A slot under vibrating screen deck hoisting device

Abstract

The utility model relates to hoisting device technical field, especially to a kind of slot under vibrating screen screen plate hoisting device, including stand and hoisting mechanism, stand is set on the beam of vibrating screen, cavity is opened in the vertical direction in stand;Hoisting device further includes telescopic part and height adjusting mechanism;Telescopic part is slidably matched in cavity along vertical direction;Height adjusting mechanism is arranged between stand and telescopic part, for adjusting the extension height of telescopic part, the upper end of telescopic part is fixedly connected with the cantilever extending along horizontal direction, and the cantilever is fixedly connected with hook on bottom, hoisting mechanism is connected with hook, for hoisting the screen plate of vibrating screen.The hoisting device of the utility model aims at solving the technical problem that the lifting point height of existing hoisting device is invariable, leading to the lifting height of screen plate is limited and cannot be freely adjusted according to demand.

Description

Technical Field

[0001] This utility model relates to the field of lifting device technology, specifically to a lifting device for a vibrating screen plate under a trough. Background Technology

[0002] Raw materials used in blast furnace production, such as iron ore, coke, and limestone, must be screened by an under-trough vibrating screen before entering the furnace. Due to long-term operation, the screen plates of the under-trough vibrating screen are prone to wear and tooth loss, requiring frequent replacement. Current technology commonly uses hoisting devices to replace the screen plates.

[0003] For example, a lifting device for a vibrating screen plate under a trough is disclosed in the utility model patent with authorization publication number CN219708872U. Although the device can facilitate the installation and removal of the screen plate through hoisting, the height of the hoisting point of the device is fixed, which limits the lifting height of the screen plate and makes it impossible to adjust flexibly according to the needs of the site. Utility Model Content

[0004] In view of this, the present invention provides a lifting device for the screen plate of a vibrating screen under the trough, which aims to solve the technical problem that the lifting height of the screen plate is limited due to the constant lifting point height of the existing lifting device, and thus cannot be freely adjusted according to the needs.

[0005] To solve the above-mentioned technical problems, this utility model provides a lifting device for a vibrating screen plate under a trough, including a column and a lifting mechanism. The lifting mechanism is used to lift the screen plate and includes a telescopic component, a height adjustment mechanism, and a cantilever. The column is set on the crossbeam of the vibrating screen, and a cavity is vertically formed inside the column. The telescopic component slides vertically into the cavity. The height adjustment mechanism is set between the column and the telescopic component to adjust the extension height of the telescopic component. The cantilever is fixedly connected to the upper end of the telescopic component and extends horizontally. The lifting mechanism is installed at the end of the cantilever.

[0006] Furthermore, the height adjustment mechanism includes a movable frame, two baffles, two locking parts, and a power assembly; the movable frame is fixedly mounted on the outer wall of the telescopic member; the two baffles are symmetrically fixed on the outer wall of the column, and the distance between the two baffles forms a strip-shaped groove; the movable frame passes through the cavity and slides to fit the strip-shaped groove; each baffle has multiple positioning grooves arranged vertically in a linear array along its upper edge; the two locking parts are slidably disposed within the movable frame; the power assembly is disposed inside the movable frame; after the telescopic member rises or falls to a specified height, the power assembly can push the locking parts to slide backward to embed into the corresponding positioning groove, thereby fixing the height of the telescopic member.

[0007] Furthermore, the power assembly includes a drive block, two inclined guides, and a pushing component; the drive block is vertically slidably disposed at the center inside the movable frame; the two inclined guides are slidably engaged on both sides of the movable frame, and the two inclined guides are inclined from top to bottom towards the drive block; the locking component is fixedly disposed on the side of the inclined guides facing the positioning groove; the pushing component is disposed above the drive block, and the pushing component is used to push the drive block down to drive the two inclined guides to move in opposite directions, so that the locking component can be inserted into the positioning groove.

[0008] Furthermore, the pushing component includes a fixing block and an adjusting screw; the fixing block is fixedly disposed on the upper wall of the movable frame, and the fixing block has a threaded hole extending vertically through it and communicating with the movable frame; the adjusting screw is threadedly engaged with the threaded hole, and the lower end of the adjusting screw is rotatably connected to the driving block through a bearing.

[0009] Furthermore, the power assembly also includes a return spring, which is disposed between the two inclined guide portions, and both ends of the return spring are fixedly connected to the lower sidewalls of the two inclined guide portions respectively.

[0010] Furthermore, the column is detachably connected to the crossbeam via a fixing assembly.

[0011] Furthermore, the fixing assembly includes two clamping plates and a threaded locking member. The two clamping plates are respectively distributed on the upper and lower sides of the vibrating screen crossbeam. The two ends of the threaded locking member are respectively threaded into the two clamping plates. The column is vertically arranged on the upper clamping plate.

[0012] Furthermore, the number of threaded locking components is four, and the four threaded locking components are distributed in a rectangular array on the clamping plate.

[0013] Furthermore, it also includes a rotating component, the lower end of which is rotatably connected to the upper clamping plate via the rotating component, so that the column can rotate horizontally relative to the clamping plate.

[0014] Furthermore, the rotating component includes a pin and a bushing. The pin is fixedly connected vertically to the upper clamping plate, and the bushing is fixedly connected to the lower end of the column, and the bushing is rotatably fitted onto the pin.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: When using the lifting device of this utility model, the operator can move the telescopic component upward through the height adjustment mechanism, so that the telescopic component slides vertically upward along the cavity to adjust the height of the cantilever and the lifting mechanism, thereby adjusting the height at which the screen plate can be lifted. Thus, the lifting height of the screen plate is adjustable and unrestricted, and can be freely adjusted according to needs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the hoisting device of this utility model; Figure 2 This is a schematic diagram of the structure of the telescopic component and the column involved in the embodiment; Figure 3 For the purposes of this embodiment Figure 1 Enlarged schematic diagram of the structure at point A in the middle; Figure 4 For the purposes of this embodiment Figure 3 Cross-sectional view of the internal structure of the active frame; Figure 5 For the purposes of this embodiment Figure 4 Schematic diagram of the structure after the locking part disengages from the positioning groove.

[0017] Numbering in each attached figure: 100. Column; 101. Cavity; 102. Strip groove; 200. Telescopic component; 201. Cantilever; 202. Reinforcing rib; 300. Baffle; 301. Positioning groove; 400. Hook; 500. Crossbeam; 600. Movable frame; 601. Locking part; 602. Inclined guide part; 603. Drive block; 604. Fixing block; 605. Adjusting screw; 606. Spring; 700. Bushing; 701. Pin; 800. Clamping plate; 801. Threaded locking component. Detailed Implementation

[0018] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0019] In the description of this utility model, it should be understood that the terms "width", "upper", "lower", "front", "rear", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through other features. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] Please refer to Figures 1-5 This utility model provides a lifting device for the screen plate of a vibrating screen under a trough, including a column 100, a telescopic component 200, a height adjustment mechanism, a cantilever 201, and a lifting mechanism.

[0023] Specifically, the column 100 is vertically mounted on the crossbeam 500 of the vibrating screen, and a through cavity 101 is formed inside the column 100 along its vertical axis. The telescopic member 200 is vertically slidably fitted into the cavity 101.

[0024] The height adjustment mechanism is located between the column 100 and the telescopic member 200 to adjust the extension height of the telescopic member 200. The height adjustment mechanism can adjust the telescopic member 200 to different height positions in the cavity 101 as needed, thereby controlling its extension length.

[0025] The cantilever 201 is fixedly connected to the upper end of the telescopic member 200. The cantilever 201 extends horizontally from the top of the telescopic member 200, that is, towards the vibrating screen box. The cantilever 201 and the telescopic member 200 are integrally connected, and the angle between the cantilever 201 and the telescopic member 200 is provided with a reinforcing rib 202 to improve the overall strength.

[0026] The lifting mechanism (not shown) is mounted on the hook 400 at the end of the cantilever 201 away from the telescopic member 200. The lifting mechanism can be a manual chain hoist, which can suspend one end of the chain hoist onto the screen plate, thereby lifting the screen plate manually. In other embodiments, the lifting mechanism can also be an electric hoist commonly used in the existing hoisting field, which is not limited here.

[0027] The operator can use the height adjustment mechanism to move the telescopic component 200 upward, so that the telescopic component 200 slides vertically upward along the cavity 101 to adjust the height of the cantilever 201 and the lifting mechanism, thereby adjusting the height at which the screen plate can be lifted. This makes the lifting height of the screen plate adjustable and unrestricted, and can be freely adjusted according to needs.

[0028] Reference Figure 2 , Figure 3 and Figure 4 The height adjustment mechanism includes a movable frame 600, two baffles 300, two locking parts 601, and a power assembly.

[0029] Specifically, the movable frame 600 is detachably installed and fixed to the outer wall of the telescopic component 200 by screws.

[0030] On the outer wall of the column 100, a strip-shaped groove 102 communicating with the internal cavity 101 is formed along its axial direction (i.e., vertically). The movable frame 600 extends through this strip-shaped groove 102 to the outside of the column 100 and forms a sliding engagement with the strip-shaped groove 102, so that the movable frame 600 can move up and down along the strip-shaped groove 102 together with the telescopic member 200. Two baffles 300 are symmetrically fixed to the outer wall of the column 100 by welding and are located on both sides of the strip-shaped groove 102. Each baffle 300 has multiple positioning grooves 301 evenly arranged in a vertical linear array.

[0031] Two locking parts 601 are housed inside the movable frame 600 and can slide relative to each other within the movable frame 600. The two sides of the movable frame 600 are through-type structures, so that the locking parts 601 can pass through the side openings of the movable frame 600 to be embedded in the positioning grooves 301.

[0032] The power unit is also located inside the movable frame 600. When the telescopic member 200 rises or falls to a specified height, the power unit can push the locking part 601 to slide backward, so that the locking part 601 passes through the side opening of the movable frame 600 and is embedded in the corresponding positioning groove 301 to fix the height of the telescopic member 200.

[0033] When the lifting height needs to be increased, the telescopic member 200 is pulled up to the appropriate height. The operator can then drive the two locking parts 601 to move in opposite directions via the power component, so that their ends are securely embedded in the corresponding positioning grooves 301 on the side baffles 300, thereby locking the relative position of the telescopic member 200 and the column 100 and fixing its height. In other embodiments, the height adjustment mechanism can be a commonly used, automatically controlled lifting device, such as a hydraulic cylinder or a pneumatic cylinder, which is not limited here.

[0034] Reference Figure 4 and Figure 5 The power assembly includes a drive block 603, two tilting guides 602, and a pusher.

[0035] Specifically, the drive block 603 is located at the center inside the movable frame 600, and the drive block 603 can only slide in the vertical direction. The two sides of the drive block 603 are provided with inclined surfaces that slope from top to bottom away from the baffle 300.

[0036] Two inclined guide parts 602 are slidably engaged in the movable frame 600 and located on both sides of the drive block 603. The two inclined guide parts 602 are inclined from top to bottom towards the drive block 603. The locking part 601 is fixedly disposed on the side of the corresponding inclined guide part 602 facing the positioning groove 301. The cross-sectional dimensions of the openings on both sides of the movable frame 600 are smaller than the dimensions of the inclined guide parts 602 and larger than the dimensions of the locking part 601, so that only the locking part 601 can pass through the opening of the movable frame 600 and the inclined guide parts 602 cannot be disengaged from the movable frame 600.

[0037] The pushing component is positioned above the drive block 603. The pushing component is used to push the drive block 603 down to drive the two inclined guides 602 to move backward along the movable frame 600, so that the locking part 601 is engaged in the positioning groove 301.

[0038] When the telescopic member 200 is adjusted to the appropriate height and the locking part 601 is aligned with the positioning groove 301, the operator controls the pushing part to press the drive block 603 downward. As the drive block 603 descends, its inclined surfaces on both sides contact the two inclined guide parts 602 and generate an interaction force. This force is decomposed into a horizontal component, which pushes the two inclined guide parts 602 and the locking part 601 to move in opposite directions within the movable frame 600, thereby allowing the locking part 601 to be precisely embedded in the positioning groove 301 of the side baffles 300.

[0039] Reference Figure 4 and Figure 5 The driving component includes a fixed block 604 and an adjusting screw 605.

[0040] Specifically, the fixing block 604 is fixedly mounted on the upper wall of the movable frame 600. The fixing block 604 has a threaded hole extending vertically through it, and the threaded hole communicates with the interior of the movable frame 600.

[0041] The adjusting screw 605 is threaded into this threaded hole, and its lower end is rotatably connected to the center of the upper surface of the drive block 603 via a bearing. The outer ring of the bearing is fixed to the center of the upper surface of the drive block 603, and the lower end of the adjusting screw 605 is also fixedly connected to the inner ring of the bearing. This bearing ensures that there is no mechanical interference between the lower end of the adjusting screw 605 and the drive block 603 when the screw rotates.

[0042] When the operator turns the adjusting screw 605, due to the threaded engagement between the adjusting screw 605 and the threaded hole, the adjusting screw 605 will rise or fall relative to the fixed block 604, thereby driving the drive block 603 to move precisely vertically, and further pushing the two inclined guide parts 602 to move in opposite directions. In other embodiments, the pushing component can also be a telescopic structure that is commonly used in the prior art and can be automatically controlled, such as an electric telescopic push rod, which is not limited here.

[0043] Reference Figure 4 and Figure 5 The power assembly also includes a return spring 606. There are two return springs 606, which are spaced apart between the two inclined guides 602. The two ends of the return springs 606 are fixedly connected to the opposing lower sidewalls of the two inclined guides 602 respectively.

[0044] When the locking part 601 is not in the positioning groove 301, the return spring 606 is in a naturally contracted state, applying a pulling force to the two tilting guides 602 in opposite directions, so that when the drive block 603 is not lowered, the two tilting guides 602 are located in the movable frame 600 near the center.

[0045] When the drive block 603 moves downward to drive the two inclined guides 602 away from each other, the return spring 606 is stretched until the locking part 601 is inserted into the positioning groove 301. At this point, the drive block 603 stops moving, keeping the return spring 606 stretched. When the reverse adjusting screw 605 raises the drive block 603, the compressed return spring 606 gradually contracts and returns to its original position, pulling the two inclined guides 602 towards each other. This allows the locking part 601 to smoothly exit the positioning groove 301, thus achieving fast and automatic unlocking.

[0046] It is worth mentioning that the transmission of the adjusting screw 605 has a self-locking characteristic. When the screw is rotated without external force, the position of the drive block 603 can be automatically maintained. In addition, the rebound force of the reset spring 606 in this embodiment is insufficient to cause the adjusting screw 605 to reverse uncontrollably, thereby avoiding accidental loosening of the locking mechanism and ensuring high safety and reliability.

[0047] Reference Figure 1 The column 100 is detachably connected to the crossbeam 500 via a fixing component. This fixing component serves as the connection point between the column 100 and the vibrating screen crossbeam 500, allowing the column 100 to be removed from the crossbeam 500 and reinstalled at other positions on the crossbeam 500. This makes the overall position of the lifting device adjustable, facilitating future maintenance.

[0048] Reference Figure 1 The fixing assembly includes two clamping plates 800 and a threaded locking element 801.

[0049] Specifically, two clamping plates 800 are distributed on the upper and lower sides of the vibrating screen beam 500, respectively, and the two ends of the threaded locking member 801 are threadedly engaged with the two clamping plates 800; wherein, the surfaces of the two clamping plates 800 are vertically perforated, and the perforations between the two clamping plates 800 are coaxially corresponding, and the two ends of the threaded locking member 801 are respectively inserted into the corresponding perforations, and both ends of the threaded locking member 801 are threadedly engaged with nuts; When installation is required, the clamping plate 800 connected to the column 100 is placed on the upper side of the crossbeam 500, and the other clamping plate 800 is placed on the lower side of the crossbeam 500. The position of the lower clamping plate 800 is then adjusted so that the threaded hole on its surface aligns coaxially with the threaded hole of the upper clamping plate 800. The threaded locking member 801 is then passed through the corresponding threaded holes of the two clamping plates 800 in sequence, and the nuts are screwed onto both ends of the threaded locking member 801. The two nuts tighten the two clamping plates 800, thereby fixing the position of the column 100. Conversely, when the nuts are unscrewed from the threaded locking member 801 and the threaded locking member 801 is pulled out of the threaded hole, the two clamping plates 800 can be separated, thus achieving the disassembly of the column 100 from the crossbeam 500.

[0050] Reference Figure 1 There are four threaded locking parts 801, which are arranged in a rectangular array on the clamping plate 800. This arrangement ensures that the clamping plate 800 covers the four corner areas when it is tightened, which greatly enhances the integrity and stability of the connection between the clamping plate 800 and the crossbeam 500. It can effectively prevent the device from shaking or deflecting when it is under load or subjected to lateral force, and significantly improve the working rigidity and safety factor of the entire hoisting system.

[0051] Reference Figure 1The fixing assembly also includes a rotating component. The lower end of the column 100 is rotatably connected to the upper clamping plate 800 through the rotating component. The rotating component allows the column 100 to rotate horizontally relative to the clamping plate 800 with its own vertical axis as the center of rotation.

[0052] The rotating components enable the lifting device to rotate horizontally. After the screen plate is lifted, the operator can rotate the column 100, which in turn drives the cantilever 201 and the lifting mechanism to rotate, thus easily moving the screen plate into or out of the vibrating screen. This allows for free adjustment in the horizontal plane, greatly simplifying the alignment and installation process and saving manpower and operating time.

[0053] Reference Figure 1 The rotating component includes a pin 701 and a bushing 700. The pin 701 is welded and fixed to the surface of the upper clamping plate 800 in the vertical direction. The bushing 700 is fixedly connected to the lower end of the column 100 and is coaxial with the column 100. The bushing 700 is rotatably sleeved on the pin 701. The pin 701 serves as the fixed core, and the bushing 700 serves as the rotating external component, realizing the relative rotation of the column 100 and the bushing 700 around the same axis.

[0054] In summary, the working principle of this utility model is as follows: The operator first lifts the telescopic component 200 according to the lifting height required for this screen plate replacement. At this time, the movable frame 600 fixed on the telescopic component 200 slides along the strip groove 102 on the column 100, which drives the entire telescopic component 200 to rise and fall smoothly in the cavity 101 of the column 100.

[0055] Until the telescopic component 200 moves the cantilever 201 and the lifting mechanism to a suitable height, aligning the locking part 601 with the corresponding positioning groove 301 on the baffle 300, the adjusting screw 605 is turned. The adjusting screw 605 screws into the threaded hole of the fixing block 604, generating a downward linear displacement. The lower end of the adjusting screw 605 pushes the drive block 603 downward. The inclined surfaces on both sides of the drive block 603 contact the inclined surfaces on the two inclined guide parts 602, converting the downward thrust into a horizontal component force, forcing the two inclined guide parts 602 to slide backwards with the locking part 601. During this process, the return spring 606 is stretched by the mutually distancing inclined guide parts 602 until the two locking parts 601 are embedded in the positioning grooves 301 of the baffles on both sides to complete the height adjustment. This allows the lifting point height of the screen plate to be adjustable, making the lifting height of the screen plate unrestricted and freely adjustable according to needs.

[0056] It should be noted that the lifting mechanism is a conventional technical means in the existing hoisting field, and will not be elaborated on here.

[0057] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A lifting device for a screen plate of a vibrating screen under a trough, comprising a column and a lifting mechanism, wherein the column is mounted on the crossbeam of the vibrating screen, characterized in that: The column has a vertical cavity inside; the lifting device also includes a telescopic component and a height adjustment mechanism; the telescopic component slides vertically into the cavity; the height adjustment mechanism is located between the column and the telescopic component to adjust the extension height of the telescopic component; the upper end of the telescopic component is fixedly connected to a cantilever extending horizontally; a hook is fixedly installed at the bottom of the cantilever; the lifting mechanism is connected to the hook for lifting the screen plate of the vibrating screen.

2. The screen plate lifting device for a vibrating screen under a trough as described in claim 1, characterized in that: The height adjustment mechanism includes a movable frame, two baffles, two locking parts, and a power assembly; The movable frame is fixedly installed on the outer wall of the telescopic component; Two baffles are symmetrically fixed to the outer wall of the column, and a strip groove is formed between the two baffles. The movable frame passes through the cavity and slides and adapts to the strip groove. Multiple positioning grooves are arranged vertically in a linear array on each baffle. The two locking parts are slidably disposed within the movable frame; The power assembly is located inside the movable frame. After the telescopic member rises or falls to a specified height, the power assembly can push the locking part to slide backward to embed into the corresponding positioning groove, thereby fixing the height of the telescopic member.

3. The screen plate lifting device for a vibrating screen under a trough as described in claim 2, characterized in that: The power assembly includes a drive block, two tilting guides, and a pushing component; The driving block is vertically slidably disposed at the center inside the active frame; The two inclined guides are slidably engaged on both sides of the movable frame, and the two inclined guides are inclined from top to bottom toward the drive block. The locking part is fixedly disposed on the side of the inclined guide facing the positioning groove. The pushing component is positioned above the drive block. The pushing component is used to push the drive block down, causing the two inclined guides to move in opposite directions, so that the locking part can be inserted into the positioning groove.

4. The screen plate lifting device for a vibrating screen under a trough as described in claim 3, characterized in that: The pushing component includes a fixing block and an adjusting screw; The fixing block is fixedly installed on the upper wall of the movable frame, and the fixing block has a threaded hole that extends vertically through to the movable frame; The adjusting screw is threaded into the threaded hole, and the lower end of the adjusting screw is rotatably connected to the drive block via a bearing.

5. The lifting device for the screen plate of a vibrating screen under a trough as described in claim 3, characterized in that: The power assembly also includes a return spring, which is disposed between the two inclined guide portions, and both ends of the return spring are fixedly connected to the lower sidewalls of the two inclined guide portions respectively.

6. The screen plate lifting device for a vibrating screen under a trough as described in claim 1, characterized in that: The column is detachably connected to the crossbeam via a fixing component.

7. The lifting device for the screen plate of a vibrating screen under a trough as described in claim 6, characterized in that: The fixing assembly includes two clamping plates and a threaded locking component. The two clamping plates are respectively distributed on the upper and lower sides of the vibrating screen crossbeam. The two ends of the threaded locking component are threadedly engaged with the two clamping plates respectively. The column is vertically arranged on the upper clamping plate.

8. The screen plate lifting device for a vibrating screen under a trough as described in claim 7, characterized in that: The number of threaded locking components is four, and the four threaded locking components are distributed in a rectangular array on the clamping plate.

9. The screen plate lifting device for a vibrating screen under a trough as described in claim 7, characterized in that: The fixing assembly also includes a rotating component, and the lower end of the column is rotatably connected to the upper clamping plate through the rotating component, so that the column can rotate horizontally relative to the clamping plate.

10. The screen plate lifting device for a vibrating screen under a trough as described in claim 9, characterized in that: The rotating component includes a pin and a bushing. The pin is fixedly connected vertically to the upper clamping plate, and the bushing is fixedly connected to the lower end of the column, and the bushing is rotatably fitted onto the pin.

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