JPS60134900A - Balance regulator in loading arm - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a torque adjusting device for a parsor disposed, for example, between a horizontal rotating arm and a vertical rotating arm.

(Prior Art) Loading arms used for supplying liquid to tank trucks, freight cars, etc. generally have an inboard arm 1 that rotates horizontally and an outboard arm 2 that rotates vertically, as shown in Figure 1. The structure is such that the load on the outboard arm 2 is canceled out by the spring 5 of the parallelizer 4 placed between both arms 1 and 2, making it suitable for long-term use. If the spring force of the spring 5 changes due to this, one of the spring holders integrated with the spring holder should be rotated by attaching a wrench, etc. to the center of the seat 6, and installing a hole around it. ,'fc i L6
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In addition to matching the holes 7a of h 71;, each of these holes 6a
, 7a, the spring receiver is inserted through a port 8 for fixing the seat, and the spring 5 is fixed at the newly tightened position.

However, with such a balance adjustment mechanism, in devices where strong springs are used depending on the length of the outboard arm, two people must work together to wind up the spring 5 and insert and remove the port 8. must be done,
Another problem is that winding up the spring 5 requires a considerable amount of effort.

(Objective) The present invention has been made in view of the above problem, and its purpose is to provide a new balance adjustment device that allows one person to easily adjust the spring and also allows the required amount of adjustment. It's about doing.

(Structure) Therefore, details of the present invention will be described below based on illustrated embodiments.

Fig. 2.3 shows embodiments of the present invention, and the reference numeral 11 in the figure is a double-shaped frame fixed to the swivel joint 3 to hold the spring adjustment mechanism. The upper and lower spring supports that integrally hold the upper ends of the spring 16 respectively have seats 17 and 18 that are rotatably attached to the upper and lower ends of the spring 16. Reference numeral 20 indicates an adjustment bracket in which the lower spring holder is a part of a plurality of screw holes 19 drilled at equal intervals around the seat 18 with bolts 21; A port 22 for adjusting the spring pressure is rotatably supported on its free end protruding outward.
is inserted into the hole 13 of the NAND 2 through the washer 23.
It is stopped by 4.

In addition, the reference numeral 25 in the figure indicates that the upper spring holder is located at one 8B of the seat 17.
The connecting rod 10 connects the outboard arm 2 and transmits the load of the outboard arm 2 to the spring 16, in order to prevent the outboard arm 2 from swinging during refueling.
Each shows a tightening member for fastening a long rod 26 whose one end is connected to a part of the frame 11.

Next, a description will be given of the adjustment operation of the apparatus described above.

First, remove the bolts 15 that fix the seat 18 to the frame 11 and the spring receiver, release the seat 18 from the lower spring receiver, and screw it onto the end of the spring pressure adjustment bolt 22. 24
By rotating the spring holder, the spring 1 is integrated with the seat 18.
Tighten 6. By this operation, the spring 16 increases its tension and balances the load of the outboard arm 2. Next, the hole 14 of the frame 11 and the spring receiver connect to the hole 19 of the seat 18 at a position near the balance. By aligning them and inserting the port 15 there, both can be fixed at a new adjusted position.

If the spring pressure cannot be adjusted sufficiently by the -] operations, the spring holder is fixed once with the bolt 15 at the position where the seat 18 is fully rotated, and then the adjustment bracket 20 is fixed with the -]2 operation. All you have to do is move it to a new position and perform the seaming operation again.

(Effects) As mentioned above, according to the present invention, the loading arm is provided with means for hoisting the spring at a position Np away from its center, so the labor required for hoisting is reduced. The spring can be wound up and fixed safely by a single worker without the need for any scale. Moreover, since the first winding means can be connected to and detached from the spring, it is possible to wind up the required amount, and even if the spring has worn out due to long-term use, it can be easily balanced.

[Brief explanation of drawings]

1A and 1B are a top view and a side view showing an example of a loading arm, and FIGS. 2 and 3 are a side view and a bottom view of an apparatus showing an embodiment of the present invention. l...Import arm 2...Outboard arm 3...Swivel joint 4...Haranza 11...Frame 16...Spring 17.18...・Spring holder is seat 20...Adjustment bra cant 22...Spring pressure adjustment bolt Applicant Tokyo Tatsuno Co., Ltd. Agent Patent attorney Keiji Nishikawa

Claims (1)

[Claims] means for releasably fixing the other end of the spring to a loading arm comprising an arm that swings downwardly and a spring member coupled to the arm at one end to support the load; means for winding up at an off-center position;
A balance adjustment device for a loading arm, wherein the hoisting means is detachably attached to the spring.