (i.e., the inclination angle α of the first abutment surface 41 is 24 °), and the lower portion of the end surface of the hinge 4 is inclined toward the center line of the short-boot handle 2 by 33 ° to form a second abutment surface 42 (i.e., the inclination angle β of the second abutment surface 42 is 33 °), and as shown in fig. 7 and 8, the first abutment surface 41 or the second abutment surface 42 abuts against the bottom wall of the hinge groove 31 during rotation of the long-boot handle 1 and/or the short-boot handle 2 to stop the rotation, thereby defining the rotation angle between the long-boot handle 1 and the short-boot handle 2 between 66 ± 1 ° and 121 ± 1 °.

In the present embodiment, the contact position of the first abutment surface 41 or the second abutment surface 42 is provided with a rounded corner R15, so as to reduce the wear caused by frequent contact with the bottom wall of the hinge slot 31.

The long boot removing handle 1 is a rod-shaped structural member made of an insulating material, so that the insulating property of the boot removing handle is guaranteed, misoperation of personnel is prevented, and electric shock is caused by touching a third rail with the boot removing handle. The short boot removing handle 2 is of a sleeve structure and is convenient to connect with or remove from a transmission part of the current collector. In other embodiments, other forms such as a hex wrench may be used. The short boot-removing handle 2 is in threaded connection with the hinged part 4, and can be detached to be used as the short boot-removing handle when the boots are manually lifted under a vehicle.

In the working process, as shown in fig. 9, the connecting hole 21 of the short shoe-removing handle 2 is matched with the transmission rod 6 on the current collector, and an operator holds the long shoe-removing handle 1 on a vehicle, and can drive the transmission rod to move up and down by up-and-down pushing and pulling, so as to control the current collector to be lifted and lowered at the shoe lifting or shoe lowering position respectively.

The effective arm of force of the mechanism during working is shown in figure 10, and compared with the existing boot removing handle in a vertical pressing operation mode, the effective arm of force of the mechanism during working is greatly increased, so that an operator saves more labor. As can be seen from fig. 10, the shoe-removing handle is held by the hand of the operator, and the shoe-lifting position and the shoe-lowering position of the current collector are both in the vehicle, that is, the operator can operate in the vehicle in the whole course, so that the shoe-lifting of the current collector is realized, and the safety accident caused by the body of the operator stretching out of the vehicle for operation is avoided.

The above description is only for the preferred embodiment of the present application and should not be taken as limiting the present application in any way, and although the present application has been disclosed in the preferred embodiment, it is not intended to limit the present application, and those skilled in the art should understand that they can make various changes and modifications within the technical scope of the present application without departing from the scope of the present application, and therefore all the changes and modifications can be made within the technical scope of the present application.

Claims

1. A lifting shoe mechanism of a current collector is characterized by comprising a long bootjack handle (1) and a short bootjack handle (2) hinged with the long bootjack handle (1), wherein the short bootjack handle (2) is used for being in sleeve connection with a transmission rod (6) of the current collector, and both the long bootjack handle (1) and the short bootjack handle (2) can rotate around a hinged point in a plane formed by a central line of the long bootjack handle (1) and a central line of the short bootjack handle (2) so as to push and pull the current collector to enable a carbon sliding block of the current collector to be in contact with or disconnected from a third rail;

the rotation angle between the long boot removing handle (1) and the short boot removing handle (2) is 65-122 degrees.

2. The current collector lifting shoe mechanism according to claim 1, wherein a limiting piece (3) is arranged at the hinge end of the long shoe-removing handle (1), a hinge piece (4) is arranged at the hinge end of the short shoe-removing handle (2), a hinge groove (31) is formed in the side surface of the limiting piece (3) facing the hinge piece (4), the end of the hinge piece (4) extends into the hinge groove (31) and is hinged with the limiting piece (3), and an avoidance space for the hinge piece (4) to swing around the hinge point is formed in the hinge groove (31); the slot opening of the hinge slot (31) and the outer side of the hinge (4) abut during rotation of the long and/or short bootie handle (1, 2) to define a rotation angle between the long and short bootie handle (1, 2).

3. The current collector lifting shoe mechanism according to claim 1, wherein a limiting piece (3) is arranged at the hinge end of the long shoe-removing handle (1), a hinge piece (4) is arranged at the hinge end of the short shoe-removing handle (2), a hinge slot (31) is formed in one side, facing the hinge piece (4), of the limiting piece (3), the end of the hinge piece (4) extends into the hinge slot (31) and is hinged with the limiting piece (3), and an avoidance space for the hinge piece (4) to swing around the hinge point is formed in the hinge slot (31); the upper part of the end face of the hinge piece (4) inclines towards the center line of the short-boot handle (2) to form a first abutting surface (41), the lower part of the end face of the hinge piece (4) inclines towards the center line of the short-boot handle (2) to form a second abutting surface (42), and the first abutting surface (41) or the second abutting surface (42) of the long-boot handle (1) and/or the short-boot handle (2) abuts against the bottom wall of the hinge groove (31) during the rotation process to limit the rotation angle between the long-boot handle (1) and the short-boot handle (2).

4. A current collector shoe mechanism according to claim 3, wherein the inclination angle α of the first abutment surface (41) is 24 ± 1 °, and the inclination angle β of the second abutment surface (42) is 33 ± 1 °.

5. A current collector lifting shoe mechanism according to claim 4, wherein the junction of the first abutment surface (41) and the second abutment surface (42) is rounded.

6. A current collector lifting shoe mechanism according to any one of claims 3 to 5, wherein the hinge member (4) and the limiting member (3) are hinged by a rotating shaft screw (5).

7. The current collector lifting shoe mechanism according to any one of claims 3 to 5, wherein the long shoe removing handle (1) and the limiting piece (3) are fixed in an interference fit manner through a shaft hole; the short boot removal handle (2) and the hinged piece (4) are matched and fixed through a threaded shaft hole.

8. A current collector lifting shoe mechanism according to any one of claims 1 to 5, wherein the long-boot handle (1) is an insulating member, or the free end of the long-boot handle (1) is provided with an insulating layer.

9. A current collector lifting shoe mechanism according to any one of claims 1 to 5, wherein a free end of the short shoe removing handle (2) is provided with a connecting hole (21) matched with the transmission rod (6) of the current collector.