Lifting device for material raking machine of clarifying tank

Abstract

A driving mechanism of the lifting device comprises a main driving speed reducer, an upper driving support, a torque limiting mechanism and a lower driving support, a main driving shaft is arranged in the lower driving support, the main driving shaft is connected with the main driving speed reducer through a coupler, and a main driving gear is assembled at the lower end of the main driving shaft; the transmission mechanism comprises a transmission support and a rotary support in the transmission support, the rotary support is engaged and assembled with the main driving gear, a sleeve is assembled in the rotary support, and a shaft barrel is arranged in the sleeve; the lifting mechanism comprises an upper lifting support, a lifting box and a lower lifting support, a nut is arranged at the upper end of the upper lifting support, a main lifting gear and an auxiliary lifting gear are arranged in the lifting box, a lead screw is arranged in the lower lifting support, a shaft sleeve is assembled in the middle of the lead screw and connected with the auxiliary lifting gear, the lower end of the lead screw is connected with a shaft barrel, and the upper end of the lead screw is assembled with the nut in a threaded mode. The device is convenient to disassemble, assemble and maintain by arranging the detachable movable limiting sleeve and the flange, and is provided with the oil cup for automatically oiling and lubricating, so that the mechanical wear and the maintenance frequency are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of rake machines, and in particular to a lifting device for a clarifier rake machine. Background Art

[0002] The raw syngas produced by coal gasification has a high dust content and must be washed before it can be supplied to downstream devices, producing washing water with a high solid content. After a series of treatments, the washing water enters the clarification tank and settles under the action of flocculants. The clarified supernatant overflows into the circulating water tank and finally enters the coal gasification water system for reuse.

[0003] The solids produced by sedimentation in the clarifier need to be cleaned up by a rake. Because the rotating rake is subjected to abnormal impact and disturbance by the materials in the clarifier, the radial swing and vibration of the shaft barrel are too large, exceeding the load that the lifting bearing and the self-aligning bearing can bear. The bearing at the shaft barrel is prone to overload and wear failure, which in turn causes damage to the lead screw, sleeve and bearing pressure plate. In addition, the inconvenience of oiling and changing the bearing leads to a lack of good lubrication in the bearing chamber at the bottom of the lead screw, resulting in wear of the bearing chamber, spacer ring and pressure plate, thus affecting the clearance of the bearing, causing the bearing to overload and accelerate wear. Therefore, long-term swinging is also likely to cause damage to the drive gear set and the lifting gear set.

[0004] However, during the maintenance of the clarifier rake site, there is a problem of difficulty in disassembling and assembling the lifting device. The lifting device cannot be normally disassembled and assembled without removing the main gear of the transmission box. The workload of disassembling and assembling the transmission box is large, resulting in a long maintenance cycle and low efficiency, which seriously affects the production progress.

[0005] Therefore, it is urgent to propose a lifting device for a clarifier rake machine to solve the above problems. Summary of the invention

[0006] The technical problem to be solved by the utility model is to provide a lifting device for a clarifier raking machine, which can improve equipment lubrication, reduce mechanical wear, and facilitate disassembly, assembly and maintenance.

[0007] The utility model provides a lifting device for a clarifier raking machine, comprising a driving mechanism, a transmission mechanism and a lifting mechanism, wherein:

[0008] The driving mechanism comprises an upper driving support, a torque limiting mechanism and a lower driving support connected in sequence from top to bottom, a main driving reducer is arranged on the upper side of the upper driving support, a coupling is arranged inside the upper driving support, a main driving shaft is arranged inside the lower driving support, a driving bearing assembly is arranged between the main driving shaft and the lower driving support, the upper end of the coupling is connected to the main driving reducer, and the lower end thereof is connected to the main driving shaft, and the lower end of the main driving shaft is equipped with a main driving gear;

[0009] The transmission mechanism comprises a transmission support, a slewing support is arranged in the transmission support, the slewing support is meshed and matched with the main driving gear, a sleeve is arranged in the slewing support, a shaft cylinder is arranged in the sleeve, a shaft cylinder column is arranged at the upper end of the shaft cylinder, and a transmission bearing assembly and a self-aligning ball bearing assembly are arranged in the shaft cylinder column;

[0010] The lifting mechanism includes an upper lifting support, a lifting box and a lower lifting support which are connected in sequence from top to bottom. A nut is provided at the upper end of the upper lifting support, and the lower end of the lower lifting support is connected to the transmission support. A main lifting gear and a secondary lifting gear are provided in the lifting box. The main lifting gear and the secondary lifting gear are meshed and fitted. The main lifting gear is connected to the power output end of the lifting reducer. A lead screw is provided in the lower lifting support, and a sleeve is provided in the middle of the lead screw. The sleeve is connected to the secondary lifting gear, and the sleeve is fitted to the lifting box through a lifting bearing. The lower end of the lead screw is fitted to a transmission bearing assembly and a self-aligning ball bearing assembly, and its upper end is threaded with the nut.

[0011] Preferably, sealing covers are respectively provided at the upper and lower ends of the driving bearing assembly, and an inclined oil cup is provided on the upper sealing cover.

[0012] Preferably, drive pins are respectively installed between the main drive shaft, the main drive gear and the coupling.

[0013] Preferably, a bearing cover is provided on the shaft cylinder column, and a transmission oil cup is provided on the bearing cover.

[0014] Preferably, a flange is provided at the lower end of the shaft cylinder.

[0015] Preferably, it also includes a base, and the lower driving support and the transmission support are installed on the base.

[0016] Preferably, transmission pins are respectively arranged between the shaft sleeve and the lead screw and the auxiliary lifting gear.

[0017] Preferably, the upper end of the upper lifting support is provided with a nut and a lubricating oil pipe is respectively provided on the nut.

[0018] Preferably, it further comprises a limiting mechanism, wherein the limiting mechanism comprises a cover shell, a limiter is arranged inside the cover shell, and a top plate is arranged on the top of the lead screw.

[0019] Preferably, a pointer is provided on one side of the top plate, a scale, a pressure plate and a window plate are provided on one side of the cover shell, and a limit switch protection cover is provided on the other side.

[0020] Working principle of the utility model: the main driving reducer of the clarification tank rake material lifting device of the utility model is connected with the driving device, and the main driving shaft is driven to rotate through the coupling, thereby driving the main driving gear to rotate, and the main driving gear drives the slewing support to rotate through meshing, and the slewing support drives the sleeve and the shaft cylinder to rotate. The lower end of the flange is connected to the rake material mechanism to process the solid materials precipitated in the clarification tank. After the rake material processing is completed, the rake material mechanism needs to be lifted upward to carry out the next sedimentation cycle. At this time, the lifting reducer of the lifting mechanism works under the drive of the driving device, driving the main lifting gear to rotate, and the main lifting gear drives the auxiliary lifting gear to rotate through meshing, thereby driving the shaft sleeve and the lead screw to rotate. The lead screw moves upward in the nut at the same time. The shaft cylinder and the sleeve are connected by a guide groove and a guide block, so they can rotate synchronously and slide up and down relatively. Therefore, the lead screw can drive the shaft cylinder to move upward and lift the rake material mechanism upward. When rake material processing is required, the reverse rotation causes the rake material mechanism to descend.

[0021] Beneficial effects of the utility model: The lifting device of the clarifier raker of the utility model is provided with a detachable movable limit sleeve on the shaft cylinder, and the lower part of the shaft cylinder is connected with a flange. When installing, after the shaft cylinder is inserted into the transmission box, the limit sleeve is first installed from the bottom, and then the connecting flange is installed. When repairing and disassembling, only the flange needs to be disassembled, and other structures can be disassembled and replaced, which is convenient for disassembly and maintenance. In addition, by arranging oil cups on the sealing cover and the bearing gland, automatic oiling and lubrication are performed, which reduces the mechanical wear of the equipment and reduces the maintenance frequency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural schematic diagram of a lifting device for a clarifier rake machine of the utility model;

[0023] Figure 2 for Figure 1 A schematic diagram of the structure of the middle driving mechanism;

[0024] Figure 3 for Figure 1 The structural diagram of the transmission mechanism;

[0025] Figure 4 for Figure 1 Schematic diagram of the structure of the lifting mechanism and the limiting mechanism.

[0026] In the figure:

[0027] Driving mechanism 1, upper driving support 101, torque limiting mechanism 102, lower driving support 103, main driving reducer 104, coupling 105, main driving shaft 106, driving bearing assembly 107, main driving gear 108, sealing cover 109, oblique oil cup 110, driving pin 111;

[0028] Transmission mechanism 2, transmission support 201, slewing support 202, sleeve 203, shaft cylinder 204, shaft cylinder column 205, transmission bearing assembly 206, self-aligning ball bearing assembly 207, bearing gland 208, transmission oil cup 209, flange 210, base 211;

[0029] Lifting mechanism 3, upper lifting support 301, lifting box 302, lower lifting support 303, nut 304, main lifting gear 305, auxiliary lifting gear 306, lifting reducer 307, lead screw 308, sleeve 309, lifting bearing 310, transmission pin 311, lubricating oil pipe 312;

[0030] Limiting mechanism 4, cover 401, limiter 402, top plate 403, pointer 404, scale 405, pressure plate 406, window plate 407, limit switch protection cover 408. DETAILED DESCRIPTION

[0031] In order to make the technical solution of the present utility model easier to understand, the technical solution of the present utility model is now clearly and completely described in the form of specific embodiments in combination with the accompanying drawings.

[0032] Embodiment 1:

[0033] like Figures 1 to 4 As shown, the lifting device of the clarifier rake machine of this embodiment includes a driving mechanism 1, a transmission mechanism 2 and a lifting mechanism 3, wherein:

[0034] The driving mechanism 1 includes an upper driving support 101, a torque limiting mechanism 102 and a lower driving support 103 which are connected in sequence from top to bottom. A main driving reducer 104 is provided on the upper side of the upper driving support 101, and a coupling 105 is provided inside the upper driving support 101. A main driving shaft 106 is provided inside the lower driving support 103, and a driving bearing assembly 107 is installed between the main driving shaft 106 and the lower driving support 103. The upper end of the coupling 105 is connected to the main driving reducer 104, and the lower end thereof is connected to the main driving shaft 106. The lower end of the main driving shaft 106 is equipped with a main driving gear 108.

[0035] The transmission mechanism 2 includes a transmission support 201, in which a slewing support 202 is arranged. The slewing support 202 is meshed and assembled with the main driving gear 108. A sleeve 203 is arranged in the slewing support 202. A shaft cylinder 204 is arranged in the sleeve 203. A shaft cylinder column 205 is arranged at the upper end of the shaft cylinder 204. A transmission bearing assembly 206 and a self-aligning ball bearing assembly 207 are arranged in the shaft cylinder column 205.

[0036] The lifting mechanism 3 includes an upper lifting support 301, a lifting box 302 and a lower lifting support 303 connected in sequence from top to bottom. The upper end of the upper lifting support 301 is provided with a nut 304, and the lower end of the lower lifting support 303 is connected to the transmission support 201. A main lifting gear 305 and a secondary lifting gear 306 are provided in the lifting box 302. The main lifting gear 305 and the secondary lifting gear 306 are meshed and fitted. The main lifting gear 305 is connected to the power output end of the lifting reducer 307. A lead screw 308 is provided in the lower lifting support 303. A shaft sleeve 309 is provided in the middle of the lead screw 308. The shaft sleeve 309 is connected to the secondary lifting gear 306, and the shaft sleeve 309 is fitted with the lifting box 302 through a lifting bearing 310. The lower end of the lead screw 308 is fitted with the transmission bearing assembly 206 and the self-aligning ball bearing assembly 207, and its upper end is threadedly fitted with the nut 304.

[0037] Embodiment 2:

[0038] like Figures 1 to 4 As shown, a lifting device for a clarifier rake machine of this embodiment includes a driving mechanism 1, a transmission mechanism 2, a lifting mechanism 3 and a limiting mechanism 4, wherein:

[0039] The driving mechanism 1 includes an upper driving support 101, a torque limiting mechanism 102 and a lower driving support 103 which are connected in sequence from top to bottom. A main driving reducer 104 is provided on the upper side of the upper driving support 101, and a coupling 105 is provided inside the upper driving support. A main driving shaft 106 is provided inside the lower driving support 103, and a driving bearing assembly 107 is arranged between the main driving shaft 106 and the lower driving support 103. The upper end of the coupling 105 is connected to the main driving reducer 104, and the lower end thereof is connected to the main driving shaft 106. A main driving gear 108 is arranged at the lower end of the main driving shaft 106; sealing covers 109 are provided at the upper and lower ends of the driving bearing assembly 107, and an oblique oil cup 110 is provided on the sealing cover 109 located at the top; driving pins 111 are respectively arranged between the main driving shaft 106 and the main driving gear 108 and the coupling 105.

[0040] The transmission mechanism 2 includes a transmission support 201, a slewing support 202 is arranged inside the transmission support 201, the slewing support 202 is meshed and assembled with the main driving gear 108, a sleeve 203 is arranged inside the slewing support 202, a shaft cylinder 204 is arranged inside the sleeve 203, a shaft cylinder column 205 is arranged at the upper end of the shaft cylinder 204, a transmission bearing assembly 206 and a self-aligning ball bearing assembly 207 are arranged inside the shaft cylinder column 205; a bearing pressure cover 208 is arranged on the shaft cylinder column 205, and a transmission oil cup 209 is arranged on the bearing pressure cover; a flange 210 is arranged at the lower end of the shaft cylinder 204; and a base 211 is also included, and the lower driving support 103 and the transmission support 201 are installed on the base 211.

[0041] The lifting mechanism 3 includes an upper lifting support 301, a lifting box 302 and a lower lifting support 303 which are connected in sequence from top to bottom. A nut 304 is provided at the upper end of the upper lifting support 301, and the lower end of the lower lifting support 303 is connected to the transmission support 201. A main lifting gear 305 and a secondary lifting gear 306 are provided in the lifting box 302. The main lifting gear 305 and the secondary lifting gear 306 are meshed and matched. The main lifting gear 305 is connected to the power output end of the lifting reducer 307. A lead screw 304 is provided in the lower lifting support 303. 08, a shaft sleeve 309 is installed in the middle of the lead screw 308, the shaft sleeve 309 is connected to the auxiliary lifting gear 306, and the shaft sleeve 309 is installed with the lifting box 302 through the lifting bearing 310, the lower end of the lead screw 308 is installed with the transmission bearing assembly 206 and the self-aligning ball bearing assembly 207, and the upper end is threadedly installed with the nut 304; the transmission pin 311 is respectively installed between the shaft sleeve 309 and the lead screw 308 and the auxiliary lifting gear 306; the upper end of the upper lifting support 301 is provided with a nut 304 and a lubricating oil pipe 312 is respectively provided on it.

[0042] The limit mechanism 4 includes a cover 401, a limiter 402 is arranged inside the cover 401, and a top plate 403 is arranged on the top of the screw 308; a pointer 404 is arranged on one side of the top plate 403, a scale 405, a pressure plate 406 and a window plate 407 are arranged on one side of the cover 401, and a limit switch protection cover 408 is arranged on the other side.

[0043] It should be noted that the embodiments described herein are only partial embodiments of the present invention, rather than all implementations of the present invention, and the embodiments are only exemplary, and their role is only to provide a more intuitive and clear way to understand the content of the present invention, rather than to limit the technical solutions described in the present invention. Without departing from the concept of the present invention, all other implementation methods that ordinary technicians in the field can think of without creative work, and other simple replacements and various changes to the technical solutions of the present invention, all belong to the protection scope of the present invention.

Claims

1. A clarifier rake lifting device, characterized in that: It comprises a driving mechanism (1), a transmission mechanism (2) and a lifting mechanism (3), wherein: The driving mechanism (1) comprises an upper driving support (101), a torque limiting mechanism (102) and a lower driving support (103) connected in sequence from top to bottom; a main driving reducer (104) is arranged on the upper side of the upper driving support (101), and a coupling (105) is arranged inside the upper driving support; a main driving shaft (106) is arranged inside the lower driving support (103); a driving bearing assembly (107) is arranged between the main driving shaft (106) and the lower driving support (103); the upper end of the coupling (105) is connected to the main driving reducer (104), and the lower end thereof is connected to the main driving shaft (106); and the lower end of the main driving shaft (106) is equipped with a main driving gear (108); The transmission mechanism (2) comprises a transmission support (201), a slewing support (202) is arranged inside the transmission support (201), the slewing support (202) is meshed and assembled with a main driving gear (108), a sleeve (203) is arranged inside the slewing support (202), a shaft cylinder (204) is arranged inside the sleeve (203), a shaft cylinder column (205) is arranged at the upper end of the shaft cylinder (204), and a transmission bearing assembly (206) and a self-aligning ball bearing assembly (207) are arranged inside the shaft cylinder column (205); The lifting mechanism (3) comprises an upper lifting support (301), a lifting box (302) and a lower lifting support (303) which are connected in sequence from top to bottom. A nut (304) is provided at the upper end of the upper lifting support (301). The lower end of the lower lifting support (303) is connected to a transmission support (201). A main lifting gear (305) and a secondary lifting gear (306) are provided in the lifting box (302). The main lifting gear (305) and the secondary lifting gear (306) are meshed and assembled. 05) is connected to the power output end of the lifting reducer (307), a lead screw (308) is arranged in the lower lifting support (303), a shaft sleeve (309) is installed in the middle of the lead screw (308), the shaft sleeve (309) is connected to the auxiliary lifting gear (306), and the shaft sleeve (309) is installed with the lifting box (302) through the lifting bearing (310), the lower end of the lead screw (308) is installed with the transmission bearing assembly (206) and the self-aligning ball bearing assembly (207), and the upper end is threadedly installed with the nut (304).

2. The clarifier raker lifting device according to claim 1, characterized in that: The driving bearing assembly (107) is provided with sealing covers (109) at the upper and lower ends respectively, and an inclined oil cup (110) is provided on the sealing cover (109) located at the upper end.

3. The clarifier raker lifting device according to claim 1, characterized in that: A driving pin (111) is respectively installed between the main driving shaft (106), the main driving gear (108) and the coupling (105).

4. The clarifier raker lifting device according to claim 1, characterized in that: The shaft cylinder column (205) is provided with a bearing pressure cover (208), and the bearing pressure cover is provided with a transmission oil cup (209).

5. The clarifier raker lifting device according to claim 1, characterized in that: A flange (210) is provided at the lower end of the shaft cylinder (204).

6. The clarifier rake lifting device according to claim 1, characterized in that: It also includes a base (211), on which the lower driving support (103) and the transmission support (201) are installed.

7. The clarifier raker lifting device according to claim 1, characterized in that: Transmission pins (311) are respectively arranged between the shaft sleeve (309), the lead screw (308) and the auxiliary lifting gear (306).

8. The clarifier rake lifting device according to claim 1, characterized in that: The upper end of the upper lifting support (301) is provided with a nut (304) and a lubricating oil pipe (312) is respectively provided on the nut.

9. The clarifier rake lifting device according to claim 1, characterized in that: It also includes a limiting mechanism (4), wherein the limiting mechanism (4) includes a cover shell (401), a limiter (402) is provided inside the cover shell (401), and a top plate (403) is provided on the top of the lead screw (308).

10. The clarifier rake lifting device according to claim 9, characterized in that: A pointer (404) is provided on one side of the top plate (403), a scale (405), a pressure plate (406) and a window plate (407) are provided on one side of the cover shell (401), and a limit switch protection cover (408) is provided on the other side.

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