阅读说明：本技术 一种核电爆破阀中阀盖和活塞的装配装置 (Assembling device for valve cover and piston in nuclear power explosion valve ) 是由 李玮 文忠 闫国华 俞照辉 于 2020-05-15 设计创作，主要内容包括：本方案公开了一种核电爆破阀中阀盖和活塞装配装置,所述阀盖通过拉紧螺栓与活塞连接,包括：第一支撑部、锁紧部和驱动部；所述阀盖设置在第一支撑部上；所述锁紧部设置在所述活塞外侧；所述锁紧部在所述驱动部输出的旋转动力的作用下,带动活塞转动,以使活塞从拉紧螺栓上分离,或者,使活塞安装到拉紧螺栓上。本方案能够有效避免阀盖与活塞分离及组装过程中拉紧螺栓弯曲及断裂风险,提高阀盖与活塞的拆装效率,降低人力成本；同时,能够避免对工作人员造成人身伤害。(This scheme discloses valve gap and piston assembly quality in nuclear power explosion valve, the valve gap passes through tie bolt and piston connection, include: the locking device comprises a first supporting part, a locking part and a driving part; the valve cover is arranged on the first supporting part; the locking part is arranged on the outer side of the piston; the locking part drives the piston to rotate under the action of the rotating force output by the driving part, so that the piston is separated from the tensioning bolt, or the piston is installed on the tensioning bolt. The scheme can effectively avoid the bending and breaking risks of the tension bolt in the separation and assembly processes of the valve cover and the piston, improve the disassembly and assembly efficiency of the valve cover and the piston and reduce the labor cost; meanwhile, personal injury to workers can be avoided.)

1. The utility model provides an assembly quality of valve gap and piston in nuclear power blast valve, valve gap (1) is connected with the piston through lag bolt (2), its characterized in that includes: a first supporting part (4), a locking part (5) and a driving part (6);

the valve cover (1) is arranged on the first supporting part (4);

the locking part (5) is arranged on the outer side of the piston (3);

the locking part (5) drives the piston (3) to rotate under the action of the rotating force output by the driving part (6) so as to separate the piston (3) from the tensioning bolt (2), or the piston (3) is installed on the tensioning bolt (2).

2. The fitting device according to claim 1, characterised in that said locking portion (5) comprises: a first clasping mechanism (501) and a second clasping mechanism (502);

the piston (3) is fixed on the first clasping mechanism (501) and the second clasping mechanism (502), and the piston (3) is fixed with the driving part (6) through the first clasping mechanism (501) and the second clasping mechanism (502).

3. The mounting device according to claim 2, characterized in that the first clasping mechanism (501) and the second clasping mechanism (502) are identical in structure;

the clasping mechanism comprises: the semi-cylindrical structure is provided with a first groove body and a second groove body;

the shape of the first groove body is matched with the shape of a piston head of the piston (3); the shape of the second groove body is matched with the shape of a piston plate fixed below the piston head;

the first enclasping mechanism (501) and the second enclasping mechanism (502) fix the piston (3) in an enclasping mode.

4. The fitting arrangement according to claim 3, characterised in that the semi-cylindrical structure is provided with at least one mounting hole in the radial direction of the piston (3); and fastening the first clasping mechanism (501) and the second clasping mechanism (502) by using a fastener to penetrate through the mounting hole.

5. The fitting arrangement according to claim 3, characterised in that the semi-cylindrical structure is provided with at least one guide hole in the axial direction of the piston (3); the guide hole is matched with a transmission column (702) arranged on the driving part (6) for transmission.

6. The fitting arrangement according to claim 5, characterised in that a copper bush (503) is provided in the guide bore.

7. The fitting device according to claim 1, characterized in that said driving portion (6) comprises: a transmission mechanism (7) and a driving mechanism (8); the rotary power provided by the driving mechanism (8) is transmitted to the locking part (5) through the transmission mechanism (7).

8. The fitting arrangement according to claim 7, characterised in that the transmission mechanism (7) comprises: a transmission disc (701) and a plurality of transmission posts (702) arranged on the transmission disc (701);

the transmission column (702) is matched with a guide hole arranged on the locking part (5) to transmit the rotary power provided by the driving mechanism (8) to the locking part (5);

the transmission disc (701) is connected with the driving mechanism (8) through a transmission shaft arranged below the transmission disc.

9. The mounting arrangement, as set forth in claim 8, characterized in that the upper surface of the driving plate (701) holds vertically 4 driving studs (702) arranged in an array.

10. The fitting device according to claim 7, characterised in that an ultra-thin jack (10) is provided above the transmission disc (701).

11. The fitting arrangement according to claim 7, characterised in that the drive mechanism (8) comprises: a motor (801) and a speed reducer (802);

the power input end of the speed reducer (802) is connected with the power output end of the motor (801); and the power end of the speed reducer (802) is connected with the transmission mechanism (7).

12. The mounting device according to claim 7, characterized in that the drive mechanism (8) is connected to the transmission mechanism (7) by means of an adapter piece (9).

13. The fitting device according to claim 12, characterised in that said adaptor (9) comprises: and the coupling (902) is used for connecting the transmission mechanism (7) and the driving mechanism (8).

14. The fitting device according to claim 7, characterised in that the drive portion (6) comprises: and the second supporting parts (11) of the transmission mechanism (7) and the driving mechanism (8) are sequentially fixed from top to bottom.

15. The fitting arrangement according to claim 14, characterised in that the second support (11) comprises: a first frame body (1101) and a second frame body (1102) which are fixed from top to bottom in sequence;

the transmission mechanism (7) is arranged on the first frame body (1101) through a thrust bearing (901);

the driving mechanism (8) is fixed on the second frame body (1102).

16. The fitting arrangement according to claim 14, characterised in that the second support (11) comprises: and a second adjusting mechanism (1103) arranged below the second frame body (1102) and used for leveling the second supporting part (11).

17. The fitting arrangement according to claim 1, characterised in that the first support (4) comprises: a support base (401) having a through hole and a plurality of support legs (402) disposed below the support base (401);

and reinforcing ribs (403) are arranged between the supporting legs (402) and the supporting platform (401).

18. An assembly device according to claim 17, characterised in that a first adjusting mechanism (404) for levelling the first support (4) is provided below the support leg (402).

Technical Field

This scheme relates to explosion valve for nuclear power detects maintenance technical field, concretely relates to be applied to installation and the assembly quality of separation of valve gap and piston among nuclear power explosion valve.

Background

At present, the AP1000/CAP1400 series of the third-generation nuclear power plants use the blast valve, which is the first use of the blast valve in the field of civil nuclear power. According to the maintenance outline of the explosion valve of the nuclear power plant and the requirement of the technical specification of the explosion valve, the explosion valve needs to be subjected to preventive disassembly maintenance.

In the disassembly and maintenance process of the AP1000/CAP1400 explosion valve, the valve cover, the piston and the tensioning bolt are integrally disassembled, and then the valve cover is separated from the piston, so that the complete disassembly of the explosion valve is realized. As shown in fig. 1.

In the prior art, the valve cover and the piston are disassembled and assembled without special tools, but the disassembling and the assembling are realized by experienced workers by tools such as a travelling crane, a sling, an F-shaped long handle wrench and the like. The valve cover and piston assembly are first placed on a seat adapted to the piston by a crane. The operator inserts an F-shaped wrench into the valve cover bolt hole, and the wrench is used for pushing the valve cover to rotate anticlockwise, so that the valve cover and the tightening bolt are slowly separated by relative rotation of threads of the tightening bolt and the piston. During rotation, another worker needs to slowly lift the valve cover with the traveling crane in time to avoid the piston from being died in the process of separating from the tension bolt.

The traditional installation and separation mode not only influences the disassembly and assembly efficiency of the explosion valve, but also can cause personal injury to operators.

Disclosure of Invention

This scheme is anticipated is providing an assembly quality that is applied to installation and separation of valve gap and piston among nuclear power explosion valve.

In order to achieve the purpose, the technical scheme is as follows:

this scheme provides a valve gap and piston assembly device among nuclear power explosion valve, valve gap 1 passes through tie bolt 2 and is connected with the piston, include: a first supporting part 4, a locking part 5 and a driving part 6;

the valve cover 1 is arranged on the first supporting part 4;

the locking part 5 is arranged outside the piston 3;

the locking portion 5 rotates the piston 3 under the rotational force output from the driving portion 6, so that the piston 3 is separated from the tension bolt 2, or the piston 3 is mounted on the tension bolt 2.

In a preferred embodiment, the locking portion 5 comprises: a first clasping mechanism 501 and a second clasping mechanism 502;

the piston 3 is fixed to the first clasping mechanism 501 and the second clasping mechanism 502, and the piston 3 and the driving unit 6 are fixed by the first clasping mechanism 501 and the second clasping mechanism 502.

In a preferred embodiment, the first clasping mechanism 501 and the second clasping mechanism 502 are identical in structure;

the clasping mechanism comprises: the semi-cylindrical structure is provided with a first groove body and a second groove body;

the shape of the first groove body is matched with the shape of the piston head of the piston 3; the shape of the second groove body is matched with the shape of a piston plate fixed below the piston head;

the first clasping mechanism 501 and the second clasping mechanism 502 fix the piston 3 in an encircling manner.

In a preferred embodiment, the semi-cylindrical structure is provided with at least one mounting hole in a radial direction of the piston 3; the first clasping mechanism 501 and the second clasping mechanism 502 are fixed by fasteners through the mounting holes.

In a preferred embodiment, the semi-cylindrical structure is provided with at least one guide hole in the axial direction of the piston 3; the guide hole is matched with a transmission column 702 arranged on the driving part 6 for transmission.

In a preferred embodiment, a copper bushing 503 is disposed in the guide hole.

In a preferred embodiment, the driving portion 6 includes: a transmission mechanism 7 and a driving mechanism 8; the rotational power provided by the driving mechanism 8 is transmitted to the locking part 5 through the transmission mechanism 7.

In a preferred embodiment, said transmission mechanism 7 comprises: a transmission disc 701 and a plurality of transmission posts 702 arranged on the transmission disc 701;

the transmission column 702 is matched with a guide hole arranged on the locking part 5 to transmit the rotary power provided by the driving mechanism 8 to the locking part 5;

the transmission plate 701 is connected to the driving mechanism 8 through a transmission shaft disposed below the transmission plate.

In a preferred embodiment, 4 driving columns 702 arranged in an array are vertically fixed on the upper surface of the driving plate 701.

In a preferred embodiment, an ultra-thin jack 10 is arranged above the transmission disc 701.

In a preferred embodiment, said drive mechanism 8 comprises: a motor 801 and a speed reducer 802;

the power input end of the speed reducer 802 is connected with the power output end of the motor 801; and the power end of the speed reducer 802 is connected with the transmission mechanism 7.

In a preferred embodiment, the drive means 8 is connected to the transmission means 7 via an adapter 9.

In a preferred embodiment, said adaptor 9 comprises: a coupling 902 for connecting the transmission mechanism 7 and the drive mechanism 8.

In a preferred embodiment, the driving portion 6 includes: and the second supporting parts 11 of the transmission mechanism 7 and the driving mechanism 8 are fixed from top to bottom in sequence.

In a preferred embodiment, the second support 11 comprises: a first frame 1101 and a second frame 1102 fixed from top to bottom in sequence;

the transmission mechanism 7 is arranged on the first frame 1101 through a thrust bearing 901;

the driving mechanism 8 is fixed on the second frame body 1102.

In a preferred embodiment, the second support 11 comprises: and a second adjusting mechanism 1103 disposed below the second frame body 1102 for leveling the second support portion 11.

In a preferred embodiment, the first support 4 comprises: a support base 401 having a through hole and a plurality of support legs 402 disposed below the support base 401;

reinforcing ribs 403 are arranged between the support legs 402 and the support platform 401.

In a preferred embodiment, a first adjusting mechanism 404 for leveling the first support 4 is provided below the support leg 402.

Advantageous effects

The scheme can effectively avoid the bending and breaking risks of the tension bolt in the separation and assembly processes of the valve cover and the piston, improve the disassembly and assembly efficiency of the valve cover and the piston and reduce the labor cost; meanwhile, personal injury to workers can be avoided.

Drawings

FIG. 1 shows a schematic assembly diagram of a valve cover, a tension bolt and a piston in the explosion valve;

fig. 2 shows a front view of the assembly device according to the present solution;

fig. 3 shows an exploded view of the mounting device according to the present solution.

Reference numerals

1. A valve cover;

2. tightening the bolts;

3. a piston;

4. a first supporting part 401, a supporting platform 402, supporting legs 403, reinforcing ribs 404 and a first adjusting mechanism;

5. the locking part 501, the first clasping mechanism 502, the second clasping mechanism 503 and the copper bush;

6. a drive section;

7. the transmission mechanism 7, 701, the transmission disc, 702 and the transmission column;

8. a driving mechanism 801, a motor 802 and a speed reducer;

9. an adapter 901, a thrust bearing 902 and a coupling;

10. an ultrathin jack;

11. a second support part 1101, a first frame body 1102, a second frame body 1103 and a second adjusting mechanism.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and are not intended to limit the present invention.

In the description of the present embodiment, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present embodiment, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

Through research and analysis, in the traditional installation and separation operation process of the explosion valve cover 1 and the piston 3, at least 2 workers are required to coordinate, otherwise, in the separation process of the piston 3, the valve cover 1 and the tension bolt 2, the tension bolt 2 is bent and broken due to the fact that the valve cover 1 is not lifted in time, and in the process of hoisting the valve cover 1, the valve cover 1 needs to be kept in a horizontal state constantly, otherwise, the tension bolt 2 has bending and breaking risks. Meanwhile, the length of the threaded connection between the tension bolt 2 and the piston 3 is long, and the threads are fine threads, so that a worker can completely separate the tension bolt 2 from the piston 3 only by pushing the wrench to rotate the valve cover 1 for hundreds of turns, the labor intensity of the worker is increased, and the dismounting efficiency is low. In addition, the driving needs to hang the 1 subassembly of valve gap constantly, and the risk that the 1 subassembly of valve gap dropped is great, has increased the risk that the staff received the injury.

To the problem that exists among the prior art, this scheme is anticipated is providing an assembly quality who is applied to installation and separation of valve gap 1 and piston 3 among the nuclear power explosion valve, utilizes the mode of automatic dismouting to carry out the installation and the separation of explosion valve gap 1 and piston 3, not only can prevent valve gap 1 and piston 3 separation and assembly in-process 2 bending of tie bolt and fracture risk, improves valve gap 1 and piston 3's dismouting efficiency, can also reduce the human cost.

The following describes in detail an assembling apparatus for mounting and separating a valve cover 1 and a piston 3 in a nuclear power explosion valve, which is proposed by the present invention, with reference to fig. 2 and 3. This scheme assembly quality mainly includes: a first support part 4, a locking part 5 and a driving part 6. When the valve cover 1 and the piston 3 are installed or separated, the valve cover 1 is erected on the first supporting part 4; the piston 3 is fixed by the locking portion 5, and the piston 3 is connected to the driving portion 6 by the locking portion 5, and the piston 3 is mounted on the tension bolt 2 on the valve body or the piston 3 is separated from the tension bolt 2 fixed on the bonnet 1 by the rotational power provided by the driving portion 6.

In this scheme, first supporting part 4 mainly plays the supporting role to valve gap 1, and it can include: a support base 401 having a through hole, and a plurality of support legs 402 disposed below the support base 401. When the valve cover 1 and the piston 3 are installed and separated, the valve cover 1 or the valve cover 1 and piston 3 assembly is moved above the supporting platform 401 by using hoisting equipment, the through hole on the supporting platform 401 is aligned, and the piston 3 or the tension bolt 2 fixed on the valve cover 1 passes through the through hole on the supporting platform 401; after the support table 401 stabilizes the support column valve cover 1, the hoisting device is removed, and the piston 3 and/or the tension bolt 2 are suspended below the valve cover 1.

Since the weight of the assembly of the valve cover 1 and the piston 3 is large, a rib 403 is added between each support leg 402 and the support base 401 to improve the stability of the entire first support section 4. The number of ribs 403 can be adjusted according to the actual load bearing capacity, and each support leg 402 is connected to the support base 401 by two ribs 403.

Furthermore, during the actual dismantling process, the site of the factory building is not necessarily perfectly flat and may have a slight inclination, which then causes the tensioning bolts 2 to tilt. In this case, when the fastening bolt 2 is attached and detached, there is a risk that the fastening bolt 2 is bent or broken due to an external force. Therefore, in the scheme, a first adjusting mechanism 404 is additionally arranged below each supporting leg 402, and the height, the angle, the distance and other positional relations of the first supporting part 4 are adjusted through the first adjusting mechanism 404, so that in the process of dismounting, the tension bolt 2 keeps a plumb state as much as possible, and the risk that the tension bolt 2 is bent and broken is avoided. For example, the first adjusting mechanism 404 may be a fine adjusting nut, a lifting column, or the like to adjust the height, angle, or distance of the first supporting portion 4.

In this scheme, locking portion 5 mainly plays the effect of protection and power transmission to piston 3 to make piston 3 can enough rotate under the exogenic action, can not lead to its damage owing to exogenic force again. Meanwhile, the safety protection to operators in the disassembly process can be improved. Specifically, the locking portion 5 may include: a first clasping mechanism 501 and a second clasping mechanism 502; the piston 3 is fixed to the first clasping mechanism 501 and the second clasping mechanism 502, and the piston 3 and the driving unit 6 are fixed by the first clasping mechanism 501 and the second clasping mechanism 502.

The first clasping mechanism 501 and the second clasping mechanism 502 can be combined in different ways, for example, by being split up and down, clamping left and right, and so on. The piston 3 is locked by two holding mechanisms, so that the piston does not generate play or swing. In order to better match the appearance structure of the piston 3, the first clasping mechanism 501 and the second clasping mechanism 502 may also adopt different structures, so that the two clasping mechanisms respectively lock different positions of the piston 3, for example, the first clasping mechanism 501 locks a piston head in the piston 3, the second clasping mechanism 502 locks a piston plate in the piston 3, and then the first clasping mechanism 501 and the second clasping mechanism 502 are fixed, so as to lock the piston 3 by the first clasping mechanism 501 and the second clasping mechanism 502.

In order to ensure the uniformity of the force applied to the piston 3 when the piston 3 is fixed, the first clasping mechanism 501 and the second clasping mechanism 502 may be designed to have the same structure and be arranged in an axisymmetric manner. Specifically, the clasping mechanism is designed into a semi-cylindrical structure with a first groove body and a second groove body according to the structure of the piston 3, the two groove bodies are arranged inside the cylinder, the sizes of the two groove bodies are respectively matched with the shapes of the piston head and the piston plate of the piston 3, namely the first groove body can accommodate the piston head of the piston 3, and the second groove body can be used for accommodating the piston plate fixed below the piston head. Since the two clasping mechanisms have the same structure, the first clasping mechanism 501 and the second clasping mechanism 502 completely lock and fix the piston 3 in an embracing manner.

In addition, the first clasping mechanism 501 and the second clasping mechanism 502 are provided with mounting holes along the radial direction of the piston 3, and the first clasping mechanism 501 and the second clasping mechanism 502 are fixed by fasteners passing through the mounting holes. In order to ensure that the two clasping mechanisms are balanced in stress during installation, the mounting holes in each clasping mechanism are symmetrically set, and the number of the mounting holes is as even as possible. When the two clasping mechanisms clasp the piston 3, the bolt sequentially penetrates through the mounting holes of the two clasping mechanisms, and the locking bolt fixes the two clasping mechanisms.

In addition, the first clasping mechanism 501 and the second clasping mechanism 502 are provided with guide holes along the axial direction of the piston 3, and the guide holes are matched with the transmission columns 702 arranged on the driving part 6 to complete the force transmission from the driving part 6 to the locking part 5, so that the piston can keep moving along the vertical direction when the piston is separated and installed. In order to ensure that the two clasping mechanisms are balanced in stress during installation, the guide holes in each clasping mechanism are symmetrically set, and the number of the guide holes is as even as possible. In addition, when the driving portion 6 is installed, the driving post 702 on the driving portion needs to be inserted into the guiding hole, and the gap between the driving post 702 and the guiding hole is minimized, so as to prevent the clasping mechanism from shaking relative to the driving post 702. Therefore, the copper bush 503 can be provided in the guide hole in advance, which can prevent the gap between the transmission column 702 and the guide hole from being too large, and can avoid the abrasion of the transmission column 702 to the guide hole.

It should be noted that, because the size of the piston head in the structure of the piston 3 itself needs to be larger than the size of the piston plate, the size of the first groove body is necessarily larger than the size of the second groove body, therefore, when the guide hole is formed in the semi-cylindrical structure, the length of the guide hole should be smaller than or equal to the length of the second groove body, and meanwhile, the length of the transmission column 702 arranged on the driving portion 6 should also be smaller than or equal to the length of the guide hole, so as to avoid damaging the piston 3.

In this embodiment, the driving unit 6 mainly provides the rotational power for the rotation of the piston 3, and thus, the driving unit 6 may adopt two modes of direct driving and indirect driving. If a direct driving mode is adopted, the part of the driving part 6 which is finally output power needs to be fixed with the locking part 5, so that the rotating power generated by the driving part 6 can be directly transmitted to the locking part 5, and the piston 3 is driven to rotate by the rotation of the locking part 5. If the indirect driving mode is adopted, the final power output part of the driving part 6 and the locking part 5 need to be fixed in a switching mode, the rotating power is transmitted to the locking part 5 through the switching part, and the piston 3 is driven to rotate through the rotation of the locking part 5.

Specifically, the driving portion 6 may include: a transmission mechanism 7 and a driving mechanism 8; the rotational power provided by the driving mechanism 8 is transmitted to the locking part 5 through the transmission mechanism 7.

The transmission mechanism 7 may include: a transmission disc 701 and a plurality of transmission posts 702 arranged on the transmission disc 701; the transmission column 702 is engaged with a guide hole provided on the locking part 5 to transmit the rotational power provided by the driving mechanism 8 to the locking part 5. A transmission shaft is arranged below the transmission disc 701 and can be connected with a driving mechanism 8 through the transmission shaft, so that a driving mode of indirectly transmitting the rotating power to the locking part 5 through a transmission mechanism 7 is formed. Illustratively, 4 driving posts 702 arranged in an array are vertically fixed on the upper surface of the driving plate 701, and the lower surface of the driving plate 701 is provided with a driving shaft. When the transmission mechanism is used, a transmission shaft of the transmission disc 701 is directly or indirectly connected and fixed with the driving mechanism 8, so that the driving of the driving mechanism 8 and the transmission disc 701 is realized; the driving posts 702 on the driving disc 701 are respectively inserted into the guide holes in the two clasping mechanisms on the locking part 5 and fixed with the locking part 5, so that the linkage of the driving mechanism 7 and the locking part 5 is realized under the action of the rotating force provided by the driving mechanism 8. The guide hole of the locking portion 5 has been described in detail above, and will not be described in detail here. In addition, when the piston 3 and the tightening bolt 2 are completely separated, the clasping mechanism fixed with the piston 3 can fall onto the transmission mechanism 7, and the impact can cause impact damage to the transmission mechanism 7, so that in order to properly protect the transmission mechanism 7, an ultrathin jack 10 is arranged between 4 transmission columns 702 on the upper surface of the transmission disc 701, and the fallen clasping mechanism fixed with the piston 3 is buffered through the ultrathin jack 10, so that the transmission mechanism 7 is protected. The ultrathin jack 10 arranged on the transmission mechanism 7 has the other function that the height of the clasping mechanism fixed with the piston 3 is adjusted through the ultrathin jack 10, so that the piston 3 is close to or far away from the tension bolt 2, and the piston 3 is convenient to move, disassemble and assemble.

The drive mechanism 8 may include: a motor 801 and a speed reducer 802. The power output shaft of the motor 801 is connected to the power input shaft of the speed reducer 802, and after being adjusted to an appropriate speed by the speed reducer 802, the power output shaft of the speed reducer 802 serves as a rotational power output portion of the drive mechanism 8. The power output shaft of the speed reducer 802 and the transmission shaft of the transmission plate 701 can realize shaft-to-shaft connection through the adapter 9. Illustratively, the adaptor 9 may employ a coupling 902. The power output shaft of the speed reducer 802 and the transmission shaft of the transmission disc 701 are respectively connected by the coupler 902, so that the linkage of the power output shaft of the speed reducer 802 and the transmission shaft of the transmission disc 701 is realized.

In this embodiment, the driving unit 6 further includes: a second support part 11, the second support part 11 is used for supporting the ultra-thin jack 10, the thrust bearing 901, the coupling 902, and the locking part 5 and the piston 3 which fall on the ultra-thin jack when the valve cover 1 and the piston 3 are separated, in addition to supporting and carrying the driving mechanism 8 and the transmission mechanism 7. Specifically, the second support portion 11 may include: a first magazine 1101 and a second magazine 1102; the first frame 1101 is fixed above the second frame 1102; here, the first frame body 1101 and the second frame body 1102 may be assembled to the second support portion 11 by assembling parts, or may be integrally molded by, for example, casting. In the second support part 11, the first frame 1101 is mainly used for carrying the transmission mechanism 7, the ultra-thin jack 10, the thrust bearing 901, and the locking part 5 and the piston 3 which fall on the ultra-thin jack 10 when the valve cover 1 and the piston 3 are separated, and the three parts of weight are transferred to the first frame 1101 through the thrust bearing 901 for carrying; the second frame 1102 is mainly used for carrying the driving mechanism 8, and in addition, since the first frame 1101 is above the second frame 1102, the weight of all structures carried on the first frame 1101 and the weight of the structures themselves are further carried together by the second frame 1102.

For example, the second supporting portion 11 may be designed as a first bearing table, a second bearing table and a base which are stacked in sequence from top to bottom; a plurality of bearing columns are respectively fixed between the second bearing platform and the first bearing platform as well as between the second bearing platform and the base. The first bearing table, the second bearing table and the base are all of disc structures. A through hole is formed in the center of the first bearing table, so that a transmission shaft below the transmission disc 701 can penetrate through the through hole to be connected with the coupler 902, and in addition, the size of the through hole in the first bearing table is smaller than the outer diameter of the thrust bearing 901, so that the thrust bearing 901 cannot fall from the through hole in the first bearing table when in use; the upper surface of the first bearing table is also provided with a groove, and the groove can accommodate the thrust bearing 901 and the transmission disc 701; the first support stand and the fixed support column below the first support stand form a first frame 1101. A through hole is formed in the center of the second bearing table, so that a power output shaft of the speed reducer 802 can penetrate through the through hole to be connected with the coupler 902; the size of the through hole formed in the second bearing table can be larger than the outer diameter of the coupler 902, so that the coupler 902 can be conveniently assembled with the speed reducer 802 and the support column below the power disc.

In addition, in the actual assembly and disassembly process, the site used by the factory building is not necessarily completely flat, and may have a slight inclination angle, and meanwhile, in order to further match the first supporting portion 4 to adjust the height, angle, distance and other positional relationships of the assembly device, in the present scheme, a plurality of second adjusting mechanisms 1103 are added below the base of the second supporting portion 11, and the second supporting portion 11 is adjusted by the second adjusting mechanisms 1103 so as to match the first adjusting mechanisms 404 to perform the leveling operation on the assembly device. For example, the second adjusting mechanism 1103 may adopt a fine adjustment nut, a lifting column, or the like to adjust the height, angle, or distance, etc. of the second supporting portion 11.

One possible way of separating the valve cover 1 from the piston 3 using the assembly device is to level the assembly device with the first adjustment mechanism 404 and the second adjustment mechanism 1103 to ensure that the tension bolt 2 does not bend and risk breaking during the separation of the valve cover 1 from the piston 3. After leveling is finished, the valve cover 1 and the piston 3 assembly are lifted and moved to the position above the first supporting part 4; the valve cover 1 and the piston 3 are slowly descended to enable the piston 3 to penetrate through a through hole in the supporting platform 401 in the first supporting part 4, and the lifting equipment is released after the valve cover 1 and the piston 3 are stably placed on the supporting platform 401. The piston 3 is locked and fixed by the first clasping mechanism 501 and the second clasping mechanism 502 in the locking portion 5. Inserting the transmission post 702 of the transmission mechanism 7 in the driving part 6 into the guide hole in the clasping mechanism, after adjusting the height, sleeving the thrust bearing 901 on the support post below the transmission disc 701, placing the sleeved transmission mechanism 7 on the first frame body 1101 in the second supporting part 11, and connecting the support post with the power output shaft of the speed reducer 802 in the driving mechanism 8 assembled on the second supporting part 11 by using the coupler 902, thereby completing the assembly of the transmission mechanism 7 and the driving mechanism 8. After the assembly is finished, the motor 801 is started to rotate forward, the rotating speed is adjusted to a preset speed through the speed reducer 802, the power output shaft of the speed reducer 802 is linked with the transmission mechanism 7 through the coupler 902, and the transmission mechanism 7 rotates and simultaneously drives the locking part 5 fixed with the piston 3 to rotate, so that the piston 3 is separated from the tensioning bolt 2 fixed on the valve cover 1. After the piston 3 is completely separated from the tension bolt 2, the locking portion 5 to which the piston 3 is fixed drops on the ultra-thin jack 10 provided on the transmission mechanism 7 for buffering, and then the locking portion 5 to which the piston 3 is fixed and the transmission mechanism 7 transmit the weight to the second support portion 11 through the thrust bearing 901. By this, the separation operation of the valve cover 1 and the piston 3 is completed.

One possible way of mounting the valve closure 1 and the piston 3 using the mounting device is to level the mounting device with the first adjustment mechanism 404 and the second adjustment mechanism 1103 to ensure that the tension bolt 2 does not bend and risk breaking during the separation of the valve closure 1 and the piston 3. After leveling is finished, hoisting the valve cover 1 and moving the valve cover to the position above the first supporting part 4; and slowly descending the valve cover 1 to enable the tension bolt 2 to penetrate through a through hole in the supporting platform 401 in the first supporting part 4, and releasing the hoisting equipment after the valve cover 1 is stably placed on the supporting platform 401. The thrust bearing 901 is sleeved on the transmission shaft below the transmission disc 701, the transmission mechanism 7 after being sleeved is placed on the first frame body 1101 in the second supporting portion 11, and the support column is connected with the power output shaft of the speed reducer 802 in the driving mechanism 8 assembled on the second supporting portion 11 through the coupler 902, so that the assembly of the transmission mechanism 7 and the driving mechanism 8 is completed. After the equipment finishes, earlier carry out the primary installation operation, earlier remove fixed piston 3 to tensioning bolt 2 under promptly, with 3 pore pair piston 2's screw threads, adjust ultra-thin jack 10 above driving plate 701 simultaneously, make piston 3 be close to tensioning bolt 2 gradually, when piston 3 contacts tensioning bolt 2's screw thread, rotate earlier with manual mode and be fixed with piston 3's locking portion 5, make tensioning bolt 2 and piston 3's screw hole interlock, so far, the primary installation is accomplished. The motor 801 is turned on for reverse rotation, the rotation speed is adjusted to a predetermined speed through the speed reducer 802, the power output shaft of the speed reducer 802 is linked with the transmission mechanism 7 through the coupler 902, and the transmission mechanism 7 rotates and simultaneously drives the locking part 5 fixed with the piston 3 to rotate, so that the piston 3 is gradually installed on the tension bolt 2. After the piston 3 is completely separated from the tension bolt 2, the motor 801 is turned off, and the locking portion 5 is detached. By this point, the mounting operation of the bonnet 1 and the piston 3 is completed.

The present solution is further illustrated by the following examples.

The present embodiment describes an assembling apparatus by taking the separation and installation of the valve cover 1 of the explosion valve of the nuclear power plant and the piston 3 as an example shown in fig. 1. As shown in fig. 2 and 3, the fitting device mainly includes three parts: a first supporting part 4, a locking part 5 and a driving part 6; the piston 3 is locked and fixed by the locking portion 5, and the piston 3 is separated from the tension bolt 2 of the valve closure 1 placed on the first support portion 4 or the piston 3 is mounted to the tension bolt 2 of the valve closure 1 placed on the first support portion 4 by the rotation transmission cooperation of the locking portion 5 and the driving portion 6.

The first support section 4 is mainly composed of a support base 401, four support legs 402, and a first adjustment mechanism 404 disposed below the support legs 402. The 4 supporting legs 402 are uniformly fixed on the lower surface of the supporting platform 401, and each supporting leg 402 is fixed with the supporting platform 401 in an auxiliary mode through two reinforcing ribs 403. A first adjusting mechanism 404 is arranged below each support leg 402, and the height, the angle or the distance of the first support frame is adjusted through the first adjusting mechanism 404. Specifically, when the valve cover 1 is placed on the support base 401, the lower surface thereof may be closely attached to the upper surface of the support base 401. The piston 3 passes through a through hole in the support 401 and is suspended from the support 401. The support base 401 is balanced by 4 support legs 402 having an adjusting mechanism, and the level of the support base 401 is adjusted by an adjusting mechanism, so that the support base 401 is kept horizontal.

The locking part 5 is composed of two clasping mechanisms with the same structure and semi-cylindrical structures, and the two clasping mechanisms clamp the piston 3 in an encircling manner. The interior of the semi-cylindrical structure corresponds to the shapes of a piston head and a piston plate in the piston 3 structure and is provided with a first groove body and a second groove body; when the two semi-cylindrical structures are in encircling assembly, the shape of the formed complete groove body can be completely matched with the shape of the piston 3, so that the piston 3 cannot move in the enclasping mechanism when the enclasping mechanism clamps the piston 3. When the two clasping mechanisms are in encircling and splicing, the bolts penetrate through the mounting holes transversely arranged on the two clasping mechanisms to realize mounting and fixing. Set up four mounting holes on every mechanism of holding tightly, do not guarantee two mechanisms of holding tightly when carrying piston 3, the homogeneity of piston 3 atress can make two mechanisms of holding tightly fixed more firm simultaneously. Specifically, the two clasping mechanisms clamp the piston 3 therebetween and are connected and screwed by four bolts. Two enclasping mechanisms can adopt the lower plastics material of density such as nylon to alleviate its weight, make things convenient for the staff installation, and material materials such as nylon are softer simultaneously, can reduce the fish tail risk to staff or piston 3. The piston 3 can be driven to rotate through the clasping mechanism, and the piston 3 is lifted or descended under the action of the threads of the tensioning bolt 2, so that the purpose of separating or assembling the piston 3 and the valve cover 1 is achieved.

In addition, the semi-cylindrical structures of the two clasping mechanisms are provided with guide holes along the axial direction of the piston 3, and the guide holes can be matched with the transmission columns 702 arranged on the driving part 6 to complete the force transmission from the driving part 6 to the locking part 5. The copper bush 503 is installed in the guide hole, which not only can prevent the gap between the transmission column 702 and the guide hole from being too large, but also can avoid the abrasion of the transmission column 702 to the guide hole. Specifically, two through holes are respectively formed in the two clasping mechanisms, and the copper bush 503 is embedded in the through holes to form a guide hole together.

The drive section 6 mainly includes two portions: a transmission mechanism 7 and a drive mechanism 8. Wherein, drive mechanism 7 includes: a driving plate 701 and four driving posts 702 uniformly fixed on the upper surface of the driving plate 701. The transmission column 702 is inserted into a guide hole reserved on the clasping mechanism and fixed with the locking part 5, so that the linkage of the transmission mechanism 7 and the locking part 5 is realized under the action of the rotating force provided by the driving mechanism 8. A transmission shaft is fixed on the lower surface of the transmission disc 701 and can be fixed with the driving mechanism 8 so as to transmit the rotating power output by the driving mechanism 8; an ultra-thin jack 10 is arranged on the upper surface of the transmission disc 701 and between the transmission columns 702. Specifically, 4 transmission columns 702 are arranged on a transmission disc 701 of the transmission mechanism 7, the upper surface of the transmission disc 701 is placed on the ultrathin jack 10, the transmission columns 702 can be matched with copper bushes 503 in guide holes, the enclasping mechanism guides in the vertical direction, the piston 3 keeps perpendicular to the ground when moving downwards, and meanwhile, the rotation transmission of the driving mechanism 8 and the enclasping mechanism can be realized through the matching of the guide columns and the guide holes. The ultrathin jack 10 can start the buffering and bearing function on the falling clasping mechanism fixed with the piston 3 after the piston 3 is completely separated from the valve cover 1; when the piston 3 and the valve cover 1 are installed, the distance between the piston 3 and the tension bolt 2 can be increased or decreased by adjusting the height of the oil cylinder of the ultrathin jack 10, so that the piston 3 can be initially screwed on the tension bolt 2. The ultra-thin jack 10 can facilitate the transportation or installation of the piston 3

The drive mechanism 8 mainly includes: a motor 801 and a speed reducer 802; the power output shaft of the motor 801 is connected to the power input shaft of the speed reducer 802, and after being adjusted to an appropriate speed by the speed reducer 802, the power output shaft of the speed reducer 802 serves as a rotational power output portion of the drive mechanism 8. Since the speed reducer 802 outputs rotational power through the power output shaft in this example, in order to be linked with the transmission shaft below the transmission disc 701, two shaft structures need to be connected together through the coupler 902, so as to achieve shaft-to-shaft linkage. Specifically, the speed reducer 802 is fixed to the second frame body 1102 by screws, a power output shaft thereof is connected to a transmission shaft below the transmission disc 701 in the transmission mechanism 7 by a coupling 902, and a power input shaft thereof is connected to the motor 801. The speed reducer 802 can change the direction of the output shaft while outputting a force of high rotation speed and low torque of the motor 801 to a force of low rotation speed and high torque at a transmission ratio. For the selection of the motor 801, a servo motor with a low rotation speed and a large output torque can be selected according to the size and the weight of the piston 3, and the forward rotation or the reverse rotation of the piston 3 is realized by adjusting the rotation direction of the motor 801, so that the separation or the assembly of the valve cover 1 and the piston 3 is completed. It should be noted that the motor 801 needs to be provided with overload protection to avoid the risk of the motor burning or the tie bolt 2 being unscrewed.

The drive section 6 further includes: a second support portion 11; the second support 11 mainly serves as a load-bearing structure for the transmission 7, the drive 8 and other connecting or auxiliary structures. The second support 11 comprises two parts: a first magazine 1101 and a second magazine 1102; the first frame 1101 is fixed above the second frame 1102. The first frame 1101 mainly carries the transmission mechanism 7, and the locking portion 5 fixed with the piston 3 is loaded on the transmission mechanism 7 after the piston 3 is successfully separated. Specifically, the support structure may be used to support all the weights of the transmission mechanism 7, the driving mechanism 8, the coupling 902, the ultra-thin jack 10, and the thrust bearing 901, and also needs to support the weight of two clasping mechanisms fixed with the piston 3, which drop after the valve cover 1 is separated from the piston 3.

In this example, a thrust bearing 901 is sleeved on the transmission shaft below the transmission disc 701 in the transmission mechanism 7. The thrust bearing 901 sleeved on the transmission shaft can transmit the weight of the piston 3, the two clasping mechanisms, the transmission mechanism 7 and the ultrathin jack 10 to the bearing frame body of the driving part 6 after the two clasping mechanisms fixed with the piston 3 are completely separated from the valve cover 1. Meanwhile, the transmission mechanism 7 is ensured to smoothly rotate above the first frame 1101.

Further, a plurality of second adjustment mechanisms 1103 are provided on the lower surface of the second frame body 1102, and the second adjustment mechanisms 1103 are engaged with the first adjustment mechanisms 404 of the first support section 4 to adjust the height, angle, distance, and other positions of the second support section 11. Specifically, an adjusting mechanism is installed at the bottom of the support structure, and the adjusting mechanism is used for maintaining the horizontal state of the second supporting portion 11, so that the piston 3 is maintained in a state perpendicular to the ground when moving up and down, and the risk of being locked or twisting off the tension bolt 2 is avoided.

In this example, the assembly of the valve cover 1 and the piston 3 is removed from the body of the explosion valve, and then placed on the support base 401 by a traveling crane. The first clasping mechanism 501 and the second clasping mechanism 502 are mounted on the piston 3 by surrounding four bolts. Then, 4 driving columns 702 on the driving mechanism 7 are correspondingly inserted into the copper bushings 503 in the first clasping mechanism 501 and the second clasping mechanism 502. The transmission mechanism 7 is rotated by the motor 801, and the two clasping mechanisms fixed with the pistons 3 are driven to rotate. The piston 3 moves downwards under the action of the thread of the tension bolt 2, and meanwhile, 4 transmission columns 702 in the transmission mechanism 7 are matched with the copper bush 503 in the guide hole, so that the piston 3 is further ensured to always keep moving downwards vertically to the ground. After the tightening bolt 2 is completely separated from the matching threads of the piston 3, the two clasping mechanisms and the transmission mechanism 7 fixed with the piston 3 are firstly contacted with the ultrathin jack 10 arranged on the transmission disc 701 in the transmission mechanism 7, and then the weight is transmitted to the second supporting part 11 through the thrust bearing 901. At this time, the separation of the valve cap1 from the piston 3 is completed.

When the valve cover 1 and the piston 3 are installed, the two holding devices fixed with the piston 3 are slowly jacked up by using the ultrathin jack 10 arranged on the transmission disc 701 in the transmission mechanism 7, and meanwhile, the transmission mechanism 7 is manually rotated in the reverse direction, so that the tensioning bolt 2 is meshed with the threads of the piston 3. After the engaged threads have a certain length, the motor rotates reversely to indirectly drive the piston 3 to rotate, and under the action of the threads, the piston 3 moves upwards and finally contacts with the valve cover 1 to finish the assembly.

To sum up, this scheme can realize separating blasting valve gap 1 and piston 3 and assemble, improves valve gap 1 and piston 3's dismouting efficiency. This scheme can reduce or save the use of large-scale lifting device such as driving, suspender during the operation, simultaneously, reduces substantially labour cost. This scheme can effectively avoid valve gap 1 and 3 separation of piston and equipment in-process 2 crooked and fracture risks of tie bolt.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.