JPH0454058Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention applies emergency braking to a bogie that moves up and down along a rail installed on an inclined passage when it suddenly falls due to a breakage of the towing wire or other accident. It is related to the device.

[Prior Art and Problems] Japanese Patent Application No. 135718/1983 discloses a transportation device for transporting heavy electrical equipment into and out of an underground substation room using stairs leading from the ground to the basement of a building. The trolley, which ascends and descends along two rails temporarily installed on the stairs, is composed of an inclined base plate and a horizontal base plate, so that heavy objects can always be loaded on the horizontal base plate, and the gentle lifting of the trolley is carried out using a traction wire By driving a winch connected to. However, if the trolley suddenly descends due to wire cutting or other accidents, there is no way to brake it, so workers are constantly worried about the risk of death, injury, or damage to the structure due to the collision. .

[Means for solving the problem] Transformers and other equipment stored in the basement of a building are all heavy. Although the utmost care is taken when transporting such objects, safety devices are becoming necessary for transport equipment in anticipation of unexpected accidents such as sudden drops.

In the present invention, a pawl member is inserted into the U-shaped rail that guides the rollers of the trolley, the vertical gap of the U-shape is made small, and the roller bites into this and stops. Also,
Even in the worst case, the rollers would be braked due to energy loss due to passage of the pawl member and deformation of the rail.

[Example] The drawings will be explained. Two rails R are temporarily installed on the inclined passageway, and the cart C moves up and down along these rails. The rails are U-shaped and open on the outside. The rollers K of the truck engage with the rails with an appropriate gap.

The trolley is connected to a winch on the ground via a wire W, and is moved up and down the inclined path.

Both ends of the crossbeam 1 are welded to the lower back surfaces of both rails. One side of the hinge 2 is fixed to the crossbeam 1,
A receiver 3 is fixed to the other rotatable side.

In the embodiment, the pawl member is formed into a block 4 having a triangular cross section, the front end of which is connected to the lower side of the rail, and the rear end of which is raised from the lower side. A block 4 having a triangular cross section is fixed to the tip of the receiver, and a window 5 is provided on the side of the rail to allow the block 4 to rotate in and out. When the receiver 3 comes into contact with the stopper 6 provided on the crossbeam due to rotation, that is, when the block 4 is in the solid line position in Figure 2, the front end of the block connects to the lower side of the rail,
The rear end is raised from the lower side. Block 4 is 90
When it rotates once and is at the position indicated by the chain line in Figure 2, it separates from the U-shaped rail. A torsion spring (not shown) is attached to the shaft of the hinge 2, and is normally biased to keep the block in the solid line position.

The central part of FIG. 2 shows the block delivery/input operation device. An operation plate 7 is fixed to the crossbeam 1, and a cylinder 8 is attached to it.
is fixed. The operating rod 9 passes through the cylinder 8, has a ring 9a at one end, a grip 9b at the other end, and a pin 9c in the center. pin 9
c is engaged with a long groove 8a bored in the cylinder. The rope 10, which has one end locked to the receiver 3, has the other end tied to a ring 9a via a pin 7a provided on the operation plate 7. When the operating rod is moved in and out, the left and right blocks rotate in synchronization and move in and out of the rail. When the block is in the solid line position, the pin 9c is at the upper end of the long groove 8a.

When the block is in the chain line position, the pin is at the lower end, and a horizontal notch for temporary fixing is provided at the lower end of the long groove.

The present invention is constructed as described above. When the bogie, which is slowly descending from above the rail, approaches the bottom end, when the operating rod 9 is pulled, the block moves to the position shown by the chain line and the bogie passes freely. After this, loosen the operating rod and return the block to the solid line position.If you want to slowly raise the trolley from underground, there is no need to operate the operating rod, just push the block forward against the torsion spring attached to the hinge. For this case, it is advisable to provide a push plate (not shown) on the rear surface of the block that can come into contact with the carriage.

Apart from the above, if the cart suddenly descends, the rollers will dig into the top of the triangular block and stop. Even if the slope is steep and the load to be transported is heavy, the rollers may climb over the block due to the sudden drop and be pushed up and deformed onto the top of the rail.
Since a large amount of energy is lost by passing through the block and deforming the rail, there is little risk of causing catastrophic damage afterwards.

Another embodiment of the triangular block feeding/unloading device is shown in FIG. A triangular block 4 is fixed to the front part of the receiver 11, and a rope 10 is locked to the rear part.
A coil spring 13 is inserted between a spring receiver 12 provided on a crossbeam and a receiver 11. The rope 10 passes through the spring 13 and the spring receiver 12, and its other end is locked to the ring 9a. In this structure, the blocks move forward and backward in a straight line, so the window 5 on the side of the rail can be made smaller.
However, even when ascending slowly, the operating rod must be pulled before the bogie enters. The shape of the block is not limited to a triangular cross section, but may be a rectangular parallelepiped, a round bar, or any other shape that provides a stopping action.

[Effect] When the cart suddenly falls, the rollers are stopped by the wedge action of the pawl member, and even if the impact load at the time of the fall is large, most of the energy is absorbed and the rollers are stopped within the rail.

In this way, a large braking force can be obtained by the wedge structure, and as a result, the rail and the braking device can be made lightweight and compact.

[Brief explanation of the drawing]

Fig. 1 is a side view of the inclined passageway, Fig. 2 is a plan view of the present invention, Fig. 3 is a front view of the vicinity of the triangular block, Fig. 4 is a side view of the same, and Fig. 5 is a plan view of another embodiment. It is. 1... Crossbeam, 2... Hinge, 3... Receipt, 4...
Triangular block, 5...window, 6...stopper, 7...
...Operation plate, 7a...Pin, 8...Cylinder, 8a...
Long groove, 9...operating rod, 9a...ring, 9b...
Grip, 9c...pin, 10...rope, 11...
Receiver, 12...Spring receiver, 13...Coil spring,
R...Rail, C...Dolly, K...Roller, W...
...Wire.

Claims (1)

[Scope of utility model registration request] In a slope transportation device consisting of two parallel rails temporarily installed on an inclined path with an outer open U shape, and a cart fitted with a small gap between the rails and equipped with rollers that can roll along the rails, both rails are A crossbeam whose both ends are fixed to both rails near the lower end, and a pawl member and crossbeam whose front end is below the center of the roller of the bogie and protrudes from the bottom of the rail, allowing entry and exit through a window cut into the side of the rail. An emergency braking device for a bogie, which is comprised of an attached feeding/unloading device that feeds a pawl member to a predetermined position on a rail or removes it onto a crossbeam.