Lower guide shoe hoisting device

Abstract

A lower guide shoe hoisting device comprises a hoisting mechanism and an installation mechanism, the hoisting mechanism comprises a hoisting arm assembly and a supporting column, the hoisting arm assembly is fixed to the supporting column, and a hoisting rope used for hoisting a lower guide shoe is installed on the hoisting arm assembly; the mounting mechanism comprises a magnetic attraction base arranged at the bottom of the supporting column and an adjusting top base arranged at the top of the supporting column; the supporting column comprises a main column body and an auxiliary column body, and a rotating shaft is arranged between the main column body and the auxiliary column body. By means of the hoisting device, hoisting of the lower guide shoe in a narrow space can be achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of generator maintenance equipment, and particularly relates to a lower guide bearing tile hoisting device. Background Technique

[0002] As one of the core components of the hydro-generator set, the lower guide bearing in the hydro-generator set plays a crucial role. It is mainly responsible for balancing the radial load generated by the rotating components of the unit and ensuring the stable operation of the thrust head within the preset precise clearance. In the annual mechanical maintenance plan, the maintenance of the lower guide bearing is indispensable, and the disassembly, installation and detailed inspection of the lower guide bearing tile are the technical bottlenecks in this task. When facing 42 lower guide bearing tiles with a specific configuration in a certain power station, each weighing 112 kg, traditional tools often seem inadequate, resulting in a long operation process and high labor intensity. Coupled with the unique basement environment of the hydropower station, the space is cramped, with only about 0.3 m of vertical space, and the lower guide bearing tile is located within the lower guide oil tank, further increasing the operation difficulty.

[0003] Under such restricted conditions, personnel cooperation is severely limited, and the lower guide bearing tile is prone to shaking or accidental detachment during the disassembly and assembly process, which not only threatens the integrity of the equipment but also may pose a safety hazard to on-site workers. Content of the Utility Model

[0004] The utility model provides a lower guide bearing tile hoisting device to solve the problem that the lower guide bearing tile is not convenient for disassembly and assembly in a narrow space.

[0005] To solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A lower guide bearing tile hoisting device, comprising:

[0007] A hoisting mechanism, including a boom assembly and a support column, the boom assembly is fixed on the support column, and a hoisting rope for hoisting the lower guide bearing tile is installed on the boom assembly;

[0008] An installation mechanism, including a magnetic suction base arranged at the bottom of the support column and an adjusting top seat arranged at the top of the support column;

[0009] The support column includes a main column body and a secondary column body, and a rotating shaft is arranged between the main column body and the secondary column body.

[0010] Further, the boom assembly includes a first boom and a second boom, the second boom is fixed on the support column, and the first boom is slidably inserted into the second boom from the end of the second boom away from the support column.

[0011] Further, an inclined strut is arranged between the second boom and the support column.

[0012] Further, both the adjusting top seat and the magnetic suction base are threadedly inserted into the support column.

[0013] Further, a counterweight device is detachably installed on the support column, and the counterweight device is arranged on the side of the support column opposite to the side where the boom assembly is provided.

[0014] Further, the counterweight device includes a counterweight block and a mounting screw, and the mounting screw passes through the counterweight block and is threadedly connected to the support column.

[0015] Further, a directional pulley set is provided at the end of the first boom away from the second boom, and guide rings are fixed on the first boom and the second boom, and the lifting rope passes through a plurality of guide rings and the directional pulley set at the same time.

[0016] Further, limiting grooves are inwardly formed on the side walls of both the main column body and the auxiliary column body, limiting members are arranged in the limiting grooves, and the limiting members are inserted into the limiting grooves of both the main column body and the auxiliary column body at the same time.

[0017] The utility model can achieve the following beneficial effects:

[0018] 1. The hoisting device of the present application is provided with a hoisting mechanism to realize the hoisting of the lower guide shoe, an installation mechanism to realize the stable support of the hoisting mechanism, and a rotating shaft to drive the hoisting device to rotate after the hoisting mechanism hoists out the lower guide shoe, so as to horizontally transport the lower guide shoe out; with the hoisting device of the present application, it is no longer necessary to manually install a lifting ring and carry the lower guide shoe, reducing the risk of the lower guide shoe shaking or falling, thereby ensuring the safety and stability of the hoisting process.

[0019] 2. The counterweight device is provided to enable the support column to better maintain stability and balance. When the boom assembly hoists the lower guide shoe, the counterweight device can balance the weight of the boom assembly, reducing the risk of the support column becoming unstable.

[0020] 3. The limiting member is provided to lock the support column. When the lower guide shoe is hoisted upward by the hoisting mechanism, the stability of the support column can be maintained; when the upper guide shoe needs to be horizontally hoisted after the upward hoisting is completed, the locking of the limiting member can be released to realize the rotation of the boom assembly. Description of the Drawings

[0021] The following further describes the present utility model in conjunction with the drawings and embodiments:

[0022] Figure 1 It is a schematic diagram of the overall structure of a lower guide shoe hoisting device of the present utility model;

[0023] Figure 2 It is a front view of a lower guide shoe hoisting device of the present utility model.

[0024] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0025] 1. Boom assembly; 11. First boom; 12. Second boom; 13. Directional pulley set; 14. Guide ring; 15. Hoisting rope; 2. Support column; 21. Main column body; 22. Sub-column body; 23. Rotating shaft; 24. Limit groove; 3. Magnetic suction base; 4. Adjusting top seat; 5. Diagonal strut; 6. Counterweight device; 61. Counterweight block; 62. Mounting screw; 7. Limiting member. Detailed implementation manners

[0026] To facilitate the understanding of this application, the following will describe this application more comprehensively with reference to the relevant attached drawings. Embodiments of this application are shown in the attached drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of this application more thorough and comprehensive.

[0027] As Figure 1 and Figure 2 shown, a lower guide shoe hoisting device includes a hoisting mechanism and a mounting mechanism. The hoisting mechanism is used to hoist the lower guide shoe, and the mounting mechanism is used to stably support the hoisting mechanism.

[0028] The hoisting mechanism includes a boom assembly 1 and a support column 2. The support column 2 is vertically arranged in the underground space, and the boom assembly 1 is fixed on the side wall of the support column 2. Among them, the boom assembly 1 includes a first boom 11 and a second boom 12. One end of the first boom 11 is slidably inserted into the end of the second boom 12, and the end of the second boom 12 away from the first boom 11 is fixed on the support column 2. A hoisting rope 15 for hoisting the lower guide shoe is installed on the boom assembly 1. One end of the hoisting rope 15 is fixed on the second boom 12 or the support column 2. The hoisting rope 15 extends along the boom assembly 1. A directional pulley set 13 is arranged at the end of the first boom 11 away from the second boom 12. Guide rings 14 are fixed on the side walls of both the first boom 11 and the second boom 12. The hoisting rope 15 passes through each guide ring 14 and then bypasses the directional pulley set 13.

[0029] By setting the guide rings 14 and the directional pulley set 13, the hoisting rope 15 is more stable when hoisting and moving the lower guide shoe, the lower guide shoe is not easily shaken, and the possibility of the lower guide shoe hitting other structures during the hoisting process is reduced. A control panel is also arranged on the support column 2. The control panel is electrically connected to the motor, and the motor is used to control the winding and unwinding of the hoisting rope 15 and the telescoping of the boom assembly 1.

[0030] Among them, a diagonal strut 5 is arranged between the second boom 12 and the support column 2. Both ends of the diagonal strut 5 are fixedly connected to the second boom 12 and the support column 2 respectively, forming a triangular support. Thus, when the hoisting device of this application hoists the lower guide shoe, the bearing capacity is stronger and the overall structure is more stable.

[0031] The installation mechanism includes a magnetic base 3 provided at the bottom of the support column 2 and an adjusting top base 4 provided at the top of the support column 2. Both the magnetic base 3 and the adjusting top base 4 are threadedly connected to the support column 2, and a magnetic switch for controlling the magnetism of the magnetic base 3 is provided on the magnetic base 3. When the magnetic switch is closed, power is supplied, and the magnetic base 3 has magnetism; when the magnetic base 3 is powered off, the magnetism of the magnetic base 3 disappears.

[0032] Due to the narrow underground space, the vertical space is only about 0.3 m. When installing the hoisting device of the present application, the support column 2 is placed in the underground space, and the magnetic switch is closed to energize the magnetic base 3, so that the magnetic base 3 can be magnetically connected to the bottom wall of the underground space and firmly fixed; at this time, by rotating the support column 2, the support column 2 can move up and down relative to the magnetic base 3, and at the same time, by rotating the adjusting top base 4 in cooperation, the adjusting top base 4 can move up and down relative to the support column 2, thereby being able to adjust the overall height of the hoisting device of the present application. After adjustment, the adjusting top base 4 abuts against the top wall of the underground space. At this time, when the boom assembly 1 hoists the lower guide tile, the support column 2 can stably support the boom assembly 1, and the support column 2 is not easily tilted or overturned.

[0033] Further, the support column 2 includes a main column body 21 and a sub-column body 22. The sub-column body 22 has two sections and is respectively provided at both ends of the main column body 21. A rotating shaft 23 is provided between the main column body 21 and the sub-column body 22, so that the main column body 21 can rotate relative to the sub-column body 22. After the hoisting mechanism vertically hoists out the lower guide tile, the main column body 21 can be rotated to realize the horizontal hoisting of the lower guide tile.

[0034] Limiting grooves 24 are also inwardly provided on the side walls of the main column body 21 and the sub-column body 22. Limiting members 7 are inserted into the limiting grooves 24. Each limiting member 7 is inserted into the limiting grooves 24 of both the main column body 21 and the sub-column body 22. There are two limiting members 7, so that the main column body 21 and the upper and lower sub-column bodies 22 can be locked, thereby restricting the rotation of the main column body 21 relative to the sub-column body 22. When vertically hoisting the lower guide tile, the positions of the main column body 21 and the sub-column body 22 are locked, which is convenient for realizing the stable vertical hoisting of the lower guide tile.

[0035] A counterweight device 6 is also provided on the support column 2. The counterweight device 6 includes a counterweight block 61 and a mounting screw 62. The mounting screw 62 passes through the counterweight block 61 and is threadedly connected to the support column 2. The counterweight block 61 is placed on the side of the support column 2 opposite to the boom assembly 1. The force balance of the support column 2 is adjusted by the counterweight block 61 to reduce the occurrence of the situation of the support column 2 being unstable due to unilateral force. In addition, a long hole is provided on the counterweight block 61. When the main column body 21 moves up and down relative to the magnetic base 3, the mounting screw 62 can slide in the long hole.

[0036] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A lower guide shoe hoisting device, characterized in that: include: A lifting mechanism, comprising a lifting arm assembly (1) and a support column (2), wherein the lifting arm assembly (1) is fixed to the support column (2), and a lifting rope (15) for lifting the lower guide shoe is installed on the lifting arm assembly (1); The mounting mechanism comprises a magnetic base (3) arranged at the bottom of the support column (2) and an adjustable top seat (4) arranged at the top of the support column (2); The support column (2) comprises a main column (21) and a secondary column (22), and a rotation shaft (23) is provided between the main column (21) and the secondary column (22).

2. A lower guide shoe hoisting device according to claim 1, characterized in that: The boom assembly (1) comprises a first boom (11) and a second boom (12), wherein the second boom (12) is fixed to the support column (2), and the first boom (11) is slidably inserted into the second boom (12) from an end of the second boom (12) away from the support column (2).

3. A lower guide shoe hoisting device according to claim 2, characterized in that: An oblique support rod (5) is provided between the second suspension arm (12) and the support column (2).

4. A lower guide shoe hoisting device according to claim 1, characterized in that: The adjustable top seat (4) and the magnetic base (3) are both threadedly inserted into the support column (2).

5. The lower guide shoe hoisting device according to claim 1, characterized in that: A counterweight device (6) is detachably mounted on the support column (2), and the counterweight device (6) is arranged on a side of the support column (2) opposite to the side on which the boom assembly (1) is arranged.

6. A lower guide shoe hoisting device according to claim 5, characterized in that: The counterweight device (6) comprises a counterweight block (61) and a mounting screw rod (62), wherein the mounting screw rod (62) passes through the counterweight block (61) and is threadedly connected to the support column (2).

7. A lower guide shoe hoisting device according to claim 2, characterized in that: A directional pulley block (13) is provided at the end of the first boom (11) away from the second boom (12), and guide rings (14) are fixed on the first boom (11) and the second boom (12), and the suspension rope (15) passes through a plurality of guide rings (14) and directional pulley blocks (13) at the same time.

8. The lower guide shoe hoisting device according to claim 1, characterized in that: The side walls of the main column (21) and the auxiliary column (22) are both provided with limiting grooves (24) facing inwards, and limiting members (7) are arranged in the limiting grooves (24). The limiting members (7) are simultaneously inserted into the limiting grooves (24) of the main column (21) and the auxiliary column (22).

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