JPS62285898A - Device for changing direction of travelling of crane - 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 3. Detailed Description of the Invention (Related Technical Field) The present invention relates to a crane running direction changing device.

(Prior art) A conventional crane traveling direction changing device is equipped with a traveling drive device that also serves as a vertical rod lifting device at four locations on the crane's legs, and operates each traveling drive motor when changing the traveling direction. Since the wheels are supported in a floating manner by pushing down the vertical rod, the structure becomes very complicated and the device becomes extremely expensive.

(Object of the Invention) The present invention was made in order to deal with the problems of the prior art. The purpose is to reduce costs.

(Means for solving the problem) A vertical rod is provided to protrude downward from the crane leg by penetrating both the rocker beam and the rotating seat that is swingably connected to the rocker beam, and is carried and installed directly under the vertical rod. The vertical rod is combined with a hydraulic jack that can be pushed up, and after the crane leg is pushed up via the vertical rod and separated from the rotating seat, the rocker beam or rotating seat, together with the vertical door rod, comes into contact with the rotating mechanism that moves upward. It is characterized by being configured to be supported.

(Example) The following will explain the embodiment shown in one drawing.

Fig. 1 shows an example of a traveling direction change position when the crane is installed on a quay, Fig. 2 is a side view of the land-side traveling mechanical device of the crane to which the present invention is applied, and Fig. 3 shows the crane's sea-side traveling. FIG. 3 is a side view of the mechanical device.

In the figure, 1 is a crane leg end, 2 is a rotating seat provided at the lower end of the crane leg end 1, and 3 is a rocker beam. As shown in FIG. 4, the rotating seat 2 and the rocker beam 3 are swingably connected via a pin 10 and a cap 11 attached to the pin 10. A small rocker beam 4 is connected. A balancer 5 is swingably connected to the small rocker beam 4 or the rocker beam 3. 6 is a wheel attached to the balancer 5, and the wheel 6a is ? ! ! It is driven and rotated by a motive force 7 via a drive device 8 and a transmission mechanism 9.

In such a lane, the present invention provides a crane leg end 1
A vertical rod 12 is attached to the lower end of the crane leg passing through the rotating seat 2 and rocker beam 3, and a bracket 15 is attached to the lower end of the vertical rod 12 of the crane leg whose direction is to be changed by bolts 16.
The rotating bracket 13 and the spherical thrust bearing 14 are rotatably supported on the bracket 15.

The bracket 15, the rotation bracket 13, and the spherical thrust bearing 14 constitute a rotation mechanism that rotatably supports the traveling mechanical device.

Incidentally, the rotation mechanism may be installed at the head of the hydraulic jack 17 that is carried in and installed as shown in FIG. Further, directly below the vertical rod 12 is a predetermined stroke S. A hydraulic jack 17 with a hydraulic jack 17 is brought in and installed, and its upward movement pushes up the crane leg end 1 through the vertical rod 12, and after a slight delay, the traveling machine is supported in a floating manner.

Note that the means for floatingly supporting the rocker beam 3 and rotating seat 2 is not necessarily limited to this method. For example, as shown in FIG. 6, a spherical thrust bearing is attached to a stepped bracket 15a formed on a vertical rod. The rotating seat 2 supporting and engaging the rotating seat 14, and the rocker beam 3 connected to the rotating seat 2 via the cap 11 may be suspended.

(Operation) The configuration of the present invention is as described above, and the operation will be explained next. To change the traveling direction of the crane, the balancer and rocker beams are linked with bolts, turnbuckles, etc. (not shown) and swung against the vertical rods 12 that protrude downward from the crane leg ends 1. (These bolts, turnbuckles, etc. are removed during normal driving).

After that, the hydraulic jack 17 having a stroke S, (=S+82+84) is carried below the bracket 15, and by its upward movement, the leg corner load is first transferred through the lower end surface of the bracket 15 at the extended position of S2. Hydraulic jack 1
It starts reaching 7. Furthermore, due to the stroke of the S-work, the hydraulic jack 17 moves to the bracket 15. As the crane leg end 1 is further pushed up via the vertical rod 12, the joint surface C between the rocker beam 3 and the rotating bracket 13 comes into contact, and the weight of the traveling machine is transferred via the bracket 15, the spherical thrust bearing 141, and the rotating bracket 13. Hydraulic jack 1
It starts to take 7. At this time, the mating surfaces of the upper surface of the rotary seat 2 and the upper and lower surfaces of the crane legs are separated, creating a gap S3. This gap S3 corresponds to the stroke operation of the hydraulic jack 17.

Furthermore, the hydraulic jack 17 is stroke operated (S4) to enable the wheel jaw to move laterally on the rail.

In this state, since no crane leg corner load is applied to the traveling machinery, the force required to shift the traveling machinery is due to the resistance in the spherical thrust bearing 14 due to the excess weight of the traveling machinery and the drive system. There is only resistance on the sliding surface of the bushing 2a and the spherical thrust wire receiver 14 due to eccentric loads such as 7, 8, 9, etc.

Therefore, by pushing the tip end of the traveling machine with a force of about human power, the traveling machine can be turned in any direction relative to the crane leg 1. There are four crane leg corners for one crane, and the direction of the traveling mechanical device is changed in the manner described above at each crane leg corner.

When actually changing the running direction, since there is a lap between the flange of the running axle 6 and the running rail as shown in Figure 5-A, the gap between the ground surface or the upper surface of the running rail and the outer circumference of the wheel flange is S, (approximately 20IlI11).

After changing direction, after jacking down, remove the bolts that fix the balancer and rocker beam, and the turnbuckles that adjust the tilt due to the eccentric weight of the drive system 7, 8, 9, etc., so that it can be driven normally. Become.

(Effects) As described in detail above, according to the present invention, the equipment necessary for changing the travel direction and attached to the lane main body is kept to a minimum of the one-turn seat and the vertical rod, and the crane leg is pushed up via the vertical rod. After moving away from the rotating seat, the rocker beam or the rotating seat contacts and is supported by a rotating mechanism that moves upward together with a vertical rod, and the wheel is turned by the worker's push and turn. The structure is extremely simple, which greatly reduces equipment costs, and when used in combination with a portable hydraulic jack, it is possible to easily change the traveling direction of the crane.

[Brief explanation of the drawing]

Fig. 1 shows an example of a traveling direction change position when the crane is installed on a quay. FIG. 2 is a side view of a land-side traveling mechanical device of a crane to which the present invention is applied. Figure 3 is a side view of the seaside traveling machine. FIG. 4 is a cross-sectional view of the main part of the vertical rod mounting part during jacking down. FIG. 4-A is a sectional view taken along line A-A in FIG. 4. FIG. 5 is a cross-sectional view of the main part of the vertical rod mounting part during jacking up. FIG. 5-A is a diagram showing the relationship between the ground surface or the upper surface of the traveling rail and the outer periphery of the axle flange during jacking up. FIG. 6 shows a different embodiment corresponding to FIG. FIG. 7 shows a different embodiment corresponding to FIG. 5. FIG. 8 shows a partial modification. In the figure: 1 Crane leg end 2 Rotary seat 2a Bush 3 Rocker beam 4 Small rocker beam 5 Balancer 6.6a Axle 7 Electric motor 8 Drive device 9 Transmission mechanism 10 Bin 11 Cap 12
Vertical lot 13 Rotating bracket] 4 Spherical thrust bearing 15.15a Bracket 16 Bolt 17 Hydraulic jack and above Applicant Sumitomo Heavy Industries Co., Ltd. Sub-Agent Patent Attorney Isamu Ohashi Figure 6 Figure 7

Claims (1)

[Claims] A vertical rod is provided extending downward from the crane leg by penetrating both the rocker beam and the rotating seat that is swingably connected to the rocker beam, and a hydraulic system is installed directly below the vertical rod and is capable of pushing the vertical rod upward by upward motion. In combination with the jack, after the crane leg is pushed up via the vertical rod and separated from the rotating seat, the rocker beam or rotating seat is configured to come into contact with and be supported by a rotating mechanism that moves upward together with the vertical rod. A crane running direction changing device characterized by: