Telescopic dustproof device for guide chute and bucket-wheel stacker-reclaimer

Abstract

The invention relates to a guide chute telescopic dustproof device and a bucket-wheel stacker-reclaimer, the top of the guide chute is of an arc structure, an inclined funnel is arranged at the arc vault position, the inclined funnel comprises a fixed dustproof cover and a movable dustproof cover, the fixed dustproof cover and the movable dustproof cover are both mounted in the guide chute, and the movable dustproof cover is mounted in the guide chute. The fixed dust cover and the movable dust cover are both arc-shaped plates, the radian of the fixed dust cover and the radian of the movable dust cover are matched with the arc face of the guide groove, and the movable dust cover can slide to the position partially or completely coincident with the fixed dust cover or does not coincide with the fixed dust cover based on the working state of the guide groove. And the two parts are connected to form a sealing structure covering the upper part of the guide chute. In the implementation process, at all working angles, flying dust generated when materials impact the cantilever skin can be effectively prevented from overflowing out of the material guide groove, and environmental pollution is reduced. The mechanism does not need an additional power source, the function of the mechanism can be achieved by means of the pitching action of the guide groove, and energy is saved.

Description

Technical Field

[0001] The invention relates to the technical field of bulk material loading and unloading, and in particular to a material guide chute telescopic dust prevention device and a bucket wheel stacker and reclaimer thereof. Background Art

[0002] A stacker-reclaimer is a bulk material loading and unloading machine used for material handling. The materials unloaded by equipment such as car tippers and ship unloaders are transported through the ground and tail car belt conveyor system, thrown into the head hopper of the tail car, and then fall onto the cantilever beam belt of the stacker-reclaimer through the inclined funnel and the guide chute. The cantilever beam belt then piles the materials into the material yard. When the cantilever beam moves up or down, the guide chute moves synchronously with the cantilever, while the position of the inclined funnel is relatively fixed and does not participate in the pitching movement. Regardless of whether the cantilever is tilted up or down, the guide chute will produce a certain relative displacement with the inclined funnel. Therefore, an opening needs to be opened on the arc plate at the top of the guide chute on the relative motion trajectory with the inclined funnel to avoid collision with the inclined funnel (such as Figure 1 As shown). In order to avoid dust from the open part, the commonly used sealing method is rubber sheet sealing. The rubber sheet is fixed on the inclined funnel and covers the open position of the guide trough by its own weight, which plays a role in sealing and dust suppression. However, when the working pitch angle of the equipment is large, the displacement distance of the guide trough relative to the inclined funnel becomes larger. In order to avoid interference, the open size of the guide trough needs to be increased accordingly, and then the length of the rubber sheet also needs to be increased accordingly. This will cause the rubber sheet on the front side of the guide trough away from the end (far end) of the inclined funnel to hit the flat section structure of the guide trough before the cantilever reaches the working limit position, causing the rubber sheet to arch and fail to achieve the sealing effect, or the far end of the rubber sheet on the rear side of the guide trough has fallen out of the arc plate of the dome top of the guide trough before the cantilever reaches the working limit position, touching the conveying belt or nearby rollers, thereby affecting the transportation of materials. In addition, when pitching, the guide trough and the fixed rubber plate are always in relative motion, and the long rubber plate itself has weak rigidity. The friction generated by the relative motion will also cause the rubber plate to twist and deform irregularly, failing to achieve the required sealing effect. The rubber plate may even fall into the opening of the guide trough, causing complete failure of the seal. Summary of the invention

[0003] According to the technical problems raised above, a new telescopic dustproof form is provided for sealing the material guide chute at the tail of the cantilever of a stacker-reclaimer with large-luffing pitching operation.

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

[0005] A telescopic dustproof device for a material guide trough, wherein the top of the material guide trough is an arc structure, and an inclined funnel is arranged at the position of the arc arch, comprising a fixed dust cover and a movable dust cover, wherein the fixed dust cover and the movable dust cover are both installed in the material guide trough, and the fixed dust cover and the movable dust cover are both arc plates, and the curvature of the two is adapted to the arc surface of the material guide trough, and the movable dust cover can slide to a position partially overlapping or completely overlapping with the fixed dust cover, or not overlapping with the fixed dust cover, based on the working state of the material guide trough, and the two are connected to form a sealing structure covering the top of the material guide trough.

[0006] Furthermore, L-shaped guide rails are provided on the left and right sides of the top of the material guide trough, a traction rod is provided at the end of the guide rail, and a traction block is provided in the middle of the guide rail. When the movable dust cover is in the waiting recovery position, the traction rod can contact with the front end surface of the curved plate of the movable dust cover to push the movable dust cover to be recovered; when the movable dust cover is in the waiting release position, the traction block can contact with the front end of the movable dust cover to drive the movable dust cover to be pulled out.

[0007] Furthermore, the fixed dust cover has an outer shape of an arc-shaped steel plate structure and is connected to the inclined funnel by bolts.

[0008] Furthermore, the left and right sides of the fixed dust cover are L-shaped vertical edge structures, which are embedded with the outer sides of the L-shaped guide rails on the material guide trough to play a guiding and centering role.

[0009] Furthermore, a polyurethane arc plate is provided between the L-shaped vertical edge and the L-shaped guide rail, and the polyurethane arc plate is fixed under the L-shaped vertical edge by countersunk bolts. A limit baffle is provided at the front end of the fixed dust cover to limit the moving distance of the movable dust cover.

[0010] Furthermore, a follower circular tube is provided at the front end of the movable dust cover, and a stop circular tube is provided at the end. When the movable dust cover is in the waiting-for-releasing position, the traction block can contact with the follower circular tube to drive the movable dust cover to be pulled out; when the movable dust cover reaches the limit position of the waiting-for-releasing position, the stop circular tube contacts with the limit baffle at the front end of the fixed dust cover.

[0011] Furthermore, two polyurethane plates are respectively arranged between the left and right sides of the movable dust cover and the material guide trough.

[0012] The invention also discloses a bucket wheel stacker and reclaimer using the material guide chute telescopic dust prevention device.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] (1) The problem of poor sealing effect of the rubber sealing plate in the prior art when pitching at a large angle is avoided. The present invention provides a recyclable movable dust cover. When the material guide trough is tilted up to the maximum angle, the movable dust cover is also driven to the extreme position. At this time, the movable dust cover is on the slope of the arc plate of the material guide trough. The stop tube provided at the end of the movable dust cover will contact the limit stop plate at the front end of the fixed dust cover at this extreme position, preventing the movable dust cover from separating from the fixed dust cover, thereby ensuring the continuity of the dust cover above the opening of the material guide trough.

[0015] (2) At all working angles, it can effectively reduce the dust generated by the material impacting the cantilever belt and overflowing the material guide chute, thereby reducing environmental pollution.

[0016] (3) The mechanism does not require an additional power source, and the function of the mechanism can be realized by means of the pitching movement of the guide trough itself, thus saving energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 creative labor.

[0018] Figure 1 The present invention is a schematic diagram of the structure in which an open arc plate is provided on the top of the material guide chute in the prior art.

[0019] Figure 2 It is a schematic structural diagram of the telescopic dustproof device of the present invention.

[0020] Figure 3 It is a schematic diagram of the material guide trough structure of the present invention.

[0021] Figure 4 This is a schematic diagram of the structure of the fixed dust cover of the present invention.

[0022] Figure 5 It is a schematic diagram of the structure of the movable dust cover of the present invention.

[0023] In the figure: 1. material guide trough; 2. inclined funnel; 3. fixed dust cover; 4. movable dust cover; 5. L-shaped guide rail; 6. traction rod; 7. traction block; 8. L-shaped vertical edge structure; 9. polyurethane arc plate; 10. limit baffle; 11. follower round tube; 12. stop round tube; 13. polyurethane plate. DETAILED DESCRIPTION

[0024] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments 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.

[0025] 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 by no means 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 creative work are within the scope of protection of the present invention.

[0026] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0027] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, the numerical expressions and numerical values ​​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 technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0028] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the 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 contours of each component itself.

[0029] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. 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 figure. For example, if the device in the accompanying 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.

[0030] 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. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0031] like Figures 2 to 5 As shown, an embodiment of the present invention discloses a telescopic dust-proof device for a material guide trough, comprising a material guide trough 1, an inclined funnel 2, a fixed dust cover 3, a movable dust cover 4 and other parts. The top of the material guide trough is an arc structure, and the inclined funnel is arranged at the position of the arc arch, comprising a fixed dust cover and a movable dust cover, and the fixed dust cover and the movable dust cover are both installed in the material guide trough, and the fixed dust cover and the movable dust cover are both arc plates, and the curvature of the two is adapted to the arc surface of the material guide trough. The movable dust cover can slide to a position where it partially overlaps or completely overlaps with the fixed dust cover, or does not overlap with the fixed dust cover based on the working state of the material guide trough. The two are connected to form a sealing structure covering the top of the material guide trough.

[0032] In this embodiment, the inclined funnel is disposed in the center as a whole, and two groups of fixed dust covers 3 and movable dust covers 4 are symmetrically disposed on both sides thereof.

[0033] L-shaped guide rails 5 are provided on the left and right sides of the top of the material guide trough, a traction rod 6 is provided at the end of the guide rail, and a traction block 7 is provided in the middle of the guide rail. When the movable dust cover is in the waiting recovery position, the traction rod can contact with the front end surface of the curved plate of the movable dust cover to push the movable dust cover to be recovered; when the movable dust cover is in the waiting release position, the traction block can contact with the front end of the movable dust cover to drive the movable dust cover to be pulled out.

[0034] The fixed dust cover is an arc-shaped steel plate structure and is connected to the inclined funnel by bolts.

[0035] The left and right sides of the fixed dust cover are L-shaped vertical edge structures 8, which are embedded with the outer sides of the L-shaped guide rails on the guide trough to play a guiding and centering role.

[0036] A polyurethane arc plate 9 is provided between the L-shaped vertical edge and the L-shaped guide rail, and the polyurethane arc plate is fixed to the bottom of the L-shaped vertical edge by countersunk bolts. A limit baffle 10 is provided at the front end of the fixed dust cover to limit the moving distance of the movable dust cover. The smooth surface of the polyurethane plate can effectively reduce the friction generated by the relative movement between the fixed dust cover and the guide trough, and reduce the noise and resistance caused by friction.

[0037] The movable dust cover is located in the gap between the fixed dust cover and the arc plate at the top of the material guide trough, and is tightly attached to the top of the arc plate of the material guide trough by its own weight. A 1-2mm gap is left between the inner side of the L-shaped guide rail above the material guide trough and the edge of the movable dust cover, which plays a role in limiting the left and right movement of the movable dust cover. A follower circular tube 11 is provided at the front end of the movable dust cover, and a stop circular tube 12 is provided at the end. When the movable dust cover is in the waiting position for release, the traction block can contact with the follower circular tube to drive the movable dust cover to be pulled out; when the movable dust cover reaches the limit position of the waiting position for release, the stop circular tube contacts with the limit baffle at the front end of the fixed dust cover.

[0038] There are two polyurethane plates 13 between the left and right sides of the movable dust cover and the guide trough. The polyurethane plates with smooth surfaces can effectively reduce the friction caused by the relative movement between the movable dust cover and the guide trough, and reduce the noise and resistance caused by the friction.

[0039] The specific principles of the present invention are as follows:

[0040] Taking the movable and fixed dust covers at the rear side of the guide trough as an example (the same applies to the front side), one action cycle starts from the lowest state of the cantilever beam, to the highest state of the upward position, and then to the lowest state of the downward position. When the cantilever beam is at the lowest position, the movable dust cover is in a retracted state, hidden between the fixed dust cover and the arc plate at the top of the guide trough. As the cantilever drives the guide trough to tilt up to a certain angle (if the movement continues, the opening of the guide trough will leak out and dust will overflow), the traction block in the middle of the guide rail of the guide trough will touch the follower circular tube at the front end of the movable dust cover, and drive the movable dust cover to be pulled out, covering the gradually increasing opening between the guide trough and the inclined funnel, playing a dust-proof role. When the material guide chute is tilted up to the maximum angle, the movable dust cover is also driven to the extreme position. At this time, the movable dust cover is on the slope of the arc plate of the material guide chute. In order to prevent it from freely sliding down due to its own gravity and other factors and uncontrollably separating from the fixed dust cover, the stop tube arranged at the end of the movable dust cover will contact the limit stop plate at the front end of the fixed dust cover at this extreme position, preventing the movable dust cover from separating from the fixed dust cover, thereby ensuring the continuity of the dust cover above the opening of the material guide chute.

[0041] When the cantilever beam pitches down from the highest position, the guide chute pitches down accordingly, and the traction rod at the end of the guide rail of the guide chute first contacts the front end surface of the movable dust cover arc plate, pushing the movable dust cover to retract, and when the cantilever pitches down to the lowest position, the movable dust cover moves to the initial retracted state and is completely hidden under the fixed dust cover. This completes a cycle.

[0042] 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 telescopic dust-proof device for a material guide chute, characterized in that: The top of the material guide trough is an arc structure, and the inclined funnel is arranged at the position of the arc arch, including a fixed dust cover and a movable dust cover, both of which are installed in the material guide trough, and both of which are arc-shaped plates, and the curvature of the two is adapted to the arc surface of the material guide trough. The movable dust cover can slide to a position where it partially overlaps or completely overlaps with the fixed dust cover, or does not overlap with the fixed dust cover based on the working state of the material guide trough. The two are connected to form a sealing structure covering the top of the material guide trough.

2. The material guide chute telescopic dust-proof device according to claim 1, characterized in that: L-shaped guide rails are provided on the left and right sides of the top of the material guide trough, a traction rod is provided at the end of the guide rail, and a traction block is provided in the middle of the guide rail. When the movable dust cover is in the waiting recovery position, the traction rod can contact with the front end surface of the curved plate of the movable dust cover to push the movable dust cover to be recovered; when the movable dust cover is in the waiting release position, the traction block can contact with the front end of the movable dust cover to drive the movable dust cover to be pulled out.

3. The material guide chute telescopic dust-proof device according to claim 1, characterized in that: The fixed dust cover is an arc-shaped steel plate structure and is connected to the inclined funnel by bolts.

4. The material guide chute telescopic dust-proof device according to claim 1, characterized in that: The left and right sides of the fixed dust cover are L-shaped vertical edge structures, which are embedded with the outer side of the L-shaped guide rail on the guide trough to play a guiding and centering role.

5. The material guide chute telescopic dust-proof device according to claim 1, characterized in that: A polyurethane arc plate is provided between the L-shaped vertical edge and the L-shaped guide rail. The polyurethane arc plate is fixed under the L-shaped vertical edge by countersunk bolts. A limit baffle is provided at the front end of the fixed dust cover to limit the moving distance of the movable dust cover.

6. The material guide chute telescopic dust-proof device according to claim 1, characterized in that: A follower circular tube is provided at the front end of the movable dust cover, and a stop circular tube is provided at the end. When the movable dust cover is in the waiting-to-release position, the traction block can contact with the follower circular tube to drive the movable dust cover to be pulled out; when the movable dust cover reaches the limit position of the waiting-to-release position, the stop circular tube contacts with the limit baffle at the front end of the fixed dust cover.

7. The material guide chute telescopic dust-proof device according to claim 6, characterized in that: There are two polyurethane plates respectively between the left and right sides under the movable dust cover and the material guide trough.

8. A bucket wheel stacker and reclaimer using the material guide chute telescopic dust prevention device according to any one of claims 1 to 7.

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