Quick pre-tightening device for wind power foundation anchor bolt nut

Abstract

The utility model relates to the technical field of nut pre-tightening, in particular to a wind power foundation anchor bolt nut quick pre-tightening device which comprises a plurality of fastening sets, the fastening sets are connected through connecting assemblies, each fastening set comprises two fastening pieces, and the two fastening pieces are connected through a connecting assembly. Wherein the upper end of one fastener is sleeved with a left sliding seat, the side edge of the left sliding seat is provided with a left sliding sleeve, the upper end of the other fastener is sleeved with a right sliding seat, the side edge of the right sliding seat is provided with a right sliding sleeve, and the left sliding sleeve and the right sliding sleeve are in mutual sliding sleeve connection. The multiple fastening sets are connected through the connecting assemblies, so that the sleeves of the multiple fastening assemblies rotate at the same time, multiple nuts are pre-tightened at the same time, the nuts are pre-tightened quickly, the working efficiency is improved, and the construction period is shortened.

Description

TECHNICAL FIELD

[0001] The utility model relates to wind power installation pre -tightening technical field especially relates to a wind power foundation anchor bolt nut quick pre -tightening device. BACKGROUND

[0002] In the wind turbine foundation construction process, anchor bolt assembly installation is a crucial process, and the nut of the anchor bolt needs to be pre -tightened during installation. Each wind turbine foundation requires pre -tightening of up to 240 anchor bolts, with a length of 5.5 meters and a weight of more than 80 kilograms. The construction conditions in the Gobi desert are poor, and the wind and sand are large. Small particle sand dust adheres to the anchor bolt thread, and the conventional wrench needs to be tightened with a large torque and needs to be knocked to ensure that the nut enters the specified thread position. The above factors not only cause long time consumption, but also the work load is very large.

[0003] New energy project has a shorter construction period, and efficiency is particularly important. A new tool is urgently needed to replace the conventional wrench tightening operation, which is simple and repetitive, to reduce the workload and improve construction efficiency. UTILITY MODEL CONTENT

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a wind power foundation anchor bolt nut quick pre -tightening device, which can simultaneously pre -tighten multiple nuts and improve work efficiency.

[0005] The technical scheme adopted by the utility model is as follows: a wind power foundation anchor bolt nut quick pre -tightening device, comprising a plurality of fastening groups, the fastening groups are connected through connecting assemblies, each fastening group comprises two fasteners, and the two fasteners are also connected through connecting assemblies.

[0006] One of the fasteners is provided with a left sliding seat at the upper end, and the left sliding seat is provided with a left sliding sleeve at the side. The other fastener is provided with a right sliding seat at the upper end, and the right sliding seat is provided with a right sliding sleeve at the side. The left sliding sleeve and the right sliding sleeve are slidably connected.

[0007] Further, the connecting assembly comprises a concave rod and a convex rod, one end of the concave rod is provided with a sliding groove, a sliding rod is slidably connected in the sliding groove, the sliding rod is fixedly arranged at one end of the convex rod, and the sliding groove and the sliding rod are both rectangular.

[0008] The concave rod and the convex rod are connected with universal joints at the ends away from each other. The universal joints are provided with radial fixing pins at both ends, and the fixing pins are provided with snap rings outside.

[0009] Further, the fastener comprises a power cover, an input rotating rod is rotatably arranged in the power cover, a sleeve is connected to the lower end of the input rotating rod, a hexagonal groove is arranged at the end of the sleeve away from the input rotating rod, a connecting groove is arranged at the other end of the sleeve, and the end of the input rotating rod is inserted into the connecting groove.

[0010] Further, the circumferential outer surface of the lower end of the input rotating rod is uniformly provided with a plurality of axially arranged driving grooves, and the upper side of the driving grooves is provided with a circumferentially arranged positioning groove.

[0011] Further, three fastening channels are arranged side by side on the side surface of the sleeve, a fastening stud is threadedly connected in each fastening channel, the end of the fastening stud abuts against a spring, the end of the spring away from the fastening stud abuts against a ball, and the ball abuts against a check ring at the end of the fastening channel.

[0012] The ball abutting against the positioning groove is a positioning ball, and the two balls abutting against the driving grooves are driving balls.

[0013] Further, the input rotating rod is sleeved with oppositely arranged upper and lower bevel gears, the positioning sleeve is sleeved on the input rotating rod and abuts between the upper and lower bevel gears,

[0014] The lower side of the lower bevel gear abuts against the upper side of the positioning ring of the input rotating rod, the lower side of the positioning ring rotates and abuts against the ring groove of the lower check ring, the upper side of the lower check ring is bolted to the power cover, and the inner side of the upper end of the power cover abuts against the upper side of the upper bevel gear.

[0015] Further, the lower side of the upper bevel gear is meshingly connected with the left small bevel gear, the left small bevel gear is coaxially fixedly connected with the left output rod, the left output rod is rotationally connected to the power cover, the upper side of the lower bevel gear is meshingly connected with the right small bevel gear, the right small bevel gear is coaxially fixedly connected with the right output rod, and the right output rod is rotationally arranged on the power cover; the left output rod and the right output rod are arranged in parallel and in the same plane.

[0016] Further, the upper end of the input rotating rod is provided with a quadrangular prism.

[0017] Further, a long sleeve assembly is arranged in the hexagonal groove of the sleeve, the long sleeve assembly comprises a connecting portion, the connecting portion is hexagonal, a blind hole is arranged at the top end of the connecting portion, a magnet is arranged in the blind hole, the upper end of the magnet abuts against a check disc, the magnet and the check disc are penetrated by a fastening screw, the fastening screw fastens the magnet and the check disc in the blind hole, and the connecting portion is slidably inserted into the hexagonal groove of the sleeve.

[0018] Further, a cylindrical portion is arranged at the lower end of the connecting portion, a cylindrical groove is coaxially arranged in the cylindrical portion, the lower end of the cylindrical groove is communicated with a hexagonal groove, the cylindrical groove and the hexagonal groove are penetrated through the side surface of the cylindrical portion, a limiting flange is arranged at the lower side of the hexagonal groove, and the limiting flange is used for clamping a nut on an anchor bolt in the hexagonal groove.

[0019] The beneficial effects achieved by the utility model are as follows: the connecting assembly is arranged between the plurality of fastening assemblies, so that the sleeves of the plurality of fastening assemblies are simultaneously rotated, the plurality of nuts are simultaneously pre-tightened, the nuts are rapidly pre-tightened, the working efficiency is improved, and the construction period is shortened. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the whole structure schematic view of the first embodiment of the utility model;

[0021] Figure 2 It is the connecting assembly structure schematic view of the utility model;

[0022] Figure 3 It is the fastening group structure schematic view of the utility model;

[0023] Figure 4 It is the fastening group partial explosion structure schematic view of the utility model.

[0024] Figure 5 It is the fastener structure schematic view of the utility model;

[0025] Figure 6 It is the fastener explosion state structure schematic view of the utility model;

[0026] Figure 7 It is the input rotary lever structure schematic view of the utility model;

[0027] Figure 8 It is the sleeve section view structure schematic view of the utility model;

[0028] Figure 9 It is the long sleeve assembly use state structure schematic view of the second embodiment of the utility model;

[0029] Figure 10 It is the long sleeve assembly explosion state structure schematic view of the second embodiment of the utility model;

[0030] Figure 11 It is the anchor bolt and nut installation state structure schematic view of the second embodiment of the utility model.

[0031] Wherein, 1 fastening group, 11 left slide seat, 111 left slide sleeve, 12 right slide seat, 121 right slide sleeve;

[0032] 2 connecting assembly, 21 recessed rod, sliding groove 211, 22 protruding rod, sliding rod 221, 23 universal joint, 231 fixed pin, 232 snap ring;

[0033] 3 fastener, 31 sleeve, 311 fastening channel, 312 connecting groove, 313 fastening stud, 314 spring, 315 positioning ball, 316 drive ball, 317 check ring, 318 hexagonal groove;

[0034] 32 power cover, 321 lower check ring, 323 ring groove;

[0035] 33 input rotary lever, 331 positioning sleeve, 332 upper bevel gear, 333 lower bevel gear, 334 quadrangular prism, 335 positioning ring, 336 positioning groove, 337 drive groove;

[0036] 34 left output rod, 341 left small bevel gear, 35 right output rod, 351 right small bevel gear.

[0037] 4 long sleeve assembly, 41 connecting part, 411 blind hole, 42 magnet, 43 baffle disc, 44 fastening screw, 45 cylindrical part, 451 cylindrical groove, 452 hexagonal groove, 453 limiting flange;

[0038] 5 anchor rod, 51 nut. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0040] Embodiment one:

[0041] As Figures 1-9 shown, the utility model provides a kind of wind power foundation anchor bolt nut quick pre-tightening device, including multiple fastening groups 1, fastening group 1 is connected by connecting assembly 2 between, connecting assembly 2 can be bent, can transmit power and adjust the distance and relative position between fastening group 1, the quantity of fastening group 1 and connecting assembly 2 can be set according to the quantity of nut to be pre-tightened, each fastening group 1 includes two fasteners 3, two fasteners 3 are also connected by connecting assembly 2 between, connecting assembly 2 is used to transmit power and adjust the distance between two fasteners 3;

[0042] Referring to Figure 4 , one fastener 3 upper end is sleeved with left slide 11, left slide 11 side is provided with left slide sleeve 111, another fastener 3 upper end is sleeved with right slide 12, right slide 12 side is provided with right slide sleeve 121, left slide sleeve 111 and right slide sleeve 121 are mutually slidably sleeved, the relative positioning of two fasteners 3 is realized by the mutual slidably sleeving of left slide sleeve 111 and right slide sleeve 121, prevent two fasteners 3 from producing autorotation when being driven by electric tool, and cannot normally work.

[0043] Further, referring to Figure 2 , connecting assembly 2 includes recessed rod 21 and convex rod 22, recessed rod 21 one end is provided with sliding groove 211, sliding groove 211 is slidably connected with sliding rod 221, sliding rod 221 is fixedly arranged at one end of convex rod 22, and sliding groove 211 and sliding rod 221 are both rectangular;

[0044] The recessed rod 21 and the convex rod 22 are connected with the universal joint 23 at the ends away from each other, the universal joint 23 is provided with the radial fixing pin 231 at both ends, the outer side of the fixing pin 231 is sleeved with the clamping ring 232, the fixing pin 231 is fixed by the clamping ring 232, and the fixing pin 231 is used for fixed connection of the universal joint 23 with other components, for example, connection with the recessed rod 21 and the convex rod 22.

[0045] Further, referring to Figures 5-8 The fastener 3 comprises a power cover 32, an input rotating rod 33 is arranged in the power cover 32, the lower end of the input rotating rod 33 is connected with the sleeve 31, the end of the sleeve 31 away from the input rotating rod 33 is provided with a hexagonal groove 318, the other end of the sleeve 31 is provided with a connecting groove 312, the end of the input rotating rod 33 is inserted into the connecting groove 312, the hexagonal groove 318 is used for sleeving on the nut to be fastened, and the sleeve 31 is driven to rotate by the input rotating rod 33, so that the nut is fastened.

[0046] Further, referring to Figure 6 and Figure 7 The circumferential outer surface of the lower end of the input rotating rod 33 is uniformly provided with a plurality of axially arranged driving grooves 337, the upper side of the driving groove 337 is provided with a circumferentially arranged positioning groove 336, the positioning groove 336 is used for realizing the axial relative positioning between the input rotating rod 33 and the sleeve 31, and the driving groove 337 is used for realizing the circumferential relative positioning between the input rotating rod 33 and the sleeve 31.

[0047] Further, referring to Figure 6 and Figure 8 The sleeve 31 is provided with three fastening channels 311 in parallel on the side, the fastening stud 313 is threadedly connected in each fastening channel 311, the end of the fastening stud 313 abuts against the spring 314, the end of the spring 314 away from the fastening stud 313 abuts against the ball, the ball abuts against the check ring 317 at the end of the fastening channel 311, and the check ring 317 is used for limiting the ball and preventing the ball from being separated from the fastening channel 311.

[0048] The two balls abutting in the driving groove 337 are driving balls 316, which realize the circumferential positioning between the sleeve and the input rotating rod 33, and enable the sleeve 31 to rotate when the input rotating rod 33 rotates, thereby realizing the pre-tightening of the nut 51. By rotating the fastening stud 313, the fastening stud 313 moves in the fastening channel 311, realizes the extrusion of the spring 314, changes the extrusion force of the spring 314 on the driving ball 316, can adjust the torque that can be borne between the sleeve 31 and the input rotating rod 33, and when the sleeve 31 drives the nut 51 to be pre-tightened to the position, the sleeve 31 no longer rotates, at this time, the input rotating rod 33 and the sleeve 31 can realize relative rotation, thereby preventing the nut 51 from being over-tightened and damaged, and enabling the input rotating rod 33 to continue to rotate.

[0049] Further, referring to Figure 6 and Figure 7 , the input rotating rod 33 is sleeved with a relatively arranged upper bevel gear 332 and a lower bevel gear 333, and the upper bevel gear 332 and the lower bevel gear 333 abut with a positioning sleeve 331 sleeved on the input rotating rod 33, which realizes the relative positioning between the upper bevel gear 332 and the lower bevel gear 333.

[0050] The lower side of the lower bevel gear 333 abuts against the upper side of the positioning ring 335 of the input rotating rod 33, and the lower side of the positioning ring 335 rotates and abuts in the ring groove 323 of the lower blocking ring 321, and the upper side of the lower blocking ring 321 is bolted with the power cover 32, and the inner side of the upper end of the power cover 32 abuts against the upper side of the upper bevel gear 332, thereby realizing the relative axial positioning of the upper bevel gear 332, the lower bevel gear 333, the positioning sleeve 331, the power cover 32 and the lower blocking ring 321.

[0051] Further, referring to Figure 6 , the lower side of the upper bevel gear 332 is meshingly connected with the left small bevel gear 341, the left small bevel gear 341 is coaxially fixedly connected with the left output rod 34, the left output rod 34 is rotationally connected to the power cover 32, the left small bevel gear 341 does not contact the lower bevel gear 333, the upper side of the lower bevel gear 333 is meshingly connected with the right small bevel gear 351, the right small bevel gear 351 does not contact the upper bevel gear 332, the right small bevel gear 351 is coaxially fixedly connected with the right output rod 35, and the right output rod 35 is rotationally arranged on the power cover 32. The left output rod 34 and the right output rod 35 are arranged in parallel and in the same plane.

[0052] Further, the upper end of the input rotating rod 33 is provided with a quadrangular prism, which is used to connect the input rotating rod 33 with the electric tool, and the quadrangular prism is driven to rotate by the electric tool, so that the sleeve 31 is driven to rotate, and the nut 51 is driven to rotate to realize the pre-tightening of the nut 51.

[0053] Working principle: first, the nut 51 is threadedly connected to the anchor bolt 5 of the wind power foundation, at this time, the anchor bolt 5 has been fixedly arranged on the wind power foundation, and the nut 51 is tightly connected with the wind power foundation and the wind power base, according to the number of the anchor bolt 5 and the nut 51 to be pre-tightened, a proper number of fastening groups 1 and connecting assemblies 2 are selected, the two fasteners 3 of the fastening group 1 are sleeved on the adjacent two nuts 51 respectively, then the adjacent fastening groups 1 are connected through the connecting assembly 2, and the universal joint 23 of the connecting assembly 2 is sleeved on the left output rod 34 or the right output rod 35 of the adjacent two fastening groups 1 respectively, since the connecting assembly 2 can be bent in any direction and axially stretched and contracted, the fastening groups 1 at the two ends of the connecting assembly 2 can be arranged at any position, and can adapt to the positions of the anchor bolts 5 in the wind power foundation.

[0054] After the fastening group 1 and the nut 51 are installed, the electric tool is sleeved on the quadrangular prism at the upper end of the input rotating rod 33 of any one fastener 3 of any one fastening group 1, and the electric tool is turned on, so that all the sleeves 31 can be driven to rotate, and all the nuts 51 can be simultaneously rotated. That is, a plurality of nuts 51 can be fastened at one time, and the nuts 51 can be quickly pre-tightened.

[0055] Since the required distance of the pre-tightening of the nut 51 is different, when the nut 51 that is first pre-tightened to the position is no longer rotated, at this time, the driving groove 337 extrudes the driving ball 316 to shrink into the fastening channel 311, the relative rotation between the input rotating rod 33 and the sleeve 31 is realized, the input rotating rod 33 can continue to rotate, and the pre-tightening of the other nuts 51 is not affected, until the pre-tightening of all the nuts 51 is completed.

[0056] Embodiment two:

[0057] On the basis of the embodiment one, referring to Figures 9-11 , the hexagonal groove 318 of the sleeve 31 is provided with a long sleeve assembly 4, the long sleeve assembly 4 comprises a connecting part 41, the connecting part 41 is in the shape of a hexagonal prism, the top end of the connecting part 41 is provided with a blind hole 411, a magnet 42 is arranged in the blind hole 411, the upper end of the magnet 42 abuts against a stop disc 43, the magnet 42 and the stop disc 43 are penetrated by a fastening screw 44, the fastening screw 44 fastens the magnet 42 and the stop disc 43 in the blind hole 411, and the connecting part 41 is slidably inserted into the hexagonal groove 318 of the sleeve 31. By arranging the magnet 42, the magnetic force of the magnet 42 can be used to tightly connect the long sleeve assembly 4 with the sleeve 31.

[0058] Further, the lower end of the connecting part 41 is provided with a cylindrical part 45, a cylindrical groove 451 is coaxially arranged in the cylindrical part 45, the lower end of the cylindrical groove 451 is communicated with a hexagonal groove 452, the cylindrical groove 451 and the hexagonal groove 452 both penetrate the side surface of the cylindrical part 45, the lower side of the hexagonal groove 452 is provided with a limiting flange 453, the limiting flange 453 is used for clamping the nut 51 on the anchor bolt 5 in the hexagonal groove 452, the nut 51 is driven to rotate through the rotation of the hexagonal groove 452, the rotation of the nut 51 on the anchor bolt 5 is realized, and the installation of the nut 51 on the anchor bolt 5 is realized. The cylindrical groove 451 is used for accommodating the anchor bolt 5, the installation distance of the nut 51 on the anchor bolt 5 can be improved, the connection of the nut 51 of the anchor bolt 5 with large length is adapted, and the connection is used for threadedly connecting the nut 51 on the anchor bolt 5, and a very large pre-tightening force is not required.

[0059] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A wind power foundation anchor bolt nut quick pre-tightening device, comprising a plurality of fastening groups (1), characterized in that: The fastening groups (1) are connected through the connecting assembly (2), and each fastening group (1) comprises two fasteners (3), and the two fasteners (3) are also connected through the connecting assembly (2); One of the fasteners (3) is sleeved with a left sliding seat (11) at the upper end, and the left sliding seat (11) is provided with a left sliding sleeve (111) at the side edge; the other fastener (3) is sleeved with a right sliding seat (12) at the upper end, and the right sliding seat (12) is provided with a right sliding sleeve (121) at the side edge; the left sliding sleeve (111) and the right sliding sleeve (121) are slidably sleeved with each other.

2. The wind power foundation anchor bolt nut quick pre-tightening device according to claim 1, characterized in that: The connecting assembly (2) comprises a concave rod (21) and a convex rod (22), one end of the concave rod (21) is provided with a sliding groove (211), the sliding groove (211) is slidably connected with a sliding rod (221), the sliding rod (221) is fixedly arranged at one end of the convex rod (22), and the sliding groove (211) and the sliding rod (221) are both rectangular; The concave rod (21) and the convex rod (22) are both connected with universal joints (23) at the ends away from each other, and the two ends of the universal joint (23) are both provided with a radially arranged fixing pin (231), and the outer side of the fixing pin (231) is sleeved with a clamping ring (232).

3. The wind power foundation anchor bolt nut quick pre-tightening device according to claim 2, characterized in that: The fastener (3) comprises a power cover (32), the input rotating rod (33) is rotatably arranged in the power cover (32), the lower end of the input rotating rod (33) is connected with a sleeve (31), one end of the sleeve (31) away from the input rotating rod (33) is provided with a hexagonal groove (318), the other end of the sleeve (31) is provided with a connecting groove (312), and the end of the input rotating rod (33) is inserted into the connecting groove (312).

4. The wind power foundation anchor bolt nut quick pre-tightening device according to claim 3, characterized in that: The circumferential outer surface of the lower end of the input rotating rod (33) is uniformly provided with a plurality of axially arranged driving grooves (337), and the upper side of the driving groove (337) is provided with a circumferentially arranged positioning groove (336).

5. The wind power foundation anchor bolt nut quick pre-tightening device according to claim 4, characterized in that: The side surface of the sleeve (31) is provided with three fastening channels (311) in parallel, a fastening stud (313) is threadedly connected in each fastening channel (311), the end of the fastening stud (313) abuts against a spring (314), and the end of the spring (314) away from the fastening stud (313) abuts against a ball, and the ball abuts against a check ring (317) at the end of the fastening channel (311); The ball abutting against the positioning groove (336) is a positioning ball (315), and the two balls abutting against the driving groove (337) are driving balls (316).

6. The wind power foundation anchor bolt nut quick pre-tightening device according to claim 5, characterized in that: The input rotating rod (33) is sleeved with oppositely arranged upper and lower bevel gears (332) and (333), and the positioning sleeve (331) sleeved on the input rotating rod (33) abuts between the upper and lower bevel gears (332) and (333). The lower side of the lower bevel gear (333) abuts against the upper side of the positioning ring (335) of the input rotating rod (33), the lower side of the positioning ring (335) rotatably abuts against the ring groove (323) in the lower check ring (321), the upper side of the lower check ring (321) is boltedly connected with the power cover (32), and the inner side of the upper end of the power cover (32) abuts against the upper side of the upper bevel gear (332).

7. The wind power foundation anchor bolt nut quick pre-tightening device according to claim 6, characterized in that: The upper big bevel gear (332) is connected with the left small bevel gear (341) on the lower side, the left small bevel gear (341) is coaxially fixedly connected with the left output rod (34), the left output rod (34) is rotatably connected on the power cover (32), the lower big bevel gear (333) is connected with the right small bevel gear (351) on the upper side, the right small bevel gear (351) is coaxially fixedly connected with the right output rod (35), the right output rod (35) is rotatably arranged on the power cover (32), and the left output rod (34) and the right output rod (35) are arranged in parallel and in the same plane.

8. The wind power foundation anchor bolt nut quick pre-tightening device according to claim 7, characterized in that: The input rotating rod (33) is provided with four prisms on the upper end.

9. The wind power foundation anchor bolt nut quick pre-tightening device according to claim 8, characterized in that: The hexagonal groove (318) of the sleeve (31) is provided with a long sleeve assembly (4), the long sleeve assembly (4) comprises a connecting part (41), the connecting part (41) is hexagonal, the connecting part (41) is provided with a blind hole (411) at the top end, the blind hole (411) is provided with a magnet (42), the magnet (42) abuts against a stop disc (43) on the upper end, the magnet (42) and the stop disc (43) are penetrated by a fastening screw (44), the fastening screw (44) fastens the magnet (42) and the stop disc (43) in the blind hole (411), and the connecting part (41) is slidably inserted into the hexagonal groove (318) of the sleeve (31).

10. The wind power foundation anchor bolt nut quick pre-tightening device according to claim 9, characterized in that: The connecting part (41) is provided with a cylindrical part (45) at the lower end, the cylindrical part (45) is coaxially provided with a cylindrical groove (451), the lower end of the cylindrical groove (451) is communicated with a hexagonal groove (452), the cylindrical groove (451) and the hexagonal groove (452) are penetrated through the side surface of the cylindrical part (45), the lower side of the hexagonal groove (452) is provided with a limiting flange (453), and the limiting flange (453) is used for clamping the nut (51) on the anchor bolt (5) in the hexagonal groove (452).

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