CN115744372A - Material taking device and ship unloader - Google Patents

Abstract

The invention relates to the technical field of ship unloading machinery, in particular to a reclaiming device and a ship unloader. The material retrieving device includes: a chain bucket arm; a hopper chain, which is formed by connecting a plurality of hoppers end to end in sequence, and the hopper chain is arranged around the outer peripheral side of the chain bucket arm; a driving unit, which is suitable for driving the hopper chain to run relative to the chain bucket arm; The rotary shaft is hingedly connected with the chain bucket arm, and the chain bucket arm is suitable for swinging around the rotary shaft; the force direction of the hopper chain when digging materials is parallel to the rotation plane of the chain bucket arm. The material retrieving device provided by the present invention, by setting the rotary shaft, the chain bucket arm is suitable for swinging around the rotary shaft; and the force direction of the hopper chain when digging materials is parallel to the rotary plane of the chain bucket arm, thereby ensuring the The main load on the feeding device is within the plane of the reclaiming device, the force is more reasonable, the operation reliability is improved, and the failure of the chain bucket arm is avoided due to excessive force, which is beneficial to the extension of equipment life and the improvement of efficiency.

Description

A reclaiming device and a ship unloader

technical field

The invention relates to the technical field of ship unloading machinery, in particular to a reclaiming device and a ship unloader.

Background technique

The ship unloader is the executive equipment used for bulk bulk material loading and unloading. At present, the traditional ship unloader is mostly bridge-type grab ship unloader. Due to the environmental problems such as material leakage and dust emission during its use, the stand-alone ship unloader The efficiency is not high and the energy utilization efficiency is low, and there are many limitations.

As shown in Figure 1, although the L-type chain bucket ship unloader in the prior art solves the environmental protection problems such as material leakage, the feeding head of the L-type chain bucket adopts a horizontal rotary feeding method, which is easy to make the chain bucket The lower end of the vertical arm bears a large horizontal force, which is prone to excessive torsion of the reclaimer arm, resulting in failure of the reclaimer arm slewing mechanism and the boom slewing mechanism. In the feeding method of rotary stacking extrusion, the feeding width is determined by the three parameters of chain bucket pitch, chain speed and chain bucket movement speed, but these parameters also restrict each other. If the speed is too fast, the feeding width will be affected. If the speed is too slow, it will affect the overall lifting efficiency, so the way of rotary reclaiming limits the further improvement of efficiency.

Therefore, it is an urgent problem to ensure the rationality of the force of the ship unloader and improve the efficiency of ship unloading.

Contents of the invention

Therefore, the technical problem to be solved by the present invention is to overcome the disadvantages of unreasonable force, easily damaged and low unloading efficiency in the prior art, so as to provide a reclaiming device with reasonable force and high efficiency.

Another technical problem to be solved by the present invention is to overcome the disadvantages of unreasonable stress, easy damage and low ship unloading efficiency in the prior art, so as to provide a ship unloader with uniform force and high efficiency.

In order to solve the above-mentioned technical problems, a kind of reclaiming device provided by the present invention comprises:

chain arm;

The hopper chain is composed of a plurality of hoppers connected end to end in sequence, and the hopper chain is arranged around the outer peripheral side of the chain bucket arm;

a drive unit adapted to drive the hopper chain to run relative to the chain bucket arm;

A rotary shaft is hingedly connected to the chain bucket arm, and the chain bucket arm is suitable for swinging around the rotary shaft;

The force direction of the hopper chain when digging materials is parallel to the rotation plane of the chain bucket arm.

Optionally, the rotary shaft is hinged to the upper part of the chain bucket arm;

A vertical line passing through the center of gravity of the reclaiming device is spaced apart from the axis of the rotary shaft.

Optionally, the drive unit includes:

motor;

A drive sprocket, the outer peripheral side of the drive sprocket is attached to the hopper chain, and the drive motor is suitable to drive the hopper chain to run through the drive sprocket.

Optionally, the rotation axis of the drive sprocket coincides with the axis of the rotary shaft.

Optionally, the reclaiming device further includes: two tensioning sprockets, arranged at one end away from the driving sprocket along the length direction of the chain bucket arm;

The two tensioning sprockets are suitable for extending the hopper chain, and make at least a partial area of the hopper chain form a pick-up section suitable for contacting with materials.

Optionally, a lifting section suitable for lifting materials is formed between the end of the picking section and the drive sprocket.

Optionally, after the hopper chain bypasses the drive sprocket from the end of the lifting section, it changes the direction of the opening of the hopper and completes the discharge;

A first redirecting sprocket is arranged between the driving sprocket and the head end of the reclaiming section; the hopper chain forms a first descending sprocket between the driving sprocket and the first redirecting sprocket. section, and a second descending section is formed between the first redirecting sprocket and the head end of the reclaiming section;

The second descending section is arranged at an angle to the first descending section.

Optionally, a second redirecting sprocket is arranged between the driving sprocket and the first redirecting sprocket, and the hopper chain is between the driving sprocket and the second redirecting sprocket Form the unloading section.

Optionally, the retrieving device further includes: a tensioning push rod is arranged between the two tensioning sprockets, and is suitable for keeping the two tensioning sprockets in a state of relative distance to tension the hopper chain.

Ship unloader provided by the present invention comprises:

Main beam;

The running trolley is arranged on the main beam and is suitable for moving along the length direction of the main beam;

As for the reclaiming device as described above, the reclaiming device is installed on the running trolley, and the running direction of the running trolley is parallel to the rotation plane of the chain bucket arm.

The technical solution of the present invention has the following advantages:

1. In the reclaiming device provided by the present invention, by setting the rotary shaft, the chain bucket arm is suitable for swinging around the rotary shaft; The slewing planes are parallel, so as to ensure that the main load on the reclaimer is within the plane where the reclaimer is located, the force is more reasonable, the operation reliability is improved, and the failure of the chain bucket arm is avoided due to excessive force, which is beneficial to the life of the equipment. Extended and improved efficiency.

2. The reclaiming device provided by the present invention is arranged at intervals between the vertical line passing through the center of gravity of the reclaiming device and the axis center of the rotary shaft, so that the reclaiming device always has a tendency to move towards the front end of the reclaiming device And moment, so as to increase the pressure of the reclaiming device on the material. The reclaiming device can use the moment generated by its own gravity to always maintain the movement trend towards the head of the hopper, which is convenient for retrieving materials and reduces energy consumption.

Description of drawings

In order to more clearly illustrate the specific implementation of the present invention or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings that need to be used in the specific implementation or description of the prior art. Obviously, the accompanying drawings in the following description The drawings show some implementations of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative work.

Fig. 1 is the schematic diagram of L type chain bucket ship unloader in the prior art;

Fig. 2 is the use state schematic diagram of ship unloader of the present invention;

Fig. 3 is the schematic diagram of the reclaiming device of the present invention;

Fig. 4 is a partial enlarged view 1 in Fig. 3;

Fig. 5 is a partial enlarged view 2 in Fig. 3;

Fig. 6 is a partial schematic view of the hopper chain of the present invention;

Fig. 7 is a schematic diagram of the hopper of the present invention.

Explanation of reference signs:

12. Main beam; 13. Running trolley; 20. Cabin; 30. Materials; 40. Wharf foundation;

100, material reclaiming device; 101, drive motor; 102, drive sprocket wheel; 103, rotary shaft; 104, chain bucket arm; 1051, first reversing sprocket wheel; 1052, second reversing sprocket wheel; 106, tension Push rod; 107, cover; 108, tensioning sprocket; 110, hopper chain; 111, hopper; 112, connecting plate; 113, hopper back plate; 114, ear plate;

120, lifting section; 130, first descending section; 140, second descending section; 150, feeding section; 160, unloading section.

Detailed ways

The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In describing the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. indicate The orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation or be configured in a specific orientation. and operation, and therefore should not be construed as limiting the invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as there is no conflict with each other.

Embodiment one

As shown in Fig. 2-Fig. 7, the reclaiming device provided by this embodiment includes:

chain bucket arm 104;

The hopper chain 110 is formed by connecting a plurality of hoppers 111 end to end in sequence, and the hopper chain 110 is arranged around the outer peripheral side of the chain bucket arm 104;

a drive unit, adapted to drive the hopper chain 110 to run relative to the chain bucket arm 104;

The rotary shaft 103 is hingedly connected with the chain bucket arm 104, and the chain bucket arm 104 is suitable for swinging around the rotary shaft 103;

The force direction of the hopper chain 110 when excavating the material 30 is parallel to the rotation plane of the chain bucket arm 104 .

Preferably, the chain bucket arm 104 is used as the main structure of the reclaiming device to support other structural components. In this embodiment, the chain bucket arm 104 may be a metal frame extending along the length direction.

Preferably, as shown in FIG. 3 , the force direction of the hopper chain 110 when excavating the material 30 is the extension direction of the material picking section 150 .

The hopper chain 110 is formed by connecting a plurality of hoppers 111 end-to-end in sequence. The hopper chain 110 is ring-shaped, and is adapted to run relative to the chain bucket arm 104 driven by a driving unit. The hopper chain 110 is provided with a plurality of hoppers 111, so that during the reciprocating movement, the hoppers 111 are used to dig materials, and after the materials are lifted to a certain height, the materials 30 are dumped, and then continue to dig materials, so back and forth. In this embodiment, the material 30 may be coal, corn, wheat and other grains, or other materials that can be accommodated in the hopper 111 .

Preferably, the material reclaiming device of this embodiment is preferably applied in a ship unloader, the ship unloader extends out of the main beam 12 , and the chain bucket arm 104 is installed on the main beam 12 . And specifically, the chain bucket arm 104 is hingedly connected to the main beam 12 through a rotary shaft 103 , so that the chain bucket arm 104 can swing around the rotary shaft 103 relative to the main beam 12 . And further, the force direction of the hopper chain 110 when excavating the material 30 is parallel to the rotation plane of the chain bucket arm 104, so that the chain bucket arm 104 itself will not bear the load when the reclaiming device is working. When the torsional force of the hopper chain 110 is too large when digging the material 30, the chain bucket arm 104 will swing freely around the rotary shaft 103 under the action of the force, and the main load on the reclaiming device is in the process of taking within the plane where the feeding device is located, avoiding failure of the chain bucket arm 104 due to excessive force, which is beneficial to prolonging the service life of the equipment and improving the efficiency.

The material retrieving device provided in this embodiment, by setting the rotary shaft 103, makes the chain bucket arm 104 suitable for swinging around the rotary shaft 103; The rotation planes of the chain bucket arm 104 are parallel to each other, so as to ensure that the main load on the reclaiming device is within the plane of the reclaiming device, the force is more reasonable, the operation reliability is improved, and the failure of the chain bucket arm 104 is avoided due to excessive force , which is conducive to the extension of equipment life and the improvement of efficiency.

Further, the opening direction of the hopper 111 is parallel to the rotation plane of the hopper chain 110, and the opening direction of the hopper 111 is parallel to the rotation plane of the chain bucket arm 104, further, the opening direction of the hopper 111 is parallel to the The feeding device is parallel to the translational direction of the main beam 12, that is, adopts the front feeding method, so that the hopper 111 can more directly shovel the material into the hopper when digging the material, and the working efficiency is greatly improved. Adopting the way of feeding from the front can also prevent the material pile from being squeezed on the head of the reclaiming head, and avoid large lateral excavation resistance.

Specifically, the rotary shaft 103 is hinged to the upper part of the chain bucket arm 104;

A vertical line passing through the center of gravity of the reclaiming device is spaced apart from the axis of the rotary shaft 103 .

It should be noted that the vertical line passing through the center of gravity of the reclaiming device is spaced apart from the axis of the rotary shaft 103, which means that the vertical line passing through the center of gravity of the reclaiming device does not pass through the rotating shaft The axis of 103, that is, the axis of the rotary shaft 103 in the vertical direction is not on the same straight line as the center of gravity of the reclaiming device. In order to maintain this state, this embodiment is flexibly connected with the traction hinge point of the material reclaiming device 100 by setting a rocking mechanism; maintain at the first preset position; at the first preset position, the vertical line passing through the center of gravity of the reclaiming device 100 is spaced apart from the axis center of the rotary shaft 103, and the reclaiming device is in the The moment under the action of gravity causes the reclaiming device to have a tendency to move towards the landside.

The material retrieving device provided in this embodiment, by making the vertical line passing through the center of gravity of the material reclaiming device and the shaft center of the said rotary shaft 103, be arranged at intervals, so that the material reclaiming device always has a tendency to move towards the front end of the material reclaiming And moment, so as to increase the pressure of the reclaiming device on the material. The reclaiming device can use the moment generated by its own gravity to always maintain the movement trend towards the head of the hopper, which is convenient for retrieving materials and reduces energy consumption.

As shown in Figure 2 and Figure 3, the reclaimer is roughly constructed in a herringbone shape. In the initial position, the center of gravity and the hinge point of the reclaimer are not on a straight line, and there is a moment; during excavation, the reclaimer can use The moment generated by its own gravity always maintains a movement trend towards the head of the hopper. If it encounters resistance, such as hardened materials, the hopper can always hold the head against the hardened material by its own gravity, improving the breaking force of the hardened material. , wait for the hopper to dig out the material in front before continuing to move forward, thereby improving the efficiency of retrieving materials, reducing the extra force, and even without the need for extra force, the reclaiming device can use its own gravity to complete reclaiming, reducing energy consumption.

Specifically, the drive unit includes:

drive motor 101;

The driving sprocket 102 , the outer peripheral side of the driving sprocket 102 is attached to the hopper chain 110 , and the driving motor 101 is adapted to drive the hopper chain 110 to run through the driving sprocket 102 .

Preferably, the output shaft at the end of the drive motor 101 is decelerated and connected to the drive sprocket 102, and the drive sprocket 102 is located on the upper part of the reclaiming device.

Specifically, the rotation axis of the drive sprocket 102 coincides with the axis of the rotary shaft 103 .

Specifically, the retrieving device further includes: two tensioning sprockets 108, arranged at one end away from the drive sprocket 102 along the length direction of the chain bucket arm 104;

The two tensioning sprockets 108 are suitable for extending the hopper chain 110 , and make at least a partial area of the hopper chain 110 form a pick-up section 150 suitable for contacting the material 30 .

As shown in FIG. 3 , the two tensioning sprockets 108 are located at the bottom of the reclaimer, and the two tensioning sprockets 108 can extend the lower part of the hopper chain 110 so that multiple hoppers are running When it reaches here, it can be in the state of opening forward, so as to facilitate multiple hoppers to take materials at the same time and improve the efficiency of taking materials.

Specifically, the retrieving device further includes: a tensioning push rod 106 is arranged between the two tensioning sprockets 108, and is suitable for keeping the two tensioning sprockets 108 in a relatively far apart state so as to tension the two tensioning sprockets 108. The hopper chain 110 described above. Thereby, the tension of the hopper chain 110 is ensured, and the length of the retrieving section 150 is maintained.

Specifically, a lifting section 120 suitable for lifting the material 30 is formed between the end of the picking section 150 and the drive sprocket 102 .

It should be noted that the end of the material fetching section 150 refers to the end of the hopper chain 110 in a state of contact with the material 30 along the rotation direction of the hopper chain 110 . Correspondingly, the head end of the material fetching section 150 refers to the head end of the hopper chain 110 in a state of contact with the material 30 along the rotation direction of the hopper chain 110 .

Preferably, the lifting section 120 in this embodiment is a straight section. By setting the material lifting section 120 as a straight line section, the hopper is always kept on a straight line to ensure the stability of the material lifting process.

Specifically, after the hopper chain 110 bypasses the drive sprocket 102 from the end of the lifting section 120, it changes the orientation of the opening of the hopper 111 and completes the discharge;

A first reversing sprocket 1051 is arranged between the driving sprocket 102 and the head end of the retrieving section 150; A first descending section 130 is formed between them, and a second descending section 140 is formed between the first redirecting sprocket 1051 and the head end of the retrieving section 150;

The second descending section 140 is set at an angle to the first descending section 130 .

Preferably, a first redirecting sprocket 1051 is provided between the drive sprocket 102 and the head end of the retrieving section 150, so that the hopper chain 110 forms the first descending section 130 and the second descending section 140, and the The second descending section 140 is set at an angle to the first descending section 130, so that the overall structure of the hopper chain 110 is roughly herringbone, that is, on the upper part of the reclaiming device, the distance between the hopper lifted by the load and the hopper dropped by the empty load is relatively small. close, so that the upper structure of the reclaiming device is smaller, and at the lower part of the reclaiming device, after being redirected by the first redirecting sprocket 1051, the lifting hopper and the descending hopper will be far away from each other, and the descending hopper is bent at an angle, so that the retrieving The lower part of the material device forms a shape similar to a triangle, which is convenient for setting the material picking section 150 .

Preferably, by adopting a herringbone-shaped reclaiming device, the method of front-side feeding of the hopper edge line with a higher force-efficiency ratio is adopted. At the bottom of the herringbone structure, in order to allow the reclaiming arm to dig out the hatch coaming For the material below the board, the bottom of the retrieving device is provided with a retrieving section 150 of sufficient length, so that the hopper can dig the material at a high speed in the direction of the ship's width, and the efficiency is greatly improved.

The traditional L-shaped reclaiming head realizes the material entering the hopper by sweeping left and right, but the deep and narrow reclaiming device is not easy to unload when unloading, and this rotary feeding method must use L-shaped The reclaiming device is equipped with a deep and narrow hopper to realize rotary pile extrusion feeding. The reclaiming device provided in this embodiment adopts a herringbone-shaped front retrieving head. Compared with the traditional chain bucket ship unloader, the structure is simpler, and at the same time, the force on the bottom of the entire reclaiming device is more uniform, and the cost is also lower.

Specifically, a second redirection sprocket 1052 is provided between the drive sprocket 102 and the first redirection sprocket 1051, and the hopper chain 110 is connected between the drive sprocket 102 and the second redirection sprocket. A discharge section 160 is formed between the sprockets 1052 .

Preferably, a collecting device such as a funnel may be provided at a position relatively lower than the discharge section 160 to facilitate the subsequent transfer of materials. The arrangement of the unloading section 160 can reduce the interference of the empty hopper moving downwards on the fully loaded hopper that needs to be unloaded, so as to ensure efficient unloading.

Preferably, a dustproof case 107 is provided outside the hopper chain 110 to prevent dust. The hopper is only exposed at the lower part of the reclaimer.

Due to the rotary feeding method used by the traditional chain bucket ship unloader, the chain bucket needs to use a deep and narrow hopper to facilitate digging, and the deep and narrow chain bucket is not easy to unload when unloading. And because the hopper of this embodiment adopts the mode of feeding from the front, the hopper can be set as a wide and shallow hopper, which is convenient for materials to enter and pour out.

As shown in Fig. 6 and Fig. 7, the hopper chain 110 is formed by alternately connecting the hopper 111 and the connecting plate 112, the two ends of the hopper 111 are provided with ear plates 114, the ear plates 114 are provided with shaft holes, and the connecting plates 112 are provided with A shaft hole is also provided, and the ear plate 114 is hinged with the connecting plate 112 through a pin shaft, thereby connecting all the hoppers together to form a hopper chain.

The reclaiming device of the traditional chain bucket ship unloader adopts a chain drive, the reclaiming chain bucket is installed between two chains, and the driving device drives the chain to drive the chain bucket to move. This transmission mode has high requirements on the performance of the chain, and the chain is easily damaged and needs to be replaced regularly, resulting in high maintenance costs.

Preferably, in the reclaiming device provided in this embodiment, the hopper back plate 113 of the hopper 111 can directly participate in the transmission, cancel the traditional chain drive, use the connecting plate and the hopper back plate to drive, and use the connecting plate to connect each hopper. Make the hopper part of the transmission. The hopper is not only the working mechanism when digging materials, but also participates in the transmission as a part of the hopper chain, which increases the stress area and improves the reliability.

Preferably, the driving sprocket and the reversing sprocket act on the connecting plate, the connecting plate is connected with the pin on the back plate, and the connecting plate is outside the hopper, so that it will not interfere with the hopper during driving and reversing. The connecting plate is made of high-strength material to ensure the reliability of driving and turning.

Embodiment two

As shown in Figure 2, this embodiment provides a ship unloader, including:

main beam 12;

The running trolley 13 is arranged on the main beam 12 and is suitable for moving along the length direction of the main beam 12;

As for the reclaiming device 100 described above, the reclaiming device 100 is installed on the running trolley 13 , and the running direction of the running trolley 13 is parallel to the rotation plane of the chain bucket arm 104 .

Preferably, the ship unloader is arranged on the wharf foundation 40 and extends to the sea side through the main girder 12 . Preferably, the material retrieving device 100 is suitable for extending into the cabin 20 to facilitate digging of the material 30 .

Preferably, one movement of the reclaiming device only takes materials from the front in the direction of the ship's width, and the main loads on the reclaiming device are all within the plane where the reclaiming device is located, which is beneficial to prolonging the life of the equipment and improving the efficiency.

The specific working process of the ship unloader provided by the present embodiment is described in detail below:

When working, the drive motor drives the drive sprocket to rotate, and the drive sprocket drives the connecting plate to move, thereby driving the entire hopper chain 110 to rotate. The hopper moves downward from the driving sprocket to the head of the reclaiming section, and starts to feed material from the front of the hopper edge line, and the hopper continues to move from the head of the reclaiming section to the end of the reclaiming section. When the device follows the running trolley 13 and moves from the sea side to the land side, the reclaiming device digs down at the head end of the reclaiming section to pick up materials; when the reclaiming device moves from the land side to the sea side, the reclaiming device The end of the pick-up section scoops up the material. After the hopper moves to the end of the retrieving section, it is lifted upwards, and after passing through the lifting section 120, the hopper is finally turned over at the drive sprocket, and the material is poured out to complete a working cycle.

Apparently, the above-mentioned embodiments are only examples for clear description, rather than limiting the implementation. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. And the obvious changes or changes derived therefrom are still within the scope of protection of the present invention.

Claims (10)

1. A material extracting apparatus, comprising:

a chain bucket arm (104);

the hopper chain (110) is formed by sequentially connecting a plurality of hoppers (111) end to end, and the hopper chain (110) is arranged around the outer periphery of the hopper arm (104);

a drive unit adapted to drive the hopper chain (110) in operation relative to the hopper arm (104);

a revolving shaft (103) which is hinged with the chain bucket arm (104), wherein the chain bucket arm (104) is suitable for swinging around the revolving shaft (103);

the direction of the force exerted by the bucket chain (110) during the removal of material (30) is parallel to the plane of rotation of the bucket arm (104).

2. The reclaiming apparatus as claimed in claim 1 wherein the pivot shaft (103) is hingedly connected to an upper portion of the hopper arm (104);

the vertical line passing through the gravity center of the material taking device is arranged at intervals with the axis of the rotating shaft (103).

3. The reclaimer assembly of claim 1, wherein the drive unit comprises:

a drive motor (101);

the outer peripheral side of the driving chain wheel (102) is attached to the hopper chain (110), and the driving motor (101) is suitable for driving the hopper chain (110) to run through the driving chain wheel (102).

4. A reclaiming device according to claim 3, characterized in that the axis of rotation of the drive sprocket (102) coincides with the axis of the turning shaft (103).

5. The extracting apparatus as set forth in claim 3, wherein the extracting apparatus further includes: two tension sprockets (108) disposed at one end of the chain bucket arm (104) away from the drive sprocket (102) in a length direction thereof;

the two tensioning sprockets (108) are adapted to stretch the hopper chain (110) and form at least a portion of the hopper chain (110) into a take-off section (150) adapted to contact material (30).

6. The reclaiming apparatus as claimed in claim 5 wherein a lifter section (120) adapted to lift the material (30) is formed between the end of the material take-off section (150) and the drive sprocket (102).

7. The reclaiming apparatus as claimed in claim 6 wherein the hopper chain (110) changes the orientation of the opening of the hopper (111) and completes the discharge after passing around the drive sprocket (102) from the end of the raising section (120);

a first direction-changing chain wheel (1051) is arranged between the driving chain wheel (102) and the head end of the material taking section (150); the hopper chain (110) forming a first drop section (130) between the drive sprocket (102) and the first diverting sprocket (1051), and a second drop section (140) between the first diverting sprocket (1051) and a head end of the take-out section (150);

the second drop section (140) is disposed at an angle to the first drop section (130).

8. The reclaiming apparatus according to claim 7 wherein a second redirection sprocket (1052) is disposed between the drive sprocket (102) and the first redirection sprocket (1051), the hopper chain (110) forming a discharge section (160) between the drive sprocket (102) and the second redirection sprocket (1052).

9. The extracting apparatus as set forth in claim 5, wherein the extracting apparatus further includes: a tension push rod (106) is disposed between the two tension sprockets (108) adapted to maintain the two tension sprockets (108) in a relatively distant state to tension the hopper chain (110).

10. A ship unloader, comprising:

a main beam (12);

the running trolley (13) is arranged on the main beam (12) and is suitable for moving along the length direction of the main beam (12);

and a reclaimer device according to any one of claims 1 to 9, said reclaimer device being mounted on said travelling carriage (13) and the direction of travel of said travelling carriage (13) being parallel to the plane of rotation of said hopper arm (104).

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