A retractable hopper shield

Abstract

The present invention proposes a retractable hopper guard, including a first hopper guard, a second hopper guard and a first track, wherein the first hopper guard and the second hopper guard are both composed of a plurality of arc-shaped telescopic sleeves, the first hopper guard and the second hopper guard are arranged head to tail to form a ring and share a first telescopic sleeve at the tail, the middle position of the plurality of telescopic sleeves is the second telescopic sleeve, the second telescopic sleeve is provided with a feed inlet and the feed inlet is located directly below the first reclaimer connected to the upper rotary mechanism or the second reclaimer connected to the lower rotary mechanism; the current telescopic sleeves extending to both sides from the second telescopic sleeve are sequentially fitted and connected below the previous telescopic sleeve. The present invention solves the problems that the circular mixing stacker reclaimer lacks hopper guard protection, the feed inlet of the existing hopper guard cannot adapt to the position of the reclaimer in real time, and the baffle-shielded hopper guard has a complex structure and high cost.

Description

Technical Field

[0001] The invention relates to the technical field of safety protection of a stacker-reclaimer, and in particular to a retractable hopper shield. Background Art

[0002] The circular mixing stacker-reclaimer is a device that integrates stacking and reclaiming, and is placed in a circular steel structure shed. The circular stacker-reclaimer performs homogenization, storage, and transportation on the materials. The reclaimer of the circular mixing stacker-reclaimer needs to provide safety protection around the center column below it during the mixing and reclaiming operation or the single reclaiming operation to prevent the materials from scattering when the reclaimer is transferring materials to the center hopper.

[0003] Traditional stacker-reclaimers usually lack or use baffles to cover the feeding port for protection. When a stacker-reclaimer lacks the safety protection of a hopper shield, materials scatter when it is retrieving and feeding materials into the hopper, which not only endangers the instruments and facilities below, shortens the service life of the instruments and facilities, but also poses a serious threat to the staff below. When a hopper shield that uses a baffle to cover the feeding port is working, since the positions and numbers of the baffles and the feeding port are fixed, when the stacker-reclaimer is retrieving and feeding materials from different directions around it, the position of the feeding port cannot be adapted to the position of the stacker-reclaimer in real time, causing inconvenience in retrieving materials. In addition, the baffle that covers the feeding port occupies a large space when opened and an effective control mechanism needs to be added to each baffle, making the overall structure less compact and the use of a large number of control mechanisms increases the complexity of the structure and the economic cost.

[0004] The Chinese patent application "CN201420655712.2 A circular material yard mixing stacker and a circular material yard portal mixing stacker reclaimer" proposes a stacker reclaimer for mixing materials, but there is no hopper cover above the hopper. When the reclaimer is transporting materials into the hopper, there is a gap between the two reclaimers, and materials are easily scattered in the gap. The scattered materials not only endanger the instruments and facilities below, but also threaten the staff below. Summary of the invention

[0005] In order to solve the problems in the prior art that the circular mixing stacker reclaimer lacks hopper guard protection, the inlet of the existing hopper guard cannot adapt to the position of the reclaimer in real time, and the baffle shielding hopper guard has a complex structure and high cost, the present invention proposes a retractable hopper guard.

[0006] A retractable hopper guard comprises a first hopper guard connected to an upper rotary mechanism, a second hopper guard connected to a lower rotary mechanism, and a first track supporting the first hopper guard and the second hopper guard to slide, wherein the first hopper guard and the second hopper guard are both composed of a plurality of arc-shaped telescopic sleeves, the first hopper guard and the second hopper guard are arranged end to end oppositely to form a ring and share a first telescopic sleeve at the tail, the middle position of the plurality of telescopic sleeves is a second telescopic sleeve, a feeding port is provided on the second telescopic sleeve and the feeding port is located directly below a first reclaimer connected to the upper rotary mechanism or a second reclaimer connected to the lower rotary mechanism;

[0007] The first track includes a circular inner rail and an outer rail. Except for the first telescopic joint sleeve, each of the telescopic joint sleeves is provided with first support members respectively supported on the inner rail and the outer rail on both sides close to one end of the first telescopic joint sleeve, and the second telescopic joint sleeve is provided with first support members at both ends. The current telescopic joint sleeve extending to both sides from the second telescopic joint sleeve is sequentially fitted and connected under the previous telescopic joint sleeve.

[0008] Furthermore, each group of the first support members includes vertical legs and transverse connecting sections, one end of the connecting section is connected to the side of the end of the telescopic sleeve, and the other end is connected to the legs, and the legs are supported on the first rail.

[0009] Furthermore, a first wheel matching the first track is arranged below the support leg, a cleaning device is arranged in front of the first wheel, and the cleaning device is fixed on the support leg.

[0010] Furthermore, except for the first telescopic section sleeve, brackets with a "J"-shaped cross-section are arranged on both sides below each telescopic section sleeve, and except for the second telescopic section sleeve, a second support member is arranged at one end of each telescopic section sleeve away from the first support member, and the second support member below the current telescopic section sleeve extending from both sides to the middle on the first hopper guard and the second hopper guard is mounted on the bracket below the next telescopic section sleeve.

[0011] Furthermore, the horizontal section of the bracket faces the center of the telescopic joint sleeve and baffles are provided at both ends of the bracket, a second track is provided in the bracket, the second support member is supported on the second track and a second wheel matching the second track is provided below it, and a cleaning device is provided in front of the second wheel.

[0012] Furthermore, a limiting device is provided between the telescopic joint sleeves at the head ends of the first hopper guard shield and the second hopper guard shield.

[0013] Furthermore, the limiting device includes a termination limiting member and an extreme limiting member, the termination limiting member is a distance sensor, and the extreme limiting member is a mechanical structure for limiting the travel of the first hopper guard cover and the second hopper guard cover.

[0014] Furthermore, the width of the telescopic sleeves on the first hopper guard shield and the second hopper guard shield gradually decreases as it extends from the second telescopic sleeve to both sides.

[0015] Furthermore, a fixing bracket connected to the upper rotating mechanism or the lower rotating mechanism is provided on the second telescopic joint sleeves on both sides of the feed inlet.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention provides a retractable hopper guard, which forms an annular protective cover above the hopper through a first hopper guard and a second hopper guard composed of a telescopic sleeve. The space below the first reclaimer and the second reclaimer can be closed by telescoping the first hopper guard and the second hopper guard, thereby avoiding the potential safety hazard of material scattering caused by a gap between the two reclaimers.

[0018] When the mixing stacker reclaimer performs the material reclaiming operation, the upper slewing mechanism and the lower slewing mechanism start to rotate and find positions respectively, and the first hopper guard and the first reclaimer rotate along with the upper slewing mechanism to ensure that the first reclaimer can make the material enter the hopper through the feeding port below the first reclaimer during operation, and the second hopper guard and the second reclaimer rotate along with the lower slewing mechanism to ensure that the second reclaimer can make the material enter the hopper through the feeding port below the second reclaimer during operation, so as to flexibly and effectively realize the safety protection of the gap between the first reclaimer and the second reclaimer, and ensure the safety of personnel and upper and lower equipment;

[0019] The first track, the first support and the first wheel, and the second track, the second support and the second wheel are arranged to ensure the smoothness of the two circular hopper guards during rotation. The cleaning device is arranged to clean the first track and the second track to ensure that the wheels are not stuck when passing through. At the same time, a two-level protection device is arranged between the two hopper guards. The end limit member and the extreme limit member are used to form double limit protection for the two hopper guards, thereby ensuring the stability and reliability of the operation of the retractable hopper guard. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of a retractable hopper shield of the present invention.

[0021] Figure 2 The utility model is a schematic diagram of the structure of installing a retractable hopper guard in a stacker-reclaimer according to the present invention.

[0022] Figure 3 The invention discloses a retractable hopper shield. Figure 1 A schematic diagram of the enlarged structure in the middle.

[0023] Figure 4It is a schematic structural diagram of a second telescopic section sleeve of a retractable hopper shield of the present invention.

[0024] Figure 5 It is a structural schematic diagram of the first track and the first bracket of a retractable hopper shield of the present invention.

[0025] Figure 6 It is a schematic structural diagram of the first bracket of a retractable hopper shield not belonging to the second telescopic section of the present invention.

[0026] Figure 7 The present invention is a schematic diagram of the connection structure between a second telescopic section sleeve and a next telescopic section sleeve of a retractable hopper shield.

[0027] Figure 8 It is a structural schematic diagram of a second track and a second bracket of a retractable hopper shield of the present invention.

[0028] Fig. 9 The present invention is a schematic diagram of the contraction and overlapping structure of five telescopic sleeves of a contractible hopper shield.

[0029] The figure numbers are 1 for the upper rotating mechanism, 2 for the first hopper guard cover, 3 for the lower rotating mechanism, 4 for the second hopper guard cover, 5 for the telescopic sleeve, 501 for the first telescopic sleeve, 502 for the second telescopic sleeve, 7 for the first track, 701 for the inner track, 702 for the outer track, 8 for the first support member, 801 for the support leg, 802 for the connecting section, 9 for the limiting device, 10 for the bracket, 11 for the second support member, 12 for the first wheel, 13 for the cleaning device, 14 for the second track, 15 for the demisting module, 16 for the fixed bracket, 17 for the feeding port, 18 for the central column, 19 for the first reclaimer, and 20 for the second reclaimer. DETAILED DESCRIPTION

[0030] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments:

[0031] As shown in Fig. 1 to Fig. 4, a retractable hopper guard comprises a first hopper guard 2 connected to an upper rotary mechanism 1, a second hopper guard 4 connected to a lower rotary mechanism 3, and a first track 7 supporting the first hopper guard 2 and the second hopper guard 4 to slide, wherein the first hopper guard 2 and the second hopper guard 4 are both composed of a plurality of arc-shaped telescopic sleeves 5, the first hopper guard 2 and the second hopper guard 4 are arranged head to tail relative to each other to form a ring and share a first telescopic sleeve 501 at the tail, the middle position of the plurality of telescopic sleeves 5 is a second telescopic sleeve 502, the second telescopic sleeve 502 is provided with a feed inlet 17 and the feed inlet 17 is located directly below the first reclaimer 19 connected to the upper rotary mechanism 1 or the second reclaimer 20 connected to the lower rotary mechanism 3;

[0032] The first track 7 includes a circular inner rail 701 and an outer rail 702. Except for the first telescopic section sleeve 501, each of the telescopic section sleeves 5 is provided with first support members 8 respectively supported on the inner rail 701 and the outer rail 702 on both sides close to one end of the first telescopic section sleeve 501, and the second telescopic section sleeve 502 is provided with a first support member 8 at both ends. The current telescopic section sleeve 5 extending to both sides from the second telescopic section sleeve 502 is sequentially fitted and connected under the previous telescopic section sleeve 5.

[0033] The upper slewing mechanism 1 and the lower slewing mechanism 3 are both arranged on the central column 18 and can rotate around the central column 18. The rotation of the upper slewing mechanism 1 drives the first hopper guard 2 and the first material reclaimer 19 to rotate synchronously, and the rotation of the lower slewing mechanism 3 drives the second hopper guard 4 and the second material reclaimer 20 to rotate synchronously.

[0034] An annular protective cover is formed above the hopper by the first hopper guard 2 and the second hopper guard 4 composed of a telescopic sleeve 5. The rotation and extension of the first hopper guard 2 and the second hopper guard 4 can achieve closure of the space below the first reclaimer 19 and the second reclaimer 20, thereby avoiding the potential safety hazard of material scattering due to a gap between the two reclaimers.

[0035] As an implementation method, Figures 5 and 6 As shown, each group of the first support members 8 includes a vertical leg 801 and a horizontal connecting section 802 , one end of the connecting section 802 is connected to the side of the end of the telescopic section 5 , and the other end is connected to the leg 801 , and the leg 801 is supported on the first rail 7 .

[0036] Specifically, a first wheel 12 matching the first track 7 is disposed below the support leg 801 , a cleaning device 13 is disposed in front of the first wheel 12 , and the cleaning device 13 is fixed on the support leg 801 .

[0037] It can be understood that the provision of the first support member 8 enables the telescopic section sleeve 5 to be effectively supported at the bottom, so that the telescopic section sleeve 5 can perform orderly telescopic and rotating movements on the first track 7 .

[0038] The first wheel 12 is provided to convert sliding friction into rolling friction, so that the telescopic and rotating action of the telescopic section sleeve 5 is smoother. The cleaning device 13 is provided to ensure that there is no material or obstacle on the first track 7, thereby preventing the first wheel 12 from getting stuck when running on the first track 7.

[0039] As an implementation method, Figures 7-9As shown, except for the first telescopic section sleeve 501, brackets 10 with a "J"-shaped cross-section are provided on both sides below each telescopic section sleeve 5, and except for the second telescopic section sleeve 502, a second support member 11 is provided at the end of each telescopic section sleeve 5 away from the first support member 8, and the second support member 11 below the current telescopic section sleeve 5 extending from both sides to the middle on the first hopper guard 2 and the second hopper guard 4 is laid on the bracket 10 below the next telescopic section sleeve 5.

[0040] Specifically, the horizontal section of the bracket 10 faces the center of the telescopic joint sleeve 5 and baffles are provided at both ends of the bracket 10 (the baffles are not shown), a second track 14 is provided in the bracket 10, the second support member 11 is supported on the second track 14 and a second wheel 15 matching the second track 14 is provided therebelow, and a cleaning device 13 is provided in front of the second wheel 15.

[0041] It can be understood that, by setting the bracket 10 and the second support member 11, the end of the second support member 11 can be connected under the upper telescopic section sleeve 5, so as to realize the telescopic function of the first hopper guard 2 and the second hopper guard 4.

[0042] The baffles arranged at both ends of the bracket 10 ensure that the second support member 11 will not separate from the bracket 10. Similar to the arrangement of the first wheel 12, the sliding friction is converted into rolling friction through the arrangement of the second wheel 15, so that the telescopic and rotating action of the telescopic section sleeve 5 is smoother. The arrangement of the cleaning device 13 ensures that there is no material or obstacle on the second track 14, thereby avoiding the occurrence of jamming of the second wheel 15 when running on the second track 14.

[0043] As an implementation method, Figure 1 As shown, a limiting device 9 is provided between the telescopic sleeve 5 at the head end of the first hopper guard 2 and the second hopper guard 4 .

[0044] Specifically, the limiting device 9 includes a termination limiting member and an extreme limiting member, the termination limiting member is a distance sensor, and the extreme limiting member is a mechanical structure for limiting the travel of the first hopper guard 2 and the second hopper guard 4 .

[0045] The two hopper guards are provided with double limit protection by the end limit piece and the extreme limit piece, so that the two sets of hopper guards will not collide or interfere when they are extended and rotated at the same time, thus ensuring the stability and reliability of the operation of the retractable hopper guards.

[0046] As an implementation method, Figure 1 As shown, the width of the telescopic sleeve 5 on the first hopper shield 2 and the second hopper shield 4 gradually decreases from the second telescopic sleeve 502 to both sides.

[0047] It can be understood that the current telescopic joint sleeve 5 extending to both sides starting from the second telescopic joint sleeve 502 is arranged under the previous telescopic joint sleeve 5. In order to ensure the linkage telescopicity between the telescopic joint sleeves 5 and to prevent the overall thickness of the telescopic joint sleeves 5 from being too thick, the width of the current telescopic joint sleeve 5 is smaller than the width of the previous telescopic joint sleeve 5 to achieve the nested connection between the telescopic joint sleeves 5.

[0048] like Figure 1 As shown, the second telescopic sleeves 502 on both sides of the feed port 17 are provided with fixed brackets 16 connected to the upper rotating mechanism 1 or the lower rotating mechanism 3 .

[0049] Through this arrangement, the feed port 17 keeps synchronous rotation with the upper rotating mechanism 1 or the lower rotating mechanism 3, ensuring the correspondence between the position of the feed port 17 and the position of the first reclaimer 19 or the second reclaimer 20. When the first reclaimer 19 is in operation, the material can enter the hopper through the feed port 17 below the first reclaimer 19, and when the second reclaimer 20 is in operation, the material can enter the hopper through the feed port 17 below the second reclaimer 20.

[0050] When the first reclaimer 19 and the second reclaimer 20 work at the same time, the upper slewing mechanism 1 and the lower slewing mechanism 3 respectively start to rotate to find positions to drive the first reclaimer 19 and the second reclaimer 20 to reclaim materials, and the first hopper guard 2 follows the upper slewing mechanism 1 to telescope and rotate, ensuring that the first reclaimer 1 can allow materials to enter the hopper through the feeding port 17 below the first reclaimer 19 during operation, and the second hopper guard 4 follows the lower slewing mechanism 3 to telescope and rotate, ensuring that the second reclaimer 20 can allow materials to enter the hopper through the feeding port 17 below the second reclaimer 20 during operation.

[0051] When a single reclaimer is operating, the working conditions are divided into long-term and short-term. In the long-term single operation, another reclaimer is required to cooperate and avoid interference between the two reclaimers, that is, move the non-working reclaimer to allow the working reclaimer to rotate normally. At this time, the operation is the same as the working conditions of the two reclaimers, and will not be repeated. When it is a short-term single operation, since the position of the material pile is relatively fixed during short-term work and the range of rotation of the reclaimer is not large, taking the upper rotating mechanism 1 as an example, the first hopper guard 2 and the first reclaimer 19 follow the upper rotating mechanism 1 to be fixed, and the second hopper guard 4 and the second reclaimer 20 follow the lower rotating mechanism 3 to perform rotating material reclaiming operations, ensuring that the material can effectively fall into the hopper through the feeding port 17 below the second reclaimer 20, and flexibly and effectively realize the safety protection of the gap between the first reclaimer 19 and the second reclaimer 20, to ensure the safety of personnel and upper and lower equipment.

[0052] The embodiments described above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made according to the structures, features and principles described in the patent scope of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A retractable hopper guard, comprising a first hopper guard (2) connected to an upper rotating mechanism (1), a second hopper guard (4) connected to a lower rotating mechanism (3), and a first track (7) supporting the first hopper guard (2) and the second hopper guard (4) to slide, characterized in that: The first hopper guard (2) and the second hopper guard (4) are both composed of a plurality of arc-shaped telescopic sleeves (5), the first hopper guard (2) and the second hopper guard (4) are arranged end to end relative to each other to form a ring and share a first telescopic sleeve (501) at the tail end, the middle position of the plurality of telescopic sleeves (5) is a second telescopic sleeve (502), the second telescopic sleeve (502) is provided with a feed inlet (17), and the feed inlet (17) is located directly below a first reclaimer (19) connected to the upper rotary mechanism (1) or a second reclaimer (20) connected to the lower rotary mechanism (3); The first track (7) comprises a circular inner rail (701) and an outer rail (702); except for the first telescopic joint sleeve (501), both sides of each telescopic joint sleeve (5) close to one end of the first telescopic joint sleeve (501) are provided with first support members (8) respectively supported on the inner rail (701) and the outer rail (702); and both ends of the second telescopic joint sleeve (502) are provided with first support members (8); the current telescopic joint sleeve (5) extending to both sides from the second telescopic joint sleeve (502) is sequentially fitted and connected under the previous telescopic joint sleeve (5).

2. A retractable hopper shield according to claim 1, characterized in that: Each group of the first supporting members (8) comprises a vertical support leg (801) and a horizontal connecting section (802), wherein one end of the connecting section (802) is connected to the side surface of the end of the telescopic sleeve (5) and the other end is connected to the support leg (801), and the support leg (801) is supported on the first rail (7).

3. A retractable hopper shield according to claim 2, characterized in that: A first wheel (12) matching the first track (7) is arranged below the support leg (801), a cleaning device (13) is arranged in front of the first wheel (12), and the cleaning device (13) is fixed on the support leg (801).

4. A retractable hopper shield according to claim 1, characterized in that: Each telescopic sleeve (5) except the first telescopic sleeve (501) is provided with brackets (10) with a "J"-shaped cross section on both sides below, and each telescopic sleeve (5) except the second telescopic sleeve (502) is provided with a second support member (11) at one end away from the first support member (8), and the second support member (11) below the current telescopic sleeve (5) extending from both sides to the middle on the first hopper shield (2) and the second hopper shield (4) is mounted on the brackets (10) below the next telescopic sleeve (5).

5. A retractable hopper shield according to claim 4, characterized in that: The horizontal section of the bracket (10) faces the center of the telescopic joint sleeve (5) and baffles are provided at both ends of the bracket (10). A second track (14) is provided in the bracket (10). The second support member (11) is supported on the second track (14) and a second wheel (15) matching the second track (14) is provided below the second support member (11). A cleaning device (13) is provided in front of the second wheel (15).

6. A retractable hopper shield according to claim 1, characterized in that: A limiting device (9) is provided between the telescopic sleeve (5) at the head end of the first hopper guard (2) and the second hopper guard (4).

7. A retractable hopper shield according to claim 6, characterized in that: The limiting device (9) comprises a termination limiting member and a limit limiting member, the termination limiting member is a distance sensor, and the limit limiting member is a mechanical structure for limiting the travel of the first hopper guard (2) and the second hopper guard (4).

8. A retractable hopper shield according to claim 1, characterized in that: The width of the telescopic sleeves (5) on the first hopper shield (2) and the second hopper shield (4) gradually decreases as it extends from the second telescopic sleeve (502) to both sides.

9. A retractable hopper shield according to claim 1, characterized in that: A fixed bracket (16) connected to the upper rotating mechanism (1) or the lower rotating mechanism (3) is provided on the second telescopic sleeve (502) on both sides of the feed inlet (17).

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