JPS6027168Y2 - 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 that the slope a
On an endless track installed along an endless track, an endless bogie e consisting of unit bogies C connected in an endless manner with a coupler d is provided so as to be freely movable.
Earth and sand is loaded onto the unit truck C from the higher side of the endless track, lowered by gravity, discharged at the lower side, and the lowering energy of the loading unit truck C is lowered from the higher side. We proposed a system that would allow the vehicle to run toward higher ground.

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 the earth and sand can be dropped and loaded onto the unit truck 3, thereby forming an earth and sand loading mechanism 8. are doing.

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 wheels 10 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, so that when the auxiliary wheels 14 ride on the guide rail 9, the vessel 12 is tilted and the door 15 is opened.

The earth and sand in the vessel 12 is then discharged and loaded onto the barge 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 loading unit truck 3 traveling on the uphill track 2b is braked, and the braking force is transmitted to the empty loading unit truck 3 on the upward track 2b via the connecting shaft C.

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. When a braking force is applied by mechanism A, the unit truck 3, which is running at a higher place than the braking mechanism A (Fig. 5 A), is lowered by gravity, so the play in the coupler 4 is closed and its length becomes l□, and the braking Since the unit truck 3 running at a location lower than the mechanism A (the exit in Figure 5) is similarly lowered by gravity, the play in the coupler 4 is opened and its length l becomes 12.

However, when 2>11, 12-1□ becomes equal to the coupler backlash l.

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 diagrams of the braking mechanism A, in which the frame 30 is attached to the slope 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 columns 33 at the ends of each lower frame member 3.
are respectively erected, and a pair of left and right upper cross members 34 are connected horizontally across the support 33, and a pair of left and right tracks 35, 35 are attached to the left and right upper frame members 34, and a presser piece 36 and a port 37 are connected to each other. The fastening is fixed, and the track 35 connects to the discontinuous portion of the downward track 2a to connect the downward track 2a.

On both sides of the frame 30 in the longitudinal direction, first. 2nd idler 4
01.40° is rotatably supported, and a third.
Fourth idler 403.40. is rotatably supported, and the third. A sprocket 41 is rotatably supported between the fourth idlers 403 and 404, and a chain 50 is wound around the idler 40 and the sprocket 41.

That is, as shown in FIG. 11, the first idler 40□ 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 attached via a bearing 49 to a shaft 48 that is inserted into the elongated holes 74 of a pair of left and right brackets 46, 46 so as to be slidable in the longitudinal direction. , 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.

Also, 3rd. As shown in FIG. 13, the fourth idlers 403 and 404 are shafts that are rotatably supported via bearings 54 and 54 on a pair of intermediate frame members 53 and 53 that are horizontally suspended between a pair of left and right intermediate columns 52 and 52, respectively. 55 with a key 56,
Said 1st. It has a smaller diameter than the second idler 401, 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 mounted on a shaft 59 supported between bearings 58 and 5B 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 rails 71 are connected to each of the brackets 42.
．． 46, and has a downward guide surface 71a, and the second guide rail 72 is bolted to a horizontal frame 73 that extends horizontally between a pair of left and right upper frame members 34 and 34. , has an upward 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 75 are connected endlessly by a pin 76, and a roller 77 that meshes with the idler 40 and the teeth of the sprocket 4 is provided on the pin 76.

The chain 50 has claw members 80 arranged at a predetermined pitch P1=
P2=P3? A plurality of first .p and .p. Second. 3rd pin 901.9
It is designed to lock at 0° and 903.

As shown in FIGS. 1, 15, and 16, the claw member 80 has a horizontal shaft 82 fixed to a bracket 81 bolted to a unit link 75 of the chain 50, and a pair of movable plates 83. 83 is rotatably provided, and a pair of movable plates 83.8
3, and a roller 86 is rotatably provided on the horizontal shaft 82, and the spring 8 is connected between a lever 87 fixed to the horizontal shaft 82 and one movable plate 83.
2 is provided to urge the movable plate 83 to swing clockwise, and the roller 86 is attached to the guide surface 7 of the first guide rail 71.
1a, and the other roller 85 is guided by the guide surface of the second guide rail 72? 2a, the movable plate 83 is held in a position where one roller 84 slightly protrudes from the first guide rail 71, as shown in FIG. 7, against the force of the spring 88.

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
2 inclined guide surfaces 72'a are provided on the entry side of the unit platform 3, and the 3rd and 4th 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 description of the same parts will be omitted by giving them the same product number and adding VNJ.

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 bracket 35 of the brake mechanism A.

Then, when the load unit truck 3 reaches the braking mechanism A, the first pin 90□ comes into contact with one roller 84 of the claw member 80, causing the chain 50 to roll.

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 pushing up the empty loading unit truck 3 on the upward side 2b, and the tension acting on the coupler 4 is alleviated. to prevent damage.

Also, 1st. Second. Third pin 90. ．． 90°.

The pitch of 903 and the pitch of each claw member 80 are the 19th
When the first pin 901 comes into contact with one claw member 80 as shown in FIG.
03 do not come into contact with each other, and the second pin 90□ and the claw member 8
0 (Sl is A of the coupler play 1) is narrower than the gap S2 (S2 is 100 of the coupler play 1) between the third bottle 903 and the claw member 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.

Then, as shown in Figure 19C, the claw member 80 is attached to the inclined guide surface 7.
2'a, the movable plate 83 of the claw member 80 moves to the horizontal shaft 82.
Since the roller 84 is rotated clockwise around the center and moves together with the first pin 901, the preceding unit truck 3 and the following unit truck 3 are separated, and the gap S
When the second pin 90□ is separated by 1, the second pin 90□ comes into contact with the claw member 80.

For this reason, the coupler 4 has a clearance 5e (that is, a clearance s
Open only i).

Then, as shown in FIG. 19d, the claw member 80 in contact with the second pin 90° reaches the inclined cam 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 S1 (S2 S
1), the third pin 903 comes into contact with the claw member 80.

Therefore, the play of the coupler is -5g (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.
When 0° 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 a distance l relative to the chain 50 due to the running force.

In this way, the backlash l of the coupler 4 opens sequentially as o, 'e, ``e, e'' when passing through the braking mechanism A, and does not suddenly change from the closed state to the open state.
To prevent damage to the coupler 4 without applying a large impact force to the coupler 4.

In addition, in the drive mechanism B, the chain 50' is reversed,
Since the claw member 80' moves from the inclined guide surface 72'a to the horizontal guide surface 72a, when the claw member 80 comes into contact with the first pin 90, contrary to the above, it pushes up the preceding unit truck 3 and eliminates the play in the coupler 4. lz close, then attach the claw member 80 to the second pin 90°.
The third pin 903 contacts and pushes up to close the play 21 of the coupler 4, and further, the third pin 903 comes into contact with the claw member 80 and pushes up to fully open the play of 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 backward by l with respect to the chain 50'. -5, / close sequentially to prevent large impact force 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 stopping the endless trolley 5, 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.

Furthermore, while the loading unit truck 3 passes through the braking mechanism A, the play in the coupler 4 with the following loading unit truck 3 is sequentially released, and while the empty loading unit truck 3 passes through the drive mechanism B, the following Since the play between the coupler 4 and the empty cargo unit truck 3 is sequentially closed, no large impact force is applied to the coupler 4, and damage to the coupler 4 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, Fig. 8 is a plan view, Fig. 9 is a side view, Fig. 10, Fig. 11, Fig. 12, Fig. 13, Fig. 1.
Figure 4 shows lines A-A in Figure 8 and lines B-B and C-C in Figure 7.
15 is a front view of the claw member, FIG. 16 is a sectional view taken along line F-F, and FIG. 17 is a central longitudinal sectional view of the drive mechanism. Figure 18 is a side view of the braking mechanism and drive mechanism connected, Figure 19 a, b, c, d
, e are operation explanatory diagrams. 2 is an endless trajectory, 2a is a downward trajectory, 2b is an upward trajectory, 3
4 is a unit truck, 4 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. Braking mechanism A is installed on the track 3a, and drive mechanism B is installed on the upward track 2b.
In addition, the braking mechanism A is provided with a chain 50 on the frame 30 so as to be freely removable along the running direction of the unit truck, a sprocket 41 that meshes with the chain 50, and a plurality of pawl members 80 on the chain 50. The drive mechanism B is configured to be movable up and down at a predetermined pitch P.
A chain 50' is provided on the frame 30' so as to be movable along the running direction of the unit truck, and a sprocket 41' that meshes with the chain 50' is provided, and a plurality of pawl members 80' are movable up and down on the chain 50'. The sprocket 41' and the sprocket 4 are freely provided at a predetermined pitch.
1, and a plurality of contact pieces 90'□, 90°, 903 that abut the claw member 80 are provided on the unit truck 3 at a predetermined pitch different from the pitch of the claw member 80. The claw member 80 is brought into contact with the abutment piece from the unit car entry side position to the exit side approach position, and is sequentially moved so as to separate from the abutment piece while moving from the exit side approach position to the exit side position. The claw member 80' of the drive mechanism B is sequentially moved so as to come into contact with the contact piece while moving from the unit car entry side position to the approach side approach position, and thereafter, A strain relief device for a gravity transport device, characterized in that it is configured to take a posture.