CN114029892A - Electric wrench - Google Patents
Electric wrench Download PDFInfo
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- CN114029892A CN114029892A CN202111517463.1A CN202111517463A CN114029892A CN 114029892 A CN114029892 A CN 114029892A CN 202111517463 A CN202111517463 A CN 202111517463A CN 114029892 A CN114029892 A CN 114029892A
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- 238000009434 installation Methods 0.000 claims abstract description 41
- 230000007704 transition Effects 0.000 claims description 41
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The invention discloses an electric wrench, which relates to the technical field of fastening auxiliary operation equipment and comprises a wrench main body, wherein a multidirectional rotary assembly is arranged on the wrench main body, the multidirectional rotary assembly comprises a supporting structure, a rotary pair structure arranged on the supporting structure and a rotary structure connected with the rotary pair structure, the rotary structure is hollow and forms a first installation cavity, the rotary structure is connected with an operating rod, the operating rod is tubular, a second installation cavity is formed in the inner space of the operating rod, the rotary structure comprises a sleeving part and a rotary part, the rotary part comprises two arc-shaped shifting pieces, axial limiting structures are arranged on the outer walls of the rotary structure and the operating rod, a loosening assembly is arranged in the second installation cavity, the loosening assembly is connected with an operating assembly, and the operating assembly is used for adjusting the position of the loosening assembly in the second installation cavity and the first installation cavity. The invention has the advantages of wide application range, good use experience and reduced operation cost.
Description
Technical Field
The invention relates to the technical field of fastening auxiliary operation equipment, in particular to an electric wrench.
Background
The electric wrench is an electric tool for screwing and unscrewing the bolt and the nut, is a tool for screwing the high-strength bolt, and is used for initial screwing, final screwing and initial screwing of the torsional shear type high-strength bolt in the construction of mounting the large hexagon-head high-strength bolt on a steel structure bridge, a factory building, a chemical industry and power generation equipment, and occasions with strict requirements on the torque or the axial force of a bolt fastener. The existing electric wrench is small and exquisite, the electric wrench is held by one hand, the tightening head of the electric wrench is short from the holding part, and the electric wrench can only be used under general conditions, but the requirement of people on the fastening reliability is higher and higher at present, the range of equipment needing fastening operation is wider and wider, under the operation conditions of high-altitude live working, deep well equipment installation and the like, because the operation point position is too far or too deep, the existing electric wrench is inconvenient or cannot be used, and the electric wrench needs some auxiliary equipment to be sent out, the operation cost is additionally increased, and the electric wrench is sent out through the auxiliary equipment, so that the bolt or the nut cannot be conveniently aligned, and the operation cannot be stably and reliably carried out.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides an electric wrench.
In order to achieve the purpose, the invention provides an electric wrench, which comprises a wrench main body, wherein a multidirectional rotary component is arranged on the wrench main body, the multidirectional rotary component comprises a supporting structure, a rotary pair structure arranged on the supporting structure and a rotary structure connected with the rotary pair structure, the rotary structure is hollow and forms a first installation cavity, the rotary structure is connected with an operating rod, the operating rod is tubular, and the inner space of the operating rod forms a second installation cavity; the rotating structure comprises a sleeving part and a rotating part, the sleeving part is sleeved on the rotating pair structure, the rotating part comprises two arc-shaped shifting pieces arranged along the circumferential direction, the arc-shaped shifting pieces are clamped in the second mounting cavity and enable the first mounting cavity to be communicated with the second mounting cavity, the rotating structure can rotate circumferentially around the central line of the operating rod, axial limiting structures are arranged on the outer walls of the rotating structure and the operating rod, and the axial limiting structures are used for limiting axial relative displacement of the rotating structure and the operating rod; the improved structure is characterized in that a tightening assembly extending into the first installation cavity is arranged in the second installation cavity, the tightening assembly is connected with an operation assembly penetrating out of the second installation cavity, the operation assembly is used for adjusting the position of the tightening assembly in the second installation cavity and the first installation cavity, the tightening assembly is used for clamping or loosening the rotating pair structure in the sleeving part after the position is changed, and the tightening assembly is further used for abutting against or loosening two arc-shaped shifting pieces in the rotating part after the position is changed. Whole spanner main part possesses torque sensor and data acquisition system, has predetermine the required moment of different model bolt nut tightening in the data acquisition system according to the national standard, and when the spanner starts, the torque signal that data acquisition system passed through torque sensor detection and sent into, through confirming the moment of torsion between the ring gear of low-speed planetary gear and the tie rod, feeds back control signal to DC motor after handling to the realization is to the automatic control of spanner strength.
Preferably, the take-up assembly includes a first take-up structure comprising: a retaining bar set disposed within the second mounting cavity; a first link group provided at a left end of the holding rod group; the second connecting rod group is arranged at the left end of the holding rod group; the first pressing part is arranged on the first connecting rod group; the second pressing part is arranged on the second connecting rod group; the holding rod group is connected with the operating assembly, the first connecting rod group and the second connecting rod group are symmetrically arranged, the operating assembly is used for adjusting the positions of the holding rod group in the second mounting cavity and the first mounting cavity, when the position of the holding rod group is changed, the first connecting rod group and the second connecting rod group deform, and the first abutting portion and the second abutting portion can abut against or release the two arc-shaped shifting pieces respectively. The holding rod group is driven by the operation assembly to move in the second installation cavity and the first installation cavity, so that the first connecting rod group and the second connecting rod group are driven to move, the first connecting rod group and the second connecting rod group deform after moving, the positions of the first abutting-against part and the second abutting-against part are changed, and the first abutting-against part and the second abutting-against part abut against or loosen the two arc-shaped shifting pieces.
Preferably, the first linkage and the second linkage are symmetrically arranged, and both comprise: the first rotating pair is arranged on the left end surface of the holding rod group; a sliding connecting rod connected with the first rotating pair; the second revolute pair is arranged at the tail end of the sliding connecting rod; a sliding groove arranged on the sliding connecting rod; and a positioning body clamped in the sliding groove; the two second revolute pairs are respectively connected with the first pressing part and the second pressing part, the positioning body is fixed in the second mounting cavity and extends into the first mounting cavity, and the sliding groove can move relative to the positioning body. After the holding rod group moves leftwards, the position of the sliding connecting rod can be changed, and the position of the positioning body is unchanged, so that the sliding connecting rod can rotate around the positioning body under the action of the first rotating pair and the second rotating pair, and meanwhile, the sliding groove and the positioning body can also slide relatively, so that the positions of the first pressing part and the second pressing part are changed, and finally, the two arc-shaped shifting pieces are respectively pressed by the first pressing part and the second pressing part.
Preferably, the retaining bar set comprises: a first retaining rod connected to the operating assembly; a first cylindrical inner groove formed in an end surface of the first holding rod; and a second retaining rod inserted into the first cylindrical inner groove; wherein the second holding lever left end is provided with the first link group and the second link group. By arranging the holding lever group as the first holding lever and the second holding lever while the first holding lever is connected to the operating assembly and the second holding lever is connected to the first link group and the second link group, when the operating assembly is rotated in the circumferential direction, only the first holding lever is rotated, the second holding lever is not rotated, and therefore the deformation of the second link group of the first link group is not affected.
Preferably, the first cylindrical inner groove is internally provided with an elastic member contacting a right end of the second retaining rod. Through the setting of elastic component, can form the vibration compensation of certain degree, improve the job stability.
Preferably, the take-up assembly includes a second take-up structure comprising: an internal operation opening arranged on the side surface of the holding rod group; a guide passage provided inside the holding rod group; a third retaining rod inserted into the guide passage; and a third pressing portion provided at a left end of the third holding lever; the operating assembly extends into the guide channel from the internal operating opening and is connected with a third holding rod, the operating assembly is used for adjusting the position of the third holding rod in the second mounting cavity and the first mounting cavity, and when the position of the third holding rod is changed, the third pressing part can press against or release the rotating pair structure. Through set up the direction passageway in holding the pole group inside, can prevent that first elasticity structure and second elasticity structure from interfering each other, through the internal operation mouth, let the third keep the pole smoothly by the operating element drive to make third pressure portion and revolute pair structural contact or separation, thereby realize that third pressure portion supports or unclamps revolute pair structure.
Preferably, the first cylindrical inner tank has a bottom surface opened with a second cylindrical inner tank, the elastic member is disposed inside the first cylindrical inner tank, the internal operation port communicates with the second cylindrical inner tank, and the third retaining rod passes through the first cylindrical inner tank and extends inside the second cylindrical inner tank. Set up the elastic component in the first cylindricality inside groove, set up the internal operation mouth on the second cylindricality inside groove, can prevent that the interior operation subassembly of wearing to establish in the internal operation mouth from influencing the normal use of elastic component.
Preferably, the operating assembly comprises a first operating structure and a second operating structure; the first operating structure comprises a first connecting head, a first transition rod fixed on the first connecting head and a first operating handle fixed on the first transition rod, a first external operating opening is formed in the second mounting cavity, the first connecting head is fixed on the outer wall of the first retaining rod, and the first transition rod penetrates through the first external operating opening and can move along the inner wall of the first external operating opening; the second operation structure comprises a second connector, a second transition rod fixed on the second connector and a second operation handle fixed on the second transition rod, a second external operation port is formed in the second installation cavity, the second connector is fixed on the third retaining rod outer wall, the second transition rod penetrates through the internal operation port and the first external operation port in sequence, and the second transition rod can move along the inner wall of the internal operation port and the inner wall of the first external operation port. The operator pushes or pulls back along the first external operation port or the second external operation port by holding the first operation handle or the second operation handle, so that the first holding rod is driven to move, and the operation is realized.
Preferably, a first positioning lock hole is formed in the first external operation port, a first external thread is formed in the first transition rod, a first positioning nut is locked to the first external thread, and the first positioning nut can move into the first positioning lock hole along the first transition rod to limit the first transition rod to move; the second external operation opening is provided with a second positioning lock hole, the second transition rod is provided with a second external thread, the second external thread is locked with a second positioning nut, and the second positioning nut can move into the second positioning lock hole along the second transition rod so as to limit the second transition rod to move. When the first positioning nut is clamped into the first positioning locking hole, the position of the first retaining rod can be fixed, namely when the elastic component abuts against the arc shifting piece, the position of the whole retaining rod group is fixed, and therefore the long-time fixing of the operation angle of the wrench body is achieved; similarly, the third retaining rod can be fixed in position by clamping the second positioning nut into the second positioning locking hole, namely when the tightening assembly clamps the rotating pair structure, the third retaining rod is fixed, and therefore the wrench body can be fixed for a long time in operation angle.
Preferably, axial limit structure includes the axial positioning cover, be provided with first card strip and second card strip along the circumferencial direction on the axial positioning cover, first card strip card is established on the gyration portion, the card of second card strip is established on the action bars. The position between the first clamping strip and the second clamping strip on the axial positioning sleeve is fixed, so that after the first clamping strip is clamped on the rotating part, the axial position of the whole multidirectional rotating assembly relative to the axial positioning sleeve is unchanged, and after the second clamping strip is clamped on the operating rod, the axial position of the whole operating rod relative to the axial positioning sleeve is unchanged, namely the axial relative positions of the multidirectional rotating assembly and the operating rod are unchanged.
The invention has the beneficial effects that:
according to the invention, the multidirectional rotary component and the operating rod are arranged at the bottom of the wrench main body, so that an operator can operate the whole wrench main body at a relatively far position, wherein a supporting structure and a rotary structure in the multidirectional rotary component are connected into a whole through a rotary pair structure, the rotary pair structure enables the supporting structure and the rotary structure to rotate relatively, the operation angle of the wrench main body can be changed in one direction, the rotary structure is clamped into the operating rod, the rotary structure can reliably and stably rotate circumferentially around the central line of the operating rod under the limitation of an axial limiting structure, and the whole multidirectional rotary component can rotate circumferentially around the central line of the operating rod, so that the operation angle of the wrench main body can be changed in the other direction; furthermore, the elastic assembly is arranged in the first installation cavity and the second installation cavity, and the elastic assembly is connected with the operation assembly penetrating out of the second installation cavity, so that an operator can directly change the position of the elastic assembly through operating the operation assembly, the elastic assembly is enabled to interfere the arc-shaped shifting piece and the rotating pair structure, positive pressure is generated after the elastic assembly contacts the rotating pair structure, when the positive pressure on the contact surface of the elastic assembly and the rotating pair structure is large enough, the whole rotating pair structure can be clamped, the supporting structure and the rotating structure can not overcome the friction force to rotate relatively, the wrench main body is fixed, similarly, the positive pressure is generated after the elastic assembly contacts the arc-shaped shifting piece of the rotating part, the arc-shaped shifting piece is enabled to generate elastic deformation through the large enough positive pressure, and the arc-shaped shifting piece after the elastic deformation is more closely contacted with the inner wall of the second installation cavity, when the operation assembly is positioned at the tail end part of the whole operation rod, even if a far distance exists between an operator and the wrench main body, the operation direction of the wrench main body can be fixed at will; in conclusion, the whole wrench main body is high in space utilization rate and convenient to operate, can be suitable for places with too far or too deep operation points on the basis of not using any auxiliary equipment, reduces the use cost, simultaneously realizes tightness control on the operation direction of the whole wrench main body, enables the whole electric wrench to be more reasonably aligned to bolts or nuts at various positions, improves the operation efficiency, can improve the operation stability, and has high popularization value.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a front view of the structure of the present invention;
FIG. 2 is a perspective view of the structure of the present invention;
FIG. 3 is an enlarged view of the structure of FIG. 2 at A according to the present invention;
FIG. 4 is a rear view of the structure of the present invention;
FIG. 5 is a schematic structural diagram of a rotating structure according to the present invention;
FIG. 6 is a schematic view of the construction of a retaining bar assembly according to the present invention;
FIG. 7 is a schematic structural view of a lever portion structure of the present invention;
FIG. 8 is a schematic view of the present invention in one state of the operating assembly;
fig. 9 is a schematic structural view of the operating assembly of the present invention in another state.
Reference numerals:
1-a wrench body, 2-a multidirectional rotary component, 21-a support structure, 22-a rotary pair structure, 23-a rotary structure, 231-a sleeving part, 232-a rotary part, 2321-an arc-shaped plectrum, 24-a first mounting cavity, 3-an operating rod, 31-a second mounting cavity, 4-an axial limiting structure, 41-an axial positioning sleeve, 42-a first clamping strip, 43-a second clamping strip, 5-a first tightening structure, 51-a retaining rod group, 511-a first retaining rod, 512-a first cylindrical inner groove, 513-a second retaining rod, 514-an elastic component, 515-a second cylindrical inner groove, 52-a first connecting rod group, 521-a first rotary pair, 522-a sliding connecting rod, 523-a second rotary pair and 524-a sliding groove, 525-a positioning body, 53-a second connecting rod group, 54-a first pressing part, 55-a second pressing part, 6-a second loosening structure, 61-an internal operation port, 62-a guide channel, 63-a third holding rod, 64-a third pressing part, 7-a first operation structure, 71-a first connecting head, 72-a first transition rod, 73-a first operation handle, 74-a first external operation port, 75-a first positioning lock hole, 76-a first positioning nut, 8-a second operation structure, 81-a second connecting head, 82-a second transition rod, 83-a second operation handle, 84-a second external operation port, 85-a second positioning lock hole and 86-a second positioning nut.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships conventionally arranged when products of the present invention are used, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements indicated must have specific orientations, be constructed in specific orientations, and operated, and thus, cannot be construed as limiting the present invention.
As shown in fig. 1 to 9, an electric wrench comprises a wrench body 1, wherein a multi-directional rotation assembly 2 is arranged on the wrench body 1, the multi-directional rotation assembly 2 comprises a support structure 21, a rotation pair structure 22 arranged on the support structure 21 and a rotation structure 23 connected with the rotation pair structure 22, the rotation structure 23 is hollow and forms a first installation cavity 24, the rotation structure 23 is connected with an operating rod 3, the operating rod 3 is tubular, and the inner space forms a second installation cavity 31; the rotating structure 23 comprises a sleeving part 231 and a rotating part 232, the sleeving part 231 is sleeved on the rotating pair structure 22, the rotating part 232 comprises two arc shifting pieces 2321 arranged along the circumferential direction, the arc shifting pieces 2321 are clamped in the second mounting cavity 31 and enable the first mounting cavity 24 to be communicated with the second mounting cavity 31, the rotating structure 23 can rotate circumferentially around the central line of the operating rod 3, axial limiting structures 4 are arranged on the outer walls of the rotating structure 23 and the operating rod 3, and the axial limiting structures 4 are used for limiting axial relative displacement of the rotating structure 23 and the operating rod 3; be provided with the elasticity subassembly that extends to in the first installation cavity 24 in the second installation cavity 31, the elasticity subassembly is connected with the operating element who wears out second installation cavity 31, operating element is used for adjusting the position of elasticity subassembly in second installation cavity 31 and first installation cavity 24 inside, the elasticity subassembly is used for blocking tightly or loosening the vice structure 22 of rotating in the portion 231 of establishing that overlaps after the position change, the elasticity subassembly still is used for propping or loosening two arc plectrums 2321 in the portion of revolving 232 after the position change.
In this embodiment, it should be noted that the entire wrench body 1 includes a torque sensor and a data acquisition system, the data acquisition system presets torques required for tightening bolts and nuts of different models according to national standards, when the wrench is started, the data acquisition system detects a torque signal sent thereto through the torque sensor, determines a torque between a gear ring of the low-speed planetary gear and a tie bar, and feeds a control signal back to the dc motor after processing, thereby realizing automatic control of wrench strength. Wherein, the bottom of the wrench body 1 is provided with the multi-directional rotating component 2 and the operating rod 3, so that an operator can operate the whole wrench body 1 at a relatively far position, the support structure 21 and the revolving structure 23 in the multidirectional revolving assembly 2 are connected into a whole through the revolving pair structure 22, the revolving pair structure 22 also enables the support structure 21 and the revolving structure 23 to rotate relatively, the operation angle of the wrench body 1 can be changed in one direction, the revolving structure 23 is clamped into the operating rod 3, the revolving structure 23 can reliably and stably rotate in the circumferential direction around the central line of the operating rod 3 under the limitation of the axial limiting structure 4, and finally the whole multidirectional revolving assembly 2 can rotate in the circumferential direction around the central line of the operating rod 3, so that the operation angle of the wrench body 1 can be changed in the other direction; furthermore, a tension assembly is arranged in the first installation cavity 24 and the second installation cavity 31, and the tension assembly is connected with an operation assembly penetrating through the second installation cavity 31, so that an operator can directly change the position of the tension assembly by operating the operation assembly, the tension assembly interferes the arc-shaped shifting piece 2321 and the revolute pair structure 22, when the tension assembly contacts the revolute pair structure 22, a positive pressure is generated, when the positive pressure on the contact surface of the tension assembly and the revolute pair structure is large enough, the whole revolute pair structure 22 can be clamped, the support structure 21 and the revolution structure 23 can not overcome the friction force to rotate relatively, the wrench main body 1 is fixed, similarly, when the tension assembly contacts the arc-shaped shifting piece 2321 of the revolution part 232, the positive pressure is generated, the arc-shaped shifting piece 2321 is elastically deformed by the large enough positive pressure, and the elastically deformed arc-shaped shifting piece 2321 is in closer contact with the inner wall of the second installation cavity 31, the pulling sheet and the inner wall of the second mounting cavity 31 generate enough friction force, so that the pulling sheet and the inner wall of the second mounting cavity 31 cannot overcome the friction force to rotate relatively, the wrench body 1 is fixed, and when the operating assembly is positioned at the tail section of the whole operating rod 3, even if a far distance exists between an operator and the wrench body 1, the operation direction of the wrench body 1 can be fixed at will; in conclusion, the whole wrench body 1 has high space utilization rate and convenient operation, can be suitable for places with too far or too deep operation points on the basis of not using any auxiliary equipment, reduces the use cost, realizes tightness control on the operation direction of the whole wrench body 1, enables the whole electric wrench to be more reasonably aligned with bolts or nuts at various positions, improves the operation efficiency, can improve the operation stability and has extremely high popularization value.
Specifically, the takeup assembly includes a first takeup structure 5, the first takeup structure 5 including: a retaining rod group 51 disposed in the second mounting chamber 31; a first link group 52 provided at the left end of the holding rod group 51; a second link group 53 provided at the left end of the holding lever group 51; a first pressing portion 54 provided on the first link group 52; and a second pressing portion 55 provided on the second linkage 53; the holding rod set 51 is connected with an operation component, the first connecting rod set 52 and the second connecting rod set 53 are symmetrically arranged, the operation component is used for adjusting the positions of the holding rod set 51 in the second mounting cavity 31 and the first mounting cavity 24, after the position of the holding rod set 51 is changed, the first connecting rod set 52 and the second connecting rod set 53 are deformed, and the first abutting-against part 54 and the second abutting-against part 55 can abut against or release the two arc-shaped shifting pieces 2321 respectively.
In this embodiment, it should be noted that the holding rod set 51 is driven by the operating component to move inside the second mounting cavity 31 and the first mounting cavity 24, and further drive the first link set 52 and the second link set 53 to move, and the first link set 52 and the second link set 53 deform after moving, so as to change the positions of the first pressing part 54 and the second pressing part 55, so that the first pressing part 54 and the second pressing part 55 press or release the two arc-shaped shifting pieces 2321.
Specifically, first linkage 52 and second linkage 53 are symmetrically disposed, and each includes: a first revolute pair 521 provided on the left end surface of the holding lever group 51; a slide link 522 connected to the first rotary pair 521; a second rotating pair 523 provided at the distal end of the slide link 522; a slide groove 524 provided in the slide link 522; and a positioning body 525 clamped in the sliding groove 524; the two second revolute pairs 523 are respectively connected to the first abutting portion 54 and the second abutting portion 55, the positioning body 525 is fixed in the second mounting cavity 31 and extends into the first mounting cavity 24, and the sliding groove 524 and the positioning body 525 can move relatively.
In the present embodiment, as shown in fig. 3, after the holding rod set 51 moves to the left, the position of the sliding link 522 is changed, and since the position of the positioning body 525 is not changed, under the action of the first rotating pair 521 and the second rotating pair 523, the sliding link 522 rotates around the positioning body 525, and at the same time, the sliding groove 524 and the positioning body 525 also slide relatively, so that the positions of the first pressing portion 54 and the second pressing portion 55 are changed, and finally, the two arc-shaped pulling pieces 2321 are respectively pressed by the first pressing portion 54 and the second pressing portion 55.
Specifically, the holding bar group 51 includes: a first holding lever 511 connected to the operation member; a first cylindrical inner groove 512 formed in an end surface of the first holding rod 511; and a second retaining rod 513 inserted into the first cylindrical inner groove 512; wherein, the first linkage 52 and the second linkage 53 are provided at the left end of the second holding rod 513.
In the present embodiment, it should be noted that, by providing the holding lever group 51 as the first holding lever 511 and the second holding lever 513, and connecting the first holding lever 511 to the operating unit and the second holding lever 513 to the first link group 52 and the second link group 53, when the operating unit is rotated in the circumferential direction, only the first holding lever 511 is rotated, and the second holding lever 513 is not rotated, so that the deformation of the second link group 53 of the first link group 52 is not affected.
Specifically, the first internal cylindrical groove 512 is internally provided with an elastic member 514 that contacts the right end of the second holding lever 513.
In the present embodiment, it should be noted that the elastic member 514 is provided to compensate for vibration to a certain extent, thereby improving the operation stability.
Specifically, the takeup assembly includes a second takeup structure 6, the second takeup structure 6 including: an inner operation port 61 opened in a side surface of the holding lever group 51; a guide passage 62 opened inside the holding rod group 51; a third holding rod 63 inserted into the guide passage 62; and a third pressing portion 64 provided at the left end of the third holding lever 63; wherein, the operation component extends from the internal operation opening 61 to the guide channel 62 and is connected with the third holding rod 63, the operation component is used for adjusting the position of the third holding rod 63 in the second installation cavity 31 and the first installation cavity 24, and when the position of the third holding rod 63 is changed, the third pressing part 64 can press against or release the rotating pair structure 22.
In the present embodiment, it should be noted that, by providing the guide channel 62 inside the holding rod set 51, the first loosening structure 5 and the second loosening structure 6 can be prevented from interfering with each other, and the third holding rod 63 is smoothly driven by the operating component through the internal operating opening 61, so that the third pressing portion 64 contacts with or separates from the revolute pair structure 22, and the third pressing portion 64 presses against or releases the revolute pair structure 22.
Specifically, the first inner cylindrical groove 512 is opened at a bottom surface thereof with a second inner cylindrical groove 515, the elastic member 514 is disposed inside the first inner cylindrical groove 512, the internal operation port 61 communicates with the second inner cylindrical groove 515, and the third holding rod 63 passes through the first inner cylindrical groove 512 and extends inside the second inner cylindrical groove 515.
In the present embodiment, the elastic member 514 is disposed in the first cylindrical inner tank 512, and the internal operation opening 61 is opened in the second cylindrical inner tank 515, so that the operation member inserted into the internal operation opening 61 can be prevented from affecting the normal use of the elastic member 514.
In particular, the operating assembly comprises a first operating structure 7 and a second operating structure 8; the first operating structure 7 comprises a first connecting head 71, a first transition rod 72 fixed on the first connecting head 71 and a first operating handle 73 fixed on the first transition rod 72, a first external operating opening 74 is formed in the second mounting cavity 31, the first connecting head 71 is fixed on the outer wall of the first holding rod 511, and the first transition rod 72 penetrates through the first external operating opening 74 and can move along the inner wall of the first external operating opening 74; the second operation structure 8 comprises a second connecting head 81, a second transition rod 82 fixed on the second connecting head 81 and a second operation handle 83 fixed on the second transition rod 82, a second external operation port 84 is opened on the second mounting cavity 31, the second connecting head 81 is fixed on the outer wall of the third holding rod 63, the second transition rod 82 penetrates through the internal operation port 61 and the first external operation port 74 in sequence, and the second transition rod 82 can move along the inner walls of the internal operation port 61 and the first external operation port 74.
In the present embodiment, the operator holds the first operating handle 73 or the second operating handle 83 and pushes or pulls the first holding rod 511 along the first external operating port 74 or the second external operating port 84, thereby moving the first holding rod 511.
Specifically, a first positioning lock hole 75 is formed in the first external operation hole 74, a first external thread is formed on the first transition rod 72, a first positioning nut 76 is locked on the first external thread, and the first positioning nut 76 can move into the first positioning lock hole 75 along the first transition rod 72 to limit the first transition rod 72 to move; the second external operation opening 84 is provided with a second positioning lock hole 85, the second transition rod 82 is provided with a second external thread, the second external thread is locked with a second positioning nut 86, and the second positioning nut 86 can move into the second positioning lock hole 85 along the second transition rod 82 to limit the second transition rod 82 to move.
In the present embodiment, it should be noted that when the first positioning nut 76 is locked into the first positioning lock hole 75, the position of the first holding rod 511 can be fixed, that is, when the elastic component abuts against the arc-shaped shifting piece 2321, the position of the whole holding rod group 51 is fixed, so as to fix the operation angle of the wrench body for a long time; similarly, when the second positioning nut 86 is engaged with the second positioning hole 85, the position of the third retaining rod 63 can be fixed, that is, when the tightening/loosening assembly fastens the rotating pair structure 22, the position of the third retaining rod 63 is fixed, so that the wrench body can be fixed for a long time.
Specifically, axial limit structure 4 includes axial positioning sleeve 41, is provided with first card strip 42 and second card strip 43 along the circumferencial direction on the axial positioning sleeve 41, and first card strip 42 card is established on gyration portion 232, and the card of second card strip 43 is established on action bars 3.
In the present embodiment, since the position between the first locking strip 42 and the second locking strip 43 on the axial positioning sleeve 41 is fixed, when the first locking strip 42 is locked on the rotation portion 232, the axial position of the entire multi-directional rotating assembly 2 relative to the axial positioning sleeve 41 is not changed, and when the second locking strip 43 is locked on the operating rod 3, the axial position of the entire operating rod 3 relative to the axial positioning sleeve 41, that is, the axial positions of the multi-directional rotating assembly 2 and the operating rod 3 are not changed.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (10)
1. An electric wrench is characterized by comprising a wrench main body, wherein a multidirectional rotation assembly is arranged on the wrench main body, the multidirectional rotation assembly comprises a supporting structure, a rotation pair structure arranged on the supporting structure and a rotation structure connected with the rotation pair structure, the rotation structure is hollow and forms a first installation cavity, the rotation structure is connected with an operating rod, the operating rod is tubular, and the inner space of the operating rod forms a second installation cavity; wherein,
the rotary structure comprises a sleeving part and a rotary part, the sleeving part is sleeved on the rotating pair structure, the rotary part comprises two arc-shaped shifting pieces arranged along the circumferential direction, the arc-shaped shifting pieces are clamped in the second mounting cavity and enable the first mounting cavity to be communicated with the second mounting cavity, the rotary structure can circumferentially rotate around the central line of the operating rod, axial limiting structures are arranged on the rotary structure and the outer wall of the operating rod, and the axial limiting structures are used for limiting axial relative displacement of the rotary structure and the operating rod;
the improved structure is characterized in that a tightening assembly extending into the first installation cavity is arranged in the second installation cavity, the tightening assembly is connected with an operation assembly penetrating out of the second installation cavity, the operation assembly is used for adjusting the position of the tightening assembly in the second installation cavity and the first installation cavity, the tightening assembly is used for clamping or loosening the rotating pair structure in the sleeving part after the position is changed, and the tightening assembly is further used for abutting against or loosening two arc-shaped shifting pieces in the rotating part after the position is changed.
2. The power wrench of claim 1, wherein the takeup assembly includes a first takeup structure, the first takeup structure including:
a retaining bar set disposed within the second mounting cavity;
a first link group provided at a left end of the holding rod group;
the second connecting rod group is arranged at the left end of the holding rod group;
the first pressing part is arranged on the first connecting rod group; and
the second pressing part is arranged on the second connecting rod group; wherein,
the holding rod group is connected with the operating assembly, the first connecting rod group and the second connecting rod group are symmetrically arranged, the operating assembly is used for adjusting the positions of the holding rod group in the second mounting cavity and the first mounting cavity, when the position of the holding rod group is changed, the first connecting rod group and the second connecting rod group deform, and the first abutting portion and the second abutting portion can abut against or release the two arc-shaped shifting pieces respectively.
3. The power wrench of claim 2, wherein the first linkage and the second linkage are symmetrically disposed and each include:
the first rotating pair is arranged on the left end surface of the holding rod group;
a sliding connecting rod connected with the first rotating pair;
the second revolute pair is arranged at the tail end of the sliding connecting rod;
a sliding groove arranged on the sliding connecting rod; and
a positioning body clamped in the sliding groove; wherein,
the two second revolute pairs are respectively connected with the first pressing part and the second pressing part, the positioning body is fixed in the second mounting cavity and extends into the first mounting cavity, and the sliding groove can move relative to the positioning body.
4. The power wrench of claim 3, wherein the retaining bar set includes:
a first retaining rod connected to the operating assembly;
a first cylindrical inner groove formed in an end surface of the first holding rod; and
a second holding rod inserted into the first cylindrical inner groove; wherein,
the first link group and the second link group are arranged at the left end of the second holding rod.
5. The electric wrench as claimed in claim 4, wherein the first internal cylindrical groove is internally provided with an elastic member contacting a right end of the second retaining rod.
6. The power wrench of claim 5, wherein the takeup assembly includes a second takeup structure, the second takeup structure including:
an internal operation opening arranged on the side surface of the holding rod group;
a guide passage provided inside the holding rod group;
a third retaining rod inserted into the guide passage; and
a third pressing portion provided at a left end of the third holding lever; wherein,
the operating assembly extends into the guide channel from the internal operating opening and is connected with the third retaining rod, the operating assembly is used for adjusting the positions of the third retaining rod in the second mounting cavity and the first mounting cavity, and when the position of the third retaining rod is changed, the third pressing part can press against or release the rotating pair structure.
7. The electric wrench as claimed in claim 6, wherein the first inner cylindrical groove has a bottom surface opened with a second inner cylindrical groove, the elastic member is provided inside the first inner cylindrical groove, the inner operation opening communicates with the second inner cylindrical groove, and the third retaining rod passes through the first inner cylindrical groove and extends inside the second inner cylindrical groove.
8. The power wrench of claim 7, wherein the operating assembly includes a first operating structure and a second operating structure; wherein,
the first operating structure comprises a first connecting head, a first transition rod fixed on the first connecting head and a first operating handle fixed on the first transition rod, a first external operating opening is formed in the second mounting cavity, the first connecting head is fixed on the outer wall of the first retaining rod, and the first transition rod penetrates through the first external operating opening and can move along the inner wall of the first external operating opening;
the second operation structure comprises a second connector, a second transition rod fixed on the second connector and a second operation handle fixed on the second transition rod, a second external operation port is formed in the second installation cavity, the second connector is fixed on the third retaining rod outer wall, the second transition rod penetrates through the internal operation port and the first external operation port in sequence, and the second transition rod can move along the inner wall of the internal operation port and the inner wall of the first external operation port.
9. The electric wrench as claimed in claim 8, wherein the first external operation opening is provided with a first positioning lock hole, the first transition rod is provided with a first external thread, the first external thread is locked with a first positioning nut, and the first positioning nut can move into the first positioning lock hole along the first transition rod to limit the first transition rod from moving;
the second external operation opening is provided with a second positioning lock hole, the second transition rod is provided with a second external thread, the second external thread is locked with a second positioning nut, and the second positioning nut can move into the second positioning lock hole along the second transition rod so as to limit the second transition rod to move.
10. The electric wrench according to any one of claims 1 to 9, wherein the axial limiting structure includes an axial positioning sleeve, a first clamping strip and a second clamping strip are arranged on the axial positioning sleeve along a circumferential direction, the first clamping strip is clamped on the rotating portion, and the second clamping strip is clamped on the operating rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111517463.1A CN114029892B (en) | 2021-12-13 | 2021-12-13 | Electric wrench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111517463.1A CN114029892B (en) | 2021-12-13 | 2021-12-13 | Electric wrench |
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| Publication Number | Publication Date |
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| CN114029892A true CN114029892A (en) | 2022-02-11 |
| CN114029892B CN114029892B (en) | 2023-04-25 |
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| CN202716187U (en) * | 2012-05-29 | 2013-02-06 | 广西玉柴重工有限公司 | Spanner with rotary sleeve |
| JP2016132069A (en) * | 2015-01-20 | 2016-07-25 | マルエイシステム株式会社 | Head movable type spanner |
| DE202018003607U1 (en) * | 2018-08-02 | 2018-08-13 | Torque-Tech Precision Co., Ltd. | Slidable torque wrench |
| CN208601411U (en) * | 2018-07-19 | 2019-03-15 | 广东电网有限责任公司 | A kind of Electrified fastening screw device |
| CN209414735U (en) * | 2019-01-28 | 2019-09-20 | 深圳中科捷飞科技有限公司 | The operating device of intensive installation valve |
| CN213197134U (en) * | 2020-08-25 | 2021-05-14 | 内江师范学院 | Crucible tongs for laboratory |
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2021
- 2021-12-13 CN CN202111517463.1A patent/CN114029892B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202716187U (en) * | 2012-05-29 | 2013-02-06 | 广西玉柴重工有限公司 | Spanner with rotary sleeve |
| JP2016132069A (en) * | 2015-01-20 | 2016-07-25 | マルエイシステム株式会社 | Head movable type spanner |
| CN208601411U (en) * | 2018-07-19 | 2019-03-15 | 广东电网有限责任公司 | A kind of Electrified fastening screw device |
| DE202018003607U1 (en) * | 2018-08-02 | 2018-08-13 | Torque-Tech Precision Co., Ltd. | Slidable torque wrench |
| CN209414735U (en) * | 2019-01-28 | 2019-09-20 | 深圳中科捷飞科技有限公司 | The operating device of intensive installation valve |
| CN213197134U (en) * | 2020-08-25 | 2021-05-14 | 内江师范学院 | Crucible tongs for laboratory |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114029892B (en) | 2023-04-25 |
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