CN112846741A - Self-positioning and self-adaptive nut screwing device - Google Patents
Self-positioning and self-adaptive nut screwing device Download PDFInfo
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- CN112846741A CN112846741A CN202110059458.4A CN202110059458A CN112846741A CN 112846741 A CN112846741 A CN 112846741A CN 202110059458 A CN202110059458 A CN 202110059458A CN 112846741 A CN112846741 A CN 112846741A
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- 230000007246 mechanism Effects 0.000 claims abstract description 56
- 230000005540 biological transmission Effects 0.000 claims abstract description 13
- 230000003044 adaptive effect Effects 0.000 claims abstract description 9
- 230000009471 action Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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- 230000001595 contractor effect Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
- B23P19/06—Screw or nut setting or loosening machines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/001—Article feeders for assembling machines
- B23P19/006—Holding or positioning the article in front of the applying tool
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Abstract
The invention discloses a self-positioning self-adaptive nut screwing device, which relates to the technical field of hardware tools and comprises the following components: the self-adaptive clamping device comprises a self-adaptive positioning mechanism, a ratchet wheel transmission mechanism and a self-adaptive clamping mechanism; the adaptive positioning mechanism comprises: the hydraulic cylinder is arranged at the lower end of the supporting plate; the ratchet drive mechanism includes: the self-adaptive clamping mechanism is arranged in the ratchet wheel; the adaptive clamping mechanism includes: the nut comprises a cavity inner core, clamping teeth and a sliding block, wherein one end, far away from the sliding block, of each clamping tooth is arranged in a manner of extending along the radial direction of the cavity inner core, a first spring arranged in a manner of extending along the radial direction of the cavity inner core is arranged between each clamping tooth and the cavity inner core, and one end of the cavity inner core is provided with a power device which enables the cavity inner core to slide along the axial direction of a ratchet wheel.
Description
Technical Field
The invention relates to the technical field of hardware tools, in particular to a self-positioning and self-adaptive nut screwing device.
Background
The automatic installation and maintenance of large nuts are concerned with the manufacturing reliability and stability of large equipment and the efficiency of later maintenance. The problem to be solved during the assembly maintenance of the nut is how to accurately locate the nut position and ensure that the assembly tool grips the target nut and then provides sufficient tightening torque.
In a current patent, a flexible self-adaptation size allen key is disclosed, this allen key stretches out and draws back nested combination with a plurality of unidimensional allen keys to reduce instrument size kind, be convenient for accomodate, flexible operation in the work is applied to electric tool and need not change the batch head and just can realize unidimensional allen operating mode, has improved work efficiency, nevertheless this structure only be suitable for with certain size sequence, in case the nut size is not just can not screw up in the sequence.
In another prior patent, a self-adaptive wrench is disclosed, which comprises a handle, a sliding block and a head, wherein the cam on the handle is adopted to push the sliding block to match with the head to clamp a bolt and a nut, the self-adaptive wrench has a simple structure, does not damage edges and corners of the bolt and the nut, clamps the bolt and the nut, does not slide relatively, is not easy to scratch, but cannot effectively buffer large-torque operation processing and cannot continuously operate.
In another prior patent, a self-adaptive ratchet socket wrench is disclosed, which comprises a socket assembly and a driving assembly which are connected, wherein the socket assembly comprises a socket jacket, a self-adaptive elastic part and a clamping block, the lower end surface of the socket jacket is upwards provided with a socket hole, and the inner wall of the socket hole is uniformly provided with three sections of same arc-shaped grooves. The nut fitting device is simple in design, reasonable in structure, easy to manufacture, capable of improving working efficiency and capable of automatically adapting to the specification of the nut, however, the nut fitting device is not suitable for the environment with narrow working space and is not suitable for the working condition with large torque.
In summary, the importance of the adaptability to the design of the wrench is to increase the reusability of the tool and to enable different types of target nuts to be screwed better, however, when designing a large nut screwing mechanism, not only the adaptability of the wrench but also the torque required during machining and the anti-vibration force generated by driving when the machining is finished are taken into consideration, and of course, there are continuous machining problems.
Disclosure of Invention
The invention aims to provide a self-positioning self-adaptive nut screwing device, which solves the problems of accurate positioning, large torque and continuous operation processing in the automatic assembly and maintenance of the existing large-scale nut.
The technical scheme for solving the technical problems is as follows:
a self-aligning, self-adapting nut tightening device comprising: the self-adaptive clamping device comprises a self-adaptive positioning mechanism, a ratchet wheel transmission mechanism and a self-adaptive clamping mechanism; the adaptive positioning mechanism comprises: the ratchet wheel transmission mechanism and the self-adaptive clamping mechanism are arranged on the supporting plate; the ratchet drive mechanism includes: the self-adaptive clamping mechanism is arranged in the ratchet wheel; the adaptive clamping mechanism includes: the ratchet wheel comprises a cavity inner core, a plurality of clamping teeth arranged on the inner wall surface of the cavity inner core and a sliding block which is arranged on the inner wall surface of the ratchet wheel and matched with the clamping teeth through inclined planes, wherein one end, far away from the sliding block, of each clamping tooth is arranged along the radial extension of the cavity inner core, a first spring arranged along the radial extension of the cavity inner core is arranged between each clamping tooth and the cavity inner core, and a power device enabling the cavity inner core to slide along the axial direction of the ratchet wheel is arranged at one end of the cavity inner.
The self-positioning self-adaptive nut screwing device is provided with a self-adaptive positioning mechanism, the self-adaptive positioning mechanism comprises a supporting plate and a first hydraulic cylinder arranged at the lower end of the supporting plate, a ratchet transmission mechanism and a self-adaptive clamping mechanism are arranged on the supporting plate, when the self-positioning self-adaptive nut screwing device works, the first hydraulic cylinder is in a semi-locking state, namely, the thrust provided by the first hydraulic cylinder is equal to the gravity of an entity above the supporting plate, when the self-adaptive clamping mechanism performs clamping action, the nut can provide reaction force for the whole mechanism, meanwhile, the position of the supporting plate is adaptively adjusted to achieve a positioning effect, and a target nut positioning process is also performed in the clamping process; the self-adaptive clamping mechanism is characterized in that a second hydraulic cylinder is arranged in the ratchet wheel transmission mechanism, the power output of the second hydraulic cylinder acts on the shell, the ratchet wheel is arranged in the shell, a pawl matched with the ratchet wheel and used for driving the ratchet wheel to rotate is further arranged in the shell, and after the self-adaptive clamping mechanism clamps the nut, the pawl drives the ratchet wheel to rotate under the power action of the second hydraulic cylinder so as to tighten the nut; the self-adaptive clamping mechanism is driven by a power device to clamp nuts with different sizes, the specific clamping structure adopts clamping teeth and a sliding block which are matched through an inclined plane, the clamping teeth are arranged on an inner cavity core, one end of each clamping tooth extends into the inner cavity core to be contacted with the nut to be screwed, the inner cavity core is driven by the power device to move along the axial direction, the clamping teeth in the inner cavity core also move along the axial direction of the inner cavity core along with the inner cavity core, the sliding block is matched with the clamping teeth through the inclined plane, when the clamping teeth move along the axial direction of the inner cavity core, the clamping teeth move along the radial direction of the inner cavity core along the inclined plane in a matched mode so as to clamp the nut arranged in the inner cavity core, and the.
Further, in the preferred embodiment of the present invention, the outer casing is a cylindrical structure with one open end, and the open end of the outer casing is provided with an annular end cover for preventing the inner core of the cavity from coming off.
The cavity inner core slides relative to the ratchet wheel along the axial direction under the action of the power device so as to clamp the nut, and the ratchet wheel is arranged in the shell, so that the end cover is arranged at the end part of the shell to fix the ratchet wheel and limit the cavity inner core.
Further, in a preferred embodiment of the present invention, the second hydraulic cylinder is disposed to be inclined toward an end close to the housing, a connecting seat is disposed between the second hydraulic cylinder and the housing, a second spring is disposed in the connecting seat, and an end of the pawl far from the ratchet wheel is connected to the second spring.
The second hydraulic cylinder is obliquely arranged towards one end close to the shell, when the power output shaft of the second hydraulic cylinder extends, the shell rotates anticlockwise, the second spring is compressed, the end part of the pawl is abutted against the ratchet wheel, and the ratchet wheel is immobile, so that the condition is provided for continuous operation; when the power output shaft of the second hydraulic cylinder is shortened, the shell is driven to rotate clockwise, the pawl drives the ratchet wheel to rotate, and the cavity inner core can be driven to rotate, so that the screwing operation is achieved.
Further, in a preferred embodiment of the present invention, the cavity inner core is a cylindrical structure with an opening at one end, the power device is disposed at the closed end of the cavity inner core, the closed end of the cavity inner core is provided with a fixed seat, a connecting rod disposed along the axial direction of the cavity inner core is disposed in the fixed seat, one end of the connecting rod is connected with the power device, and the other end of the connecting rod passes through the fixed seat and is rotatably disposed on the cavity inner core.
The cavity inner core is connected with the power device through the fixing seat and the connecting rod, and the fixing seat is used for supporting the connecting rod, so that the connecting rod can push the cavity inner core to move back and forth along the axial direction of the ratchet wheel.
Further, in the preferred embodiment of the present invention, the power unit employs a linear reciprocating hydraulic cylinder.
Further, in a preferred embodiment of the present invention, a ball is disposed at one end of the connecting rod close to the cavity core, a groove matching with the shape of the ball is disposed on the cavity core, and a through hole matching with the connecting rod and the ball is disposed in the fixing seat.
The connecting rod adopts the ball to be connected with the cavity inner core, and at the in-process of screwing up the nut operation, the cavity inner core rotates for the connecting rod, and the connecting rod passes through ball and cavity inner core surface to the laminating, the moment of torsion that reduces the surface friction production that can be very big.
Further, in a preferred embodiment of the present invention, the longitudinal section of the clip tooth is "cross" shaped, and the clip tooth includes: the clamping block, the width of the clamping block are larger than the first stop block of the clamping block, the first matching block is arranged on the first stop block and far away from one side of the clamping block, a first inclined plane matched with the sliding block is arranged on the surface of one end, far away from one end of the first stop block, of the first matching block, a T-shaped through hole matched with the first stop block and the clamping block in structure is formed in the cavity inner core, one end of the first spring is arranged in the T-shaped through hole, and the other end of the first spring is arranged on the first stop block.
The clamping teeth are of a cross-shaped structure, a first spring is arranged between a first stop block with large middle width and the cavity inner core, when the clamping teeth are not clamped, the clamping blocks are recovered in a T-shaped through hole of the cavity inner core under the action of the first spring, when the clamping teeth are required to be clamped, the power device drives the cavity inner core to drive the clamping teeth to move along the axial direction, a first inclined plane on a first matching block moves along a second inclined plane on a sliding block, the clamping teeth can move along the radial direction of the cavity inner core when moving along the axial direction, and the first stop block compresses the first spring to clamp the nut.
Further, in a preferred embodiment of the present invention, the longitudinal section of the slider is "cross", and the slider includes: the second cooperation piece, the width are greater than the second stopper of second cooperation piece and set up the supporting shoe of keeping away from second cooperation piece one end at the second stopper, be equipped with on the second cooperation piece with first inclined plane matched with second inclined plane, the inner wall of ratchet be equipped with the structure assorted standing groove of slider.
The slider also sets up to "ten" style of calligraphy, sets up the second inclined plane on the second cooperation piece and is used for cooperating with first cooperation piece, and second dog and supporting shoe are then used for fixing the slider on the ratchet inner wall.
Further, in the preferred embodiment of the invention, the cross section of the inner wall surface of the cavity inner core is a regular hexagon matched with the structure of the nut, and the clamping teeth are arranged along the radial direction of the cavity inner core.
The cavity inner core adopts regular hexagon to press from both sides the radial setting of tooth along the cavity inner core, press from both sides the tooth and be the vertical state with the outer wall of treating to screw up the nut, be more convenient for will treat that the nut presss from both sides tightly.
Further, in a preferred embodiment of the present invention, a bottom plate is disposed at an end of the first hydraulic cylinder away from the support plate, a plurality of guide posts are disposed on the bottom plate, the direction of power output of the guide posts is the same as that of the first hydraulic cylinder, and the support plate is slidably disposed on the guide posts.
The lower end of the first hydraulic cylinder is arranged on the bottom plate, the guide post is arranged on the bottom plate, and when the first hydraulic cylinder pushes the supporting plate to lift, the guide post can play a role in guiding the movement of the supporting plate.
The invention has the following beneficial effects:
1. the cavity inner core is provided with a plurality of clamping teeth, the clamping teeth are matched with the sliding block through the inclined plane, and when the clamping teeth move along the axial direction of the cavity inner core, the clamping teeth move along the inclined plane so as to enable the clamping teeth to clamp the nut along the radial direction, so that the self-adaptive contraction effect is achieved, and finally nuts of different specifications can be screwed;
2. the self-adaptive positioning of the nut can be realized under the action of the first hydraulic cylinder, and the fault tolerance of a positioning target in the automatic assembly process is increased;
3. the ratchet transmission mechanism can achieve single-stroke repeatable operation, improves the assembly operation efficiency, and avoids multiple collision to the nut corner angle during repeated clamping;
drawings
FIG. 1 is an exploded view of the overall construction of the self-aligning self-adaptive nut tightening apparatus of the present invention;
FIG. 2 is a front elevational view of the overall construction of the self-aligning self-adaptive nut tightening apparatus of the present invention;
FIG. 3 is a left side elevational view of the overall construction of the self-aligning self-adaptive nut tightening apparatus of the present invention;
FIG. 4 is a schematic cross-sectional structural view of the self-aligning self-adaptive nut tightening apparatus of the present invention;
FIG. 5 is a schematic structural view of the cavity core of the present invention;
FIG. 6 is a schematic view of a clamp tooth according to the present invention;
FIG. 7 is a schematic structural diagram of a slider according to the present invention;
FIG. 8 is a side view of the tooth and block of the present invention.
Wherein: 1-an adaptive positioning mechanism; 11-a support plate; 12-a first hydraulic cylinder; 13-a base plate; 14-a guide post; 2-ratchet drive mechanism; 21-a second hydraulic cylinder; 22-a housing; 221-end cap; 23-a ratchet wheel; 231-placing grooves; 24-a pawl; 25-a connecting seat; 26-a second spring; 3-a self-adaptive clamping mechanism; 31-a hollow core; 311-a groove; 312-T shaped through holes; 32-gripping teeth; 321-a clamping block; 322-a first stop; 323-first mating block; 323 a-first inclined plane; 33-a slide block; 331-a second mating block; 331 a-a second bevel; 332-a second stop; 333-support block; 34-a first spring; 35-a fixed seat; 36-a connecting rod; 361-round ball; 37-power device.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
Examples
Referring to fig. 1-3, a self-positioning self-adapting nut tightening device includes: the self-adaptive clamping device comprises a self-adaptive positioning mechanism 1, a ratchet transmission mechanism 2 and a self-adaptive clamping mechanism 3;
referring to fig. 1 to 3, the adaptive positioning mechanism 1 includes: the ratchet transmission mechanism 2 and the self-adaptive clamping mechanism 3 are arranged on the support plate 11, a bottom plate 13 is arranged at one end, away from the support plate 11, of the first hydraulic cylinder 12, two guide columns 14 which are the same as the power output direction of the first hydraulic cylinder 12 are arranged on the bottom plate 13, the support plate 11 is arranged on the guide columns 14 in a sliding mode, and in the embodiment, a protruding block structure with the outer diameter larger than that of the guide columns 14 is further arranged at the top ends of the guide columns 14 and used for preventing the support plate 11 from being separated from the upper end of the guide columns 14.
Referring to fig. 1 and 4, the ratchet drive mechanism 2 includes: the self-adaptive clamping mechanism comprises a second hydraulic cylinder 21 and a shell 22, wherein the second hydraulic cylinder 21 is hinged to the supporting plate 11, the shell 22 is hinged to a power output shaft of the second hydraulic cylinder 21, the second hydraulic cylinder 21 is arranged at one end close to the shell 22 in an inclined mode, the shell 22 is of a cylindrical structure with an opening at the front end, a shell 22 connecting seat 25 is arranged between the second hydraulic cylinder 21 and the shell 22, a second spring 26 is arranged in the shell 22 connecting seat 25, a ratchet wheel 23 rotationally connected with the shell 22 and a pawl 24 radially extending along the ratchet wheel 23 and matched with the ratchet wheel 23 are arranged in the shell 22, one end of the pawl 24 is matched with the ratchet wheel 23, the other end of the pawl 24 is connected with the second spring 26, the self-adaptive clamping mechanism 3 is arranged in the ratchet.
Referring to fig. 1, 2 and 4, the adaptive clamping mechanism 3 includes: the cavity inner core 31, a plurality of clamping teeth 32 arranged on the inner wall surface of the cavity inner core 31 and a slide block 33 arranged on the inner wall surface of the ratchet wheel 23 and matched with the clamping teeth 32 through an inclined surface, the clamping teeth 32 are arranged along the radial direction of the cavity inner core 31, one end of each clamping tooth 32 far away from the slide block 33 is arranged along the radial direction of the cavity inner core 31, a first spring 34 arranged along the radial direction of the cavity inner core 31 is arranged between each clamping tooth 32 and the cavity inner core 31, referring to fig. 5, the cavity inner core 31 is open at one end, the cross section (the cross section refers to a plane vertical to the axis of the cavity inner core) is in a regular hexagon cylindrical structure, and each wall surface is provided with one clamping tooth 32, namely, the total six clamping teeth 32 are arranged (for showing a clear structure, only one clamping tooth 32 and one slide block 33 are shown in the figure), referring to fig. 2, a power device, the cavity core 31 can be slid in the axial direction of the ratchet 23 to complete the clamping operation.
Referring to fig. 6, the longitudinal section of the clip tooth 32 is "cross" shaped, and the clip tooth 32 includes: the clamping device comprises a clamping block 321, a first stop block 322 with the width larger than that of the clamping block 321, and a first matching block 323 arranged on one side, far away from the clamping block 321, of the first stop block 322, wherein a first inclined plane 323a matched with the sliding block 33 is arranged on the surface of one end, far away from the first stop block 322, of the first matching block 323, a T-shaped through hole 312 matched with the first stop block 322 and the clamping block 321 in structure is arranged on the cavity inner core 31, a round hole for fixing a spring is formed in the T-shaped through hole 312, one end of the first spring 34 is fixedly arranged in the round hole of the T-shaped through hole 312, and the other end of the first spring 34 is fixedly arranged;
referring to fig. 7, the slider 33 has a cross-sectional shape, and the slider 33 includes: the second fitting block 331, the second stopper 332 with a width larger than that of the second fitting block 331, and the supporting block 333 arranged at one end of the second stopper 332 far away from the second fitting block 331 are provided with a second inclined surface 331a fitted with the first inclined surface 323a on the second fitting block 331, and the inner wall of the ratchet wheel 23 is provided with a placing groove 231 matched with the structure of the slider 33.
Referring to fig. 1 and 3, a connecting seat 25 and a connecting rod 36 arranged in the connecting seat 25 in an axial sliding manner along the cavity inner core 31 are arranged between a power device 37 at the rear end of the cavity inner core 31 and the closed end of the cavity inner core 31, the connecting seat 25 is fixed on the wall surface at the rear end of the cavity inner core 31 through screws, one end of the connecting rod 36 is connected with the power device 37, the other end of the connecting rod 36 penetrates through the connecting seat 25 and is arranged on the cavity inner core 31, a round ball 361 is arranged at one end of the connecting rod 36 close to the cavity inner core 31, a groove 311 matched with the round ball 361 in shape is arranged on the cavity inner core 31, and through holes matched with the connecting rod 36.
The specific operation of the device is described below with reference to fig. 1-8:
when the device is used for screwing the nut, the nut needs to be positioned through the self-adaptive positioning mechanism 1, then the nut is clamped through the self-adaptive clamping mechanism 3, and finally the nut is screwed through the ratchet transmission mechanism 2 to rotate.
The nut is placed in the inner core of the cavity, before the clamping operation, the first hydraulic cylinder 12 is in a semi-locking state, namely, the thrust provided by the first hydraulic cylinder is equal to the gravity of the entity above the supporting plate 11, when the self-adaptive clamping mechanism 3 performs the clamping action, the nut can provide the whole mechanism with a counterforce, and therefore the position of the supporting plate 11 is adjusted in a self-adaptive mode to achieve the positioning effect.
In the initial state of the clamping operation, the clamping teeth 32 are retracted into the T-shaped through holes 312 of the cavity core 31 by the supporting force of the first spring 34, so as to provide a space for placing the nut, and during the clamping operation, the power device 37 disposed at the rear end of the cavity core 31 drives the cavity core to move forward along the axis relative to the ratchet 23, and the clamping teeth 32 move along the cavity core 31 toward the front end surface of the outer shell 22, referring to fig. 8, which is a schematic view of the structure of the clamping teeth 32 and the sliding block 33, the first inclined plane 323a and the second inclined plane 331a are disposed in a relative fit manner, and when the clamping teeth 32 move along the cavity core in the axial direction, since the sliding block 33 is disposed in the ratchet 23 and is stationary, the clamping teeth 32 move along the second inclined plane 331a on the sliding block 33 in the axial direction, so as to clamp the nut.
When the clamping operation is completed, the first hydraulic cylinder 12 is in a fully locked state to ensure that the support plate 11 cannot float up and down during the tightening process, the second hydraulic cylinder 21 mounted on the support plate 11 drives the shell 22 to rotate counterclockwise (when viewed from the front end face of the shell 22), and at the moment, the pawl 24 abuts against the ratchet wheel 23 under the action of the second spring 26, and the ratchet wheel 23 is not moved, so that the condition is provided for continuous operation; when the second hydraulic cylinder 21 moves in the opposite direction to rotate the outer shell 22 clockwise, the ratchet wheel 23 can drive the cavity inner core 31 to rotate so as to achieve the tightening operation, and thus the tightening operation can be achieved by reciprocating.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A self-aligning, self-adapting nut tightening device, comprising: the self-adaptive clamping device comprises a self-adaptive positioning mechanism (1), a ratchet wheel transmission mechanism (2) and a self-adaptive clamping mechanism (3);
the adaptive positioning mechanism (1) comprises: the ratchet wheel transmission mechanism comprises a supporting plate (11) and a first hydraulic cylinder (12) arranged at the lower end of the supporting plate (11), wherein the ratchet wheel transmission mechanism (2) and the self-adaptive clamping mechanism (3) are arranged on the supporting plate (11);
the ratchet transmission mechanism (2) comprises: a second hydraulic cylinder (21) hinged with the support plate (11) and a shell (22) hinged with a power output shaft of the second hydraulic cylinder (21), wherein a ratchet wheel (23) rotationally connected with the shell (22) and a pawl (24) extending along the radial direction of the ratchet wheel (23) and matched with the ratchet wheel (23) are arranged in the shell (22), and the self-adaptive clamping mechanism (3) is arranged in the ratchet wheel (23);
the adaptive clamping mechanism (3) comprises: the ratchet structure comprises a cavity inner core (31), a plurality of clamping teeth (32) arranged on the inner wall surface of the cavity inner core (31) and a sliding block (33) arranged on the inner wall surface of the ratchet wheel (23) and matched with the clamping teeth (32) through an inclined surface, one end, far away from the sliding block (33), of each clamping tooth (32) is arranged along the radial extension of the cavity inner core (31), a first spring (34) arranged along the radial extension of the cavity inner core (31) is arranged between each clamping tooth (32) and the cavity inner core (31), and a power device (37) enabling the cavity inner core (31) to slide axially along the ratchet wheel (23) is arranged at one end of the cavity inner core (31).
2. The self-positioning self-adaptive nut screwing device according to claim 1, characterized in that the outer shell (22) is a cylindrical structure with one open end, and the open end of the outer shell (22) is provided with an annular end cover for preventing the inner core (31) of the cavity from being removed.
3. The self-positioning self-adaptive nut screwing device according to claim 1, wherein the second hydraulic cylinder (21) is obliquely arranged towards one end close to the outer shell (22), a connecting seat (25) is arranged between the second hydraulic cylinder (21) and the outer shell (22), a second spring (26) is arranged in the connecting seat (25), and one end, far away from the ratchet wheel (23), of the pawl (24) is connected with the second spring (26).
4. The self-positioning self-adaptive nut screwing device according to any one of claims 1 to 3, wherein the cavity inner core (31) is of a cylindrical structure with one open end, the power device (37) is arranged at the closed end of the cavity inner core (31), the closed end of the cavity inner core (31) is provided with a fixed seat (35), a connecting rod (36) arranged along the axial direction of the cavity inner core (31) is arranged in the fixed seat (35), one end of the connecting rod (36) is connected with the power device (37), and the other end of the connecting rod (36) penetrates through the fixed seat (35) to be rotatably arranged on the cavity inner core (31).
5. Self-aligning self-adapting nut tightening device according to claim 4, characterized in that said power means (37) use linear reciprocating hydraulic cylinders.
6. The self-positioning self-adaptive nut screwing device according to claim 4, wherein a round ball (361) is arranged at one end of the connecting rod (36) close to the cavity inner core (31), a groove (311) matched with the shape of the round ball (361) is arranged on the cavity inner core (31), and a through hole matched with the connecting rod (36) and the round ball (361) is arranged in the fixed seat (35).
7. The self-aligning self-adapting nut runner according to claim 6, characterized in that the longitudinal section of the clamping tooth (32) is cross-shaped, the clamping tooth (32) comprising: the clamping block (321), the width of the clamping block (321) are larger than a first stop block (322) of the clamping block (321) and arranged on the surface of one end of the first stop block (322), the first stop block (322) is far away from a first matching block (323) on one side of the clamping block (321), a first inclined plane (323a) matched with the sliding block (33) is arranged on the surface of one end of the first matching block (323), a T-shaped through hole (312) matched with the first stop block (322) and the clamping block (321) in structure is formed in the cavity inner core (31), one end of the first spring (34) is arranged in the T-shaped through hole (312), and the other end of the first spring (34) is arranged on the first stop block (322).
8. Self-positioning self-adapting nut screwing device according to claim 7, characterised in that said slider (33) has a cross-section, said slider (33) comprising: the width of the second stop block (332) is larger than that of the second matching block (331), the second stop block (332) and the supporting block (333) are sequentially arranged along the longitudinal direction, a second inclined plane (331a) matched with the first inclined plane (323a) is arranged on the second matching block (331), and a placing groove (231) matched with the structure of the sliding block (33) is formed in the inner wall of the ratchet wheel (23).
9. The self-positioning self-adaptive nut screwing device according to claim 8, characterized in that the cross section of the inner wall surface of the cavity inner core (31) is a regular hexagon matched with the structure of the nut, and the clamping teeth (32) are arranged along the radial direction of the cavity inner core (31).
10. The self-positioning self-adaptive nut screwing device according to claim 1, wherein a bottom plate (13) is arranged at one end of the first hydraulic cylinder (12) far away from the support plate (11), a plurality of guide posts (14) in the same power output direction as the first hydraulic cylinder (12) are arranged on the bottom plate (13), and the support plate (11) is slidably arranged on the guide posts (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110059458.4A CN112846741B (en) | 2021-01-15 | 2021-01-15 | Self-positioning and self-adaptive nut screwing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110059458.4A CN112846741B (en) | 2021-01-15 | 2021-01-15 | Self-positioning and self-adaptive nut screwing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112846741A true CN112846741A (en) | 2021-05-28 |
| CN112846741B CN112846741B (en) | 2022-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110059458.4A Expired - Fee Related CN112846741B (en) | 2021-01-15 | 2021-01-15 | Self-positioning and self-adaptive nut screwing device |
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| CN (1) | CN112846741B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0734797A (en) * | 1993-07-20 | 1995-02-03 | Hitachi Zosen Corp | Nut runner for screw-setting machine |
| CN101200057A (en) * | 2006-10-30 | 2008-06-18 | 前田金属工业株式会社 | Bolt or nut tightening device |
| CN201073699Y (en) * | 2006-12-30 | 2008-06-18 | 李新平 | Self-locking hand-holding drill chuck |
| CN101450469A (en) * | 2007-12-04 | 2009-06-10 | 史丹利七和国际股份有限公司 | Ratchet wrench of adjustable clamping jaw and ratchet handle |
| CN202239713U (en) * | 2011-09-27 | 2012-05-30 | 勤威(天津)工业有限公司 | Three-jaw fixture for processing of disc castings of cars |
| CN205817674U (en) * | 2016-06-28 | 2016-12-21 | 雷金荣 | Reversible ratcheting tool |
| US20170120424A1 (en) * | 2015-11-03 | 2017-05-04 | Shwu-Ruu Chern | Ratchet wrench |
| CN108544409A (en) * | 2018-07-02 | 2018-09-18 | 四川汇智众创科技有限公司 | A kind of Quick fastening spanner being applied to interlocking double nut |
| CN110142722A (en) * | 2019-05-27 | 2019-08-20 | 安徽黎搏装饰工程有限公司 | A kind of construction nut remover |
| CN211332951U (en) * | 2019-10-23 | 2020-08-25 | 昆明理工大学 | Adjustable ratchet wrench structure |
| CN211805822U (en) * | 2020-03-31 | 2020-10-30 | 攀枝花学院 | Electric spanner |
-
2021
- 2021-01-15 CN CN202110059458.4A patent/CN112846741B/en not_active Expired - Fee Related
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0734797A (en) * | 1993-07-20 | 1995-02-03 | Hitachi Zosen Corp | Nut runner for screw-setting machine |
| CN101200057A (en) * | 2006-10-30 | 2008-06-18 | 前田金属工业株式会社 | Bolt or nut tightening device |
| CN201073699Y (en) * | 2006-12-30 | 2008-06-18 | 李新平 | Self-locking hand-holding drill chuck |
| CN101450469A (en) * | 2007-12-04 | 2009-06-10 | 史丹利七和国际股份有限公司 | Ratchet wrench of adjustable clamping jaw and ratchet handle |
| CN202239713U (en) * | 2011-09-27 | 2012-05-30 | 勤威(天津)工业有限公司 | Three-jaw fixture for processing of disc castings of cars |
| US20170120424A1 (en) * | 2015-11-03 | 2017-05-04 | Shwu-Ruu Chern | Ratchet wrench |
| CN205817674U (en) * | 2016-06-28 | 2016-12-21 | 雷金荣 | Reversible ratcheting tool |
| CN108544409A (en) * | 2018-07-02 | 2018-09-18 | 四川汇智众创科技有限公司 | A kind of Quick fastening spanner being applied to interlocking double nut |
| CN110142722A (en) * | 2019-05-27 | 2019-08-20 | 安徽黎搏装饰工程有限公司 | A kind of construction nut remover |
| CN211332951U (en) * | 2019-10-23 | 2020-08-25 | 昆明理工大学 | Adjustable ratchet wrench structure |
| CN211805822U (en) * | 2020-03-31 | 2020-10-30 | 攀枝花学院 | Electric spanner |
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| Publication number | Publication date |
|---|---|
| CN112846741B (en) | 2022-01-11 |
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