Bolt tightening device

Abstract

The utility model relates to the field of mechanical assembly, and discloses a bolt tightening device which comprises a vertical rotating mechanism, a vertical swinging mechanism, a circumferential rotating mechanism and a tightening gun. The vertical swing mechanism comprises a swing seat which is hinged to the rotating seat and can swing around a swing axis extending in the first horizontal direction, the circumferential rotating mechanism comprises a rotating sleeve which is rotatably arranged on the swing seat around the central axis of the rotating sleeve, and the tightening gun is fixedly connected into the rotating sleeve in a penetrating mode. According to the bolt tightening device, the operation difficulty and strength of bolt tightening can be remarkably reduced, and the bolt assembling efficiency and quality are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical assembly, and in particular relates to a bolt tightening device. Background Art

[0002] During the assembly process of construction machinery, there is usually a bolt tightening process, for example, the installation of the slewing reducer of a crane; in this process, the operator usually uses an air wrench to pre-tighten the bolts, and then uses a manual torque wrench to tighten the bolts for fixed torque assembly; this bolt tightening method has the problems of high noise on site, high difficulty and intensity in operation, low bolt assembly efficiency and quality, and the inability to trace the quality of the on-site assembly. Utility Model Content

[0003] In view of the above-mentioned deficiencies or defects in the prior art, the utility model provides a bolt tightening device, which aims to solve the technical problems of the existing bolt tightening method in the assembly process of engineering machinery, such as high on-site noise, high operating difficulty and intensity, low bolt assembly efficiency and quality, and inability to trace the quality of on-site assembly conditions.

[0004] In order to achieve the above object, the utility model provides a bolt tightening device, which comprises:

[0005] A vertical rotation mechanism, comprising a fixed seat, a rotating seat and a vertical rotation locking member, wherein the rotating seat is rotatably arranged on the fixed seat around a vertical axis, and the vertical rotation locking member can lock the rotating seat on the fixed seat;

[0006] A vertical swing mechanism, comprising a swing seat and a vertical swing locking member, wherein the swing seat is hinged on the rotating seat and can swing around a swing axis extending along a first horizontal direction, and the vertical swing locking member can lock the swing seat on the rotating seat;

[0007] The circumferential rotation mechanism comprises a rotating sleeve and a circumferential rotation locking member, wherein the rotating sleeve is rotatably arranged on the swing seat around its own central axis, the rotating sleeve is arranged so that the central axis is perpendicular to the swing axis, and the circumferential rotation locking member can lock the rotating sleeve on the swing seat;

[0008] The tightening gun is fixedly inserted into the rotating sleeve and is coaxially arranged with the rotating sleeve.

[0009] Optionally, the fixed seat is configured as a vertically arranged cylindrical structure, the rotating seat includes a rotating shaft portion and a hinge portion, the rotating shaft portion is installed in the fixed seat through a tapered roller bearing and has an extended end extending from the bottom end of the fixed seat, the hinge portion is fixedly connected to the extended end of the rotating shaft portion, and the swing seat is hinged to the hinge portion.

[0010] Optionally, a first connecting disk is formed at the protruding end of the rotating shaft portion, and a second connecting disk is formed at the top end of the hinge portion. The first connecting disk and the second connecting disk are overlapped and fixedly connected. The first connecting disk is provided with a plurality of grooves arranged at intervals along the circumference of the rotating shaft portion. The vertical rotation locking member is a knob plunger and is fixedly arranged on the fixed seat. The head plunger of the vertical rotation locking member has a locking position that is inserted into the groove and an escape position that is disengaged from the groove.

[0011] Optionally, the swing seat includes a swing part and a sleeve part, the top end of the swing part is hinged to the rotating seat through a hinge shaft arranged along the swing axis, the sleeve part is fixedly connected to the bottom end of the swing part and is perpendicular to the hinge shaft, and the rotating sleeve is nested in the sleeve part and a support bearing is arranged between the sleeve part.

[0012] Optionally, the vertical swing locking member is a knob plunger and is fixedly arranged on the rotating seat, and the head plunger of the vertical swing locking member has a locking position abutting against the top end of the swinging part and an escape position detached from the top end of the swinging part.

[0013] Optionally, a swing limiter is connected to the rotating seat, and a limit end of the swing limiter faces the output end of the tightening gun and is positionally adjustable in a direction away from or close to the output end of the tightening gun.

[0014] Optionally, the rotating sleeve has an extended end extending from one end of the sleeve portion, and an annular flange is protruding from the outer peripheral wall of the extended end of the rotating sleeve. The first end of the circumferential rotation locking member is fixedly connected to the annular flange, and the second end extends to the outer peripheral side of the sleeve portion. The outer peripheral wall of the sleeve portion is provided with a plurality of circumferentially spaced limiting holes corresponding to the position of the second end of the circumferential rotation locking member.

[0015] Optionally, the bolt tightening device further comprises:

[0016] A horizontal hanging rail arranged along a second horizontal direction;

[0017] A walking mechanism, comprising a moving frame, an electric walking trolley and a walking manipulator, wherein the electric walking trolley is suspended on the horizontal hanging rail and can move along the horizontal hanging rail, the electric walking trolley is provided with a guide rail arranged along the second horizontal direction, and the moving frame is movably suspended on the guide rail;

[0018] Wherein, the fixing seat is arranged on the moving frame.

[0019] Optionally, the bolt tightening device further includes a lifting mechanism, and the lifting mechanism includes:

[0020] Two bearing seats, the two bearing seats are fixedly arranged side by side and vertically on the movable frame;

[0021] Two support rods, the two support rods are respectively connected to the two bearing seats in a liftable manner through linear bearings,

[0022] A lifting frame, fixedly connected to the bottom ends of the two support rods respectively;

[0023] A spring balancer, a fixed end of which is connected to the moving frame, and a movable end of which is connected to the lifting frame;

[0024] Wherein, the fixing seat is fixedly installed on the lifting frame.

[0025] Optionally, the bolt tightening device further comprises:

[0026] An extension rod connected to the output end of the tightening gun;

[0027] A sleeve connected to the end of the extension rod;

[0028] A tightening gun controller, which is arranged on the mobile frame and is in communication connection with the tightening gun;

[0029] A socket selector, disposed on the lifting frame and communicatively connected to the tightening gun controller;

[0030] The travel mechanism further comprises a travel controller which is communicatively connected with the electric travel trolley, and the travel controller is arranged on the lifting frame.

[0031] Through the above technical scheme, the bolt tightening device of the utility model can be applied to the bolt tightening in the process of engineering machinery assembly. In actual application, the fixed seat can be mounted on the frame or the hanging mechanism. By adjusting the rotating seat of the vertical rotating mechanism, the swinging seat of the vertical swinging mechanism and the rotating sleeve of the circumferential rotating mechanism, the direction and inclination of the output end of the tightening gun can be adjusted so that the tightening gun can flexibly and quickly tighten the bolts with different arrangement positions and angles. In this way, the difficulty and intensity of operation can be significantly reduced, and the efficiency and quality of bolt assembly can be improved. In addition, the tightening gun has the characteristics of low working noise, data storage, high torque accuracy, etc., which is conducive to reducing the noise on the working site, improving the quality of bolt assembly, and the quality of bolt assembly can be traced back according to the stored data.

[0032] Other features and advantages of the present invention will be described in detail in the subsequent specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention but do not constitute a limitation to the present invention. In the accompanying drawings:

[0034] Figure 1 A schematic diagram of the structure of the bolt tightening device provided by the utility model;

[0035] Figure 2 for Figure 1 A schematic diagram of the three-dimensional structure of the bolt tightening device;

[0036] Figure 3 for Figure 2 Side view of the partial structure of the bolt tightening device Figure 1 ;

[0037] Figure 4 for Figure 2 Side view of the partial structure of the bolt tightening device Figure 2 ;

[0038] Figure 5 for Figure 4 A schematic diagram of the structure of the vertical swing mechanism and the circumferential rotation mechanism;

[0039] Figure 6 for Figure 5 A partial cross-sectional view of the vertical swing mechanism and the circumferential rotation mechanism in FIG.

[0040] Figure 7 for Figure 4 A schematic diagram of the structure of the vertical rotating mechanism;

[0041] Figure 8 for Figure 7 Cross-sectional view of the vertical rotation mechanism in FIG.

[0042] Description of reference numerals:

[0043] 1 Horizontal hanging rail

[0044] 2 Traveling mechanism

[0045] 21 Mobile rack 22 Electric travel trolley

[0046] 23 Walking controller

[0047] 3 Lifting mechanism

[0048] 31 Lifting frame 32 Bearing seat

[0049] 33 Support rod 34 Spring balancer

[0050] 4 Vertical rotation mechanism

[0051] 41 Fixed seat 42 Rotating seat

[0052] 421 Rotating shaft 421a First connecting plate

[0053] 422 hinge part 422a second connection plate

[0054] 43 Vertical rotation lock

[0055] 5 Vertical swing mechanism

[0056] 51 swing seat 511 swing part

[0057] 512 sleeve portion 52 vertical swing locking member

[0058] 6 Circumferential rotation mechanism

[0059] 61 Rotating sleeve 62 Circumferential rotation locking member

[0060] 7 Tightening gun

[0061] 8 Swing limiter

[0062] 9 Extension rod

[0063] 10 Sleeve

[0064] 11 Socket selector

[0065] 12 Tightening gun controller Specific embodiments

[0066] The specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0067] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0068] In the present invention, unless otherwise specified, directional words such as "up, down, top, bottom" are usually used with reference to the directions shown in the drawings or are used to describe the relative positional relationships of components in the vertical, perpendicular or gravity direction.

[0069] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0070] The utility model firstly provides a bolt tightening device.

[0071] In one embodiment, referring to the attached Figure 1 and attached Figure 2 As shown, the bolt tightening device includes:

[0072] The vertical rotation mechanism 4 includes a fixed seat 41, a rotating seat 42 and a vertical rotation locking member 43. The rotating seat 42 is rotatably arranged on the fixed seat 41 around a vertical axis. The vertical rotation locking member 43 can lock the rotating seat 42 on the fixed seat 41.

[0073] The vertical swing mechanism 5 includes a swing seat 51 and a vertical swing locking member 52. The swing seat 51 is hinged on the rotating seat 42 and can swing around a swing axis extending along the first horizontal direction. The vertical swing locking member 52 can lock the swing seat 51 on the rotating seat 42.

[0074] The circumferential rotation mechanism 6 includes a rotating sleeve 61 and a circumferential rotation locking member 62. The rotating sleeve 61 is rotatably arranged on the swing seat 51 around its own central axis. The rotating sleeve 61 is arranged so that the central axis is perpendicular to the swing axis. The circumferential rotation locking member 62 can lock the rotating sleeve 61 on the swing seat 51.

[0075] The tightening gun 7 is fixedly inserted into the rotating sleeve 61 and is coaxially arranged with the rotating sleeve 61 .

[0076] The bolt tightening device in this embodiment can be applied to the bolt tightening in the process of engineering machinery assembly. In actual application, the fixed seat 41 can be set on the frame or the hanging mechanism. By adjusting the rotating seat 42 of the vertical rotating mechanism 4, the swinging seat 51 of the vertical swinging mechanism 5 and the rotating sleeve 61 of the circumferential rotating mechanism 6, the direction and inclination of the output end of the tightening gun 7 can be adjusted so that the tightening gun can flexibly and quickly tighten the bolts with different arrangement positions and angles. In this way, the difficulty and intensity of operation can be significantly reduced, and the efficiency and quality of bolt assembly can be improved. In addition, the tightening gun 7 has the characteristics of low working noise, data storage, high torque accuracy, etc., which is conducive to reducing the noise on the working site, improving the quality of bolt assembly, and the quality of bolt assembly can be traced back according to the stored data.

[0077] In one embodiment, referring to the attached Figure 4 , Attachment Figure 7 And attached Figure 8 As shown, the fixed seat 41 is configured as a vertically arranged cylindrical structure, the rotating seat 42 includes a rotating shaft portion 421 and a hinge portion 422, the rotating shaft portion 421 is installed in the fixed seat 41 through a tapered roller bearing and has an extended end extending from the bottom end of the fixed seat 41, the hinge portion 422 is fixedly connected to the extended end of the rotating shaft portion 421, and the swing seat 51 is hinged at the hinge portion 422. In this configuration, the rotating seat 42 rotates relative to the fixed seat 41 around the vertical axis, which can drive the swing seat 51 to rotate around the vertical axis, and then drive the tightening gun 7 to rotate around the vertical axis.

[0078] Of course, in other embodiments, the fixed seat 41 and the rotating seat 42 can also be other structural forms and matching forms, for example, the fixed seat 41 is set as a vertically arranged columnar structure, and the rotating seat 42 includes a rotating sleeve part and a hinge part in a cylindrical structure, the rotating sleeve part is sleeved on the periphery of the fixed seat 41 through a tapered roller bearing, and the hinge part is hinged to the bottom end of the rotating sleeve part. In this way, the rotating sleeve part can also rotate around the vertical axis relative to the fixed seat 41, driving the hinge part 422 and the swing seat 51 to rotate around the vertical axis.

[0079] In one embodiment, referring to the attached Figures 4 to 8 As shown, the protruding end of the rotating shaft portion 421 is formed with a first connecting disk 421a, and the top end of the hinge portion 422 is formed with a second connecting disk 422a. The first connecting disk 421a and the second connecting disk 422a are overlapped and fixedly connected. The first connecting disk 421a is provided with a plurality of grooves arranged at intervals along the circumference of the rotating shaft portion 421. The vertical rotating locking member 43 is a knob plunger and is fixedly arranged on the fixing seat 41. The head plunger of the vertical rotating locking member 43 has a locking position inserted into the groove and an escape position disengaged from the groove.

[0080] In actual application, when the rotating seat 42 is rotated to adjust the horizontal position of the tightening gun 7, the head plunger of the vertical rotating locking member 43 is switched to an avoidance position disengaged from the groove. When the rotating seat 42 is rotated to make the horizontal position of the tightening gun 7 reach a suitable position, the head plunger of the vertical rotating locking member 43 is switched to a locking position in which it is engaged with the groove aligned with it at this time. In this way, even if the rotating seat 42 is locked, the horizontal position of the tightening gun 7 is locked.

[0081] Specifically, the first connection plate 421a and the second connection plate 422a may be fastened and connected by fasteners such as bolts. Of course, in some other embodiments, the rotating shaft portion 421 and the hinge portion 422 may also be an integrally formed structure.

[0082] In one embodiment, referring to the attached Figures 4 to 6 As shown, the swing seat 51 includes a swing portion 511 and a sleeve portion 512. The top of the swing portion 511 is hinged to the rotating seat 42 via a hinge shaft arranged along the swing axis. The sleeve portion 512 is fixedly connected to the bottom of the swing portion 511 and is perpendicular to the hinge shaft. The rotating sleeve 61 is nested in the sleeve portion 512 and a support bearing is arranged between the sleeve portion 512. In this way, the swing seat 51 can swing around the swing axis to drive the rotating sleeve 61 and the tightening gun to swing up and down around the swing axis.

[0083] Specifically, the swing portion 511 and the sleeve portion 512 may be an integrally formed structure, and may also be fixedly connected to each other by fastening with fasteners or by welding.

[0084] In one embodiment, referring to the attached Figure 5 As shown, the vertical swing locking member 52 is a knob plunger and is fixedly disposed on the rotating seat 42 . The head plunger of the vertical swing locking member 52 has a locking position abutting against the top of the swinging portion 511 and an escape position disengaged from the top of the swinging portion 511 .

[0085] In actual application, when it is necessary to swing the swing seat 51 to adjust the inclination angle of the tightening gun 7, the head plunger of the vertical swing locking piece 52 is switched to an avoidance position that is disengaged from the top end of the swing portion 511. When the swing seat 51 is swung to make the inclination angle of the tightening gun 7 reach a suitable inclination angle, the head plunger of the vertical swing locking piece 52 is switched to a locking position that abuts against the top end of the swing portion 511. In this way, even if the swing seat 51 is locked, the inclination angle of the tightening gun 7 is locked.

[0086] Specifically, the rotating seat 42 is provided with a through hole for the head plunger of the vertical swing locking member 52 to extend into.

[0087] In one embodiment, referring to the attached Figure 5 As shown, a swing limiter 8 is connected to the rotating seat 42, and the limit end of the swing limiter 8 faces the output end of the tightening gun 7 and is adjustable in the direction away from or close to the output end of the tightening gun 7. In this way, when the tightening gun 7 swings up and down around the swing axis, the swing limiter 8 limits the swing amplitude of the tightening gun 7, thereby preventing the tightening gun 7 from swinging too much and colliding with the rotating seat 42 and causing wear.

[0088] Specifically, a mounting plate with a threaded hole is connected to the rotating seat 42, and the swing limiter 8 is a bolt and is screwed in the threaded hole of the mounting plate. The head of the swing limiter 8 faces the output end of the tightening gun 7 as a limit end, and the position of the limit end can be adjusted in the direction away from or close to the output end of the tightening gun 7 by screwing the swing limiter 8 forward or reverse.

[0089] In one embodiment, referring to the attached Figure 5 and 6As shown, the rotating sleeve 61 has an extended end extending from one end of the sleeve portion 512, and an annular flange is convexly provided on the outer peripheral wall of the extended end of the rotating sleeve 61. The first end of the circumferential rotation locking member 62 is fixedly connected to the annular flange, and the second end extends to the outer peripheral side of the sleeve portion 512. The outer peripheral wall of the sleeve portion 512 is provided with a plurality of circumferentially spaced limiting holes corresponding to the position of the second end of the circumferential rotation locking member 62. In this way, by inserting bolts into two adjacent limiting holes, the circumferential rotation locking member 62 can be limited on both sides of the circumferential direction of the rotating sleeve 61 by the heads of the two bolts protruding from the outer peripheral wall of the sleeve portion 512, that is, the circumferential rotation locking member 62 is locked between the two bolts, and the rotating sleeve 61 is locked. When it is necessary to rotate the rotating sleeve 61 to adjust the direction of the output end of the tightening gun 7, the bolts can be removed from the limiting holes.

[0090] Specifically, the rotating sleeve 61 may include an outer sleeve, an inner sleeve and a clamping copper sleeve. The outer sleeve is connected to the sleeve portion 512 through a supporting bearing, and the inner sleeve is sleeved on the tightening gun 7. The clamping copper sleeve includes two semi-ring portions respectively sleeved on the inner sleeve. The two semi-ring portions are fastened and docked with each other by bolts to clamp the inner sleeve, so that the inner sleeve is tightly sleeved on the tightening gun 7. The two semi-ring portions are also fastened and connected to the outer sleeve through fasteners.

[0091] In one embodiment, referring to the attached Figure 2 and attached Figure 3 As shown, the bolt tightening device also includes:

[0092] A horizontal hanging rail 1, arranged along a second horizontal direction;

[0093] The walking mechanism 2 includes a moving frame 21, an electric walking trolley 22 and a walking controller 23. The electric walking trolley 22 is suspended on the horizontal hanging rail 1 and can move along the horizontal hanging rail 1. The electric walking trolley 22 is provided with a guide rail arranged along the second horizontal direction, and the moving frame 21 is movably suspended on the guide rail;

[0094] The fixing seat 41 is arranged on the moving frame 21 .

[0095] In this embodiment, the tightening gun 7 can be driven to translate within a larger range by the electric walking trolley 22, so that the bolt tightening device has a larger working range, and a guide rail arranged along the second horizontal direction is provided on the electric walking trolley 22, and the mobile frame 21 can be movably suspended on the guide rail. In this way, when the tightening gun 1 needs to be translated a small distance, the tightening gun 7 can be translated within a smaller range by pushing the mobile frame 21 to translate relative to the electric walking trolley 22.

[0096] In one embodiment, referring to the attached Figure 2 and attached Figure 3 As shown, the bolt tightening device also includes a lifting mechanism 3, and the lifting mechanism 3 includes:

[0097] Two bearing seats 32, the two bearing seats 32 are fixedly arranged side by side and vertically on the moving frame 21;

[0098] Two support rods 33, the two support rods 33 are respectively connected to the two bearing seats 32 through linear bearings so as to be liftable;

[0099] The lifting frame 31 is fixedly connected to the bottom ends of the two support rods 33 respectively;

[0100] A spring balancer 34, the fixed end of which is connected to the moving frame 21, and the movable end of which is connected to the lifting frame 31;

[0101] The fixing seat 41 is fixedly installed on the lifting frame 31 .

[0102] In this embodiment, through the action of the spring balancer 34, the lifting frame 31 and the components arranged on the lifting frame 31 can be placed in a weightless state and can be suspended at any height position, so that the operator can easily adjust the height position of the lifting frame 31 to adjust the height position of the tightening gun 7 during the bolt tightening operation.

[0103] In addition, the lifting mechanism 3 in this embodiment includes two vertically arranged and side-by-side support rods 33. Such an arrangement enables the lifting mechanism 3 to play an anti-torsion role during the tightening process of the clamp 7, and can withstand the reaction force generated during the tightening process of the clamp 7, while also effectively improving the overall support strength of the lifting mechanism 3.

[0104] In this embodiment, in order to facilitate the operator to operate the lifting frame 31, a manipulation handle may be installed on the lifting frame 31.

[0105] In one embodiment, referring to the attached Figure 2 and attached Figure 4 As shown, the bolt tightening device also includes:

[0106] Extension rod 9, connected to the output end of the tightening gun 7

[0107] A sleeve 10 connected to the end of the extension rod 9;

[0108] A tightening gun controller 12, which is disposed on the mobile frame 21 and is in communication connection with the tightening gun 7;

[0109] The sleeve selector 11 is disposed on the lifting frame 31 and is in communication connection with the tightening gun controller 12;

[0110] The traveling mechanism 2 further includes a traveling controller 23 that is in communication with the electric traveling trolley 22, and the traveling controller 23 is disposed on the lifting frame 31. It can be understood that the operator can control the movement of the electric traveling trolley 22 through the traveling controller 23.

[0111] In actual application, the extension rod 9 lengthens the output end of the tightening gun 7, so that the sleeve 10 can be extended into a relatively narrow working space to perform bolt tightening operations, effectively improving the applicability of the bolt tightening device.

[0112] It can be understood that the sleeve selector 11 is provided with a plurality of sleeves. When the operator selects a sleeve connected to the extension rod 9, the sleeve selector 11 sends a sleeve signal corresponding to the selected sleeve to the tightening gun controller 12, and the tightening gun controller 12 switches the corresponding tightening control program according to the sleeve signal. It should be noted that the sleeve selector 11 is a device well known to those skilled in the art, and therefore, its specific structure and working principle will not be described in detail here.

[0113] In this embodiment, the sleeve selector 11 and the travel controller 23 are both arranged in the lifting frame 31. With this arrangement, the lifting frame 31 can be used as the main control platform for the operator. Controlling the translation of the tightening gun 7, the lifting height of the tightening gun 7, and the replacement of the sleeve can all be completed on the lifting frame 31, thereby effectively improving the convenience of the tightening operation.

[0114] In order to facilitate the operator's operation, the travel controller 23 can be specifically arranged on a control handle installed on the lifting frame 31 .

[0115] In one embodiment, the bolt tightening device also includes a tightening reminder light, which is arranged on the mobile frame 21 and is communicated with the tightening gun 7. When the tightening gun 7 completes the tightening action, a corresponding signal will be sent to the tightening reminder light. The tightening reminder light lights up according to the received signal to prompt the operator that the tightening gun 7 has completed the tightening action, so that the operator can confirm the tightening situation.

[0116] In one embodiment, the bolt tightening device also includes a drag chain assembly, one end of the drag chain assembly is connected to the mobile frame 21, and the other end is connected to the lifting frame 31. The tightening gun controller 12 and the tightening gun 7, the tightening indicator light and the tightening gun 7, and the socket selector 11 and the tightening gun controller 12 can be communicated via cables, and the respective cables can be stored in the drag chain assembly. In this way, the entanglement and vibration of the cables can be reduced, thereby protecting the cables from wear and damage.

[0117] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0118] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0119] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0120] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A bolt tightening device, characterized in that: The bolt tightening device comprises: A vertical rotation mechanism (4), comprising a fixed seat (41), a rotating seat (42) and a vertical rotation locking member (43), wherein the rotating seat (42) is rotatably arranged on the fixed seat (41) around a vertical axis, and the vertical rotation locking member (43) is capable of locking the rotating seat (42) on the fixed seat (41); A vertical swing mechanism (5), comprising a swing seat (51) and a vertical swing locking member (52), wherein the swing seat (51) is hinged on the rotating seat (42) and can swing around a swing axis extending along a first horizontal direction, and the vertical swing locking member (52) can lock the swing seat (51) on the rotating seat (42); A circumferential rotation mechanism (6), comprising a rotation sleeve (61) and a circumferential rotation locking member (62), wherein the rotation sleeve (61) is rotatably arranged on the swing seat (51) around its own central axis, the rotation sleeve (61) is arranged so that the central axis is perpendicular to the swing axis, and the circumferential rotation locking member (62) can lock the rotation sleeve (61) on the swing seat (51); The tightening gun (7) is fixedly inserted into the rotating sleeve (61) and is coaxially arranged with the rotating sleeve (61).

2. The bolt tightening device according to claim 1, characterized in that: The fixed seat (41) is configured as a vertically arranged cylindrical structure, the rotating seat (42) comprises a rotating shaft portion (421) and a hinge portion (422), the rotating shaft portion (421) is installed in the fixed seat (41) via a tapered roller bearing and has an extended end extending from the bottom end of the fixed seat (41), the hinge portion (422) is fixedly connected to the extended end of the rotating shaft portion (421), and the swing seat (51) is hinged to the hinge portion (422).

3. The bolt tightening device according to claim 2, characterized in that: The protruding end of the rotating shaft portion (421) is formed with a first connecting disk (421a), and the top end of the hinge portion (422) is formed with a second connecting disk (422a), the first connecting disk (421a) and the second connecting disk (422a) are overlapped and fixedly connected, the first connecting disk (421a) is provided with a plurality of grooves arranged at intervals along the circumference of the rotating shaft portion (421), the vertical rotating locking member (43) is a knob plunger and is fixedly arranged on the fixing seat (41), and the head plunger of the vertical rotating locking member (43) has a locking position inserted into the groove and an escape position disengaged from the groove.

4. The bolt tightening device according to claim 1, characterized in that: The swing seat (51) comprises a swing part (511) and a sleeve part (512); the top end of the swing part (511) is hinged to the rotating seat (42) via a hinge shaft arranged along the swing axis; the sleeve part (512) is fixedly connected to the bottom end of the swing part (511) and is perpendicular to the hinge shaft; the rotating sleeve (61) is nested in the sleeve part (512) and a support bearing is arranged between the sleeve part (512) and the rotating sleeve (61).

5. The bolt tightening device according to claim 4, characterized in that: The vertical swing locking member (52) is a knob plunger and is fixedly arranged on the rotating seat (42); the head plunger of the vertical swing locking member (52) has a locking position abutting against the top end of the swinging portion (511) and an escape position detached from the top end of the swinging portion (511).

6. The bolt tightening device according to claim 4, characterized in that: The rotating seat (42) is connected to a swing limiter (8), the limiter end of the swing limiter (8) faces the output end of the tightening gun (7) and is positionally adjustable in a direction away from or close to the output end of the tightening gun (7).

7. The bolt tightening device according to claim 4, characterized in that: The rotating sleeve (61) has an extended end extending from one end of the sleeve portion (512); an annular flange is convexly provided on the outer peripheral wall of the extended end of the rotating sleeve (61); a first end of the circumferentially rotating locking member (62) is fixedly connected to the annular flange, and a second end extends to the outer peripheral side of the sleeve portion (512); and a plurality of circumferentially spaced limiting holes are provided on the outer peripheral wall of the sleeve portion (512) at positions corresponding to the second end of the circumferentially rotating locking member (62).

8. The bolt tightening device according to claim 1, characterized in that: The bolt tightening device also includes: A horizontal hanging rail (1) arranged along a second horizontal direction; A walking mechanism (2), comprising a moving frame (21), an electric walking trolley (22) and a walking controller (23), wherein the electric walking trolley (22) is suspended on the horizontal hanging rail (1) and can move along the horizontal hanging rail (1), the electric walking trolley (22) is provided with a guide rail arranged along the second horizontal direction, and the moving frame (21) is movably suspended on the guide rail; Wherein, the fixing seat (41) is arranged on the moving frame (21).

9. The bolt tightening device according to claim 8, characterized in that: The bolt tightening device further comprises a lifting mechanism (3), wherein the lifting mechanism (3) comprises: Two bearing seats (32), the two bearing seats (32) are fixedly arranged side by side and vertically on the movable frame (21); Two support rods (33), the two support rods (33) are respectively connected to the two bearing seats (32) via linear bearings so as to be liftable; A lifting frame (31) is fixedly connected to the bottom ends of the two support rods (33) respectively; A spring balancer (34), a fixed end of which is connected to the movable frame (21), and a movable end of which is connected to the lifting frame (31); Wherein, the fixing seat (41) is fixedly mounted on the lifting frame (31).

10. The bolt tightening device according to claim 9, characterized in that: The bolt tightening device also includes: An extension rod (9) connected to the output end of the tightening gun (7); A sleeve (10) connected to the end of the extension rod (9); A tightening gun controller (12), which is arranged on the mobile frame (21) and is communicatively connected with the tightening gun (7); A sleeve selector (11), which is arranged on the lifting frame (31) and is communicatively connected with the tightening gun controller; The walking mechanism (2) further comprises a walking controller (23) which is communicatively connected to the electric walking trolley (22); the walking controller (23) is arranged on the lifting frame (31).

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