JPH07274305A - Current collector for trolley - Google Patents

Abstract

PURPOSE:To provide a current collector for trolley in which a good operating state can be sustained. CONSTITUTION:The current collector for trolley comprises a collector piece 1 having a feeder line 6 connected with a machine moving along a rail laid with a conductor and sliding on the conductor, an arm 7 for supporting the collector piece 1 rockingly, a base 8 fixed to the moving machine while holding the supporting arm 7, and an anti-resonance member 10 having specified size and weight and fixed detachably to the collector piece 1 in order to alter the oscillation of the collector piece 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a crane, hoist,
The present invention relates to a trolley current collector that supplies power to mobile equipment such as a carrier line.

[0002]

2. Description of the Related Art A trolley current collector of this type is disclosed, for example, in Japanese Examined Patent Publication No. 4-70846. This has a current collector, a support arm, and a mounting base. The current collector has a power supply line connected to a mobile device that moves along a rail on which the conductor extends, and is in sliding contact with the conductor. The support arm swingably supports the current collector. The mounting base holds the support arm and is attached to the mobile device.

[0003]

However, the above-mentioned ones have some problems. That is, during the movement of the mobile device, the frictional force at the contact portion between the current collector and the conductor is
It may become non-uniform due to oil stains and the like, and the current collector may vibrate so as to resonate with the conductor. As a result, a large vibrating noise is generated, which causes a great deal of discomfort to workers and the like in the surroundings, and the work environment and workability are significantly deteriorated. Further, in an extreme case, the current collector may be separated due to the influence of resonance.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a current collector for a trolley which can maintain a good use condition.

[0005]

In order to solve the above problems, a trolley current collector according to a first aspect of the present invention has a power supply line connected to a mobile device that moves along a rail on which a conductor is extended. A current collector that slidably contacts the conductor, a support arm that swingably supports the current collector, a mounting base that holds the support arm and is attached to a mobile device, and a current collector that has a predetermined size and weight. A resonance preventing member that is detachably attached to the member and that changes the vibration of the current collector.

According to a second aspect of the present invention, there is provided a trolley current collector in which the resonance preventing member according to the first aspect is formed so that it can be attached to a current collector supported by a support arm and in contact with a conductor. It is configured to be.

According to a third aspect of the present invention, in the trolley current collector, the resonance preventing member according to the second aspect is connected to the fitting portion, which is removably fitted to a predetermined portion of the current collector. And a locking portion that locks near the base end of the power supply line.

[0008]

According to the structure of the first aspect, the resonance prevention member changes the vibration of the current collector, thereby eliminating the resonance between the current collector and the conductor.

According to the structure described in claim 2, in addition to the operation described in claim 1, it is not necessary to remove the trolley current collector from the mobile device when the resonance preventing member is attached and detached.

According to the structure of claim 3, in addition to the effect of claim 2, the resonance preventing member is firmly attached to the current collector.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

This trolley current collector comprises a current collector 1 and
A support arm 7, a mounting base 8 and a resonance prevention member 10 are provided. Each member except the resonance preventing member 10 has the same basic structure as that shown in the conventional example.

The current collector 1 is for sliding contact with a conductor,
It consists of a current collector main body 2, a current collector holder 3, and a power supply line 6. The collector main body 2 is made of a conductive material, has an elongated thin plate shape, and is fitted into the groove of the conductor.

The collector holder 3 is made of a material having an insulating property, and covers about half of the collector main body 2 from the intermediate portion to one end in the lateral direction. It is integrally molded. That is, it is the other end of the current collector body 2 that is inserted into the groove of the conductor. Further, a connection portion 4 with a support arm 7 to be described later is provided at an intermediate portion in the longitudinal direction of the collector holder 3. Further, in the vicinity of one end of the current collector holder 3 in the longitudinal direction, a power supply line holder 5 having a substantially cylindrical shape and holding one end of a power supply line 6 described later is provided.

One end of the power supply line 6 is connected to the current collector main body 2 by being held by the power supply line holder 5 of the current collector holder 3, and the other end of the power supply line 6 is connected to a mobile device that moves along a rail extending conductor. It is connected.

One end 7a of the support arm 7 is connected to the connecting portion 4 of the current collector holder 3 to support the current collector 1 in a swingable manner, and the other end 7b is attached to a mounting base 8 to be described later. Connected to. The support arm 7 extends to the opposite side of the feeder line 6 when viewed from the connecting portion 4 of the collector holder 3, and has one end portion.
7a, the other end portion 7b, and the intermediate portion 7c constitute a link mechanism. Further, the support arm 7 is urged by the urging spring (not shown) provided in the intermediate portion 7c in the direction in which the one end portion 7a presses the current collector 1 against the conductor.

The mounting base 8 is the other end 7b of the support arm 7.
Can be held at a facing position, and is attached to the mobile device with a holding part 9 for holding the rod-shaped body of the mobile device.

The resonance preventing member 10 has a predetermined size and a predetermined weight and is detachably attached to the current collector 1 to change the vibration of the current collector 1. For example, iron is used as a material to have a predetermined shape. Is formed by the lost wax method, and the surface thereof is insulation-coated with a nylon coating. The resonance prevention member 10 is formed so that it can be attached to the current collector 1 supported by the support arm 7 and in contact with the conductor. Specifically, as shown in FIG.
A fitting block 11 that is a fitting portion that fits into a predetermined position of the current collector 1 so that it can be freely inserted and removed, and a locking portion that is a locking portion that is connected to the fitting portion and that locks in the vicinity of the base end portion of the power supply line 6. It is composed of a piece 15 and a set screw 19 for connecting the locking piece 15 to the fitting block 11.

The fitting block 11 has a substantially rectangular parallelepiped shape and has a fitting groove 12, a notch 13, and a screw hole 14. The fitting groove 12 is provided from one end to the other end in the longitudinal direction of the fitting block 11 and has a width slightly larger than the thickness of the collector holder 3. The notch 13 is the fitting block 11
Connect one end in the longitudinal direction of the
It is provided so as to be cut into a substantially U shape so that it can come into contact with. The screw hole 14 is provided on the surface opposite to the surface on which the fitting groove 12 is provided, and is formed by engraving a female screw on the inner circumference.

The locking piece 15 has a substantially rectangular plate shape, and has a feed line insertion groove 16, a locking projection 17, and a through hole 18, and is provided with a screw hole 14 of the fitting block 11. It is connected by overlapping the face. The power feed line insertion groove 16 is provided at one end of the locking piece 15 in the longitudinal direction so as to extend in the lateral direction, and has a width slightly larger than the outer diameter of the power feed line 6. The locking protrusion 17 is a locking piece 15.
It is provided at one end portion in the longitudinal direction and can be locked to the feeder line holding portion 5 of the collector holder 3. The through hole 18 is provided at a position corresponding to the screw hole 14 when the locking piece 15 is placed on the fitting block 11.

The set screw 19 is formed by engraving a male screw on the outer circumference, penetrates the through hole 18 of the locking piece 15 and is screwed into the screw hole 14 of the fitting block 11 to form the locking piece 15. And the fitting block 11 are connected. When the set screw 19 is loosened, the locking piece 15 can be rotated.

The resonance prevention member 10 is attached to the current collector 1 in the following manner. First, loosen the set screw 19 screwing the fitting block 11 and the locking piece 15 to each other.
Is rotated to a position where it does not overlap the notch 13 of the fitting block 11. Next, the fitting groove 12 of the fitting block 11 is fitted into the current collector holder 3 from the longitudinal direction, and the notch 13 is brought into contact with the power supply line holding portion 5. Next, the locking piece 15 is rotated to a position where the power supply line 6 is inserted into the power supply line insertion groove 16. Then, the resonance prevention member 10 is attached to the current collector 1 by tightening the set screw 19.

In such a current collector for trolley, when the current collector 1 resonates with the conductor and a large amount of noise is generated, the resonance preventing member 10 is attached to change the vibration of the current collector 1 and cause resonance with the conductor. Since this is eliminated, noise can be reduced and a good working environment and workability can be maintained. FIG. 9 is a graph showing the resonance waveforms of the current collector 1 and the conductor before attaching the resonance preventing member 10, and FIG. 10 is a graph showing the resonance waveforms of the current collector 1 and the conductor after attaching the resonance preventing member 10. Further, by attaching the resonance prevention member 10, the current collector 1
Since the vibration of the current collector 1 is suppressed, the possibility that the current collector 1 will be separated is reduced. Furthermore, when attaching the resonance prevention member 10, there is no need to remove the trolley current collector from the mobile device,
Installation work can be easily done.

The size of the resonance preventing member is such that when it is attached to one current collector and another current collector which are adjacent to each other in correspondence with a plurality of conductors arranged in parallel, they collide with each other or cause current collection. It may be set within a range that does not cause inconvenience such as not fitting in the space between them. Further, the weight of the resonance preventing member may be set within a range in which the vibration of the current collector can be changed and there is no inconvenience that the current collector is separated from the conductor by the weight. Further, the shape of the resonance preventing member can be appropriately changed in design.

[0025]

The trolley current collector according to claim 1
By changing the vibration of the current collector by the resonance prevention member,
Since the resonance between the current collector and the conductor is eliminated, noise is reduced,
A good use state can be maintained.

In addition to the effect of claim 1, the trolley current collector according to claim 2 does not require the trolley current collector to be detached from the mobile device when the resonance preventing member is attached or detached. It is possible to easily attach and detach the prevention member.

Further, in the trolley current collector according to a third aspect of the present invention, in addition to the effect of the second aspect, since the resonance prevention member is firmly attached to the current collector, noise is not regenerated due to the resonance prevention member falling off. Can be prevented.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the resonance preventing member as seen from above.

FIG. 3 is an exploded perspective view of the resonance preventing member as seen from below.

FIG. 4 is a perspective view showing a state where a set screw of the resonance preventing member is tightened.

FIG. 5 is a perspective view showing a state where a set screw of the resonance preventing member is loosened.

FIG. 6 is a front view showing a fitting block of the resonance preventing member.

FIG. 7 is a rear view showing a fitting block of the resonance preventing member.

FIG. 8 is a side view showing the fitting block of the resonance preventing member as seen from the longitudinal direction.

FIG. 9 is a graph showing resonance waveforms of a current collector and a conductor before attaching the resonance prevention member.

FIG. 10 is a graph showing resonance waveforms of a current collector and a conductor after attaching the resonance prevention member.

[Explanation of symbols]

 1 Current collector 6 Feed line 7 Support arm 8 Mounting base 10 Resonance prevention member

Claims (3)

[Claims] 1. A current collector that has a power supply line connected to a mobile device that moves along a rail on which a conductor extends and has a support arm that slidably contacts the conductor, and a support arm that swingably supports the current collector. A trolley including an attachment base that holds an arm and is attached to a mobile device, and a resonance prevention member that has a predetermined size and a predetermined weight and is detachably attached to the current collector and that changes the vibration of the current collector. Current collector. 2. The trolley current collector according to claim 1, wherein the resonance prevention member is formed so as to be attachable to a current collector supported by a support arm and in contact with a conductor. 3. The resonance preventing member includes a fitting portion that is removably fitted into a predetermined portion of the current collector, and a locking portion that is connected to the fitting portion and that locks near the base end portion of the power supply line. The current collector for a trolley according to claim 2, further comprising: