JPS6027167Y2 - Strain relief device for gravity transport equipment - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a device for relieving tension acting on the connecting portion of a unit truck in a gravity-type earth and sand transportation device that transports earth and sand using gravity without using a power source.

As shown in FIGS. 1 and 2, the applicant previously proposed a slope view a.
The unit bogie C is connected to the coupler d on the endless track installed along the
Endless trolleys E connected in an endless manner are installed so that they can travel freely, earth and sand is loaded onto the unit trolley C from the higher side of the endless track, lowered by gravity, and discharged from the lower side, resulting in an empty unit. We have proposed a system in which the cart C is moved to the high place using the downward energy of the load unit cart C that descends from the high place.

However, with this structure, the empty cargo unit truck is pulled up by the downward force of the cargo unit truck due to gravity, and this force is transmitted through the coupler, so that a large tension is applied to the coupler.

This tension increases as the coupler connects unit vehicles traveling at higher elevations.

For this reason, when there is a long-distance ridge height difference, the tension gradually increases and eventually the coupler breaks.

The present invention was developed in view of the above circumstances, and its purpose is to provide a tension relief device for a gravity-type earth and sand transportation device that can relieve the tension acting on the coupler of a unit truck.

Embodiments of the present invention will be described below with reference to FIG. 3 and subsequent figures.

An endless track 2 such as an endless rail is installed along the slope 1, forming a downward track 2a and an upward track 2b, and a unit truck 3 such as a trolley is connected to a connecting member 4 on the endless track 2. An endless trolley 5 is provided which is connected in an endless manner via a movable carriage.

A hopper 7 equipped with a stock pile 6 is provided at the bent portion 2' on the high side of the endless track 2, and a hopper 7 is provided with a stock pile 6 so that earth and sand can be dropped and loaded onto the unit truck 3, thereby forming an earth and sand loading mechanism 8. ing.

Further, a guide rail 9 is provided which is curved upward along the lower bent portion 2'' of the endless track 2.

As shown in FIG. 4, the unit truck 3 has a structure in which a vessel 12 is swingably attached to a traveling body 11 equipped with 1° wheels with a pin 13 in a direction perpendicular to the traveling direction.
2 is provided with an auxiliary wheel 14 in contact with the guide rail 9, a door 15 is attached to the vessel 12 with a pin 16 so as to be openable and closable, and a connecting rod 17 is swingably supported on the door 15 and the traveling body 11. are connected to each other via a link mechanism 18, and when the auxiliary wheels 14 ride on the guide rail 9, the vessel 12 is tilted and the door 15 is opened.

Then, the earth and sand in the vessel 12 is discharged and loaded onto the purge ship 19.

In Figure 3, 20.20 indicates the strain relief device, and the descending track 2
As shown in FIG.
The drive mechanism B provided at
The braking mechanism A provided on the upper track a and the drive mechanism B provided on the upward track 2B are connected by a connecting shaft C to brake the load unit truck 3 traveling on the lower downward track 2a, and the braking force is transferred to the upward link via the connecting shaft C. The signal is configured to be transmitted to the empty unit truck 3 on the track 2b.

On the other hand, the pair of unit bogies 3, 3 are connected via a coupler 4 as shown in FIG. 6, but since the coupler 4 has play, for example, in FIG. By receiving the braking force from the mechanism A, the unit truck 3, which is traveling at a higher place than the brake mechanism A (Fig. 5 A), is lowered by gravity, so the play in the coupler 4 is closed and its length becomes 11. Since the unit truck 3 traveling at a location lower than A (FIG. 5A) is similarly lowered by gravity, the play in the coupler 4 opens and its length becomes 12 degrees.

However, when 12>11, f2-/ becomes equal to the play of the coupler.

Note that the same applies to the upward trajectory 2b. Next, details of the tension relaxation device will be explained.

7 to 16 are detailed explanatory views of the braking mechanism A, in which a frame 30 is attached to the inclined surface 1.

The frame body 30 connects a pair of left and right lower frame members 31 and 31 with a plurality of lower cross members 32, and has a support 3 at the end of each lower frame member 31.
3 are each erected, and a pair of left and right upper frame members 34 are horizontally connected across the support 33, and a pair of left and right tracks 35 and 35 are attached to the left and right upper frame members 34 with holding pieces 36 and bolts. 37, the fastening is fixed, and the track 35 connects to the discontinuous part of the downward trajectory 2a and continues the downward trajectory 2a.

First and second idlers 4 are provided on both sides of the frame 30 in the longitudinal direction.
0. ．． 40□ is rotatably supported, and the third,
Fourth idler 403, 40. A sprocket 41 is rotatably supported between the third and fourth idlers 403 and 404, and a chain 50 is wound around the idler 40 and sprocket 41.

That is, as shown in FIG. 11, the first idler 401 is fixed via a key 45 to a shaft 44 which is horizontally supported rotatably by a pair of left and right brackets 42, 42 via bearings 43, and the teeth thereof are It protrudes above the track 35.

Further, as shown in FIG. 12, the second idler 40° is rotatably mounted via a bearing 49 on a shaft 48 that is fitted between the elongated holes 47 of a pair of left and right brackets 46 and 46 so as to be slidable in the longitudinal direction. The shaft 48 is attached to the bracket 46 and its teeth protrude upward from the track 35, and the shaft 48 is movable along the elongated hole 47 by a bolt 51 screwed into the bracket 46, so that the tension of the chain 50 can be adjusted. be.

Also, 3rd. Fourth idler 403, 40. As shown in FIG. 13, a key 56 is attached to a shaft 55 rotatably supported via bearings 54, 54 on a pair of intermediate frame members 53, 53, which are horizontally suspended between a pair of left and right intermediate columns 52, 52, respectively. Fixedly installed,
Said 1st. The diameter is smaller than the second idler 40□, 40°.

Further, the sprocket 41 is connected to a pair of intermediate frame members 57.5, which are horizontally suspended between the intermediate columns 52, as shown in FIG.
A key 6 is attached to a shaft 59 supported between bearings 5B and 58 between
0, and a brake disc 61 is bolted to the shaft 59.
A caliper 62 for tightening the brake member 1 is fixed to the one intermediate frame member 57 to constitute a disc brake 63.

One end of the shaft 59 protrudes outside the mounting frame and has a transmission sprocket 64 fixed thereto, and the transmission sprocket 64 is connected to the input sprocket 6 of the speed increasing mechanism 66 via a chain 65.
7, and the output sprocket 68 is connected to a generator 70 via a chain 69.

A pair of left and right first. Second guide rails 71 and 72 extend in the longitudinal direction, and the first guide rail 71 is connected to each bracket 42.
．． The second guide rail 72 is bolted to the horizontal frame 73 between the left and right pair of upper frame members 34 and 34, and has a downward guide surface 71a. The third guide rail 74 has a horizontal guide surface 72a, and a third guide rail 74 having a downwardly inclined slope 72'a is continuously attached to the exit side of the guide surface 72a.

The chain 50 has a structure in which unit links 72 are connected endlessly by a pin 76, and a roller 77 that meshes with the teeth of the idler 40 and sprocket 41 is provided on the pin 76.

The chain 50 has claw members 80 arranged at a predetermined pitch P1. P
2. P3. P4 is provided with a plurality of parts that can be rotated up and down. Second. 3rd pin 90□, 90°,
It is adapted to be locked with 903.

As shown in FIGS. 11, 15, and 16, the claw member 80 has a horizontal shaft 82 fixed to a bracket 81 bolted to the unit link 75 of the chain 50, and a pair of movable plates 83. 83 is rotatably provided, and a pair of movable plates 83.
Rollers 84 and 85 are rotatably provided at both ends of the horizontal shaft 83, and a roller 86 is rotatably provided on the horizontal shaft 82.
A spring 88 is provided between a lever 87 fixed to the lever 87 and a pair of movable plates 83 to bias the movable plate 83 clockwise, and the roller 86 is guided by the guide surface 71a of the first guide rail 71. Then, the other roller 85 is guided by the guide surface 72a of the second guide rail 72, and the movable plate 83 resists the spring 88 so that the one roller 84 is slightly lower than the first guide rail 71, as shown in FIG. held in a prominent position.

As shown in FIG. 17, the drive mechanism B is approximately the same as the brake mechanism A.
, the absence of the generator 70 and the second guide rail 7
The second inclined guide surface 72'a is provided on the entry side of the unit truck 3, and the third and fourth idlers 403.40
．． The only difference is that the sprocket 41 is mounted upside down and the chain 50' rolls in the opposite direction, so the same members will be given the same reference numerals and a 1' yo will be added to omit the explanation.

The sprocket shaft 59' of the driving mechanism B and the sprocket shaft 59 of the braking mechanism A are connected via a coupling 100 as shown in FIG.

Thus, the downward track 2a and the track 35 of the brake mechanism A are continuous, and the load unit truck 3 travels from the downward track 2a onto the track 35 of the brake mechanism A.

Then, when the load unit truck 3 reaches the braking mechanism A, the first pin 901 contacts one roller 84 of the claw member 80 and rolls the chain 50.

As a result, the sprocket 41 is rotated, and the rotation is transmitted to the sprocket shaft 59' of the drive mechanism B via the shaft 59 and the coupling 100, so that the chain 50' is rolled and the pawl member 80' and pin 90 are rotated. upstream 2 via
Push up the unit truck 3 of b.

Therefore, part of the downward energy (velocity) of the loading unit truck 3 on the downward side 2a is transmitted as a force to push up the empty loading unit truck 3 on the upward side 2b, which relieves the tension acting on the coupler 4. to prevent damage.

Also, 1st. Second. 3rd pin 9G, 90°.

The pitch of 903 and the pitch of each claw member 80 are as shown in FIG.゜、9
03 do not come into contact with each other, and the second pin 90□ and the claw member 8
0 (S□ is j of the coupler gutter l) is narrower than the gap S2 (S2 is 1 of the coupler gutter) between the third pin 903 and the intermediate column 80.

For this reason, the play of the coupler 4 is closed.

Then, as shown in FIG. 19, the claw member 80 touches the guide surface 72.
When reaching the end of a, the first pin 90 of the following unit truck 3
1 comes into contact with the claw member 80.

The play of the coupler 4 is closed.

When the claw member 80 reaches the inclined guide surface 72'a as shown in FIG.
2, the roller 84 rotates clockwise around the first roller 84.
Since it moves together with the pin 90□, the preceding unit truck 3
The second pin 90° comes into contact with the claw member 80 when the second pin 90 degrees separates from the following unit truck 3 by the gap S1.

Therefore, the coupler 4 has a play Lz (that is, a gap S,
) only open.

Then, as shown in FIG. 19d, the claw member 80 in contact with the second pin 90° reaches the inclined guide surface 72'a.Similarly to the above, the leading unit truck 3 and the following unit truck 3 are separated. , and the difference between the gap S2 and the gap S2 (S2
When the third pin 903 is separated by S1), the third pin 903 comes into contact with the claw member 80.

Therefore, the play of the coupler is -52 (that is, the gap S2)
Only open.

When the claw member 80 that contacts the third pin 903 reaches the inclined guide surface 72'a as shown in FIG. The third pin 9 passes through the inclined guide surface 72'a.
03 and the claw member 80 are separated, the play in the coupler 4 is completely opened.

That is, while the load unit truck 3 engages with the chain 50 and rolls on the chain 50, it moves by only 3 with respect to the chain 50 due to the running force.

In this way, the play in the coupler 4 opens sequentially as o, -gl, -51, l when passing through the braking mechanism A.
Since there is no sudden change from the closed state to the open state, no large impact force is applied to the coupler 4 and the coupler 4 is not damaged.

In addition, in the drive mechanism B, the chain 50' is reversed,
Since the pawl member 80' moves from the inclined guide surface 72'a to the horizontal guide surface 72a, when the pawl member 80 comes into contact with the first bin 901, contrary to the above, it pushes up the leading carriage 3 and eliminates the play in the coupler 4. Close Sl, then attach the claw member 8 to the second pin 90°.
The third pin 903 contacts the claw member 80 and pushes up to fully open the play in the coupler 4.

In other words, while the empty cargo unit truck 3 and the chain 50' are in contact with each other and are pushed up, the empty cargo unit truck 3 moves back by 31 points with respect to the chain 50'. , -5/, and J to prevent large impact forces from acting on them.

Furthermore, since the braking mechanism A is provided with a generator 70 connected to the sprocket 41, it is possible to generate electricity using downward energy.

In addition, when the endless trolley 5 is to be locked, the braking mechanism A
and a disc brake 63.63' provided in drive mechanism B.
The sprocket shafts 59, 59' may be stopped by braking.

The present invention is as described above, and a portion of the downward energy of the loading unit truck 3 traveling on the downward track 2a is used to move the upward track 2b.
Since it is possible to push up the empty cargo unit truck 3 traveling on the
damage can be prevented.

[Brief explanation of drawings]

Fig. 1 is a schematic perspective view of the previously proposed device, Fig. 2 is a front view of its unit truck, Fig. 3 and subsequent figures show embodiments of the present invention, and Fig. 3 is an overall perspective view; 4 is a front view of the unit truck, FIG. 5 is a schematic plan view, FIG. 6 is a side view showing the connected state of the unit truck, FIGS. 7 to 16 are explanatory diagrams of the braking mechanism, and FIG. is a front view, Figure 8 is a plan view, Figure 9 is a side view, Figures 10, 11, 12, 13, and 14 are lines AA in Figure 8 and Figure 7. BB line, C-
15 is a front view of the claw member, FIG. 16 is a sectional view taken along line F-F, and FIG.
The figure is a central vertical cross-sectional view of the drive mechanism, Figure 18 is a side view of the braking mechanism and drive mechanism connected, and Figures 19a and 19b.
et dt e is an operation explanatory diagram. 2 is an endless trajectory, 2a is a downward trajectory, 2b is an upward trajectory, 3
5 is a unit truck, 5 is a coupler, 5 is an endless truck, A is a braking mechanism, and B is a drive mechanism.

Claims (1)

[Scope of utility model registration request] In a gravity transport device in which an endless truck 5 formed by connecting a unit truck 3 in an endless manner with a coupler 4 is installed on an endless track 2 installed at an inclination, the endless truck 5 is freely movable. The track 2a is provided with a rotating body that is rotated by the unit truck 3, and the up track 2b is provided with a rotating body that pushes up and moves the unit truck 3, and the rotating body and the rotating body are connected. Strain relief device for gravity transport equipment.