CN220030055U

CN220030055U - Lower guide shoe dismounting tool for small-space operation

Info

Publication number: CN220030055U
Application number: CN202320834877.5U
Authority: CN
Inventors: 陶建旭; 何强锋; 徐凯圆; 何佳; 覃创吉; 李瑶
Original assignee: China Yangtze Power Co Ltd
Current assignee: China Yangtze Power Co Ltd
Priority date: 2023-04-14
Filing date: 2023-04-14
Publication date: 2023-11-17
Anticipated expiration: 2033-04-14

Abstract

The utility model provides a lower guide shoe assembly and disassembly tools for little space operation, includes crossbeam and support frame, the support frame includes first support post, second support post and supporting beam, and install respectively on first support post and second support post at the both ends of supporting beam, and install respectively on the supporting beam of two support frames at the both ends of crossbeam, the both ends of first support post and second support post have the supporting seat that is used for supporting and top to solid in the screw thread joint respectively, install lifting tool on the crossbeam. The lower guide shoe can be hoisted under the condition of limited space, so that the operation risk is reduced, and the operation efficiency is improved.

Description

Lower guide shoe dismounting tool for small-space operation

Technical Field

The utility model relates to the technical field of maintenance of hydraulic generators, in particular to a lower guide shoe dismounting tool for small-space operation.

Background

In the conventional overhaul process of the hydroelectric generating set, overhaul and maintenance are usually required for the lower guide shoe. The lower oil guide groove where the lower guide shoe of a certain large hydroelectric generating set is positioned is relatively low with the upper rotor, an operator can only lie prone on the lower oil guide groove platform when the lower guide shoe is disassembled, the single weight of the lower guide shoe reaches 77kg, and 2-3 persons are usually required to mutually cooperate during operation. But lower oil guide groove platform space is narrow and the platform is higher apart from ground basis, personnel have the risk of falling at the operation in-process. The traditional mode operation generally carries out the operation through the mode of manually lifting down the guide shoe, and the operating efficiency is lower, and the operation risk is higher, influences the personal safety of operation personnel.

Disclosure of Invention

The utility model aims to solve the technical problems that: the lower guide shoe dismounting tool for small-space operation can hoist the lower guide shoe under the condition of limited space, so that operation risk is reduced, and operation efficiency is improved.

In order to achieve the technical characteristics, the aim of the utility model is realized in the following way: the utility model provides a lower guide shoe assembly and disassembly tools for little space operation, includes crossbeam and support frame, the support frame includes first support post, second support post and supporting beam, and install respectively on first support post and second support post at the both ends of supporting beam, and install respectively on the supporting beam of two support frames at the both ends of crossbeam, the both ends of first support post and second support post have the supporting seat that is used for supporting and top to solid in the screw thread joint respectively, install lifting tool on the crossbeam.

The first support stand and the second support stand are assembled by at least one stand unit respectively, the stand unit comprises a main rod, the upper end of the main rod is provided with a bearing platform, a plurality of threaded holes are formed in the bearing platform, the middle of the upper side of the bearing platform is provided with first external threads which extend out, and the lower end of the main rod is provided with second external threads.

The first support upright post comprises two upright post units, the two upright post units are connected through threaded sleeves, a bearing platform of the upright post unit at the upper side faces upwards, and support seats are respectively arranged on a first external thread of the upright post unit at the upper side and a second external thread of the upright post unit at the lower side; the second support upright post comprises an upright post unit, a bearing platform of the upright post unit faces upwards, and a support seat is respectively arranged on a first external thread and a second external thread of the upright post unit; and two ends of the supporting beam are respectively arranged on bearing platforms at the upper sides of the first supporting upright post and the second supporting upright post, and bolts penetrate through the supporting beam and are connected with the threaded holes.

The hoisting tool comprises a fixed pulley and a rope, wherein the fixed pulley is arranged on the cross beam, and one end of the rope bypasses the fixed pulley from the upper side and is used for hoisting the lower guide shoe.

The lifting tool further comprises a movable pulley, one end of the rope bypasses the fixed pulley from the upper side, and after the rope bypasses the lower side of the driven pulley, the rope is fixedly connected to the beam, and a lifting hook is arranged on the movable pulley.

The utility model has the following beneficial effects:

1. the two ends of the first support upright post and the second support upright post are respectively screwed with supporting seats for supporting and jacking fixedly, the first support upright post and the second support upright post are jacked and fixed between the upper structure and the lower structure through the supporting seats screwed with the two ends of the first support upright post and the second support upright post, so that the first support upright post and the second support upright post are fixed, the two ends of the supporting beam are respectively installed on the first support upright post and the second support upright post, the two ends of the cross beam are respectively installed on the supporting beams of the two supporting frames, lifting tools are installed on the cross beam, through the structure, the lifting of the lower guide shoe can be carried out under the condition of limited space, and the stability is good, thereby reducing the operation risk and improving the operation efficiency.

2. The first support upright and the second support upright are assembled by at least one upright unit respectively, so that the first support upright is convenient to transport into an operation space.

Drawings

Fig. 1 is a schematic perspective view of the present utility model in use.

Fig. 2 is a schematic perspective view of the column unit of the present utility model.

Fig. 3 is a schematic perspective view of a first support column according to the present utility model.

Fig. 4 is a schematic perspective view of a second support column according to the present utility model.

In the figure: the beam 10, the first support upright 20, the threaded sleeve 21, the support seat 22, the second support upright 30, the support beam 40, the fixed pulley 50, the rope 60, the movable pulley 70, the upright post unit 80, the main rod 81, the bearing platform 82, the threaded hole 83, the first external thread 84 and the second external thread 85.

Detailed Description

Embodiments of the present utility model will be further described with reference to the accompanying drawings.

Referring to fig. 1-4, a lower guide shoe dismounting tool for small space operation comprises a cross beam 10 and a supporting frame, wherein the supporting frame comprises a first supporting upright 20, a second supporting upright 30 and a supporting beam 40, two ends of the supporting beam 40 are respectively arranged on the first supporting upright 20 and the second supporting upright 30, two ends of the cross beam 10 are respectively arranged on the supporting beams 40 of the two supporting frames, two ends of the first supporting upright 20 and two ends of the second supporting upright 30 are respectively in threaded connection with a supporting seat 22 for supporting and jacking, and a lifting tool is arranged on the cross beam 10. The both ends of first support stand 20 and second support stand 30 have the supporting seat 22 that is used for supporting and top to admittedly soon respectively, when using, through the supporting seat 22 that first support stand 20 and second support stand 30 both ends connect soon, prop up first support stand 20 and second support stand 30 between the upper and lower structure, thereby fix first support stand 20 and second support stand 30, supporting beam 40 can be through butt plate and first support stand 20 and second support stand 30 erection joint fixed, or supporting beam 40 both ends set up the staple bolt structure, supporting beam 40 passes through staple bolt structure and first support stand 20 and second support stand 30 erection joint fixed. The beam 10 is provided with a lifting tool so as to conveniently lift the lower guide shoe. Through the structure, the lower guide shoe can be hoisted under the condition of limited space, and the stability is good, so that the operation risk is reduced, and the operation efficiency is improved.

Since the first support column 20 has a greater height than the second support column according to an actual installation structure, the first support column 20 and the second support column 30 are assembled from at least one column unit 80, respectively, in order to facilitate the transfer of the first support column 20 into the working space. Referring to the body 2, the stand column unit 80 includes a main rod 81, a bearing platform 82 is provided at an upper end of the main rod 81, a plurality of threaded holes 83 are provided on the bearing platform 82, a first external thread 84 extending out is provided at a middle part of an upper side of the bearing platform 82, and a second external thread 85 is provided at a lower end of the main rod 81.

Specifically, referring to fig. 3 and 4, the first support column 20 includes two column units 80, the two column units 80 are connected by a threaded sleeve 21, a bearing platform 82 of the upper column unit 80 faces upwards, and the support base 22 is respectively mounted on a first external thread 84 of the upper column unit 80 and a second external thread 85 of the lower column unit 80; the second supporting upright 30 comprises an upright unit 80, a bearing platform 82 of the upright unit 80 faces upwards, and the supporting base 22 is respectively installed on a first external thread 84 and a second external thread 85 of the upright unit 80; the two ends of the supporting beam 40 are respectively installed on the bearing platforms 82 on the upper sides of the first supporting upright 20 and the second supporting upright 30, and bolts penetrate through the supporting beam 40 and are connected with the threaded holes 83.

In a preferred embodiment, the hoisting tool comprises a fixed sheave 50 and a rope 60, said fixed sheave 50 being mounted on the cross beam 10, one end of the rope 60 being passed around the fixed sheave 50 from the upper side for hoisting the lower guide shoe. The structure is simple, and the lower guide shoe is convenient to hang by pulling the other end of the rope 60.

Further, referring to fig. 1, the lifting tool further includes a movable pulley 70, one end of the rope 60 passes around the fixed pulley 50 from the upper side, and is fixedly connected to the cross beam 10 after passing around the lower side of the movable pulley 70, and a lifting hook is mounted on the movable pulley 70. The movable pulley 70 is provided to make manual pulling of the rope 60 more labor-saving.

Of course, the lifting tool may employ a small-sized electric hoist in addition to the above-described structure.

The working process or principle of the utility model:

when the lower guide shoe is dismounted, the supporting seats 22 at the two ends of the first supporting upright post 20 and the second supporting upright post 30 are tightly abutted between the upper structure and the lower structure by rotating the first supporting upright post 20 and the second supporting upright post 30, so that the first supporting upright post 20 and the second supporting upright post 30 are fixed, the two ends of the supporting beam 40 are respectively arranged on the bearing platforms 82 at the upper sides of the first supporting upright post 20 and the second supporting upright post 30, bolts penetrate through the supporting beam 40 to be connected with threaded holes 83, the supporting beam 40 is respectively connected and fixed with the first supporting upright post 20 and the second supporting upright post 30, then the cross beam 10 is arranged on the supporting beam 40, one end of a rope 60 is wound around the fixed pulley 50 from the upper side, and then the lower side of the driven pulley 70 is wound around the lower structure, and then is fixedly connected on the cross beam 10, and the other end of the rope 60 is pulled, so that the lower guide shoe is conveniently hoisted.

Claims

1. A lower guide shoe assembly and disassembly tools for little space operation, its characterized in that: including crossbeam (10) and support frame, the support frame includes first support column (20), second support column (30) and supporting beam (40), and install respectively on first support column (20) and second support column (30) at the both ends of supporting beam (40), install respectively on the supporting beam (40) of two support frames at the both ends of crossbeam (10), the both ends of first support column (20) and second support column (30) are threaded respectively and are screwed and are used for supporting and prop up supporting seat (22) admittedly, install lifting tool on crossbeam (10).

2. The lower guide shoe removing and installing tool for small space work according to claim 1, wherein: the first support upright post (20) and the second support upright post (30) are respectively assembled by at least one upright post unit (80), the upright post unit (80) comprises a main rod (81), a bearing platform (82) is arranged at the upper end of the main rod (81), a plurality of threaded holes (83) are formed in the bearing platform (82), a first external thread (84) extending out is formed in the middle of the upper side of the bearing platform (82), and a second external thread (85) is formed at the lower end of the main rod (81).

3. A lower guide shoe removing tool for small space work according to claim 2, wherein: the first support upright post (20) comprises two upright post units (80), the two upright post units (80) are connected through a threaded sleeve (21), a bearing platform (82) of the upright post unit (80) at the upper side faces upwards, and a support seat (22) is respectively arranged on a first external thread (84) of the upright post unit (80) at the upper side and a second external thread (85) of the upright post unit (80) at the lower side; the second support upright post (30) comprises an upright post unit (80), a bearing platform (82) of the upright post unit (80) faces upwards, and a support seat (22) is respectively arranged on a first external thread (84) and a second external thread (85) of the upright post unit (80); two ends of the supporting beam (40) are respectively arranged on bearing platforms (82) on the upper sides of the first supporting upright post (20) and the second supporting upright post (30), and bolts penetrate through the supporting beam (40) to be connected with threaded holes (83).

4. The lower guide shoe removing and installing tool for small space work according to claim 1, wherein: the hoisting tool comprises a fixed pulley (50) and a rope (60), wherein the fixed pulley (50) is arranged on the cross beam (10), and one end of the rope (60) bypasses the fixed pulley (50) from the upper side and is used for hoisting the lower guide shoe.

5. The lower guide shoe removing and installing tool for small space work according to claim 4, wherein: the hoisting tool further comprises a movable pulley (70), one end of the rope (60) bypasses the fixed pulley (50) from the upper side, the lower side of the driven pulley (70) bypasses, the hoisting tool is fixedly connected to the cross beam (10), and a lifting hook is arranged on the movable pulley (70).