Inclined conveying device for upper crown of runner of mixed flow machine

Abstract

The utility model discloses a mixed flow machine runner upper crown inclined transportation device which comprises a base, a fixing column is arranged on the base, a worm and gear assembly is arranged on the fixing column, a rotating shaft in the worm and gear assembly is connected with a connecting block, a supporting plate is arranged on the connecting block, and an upper crown fixing device is arranged on the supporting plate. The whole supporting plate is driven to rotate through cooperation of the worm gear and the worm, so that the crown fixed to the mounting block is driven to rotate together, the rotating angle is controllable, and through cooperation of the threaded rod and the clamping block, before the crown is fixed, the clamping block is located in the hidden groove and does not protrude out of the mounting block; when the upper crown is placed on the non-slip mat, the double-shaft motor drives the threaded rod to drive the clamping block to extend out of the hidden groove, the clamping block and the supporting plate clamp the upper crown in the middle, and therefore the upper crown is fixed.

Description

Technical Field

[0001] This utility model relates to the field of conveying, specifically to a mixed-flow machine runner with an inclined crown conveying device in the field of transport equipment. Background Technology

[0002] The upper crown of a mixed-flow turbine is a major load-bearing component. It is large in size and weight, making position adjustment difficult during transport. Furthermore, because the upper crown is generally conical, it is difficult to find a good anchor point on the outside to secure it during transport. Therefore, the upper crown is usually transported flat. However, the transport path may be narrow at the installation site, requiring the upper crown to be rotated to allow it to pass through a narrower area.

[0003] However, the existing technology lacks a small transport device capable of moving and rotating the upper crown, such as the "mixed-flow turbine runner turning device" disclosed in announcement number CN102303262A. In this patent, the rotation angle of the upper crown is not adjusted separately, but the entire runner of the turbine is turned over, and it is impossible to keep the runner stably at a certain angle during the turning process. Utility Model Content

[0004] The purpose of this invention is to provide a transport device for an upper crown, which can fix and transport the upper crown from the inside. Another purpose of this invention is to use the cooperation of a worm gear and a worm wheel to drive the rotation of the worm gear, thereby synchronously driving the rotation of the upper crown. The process is convenient and the structure is reliable. At the same time, the transport device is generally located inside the upper crown and has a small volume.

[0005] This utility model achieves the above-mentioned technical objectives through the following technical means.

[0006] A tilting conveying device for the crown of a mixing mill impeller includes a base, a fixed column on the base, a worm gear assembly on the fixed column, a shaft in the worm gear assembly connected to a connecting block, a support plate on the connecting block, and a crown fixing device on the support plate.

[0007] Furthermore, the lower end of the fixed column is solid, and a drive groove is provided at the upper end of the fixed column, with the worm gear assembly placed in the drive groove.

[0008] Preferably, the worm gear assembly includes a worm and a worm wheel, the worm being fixedly connected to the fixed post, and a drive motor being installed on the outside of the fixed post, the drive motor being drivenly connected to the worm.

[0009] Furthermore, a rotating shaft is provided through the rotation center of the worm gear, the worm gear is fixedly connected to the rotating shaft, and connecting blocks are provided on both sides of the worm gear, the connecting blocks being fixedly connected to the rotating shaft.

[0010] Furthermore, the upper part of the connecting block is fixedly connected to the support plate, and the assembly structure of the connecting block and the support plate is axially symmetrical.

[0011] Preferably, the upper crown fixing device is installed in the middle of the support plate, and an installation block is fixedly installed in the middle of the support plate, with an installation groove in the middle of the installation block.

[0012] Furthermore, a dual-axis motor is provided in the mounting slot, and hidden slots are provided in the mounting blocks on both sides of the dual-axis motor. Threaded rods are provided in the hidden slots and are connected to the dual-axis motor for transmission.

[0013] Furthermore, the threaded rod is provided with a locking block that engages with the threaded rod, the locking block cooperates with the hidden groove, and the length of the locking block is less than or equal to the length of the hidden groove.

[0014] Furthermore, on the support plate, a ring of anti-slip pads is provided around the upper crown fixing device.

[0015] Preferably, the outer side of the base is provided with a mounting plate, and the mounting plate is provided with through-hole mounting holes.

[0016] This utility model has the following beneficial effects:

[0017] The worm gear drives the support plate to rotate, which in turn drives the upper crown, which is fixed to the mounting block, to rotate as well. The rotation angle is controllable. The threaded rod and the locking block work together to ensure that the locking block is in the hidden groove before the upper crown is fixed and does not protrude from the mounting block. Therefore, the upper crown will not interfere with the locking block when placed on the anti-slip pad. When the upper crown is placed on the anti-slip pad, the dual-axis motor drives the threaded rod to extend the locking block from the hidden groove and clamp the upper crown in the middle together with the support plate, thus fixing the upper crown. Attached Figure Description

[0018] Fig. 1 This is a cross-sectional structural diagram of the transportation device and the upper crown of this utility model after assembly.

[0019] Fig. 2 This is a top view cross-sectional structural diagram of the worm gear position of this utility model.

[0020] In the diagram, 1-base, 2-fixed column, 3-worm gear, 4-drive slot, 5-rotating shaft, 6-worm wheel, 7-connecting block, 8-rotating wheel crown body, 9-mounting block, 10-inspection cover, 11-dual-axis motor, 12-mounting slot, 13-hidden slot, 14-clamping block, 15-threaded rod, 16-anti-slip pad, 17-support plate, 18-drive motor, 19-reinforcing block, 20-mounting plate, 21-mounting hole. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but the scope of protection of the present invention is not limited thereto.

[0022] Example 1:

[0023] like Figs. 1-2 As shown, a tilting conveying device for the crown of a mixed flow machine impeller includes a base 1, a fixed column 2 on the base 1, a worm gear assembly on the fixed column 2, a rotating shaft 5 in the worm gear assembly connected to the connecting block 7, a support plate 17 on the connecting block 7, and a crown fixing device on the support plate 17.

[0024] This utility model discloses a tilting transport device for the upper crown of a mixing mill impeller. This device can transport and fix the upper crown, and adjust the tilt angle of the upper crown as needed during the transport process.

[0025] The entire device is located on the base 1. Mounting plates 20 are designed to extend outward along the outer perimeter of the base 1. Mounting holes 21 are provided on these mounting plates 20, through which the device can be mounted on a mobile platform for movement with the device and the upper crown.

[0026] Extending vertically upwards from the center of the base 1 is a supporting fixed column 2. To ensure structural rigidity and load-bearing capacity, the lower part of the fixed column 2 is designed as a solid structure, effectively transferring the upper load to the base 1. A drive groove 4 is provided at the upper end of the fixed column 2. This drive groove 4 provides an installation position for the tilting drive mechanism. A reinforcing block 19 is also provided around the fixed column 2, connecting to both the fixed column 2 and the base 1, enhancing the supporting strength of the fixed column 2.

[0027] The tilting function of the support plate of the device is mainly achieved by the worm gear assembly placed in the drive groove 4. This assembly consists of the meshing between the worm 3 as the driving member and the worm wheel 6 as the driven member. Fig. 2 As shown, the worm gear 3 is arranged horizontally. The driving force comes from the drive motor 18 mounted on the outer wall of the fixed column 2. The drive motor 18 transmits its torque to the worm gear 3 through a transmission connection, such as a coupling.

[0028] The worm gear 6 meshes with the worm 3. A horizontal rotating shaft 5 is fixedly connected at the center hole of the worm gear 6, and this shaft 5 serves as the central axis of rotation for the entire inclined platform. The rotating shaft 5 rotates together with the worm gear 6. Therefore, the worm gear 6 and the rotating shaft 5 are generally connected by a key or by an interference fit between the center holes of the rotating shaft 5 and the worm gear 6 to achieve synchronous rotation of the rotating shaft 5 and the worm gear 6.

[0029] The purpose of using a worm gear to drive the rotation of the upper crown is twofold: first, the transmission ratio is large, because the mass of the upper crown is generally very large, reaching hundreds of kilograms or several tons. Directly using a motor to drive the rotation would require a large amount of motor power, while the worm gear, due to its large transmission ratio, can achieve a large output torque and precise angle control with a smaller motor power; second, the worm gear has a self-locking characteristic, that is, when the drive motor 18 stops supplying power, due to the meshing friction angle, the worm wheel 6 cannot drive the worm 3 in reverse, thus reliably locking the support plate 17 at any tilt angle, ensuring the stability of the upper crown body 8 during transportation, and preventing it from easily deviating from the current tilt angle.

[0030] Connecting blocks 7 are fixedly installed on both sides of the worm gear 6, located at both ends of the rotating shaft 5. The rotating shaft 5 and the connecting blocks 7 rotate together; therefore, the connecting blocks 7 and the rotating shaft 5 are generally keyed together, or an interference fit is made between the center holes of the rotating shaft 5 and the connecting blocks 7 to achieve synchronous rotation. A support plate 17 is installed on the connecting blocks 7. The connecting blocks 7 are symmetrically distributed on both sides of the worm gear 6, and an even number of connecting blocks 7 is generally chosen.

[0031] The support plate 17 is a platform that directly supports the crown body 8 of the rotating wheel. It forms an integral rigid rotational structure with the rotating shaft 5 through the connecting block 7. Therefore, any angular rotation of the rotating shaft 5 will directly translate into an equal angular tilt of the support plate 17 relative to the fixed column 2 and the base 1.

[0032] Considering that the turbine crown is typically large and heavy, a fixing mechanism for the turbine crown body 8 is provided on the support plate 17 to ensure its stable placement on the support plate 17 and to prevent slippage during tilting. A ring of anti-slip pads 16 is laid around the area on the support plate 17 where the crown is to be placed, particularly around the mounting block 9. This anti-slip pad 16 increases the static friction between the turbine crown body 8 and the support plate, limiting accidental slippage of the turbine crown body 8 due to tilting or vibration.

[0033] At the center of the support plate 17, an upper crown fixing device is provided for positioning and clamping the upper crown body 8 of the rotating wheel. The base of this device is a mounting block 9, which is firmly fixed to the center of the support plate 17. A mounting groove 12 is formed at the center of the mounting block 9 for mounting the dual-axis motor 11, the power source for clamping action. Above the mounting groove 12 is a switchable inspection cover 10, which is normally kept closed but can be opened for inspection when the dual-axis motor 11 malfunctions.

[0034] A dual-axis motor 11 is installed in the mounting slot 12. Two symmetrical hidden slots 13 are formed inside the mounting block 9 on both sides of the dual-axis motor 11. Threaded rods 15 are respectively installed inside the interior spaces of these two hidden slots 13. One end of each threaded rod 15 is connected to the dual-axis motor 11 via a coupling.

[0035] The threaded rod 15 engages with the locking block 14. The main body of the locking block 14 is located in the hidden groove 13, and the inner wall of the hidden groove 13 guides the locking block 14. The locking block 14 reciprocates linearly along the axis of the threaded rod 15. The design of the hidden groove 13 not only serves as a guide but also as a storage mechanism for the locking block 14. The length of the locking block 14 is less than or equal to the length of the hidden groove 13. Because the diameter of the internal platform of the crown body 8 on the rotating wheel matches the diameter of the mounting block 9, if the length of the locking block 14 is greater than the length of the hidden groove 13, the crown body 8 on the rotating wheel may not be able to be properly placed on the support plate 17. Therefore, the length of the locking block 14 needs to be less than or equal to the length of the hidden groove 13 to avoid the protrusion of the locking block 13 affecting the placement of the crown body 8 on the rotating wheel.

[0036] Example 2:

[0037] The structure of this embodiment is the same as that of Embodiment 1, and further describes how the device fixes the crown body on the rotating wheel.

[0038] like Figs. 1-2 As shown, a tilting conveying device for the crown of a mixed flow machine impeller includes a base 1, a fixed column 2 on the base 1, a worm gear assembly on the fixed column 2, a rotating shaft 5 in the worm gear assembly connected to the connecting block 7, a support plate 17 on the connecting block 7, and a crown fixing device on the support plate 17.

[0039] This utility model discloses a tilting transport device for the upper crown of a mixing mill impeller. This device can transport and fix the upper crown, and adjust the tilt angle of the upper crown as needed during the transport process.

[0040] The entire device is located on the base 1. Mounting plates 20 are designed to extend outward along the outer perimeter of the base 1. Mounting holes 21 are provided on these mounting plates 20, through which the device can be mounted on a mobile platform for movement with the device and the upper crown.

[0041] Extending vertically upwards from the center of the base 1 is a supporting fixed column 2. To ensure structural rigidity and load-bearing capacity, the lower part of the fixed column 2 is designed as a solid structure, effectively transferring the upper load to the base 1. A drive groove 4 is provided at the upper end of the fixed column 2. This drive groove 4 provides an installation position for the tilting drive mechanism.

[0042] The tilting function of the support plate of the device is mainly achieved by the worm gear assembly placed in the drive groove 4. This assembly consists of the meshing between the worm 3 as the driving member and the worm wheel 6 as the driven member. Fig. 2 As shown, the worm gear 3 is arranged horizontally. The driving force comes from the drive motor 18 mounted on the outer wall of the fixed column 2. The drive motor 18 transmits its torque to the worm gear 3 through a transmission connection, such as a coupling.

[0043] The worm gear 6 meshes with the worm 3. A horizontal rotating shaft 5 is fixedly connected at the center hole of the worm gear 6, and this shaft 5 serves as the central axis of rotation for the entire inclined platform. The rotating shaft 5 rotates together with the worm gear 6. Therefore, the worm gear 6 and the rotating shaft 5 are generally connected by a key or by an interference fit between the center holes of the rotating shaft 5 and the worm gear 6 to achieve synchronous rotation of the rotating shaft 5 and the worm gear 6.

[0044] The purpose of using a worm gear to drive the rotation of the upper crown is twofold: first, the transmission ratio is large, because the mass of the upper crown is generally very large, reaching hundreds of kilograms or several tons. Directly using a motor to drive the rotation would require a large amount of motor power, while the worm gear, due to its large transmission ratio, can achieve a large output torque and precise angle control with a smaller motor power; second, the worm gear has a self-locking characteristic, that is, when the drive motor 18 stops supplying power, due to the meshing friction angle, the worm wheel 6 cannot drive the worm 3 in reverse, thus reliably locking the support plate 17 at any tilt angle, ensuring the stability of the upper crown body 8 during transportation, and preventing it from easily deviating from the current tilt angle.

[0045] Connecting blocks 7 are fixedly installed on both sides of the worm gear 6, located at both ends of the rotating shaft 5. The rotating shaft 5 and the connecting blocks 7 rotate together; therefore, the connecting blocks 7 and the rotating shaft 5 are generally keyed together, or an interference fit is made between the center holes of the rotating shaft 5 and the connecting blocks 7 to achieve synchronous rotation. A support plate 17 is installed on the connecting blocks 7. The connecting blocks 7 are symmetrically distributed on both sides of the worm gear 6, and an even number of connecting blocks 7 is generally chosen.

[0046] The support plate 17 is a platform that directly supports the crown body 8 of the rotating wheel. It forms an integral rigid rotational structure with the rotating shaft 5 through the connecting block 7. Therefore, any angular rotation of the rotating shaft 5 will directly translate into an equal angular tilt of the support plate 17 relative to the fixed column 2 and the base 1.

[0047] Considering that the turbine crown is typically large and heavy, a fixing mechanism for the turbine crown body 8 is provided on the support plate 17 to ensure its stable placement on the support plate 17 and to prevent slippage during tilting. A ring of anti-slip pads 16 is laid around the area on the support plate 17 where the crown is to be placed, particularly around the mounting block 9. This anti-slip pad 16 increases the static friction between the turbine crown body 8 and the support plate, limiting accidental slippage of the turbine crown body 8 due to tilting or vibration.

[0048] At the center of the support plate 17, an upper crown fixing device is provided for positioning and clamping the upper crown body 8 of the rotating wheel. The base of this device is a mounting block 9, which is firmly fixed to the center of the support plate 17. A mounting groove 12 is formed at the center of the mounting block 9 for mounting the dual-axis motor 11, the power source for clamping action. Above the mounting groove 12 is a switchable inspection cover 10, which is normally kept closed but can be opened for inspection when the dual-axis motor 11 malfunctions.

[0049] A dual-axis motor 11 is installed in the mounting slot 12. Two symmetrical hidden slots 13 are formed inside the mounting block 9 on both sides of the dual-axis motor 11. Threaded rods 15 are respectively installed inside the interior spaces of these two hidden slots 13. One end of each threaded rod 15 is connected to the dual-axis motor 11 via a coupling.

[0050] The threaded rod 15 engages with the locking block 14. The main body of the locking block 14 is located in the hidden groove 13, and the inner wall of the hidden groove 13 guides the locking block 14. The locking block 14 reciprocates linearly along the axis of the threaded rod 15. The design of the hidden groove 13 not only serves as a guide but also as a storage mechanism for the locking block 14. The length of the locking block 14 is less than or equal to the length of the hidden groove 13. Because the diameter of the internal platform of the crown body 8 on the rotating wheel matches the diameter of the mounting block 9, if the length of the locking block 14 is greater than the length of the hidden groove 13, the crown body 8 on the rotating wheel may not be able to be properly placed on the support plate 17. Therefore, the length of the locking block 14 needs to be less than or equal to the length of the hidden groove 13 to avoid the protrusion of the locking block 14 affecting the placement of the crown body 8 on the rotating wheel.

[0051] First, start the drive motor 18 to adjust the support plate 17 to a horizontal position. Then, hoist the upper crown body 8 of the rotating wheel and place it on the support plate 17, so that the upper crown body 8 of the rotating wheel engages with the mounting block 9. Subsequently, start the dual-axis motor 11. Let the locking block 14 extend from the hidden groove 13, cover the upper crown body 8 of the rotating wheel, and together with the support plate 17, limit and fix the upper crown body 8 of the rotating wheel. After the upper crown is fixed, the drive motor 18 can be started as needed during transportation to control the support plate 17 and the upper crown it carries to tilt to a predetermined angle through the worm gear mechanism. When it is time to remove the upper crown body 8 of the rotating wheel from the installation position, rotate the support plate 17 back to a horizontal position, and then retract the locking block 14 into the hidden groove 13 to release the fixation of the upper crown body 8 of the rotating wheel. At this time, the upper crown body 8 of the rotating wheel can be removed from the transportation device.

Claims

1. A tilting conveying device for the crown of a mixed-flow machine impeller, characterized in that, Includes a base (1), on which a fixed column (2) is provided, and on which a worm gear assembly is provided, the rotating shaft (5) in the worm gear assembly is connected to a connecting block (7), and on which a support plate (17) is provided, and on which an upper crown fixing device is provided.

2. The inclined conveying device for the crown of a mixed-flow machine impeller according to claim 1, characterized in that, The lower end of the fixed column (2) is solid, and a drive groove (4) is provided at the upper end of the fixed column (2), and the worm gear assembly is placed in the drive groove (4).

3. The inclined conveying device for the crown of a mixed-flow machine impeller according to claim 1, characterized in that, The worm gear assembly includes a worm (3) and a worm wheel (6). The worm (3) is fixedly connected to the fixed post (2). A drive motor (18) is installed on the outside of the fixed post (2). The drive motor is connected to the worm (3) in a transmission manner.

4. The inclined conveying device for the crown of a mixed-flow machine impeller according to claim 3, characterized in that, A rotating shaft (5) is provided through the rotation center of the worm wheel (6), and the worm wheel (6) is fixedly connected to the rotating shaft (5). Connecting blocks (7) are provided on both sides of the worm wheel (6), and the connecting blocks (7) are fixedly connected to the rotating shaft (5).

5. A tilting conveyor device for the crown of a mixed-flow machine impeller according to claim 1, 2, 3, or 4, characterized in that, The upper part of the connecting block (7) is fixedly connected to the support plate (17), and the assembly structure of the connecting block (7) and the support plate (17) is axially symmetrical.

6. A tilting conveying device for the crown of a mixed-flow machine impeller according to claim 1, 2, 3, or 4, characterized in that, The upper crown fixing device is installed in the middle of the support plate (17), and the support plate (17) is fixedly installed with a mounting block (9) in the middle, and the mounting block (9) is provided with a mounting groove (12) in the middle.

7. The inclined conveying device for the crown of a mixed-flow machine impeller according to claim 6, characterized in that, The mounting slot (12) is provided with a dual-axis motor (11). On both sides of the dual-axis motor (11), the mounting block (9) is provided with a hidden slot (13). The hidden slot (13) is provided with a threaded rod (15) that is connected to the dual-axis motor (11) for transmission.

8. The inclined conveying device for the crown of a mixed-flow machine impeller according to claim 7, characterized in that, The threaded rod (15) is provided with a locking block (14) that engages with the threaded rod (15) threadedly. The locking block (14) cooperates with the hidden groove (13). The length of the locking block (14) is less than or equal to the length of the hidden groove (13).

9. A tilting conveying device for the crown of a mixed-flow machine impeller according to any one of claims 1, 2, 3, 4, 7, or 8, characterized in that, On the support plate (17), a ring of anti-slip pads (16) is provided around the upper crown fixing device.

10. A tilting conveying device for the crown of a mixed-flow machine impeller according to any one of claims 1, 2, 3, 4, 7, or 8, characterized in that, The base (1) is provided with a mounting plate (20) on its outer side, and the mounting plate (20) is provided with a through-hole mounting hole (21).

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