JP2020131730A - Drawing transport device of spring type tension balancer - Google Patents

Abstract

To provide a drawing transport device of a spring type tension balancer which enables balancer tension adjustment work, transportation to an installation side, and installation operation to be efficiently performed.SOLUTION: A drawing transport device 1 includes a frame 100, a draining member 200, and a fixing member 300. The frame 100 includes: an outer cylinder support part 120 which fixes and holds an outer cylinder 410 horizontally; and cylinder engagement parts 130, 131 which engage a hydraulic cylinder 220. The drawing member 200 includes: a drawing metal fitting 210 which is detachably attached to a tip of an inner cylinder 420; and the hydraulic cylinder 220 which is detachably attached between the drawing metal fitting 210 and the cylinder engagement parts 130, 131. The fixing member 300 includes: a fixing yoke 310 which is detachably attached to the tip of the inner cylinder 420 drawn by the drawing member 200; and a tension member 320 disposed between the fixing yoke 310 and a tip of the outer cylinder 410.SELECTED DRAWING: Figure 9

Description

The spring-type tension balancer requires a step of pulling out the inner cylinder from the outer cylinder by a predetermined length in advance against the spring force so that a predetermined tension can be obtained when the balancer is installed. The present invention is used as a support stand for work in a pull-out process of an inner cylinder in a balancer storage facility or the like, and is used as a transport stand for transporting the tension balancer to an installation site as it is after the pull-out process is completed. The present invention relates to a pull-out transfer device for a spring-type tension balancer.

Conventionally, in a facility with necessary equipment such as a manufacturing factory in advance, the inner cylinder is pulled out to the desired length from the outer cylinder so that the spring type tension balancer can be connected to the overhead line without adjusting the tension at the installation site. Tension adjustment is performed. After the tension is adjusted, the tension balancer is transported to the installation site with the outer cylinder and the inner cylinder fixed by the fixing device. The fixing device is removed after the tension balancer is connected to the overhead wire. As this fixing device, the one described in Patent Document 1 is known.

This device is detachably interposed between the outer cylinder (casing) and the inner cylinder (rod) of the spring-type tension balancer, and the contact member that contacts the end of the outer cylinder and this contact. One end is connected to the member, both sides of the inner cylinder extend in parallel with this by a predetermined length, and a pair of resistance rods extend in the direction orthogonal to the axis of the inner cylinder, and the middle part is engaged with the clevis (puller) of the inner cylinder. It is provided with a fixing yoke that is stopped and connected to the other ends of the pair of counter-pressure rods at both ends. By attaching the fixing device to the tension balancer, the state in which the inner cylinder is pulled out from the outer cylinder against the spring force is maintained by the resistance rod until a predetermined tension for the train line is obtained. If the fixing device is removed after installing the tension balancer, the tension balancer will hold the train line with a predetermined tension.

Japanese Unexamined Patent Publication No. 2004-42780

Since the tension adjusting work of the tension balancer requires necessary equipment, it is not possible to perform the tension adjusting work in the facility where the tension balancer is stored after being delivered from the manufacturing factory. For this reason, conventionally, the tension balancer is returned to a manufacturing factory or the like having the required equipment to adjust the tension, and then transported from there to the installation site. The tension balancer is transported from the manufacturing plant to the installation site in a state where it is mounted on the pallet with the tension indicator facing upward so as not to damage the attached tension indicator. Since the tension balancer needs to be installed with the tension indicator facing downward, the tension balancer must be lifted to a high place by changing the vertical direction by 180 ° during the installation work. At this time, it is necessary to proceed with the work carefully so as not to damage the indicator, which is a factor of lowering the work efficiency.
Therefore, the first object of the present invention is that the tension adjusting work can be easily performed in a storage facility other than the manufacturing factory by supporting the tension balancer, and the transportation and the installation work from there to the installation site can be efficiently performed. It is to provide a pull-out transfer device for a spring-loaded tension balancer that can be performed in. A second object of the present invention is, in addition, to provide a pull-out transfer device for a spring-type tension balancer capable of transporting and installing a tension balancer without damaging the indicator.

Hereinafter, the description will be made with reference to the reference numerals in the accompanying drawings, but the present invention is not limited thereto.
In order to solve the above problems, the pull-out transfer device 1 of the spring-type tension balancer of the present invention is pulled out from a stand 100 for holding the balancer 400 and a pull-out member 200 for pulling out the inner cylinder 420 from the outer cylinder 410 to a desired position. It is provided with a fixing member 300 that allows the withdrawal member 200 to be removed by fixing the inner cylinder 420 to the outer cylinder 410. The gantry 100 includes an outer cylinder support portion 120 that horizontally fixes and holds the outer cylinder 410, and cylinder locking portions 130 and 131 that detachably lock the hydraulic cylinder 220 of the drawer member 200. The drawer member 200 includes a drawer metal fitting 210 that is detachably fixed to the tip of the inner cylinder 420, and a hydraulic cylinder 220 that is detachably fixed between the drawer metal fitting 210 and the cylinder locking portions 130 and 131. Equipped. The fixing member 300 is detachably fixed to the tip of the inner cylinder 420 pulled out to a desired pull-out position by the pull-out member 200, and is between the fixed yoke 310 and the tip of the outer cylinder 410. It includes a tension member 320 that is detachably interposed.

According to the pull-out transfer device 1 of the spring-type tension balancer of the present invention, the inner cylinder 420 is easily pulled out from the outer cylinder 410 by the pull-out member 200 while the tension balancer 400 is supported on the gantry 100, and the tension is adjusted. After the adjustment, the inner cylinder 420 is fixed to the outer cylinder 410 by the fixing member 300, the drawer member 200 is removed, and the tension balancer 400 is fixed on the gantry 100 as it is and transported to the installation site. ..

It is a front view of the gantry in the pull-out transport device of the spring type tension balancer which concerns on this invention. It is a top view of the frame of the drawer transport device of FIG. It is a side view of the frame of the drawer transport device of FIG. FIG. 1 is a perspective view taken along the line IV-IV of FIG. It is a VV arrow view of FIG. FIG. 1 is a view taken along the line VI-VI of FIG. It is a part of the plan view which shows the drawer operation by the drawer transfer apparatus of FIG. 1 step by step. It is a part of the plan view which shows the drawer operation by the drawer transfer apparatus of FIG. 1 step by step. It is a part of the plan view which shows the drawer operation by the drawer transfer apparatus of FIG. 1 step by step. It is a part of the plan view which shows the drawer operation by the drawer transfer apparatus of FIG. 1 step by step. It is a part of the plan view which shows the drawer operation by the drawer transfer apparatus of FIG. 1 step by step. It is a part of the plan view which shows the drawer operation by the drawer transfer apparatus of FIG. 1 step by step. It is a side view of the drawer transport device in the state of FIG. It is a side view of the drawer transport device in the state of FIG.

Embodiments of the present invention will be described with reference to the drawings.
In FIGS. 1 to 3, the spring-type tension balancer 400, which adjusts the tension by using the pull-out transfer device 1 and transfers the tension, has a built-in spring, and the rear proximal end side is locked to a support structure (not shown). The outer cylinder 410 and the outer cylinder 410 are nested and inserted into the outer cylinder 410 so that the front tip protrudes toward the tip side of the outer cylinder 410, and the built-in spring pulls the outer cylinder 410 toward the base end side. It is a known tension balancer provided with an inner cylinder 420 to be urged, and an overhead wire (not shown) is connected to the front tip side of the inner cylinder 420 to apply a constant tension to the overhead wire. The inner cylinder 420 includes an inner cylinder pull-out length indicator 421 that extends downward in the radial direction from the front end portion and extends rearward along the outer circumference of the outer cylinder 410 in the axial direction. The tension balancer 400 is installed with the indicator 421 facing downward so that it can be visually recognized from below. The inner cylinder 420 includes a clevis 422 on the tip side. The clevis 422 has first and second vertical locking holes 422a and 422b arranged in the front-rear direction of the inner cylinder 420 in the axial direction.

As shown in FIGS. 7 to 14, the drawer transport device 1 is pulled out by a drawer member 200 including a gantry 100 for holding the balancer 400 and a hydraulic cylinder 220 for pulling out the inner cylinder 420 from the outer cylinder 410 to a desired position. It is provided with a fixing member 300 that allows the withdrawal member 200 to be removed by fixing the inner cylinder 420 to the outer cylinder 410.

As shown in FIGS. 1 to 6, the gantry 100 includes a steel gantry main body 110 having a rectangular parallelepiped truss structure with an open upper portion, an outer cylinder support portion 120 for horizontally fixing and holding an outer cylinder 410, and a drawer member. It includes cylinder locking portions 130 and 131 that detachably lock the 200 hydraulic cylinder 220. A pair of cylinder locking portions 130 are provided on the rear left and right, and a pair of cylinder locking portions 131 are provided on the front left and right.

A plurality of outer cylinder support portions 120 are fixed to the inside of the gantry main body 110 so as to horizontally mount the outer cylinder 410 of the balancer 400. The outer cylinder support portion 120 is arranged separately on the left and right so as not to interfere with the indicator 421, and horizontally supports the balancer 400 at a height position where the indicator 421 faces downward and the indicator 421 does not touch the ground. A front end contact portion 140 is provided at the front end portion of the outer cylinder support portion 120 at the frontmost portion. The front end contact portion 140 restrains the forward movement of the balancer 400 by abutting the left and right sides of the lower half of the front end portion of the outer cylinder 410 mounted on the outer cylinder support portion 120.

As shown in FIGS. 7 and 10, the drawer member 200 is detachably attached between the drawer metal fitting 210 which is detachably fixed to the tip end portion of the inner cylinder 420 and the drawer metal fitting 210 and the cylinder locking portions 130 and 131. It is provided with a pair of hydraulic cylinders 220 fixed to.

The pull-out metal fitting 210 penetrates the clevis 422 horizontally in the left-right direction orthogonal to the axis of the inner cylinder 420, is locked to the first locking hole 422a of the clevis 422 at the intermediate portion by a bolt 211, and is locked at both ends. The piston rods 221 of the pair of hydraulic cylinders 220 can be connected.

The hydraulic cylinder 220 has a flange portion 222 locked to the cylinder locking portions 130 and 131, and is installed along the left and right side surfaces of the balancer 400 in parallel with the axis thereof.

In the illustrated embodiment, the hydraulic cylinder 220 is relatively small in size due to a request for miniaturization of the gantry. Therefore, when the pull-out length of the inner cylinder 420 is insufficient for the extension length of the hydraulic cylinder 220, the pull-out operation is performed in two steps.

That is, as shown in FIG. 7, when the hydraulic cylinder 220 is locked to the rear cylinder locking portion 130 and the first-stage pull-out operation is performed, as shown in FIG. 8, the inner cylinder 420 is formed by the fixing member 300. Is fixed to the outer cylinder 410, the hydraulic cylinder 220 is removed from the rear cylinder locking portion 130, and the locking position is moved to the front cylinder locking portion 131 as shown in FIGS. 9 and 10, and the second It is configured to perform a stepwise withdrawal operation. Therefore, as shown in FIG. 3, the installation position of the rear cylinder locking portion 130 and the front cylinder locking portion 131 is set at the center of the balancer 400 so as not to cause interference during the attachment / detachment operation of the hydraulic cylinder 220. It is offset by 180 ° around the axis. Therefore, as shown in FIGS. 13 and 14, the drawer metal fitting 210 is rotated by 180 ° and fixed to the clevis 422 when the locking position of the hydraulic cylinder 220 is changed.

If the pull-out length of the inner cylinder 420 is sufficient for the extension length of the hydraulic cylinder 220, only one pair of cylinder locking portions 130 and 131 is sufficient, and the pull-out operation divided into two times is unnecessary.

As shown in FIG. 8, the fixing member 300 fixes the inner cylinder 420 to the outer cylinder 410 at the drawer position, and is interposed between the inner cylinder 420 and the outer cylinder 410 pulled out to the desired drawer position. Will be done. The fixing member 300 includes a fixing yoke 310 fixed to the clevis 422 on the tip end side of the inner cylinder 420, and a tension member 320 interposed between the fixing yoke 310 and the tip end portion of the outer cylinder 410.

The fixed yoke 310 penetrates the clevis 422 horizontally in the left-right direction orthogonal to the axis of the inner cylinder 420, and is locked to the second locking hole 422b of the clevis 422 at the intermediate portion by a square pin 311.

The tension member 320 includes a contact member 321 and a pair of stretchable tension rods 322. The contact member 321 is made of a plate material having a substantially semicircular arc shape, and is arranged so as to contact the upper half of the tip portion of the outer cylinder 410. One end of the pair of tension rods 322 is fixed to the contact member 321 and the other end is connected to both ends of the yoke 310. The tension rod 322 extends forward in parallel with the inner cylinder 420 by arranging the left and right outer sides of the inner cylinder 420 horizontally in the installed state.

The pull-out process of the inner cylinder 420 using the pull-out transfer device 1 of the illustrated embodiment will be described.

As shown in FIGS. 1 to 6, the balancer 400 is set on the drawer transfer device 1. At this time, the indicator 421 of the balancer 400 is directed downward, the clevis 422 is arranged horizontally, and the tip of the outer cylinder 410 is brought into contact with the front end contact portion 140.

Next, as shown in FIGS. 7 and 13, the hydraulic cylinder 220 is locked to the first cylinder locking portion 130, and the drawer metal fitting 210 is fixed to the locking hole 422a of the clevis 422 with a bolt 211. Both ends are connected to the piston rod 221. The hydraulic cylinder 220 is connected to a hydraulic machine (not shown), and the inner cylinder 420 is pulled forward by a predetermined length as shown by a virtual line.

Next, while applying hydraulic pressure, as shown in FIG. 8, the fixing yoke 310 is attached to the second locking hole 422b of the clevis 422 with the square pin 311 and the contact member 321 of the tension member 320 is attached to the outer cylinder 410. The length of the tension rod 322 is adjusted by bringing it into contact with the tip, and the tip is connected to both ends of the fixing yoke 310. As a result, the inner cylinder 420 is fixed to the outer cylinder 410 at a predetermined drawer position. After the inner cylinder 420 is pulled out to a desired length by this pull-out operation, the hydraulic pressure of the hydraulic cylinder 220 is released, the piston rod 221 is removed from the pull-out metal fitting 210, and the hydraulic cylinder 220 and the drawer metal fitting 210 are removed. As shown, the withdrawal process is complete.

When a second-stage pull-out operation is required, as shown in FIG. 14, the pull-out metal fitting 210 is rotated 180 ° and connected to the clevis 422, and as shown in FIG. 9, the hydraulic cylinder 220 is connected to the second stage. It is locked to the locking portion 131, and the tip of the piston rod 221 is connected to the drawer metal fitting 210. After pressurizing the hydraulic cylinder 220 to slightly project the piston rod 221 and confirming that the load of the balancer 400 has been transferred to this, the tension rod 322 is removed from the fixed yoke 310, and the hydraulic cylinder 220 is removed as shown in FIG. Pressurize again, perform the second-stage pull-out operation, and pull out the inner cylinder 420 to a desired position.

When the pull-out operation of the second stage is completed, as shown in FIG. 11, the fixing yoke 310 is reattached to the second locking hole 422b of the clevis 422 with the square pin 311 and the contact member 321 of the tension member 320 is removed. By contacting the tip of the cylinder 410, adjusting the length of the tension rod 322, and connecting the tip to both ends of the fixing yoke 310, the inner cylinder 420 is fixed to the outer cylinder 410 at a desired pull-out position. ..

Next, the hydraulic pressure of the hydraulic cylinder 220 is released, and as shown in FIG. 12, the piston rod 221 is removed from the drawer fitting 210, and the hydraulic cylinder 220 and the drawer fitting 210 are removed.

The work up to this point can be performed in the storage facility of the balancer 400 by using the drawer member 200 and the fixing member 300 attached to the gantry 100.

The balancer 400 is fixed to the gantry 100 with a belt or the like in the state shown in FIG. 12 in which the inner cylinder 420 is pulled out from the outer cylinder 410 having a predetermined length by the pull-out operation of the first stage or the second stage, and in this state, the gantry 100 The balancer 400 is transported to the installation site.

At the installation site, the balancer 400 is released from the restraint on the gantry 100 on the ground, the balancer 400 is lifted to a predetermined mounting height position with the fixing member 300 attached, and the rear end side of the outer cylinder 410 is connected to a support (not shown). At the same time, the tip side of the inner cylinder is connected to an overhead line such as a train line (not shown) to transfer the load to the overhead line, and then the fixing member 300 is removed to complete the installation of the balancer 400. Since the balancer 400 is held by the gantry 100 in the same vertical direction as the installation posture with the indicator 421 facing downward, the step of overturning the posture of the balancer 40 up and down is unnecessary in the installation work.

1 Pull-out transfer device 100 Stand 110 Stand body 120 Outer cylinder support 130 First cylinder locking 131 Second cylinder locking 140 Front end contact 200 Pull-out member 210 Pull-out bracket 211 Bolt 220 Hydraulic cylinder 221 Piston rod 222 Flange 300 Fixing member 310 Fixing yoke 311 Square pin 320 Tension member 321 Contact member 322 Tension rod 400 Spring type tension balancer 410 Outer cylinder 420 Inner cylinder 421 Indicator 422 Clevis 422a First locking hole 422b Second locking hole

Claims (4)

An outer cylinder that has a built-in spring and the rear base end side is locked to the support structure, and the spring that is nested inside the outer cylinder and is arranged so that the front tip protrudes toward the tip side of the outer cylinder. The inner cylinder of a spring-type tension balancer is provided with an inner cylinder that is urged in a direction of being pulled toward the base end side of the outer cylinder, and an overhead wire is connected to the tip side of the inner cylinder to apply a constant tension to the overhead wire. Is a device for transporting the spring to the installation site with the spring pulled out from the outer cylinder to the desired position.
A gantry for holding the balancer, a drawer member including a hydraulic cylinder for pulling out the inner cylinder from the outer cylinder to a desired position, and removal of the drawer member by fixing the pulled out inner cylinder to the outer cylinder. Equipped with a fixing member that allows
The gantry includes an outer cylinder support portion that horizontally fixes and holds the outer cylinder, and at least a pair of cylinder locking portions that detachably lock the hydraulic cylinder.
The drawer member includes a drawer metal fitting that is detachably fixed to the tip end portion of the inner cylinder, and at least a pair of the hydraulic cylinders that are detachably fixed between the drawer metal fitting and the cylinder locking portion. And
The fixing member includes a fixing yoke that is detachably fixed to the tip of the inner cylinder that has been pulled out, and a tension member that is interposed between the fixing yoke and the tip of the outer cylinder. A pull-out transfer device for a spring-loaded tension balancer. The inner cylinder includes an indicator of the inner cylinder pull-out length extending downward in the radial direction from the front tip portion and extending rearward in the axial direction along the outer circumference of the outer cylinder.
The gantry includes a steel gantry body with a rectangular parallelepiped truss structure with an open top.
A plurality of the outer cylinder support portions are fixed to the inside of the gantry body so that the outer cylinder is horizontally mounted at a height position where the indicator is not grounded with the indicator facing downward. Item 2. The pull-out transfer device for a spring-type tension balancer according to item 1. The inner cylinder is provided with a clevis having first and second vertical locking holes arranged in the front-rear direction in the axial direction thereof on the tip side.
The cylinder locking portion of the gantry is arranged so as to hold the hydraulic cylinder so as to extend both outer sides of the inner cylinder in the front-rear direction in parallel with its axis.
The drawer metal fitting penetrates the clevis in the left-right direction orthogonal to the axis of the inner cylinder, is locked in the first locking hole of the clevis at the intermediate portion, and piston rods of the pair of hydraulic cylinders are engaged at both ends. Configured to be connectable,
The fixed yoke penetrates the clevis horizontally in the left-right direction orthogonal to the axis of the inner cylinder, and is locked in the second locking hole of the clevis at the intermediate portion.
The tension member has an abutting member that abuts on the tip end side of the outer cylinder, and one end of the abutting member is connected to the abutting member so that the left and right outer sides of the inner cylinder are horizontally aligned and extend parallel to the inner cylinder, and the other end is the yoke. The drawer-conveying device for a spring-type tension balancer according to claim 1, further comprising a pair of tension rods having adjustable lengths connected to both ends of the spring-type tension balancer. The gantry includes a first cylinder locking portion arranged at the rear and a second cylinder locking portion arranged at the front.
The hydraulic cylinder is configured so that the locking position can be changed from the first cylinder locking portion to the second cylinder locking portion, whereby the inner cylinder can be pulled out from the outer cylinder in two stages. The pull-out transfer device for a spring-type tension balancer according to claim 1, wherein the spring-type tension balancer is configured in the above.

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