Bolt rotation measuring tool and manhole cover dismounting and mounting structure

Abstract

The utility model belongs to the technical field of nuclear power maintenance equipment, and discloses a bolt rotation measuring tool and a manhole cover dismounting and mounting structure. The bolt rotation measuring tool is used for assembling or disassembling a fastening piece and an external piece which are in threaded fit, the bolt rotation measuring tool comprises a planetary gear mechanism, the planetary gear mechanism comprises a sun gear, a planet carrier, a gear ring, a connecting piece and a plurality of planet gears, the gear ring is coaxially sleeved with the sun gear, each planet gear is meshed between the sun gear and the gear ring, and the connecting piece is connected with the sun gear. The sun gear is used for being in transmission connection with a driving piece, the sun gear and the multiple planet gears are all rotationally connected to the planet carrier, the gear ring is in transmission connection with each connecting piece, the gear ring can drive each connecting piece to rotate around the axis of the gear ring, the multiple connecting pieces are used for being in one-to-one corresponding inserted connection with the multiple fasteners, and the connecting pieces can drive the corresponding fasteners to rotate. According to the bolt rotation measuring tool, the plurality of connecting pieces are in transmission connection with the gear ring, so that the plurality of fastening pieces rotate synchronously, and the disassembly and assembly efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to nuclear power overhauls equipment technical field especially relates to a bolt rotation measuring tool and manhole cover dismounting structure. BACKGROUND

[0002] Bolt is mainly used as fastener with nut, is the indispensable part in daily life and industrial production and manufacture. For example, nuclear power station carries out the process of steam generator, stabilizer, core water tank, injection tank and other equipment's overhaul, all need to carry out manhole switch cover operation. When operating, if need open or close manhole cover plate, need to rotate manhole cover bolt, and ensure that the exposed length of each bolt is consistent. If manual complete manhole cover bolt's installation and removal work, measure the exposed length of bolt operation time is long, easy to appear misjudgment, and the operator is easy to receive high dose radiation.

[0003] In prior art, a quick-change fastening bolt is automatically loosened or tightened through planetary gear mechanism. However, the device cannot loosen or tighten multiple bolts simultaneously. CONTENT OF THE UTILITY MODEL

[0004] The utility model discloses a bolt rotation measuring tool and manhole cover dismounting structure, the bolt rotation measuring tool can screw multiple fasteners simultaneously.

[0005] To achieve this purpose, the utility model adopts the following technical scheme:

[0006] On the one hand, a bolt rotation measuring tool is provided, which is used for assembling or disassembling threaded fasteners and external parts. The bolt rotation measuring tool includes a planetary gear mechanism, which includes a sun gear, a planet carrier, a ring gear and a plurality of planet gears. The ring gear is coaxially sleeved in the sun gear. Each planet gear is meshed between the sun gear and the ring gear. The sun gear is used for transmission connection with a driving member. The sun gear and the plurality of planet gears are both rotationally connected to the planet carrier. Each planet gear can rotate around its own center line, and the plurality of planet gears all revolve around the sun gear. The bolt rotation measuring tool further includes a plurality of connecting members. The ring gear is in transmission connection with each connecting member, and the ring gear can drive each connecting member to rotate around its own axis. The plurality of connecting members are used for one-to-one corresponding insertion with the plurality of fasteners, and the connecting member can drive the corresponding fastener to rotate.

[0007] As a preferred, the ring gear includes a fixedly connected inner ring gear and an outer ring gear. The inner ring gear and the outer ring gear are coaxially arranged. The plurality of planet gears are all meshed with the inner ring gear. The plurality of connecting members are spaced apart along the circumferential direction of the ring gear. The connecting member includes a gear part and an insertion part. The gear part is meshed with the outer ring gear. The insertion part is used for insertion with the corresponding fastener and drives the fastener to rotate.

[0008] As preferred, the structure of each connector is the same, and the connectors of the plurality of connecting members are used to connect with one end of the fasteners, and the one end of the fasteners is located on the first plane.

[0009] As preferred, the bolt rotation measuring tool further comprises a support partition plate, the support partition plate is used to be arranged between the gear ring and the external member, the support partition plate is provided with a plurality of guide holes, and the plurality of guide holes are used to be sleeved on the fasteners one by one.

[0010] As preferred, the bolt rotation measuring tool further comprises a plurality of support rods, the plurality of support rods are uniformly distributed along the circumference of the support partition plate, one end of the support rod is fixedly connected to the support partition plate, and the other end of the support rod is used to be detachably connected to the external member.

[0011] As preferred, the end of the support rod used to be connected with the external member is provided with a magnetic member, and the magnetic member can be magnetically attracted to the external member.

[0012] As preferred, the bolt rotation measuring tool further comprises a scale ruler, and the scale ruler is used to measure the distance between one end of the fastener connected with the connecting member and the external member or the support partition plate.

[0013] As preferred, one end of the scale ruler is fixedly connected with the support partition plate, and the other end of the scale ruler is arranged in a suspended manner.

[0014] On the other hand, a manhole cover dismounting structure is provided, wherein the manhole cover dismounting structure comprises a manhole cover, a plurality of fasteners and the bolt rotation measuring tool of any one of the technical solutions, the fasteners are bolts, the manhole cover is provided with a plurality of threaded holes at intervals in the circumference, the plurality of connecting members of the bolt rotation measuring tool and the plurality of bolts are one-to-one matched in a threaded manner, the plurality of bolts and the plurality of threaded holes are one-to-one matched in a threaded manner, and the gear ring can drive the plurality of connecting members to rotate, so that the plurality of bolts are synchronously screwed into or screwed out of the corresponding threaded holes.

[0015] As preferred, the end surface of the manhole cover is perpendicular to the screwing-in or screwing-out direction of the bolt.

[0016] The bolt rotation measuring tool has the advantages that the bolt rotation measuring tool is provided, the plurality of connecting members are drivingly connected with the gear ring, the plurality of fasteners are synchronously rotated, and the dismounting efficiency is improved.

[0017] The manhole cover dismounting structure can be used to synchronously tighten or loosen the plurality of bolts by the bolt rotation measuring tool, the manhole cover can be quickly dismounted, and the dismounting efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is the first perspective axonometric view of the bolt rotation measuring tool provided by the utility model;

[0019] Figure 2Is the second perspective axonometric drawing of the bolt rotation measuring tool provided by the utility model;

[0020] Figure 3 Is the axonometric drawing of the manhole cover dismounting structure provided by the utility model;

[0021] Figure 4 Is the front view of the manhole cover dismounting structure provided by the utility model;

[0022] Figure 5 Is the schematic view of the manhole cover of the manhole cover dismounting structure provided by the utility model.

[0023] In the drawing,

[0024] 1, fastener;

[0025] 2, external part; 21, threaded hole; 22, end face;

[0026] 3, planetary gear mechanism; 31, sun gear; 32, planet carrier; 33, ring gear; 34, planet gear;

[0027] 4, connecting piece; 41, gear part; 42, plug-in part;

[0028] 5, support partition; 51, guide hole;

[0029] 6, support rod; 61, magnetic attraction piece;

[0030] 7, scale. DETAILED DESCRIPTION

[0031] The utility model will be further described in detail below in combination with the drawings and examples. It can be understood that the specific examples described herein are only used to explain the utility model, and not limited to the utility model. In addition, it should be noted that, in order to facilitate the description, only the part related to the utility model is shown in the drawing, not all structures.

[0032] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication inside two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0033] In the utility model, unless another definite provision and limitation, first feature is "on" or "under" second feature can include that first and second features are in direct contact, also can include that first and second features are not in direct contact but contact through other feature between them. Moreover, first feature "on", "above" and "upper surface" of second feature includes that first feature is directly above and obliquely above second feature, or only indicates that horizontal height of first feature is higher than second feature. First feature "under", "below" and "under surface" of second feature includes that first feature is directly below and obliquely below second feature, or only indicates that horizontal height of first feature is less than second feature.

[0034] In the description of the present embodiment, the terms "upper", "lower", "right", "left", "horizontal", "vertical", and other orientation or position relationships are based on the orientation or position relationships shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0035] In one aspect, referring to Figures 1 to 5 The utility model provides a bolt rotation measuring tool for assembling or disassembling threaded fastener 1 and external part 2, which comprises a planetary gear mechanism 3, the planetary gear mechanism 3 includes sun gear 31, planet carrier 32, ring gear 33 and a plurality of planet gears 34, the ring gear 33 is coaxially sleeved in the sun gear 31, each planet gear 34 is engaged between the sun gear 31 and the ring gear 33, the sun gear 31 is used for transmission connection with the driving piece, the sun gear 31 and a plurality of planet gears 34 are all rotationally connected to the planet carrier 32, each planet gear 34 can autorotate around its center line, and a plurality of planet gears 34 all revolve around the sun gear 31, the bolt rotation measuring tool further comprises a plurality of connecting pieces 4, the ring gear 33 is transmissionally connected with each connecting piece 4, and the ring gear 33 can drive each connecting piece 4 to rotate around its axis, the plurality of connecting pieces 4 are used for one-to-one correspondingly inserting with the plurality of fasteners 1, and the connecting piece 4 can drive the corresponding fastener 1 to rotate. By setting this way, the bolt rotation measuring tool drives the sun gear 31 to rotate through the driving piece, the sun gear 31 drives the ring gear 33 to rotate and drives the plurality of connecting pieces 4 to rotate, each connecting piece 4 is inserted and matched with the corresponding fastener 1 and drives the corresponding fastener 1 to rotate into or rotate out of the external part 2. The plurality of connecting pieces 4 are transmissionally connected with the ring gear 33, so that the plurality of fasteners 1 can rotate synchronously without rotating the fasteners 1 one by one, and the dismounting efficiency of the external part 2 is improved.

[0036] Specifically, the bolt rotation measuring tool further comprises a mounting seat, the sun gear 31, the planet carrier 32 and the ring gear 33 are all rotationally connected with the mounting seat, and each connecting piece 4 is also rotationally connected with the mounting seat.

[0037] Optionally, please refer to Figure 1 and Figure 2 , the ring gear 33 comprises a fixedly connected inner ring gear and an outer ring gear, the inner ring gear and the outer ring gear are coaxially arranged, the plurality of planet gears 34 are all engaged with the inner ring gear, the plurality of connecting pieces 4 are spaced apart along the circumference of the ring gear 33, the connecting piece 4 comprises a gear part 41 and a plug-in part 42, the gear part 41 is engaged with the outer ring gear, and the plug-in part 42 is used for plugging and rotating the fastener 1. Preferably, the plug-in part 42 is a hexagonal sleeve, which is matched with the hexagonal fastener 1. In this way, the sun gear 31 drives the inner ring gear to rotate through the planet gears 34, the inner ring gear drives the outer ring gear to rotate synchronously through the fixed connection with the outer ring gear, and then drives the plurality of connecting pieces 4 engaged with the outer ring gear to rotate, and the plug-in part 42 of the plurality of connecting pieces 4 is plugged with the corresponding fastener 1 to drive the plurality of fasteners 1 to rotate simultaneously. Avoiding rotating the fastener 1 one by one reduces the disassembly efficiency.

[0038] In other embodiments, the plug-in part 42 can also be a hexagonal wrench matched with the hexagonal countersunk fastener 1, and the specific structure of the plug-in part 42 can be selected according to the type of the fastener 1 actually rotated, and the embodiment and the drawing are only examples.

[0039] Optionally, the structures of the plug-in parts 42 are the same, and the ends of the plug-in parts 42 of the plurality of connecting pieces 4 for plugging with the fastener 1 are all located in the first plane (as shown by S1 in Figure 4 ). Preferably, the first plane is arranged in parallel with the end surface 22 of the external part 2. In this way, it can be ensured that the ends of the plurality of fasteners 1 for plugging with the plug-in parts 42 are located in the same plane after being rotated.

[0040] Optionally, please refer to Figures 1 to 3 , the bolt rotation measuring tool further comprises a support partition plate 5, the support partition plate 5 is used for being arranged between the ring gear 33 and the external part 2, the support partition plate 5 is provided with a plurality of guide holes 51, and the plurality of guide holes 51 are used for being sleeved on the fastener 1 one by one. In this way, the fastener 1 is threadedly matched with the external part 2, needs to be sequentially arranged in the sleeve hole of the plug-in part 42, the guide hole 51 and the threaded hole 21 of the external part 2, and the arrangement of the guide hole 51 limits the direction of the fastener 1 being screwed in and out, so as to ensure that the direction of the plurality of fasteners 1 being screwed in and out can be kept stable when the plurality of connecting pieces 4 drive the plurality of fasteners 1 to rotate.

[0041] Optionally, please refer to Figure 3The bolt rotation measuring tool further comprises a plurality of support rods 6, which are evenly distributed along the circumference of the support partition plate 5, one end of each support rod 6 is fixedly connected to the support partition plate 5, and the other end of each support rod 6 is used to detachably connect to the external part 2. In this way, the support partition plate 5 is arranged in the center relative to the fastener 1, which can further improve the stability of the support partition plate 5 during guiding.

[0042] In other embodiments, a support block can also be arranged between the ring gear 33 and the external part 2, a plurality of guide holes 51 are arranged on the support block, and the plurality of guide holes 51 are used to be fitted on the plurality of fasteners 1 one by one.

[0043] Optionally, referring to Figure 1 and Figure 2 , the end of the support rod 6 used to connect to the external part 2 is provided with a magnetic member 61, and the magnetic member 61 can be magnetically attracted to the external part 2. In this way, the support partition plate 5 can be conveniently disassembled from the external part 2.

[0044] Optionally, the bolt rotation measuring tool further comprises a scale 7, which is used to measure the distance between the end of the fastener 1 inserted into the connecting piece 4 and the external part 2 or the support partition plate 5. In this way, by calibrating the scale of the scale 7, it is convenient to observe whether the fastener 1 is screwed to the right position during the screwing process, which avoids the operator from measuring while screwing and improves the installation efficiency.

[0045] Optionally, one end of the scale 7 is fixedly connected to the support partition plate 5, and the other end of the scale 7 is arranged in a suspended manner. In this way, the bolt rotation measuring tool can adjust the length of the external part 2 end surface 22 exposed by the fastener 1 according to different assembly requirements, so that the bolt rotation measuring tool can be applied to the structure of disassembling various fasteners 1, thereby increasing the application range of the bolt rotation measuring tool. In other embodiments, one end of the scale 7 is mounted on a mounting seat, and the other end of the scale 7 is arranged in a suspended manner. During the process of screwing the fastener 1 into the external part 2, the operator observes the scale of the scale 7 at the support partition plate 5 through the scale 7, and when the value reaches a specified value, it can be determined that the length of the external part 2 end surface 22 exposed by each fastener 1 reaches a specified size.

[0046] On the other hand, referring to Figures 3 to 5The manhole cover dismounting structure comprises a manhole cover, a plurality of fasteners 1 and the bolt rotation measuring tool, the fastener 1 is a bolt, the manhole cover is circumferentially spaced apart with a plurality of threaded holes 21, the plurality of connecting pieces 4 of the bolt rotation measuring tool and the plurality of bolts are one-to-one correspondingly inserted and fitted, the plurality of bolts and the plurality of threaded holes 21 are one-to-one correspondingly threaded, and the gear ring 33 can drive the plurality of connecting pieces 4 to rotate, so that the plurality of bolts are synchronously screwed into or out of the corresponding threaded holes 21. In this way, when the manhole cover is installed, the bolt is inserted into the corresponding threaded hole 21 of the manhole cover, each bolt is inserted with the corresponding connecting piece 4, the connecting piece 4 is engaged with the outer gear ring, the sun gear 31 is drivingly connected with the inner gear ring through the plurality of planet gears 34, and then the outer gear ring is driven to rotate, the plurality of connecting pieces 4 are rotated to drive the bolt to be screwed into the threaded hole 21, and the installation of the manhole cover is realized. When the manhole cover needs to be dismounted, the sun gear 31 is reversely driven, so that the bolt is screwed out, and then the manhole cover is dismounted.

[0047] Optionally, the end surface 22 of the manhole cover is perpendicular to the screwing-in or screwing-out direction of the bolt. In this way, it is ensured that the plane in which the end of the plurality of bolts for being inserted with the insertion part 42 after being screwed is parallel to the end surface 22 of the manhole cover, that is, the length of the part of the plurality of bolts between the two planes after being screwed is the same.

[0048] In other embodiments, the fastener 1 can also be a screw rod, and the external part 2 is a mechanical equipment or a building structure; or the fastener 1 can also be a nut, and the external part 2 is a bolt or a screw rod, etc. The number of fasteners 1 is designed according to the installation needs of the external part 2, for example, according to the number of threaded holes 21 in the external part 2, the same number of fasteners 1 and connecting pieces 4 are selected to be inserted and fitted, and the planetary gear mechanism 3 is used to screw the fastener 1.

[0049] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not a limitation on the embodiments of the utility model. For ordinary skilled persons in the art, various obvious changes, re-adjustments and replacements can be made without departing from the protection scope of the utility model. Here, it is not necessary and impossible to enumerate all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A bolt rotation measuring tool for assembling or disassembling a threadedly engaged fastener (1) and an external member (2), the bolt rotation measuring tool comprising a planetary gear mechanism (3) including a sun gear (31), a planet carrier (32), a ring gear (33) coaxially sleeved in the sun gear (31), and a plurality of planet gears (34) engaged between the sun gear (31) and the ring gear (33), the sun gear (31) being configured to be drivingly connected with a driving member, the sun gear (31) and the plurality of planet gears (34) each being rotationally connected to the planet carrier (32), each of the planet gears (34) being capable of rotating around its own center line, and the plurality of planet gears (34) each being capable of revolving around the sun gear (31), characterized in that, The bolt rotation measuring tool further comprises a plurality of connecting members (4), the gear ring (33) is in driving connection with each connecting member (4), and the gear ring (33) can drive each connecting member (4) to rotate around its own axis, the plurality of connecting members (4) are used for being inserted into the plurality of fasteners (1) one by one, and the connecting member (4) can drive the corresponding fastener (1) to rotate.

2. The bolt rotation measurement tool of claim 1, wherein, The gear ring (33) comprises a fixedly connected inner gear ring and an outer gear ring, the inner gear ring and the outer gear ring are coaxially arranged, the plurality of planetary gears (34) are all in meshing connection with the inner gear ring, the plurality of connecting members (4) are spaced apart along the circumference of the gear ring (33), the connecting member (4) comprises a gear part (41) and an insertion part (42), the gear part (41) is in meshing connection with the outer gear ring, and the insertion part (42) is used for being inserted into and driving the corresponding fastener (1) to rotate.

3. The bolt rotation measurement tool of claim 2, wherein, The structures of the insertion parts (42) are the same, and the ends, at which the insertion parts (42) of the plurality of connecting members (4) are used for being inserted into the fasteners (1), are located on a first plane.

4. The bolt rotation measurement tool of claim 1, wherein, The bolt rotation measuring tool further comprises a support partition plate (5), the support partition plate (5) is used for being arranged between the gear ring (33) and the external member (2), the support partition plate (5) is provided with a plurality of guide holes (51), and the plurality of guide holes (51) are used for being sleeved on the plurality of fasteners (1) one by one.

5. The bolt rotation measurement tool of claim 4, wherein, The bolt rotation measuring tool further comprises a plurality of support rods (6), the plurality of support rods (6) are uniformly distributed along the circumference of the support partition plate (5), one end of the support rod (6) is fixedly connected to the support partition plate (5), and the other end of the support rod (6) is used for being detachably connected to the external member (2).

6. The bolt rotation measurement tool of claim 5, wherein, The end, at which the support rod (6) is used for being connected to the external member (2), is provided with a magnetic member (61), and the magnetic member (61) can be magnetically attracted to the external member (2).

7. The bolt rotation measurement tool of claim 6, wherein, The bolt rotation measuring tool further comprises a scale (7), the scale is used for measuring the distance between the end, at which the fastener (1) is inserted into the connecting member (4), and the external member (2) or the support partition plate (5).

8. The bolt rotation measurement tool of claim 7, wherein, One end of the scale (7) is fixedly connected to the support partition plate (5), and the other end of the scale is suspended.

9. A manhole cover dismounting structure characterized by comprising: The manhole cover dismounting structure comprises a manhole cover, a plurality of fasteners (1) and the bolt rotation measuring tool of any one of claims 1-8, the fastener (1) is a bolt, the manhole cover is provided with a plurality of threaded holes (21) spaced apart along the circumference, the plurality of connecting members (4) of the bolt rotation measuring tool and the plurality of bolts are inserted and matched one by one, the plurality of bolts and the plurality of threaded holes (21) are threadedly matched one by one, and the gear ring (33) can drive the plurality of connecting members (4) to rotate, so that the plurality of bolts are synchronously screwed into or screwed out of the corresponding threaded holes (21).

10. The manhole cover assembly of claim 9, wherein: The end surface (22) of the manhole cover is perpendicular to the screwing-in or screwing-out direction of the bolt.

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