Bucket wheel hopper automatic reversing device and reversing method thereof

Abstract

The present invention provides an automatic reversing device for a bucket wheel hopper. A stopper is provided on the hopper. The bucket wheel is driven to rotate the bucket wheel, thereby driving the hopper to rotate. At the same time, a telescopic mechanism fixed to the bucket wheel support frame extends to the stopper of the hopper. The stopper is turned to drive the hopper to rotate and change direction. At the same time, two sets of hopper lockers are provided for automatically locking the hopper after reversing. During operation, the telescopic mechanism first unlocks the locker, then turns the hopper to reverse direction. After the reversal is completed, another locker is turned to lock the hopper.

Description

Technical Field

[0001] The present invention relates to the technical field of bulk material handling and conveying, and in particular to a hopper capable of achieving automatic reversing. Background Art

[0002] The bridge-type bucket wheel blending reclaimer is a blending equipment used in steel mills, cement plants, and dock material yards to achieve blending operations for bulk materials such as ore. When the bucket wheel blending reclaimer runs to the end of the material yard, it is necessary to change the direction of the hopper and then take materials in the opposite direction. At this time, the direction of the hopper needs to be changed. On traditional bucket wheel blending reclaimers, this reversing operation is performed manually, which is time-consuming and labor-intensive, requiring two workers to work for half a day. This operation is a major obstacle to the intelligent control of the material yard, hindering the automation and intelligentization process of the bidirectional blending reclaimer, and is currently the key technical bottleneck for the unmanned operation of blending yards such as steel mills. Summary of the Invention

[0003] In response to the aforementioned technical problems, an automatic reversing device and method for a bucket wheel hopper are provided. The present invention primarily utilizes a stopper provided on the hopper, which is driven by the bucket wheel to rotate, thereby driving the hopper. Simultaneously, a telescopic mechanism fixed to the bucket wheel support extends to the hopper's stopper, shifting the stopper to drive the hopper's rotation and change direction.

[0004] The technical means adopted in the present invention are as follows:

[0005] A bucket wheel hopper automatic reversing device comprises a bucket wheel body, a retaining frame for supporting the bucket wheel body, and a plurality of hoppers hinged to the bucket wheel body via pins;

[0006] The automatic reversing device comprises: two fixed columns fixed to one side of the hopper, and a U-shaped stopper of the hopper fixed to the same side of the hopper 1 as the fixed columns;

[0007] The two fixing columns are respectively arranged on the left and right sides of the center line of the fixed side, and the center axes of the two fixing columns are at the same distance from the center axis of the pin;

[0008] The bucket wheel body is provided with a locker which cooperates with a fixed column close to the bucket wheel body to lock when the bucket is in the extreme position of flipping around the pin shaft;

[0009] A telescopic device is fixed on the above-mentioned retaining frame, and a shift rod is fixed to the telescopic end of the telescopic device. The end of the shift rod can be inserted into the hopper shift stop of the hopper to achieve stop. In the stop state, the bucket wheel body rotates to cause the hopper to flip.

[0010] Further,

[0011] The locker comprises a locker seat fixed on the bucket wheel body, a follower pinion and a tooth block assembled on the locker seat by rotating the shaft, and a spring ball device arranged inside the pinion and radially locking the pinion.

[0012] The central axis of the follower pinion shaft is parallel to the central axis of the pin shaft;

[0013] The above-mentioned follower pinion is provided with an axially extending arc-shaped groove facing the end of the hopper;

[0014] The above-mentioned fixing column is embedded in the arc-shaped groove to achieve locking and stopping;

[0015] The gear block is fixed to the telescopic end of the telescopic device and moves synchronously with the shifting rod;

[0016] When the gear block is extended and the lever of the telescopic device is in the stop position, the teeth of the gear block are on the path of the follower pinion rotating with the bucket wheel body. When the follower pinion passes the gear block, the teeth of the two mesh with each other, and then the bucket wheel body continues to rotate, causing the follower pinion to rotate under the action of the gear block. The full range of the follower pinion passing the teeth of the gear block can cause the follower pinion to rotate 180°.

[0017] It should be noted that the fixing column is clamped by the steel ball in the spring ball device before and after being locked, that is, before and after the follower pinion rotates 180°, so that the follower pinion cannot rotate when it is not in contact with the gear block, keeping the direction of the arc groove on the follower pinion unchanged.

[0018] Further,

[0019] Each hopper tipping limit position is equipped with a contact sensor, and the contact sensor is connected to the bucket wheel machine control terminal through an electrical signal;

[0020] A rotation angle sensor is provided on the rotating shaft of each follower pinion, and the angle sensor is connected to the bucket wheel excavator control terminal through an electrical signal.

[0021] Further,

[0022] The above-mentioned electrical signal transmission form is wired or wireless.

[0023] Further,

[0024] The above-mentioned follower pinion includes: a gear and a round tube;

[0025] The spring ball device comprises: a spring and a steel ball;

[0026] The spring ball device is embedded in the side wall of the circular tube of the follower pinion;

[0027] The lock seat is composed of a steel plate with a semicircular arc on the upper part and a round steel. The outer surface of the round steel has two arc-shaped grooves with a depth greater than or equal to 1 / 3R in the radial direction, which serve as slideways for the steel ball in the spring ball device to limit the movement of the steel ball along the axial direction of the lock seat. On the arc-shaped groove, two ball pits with a depth greater than or equal to 1 / 2R are punched at the 0° and 180° positions along the circumferential direction, where R is the radius of the steel ball of the spring ball device 13;

[0028] As the follower pinion rotates, the steel ball in the spring ball device sinks into the ball pit, so that the follower pinion will not rotate at will after the automatic locker is locked or unlocked.

[0029] A reversing method for a bucket wheel hopper automatic reversing device comprises the following steps:

[0030] Step 1: Confirm that all buckets are in the first position locking state, that is, the fixing column on that side is embedded in the arc-shaped groove of the locker on that side. This state is the initial state of the bucket wheel body;

[0031] Step 2: unlocking action, starting the driving device of the bucket wheel body;

[0032] Step three: determine whether the lever is between the two hoppers through the photoelectric signal sensor; when it is determined that the lever is between the two hoppers, control the telescopic device to drive the lever and the gear block to extend forward; as the bucket wheel body rotates, the gear block engages with the corresponding follower pinion on the locker, driving the follower pinion to rotate 180°, causing the arc-shaped groove to flip 180°, thereby releasing the locking stop state of the fixed column; at the same time, the lever cooperates with the hopper toggle U-shaped stop to realize the gradual rotation and tilting of the hopper around the pin shaft. During this process, the gear block engages with the follower pinion on the locker on the other side of the hopper, causing the arc-shaped groove of the follower pinion to flip 180° to the locking stop position;

[0033] Step 4: Confirm that all hoppers are in the second position locking state, all hoppers have completed 180° flipping, and the fixing column on this side is embedded in the arc groove of the corresponding lock on the corresponding side to lock the stop;

[0034] Step five: stop reversing, control the bucket wheel body to stop rotating, control the telescopic device to drive the lever 3 and the gear block to retract, and then start the equipment to carry out the material taking operation in the direction after reversing.

[0035] The present invention, employing the above-described technical solution, evenly distributes a number of hoppers along the circumference of the bucket wheel. Two fixing posts are positioned on one side of the hopper. The angular bisector of the line connecting the two fixing posts and the pin 6 is the centerline of the entire hopper, making the entire hopper symmetrical about this line. The bucket wheel and hopper are hingedly connected by a pin. The axes of the multiple pins lie on the same circumference, which is concentric with the axis of the bucket wheel. Two automatic locks are positioned on either side of each hopper, arranged on one side of the outer circumference of the bucket wheel 7, to unlock and lock the hopper.

[0036] The follower pinions and arcuate grooves on all automatic locks are located on the same circumference, and this circumference is concentric with the bucket wheel axis. The initial positions of the two sets of automatic locks are opposite. One lock is initially locked to one of the fixed posts on the hopper, that is, the arcuate groove on the automatic lock opens inward, pointing toward the bucket wheel axis; the initial position of the other automatic lock is that its arcuate groove opens outward, preparing to lock the other fixed post on the hopper after the hopper is completely turned over.

[0037] The telescopic device is fixed on the retaining frame of the bucket wheel body. The bucket wheel body and the retaining frame rotate relative to each other in the working state. When reversing is required, the rotation direction of the bucket wheel body 7 is opposite to the rotation direction during the previous operation, that is, the bucket wheel body is reversed, and the rotation speed is much lower than the operating speed. The photoelectric signal sensor is used to determine whether to trigger the telescopic device;

[0038] The telescopic device extends forward, driving the gear block to the designated position. The bucket wheel acts as a driving force, and the gear block shifts the follower pinion to unlock the hopper. The shift lever shifts the U-shaped stop to flip the hopper. After flipping into place, the gear block shifts the follower pinion on the other lock to lock the hopper. The bucket wheel then uses its own power to automatically flip the hopper.

[0039] Compared with the prior art, the present invention has the following advantages:

[0040] 1. The automatic reversing device and reversing method of the bucket wheel hopper provided by the present invention are characterized by providing a U-shaped stop on the hopper, utilizing the bucket wheel drive to rotate the bucket wheel, thereby driving the hopper to rotate, and at the same time, a telescopic mechanism fixed to the bucket wheel support frame extends to the stop of the hopper, and the stop is moved to drive the hopper to rotate and change direction; at the same time, two sets of hopper lockers are used for automatic unlocking and locking of the hopper reversal, thereby realizing the function of automatic reversal of the hopper and reverse reversal of the hopper after completing one-way retrieving in the material yard of the bridge-type bucket wheel mixing and reclaiming machine, and retrieving materials in the material yard.

[0041] 2. The present invention has a simple structure and low manufacturing cost.

[0042] 3. The end state of all hopper reversing operations on the bucket wheel body of the present invention is the initial state of the next reversing operation, and there is no need to manually reset the reversing device.

[0043] 4. The present invention realizes unmanned operation and unmanned control of the bucket wheel mixing reclaimer, reduces the labor cost of the reclaimer, and improves productivity.

[0044] Based on the above reasons, the present invention can be widely promoted in the fields of bridge-type bucket wheel mixing and reclaiming machines in strip material yards and bulk material handling and transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0046] Figure 1 Detailed description of the drawings showing embodiments of the present invention.

[0047] Figure 2 This is the state before the first fixing column is unlocked in the embodiment of the present invention.

[0048] Figure 3 This is the unlocking completion state of the first fixing column in the embodiment of the present invention.

[0049] Figure 4 In the embodiment of the present invention, the shifting rod starts to shift the U-shaped stopper, and the hopper will start to reverse.

[0050] Figure 5 , Figure 6 , Figure 7 This is the intermediate state of the hopper reversing in the embodiment of the present invention.

[0051] Figure 8 This is the state before the second fixing column is locked according to the embodiment of the present invention.

[0052] Figure 9 This is the second fixing column locking completion state of the embodiment of the present invention.

[0053] Figure 10 FIG1 is an automatic locking device according to an embodiment of the present invention

[0054] In the picture:

[0055] 1. Hopper;

[0056] 2. U-shaped stop;

[0057] 3. Push the lever;

[0058] 4. Telescopic device;

[0059] 5. Automatic locker;

[0060] 6. Pin;

[0061] 7. Bucket wheel body;

[0062] 8. Tooth block;

[0063] 9. Fixed column;

[0064] 11. Locking device seat;

[0065] 12. Follower pinion;

[0066] 13. Spring ball device;

[0067] 14. Cage;

[0068] 15. Arc-shaped groove. DETAILED DESCRIPTION

[0069] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0070] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0071] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0072] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​described in these embodiments do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to ordinary technicians in the relevant fields may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0073] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0074] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0075] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0076] like Figure 1As shown, the present invention provides a bucket wheel hopper automatic reversing device, comprising a bucket wheel body 7, a retaining frame 14 for supporting the bucket wheel body 7, and a plurality of hoppers 1 hinged to the bucket wheel body 7 through a pin shaft 6;

[0077] The automatic reversing device includes: two fixing columns 9 fixed to one side of the hopper 1, and a hopper U-shaped stopper 2 fixed to the same side of the hopper 1 and the fixing columns 9;

[0078] The two fixing columns 9 are respectively arranged on the left and right sides of the center line of the fixed side, and the center axes of the two fixing columns 9 are at the same distance from the center axis of the pin 6;

[0079] The bucket wheel body 7 is provided with a locker 5 which cooperates with a fixed column 9 close to the bucket wheel body 7 to lock when the bucket 1 is in the extreme position of flipping around the pin 6;

[0080] A telescopic device 4 is fixed on the retaining frame 14, and a shift rod 3 is fixed to the telescopic end of the telescopic device 4. The end of the shift rod 3 can be inserted into the hopper shift stop 2 of the hopper to achieve a stop. In the stopped state, the bucket wheel body 7 rotates to cause the hopper 1 to flip.

[0081] Further,

[0082] The locker 5 includes: a locker seat 11 fixed on the bucket wheel body 7, a follower pinion 12 and a gear block 8 assembled on the locker seat 11 by rotating the shaft, and a spring ball device 13 arranged inside the pinion 12 and radially locking the pinion 12.

[0083] The central axis of the rotating shaft of the follower pinion 12 is parallel to the central axis of the pin 6;

[0084] The follower pinion 12 is provided with an axially extending arc-shaped groove 15 at the end facing the hopper 1;

[0085] The fixing column 9 is embedded in the arc-shaped groove 15 to achieve locking and stopping;

[0086] The tooth block 8 is fixed to the telescopic end of the telescopic device 4 and moves synchronously with the shift rod 3;

[0087] When the gear block 8 is in the stop position when the telescopic device 4 extends the lever 3, the teeth of the gear block 8 are on the path of the follower pinion 12 rotating with the bucket wheel body 7. When the follower pinion 12 passes the gear block 8, the teeth of the two mesh with each other, and then the bucket wheel body 7 continues to rotate, causing the follower pinion 12 to rotate under the action of the gear block 8. The entire distance that the follower pinion 12 passes through the teeth of the gear block 8 can cause the follower pinion 12 to rotate 180°.

[0088] It should be noted that the fixing column 9 is clamped by the steel ball in the spring ball device 13 before and after being locked, that is, before and after the follower pinion 12 rotates 180°, so that the follower pinion 12 cannot rotate when it is not in contact with the gear block 8, keeping the direction of the arc groove 15 on the follower pinion unchanged.

[0089] Further,

[0090] Each hopper 1 is provided with a contact sensor at its extreme turning position, and the contact sensor is connected to the bucket wheel machine control terminal via an electrical signal;

[0091] A rotation angle sensor is provided on the rotating shaft of each follower pinion 12, and the angle sensor is connected to the bucket wheel excavator control terminal via an electrical signal.

[0092] Further,

[0093] The form of electrical signal transmission is wired or wireless.

[0094] Further,

[0095] The follower pinion 12 comprises a gear and a round tube, wherein the gear is fixed to the round tube;

[0096] The spring ball device 13 comprises: a spring and a steel ball, wherein the steel ball is arranged at the end of the spring extension end;

[0097] The spring ball device 13 is embedded in the side wall of the circular tube of the follower pinion 12;

[0098] The lock seat 11 consists of a steel plate with a semicircular arc on the upper part and a round steel. The round tube is rotatably assembled with the round steel of the lock seat 11 via a rotating shaft. The outer surface of the round steel has two radial arc-shaped grooves with a depth greater than or equal to 1 / 3R, which serve as slideways for the steel balls in the spring ball device 13 and limit the axial movement of the steel balls along the lock seat 11. The arc-shaped grooves have two ball pits with a depth greater than or equal to 1 / 2R at the 0° and 180° positions along the circumferential direction, where R is the radius of the steel balls of the spring ball device 13.

[0099] As the follower pinion 12 rotates, the steel ball in the spring ball device 13 sinks into the ball pit, so that after the automatic locker 5 is locked or unlocked, the follower pinion 12 will not rotate at will.

[0100] A reversing method for a bucket wheel hopper automatic reversing device comprises the following steps:

[0101] Step 1: Confirm that all hoppers 1 are in the first position locking state, that is, the fixing column 9 on this side is embedded in the arc-shaped groove 15 of the locker 5 on this side. This state is the initial state of the bucket wheel body 7;

[0102] Step 2: unlocking action, starting the driving device of the bucket wheel body 7;

[0103] Step three, determine whether the lever 3 is between the two hoppers through the photoelectric signal sensor; when it is determined that the lever 3 is between the two hoppers, control the telescopic device 4 to drive the lever 3 and the gear block 8 to extend forward; as the bucket wheel body 7 rotates, the gear block 8 engages with the corresponding follower pinion 12 on the locker 5, driving the follower pinion 12 to rotate 180°, causing the arc-shaped groove 15180° to flip, thereby releasing the locking stop state of the fixed column 9; at the same time, the lever 3 cooperates with the hopper toggle U-shaped stop 2 to realize the gradual rotation and tilting of the hopper 1 around the pin 6. During the process, the gear block 8 engages with the follower pinion 12 on the locker 5 on the other side of the hopper 1, causing the arc-shaped groove 15180° of the follower pinion 12 to flip to the locking stop position;

[0104] Step 4: Confirm that all hoppers 1 are in the second position locking state, all hoppers 1 have completed 180° flipping, and the fixing column 9 on this side is embedded in the arc-shaped groove 15 of the corresponding lock 5 on the corresponding side to lock the stop;

[0105] Step five: stop reversing, control the bucket wheel body 7 to stop rotating, control the telescopic device 4 to drive the lever 3 and the gear block 8 to retract, and then start the equipment to carry out the material taking operation in the direction after reversing.

[0106] Specifically, a number of hoppers 1 are evenly arranged on the circumferential side of the bucket wheel body 7. Two fixing columns 9 are arranged on one side of the hopper 1. The angular bisector of the line connecting the two fixing columns 9 and the pin 6 is the center line of the entire hopper, that is, the entire hopper is symmetrical with respect to the center of this line. The bucket wheel body 7 and the hopper 1 are hinged by the pin 6. The axes of several pins 6 are on the same circumference, and the axis of the circumference is concentric with the axis of the bucket wheel body 7. Two sets of automatic lockers 5 are respectively provided on both sides of each hopper 1 and arranged on one side of the outer circumference of the bucket wheel body 7, for the two actions of unlocking and locking the hopper 1. The follower pinions 12 and arc-shaped grooves 15 on all automatic lockers 5 are on the same circumference, and the circumference is concentric with the axis of the bucket wheel body 7. The initial states of the two sets of automatic locks 5 are opposite. The initial state of one lock 5 is to lock one of the fixed columns 9 on the hopper 1, that is, the arc-shaped groove 15 on the automatic lock 5 opens inward, pointing to the axis of the bucket wheel body 7. The initial state of the other automatic lock 5 is that the arc-shaped groove 15 on it opens outward, preparing to lock the other fixed column 9 on the hopper 1 after the hopper 1 is completely turned over. The telescopic device 4 is arranged and fixed on the retaining frame 14 of the bucket wheel body 7. The bucket wheel body 7 and the retaining frame 14 rotate relative to each other in the operating state. When reversing is required, the rotation direction of the bucket wheel body 7 is opposite to the previous rotation direction during operation, that is, the bucket wheel body 7 reverses, and the rotation speed is much lower than the operating speed. The photoelectric signal sensor determines whether to trigger the telescopic device 4.

[0107] When the lever 3 is located in the middle space between two adjacent hoppers 1, the telescopic device 4 is triggered, driving the gear block 8 and the lever 3 to extend forward, extending to the width range of the U-shaped stopper 2 on the hopper 1, and there is a certain gap from the side wall of the hopper 1, such as Figure 2 After the bucket wheel 7 is extended to the right position, the tooth block 8 first contacts the follower pinion 12 on the automatic lock 5, driving the follower pinion 12 and the arc groove 15 to rotate 180 degrees to unlock the hopper 1, releasing the rotational freedom of the hopper 1 along the pin 6, so that the hopper 1 can rotate. At this time, the hopper does not rotate. Figure 3 shown.

[0108] The bucket wheel body 7 continues to reverse, and the hopper 1 does not rotate because its center of gravity is on the right side of the pin 6. As the bucket wheel body 7 reverses, the lever 3 contacts the U-shaped stopper 2, which moves the hopper, causing the hopper 1 to rotate along the pin 6. The fixed column 9 is about to leave the arc groove 15. Figure 4 shown.

[0109] The following movement is the composite movement of the entire mechanism: including the rotation of the bucket wheel body 7 along its axis, the rotation of the hopper 1 along the pin 6, and the relative sliding of the lever 3 on the arc surface of the U-shaped stopper 2, as shown in FIG. Figure 5 shown.

[0110] like Figure 6 As shown in FIG, this state is a critical state in the movement of the entire mechanism. As the bucket wheel body 7 continues to reverse, the center of gravity of the hopper 1 shifts to the left side of the pin 6. Due to gravity, the hopper 1 rotates along the pin 6. The other side of the U-shaped stopper (2) is in contact with the lever 3 relative to the movement of the bucket wheel body in a short period of time. It should be noted that the driving force for the rotation of the hopper at this time is the weight of the hopper itself rather than the rotation of the bucket wheel body. Figure 7 shown.

[0111] The bucket wheel body 7 continues to rotate, and the entire mechanism continues the compound motion mentioned above. The difference is that the movement trajectory of the lever 3 relative to the U-shaped stop 2 is opposite to the previous one, until the hopper 1 is completely reversed. At this time, the other fixed column 9 on the hopper 1 is not locked by the other automatic lock 5, that is, the arc groove 15 opens outward, as shown in FIG. Figure 8 shown.

[0112] The bucket wheel body 1 continues to rotate, the gear block 8 contacts the follower pinion 12 on the automatic locker, the arc groove 15 rotates 180 degrees, and the opening points inward to the axis of the bucket wheel body 7. From then on, the reversal of the single hopper 1 is completed and locked by the locker 5. Figure 9 shown.

[0113] The bucket wheel body continues to reverse and automatically reversing the next hopper until all hoppers are reversing. A contact sensor is set on each pin shaft 6 to determine the hopper reversing status. A rotation angle sensor is set on the follower pinion 12 on each automatic locker 5 to determine the locking status of the automatic locker. Based on the above detection, it is determined whether the reversal of all hoppers is completed, and the telescopic device 4 is controlled to drive the lever 3 and the gear block 8 to retract. Then, the equipment can be started to carry out the material picking operation in the direction after reversing.

[0114] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A bucket wheel hopper automatic reversing device, characterized in that: It comprises a bucket wheel body (7), a retaining frame (14) for supporting the bucket wheel body (7), and a plurality of hoppers (1) hingedly connected to the bucket wheel body (7) via a pin (6); Two fixed columns (9) fixed to one side of the hopper (1), and a hopper U-shaped stopper (2) fixed to the same side of the hopper (1) as the fixed columns (9); The two fixing columns (9) are respectively arranged on the left and right sides of the center line of the fixed side surface, and the center axes of the two fixing columns (9) are at the same distance from the center axis of the pin shaft (6); The bucket wheel body (7) is provided with a locker (5) which cooperates with a fixed column (9) close to the bucket wheel body (7) to lock when the hopper (1) is in an extreme position of flipping around the pin shaft (6); A telescopic device (4) is fixed on the retaining frame (14), and a shifting rod (3) is fixed to the telescopic end of the telescopic device (4). The end of the shifting rod (3) can be inserted into the hopper shifting stop (2) of the hopper to achieve a stop. In the stopped state, the bucket wheel body (7) rotates to cause the hopper (1) to flip. The locker (5) comprises: a locker seat (11) fixed on the bucket wheel body (7), a follower pinion (12) and a tooth block (8) assembled on the locker seat (11) by rotating the shaft, and a spring ball device (13) arranged inside the follower pinion (12) and radially locking the follower pinion (12); The central axis of the rotating shaft of the follower pinion (12) is parallel to the central axis of the pin (6); The end of the follower pinion (12) facing the hopper (1) is provided with an axially extending arc-shaped groove (15); The fixing column (9) is embedded in the arc-shaped groove (15) to achieve locking and stopping; The tooth block (8) is fixed to the telescopic end of the telescopic device (4) and moves synchronously with the shifting rod (3); When the gear block (8) is in the stop position when the telescopic device (4) extends the lever (3), the teeth of the gear block (8) are on the path of the follower pinion (12) rotating along with the bucket wheel body (7). When the follower pinion (12) passes through the gear block (8), the teeth of the two mesh with each other, and then the bucket wheel body (7) continues to rotate, causing the follower pinion (12) to rotate under the action of the gear block (8). The entire process of the follower pinion (12) passing through the teeth of the gear block (8) can cause the follower pinion (12) to rotate 180°. The fixing column (9) is caught by the steel ball in the spring ball device (13) before and after being locked, that is, before and after the follower pinion (12) rotates 180 degrees, so that the follower pinion (12) cannot rotate when it is not in contact with the tooth block (8), and the direction of the arc groove (15) on the follower pinion remains unchanged.

2. The automatic reversing device for a bucket wheel hopper according to claim 1, characterized in that: Each hopper (1) is provided with a contact sensor at its extreme turning position, and the contact sensor is connected to the bucket wheel machine control terminal via an electrical signal; A rotation angle sensor is provided on the rotating shaft of each follower pinion (12), and the angle sensor is connected to the bucket wheel machine control terminal via an electrical signal.

3. The automatic reversing device for a bucket wheel hopper according to claim 2, characterized in that: The above-mentioned electrical signal transmission form is wired or wireless.

4. The automatic reversing device for a bucket wheel hopper according to claim 3, characterized in that: The above-mentioned follower pinion (12) includes: a gear and a round tube; The spring ball device (13) comprises: a spring and a steel ball; The spring ball device (13) is embedded in the side wall of the circular tube of the follower pinion (12); The lock seat (11) is composed of a steel plate with a semicircular arc on the upper part and a round steel. The outer surface of the round steel has two arc-shaped grooves with a depth greater than or equal to 1 / 3R in the radial direction, which serve as a slideway for the steel ball in the spring ball device (13) to limit the axial movement of the steel ball along the lock seat (11). On the arc-shaped groove, two ball pits with a depth greater than or equal to 1 / 2R are punched at the 0° and 180° positions along the circumferential direction, where R is the radius of the steel ball of the spring ball device (13); As the follower pinion (12) rotates, the steel ball in the spring ball device (13) sinks into the ball pit, so that after the automatic locker (5) is locked or unlocked, the follower pinion (12) does not rotate at will.

5. The reversing method of the bucket wheel hopper automatic reversing device according to claim 1, characterized in that: The following steps are included: Step 1: confirming the first position locking state of all hoppers (1), that is, the fixing column (9) on this side is embedded in the arc groove (15) of the locker (5) on this side, and this state is the initial state of the bucket wheel body (7); Step 2: unlocking action, starting the driving device of the bucket wheel body (7); Step three, judging whether the shifting rod (3) is between the two hoppers by means of a photoelectric signal sensor; when it is determined that the shifting rod (3) is between the two hoppers, controlling the telescopic device (4) to drive the shifting rod (3) and the tooth block (8) to extend forward; as the bucket wheel body (7) rotates, the tooth block (8) engages with the corresponding follower pinion (12) on the locker (5), driving the follower pinion (12) to rotate 180°, causing the arc groove (15) to flip 180°, thereby releasing the locking stop state of the fixed column (9); at the same time, the shifting rod (3) cooperates with the hopper shifting U-shaped stop (2) to realize the gradual rotation and tilting of the hopper (1) around the pinion (6), and during the process, the tooth block (8) engages with the follower pinion (12) on the locker (5) on the other side of the hopper (1), causing the arc groove (15) of the follower pinion (12) to flip 180° to the locking stop position; Step 4: confirm that all hoppers (1) are in the second position locking state, all hoppers (1) have completed 180° flipping, and the fixing column (9) on this side is embedded in the arc groove (15) of the corresponding locker (5) on the corresponding side to lock the stopper; Step 5: stop reversing, control the bucket wheel body (7) to stop rotating, control the telescopic device (4) to drive the lever (3) and the gear block (8) to retract, and start the equipment to carry out the material taking operation in the direction after reversing.

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