CN210360211U

CN210360211U - Easy-to-withdraw threaded connection device based on slope mechanical effect

Info

Publication number: CN210360211U
Application number: CN201921100590.XU
Authority: CN
Inventors: 艾方德
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-12
Filing date: 2019-07-12
Publication date: 2020-04-21
Anticipated expiration: 2029-07-12

Abstract

The utility model relates to an easy-to-withdraw thread connecting device based on slope mechanical effect, which comprises a power input part (1), an easy-to-withdraw torque part (2) and a power output part (3), wherein the power input part (1) and the power output part (3) are axially connected with each other; the easy-to-withdraw torque part (2) is arranged at the axial connecting position between the power input part (1) and the power output part (3), and the easy-to-withdraw torque part (2) consists of a pressure plate (21) and a withdrawing plate (22); one surface of the pressure plate (21) is provided with a pressure surface (211), and the other surface is provided with driven teeth (212) with a first inclined surface (213); one surface of the disc withdrawing (22) is provided with a driving tooth (221) with a second inclined surface (222), and the driving tooth (221) is matched and corresponding to the driven tooth (212) of the pressure plate (21); the utility model discloses laborsaving, save time during the use, from this, not only simplify and move back and take off the process, reduced working strength again, effectual improvement work efficiency, and then reduce construction cost.

Description

Easy-to-withdraw threaded connection device based on slope mechanical effect

Technical Field

The utility model relates to a threaded connection structure especially needs often to turn round into screw up, turn round the pine and withdraw from the threaded connection device of repeated operation.

Background

In mechanical operation, sometimes a power output end of a machine is required to be connected with a certain object to drive the certain object to do motions in the forms of rotation, stirring, extraction, falling, overturning and the like. In various connection modes, a common external clamping and pressing connection scheme is that the connection is carried out by wrapping and pressing the surface of an object like a lathe chuck. The connecting mode of clamping and pressing the surface of an object usually needs a part performing the function of pressing to surround the object to be pressed from the outside, and a movable pressing component is arranged, so that the connecting component is usually relatively large in volume and weight and is more suitable for being arranged on fixed or pushed large-scale equipment; the two types of conventional screw connection schemes are similar to the screw change-over head on the hand-held electric wrench which is widely used, and the two types of conventional screw connection schemes are connected by the engagement of the screw thread on the power output end and the screw thread on the connected object. Because the connection mode does not need a movable pressing component, only needs a small and simple pair of threads, the connection mode has the characteristics of simplicity, small volume and light weight, and is more suitable for hand-held tools.

In a subdivided field of application of threaded connection structures, nuts and screws (or ribs) are commonly used in daily production and life. One type of nut is shorter, and is mainly used for being screwed on a screw rod to limit objects connected in series on the screw rod. Another type of relatively long nut is used primarily to join two bars or bars by screwing them into threads on the ends of the bars or bars. The first step, screw a part of the first long nut into the first pole or threaded head of one end of the muscle; the second step is to screw the head of a second rod or bar at one end into another portion of the first long nut. Thus, two bars or ribs are connected by the long nut in the middle, and the second long nut, the third bar, the third long nut and the fourth bar … … can be connected repeatedly until the required length is reached.

The relatively long nut connecting structure is widely used in factories and construction sites, and particularly, the relatively concentrated and large amount of the relatively long nut connecting structure is connected with the steel bars on the construction site. The relatively long nuts used to connect the rebar are often referred to as rebar sleeves. Connection sites are largely classified into two categories. One type of occasion is centralized operation, two steel bars are pre-connected for standby through steel bar sleeves on a certain ground or platform, and the occupation ratio is extremely small. The second type of occasion is a distributed operation, in which later reinforcing bars are connected with reinforcing bars previously embedded in a concrete wall through reinforcing bar sleeves on various wall bodies. One category of applications uses both hand-held and hands-free heavy mechanical forces. In the second category, since the work sites are mostly distributed in the air, it is usually only suitable to use hand-held mechanical force. In the prior construction, most of the parts are screwed in by fingers manually until the parts are difficult to screw by bare hands, and then the parts are screwed by an stressing wrench. The long nut or the reinforcing steel bar thread head is long due to a plurality of threads, time-consuming and labor-consuming screwing by manpower rotation, extremely low in production efficiency, and high in production efficiency due to the fact that mechanical forces such as electric force and pneumatic force need to be connected, but the thread conversion head which is commonly used by people is adopted, the thread conversion head is connected to a mechanical power output end in an inserting mode, then the positive rotation is started, the threads of the thread conversion head are rotated to be connected well in the threads of the reinforcing steel bar sleeve, and then the reinforcing steel bar sleeve is driven to rotate to be screwed into the reinforcing steel bar thread head, approximately symmetrical mechanical structures are formed at two ends of the reinforcing steel bar sleeve, and symmetrical mechanical effects are easily generated after the mechanical effects are caused. Therefore, the problem that is easily caused in the process of starting the reverse rotation to withdraw the thread switching head from the reinforcing steel bar sleeve is that: firstly, make the threaded connection at steel bar sleeve both ends all loosen easily, destroy the operation result of the threaded connection between steel bar sleeve and the reinforcing bar silk head that just formed, secondly need great counter-torque force, like the technique recorded in the utility model of "a steel bar connection telescopic links up and sets up device (notice number CN 206883564U)" that the national intellectual property office announced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving current threaded connection and having foretell technical problem, provide an easily move back and take off threaded connection device based on domatic mechanical effect, can use with power tool combinations such as hand-held type electric torque rifle to quick installation and withdraw from connection structure improve work efficiency.

The utility model discloses the purpose can be realized through following technical scheme:

the easy-to-withdraw threaded connection device based on the slope mechanical effect comprises a power input part, an easy-to-withdraw torque part and a power output part, wherein the power input part and the power output part are axially connected with each other; the easy-to-retreat torque part is arranged at the axial connecting position between the power input part and the power output part and consists of a pressure plate and a retreat plate; one side of the pressure plate is provided with a pressure surface, and the other side of the pressure plate is provided with driven teeth with a first inclined surface; one side of the disc withdrawing is provided with a driving tooth with a second inclined surface, and the driving tooth is matched and corresponds to the driven tooth of the pressure plate; the pressure plate and the withdrawing plate are arranged at the axial connecting position between the power input part and the power output part in a relative sliding displacement mode, and when a relative motion trend is formed between the power input part and the power output part, the pressure plate or the withdrawing plate is a rotating plate, the power input part drives the power output part to rotate, the driven teeth and the driving teeth form thrust for reverse movement of the pressure plate and the withdrawing plate under the action of the first inclined surface and the second inclined surface, so that a withdrawal moment interval with compression resistance is maintained or generated or expanded between the pressure plate and the withdrawing plate and is smaller than the meshing depth H between the driven teeth of the pressure plate and the driving teeth of the withdrawing plate, and the easy-withdrawal threaded connecting device with the slope mechanical effect is formed.

Furthermore, the power input part and the power output part are of an integrated structure, the power input part and the power output part are formed by a rotating rod, the power input part is a cylindrical rod part at one end of the rotating rod, the power output part is a threaded rod part at the other end of the rotating rod, and the axial connecting position is a body mounting position of the cylindrical rod part.

Furthermore, the power input part and the power output part are of split structures, and the axial connecting position is a connecting cylinder mounting position arranged on the power input part or the power output part.

Furthermore, the power input part is a connecting piece, one end of the connecting piece is provided with a first connecting head, and the other end of the connecting piece is provided with a pressure head screw rod; the power output part is a connecting piece, one end of the connecting piece is provided with a first mounting thread, the other end of the connecting piece is provided with a mounting cylinder body, the mounting cylinder body is provided with a fixing screw hole, and the connecting cylinder body is a matching part for mounting a pressure plate and withdrawing the pressure plate on the mounting cylinder body.

Furthermore, the power input part is a column mounting part, one end of the column mounting part is provided with a second connector, and the other end of the column mounting part is provided with a mounting screw hole; the power output part is a connecting rod, an axial limit and a radial limit are arranged on the connecting rod, one end of the connecting rod is provided with a first connecting thread, and the other end of the connecting rod is provided with a second mounting thread; the connecting rod is installed on the installation screw of cylinder installed part through connecting thread one, the pressure disk rotate and install on the axial limiting position of connecting rod, move back a set non-rotation slidingtype and install on the radial limiting position of connecting rod, the connection cylinder is the cooperation position of installation pressure disk and moving back a set on the connecting rod.

Furthermore, the side of the pressure plate is provided with butt threads, a conical pushing piece is screwed on the butt threads, and the conical pushing piece is sleeved at the axial limiting position of the connecting rod and is fixed with the butt threads of the pressure plate in a screwed mode.

Furthermore, an elastic piece is arranged between the driven tooth of the pressure plate and the driving tooth of the disc withdrawing, and a sheath is arranged on the outer sides of the pressure plate and the disc withdrawing.

Furthermore, the power input part is a connecting piece, one end of the connecting piece is provided with a connector III, the other end of the connecting piece is provided with a circular sleeve, and a connecting internal thread is arranged in the circular sleeve; the power output part is a connecting piece, one end of the connecting piece is provided with a third mounting thread, the other end of the connecting piece is provided with a cylinder connector, the cylinder connector is provided with a fixed threaded hole, the connecting cylinder is a matching part of a pressure plate and a withdrawing disc mounted on the cylinder connector, the pressure plate of the easy-withdrawing torque part is a non-rotating axial sliding disc, the withdrawing disc comprises a movable disc and a fixed disc, driving teeth of the withdrawing disc are driving teeth respectively arranged on two sides of the movable disc, the movable disc is rotatably mounted on the cylinder connector, the outer wall of the movable disc is provided with a connecting external thread, and one side of the outer wall is provided with a limiting bulge; the fixed disc is an annular fixed part provided with locking teeth, the locking teeth are provided with inclined planes III, and the locking teeth of the fixed disc are correspondingly matched with the transmission teeth on one surface of the movable disc to form a space for limiting the moment of retreat of the movable disc between the pressure disc and the fixed disc; the pressure plate, the movable plate and the fixed plate are arranged on the column connecting head in a matching way through a screw and a fixed threaded hole; the external thread of the movable disc is correspondingly matched with the internal thread of the circular sleeve on the power input part, so that the power input part, the easy-to-withdraw torque part and the power output part are connected with each other to form a rotating body.

Furthermore, the power input part comprises a fixed connector and an outer sleeve which are arranged on the disc withdrawing; the power output part comprises convex teeth which are annularly distributed on the pressing surface of the pressure plate and a top column at the center of the convex teeth which are annularly distributed, one side of each convex tooth is provided with an installation threaded sleeve, the installation threaded sleeve is fixedly installed on the outer sleeve, one end of each installation threaded sleeve is provided with a notch, and the notches are correspondingly meshed with the convex teeth; the axial connecting position is an installation inner cavity formed when the installation screw sleeve is matched with the outer sleeve, the pressure plate and the withdrawing disc of the part easy to withdraw the torque are installed on the installation inner cavity, the length of the installation inner cavity is larger than the thickness of the pressure plate and the withdrawing disc when the pressure plate and the withdrawing disc are matched, and is equal to the sum of the total thickness of the distance between the withdrawing moment and the total thickness of the pressure plate and the withdrawing disc when the pressure plate and the withdrawing disc are mutually meshed to the tooth bottom.

Furthermore, the outer wall of the installation screw sleeve is provided with a reverse external thread, the reverse external thread is provided with a stopping sleeve provided with a reverse internal thread, and the stopping sleeve is positioned at one end of the outer sleeve.

The utility model has the following outstanding substantive characteristics and remarkable progress:

the utility model adopts the part with the torque easy to return to be composed of a pressure plate and a return plate; one side of the pressure plate is provided with a pressure surface, and the other side of the pressure plate is provided with driven teeth with a first inclined surface; the driving teeth with the second inclined planes are arranged on one disc withdrawing surface, the driving teeth are matched and correspond to the driven teeth of the pressure plate, forward torsion is in differential connection and non-simultaneous action between the disc withdrawing surface and the pressure plate, the tendency of mutual climbing of the disc withdrawing surface and the pressure plate is generated, and the distance between the compression-resistant withdrawing moments is maintained or generated or expanded. The distance of the withdrawing moment is smaller than the depth H of engagement between the driven teeth of the pressure plate and the driving teeth of the withdrawing plate, so that an easy-withdrawing thread connection structure with a slope mechanical effect is formed. After a mechanical force power output end tool (such as an electric wrench) drives a power output part to install connecting pieces such as a steel bar sleeve or a steel bar thread head on a workpiece, reverse torque force is in difference connection and non-simultaneous action between a withdrawing disc and a pressure disc, and mutual sliding movement of the withdrawing disc and the pressure disc is generated, so that the original withdrawing moment interval is easy to compress, the power output part can be easily withdrawn, the connecting pieces are installed (remained) on the workpiece, labor and time are saved during use, therefore, the withdrawing process is simplified, the working strength is reduced, the working efficiency is effectively improved, and the construction cost is further reduced.

Drawings

Fig. 1 and 2 are perspective structural views of embodiment 1 of the present invention.

Fig. 3 is an installation diagram of embodiment 1 of the present invention.

Fig. 4 is a perspective view of embodiment 2 of the present invention.

Fig. 5 is an installation schematic diagram of embodiment 2 of the present invention.

FIG. 6 is a schematic diagram of the operation of a prior art planar structure

Fig. 7 is a schematic diagram of the operation of the first inclined plane and the second inclined plane of the torque-easy-to-retract portion of embodiment 2 of the present invention.

Fig. 8 is a perspective view of embodiment 3 of the present invention.

Fig. 9 is an installation diagram of embodiment 3 of the present invention.

Fig. 10 is a perspective view of embodiment 4 of the present invention.

Fig. 11 is an installation diagram of embodiment 4 of the present invention.

Fig. 12 is a perspective view of embodiment 5 of the present invention.

Fig. 13 is an installation diagram of embodiment 5 of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings

Example 1

Referring to fig. 1 to 3, the easy-to-withdraw threaded connection device based on the slope mechanical effect comprises a power input part 1, an easy-to-withdraw torque part 2 and a power output part 3, wherein the power input part 1 and the power output part 3 are axially connected with each other; the easy-to-withdraw torque part 2 is arranged at the axial connecting position between the power input part 1 and the power output part 3, the easy-to-withdraw torque part 2 consists of a pressure plate 21 and a withdrawing disc 22, the pressure plate 21 and the withdrawing disc 22 are both in an annular structure, one surface of the pressure plate 21 is provided with a pressure surface 211, and the other surface of the pressure plate 21 is provided with a driven tooth 212 with a first inclined surface 213; one side of the disc ejecting 22 is provided with a driving tooth 221 with a second inclined surface 225, and the driving tooth 221 is matched and corresponding to the driven tooth 212 of the pressure plate 21; the first inclined plane 213 and the section plane of the pressure plate 21 are inclined at an angle of 1-44 degrees, and the second inclined plane 225 and the section plane of the disc ejecting plate 22 are inclined at an angle of 1-44 degrees.

The pressure plate 21 and the disc 22 are installed on the axial connecting position between the power input part 1 and the power output part 3 in a relative sliding displacement mode, wherein the pressure plate 21 or the disc 22 is a rotating disc which slightly rotates, namely, the rotating disc relatively rotates at the axial connecting position by utilizing a gap between the driven tooth 212 and the driving tooth 221 in a small distance, and specifically, the installation mode of the relative sliding displacement mode comprises the steps that 1, the disc 22 is fixedly installed, the pressure plate 21 is movably installed, and the pressure plate 21 can axially move and rotate in a small distance relative to the disc 22 at a limited position; 2. the pressure plate 21 and the stripper plate 22 are mounted in a sliding manner, and the pressure plate 21 and the stripper plate 22 are moved axially relative to each other in a defined position, wherein the pressure plate 21 or the stripper plate 22 can be rotated. The power input part 1 drives the power output part 3 to rotate, when the pressure plate 21 and the disc ejecting 22 form relative rotation, the driven teeth 212 and the driving teeth 221 form thrust of reverse movement of the pressure plate 21 and the disc ejecting 22 under the action of the first inclined plane 213 and the second inclined plane 225, so that the compression-resistant back torque interval 4 is maintained or generated or expanded between the pressure plate 21 and the disc ejecting 22, specifically, the relative rotation between the pressure plate 21 and the disc ejecting 22 comprises the formation of the back torque interval 4 between the rotation of the pressure plate 21 and the disc ejecting 22, or the formation of the back torque interval 4 between the rotation of the disc ejecting 22 and the pressure plate 21, wherein the back torque interval 4 is specifically formed by the interaction of a mutually reverse rotation climbing trend (i.e. a movement state of reverse rotation dislocation) formed between the first inclined plane 213 of the pressure plate 21 and the second inclined plane 225 of the disc ejecting 22 and an axial movement reserved interval between axial connections of the pressure plate 21 and the disc ejecting 22, the distance 4 of the back moment is smaller than the depth H of engagement between the driven teeth 212 of the pressure plate 21 and the driving teeth 221 of the back plate 22, so that the easy-to-back thread connecting device with the slope mechanical effect is formed.

In the embodiment, the power input part 1 and the power output part 3 are of an integral structure, the power input part 1 and the power output part 3 are formed by a rotating rod, the power input part 1 is a cylindrical rod part 5 at one end of the rotating rod, one end of the cylindrical rod part 5 is made into a convex polygonal plug, the convex polygonal plug is directly butted with a concave polygonal socket on a power output end, the power output part 3 is a threaded rod part 6 at the other end of the rotating rod, the axial connection position is a body installation position of the cylindrical rod part 5, the length of the cylindrical rod part 5 is slightly larger than the thickness of the pressure plate 21 and the backing plate 22 and is smaller than the sum of the thickness of the pressure plate 21 and the backing plate 22 and the meshing depth H between the driven teeth 212 and the driving teeth 221 of the backing plate 22, the backing plate 21 and the backing plate 22 can form the backing distance 4, namely the pressure plate 21 and the backing plate 22 are installed at the position of the cylindrical, specifically, the pressure plate 21 is rotatably mounted at one end of the cylindrical rod portion 5 near the threaded rod portion 6, and the retraction plate 22 and the rotating rod can be fixedly mounted at the other end of the cylindrical rod portion 5 by welding or/and screwing.

An elastic piece 71 is filled between the driven teeth 212 of the pressure plate 21 and the driving teeth 221 of the disc 22, the elastic piece 71 is an elastic body such as a rubber block or a spring, and a sheath 7 is arranged on the outer sides of the pressure plate 21 and the disc 22. Specifically, since the mutual climbing tendency between the first inclined surface 213 of the pressure plate 21 and the second inclined surface 225 of the escape plate 22 is not strong when the forward rotation speed is not high, and the friction resistance surface is wetted, and when the pressing surface 211 of the platen 21 is pressed, when the slope action of the first inclined plane 213 and the second inclined plane 225 is stronger than the slope action, the second inclined plane 225 of the driving tooth 221 on the backing plate 22 and the first inclined plane 213 of the driven tooth 212 on the pressure plate 21 are easy to be too close to the tooth bottom (the tooth biting can be said to be too tight), even the opposite surfaces of the driving tooth 221 and the driven tooth 212 are completely overlapped, the tooth tops of the driving tooth 221 and the driven tooth 212 can enter the tooth bottom of the other side (the tooth tops are the top positions of the driving tooth 221 and the driven tooth 212, and the tooth bottoms are the bottom positions of the depth positions of the driving tooth 221 and the driven tooth 212), so that the back torque interval 4 cannot be formed, and the back-off function is difficult to complete (torque needs to be increased). To counter this situation, an elastic member 71, i.e., an elastic body such as a rubber block or a spring, may be inserted into the meshing gap between the driving tooth 221 and the driven tooth 212 to prevent the driving tooth 221 and the driven tooth 212 from being meshed and dislocated to generate the back torque gap 4. Meanwhile, in order to prevent the elastic member 71 from easily falling off due to rotation and vibration when the pressure plate 21 and the ejection plate 22 are used, the position surrounding the meshing position of the driving teeth 221 and the driven teeth 212 is surrounded by a sheath 7, the sheath 7 can be tightly bound by an adhesive tape or surrounded by a metal ring with an inner diameter slightly larger than the outer diameter of the pressure plate 21 and the ejection plate 22, and the pressure plate 21 and the ejection plate 22 are provided with protrusions for limiting the metal ring.

In order to resist the slope tendency, resistance increasing lines can be engraved on the pressing surface 211 on the pressing plate 21, the resistance increasing lines can be lines similar to those on wheels and are used for increasing the friction force between the pressing surface 211 and the end surface of the threaded steel bar sleeve, when the pressing plate 21 is locked by larger friction resistance, the steel bar sleeve and the withdrawing disc 22 are not easy to be extruded to generate relative rotation, so that the withdrawing moment interval 4 is reduced, the driving tooth 221 and the driven tooth 212 are better prevented from sliding into the tooth bottoms of each other, and when the driving tooth 221 and the driven tooth 212 reversely rotate and withdraw, the mutually sliding spaces are lost.

The relative macro process applied in this embodiment is to plug the power input plug 1 of the device into the socket installed on the mechanical power output end for standby, according to the working condition and requirement, the reinforcing steel bar sleeve can be twisted several threads on the reinforcing steel bar thread head by hand, then the threaded rod part 6 on the power output part 3 is aligned to the reinforcing steel bar sleeve thread opening, the forward rotation is started, the twisting is carried out in the reinforcing steel bar sleeve, after the pressing surface 211 is pressed to one end surface of the reinforcing steel bar sleeve, the rotating drives the reinforcing steel bar sleeve to be twisted on the reinforcing steel bar thread head. Or the screw thread part 6 on the power output part 3 can be firstly twisted into the steel bar sleeve directly when the machine is started and the machine is stopped after the pressing surface 211 is pressed to one end surface of the steel bar sleeve. And aligning the screw opening of the steel bar sleeve with the steel bar wire head, starting the forward rotation again, and twisting the steel bar sleeve into the steel bar wire head. After the steel bar sleeve is twisted in place, the forward rotation machine is stopped, the reverse rotation machine is started, the threaded rod part 6 on the power output part 3 is withdrawn from the steel bar sleeve, and the threaded connection between the steel bar sleeve which is just formed and the steel bar screw head is required to be ensured to be reserved as an operation result and not to be damaged by reverse torque force.

The relatively microscopic process applied in this example is:

when the forward rotation is started (the forward rotation is the direction faced by the second inclined surface 225 of the driving tooth 221 of the disc 22, i.e., the direction indicated by F1 in fig. 1), the movement change of the easy-to-retract torque part 2 is that the disc 22 fixed on the cylindrical rod part 5 rotates synchronously forward first, and only the pressure plate 21 sleeved on the cylindrical rod part 5 tends to rotate reversely with the disc 22 under inertia (if the disc 22 rotates clockwise forward, the pressure plate 21 tends to rotate counterclockwise relative to the disc 22 under inertia), so that the second inclined surface 225 and the first inclined surface 213 tend to approach each other and climb each other, and the retract distance 4 is maintained or generated or increased. Until the pressure plate 21 is clamped by the second inclined surface 225 and the step surface at the interface between the threaded rod part 6 and the cylindrical rod part 5, the pressure plate 21 is pushed to rotate synchronously in the positive direction, and the stage maintains or generates or expands the compression-resistant back moment distance 4 (the distance 4 may be a long term, and the stage generates a mutual climbing tendency, and usually the back moment distance 4 is maintained or generated or expanded and is not reduced in most cases).

When the screw rod part 6 on the power output part 3 is rotationally screwed into the steel bar sleeve and one end surface of the steel bar sleeve is contacted with the pressing surface 211, the end surface of the steel bar sleeve starts to form pressure on the pressing surface 211. Then, in the process of driving the reinforcing steel bar sleeve to rotate and twist the reinforcing steel bar head, the end face of the reinforcing steel bar sleeve can continuously generate pressure action on the pressing surface 211, and in the twisting process, when the thread surface of the reinforcing steel bar head is abnormal and is twisted tightly, a pressure peak value can be generated. These pressures have the effect of causing the second inclined surfaces 225 of the driving teeth 221 on the stripper plate 22 and the first inclined surfaces 213 of the driven teeth 212 on the pressure plate 21 to slide towards each other, tending to compress said stripper space 4. However, due to the mutual climbing effect generated by the difference distribution of the positive torque force and the effect of the pressure and the friction resistance between the second inclined surface 225 and the first inclined surface 213 and the effect of the friction resistance between the pressing surface 211 and the end surface of the steel bar sleeve, the slope effect caused by the pressure is balanced, a certain axial supporting effect can be exerted between the inclined surfaces, the compression resistance is shown by the back-off distance 4, and the certain back-off distance 4 between the pressing plate 21 and the back-off plate 22 can still be maintained.

When a mechanical force power output end (such as an electric wrench) rotates and twists a reinforcing steel bar sleeve into a reinforcing steel bar head to a certain position and stops forward rotation force, the first inclined surface 213 of the driven tooth 212 generates pressure on the second inclined surface 225 of the driving tooth 221 through the potential energy stored by elastic deformation, and the pressure generates mutual friction resistance on one hand and generates component force in a reverse rotation direction acting on the second inclined surface 225 on the other hand. Asymmetric mechanical structures are formed at two ends of the reinforcing steel bar sleeve, namely the reinforcing steel bar sleeve is in relatively weak threaded connection with the device and easy to withdraw, and the reinforcing steel bar sleeve is in relatively strong threaded connection with the reinforcing steel bar thread head and not easy to loose. The structure is just matched with the working requirement, the connection between the steel bar sleeve and the device needs to be released, and the connection between the steel bar sleeve and the steel bar thread head needs to be reserved as an operation result.

Then, when the reverse rotation is started (the reverse rotation is the direction opposite to the second inclined surface 225 of the driving tooth 221 of the disc 22, i.e. the direction indicated by F2 in fig. 1), the potential energy stored by the original elastic deformation causes the pressure plate 21 to generate a component force acting on the disc 22 to cause the disc 22 to generate a reverse rotation trend, and the disc 22 can be rotated reversely by only needing a smaller reverse rotation torque force. If the reverse rotation is counterclockwise, the backing plate 22 firstly starts to synchronously rotate counterclockwise, the pressure plate 21 has a clockwise rotation trend relative to the backing plate 22 under the action of inertia and the friction resistance of one end face of the steel bar sleeve to the pressure face 211, so that mutual landslide motion is generated between the pressure plate 21 and the backing plate 22, the axial supporting effect between the inclined faces is eliminated, and the original backing moment space 4 is easy to compress.

Because the second face 222 of the driving tooth 221 on the stripper plate 22 and the first face 213 of the driven tooth 212 on the pressure plate 21 are slope (or inclined) faces, a small mutual rotation angle can generate larger axial size shrinkage under pressure, so that the stripper space 4 is compressed more quickly. When the compressed length of the original torque-withdrawing space 4 exceeds the original elastic deformation, the pressure between the second inclined plane 225 of the driving tooth 221 on the withdrawing disc 22 and the first inclined plane 213 of the driven tooth 212 on the pressure plate 21 is reduced to zero, so that the pressure between the pressure surface 211 of the pressure plate 21 and the end surface of the steel bar sleeve is reduced to zero, the pressure surface 211 and the threaded rod part 6 on the power output part can swing to be released from the pressure locking state, and the steel bar sleeve can rotate and withdraw easily. The threaded connection between the steel bar sleeve and the steel bar thread head is reserved as an operation result, and an asymmetrical operation result is obtained.

Example 2

The technical feature of this embodiment is that, referring to fig. 4 and 5, the power input part 1 and the power output part 3 are of a split structure, and the axial connection position is the installation position of the connection cylinder 8 provided on the power input part 1 or the power output part 3. The power input part 1 is a connecting piece, one end of the connecting piece is provided with a first connecting head 1-1, and the other end of the connecting piece is provided with a pressure head screw rod 1-2; the power output part 3 is a connecting piece, one end of the connecting piece is provided with a first mounting thread 1-3, the other end of the connecting piece is provided with a mounting column body 1-4, the mounting column body 1-4 is provided with a fixing screw hole 1-5, and the connecting cylinder 8 is a matching position of a mounting pressure plate 21 and a back plate 22 on the mounting column body 1-4. The pressure plate 21 and the backing plate 22 of the easy-backing torque part 2 are mounted on the mounting columns 1-4. The inner diameter of a central hole of the disc withdrawing 22, which is close to a part of the length of the pressure head screw rod 1-2, is slightly larger than the outer diameter of the pressure head screw rod 1-2 and is smaller than the outer diameter of the mounting column body 1-4, and the part is pressed on the end surface of the mounting column body 1-4 by a convex cap on the pressure head screw rod 1-2. The inner diameter of the hole in the remaining length of the center of the disc 22 is slightly larger than the outer diameter of the mounting column 1-4, and the disc can be sleeved on the mounting column 1-4 (the disc 22 and the mounting column 1-4 can be prevented from mutual rotation in a limiting key 1-41 mode, a convex rib can be manufactured on the inner wall of the disc 22, a groove is manufactured at the corresponding position outside the mounting column 1-4, and the convex rib is simultaneously inserted into the groove when the mounting column 1-4 is sleeved on the disc 22).

Specifically, the power input part 1 is arranged on a fixed screw hole 1-5 on an installation column 1-4 of the power output part 3 through a pressure head screw rod 1-2, and a pressure plate 21 and a withdrawing plate 22 are sleeved on the installation column 1-4 of the power output part 3 in sequence. The pressure plate 21 is installed at the front end of the installation column body 1-4, the disc withdrawing 22 is located on the outer side of the pressure plate 21, the disc withdrawing 22 and the installation column body 1-4 are clamped and positioned through the limiting keys 1-41, and the disc withdrawing 22 is prevented from rotating on the installation column body 1-4. In order to reduce the weight, lightening holes are formed inside the installation columns 1-4 and the installation screw threads 1-3, and the insides of the lightening holes are hollow.

When the power output part needs to work in the environment with much fog, poor sight and the like at night and the like, a conical guide head 1-31 is arranged at the front end of a mounting thread 1-3 of the power output part 3, and the conical guide head 1-31 is easily inserted into a mounted steel bar sleeve, so that the alignment process is simplified, the alignment difficulty is reduced, and the working efficiency is improved. The conical guide heads 1-31 can be arranged into a split type, and can also be arranged into a whole with the mounting threads I1-3. The conical guide head integrated structure is as follows: when the mounting screw threads 1-3 are manufactured, a plurality of strip-shaped bodies are arranged at one end of the mounting screw threads 1-3 and are bent to be evenly distributed annularly to form a conical shape. The split type structure of the conical guide head is as follows: after the conical body is made, the conical body is connected with the end part of the 1-3 section of the mounting thread in a welding, bonding, screwing mode and other modes.

The first connecting head 1-1 at one end of the power input part 1 is arranged into a hexagonal head plug for connecting with a hexagonal socket of a mechanical power output end (such as an electric wrench). In addition, the first connector 1-1 can be made into a hexagonal socket, a square socket and other plug-in modes to be correspondingly connected with the adopted mechanical power output end hexagonal socket, square plug and other plug-in modes.

When the power output part 3 works, the mounting threads I1-3 of the power output part 3 are aligned to a steel bar sleeve to be mounted, and the steel bar sleeve can be also called a steel bar joint, a steel bar straight thread sleeve, a steel bar conical thread sleeve and the like. When a mechanical force power output end (such as an electric wrench) is started to rotate in the forward direction, the mechanical force power output end transmits torque to a connecting head I1-1 of a power input part 1, the connecting head I1-1 drives an installation cylinder 1-4 and an installation thread I1-3 to rotate through a pressure head screw rod 1-2, the installation cylinder 1-4 drives a disc withdrawing 22 to rotate synchronously, and only a pressure plate 21 sleeved on the installation cylinder 1-4 has a tendency of rotating in the opposite direction to the disc withdrawing 22 under the inertial action (if the disc withdrawing 22 rotates in the forward direction in the clockwise direction, the pressure plate 21 rotates in the counterclockwise direction relative to the disc withdrawing 22 under the inertial action), so that an inclined plane II 225 and an inclined plane I213 tend to approach each other and climb each other, and the withdrawal distance 4 is maintained or generated or increased. Until the pressure plate 21 is clamped by the second inclined surface 225 and the step surfaces at the interface between the mounting threads 1-3 and the mounting columns 1-4, the pressure plate 21 is pushed to synchronously rotate in the forward direction, and the stage maintains or generates or expands the relief space 4 with compression resistance (the 4 distance may be already existed, the stage generates the mutual climbing trend, generally the 4 distance is maintained or generated or expanded, and in most cases the relief space is not reduced). The relief space 4 is smaller than the depth H of engagement between the driven teeth 212 of the pressure plate 21 and the driving teeth 221 of the relief plate 22).

When the mounting thread 1-3 is screwed into the steel bar sleeve, and one end face of the steel bar sleeve touches the pressing face 211, the end face of the steel bar sleeve starts to form pressure on the pressing face 211. Then, in the process of driving the steel bar sleeve to rotate and twist the steel bar thread, the end face of the steel bar sleeve can continuously generate pressure action on the pressing surface 211. And pressure peaks are generated when the thread surface of the reinforcing steel bar thread head is abnormal and is tightly twisted in the twisting process. These pressures have the effect of causing the second inclined surfaces 225 of the driving teeth 221 on the stripper plate 22 and the first inclined surfaces 213 of the driven teeth 212 on the pressure plate 21 to slide relative to each other, tending to compress the stripper gap 4. However, due to the mutual climbing effect of the forward torque force on the difference distribution of the disc 22 and the pressure plate 21 and the effect of the pressure and the friction resistance between the second inclined surface 225 and the first inclined surface 213 and the friction resistance between the pressing surface 211 and the end surface of the steel bar sleeve, the slope effect caused by the pressure is balanced, a certain axial supporting effect can be exerted between the inclined surfaces, the pressure resistance is shown by the back torque space 4, and a certain back torque space 4 between the pressure plate 21 and the disc 22 can still be maintained.

When a mechanical force power output end (such as an electric wrench) rotates and twists a reinforcing steel bar sleeve into a reinforcing steel bar head to a certain position and stops forward rotation force, the first inclined surface 213 of the driven tooth 212 generates pressure on the second inclined surface 225 of the driving tooth 221 through the potential energy stored by elastic deformation, and the pressure generates mutual friction resistance on one hand and generates component force in a reverse rotation direction acting on the second inclined surface 225 on the other hand. Asymmetric mechanical structures are formed at two ends of the reinforcing steel bar sleeve, namely the reinforcing steel bar sleeve is in relatively weak threaded connection with the device and easy to withdraw, and the reinforcing steel bar sleeve is in relatively strong threaded connection with the reinforcing steel bar thread head and not easy to loose. This structure exactly matches the corresponding work requirement, the front tool connection (the steel sleeve and the device) needs to be undone, and the rear workpiece connection needs to be retained as a work result.

Then, when the reverse rotation is started, the pressure plate 21 generates the force component which acts on the disc 22 and causes the disc 22 to generate the reverse rotation trend due to the potential energy stored by the original elastic deformation, and the disc 22 can rotate reversely only by smaller reverse rotation torque force. If the reverse rotation is counterclockwise, the backing plate 22 firstly starts to synchronously rotate counterclockwise, the pressure plate 21 has a clockwise rotation trend relative to the backing plate 22 under the action of inertia and the friction resistance of one end face of the steel bar sleeve to the pressure face 211, so that mutual landslide motion is generated between the pressure plate 21 and the backing plate 22, the axial supporting effect between the inclined faces is eliminated, and the original backing moment space 4 is easy to compress.

Because the second face 222 of the driving tooth 221 on the backing plate 22 and the first face 213 of the driven tooth 212 on the pressure plate 21 are slope (or inclined) faces, a small mutual rotation angle can generate larger axial size shrinkage under pressure, so that the 4-pitch is compressed more quickly. When the original length from 4 to 4 is more than the original elastic deformation, the pressure between the second inclined plane 225 of the driving tooth 221 on the withdrawing disc 22 and the first inclined plane 213 of the driven tooth 212 on the pressure plate 21 is reduced to zero, so that the pressure between the pressure surface 211 of the pressure plate 21 and the end surface of the steel bar sleeve is reduced to zero, the pressure surface 211 and the mounting threads 1-3 can swing out of a pressure locking state, and the steel bar sleeve can be easily rotated and withdrawn from the steel bar sleeve. And the threaded connection between the steel bar sleeve and the steel bar thread head can be preserved as an operation result, and an asymmetric operation result is obtained. The rest is the same as the above embodiment.

The specific working principle is shown in fig. 6 and 7:

fig. 6 is a mechanical analysis of a planar structure of the prior art, such as a nut screwed onto a screw, a side surface of the nut and a side surface of a nut of the screw being pressed against each other, and M is a pressing coincidence surface of the two surfaces, which is a mechanical analysis of the two surfaces. In the figure S₁、S₂Respectively representing a nut and a nut, the contact plane M is vertical to the axial direction of the screw rod, and the contracted screw rod is opposite to the nut S through threads₂With a pushing action F, nut S₂By M facing the nut S₁A pressure effect is generated. Nut S₂Fixation, overcoming S₁The force of the resistance of the M surface is F_{Torsion bar}Until the threaded connection is loosened F_{Push away}Is zero, F_{Torsion bar}The required work time is h and μ is the friction factor.

F_{Resistance device}＝μF_{Press and press}

From F_{Push away}＝F_{Press and press}F_{Resistance device}＝F_{Push away}*μ

And F_{Torsion bar}The movement in the acting direction does not cause S₁And S₂Distance (without overlapping the rotation effect of screw thread relative to nut thread)

Fig. 7 is a mechanical analysis of the innovative ramp scheme employed in the technical solution of the present invention. S₃、S₄Respectively, the ejection plate 22 and the platen 21, and the facing surfaces of the ejection plate and the platen are a second inclined surface 225 and a first inclined surface 213. Long nut or steel bar sleeve opposite pressing plate 21 (i.e. S)₄) With F_{Push away}Acts to in turn cause the platen 21 (i.e., S)₄) The contact surface of the second inclined surface 213 and the first inclined surface 222 faces the ejection disc 22 (i.e., S)₃) A pressure action is exerted. This pressure in turn generates F_{Oblique resistance}、F_{Pressure division}. The force to overcome the resistance between the inclined surfaces to which the backing plate 22 is subjected is F_{Torsion bar}。S＇₃Is S₃Reception of F_{Torsion bar}One position in the movement after action, to F_{Push away}Is zero, F_{Torsion bar}The required work time is h', mu is the friction factor.

F_{Press and press}＝cosθ*F_{Push away}F_{Oblique resistance}＝cosθ*F_{Push away}μ

F_{Flat resistor}＝cosθ*cosθ*F_{Push away}μ

F_{Pressure division}＝cos(90-θ)*cosθ*F_{Push away}

And F_{Torsion bar}The movement in the direction of action will cause the disc to be ejected from the disc-ejecting device S₃Move to S₃In the process of (1), at S₄Under the condition of no movement, the distance between the second inclined plane 225 and the first inclined plane 213 can be quickly expanded (without superposing the movement effect of the mounting thread 1-3 relative to the long nut or the steel bar sleeve), so that the torque relief interval 4 can be quickly compressed, the deformation speed of the elasticity generated in the positive rotation tightening process is reduced, and the F is quickly relieved_{Push away}The dip is zero.

From the above, F received by both_{Push away}Is equal to F_{Flat resistor}-F_{Pressure division}<<F_{Resistance device}Available F_{Torsion bar}<<F_{Torsion bar}. And S₃And S₄Can be quickly separated from each other to eliminate the compression deformation, and the pressure and the frictional resistance generated by the pressure are suddenly reduced to zero, so h<<h。

Example 3

The technical feature of this embodiment is that, referring to fig. 8 and 9, this embodiment is mainly used for connecting a steel bar sleeve with a small diameter to a steel bar. The power input part 1 is a column mounting part 2-3, one end of which is provided with a connector II 2-1 and the other end of which is provided with a mounting screw hole 2-2; the power output part 3 is a connecting rod 3-1, an axial limit 3-2 and a radial limit 3-3 are arranged on the connecting rod 3-1, one end of the connecting rod 3-1 is provided with a connecting thread I3-4, and the other end is provided with a mounting thread II 3-5; the connecting rod 3-1 is installed on an installation screw hole 2-2 of the cylinder installation part 2-3 through a first connecting thread 3-4, the pressure plate 21 is installed on the axial limiting 3-2 position of the connecting rod 3-1 in a rotating mode, the inner diameter of a hole, close to one part of the length of the cylinder installation part 2-3, of a central hole of the disc withdrawing 22 is slightly larger than the outer diameter of the section 3-4 of the connecting thread and smaller than the outer diameter of the connecting cylinder 8, and the part is pressed on a step surface of a junction between the connecting thread 3-4 and the connecting cylinder 8 through the cylinder installation part 2-3. The inner diameter of the hole of the rest part of the center of the disc ejecting 22 is slightly larger than the outer diameter of the connecting cylinder 8, the connecting cylinder 8 can be sleeved on the radial limiting 3-3 position on the connecting cylinder 8, and the connecting cylinder 8 is the matching position of the pressure plate 21 and the disc ejecting 22 mounted on the connecting rod 3-1.

The side of the pressure plate 21 is provided with butt joint threads 3-6, the butt joint threads 3-6 are screwed with a conical pushing piece 3-7, the conical pushing piece 3-7 is sleeved at the axial limiting 3-2 position of the connecting rod 3-1 and is screwed and fixed with the butt joint threads 3-6 of the pressure plate 21, the axial limiting 3-2 position is hidden in the conical pushing piece 3-7, the pressure plate 21 and the conical pushing piece 3-7 can rotate on the connecting rod 3-1, when the power output part 3 is twisted into a steel bar sleeve, the front end face of the conical pushing piece 3-7 is pressed against one end face of the steel bar sleeve, the pressure from the end face of the steel bar sleeve can be transmitted to the pressure plate 21, and the working principle of the pressure plate 21 and the disc withdrawing 22 is the same as that of the embodiment.

When the connecting rod is suitable for screwing in the small-diameter steel bar sleeve, the mounting thread II 3-5 on the connecting rod 3-1 screwed in the steel bar sleeve is correspondingly reduced. For the construction position where the tool is inconvenient to enter, a universal joint can be inserted between the connector II 2-1 and the mechanical force power output end (such as an electric wrench) so as to facilitate construction, and the rest of the embodiments are the same as the above embodiments.

Example 4:

the technical feature of this embodiment is that, referring to fig. 10 and 11, the power input part 1 is a connector three 4-1 with one end provided with a square hole or a threaded hole for butting with a mechanical power output end (such as an electric wrench) on the connector three 4-1, and a connector of a circular sleeve 4-2 is provided with the other end, and a connecting internal thread 4-3 is provided in the circular sleeve 4-2;

the power output part 3 is a connecting piece, one end of the connecting piece is provided with a mounting thread three 4-4, the other end of the connecting piece is provided with a column connector 4-5, the column connector 4-5 is provided with a fixing threaded hole 4-6, and the connecting cylinder 8 is the matching position of a mounting pressure plate 21 and a back plate 22 on the column connector 4-5.

The pressure plate 21 of the easy-to-withdraw torque part 2 is a non-rotating axial sliding plate, the withdrawing plate 22 comprises a movable plate 223 and a fixed plate 222, the driving teeth 221 of the withdrawing plate 22 are transmission teeth 2211 respectively arranged on two surfaces of the movable plate 223, the movable plate 223 is rotatably arranged on a cylinder connector 4-5 and is positioned between the pressure plate 21 and the fixed plate 222, the second inclined surface 225 is arranged on the transmission teeth 2211, the outer wall of the movable plate 223 is provided with a connecting external thread 2212, and one side of the outer wall is provided with a limiting protrusion 2213;

the fixed disk 222 is an annular fixed part provided with locking teeth 2221, the locking teeth 2221 are provided with three inclined surfaces 2222, the three inclined surfaces 2222 are inclined at an angle of 1-44 degrees with the plane of the section of the fixed disk 222, the locking teeth 2221 of the fixed disk 222 are correspondingly matched with the transmission teeth 2211 on one surface of the movable disk 223, the three inclined surfaces 2222 are correspondingly matched with the second inclined surfaces 225 of the transmission teeth 2211 on the corresponding side of the movable disk 223, and a back torque interval 4 for limiting the movable disk 223 between the pressure plate 21 and the fixed disk 222 is formed;

the pressure plate 21, the movable plate 223 and the fixed plate 222 are arranged on the column connector 4-5 through a screw 224 and a fixed threaded hole 4-6;

the external thread 2212 of the movable disc 223 is correspondingly matched with the internal thread 4-3 of the circular sleeve 4-2 on the power input part 1, so that the power input part 1, the easy-to-release torque part 2 and the power output part 3 are connected with each other to form a rotating body.

In the specific application, when the reinforcing steel bar sleeve is installed, the installation threads III 4-4 can be used for being twisted into the reinforcing steel bar sleeve. The pressure plate 21, the movable plate 223 and the fixed plate 222 are sequentially sleeved on the cylinder connector 4-5, and then the screw 224 is screwed into the fixed threaded hole 4-6 of the cylinder connector 4-5. The spacing part 4-51 limits the pressure plate 21 and the column connectors 4-5 to form a non-rotating axial sliding plate, so that the pressure plate 21 is limited to rotate with the column connectors 4-5, and the pressure plate 21 can only axially slide on the column connectors 4-5. The fixed disk 222 and the cylinder connector 4-5 are limited by the limiting piece 4-52 to form a non-rotating disk, so that the fixed disk 222 is limited to rotate relative to the cylinder connector 4-5, meanwhile, the fixed disk 222 is pressed on the end surface of the cylinder connector 4-5 by the screw 224, and the pressure plate 21, the movable disk 223 and the fixed disk 222 are installed on the cylinder connector 4-5.

The driving teeth 221 of the withdrawing disc 22 are transmission teeth 2211 respectively arranged on two sides of the movable disc 223, the movable disc 223 is rotatably arranged on the cylinder connector 4-5, the second inclined plane 225 is arranged on the transmission teeth 2211, the outer wall of the movable disc 223 is provided with a connecting external thread 2212, and one side of the outer wall is provided with a limiting protrusion 2213.

The square hole of the connector III 4-1 of the linkage force input part 1 can be inserted into a plug of a mechanical force power output end (such as an electric wrench). The inner wall of the circular sleeve 4-2 of the power input part 1 is provided with a connecting internal thread 4-3, the circular sleeve 4-2 is screwed into the connecting external thread 2212 on the movable disc 223 through the connecting internal thread 4-3 to be fixed and locked and fixed at the position of the limit bulge 2213, so that the power input part 1, the power output part 3 and the easy-to-release torque part 2 can be mutually screwed and connected.

The driven tooth 212 of the pressure plate 21 and the tip of the driving tooth 2211 on the side of the retreating plate 22 are referred to as a top of a slope, and the bottom of the tooth is referred to as a bottom of the slope.

Because the inner wall of the circular sleeve 4-2 of the power input part 1 is provided with the connecting internal thread 4-3, the circular sleeve 4-2 is twisted into the connecting external thread 2212 on the movable disc 223 through the connecting internal thread 4-3 to be fixed, so that the circular sleeve 4-2 is difficult to loosen, when the power input part 1 rotates in the positive direction, the torsion tightens the circular sleeve 4-2, and when the power input part 1 rotates in the negative direction, the circular sleeve 4-2 acts in the opposite twisting direction. However, the torsion force in the reverse direction is usually much smaller than the torsion force in the forward direction, and the torsion force in the reverse direction is tighter and tighter in use, for example, in order to prevent the circular sleeve 4-2 and the movable disk 223 from loosening, threaded holes may be formed in the circular sleeve 4-2 and the movable disk 223, and the positioning may be performed by screwing.

The relative macro process applied in this embodiment is to plug the power input socket 4-1 of the device into the plug installed on the mechanical power output end for standby, according to the working condition and requirement, the reinforcing steel bar sleeve can be twisted several threads on the reinforcing steel bar thread head by hand, then the three 4-4 parts of the installation thread on the power output part 3 are aligned with the reinforcing steel bar sleeve thread opening, the forward rotation is started, the reinforcing steel bar sleeve is twisted into, the pressing surface 211 is pressed on one end surface of the reinforcing steel bar sleeve, and then the reinforcing steel bar sleeve is rotated to be twisted into the reinforcing steel bar thread head. Or the part of the mounting thread three 4-4 on the power output part 3 can be directly firstly twisted into the steel bar sleeve, and the machine is stopped after the pressing surface 211 is pressed to one end surface of the steel bar sleeve. And aligning the screw opening of the steel bar sleeve with the steel bar wire head, starting the forward rotation again, and twisting the steel bar sleeve into the steel bar wire head. After the steel bar sleeve is twisted in place, the forward rotation is stopped, the reverse rotation is started, the three 4-4 parts of the mounting threads on the power output part 3 are withdrawn from the steel bar sleeve, and the threaded connection between the steel bar sleeve and the steel bar thread head which is just formed needs to be ensured to be reserved as operation and not to be damaged by reverse torque.

The relatively microscopic process applied in this embodiment is that the plug of the mechanical force power output end is inserted into the socket on the connector III 4-1 at one end of the power input part 1, and the mounting thread III 4-4 of the power output part 3 is aligned with the screw opening of the long steel bar sleeve. When the mechanical force power output end is started to rotate in the positive direction, the power output end transmits the torque force to the circular sleeve 4-2 through the connector III 4-1, and the circular sleeve 4-2 transmits the torque force to the movable disc 223.

When the movable disc 223 is firstly connected with the circular sleeve 4-2 by forward torsion, and the movable disc 223 is rotated forward under the action of torsion, the pressure plate 21 and the fixed disc 222 are under the action of inertia, the movable disc 223, the pressure plate 21 and the locking disc 222 have a tendency of mutual reverse rotation (reverse direction), the inclined planes II 225 on the transmission teeth 2211 on the two side surfaces of the movable disc 223 and the inclined planes I213 and III 2222 of the corresponding pressure plate 21 and the corresponding fixed disc 222 mutually form a mutually climbing tendency, the pressure plate 21 has a tendency of being pushed until the pressure surface 211 of the pressure plate 21 collides with a step surface at the junction between the cylinder connector 4-5 and the mounting thread III 4-4, so that the torque withdrawal interval 4 is maintained or generated or enlarged, and a certain space is formed or maintained for the subsequent sliding and shrinking movement. When the second inclined surfaces 225 on the two sides of the movable disc 223, the first inclined surfaces 213 of the pressure plate 21 and the third inclined surfaces 2222 of the locking disc 222 are rotated to be pressed against each other, the pressure plate 21 and the fixed disc 222 are pushed to rotate together, and the cylinder connector 4-5 and the mounting thread three 4-4 of the power output part 3 are also driven to rotate.

When the mounting thread three 4-4 is screwed into the steel bar sleeve, and one end face of the steel bar sleeve touches the pressing face 211, the end face of the steel bar sleeve starts to form pressure on the pressing face 211. Then, in the process of driving the steel bar sleeve to rotate and twist the steel bar thread, the end face of the steel bar sleeve can continuously generate pressure action on the pressing surface 211. And pressure peaks are generated when the thread surface of the reinforcing steel bar thread head is abnormal and is tightly twisted in the twisting process. These pressures tend to cause a landslide between the second inclined surface 225 of the movable platen 223 and the first inclined surface 213 of the pressure platen 21 and the third inclined surface 2222 of the fixed platen 222, and the torque relief gap 4 tends to be compressed. However, due to the mutual climbing effect generated by the difference distribution of the positive torque force and the pressure and friction resistance between the inclined planes, the slope sliding effect caused by the pressure is balanced, so that a certain axial supporting effect can be exerted between the inclined planes, the compression resistance of the back-off distance 4 is realized, and a certain back-off distance 4 can still be kept.

When a mechanical force power output end (such as an electric wrench) drives a steel bar sleeve to rotate and twist into a steel bar head to stop forward rotation force, the first inclined surface 213 of the driven tooth 212 and the third inclined surface 2222 of the locking tooth 2221 respectively generate pressure to the second inclined surface 225 of the driving tooth 2211 on both sides of the movable disc 223 through potential energy stored by elastic deformation, and the pressure generates mutual friction resistance on one hand and component force in a reverse rotation direction acting on the second inclined surface 225 on both sides on the other hand. Asymmetric mechanical structures are formed at two ends of the reinforcing steel bar sleeve, namely the reinforcing steel bar sleeve is in relatively weak threaded connection with the device and easy to withdraw, and the reinforcing steel bar sleeve is in relatively strong threaded connection with the reinforcing steel bar thread head and not easy to loose. This structure exactly matches the corresponding work requirement, the front tool connection needs to be undone, and the rear workpiece connection needs to be retained as a work result.

Then, when the reverse rotation is started, because the potential energy stored through the original elastic deformation generates component force in the reverse rotation direction acting on the second inclined planes 225 on the two sides of the movable disc 223, the movable disc 223 can reversely rotate only by smaller reverse rotation torque force. If the reverse rotation is counterclockwise, the movable disc 223 starts to rotate synchronously counterclockwise, and the pressure disc 21 and the fixed disc 222 have a clockwise rotation trend relative to the movable disc 223 due to inertia, so that mutual landslide motion is generated between the movable disc and the fixed disc, the axial supporting effect between the inclined planes is eliminated, and the original torque clearance 4 is easy to compress.

Because the second 222, the first 213 and the third 2222 between the movable disk 223 and the pressure disk 21 and the fixed disk 222 are slope (or inclined) surfaces and have small mutual rotation angles, larger axial size shrinkage can be generated under pressure, and the torque relief interval 4 is compressed more quickly. When the compressed length of the original torque-withdrawal interval 4 exceeds the original elastic deformation, the pressure generated by the first inclined surface 213 of the driven tooth 212 and the third inclined surface 2222 of the locking tooth 2221 on the second inclined surface 225 of the driving tooth 2211 on the two sides of the movable disc 223 respectively is reduced to zero, so that the pressure of the pressing surface 211 of the pressing disc 21 and the end surface of the steel bar sleeve is reduced to zero, the pressing surface 211 and the mounting thread 4-4 can swing out of the pressure locking state of the long nut or the steel bar sleeve, the movable disc 223 can push the pressing disc 21 and the fixed disc 222, and then the cylinder connector 4-5 and the mounting thread three 4-4 of the driving output part 3 rotate to easily withdraw from the steel bar sleeve. And the threaded connection between the steel bar sleeve and the steel bar thread head can be preserved as an operation result, and an asymmetric operation result is obtained.

Because the construction of building site, the occasion of many kinds of three-dimensional operations is more, in order to avoid the mechanical force power take off and automatic pine takes off between polygon plug, the socket that this device is connected with, adopt between plug, the socket to receive the card grafting. Such as the commonly used mode of locking the open-hole bolt, the mode of arranging a thin neck on the plug and the mode of arranging a steel ball which can be sleeved on the socket to lock the thin neck, and the like. The rest is the same as the above embodiment.

Example 5:

the technical characteristic of this embodiment is that it is suitable for the mechanical force power take off end to drive the reinforcing bar rotation that is equipped with the silk head. With particular reference to fig. 12 and 13, the power input portion 1 comprises a fixed connector 22-1 and an outer sleeve 22-2 provided on the backing plate 22;

the power output part 3 comprises a convex tooth 21-1 which is annularly distributed on the pressing surface 211 of the pressure plate 21 and a top column 21-2 which is arranged at the center of the convex tooth 21-1 which is annularly distributed, one side of the convex tooth 21-1 is provided with a mounting screw sleeve 21-3, the mounting screw sleeve 21-3 is fixedly arranged on an outer sleeve 22-2, one end of the mounting screw sleeve 21-3 is provided with a notch 21-4, the notch 21-4 is correspondingly engaged with the convex tooth 21-1, so that the mounting screw sleeve 21-3 is fixed on the outer sleeve 22-2 and is butted with the pressure plate 21 through the notch 21-4; the ejection column 21-2 is smaller than the diameter of the butt joint of the steel bar and is used for ejecting the steel bar screw head to prevent the head connecting thread of the steel bar screw head from being easily crushed by the ejection column 21-2 when the steel bar screw head is screwed into the installation screw sleeve 21-3, so that the installation screw sleeve 21-3 is influenced to withdraw from the steel bar screw head. The length of the installation thread sleeve 21-3 from the end face of the top column 21-2 to the outside (namely the end face of the top column 21-2 to the interface end part of the installation thread sleeve 21-3) is equal to or less than the thread distribution length of one end of the steel bar thread head, so that the installation thread sleeve 21-3 is prevented from being clamped on the irregular thread part near the edge of the steel bar thread head and is difficult to withdraw. The mounting screw sleeve 21-3 can be fixedly mounted on the outer sleeve 22-2 by screwing or/and welding.

The axial connecting position is a mounting inner cavity 21-5 part for forming a mounting pressure plate 21 and a back plate 22 when the mounting threaded sleeve 21-3 is matched with the outer sleeve 22-2, the pressure plate 21 and the back plate 22 of the easy-to-back torque part 2 are mounted in the mounting inner cavity 21-5, the length of the mounting inner cavity 21-5 is greater than the total thickness of the pressure plate 21 and the back plate 22 when the pressure plate 21 and the back plate 22 are mutually meshed with the tooth bottom, the total thickness of the back torque space and the total thickness of the pressure plate and the back plate when the pressure plate and the back plate are mutually meshed with the tooth bottom, and the back torque space 4 which can be formed is.

The outer wall of the installation screw sleeve 21-3 is provided with a reverse external thread 21-6, the reverse external thread 21-6 is provided with a stopping sleeve 21-7 provided with a reverse internal thread 21-8 and used for fixing the installation screw sleeve 21-3 on the outer sleeve 22-2, the stopping sleeve 21-7 is of an annular structure, and the stopping sleeve 21-7 is positioned at one end of the outer sleeve 22-2.

The outer sleeve 22-2 and the stopping sleeve 21-7 are made of different reverse threads, respectively, so that the outer sleeve 22-2 and the stopping sleeve 21-7 are squeezed against each other when rotating in the same direction. Then, a plurality of small welding points are welded at the butt joint of the outer sleeve 22-2 and the stopping sleeve 21-7 for fixation, so that mutual rotation caused by vibration is prevented. And when the adjustment is needed later, the small welding points are cut. The stopping sleeve 21-7 and the outer sleeve 22-2 are provided with an expanded inner diameter butt joint port 21-9 in the position corresponding to the butt joint end, and the butt joint port 21-9 is not contacted with the outer wall of the installation screw sleeve 21-3.

The relative macro process applied in this embodiment is:

the mechanical force is started to rotate positively, and the installation screw sleeve 21-3 on the device is firstly twisted into a steel bar wire head at one end of a steel bar. After the machine is stopped, the thread head at the other end of the steel bar is aligned with the installed steel bar sleeve. And then the machine is started to rotate positively to drive the steel bar to rotate, and the screw head at the other end of the steel bar is twisted into the steel bar sleeve. And after the steel bar is in place, stopping the forward rotation, starting the reverse rotation, withdrawing the installation thread sleeve 21-3 from the steel bar thread head, and ensuring that the thread head at the other end of the steel bar is connected with the thread of the steel bar sleeve to be reserved as an operation result and not damaged by reverse torque.

The relatively microscopic process applied in this example is:

a polygonal connector 22-1 on a disc withdrawing 22 is butted with a socket of a mechanical force power output end, an installation screw sleeve 21-3 is aligned with a steel bar wire head, and the front end of the installation screw sleeve 21-3 is arranged into a horn mouth in order to insert the steel bar wire head quickly. When the forward rotation is started, the mechanical force power output end drives the disc 22 to rotate, the pressure plate 21 has a tendency of rotating in a direction opposite to that of the disc 22 under the inertial action (if the forward rotation direction of the disc 22 is clockwise, the pressure plate 21 has a tendency of rotating counterclockwise relative to the disc 22 under the inertial action), so that the second inclined surface 225 and the first inclined surface 213 tend to approach each other and climb each other, and the back torque interval 4 is maintained or generated or enlarged. Because the length of the mounting inner cavity 21-5 is greater than the total thickness of the pressing plate and the backing plate when the pressing plate and the backing plate are mutually engaged to the tooth bottom and is less than the sum of the total thickness of the pressing plate and the backing plate when the pressing plate and the backing plate are mutually engaged to the tooth bottom and the tooth height, the formed backing distance is less than the tooth height, and the backing plate 22 and the pressing plate 21 cannot climb to the top of a slope. Until the pressure plate 21 is clamped by the second inclined surface 225 and the notch end of the mounting screw 21-3, the pressure plate 21 is pushed to synchronously rotate in the forward direction, the step maintains or generates or expands the back torque space 4, the back torque space 4 may form a part in advance, the mutual climbing trend generated in the step generally maintains or generates or expands the back torque space 4 and does not shrink in most cases, and the back torque space 4 is smaller than the meshing depth H between the driven teeth 212 of the pressure plate 21 and the driving teeth 221 of the back plate 22. The pressing plate 21 is engaged with the notch 21-4 of the installation screw sleeve 21-3 through the convex tooth 21-1, and drives other components to rotate, so that the installation screw sleeve 21-3 can be twisted on the steel bar thread head.

When the mechanical force power output end continuously rotates in the positive direction until the top pillar 21-2 on the pressing surface 211 on the pressing disc 21 contacts with the end surface of the steel bar screw head, the steel bars are driven to rotate together and begin to generate larger extrusion force. Then, in the process of driving the steel bar to rotate and twist into the steel bar sleeve, the end face of the steel bar can continuously generate pressure action on the ejector rod 21-2 on the pressing surface 211. And pressure peaks are generated when the thread surface of the reinforcing steel bar thread head is abnormal in the twisting process, the twisting process and the like. These pressures have the effect of causing the second inclined surfaces 225 of the driving teeth 221 on the stripper plate 22 and the first inclined surfaces 213 of the driven teeth 212 on the pressure plate 21 to slide relative to each other, tending to compress the stripper gap 4. However, due to the mutual climbing effect generated by the difference distribution of the positive torque force, the pressure and the frictional resistance between the second inclined surface 225 and the first inclined surface 213 and the tooth fixing effect of the mounting screw sleeve 21-3 on the pressure plate 21, the slope effect caused by the pressure is balanced, a certain axial supporting effect can be exerted between the inclined surfaces, the torque withdrawing space 4 has pressure resistance, and a certain torque withdrawing space 4 between the pressure plate 21 and the torque withdrawing plate 22 can be still maintained.

When a mechanical force power output end (such as an electric wrench) drives the mounting screw sleeve 21-3 to rotate so as to twist a screw head at the other end of the steel bar into a steel bar sleeve, and the forward rotating force is stopped when the mechanical force power output end is in place, the first inclined surface 213 of the driven tooth 212 generates pressure on the second inclined surface 225 of the driving tooth 221 through the potential energy stored by elastic deformation, and the pressure generates mutual friction resistance on one hand and generates component force in a reverse rotating direction acting on the second inclined surface 225 on the other hand. An asymmetric mechanical structure is formed at two ends of the steel bar, namely, the steel bar thread head is in relatively weak threaded connection with the device which is easy to withdraw, and the thread head at the other end of the steel bar is in relatively strong threaded connection with the steel bar sleeve which is not easy to loose. The structure is just matched with the working requirement, the connection between the steel bar thread head and the device needs to be released, and the connection between the thread head at the other end of the steel bar and the steel bar sleeve needs to be reserved as an operation result.

Then, when the reverse rotation is started, the pressure plate 21 acts on the disc 22 due to the potential energy stored by the original elastic deformation, so that the disc 22 generates component force with a reverse rotation trend, and the disc 22 can rotate reversely only by smaller reverse rotation torque force. If the reverse rotation is in the counterclockwise direction, the disc withdrawing 22 firstly starts to synchronously rotate in the counterclockwise direction, the pressure plate 21 has a clockwise rotation trend relative to the disc withdrawing 22 under the inertia and the tooth fixing action of the mounting screw sleeve 21-3 on the pressure plate 21, so that a mutual landslide trend is generated between the pressure plate 21 and the disc withdrawing 22, the axial supporting action between the inclined surfaces is eliminated, and the original withdrawal moment space 4 is easily compressed.

Because the second face 222 of the driving tooth 221 on the stripper plate 22 and the first face 213 of the driven tooth 212 on the pressure plate 21 are slope (or inclined) faces, a small mutual rotation angle can generate larger axial size shrinkage under pressure, so that the stripper space 4 is compressed more quickly. When the compressed length of the original torque-withdrawing space 4 exceeds the original elastic deformation, the pressure between the second inclined plane 225 of the driving tooth 221 on the withdrawing disc 22 and the first inclined plane 213 of the driven tooth 212 on the pressure plate 21 is suddenly reduced to zero, so that the pressure between the ejector rod 21-2 on the pressure surface 211 of the pressure plate 21 and the end surface of the steel bar is suddenly reduced to zero, the ejector rod 21-2 and the mounting threaded sleeve 21-3 on the pressure surface 211 can swing to be released from the pressure locking state, and the steel bar can be easily rotated and withdrawn from the steel bar wire head. The thread connection between the screw head at the other end of the steel bar and the steel bar sleeve can be used as an operation result to be preserved, and a required asymmetric operation result is obtained.

Example 6

The technical characteristics of this embodiment are: the blocking sleeve 5 is several synapses extending from one end of the outer sleeve 22-2. After the outer sleeve 22-2 is screwed in and adjusted in position, the synapse weld is fixed at the location of the original reverse thread 21-6 on the mounting nut 21-3. When the position of the outer sleeve 22-2 needs to be adjusted again, the small weld points are cut.

Claims

1. Easy-to-withdraw thread connecting device based on slope mechanical effect, comprising a power input part (1), an easy-to-withdraw torque part (2) and a power output part (3), and is characterized in that:

the power input part (1) and the power output part (3) are axially connected with each other;

the easy-to-withdraw torque part (2) is arranged at the axial connecting position between the power input part (1) and the power output part (3), and the easy-to-withdraw torque part (2) consists of a pressure plate (21) and a withdrawing plate (22);

one surface of the pressure plate (21) is provided with a pressure surface (211), and the other surface is provided with driven teeth (212) with a first inclined surface (213);

one surface of the disc withdrawing (22) is provided with a driving tooth (221) with a second inclined surface (225), and the driving tooth (221) is matched and corresponding to the driven tooth (212) of the pressure plate (21);

the pressure plate (21) and the disc withdrawing (22) are arranged on the axial connecting position between the power input part (1) and the power output part (3) in a relative sliding displacement way, the pressure plate (21) or the disc withdrawing (22) is a rotating disc, the power input part (1) drives the power output part (3) to rotate, the pressure plate (21) and the disc withdrawing (22) form a relative motion trend, the driven teeth (212) and the driving teeth (221) form thrust for enabling the pressure plate (21) and the disc withdrawing (22) to move reversely under the action of the first inclined plane (213) and the second inclined plane (225), a withdrawing space (4) is formed between the pressure plate (21) and the disc withdrawing (22), and the withdrawing space (4) is smaller than the meshing depth H between the driven teeth (212) of the pressure plate (21) and the driving teeth (221) of the disc withdrawing (22), so that the easy-withdrawing thread connecting device with a mechanical slope surface effect is formed.

2. The easy-to-withdraw threaded connection device based on slope mechanical effect as claimed in claim 1, wherein: the power input part (1) and the power output part (3) are of an integrated structure, the power input part (1) and the power output part (3) are formed by a rotating rod, the power input part (1) is a cylindrical rod part (5) at one end of the rotating rod, the power output part (3) is a threaded rod part (6) at the other end of the rotating rod, and the axial connecting position is a body mounting position of the cylindrical rod part (5).

3. The easy-to-withdraw threaded connection device based on slope mechanical effect as claimed in claim 1, wherein: the power input part (1) and the power output part (3) are of a split structure, and the axial connecting position is a connecting cylinder (8) mounting position arranged on the power input part (1) or the power output part (3).

4. The easy-to-withdraw threaded connection device based on slope mechanical effect of claim 3, characterized in that: the power input part (1) is a connecting piece, one end of the connecting piece is provided with a first connecting head (1-1), and the other end of the connecting piece is provided with a pressure head screw (1-2);

the power output part (3) is a connecting piece, one end of the connecting piece is provided with a first mounting thread (1-3), the other end of the connecting piece is provided with a mounting cylinder (1-4), the mounting cylinder (1-4) is provided with a fixing screw hole (1-5), and the connecting cylinder (8) is a matching part for mounting a pressure plate (21) and a retreating plate (22) on the mounting cylinder (1-4).

5. The easy-to-withdraw threaded connection device based on slope mechanical effect of claim 3, characterized in that: the power input part (1) is a cylinder mounting part (2-3) with a second connector (2-1) at one end and a mounting screw hole (2-2) at the other end;

the power output part (3) is a connecting rod (3-1), an axial limit (3-2) and a radial limit (3-3) are arranged on the connecting rod (3-1), one end of the connecting rod (3-1) is provided with a connecting thread I (3-4), and the other end of the connecting rod (3-1) is provided with a mounting thread II (3-5);

the connecting rod (3-1) is installed on an installation screw hole (2-2) of a cylinder installation part (2-3) through a first connecting thread (3-4), the pressure plate (21) is installed on an axial limiting (3-2) position of the connecting rod (3-1) in a rotating mode, the disc withdrawing (22) is installed on a radial limiting (3-3) position of the connecting rod (3-1) in a non-rotating sliding mode, and the connecting cylinder (8) is a matching part of the connecting rod (3-1) on which the pressure plate (21) and the disc withdrawing (22) are installed.

6. The easy-to-withdraw threaded connection device based on slope mechanical effect of claim 5, characterized in that: the side of the pressure plate (21) is provided with butt joint threads (3-6), the butt joint threads (3-6) are connected with a conical pushing piece (3-7) in a threaded mode, and the conical pushing piece (3-7) is sleeved on the axial limiting position (3-2) of the connecting rod (3-1) and is fixed with the butt joint threads (3-6) of the pressure plate (21) in a threaded mode.

7. The easy-to-withdraw threaded connection device based on slope mechanical effect as claimed in any one of claims 1 to 6, wherein: an elastic piece (71) is arranged between the driven tooth (212) of the pressing plate (21) and the driving tooth (221) of the disc withdrawing (22), and a sheath (7) is arranged on the outer sides of the pressing plate (21) and the disc withdrawing (22).

8. The easy-to-withdraw threaded connection device based on slope mechanical effect of claim 3, characterized in that: the power input part (1) is a connecting piece, one end of the connecting piece is provided with a third connecting head (4-1), the other end of the connecting piece is provided with a circular sleeve (4-2), and a connecting internal thread (4-3) is arranged in the circular sleeve (4-2);

the power output part (3) is a connecting piece, one end of the connecting piece is provided with a third mounting thread (4-4), the other end of the connecting piece is provided with a column connector (4-5), the column connector (4-5) is provided with a fixing threaded hole (4-6), and the connecting cylinder (8) is a matching part of the column connector (4-5) on which a pressure plate (21) and a disc withdrawing (22) are mounted;

the pressure plate (21) of the easy-to-withdraw torque part (2) is a non-rotating axial sliding plate, the withdrawing plate (22) comprises a movable plate (223) and a fixed plate (222), driving teeth (221) of the withdrawing plate (22) are transmission teeth (2211) respectively arranged on two sides of the movable plate (223), the movable plate (223) is rotatably arranged on a cylinder connector (4-5), a connecting external thread (2212) is arranged on the outer wall of the movable plate (223), and a limiting protrusion (2213) is arranged on one side of the outer wall;

the fixed disc (222) is an annular fixed piece provided with locking teeth (2221), the locking teeth (2221) are provided with three inclined surfaces (2222), the locking teeth (2221) of the fixed disc (222) are correspondingly matched with the transmission teeth (2211) on one surface of the movable disc (223) to form a space (4) for limiting the moment of retreat of the movable disc (223) between the pressing disc (21) and the fixed disc (222);

the pressure plate (21), the movable plate (223) and the fixed plate (222) are arranged on the column connector (4-5) in a matching way through a screw rod (224) and a fixed threaded hole (4-6);

the external thread (2212) of the movable disc (223) is correspondingly matched with the internal thread (4-3) of the circular sleeve (4-2) on the power input part (1), so that the power input part (1), the easy-to-retreat torque part (2) and the power output part (3) are connected with each other to form a rotating body.

9. The easy-to-withdraw threaded connection device based on slope mechanical effect as claimed in claim 1, wherein:

the power input part (1) comprises a fixed connector (22-1) and an outer sleeve (22-2) which are arranged on the disc withdrawing (22);

the power output part (3) comprises convex teeth (21-1) which are annularly distributed on a pressing surface (211) of the pressure plate (21) and a top column (21-2) which is arranged at the center of the convex teeth (21-1) which are annularly distributed, one side of each convex tooth (21-1) is provided with a mounting threaded sleeve (21-3), each mounting threaded sleeve (21-3) is fixedly mounted on an outer sleeve (22-2), one end of each mounting threaded sleeve is provided with a notch (21-4), and each notch (21-4) is correspondingly meshed with the corresponding convex tooth (21-1);

the axial connecting position is a mounting inner cavity (21-5) part for mounting the pressure plate (21) and the disc withdrawing (22) when the mounting screw sleeve (21-3) is matched with the outer sleeve (22-2), the pressure plate (21) and the disc withdrawing (22) of the torque-easy-to-withdraw part (2) are mounted on the mounting inner cavity (21-5), and the length of the mounting inner cavity (21-5) is greater than the thickness of the pressure plate (21) and the disc withdrawing (22) when matched and is equal to the sum of the total thicknesses of the torque-withdrawing interval (4) and the pressure plate (21) and the disc withdrawing (22) when meshed with the tooth bottom.

10. The easy-to-withdraw threaded connection device based on slope mechanics effect of claim 9, wherein: the outer wall of the mounting screw sleeve (21-3) is provided with a reverse external thread (21-6), the reverse external thread (21-6) is provided with a stopping sleeve (21-7) provided with a reverse internal thread (21-8), and the stopping sleeve (21-7) is positioned at one end of the outer sleeve (22-2).