CN113601447A - Connecting piece disassembling mechanism of supporting structure and using method thereof - Google Patents

Abstract

The invention relates to a connecting piece dismounting mechanism of a supporting structure, wherein a connecting piece is tightly connected with a nut through a bolt and at least comprises a dismounting part, a fixing part and an extending part. The disassembling part can be at least sleeved on the bolt and can be used for unscrewing the bolt at least around the axial direction of the bolt; the fixing part can be sleeved on the nut corresponding to the bolt and provides torque for preventing the nut from being forced to rotate along with the rotation of the bolt; the extension portion is connectable with the detachment portion, and the detachment portion enables a worker to transmit torque applied to the extension portion to the detachment portion through the extension portion at a location remote from the bolt and/or nut; the detaching portion is capable of detaching the bolt and the nut connected to the bolt and taking out the bolt and the nut from the connecting member only by rotating the extending portion about the axial direction of the extending portion in cooperation with the fixing portion.

Description

Connecting piece disassembling mechanism of supporting structure and using method thereof

Technical Field

The invention relates to the technical field of pipeline disassembling tools, in particular to a connecting piece disassembling mechanism of a supporting structure and a using method thereof.

Background

In a construction process such as a cover and excavation reverse method, a steel pipe column or the like is generally used as a support member. And tool sections are widely arranged for auxiliary construction during the construction of the steel pipe column at present. The tool joint is mainly used for fixing or positioning the steel pipe column when the strength of the pile foundation concrete does not meet the requirement, so that the whole steel pipe column is vertically downward or vertical to the ground in the pile foundation concrete. Wherein, usually, the connection between the steel pipe column and the tool joint is realized by adopting a connection mode such as bolts and the like. After the excavation of the foundation pit or the pot hole is completed, a crane is generally adopted to hoist the steel pipe column through the tool joint so as to be located in the foundation pit or the pot hole, and the tool joint needs to be dismantled after the steel pipe column is in place. And a steel casing is usually arranged on the side wall of the foundation pit or the pot hole to prevent the collapse of the earth around the foundation pit or the pot hole. Wherein, the steel-pipe column is located the inside of steel casing. In general, since the subway stations during construction are located below the ground, the connection point between the steel pipe column and the tool joint is also located below the ground, and when the steel pipe column and the tool joint are removed, the method generally adopted is as follows: 1) manually disassembling, namely manually excavating a soil filling body around the steel pipe column and the steel casing, excavating to a connecting part of the steel pipe column and the tool joint to expose the bolt, and manually disassembling by using a wrench; 2) and (4) slope excavation, namely firstly hanging away the steel casing, then carrying out slope excavation on the periphery of the foundation pit or the pit hole by using an excavator, exposing the connecting part of the steel pipe column and the tool joint, and manually disassembling by using a wrench. However, the above methods have technical disadvantages. For example, the technical deficiencies of the first method are: the steel pipe column is manually inserted into a gap between the steel pipe column and the steel casing, and the wrench is adopted for manual disassembly, so that on one hand, the operation surface is narrow, the operation space is very limited, and the manual operation is not facilitated, and on the other hand, the potential safety hazard exists, and the personal safety of a constructor is not facilitated; the technical deficiencies of the second method are: the periphery of the hole is subjected to slope releasing excavation by using an excavator, a connecting part of the steel pipe column and the tool joint is exposed, and then backfilling treatment is carried out on the connecting part, so that a large amount of manpower and material resources are consumed, and the construction period is prolonged. Therefore, a need exists for a new link detachment mechanism for a support structure and method of use.

For example, chinese patent publication No. CN211761249U discloses a pipe flange bolt removal tool. This pipeline flange bolt extracting tool includes: two arc-shaped clamping blocks; the two T-shaped grooves are respectively formed on the corresponding arc-shaped clamping blocks; one side of the frame plate is slidably arranged in the two T-shaped grooves; the rotating rod penetrates through one side of the frame plate and is movably connected with the frame plate; the square block is fixedly arranged at one end of the rotating rod; the first sleeve is sleeved on the square block. The utility model discloses a pipeline flange bolt extracting tool that provides can install multiple not unidimensional sleeve, cooperates the multiple not unidimensional sleeve to remove the bolt and nut of multiple size, and volume weight is little for the spanner of equal efficiency, and more portable has alleviateed staff's burden to a certain extent.

For another example, chinese patent publication No. CN210650516U discloses a flange bolt dismounting device, which includes a fixing block, a first jackscrew and a second jackscrew, wherein a stepped U-shaped slot is disposed in the middle of the fixing block, the fixing block is correspondingly provided with a first threaded hole and a second threaded hole at two sides of the stepped U-shaped slot, and the first jackscrew and the second jackscrew are correspondingly and rotatably installed in the first threaded hole and the second threaded hole of the fixing block. The flange bolt dismounting device has the advantages of simple structure, low cost, convenience in operation and strong practicability, the efficiency of dismounting the flange bolts can be effectively improved, and the damage of the flange bolts can be avoided.

After carefully studying the technical scheme of the above utility model, the inventor finds that the above utility model has the following technical defects: when the pipeline flange or the connecting piece to be dismantled and the like are located in a narrow space, workers are inconvenient to carry the utility model to be close to the pipeline flange or the connecting piece; even if the workers can approach the pipeline flange or the connecting piece, the efficiency of the workers using the utility model is extremely low due to the narrow operation surface, and the operation on the narrow operation surface is not beneficial to the personal safety of the workers; if the obstacles around the pipeline flange or the connecting piece are removed, for example, an excavator is used for carrying out slope-releasing excavation on the periphery of the pipeline flange or the connecting piece, the connecting part of the pipeline flange or the connecting piece is exposed, and then backfilling treatment is carried out on the part, so that a large amount of manpower and material resources are consumed, and the construction period is prolonged; the above scheme also cannot ensure that the connecting pieces such as bolts and nuts of the connecting structure do not fall off when being detached, so that the connecting pieces such as bolts and nuts falling back to the foundation pit or the pot hole may fall into bolt holes of the steel pipe column installed in the foundation pit, and the subsequent required structures such as the steel pipe column cannot be continuously installed on the steel pipe column. Therefore, it is necessary to improve the prior art against the deficiency thereof.

Furthermore, on the one hand, due to the differences in understanding to the person skilled in the art; on the other hand, since the inventor has studied a lot of documents and patents when making the present invention, but the space is not limited to the details and contents listed in the above, however, the present invention is by no means free of the features of the prior art, but the present invention has been provided with all the features of the prior art, and the applicant reserves the right to increase the related prior art in the background.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a connecting piece disassembling mechanism of a supporting structure. The connecting piece is fastened and connected by a bolt and a nut and at least comprises a detaching part, a fixing part and an extending part. The connecting piece disassembling mechanism is particularly suitable for the construction process of a cover-excavation top-down method.

The detaching portion is configured to be able to be at least fitted to the bolt. The detaching portion is capable of unscrewing the bolt at least about an axial direction of the bolt. The fixing part is movably connected with the disassembling part through the connecting part.

The fixing portion is configured to be able to be fitted over a nut corresponding to the bolt. The fixing portion can provide the nut with a torque for preventing it from being forced to rotate with the rotation of the bolt.

The extension portion is connectable with the detachment portion. The extension portion is configured to enable a worker to transmit torque applied to the extension portion to the detachment portion through the extension portion at a location remote from the bolt and/or the nut. In the case where the connecting member and the bolt and the nut thereon are not under the landfill body, the detaching portion is configured to be able to detach the bolt and the nut connected to the bolt and to take out the bolt and the nut from the connecting member only by rotating the extending portion about the axial direction of the extending portion in cooperation with the fixing portion.

According to a preferred embodiment, the removal portion is provided with a protrusion extending towards the extension. The protrusion is integrally connected with the detaching part. The end part of the protrusion body close to the extension part is provided with a conversion joint which can be clamped in the inner cavity of the extension part. The end part of the extension part close to the dismounting part is provided with an inner cavity matched with the adapter, so that dismounting parts of different models can be quickly dismounted from the extension part through the adapter.

According to a preferred embodiment, one end of the connecting part close to the fixing part is fixedly connected with the circumferential outer wall of the fixing part, so that the connecting part can abut against the connecting piece after the connecting part rotates for a certain distance along with the fixing part when the dismounting part unscrews the bolt, and a torque for preventing the nut from being forced to rotate along with the rotation of the bolt is provided for the nut. The connecting part can be used for converting the fixing part from the first position to the second position when the nut is detached or separated from the bolt, so that the fixing part can be smoothly lifted to the ground by the connecting part without being blocked by the connecting piece. Through the configuration mode, when the bolt clamped by the disassembling part is separated from the nut clamped by the fixing part, at least part of the structure of the connecting part can be converted into a flexible connecting state from a rigid connecting state, so that the fixing part can be in a suspension state and is positioned outside the radial radius of the connecting part, the connecting part and the fixing part connected with the connecting part can be smoothly lifted to the ground from the lower part of the connecting structure by lifting the extending part along the vertical direction, the blocking of the connecting part is avoided, meanwhile, the construction flow is simplified, and the construction period is shortened.

According to a preferred embodiment, a flange extending inwards in the radial direction of the inner cavity is arranged on the side, away from the detaching part, of the inner cavity of the fixing part, so that when the detaching part unscrews the bolt, the flange can apply a lifting force, facing the detaching part in the axial direction of the inner cavity, to the bolt corresponding to the nut through the flange, and the lifting force is used for ejecting the bolt out of the connecting piece.

According to a preferred embodiment, the end of the connecting portion remote from the fixing portion is rotatably connected to the circumferential outer wall of the protrusion in such a manner that the detaching portion can be moved toward or away from the fixing portion.

According to a preferred embodiment, a plane of at least a part of the side wall in the inner cavity of the detaching part, which is inward along the radial direction of the detaching part, forms an included angle with the axial center line of the inner cavity, so that the inner cavity can provide clamping force inward along the radial direction of the detaching part and/or friction force along the axial direction of the detaching part for the bolt after the bolt is sleeved in the inner cavity. The included angle ranges from one to five degrees.

According to a preferred embodiment, the length of the connecting portion in the axial direction of the detachable portion and/or the fixing portion is greater than the length of the bolt, so that the connecting portion can provide sufficient movement space for the bolt clamped by the detachable portion to ensure that the bolt can be smoothly taken out from the bolt hole of the connecting member.

According to a preferred embodiment, one end of the extension part far away from the detaching part is provided with at least one group of external force application points, so that a certain torque is applied to the extension part and the detaching part connected with the extension part through the external force application points.

According to a preferred embodiment, the extension can be movably connected to other fixed platforms by means of a connecting ring, so as to enable at least the axial centre line of the rotating extension to be always in line with the axial centre line of the dismounting portion.

According to a preferred embodiment, a method of using a connector removal mechanism for a support structure comprises: the extension part, the dismounting part and the fixing part which are connected with the extension part are movably connected with other fixing platforms which are connected with the connecting piece through connecting rings; sleeving a bolt and a nut on the disassembling part and the fixing part respectively; applying a torque to the extension portion and a detaching portion connected to the extension portion by rotating the extension portion to detach the bolt and the nut; the removed bolt and nut are removed by lifting the extension.

Drawings

FIG. 1 is a simplified schematic diagram of a preferred embodiment of the present invention;

FIG. 2 is a simplified schematic view of a preferred embodiment of the detachment portion of the present invention;

fig. 3 is a simplified schematic diagram of another preferred embodiment of the present invention.

List of reference numerals

1: the detaching part 2: fixing part 3: connecting part

4: extension 5: connection ring 101: protrusion body

102: the adapter 103: third lumen 202: second inner cavity

301: the rotating element 302: first connection element 303: second connecting element

304: third connecting member 401: external force application site 402: a first inner cavity

I: a support structure II: connecting piece IIa: bolt

IIb: nut

Detailed Description

The following detailed description is made with reference to the accompanying drawings.

Fig. 1 to 3 show a link dismounting mechanism of a support structure. The connecting piece is tightly connected with the nut through a bolt. This connecting piece disassembly body includes at least: a detachable portion 1, a fixed portion 2 and an extension portion 4. The detachable portion 1 is configured to be able to be fitted to at least a bolt. The detaching part 1 can unscrew the bolt at least about the axial direction of the bolt. The fixed part 2 is movably connected with the detachable part 1 through a connecting part 3. The fixing portion 2 is configured to be able to be fitted over a nut corresponding to the bolt and to provide the nut with a torque for preventing it from being forcibly rotated in accordance with the rotation of the bolt. The extension 4 can be connected with the detachable part 1. The detachable portion 1 extends in a direction away from the detachable portion 1. The dismounting portion 1 is configured to enable a worker to transmit a torque applied to the extension portion 4 to the dismounting portion 1 through the extension portion 4 at a place remote from the bolt and/or the nut. In the case where the connector and the bolt and nut thereon are not under the landfill, the detaching part 1 is configured to be able to detach the bolt and the nut connected to the bolt and take out the bolt and nut from the connector only by turning the extending part 4 about the axial direction of the extending part 4 with the fitting of the fixing part 2.

The support structure may be a steel pipe column and/or a tool joint. The connector may be a connecting member used in a joint between the tool joint and the steel pipe column, or may be another type of connecting member. The tool joint is mainly used for fixing the steel pipe column when the strength of the pile foundation concrete does not meet the requirement, so that the whole steel pipe column is vertically downward or vertical to the ground in the pile foundation concrete.

Preferably, the detaching portion 1 can be fitted over a bolt head of a bolt. Preferably, the circumferential outer wall of the detachable portion 1 may be cylindrical. Preferably, the peripheral outer wall of the detachable portion 1 may also have other shapes. Preferably, the interior of the detaching part 1 is provided with an inner cavity capable of sleeving a bolt. Preferably, the inner cavity of the disassembling part 1 is provided with an inner concave surface matched with the bolt head of the bolt, so that the inner concave surface can unscrew the bolt or the nut sleeved in the disassembling part 1 when the disassembling part 1 is unscrewed along the axial direction of the disassembling part 1. Through the configuration mode, namely, the inner cavity of the disassembling part 1 is provided with the inner concave surface matched with the bolt head of the bolt, the situation that the inner cavity of the disassembling part 1 is not matched with the bolt or the nut to damage the bolt or the nut, for example, the bolt head is damaged and the bolt head cannot be unscrewed can be prevented. Preferably, the axial centre line of the inner cavity of the dismounting part 1 coincides with the axial centre line of the dismounting part 1.

Preferably, the depth of the inner cavity of the disassembling part 1 along the axial direction of the disassembling part 1 is at least larger than the height of the bolt head of the conventional bolt, so that the bolt head of the bolt can be completely inserted into the inner cavity at least to increase the contact area of the side wall of the inner cavity of the disassembling part 1 and the circumferential outer wall of the bolt head. With this arrangement, that is, the depth of the inner cavity of the detachable portion 1 in the axial direction of the detachable portion 1 is at least greater than the height of the bolt head of a conventional bolt, it is possible to reduce the possibility that the bolt head is damaged by the detachable portion 1 while increasing the torque with which the detachable portion 1 can rotate the bolt about the axial direction of the detachable portion 1. Preferably, the inner concave surface in the inner cavity of the disassembling part 1 can be a concave twelve-angle.

Preferably, the concave surface in the inner cavity of the dismounting part 1 can also be in the shape of a square block. Preferably, the concave surface in the inner cavity of the disassembling part 1 can be set to other shapes according to actual requirements.

Preferably, the fixing portion 2 can be fitted over a circumferential surface of a nut to which the bolt corresponds. Preferably, the circumferential outer wall of the fixing portion 2 may be cylindrical. Preferably, the peripheral outer wall of the fixing portion 2 may also have other shapes. Preferably, the fixing part 2 is provided with an inner cavity capable of being sleeved with a nut. Preferably, the inner cavity of the fixing part 2 is provided with an inner concave surface matching the nut to avoid that the fixing part 2 damages the outer surface of the nut when providing the nut with a torque for preventing it from being forced to rotate with the rotation of the bolt. Through this configuration mode, be provided with in the inner chamber of fixed part 2 promptly with nut assorted inner concave surface, can prevent to receive the moment of torsion that fixed part 2 provided and take place to destroy or be out of shape through the circumference surface that makes the nut corresponding with the bolt of portion 1 unscrewing the bolt, and then guarantee to dismantle smoothly from the connecting piece or fastening bolt and nut.

Preferably, the extension 4 may have an elongated cylindrical shape. Preferably, the circumferential outer wall of the extension 4 may also have other shapes. Preferably, the axial centerline of the extension portion 4 is located on the same straight line as the axial centerline of the detachable portion 1. Preferably, the extension 4 may be integrally connected with the dissembling portion 1. Preferably, extension 4 is also removably connectable to dismantling 1, for example extension 4 is removably connectable to dismantling 1 by means of a quick-release coupling. Preferably, the extension 4 is capable of enabling a worker to unscrew the extension 4 around the axial direction of the extension 4 at a place remote from the bolt and/or the nut to transmit the torque applied to the extension 4 to the dissembler 1.

The landfill may include, but is not limited to, silt, gravel piles, soil piles, and the like.

According to a preferred embodiment, the dismounting part 1 is provided with a protrusion 101 extending towards the extension 4. The protrusion 101 is integrally connected to the detachable portion 1. The end part of the protrusion 101 close to the extension part 4 is provided with an adapter 102 capable of being clamped in the inner cavity of the extension part 4, and the end part of the extension part 4 close to the dismounting part 1 is provided with a first inner cavity 402 matched with the adapter 102, so that the dismounting parts 1 of different models can be quickly dismounted from the extension part 4 through the adapter 102.

Preferably, different models of disassembly parts 1 can match the bolt heads of different models of bolts. Preferably, the crossover joint 102 may be integrally connected with the protrusion 101. Preferably, the crossover joint 102 may be of the prior art. Since the adapter 102 is well known to those skilled in the art, detailed descriptions of the adapter 102 will not be provided herein. With this arrangement, different types of disassembly portions 1 can be quickly disassembled from the extension portion 4 through the crossover joint 102 to accommodate different types of bolts or other similar fasteners (e.g., threaded rods).

According to a preferred embodiment, one end of the connecting part 3 close to the fixing part 2 is fixedly connected with the circumferential outer wall of the fixing part 2, so that the connecting part 3 can provide the nut with a torque for preventing the connecting part 3 from being forced to rotate along with the rotation of the bolt IIa when the detaching part 1 unscrews the bolt IIa, along with the rotation of the fixing part 2 for a certain distance, and the fixing part 2 can be switched from the first position to the second position when the nut is detached or separated from the bolt IIa, so that the fixing part can be smoothly lifted to the ground by the connecting part without the blockage of the connecting part II.

Preferably, the first position is that the fixing portion is sleeved on the nut, and the plane of the fixing portion is perpendicular to the axial center line of the bolt IIa.

Preferably, the second position is a position where the plane of the fixing portion is perpendicular to the horizontal plane, i.e. the fixing portion is in a hanging state.

The connection part 3 includes a rotation member 301, a first connection member 302, a second connection member 303, a third connection member 304, and a switching button 305. Preferably, the rotating element 301 may have a circular ring shape.

Preferably, the rotating element 301 of the connection portion 3 is rotatably connected to the circumferential outer wall of the protrusion 101.

Preferably, the first connection element 302 is connected to the circumferential outer wall of the rotating element 301. Preferably, the first connection element 302 may be perpendicular to the axial centerline of the rotational element 301. Preferably, the end of the first connection element 302 remote from the rotation element 301 is connected with the second connection element 303. The first connection element 302 may be perpendicular to the second connection element 303.

Preferably, the end of the second connection element 303 remote from the first connection element 302 is connected to a third connection element 304, wherein the second connection element 303 may be perpendicular to the third connection element 304.

Preferably, the switch button 305 is connected to the side of the rotating element 301 close to the extending portion, so that the switch button 305 can abut against the end of the extending portion close to the removing portion when the nut clamped by the fixing portion and the bolt IIa clamped by the removing portion have been separated, so that the switch button 305 can change the connecting portion from the rigid connection state to the flexible connection state. Preferably, the switch button 305 may be connected to the third connecting element 304 via an internal connecting element, wherein the second connecting element 303 and the third connecting element 304 may be rotatably connected via a rotating shaft. Preferably, when the switch button 305 is not abutted with the end of the extension portion close to the detaching portion, the internal connecting element can be inserted inwards along the radial direction of the rotating shaft to make the second connecting element 303 and the third connecting element 304 in a rigid connection state, i.e. the third connecting element 304 cannot rotate around the end of the second connecting element 303 far away from the first connecting element 302 because the internal connecting element and the inner cavity of the third connecting element 304 are blocked or fixed with each other.

Preferably, when the switch button 305 abuts against the end of the extension part close to the detaching part (the switch button 305 is pressed), the internal connecting element can be drawn out radially outward along the rotating shaft to release the state that the internal connecting element and the third connecting element 304 or the inner cavity of the second connecting element 303 are blocked or fixed with each other, so that the second connecting element 303 and the third connecting element are in a flexible connection state, that is, the third connecting element can freely rotate around the end of the second connecting element 303 far away from the first connecting element 302.

Preferably, the person skilled in the art can also use other ways to realize the transition of at least part of the structure of the connecting portion (for example, the second connecting element 303 and the third connecting element) from the rigid connection state to the flexible connection state, and it is easy for the person skilled in the art to find various alternative embodiments of the transition of the connecting portion from the rigid connection state to the flexible connection state from the prior art, so that the description of the transition of the connecting portion from the rigid connection state to the flexible connection state is omitted here.

Preferably, when the nut clamped by the fixing portion is not separated from the bolt clamped by the detaching portion, the connecting portion is in a rigid connection state, i.e. the relative positional relationship among the first connecting element 302, the second connecting element 303 and the third connecting element is kept unchanged.

Preferably, when the nut clamped by the fixing portion and the bolt clamped by the detaching portion are separated, the connecting portion is in a flexible connection state, that is, the relative positional relationship of at least one or more of the first connecting element 302, the second connecting element 303 and the third connecting element can be changed.

Particularly preferably, when the nut held by the fixing portion is separated from the bolt held by the detaching portion, the second connecting element 303 and the third connecting element are changed from the rigid connection when the bolt is not separated to the free rotation along the end portion of the second connecting element 303 away from the ground, so that the fixing portion can be changed from the state where the plane of the fixing portion is perpendicular to the axial center line of the bolt to the overhanging state, and further the fixing portion can be located outside the radial radius of the connecting member II and smoothly lifted to the ground through the connecting portion.

This is provided because the fixing part cannot be removed from below the connecting part II to beyond the radial radius of the connecting part II simply by translating the extension part to translate the fixing part in the field construction. On one hand, due to the fact that the height and the weight of the extending part are large, a constructor cannot conveniently move horizontally on the ground, and on the other hand, even if the extending part can move horizontally, the construction amount of the whole disassembling process is increased, and the construction period is prolonged. And through above-mentioned configuration, when the nut that bolt and fixed part centre gripping that centre gripping was held through dismantling the portion when separating, the at least partial structure of connecting portion can be changed into the flexible connection state from rigid connection state to make the fixed part can be in the state of dangling, and be outside connecting piece II's radial radius, thereby can promote the extension portion and rise connecting portion and the fixed part of being connected with connecting portion from connecting structure's below to ground smoothly through promoting along vertical direction, avoided connecting piece II's blockking, meanwhile also simplified the construction flow, accelerated construction period.

Preferably, the second inner cavity 202 of the fixing portion 2 is provided with an adhesive body such as grease to prevent the nut and the like clamped by the fixing portion from falling into the bolt hole of the foundation pit or the steel pipe column from the second inner cavity of the fixing portion during the shaking process.

Preferably, the connecting portion 3 may be made of a material having high rigidity and strength, such as steel. Preferably, the connecting portion 3 may have a semicircular shape. Preferably, the connecting portion 3 may also be a rectangular frame, wherein one edge of the rectangular frame is missing, so as to connect the connecting portion 3 with the fixing portion 2 and the detaching portion 1 by bypassing the protruding portion to which the bolt is connected. Preferably, the connecting portion 3 may also have other suitable shapes according to the actual application.

According to a preferred embodiment, the side of the second cavity 202 of the fixing part 2 remote from the detachable part 1 is provided with a flange extending inwards in the radial direction of the second cavity 202, so that the flange can exert a lifting force towards the detachable part 1 in the axial direction of the second cavity 202 towards the detachable part 1 by the flange when the detachable part 1 is unfastened from the bolt, corresponding to the nut.

Preferably, the flange is integrally and smoothly connected to the bottom of the fixing portion 2. Preferably, the flange may be of a circular ring type to contact the bottom of the nut in the fixing part 2 through the flange. Preferably, an opening in the middle of the flange may be used to pass a corresponding bolt of the nut. Preferably, the flange can be provided in other shapes according to actual requirements. With this arrangement, a lifting force for pushing the bolt out of the connector toward the detaching portion 1 in the axial direction of the second cavity 202 can be applied to the bolt corresponding to the nut through the flange of the fixing portion 2, so as to prevent the bolt from being stuck in the bolt hole of the connector due to thread slipping and the like.

According to a preferred embodiment, the end of the connection portion 3 remote from the fixed portion 2 is rotatably connected to the circumferential outer wall of the protrusion 101 in such a way as to enable the removal portion 1 to move towards or away from the fixed portion 2.

Preferably, the end of the connecting portion 3 near the protrusion 101 is movably connected to the circumferential outer wall of the protrusion 101 in a threaded manner. Preferably, the circumferential outer wall of the protrusion 101 is provided with a thread matching the end of the protrusion 101. By this arrangement, that is, one end of the connecting part 3 away from the fixing part 2 (i.e., the rotating element 301 of the connecting part 3) is rotatably connected to the circumferential outer wall of the protrusion 101, a certain moving space can be provided for the bolt to be withdrawn from the bolt when the bolt is withdrawn from the detaching part 1 along the circumferential direction of the corresponding bolt hole under the combined action of the unscrewing of the detaching part 1 and the lifting force of the flange of the fixing part 2, so as to ensure that the bolt can be smoothly withdrawn from the bolt hole.

According to a preferred embodiment, the plane of at least a part of the side wall of the third inner cavity 103 of the dismounting portion 1 radially inwards of the dismounting portion 1 is angled with respect to the axial centre line of the third inner cavity 103, so that the third inner cavity 103, after the bolt is received in the third inner cavity 103, provides the bolt with a clamping force radially inwards of the dismounting portion 1 and/or a friction force in the axial direction of the dismounting portion 1.

Preferably, the planes of the side walls in the third inner cavity 103 of the dismounting part 1 which are inward along the radial direction of the dismounting part 1 are all at certain included angles with the axial center line of the third inner cavity 103. Preferably, the radius of the third inner cavity 103 of the dismounting part 1 gradually decreases from the entrance of the third inner cavity 103 to the depth of the third inner cavity 103. Preferably, the above-mentioned angle may range between one and three degrees. Preferably, the range of the included angle can also be flexibly set according to actual requirements. By this arrangement, it is possible to make the third inner cavity 103 capable of providing the bolt with a clamping force radially inward of the disassembled part 1 and/or a frictional force toward the extended part 4 in the axial direction of the disassembled part 1 after the bolt is engaged with the third inner cavity 103, thereby preventing the bolt from falling again into the landfill during the process of being taken out of the bolt hole of the connecting member.

According to a preferred embodiment, the length of the connecting portion 3 in the axial direction of the detachable portion 1 and/or the fixing portion 2 is greater than the length of the bolt, so that the connecting portion 3 can provide sufficient space for the bolt clamped by the detachable portion 1 to be able to be smoothly taken out from the bolt hole of the connecting member.

According to a preferred embodiment, the end of the extension part 4 remote from the detachable part 1 is provided with at least one set of external force application points 401 to apply a certain torque to the extension part 4 and the detachable part 1 connected to the extension part 4 through the external force application points 401.

Preferably, the external force application point 401 may be at least one through hole provided on an end of the extension portion 4 away from the detachable portion 1. Preferably, the number of the through holes is also plural. Preferably, a plurality of sets of external force application points 401 may be provided at equal intervals at one end of the extension portion 4 away from the detachable portion 1. Preferably, the external force application point 401 may also adopt other forms of components according to actual requirements. Preferably, the worker can unscrew the extension 4 around the axial direction of the extension 4 by inserting a lever or the like into the through hole.

According to a preferred embodiment, the extension 4 is able to connect the extension 4 movably to other fixed platforms by means of a connection ring 5, so as to enable at least the axial centre line of the rotating extension 4 to be always in line with the axial centre line of the dismounting part 1.

Preferably, the other fixed platform can be a tool joint connected with the connecting piece or a steel pipe column or the like.

Preferably, the connection ring 5 may have a circular ring shape. Preferably, the connection ring 5 may be a steel ring. Preferably, the extension 4 may pass through the connection ring 5. Preferably, the connection ring 5 may be fixedly connected to a circumferential outer wall surface of the tool section connected to the connector. Preferably, the connection ring 5 is also detachably connected to the circumferential outer wall surface of the tool segments connected to the coupling member. Preferably, the number of the connection rings 5 may be plural.

The use method of the connecting piece disassembling mechanism of the supporting structure comprises the following steps: the extension part 4, the dismounting part 1 and the fixing part 2 which are connected with the extension part 4 are movably connected with other fixing platforms which are connected with the connecting piece through a connecting ring 5; sleeving a bolt and a nut on the disassembling part 1 and the fixing part 2 respectively; applying a torque to the extension portion 4 and the detaching portion 1 connected to the extension portion 4 by rotating the extension portion 4 to detach the bolt and the nut; the removed bolt and nut are removed by lifting the extension 4.

To facilitate understanding of the working principle of the present invention, the use of the connector detachment mechanism is briefly described as follows: first, the extension part 4 and the detachable part 1 and the fixed part 2 connected to the extension part 4 are movably connected to other fixed platforms connected to the connection member through the connection ring 5. Next, the bolt and the nut are respectively fitted to the detachable portion 1 and the fixed portion 2. Thereafter, a torque is applied to the extension portion 4 and the detaching portion 1 connected to the extension portion 4 by rotating the extension portion 4 clockwise or counterclockwise to detach the bolt and the nut. Meanwhile, after the fixing part 2 and the connecting part 3 connected with the fixing part 2 rotate for a certain distance along with the unscrewing of the detaching part 1, the connecting part 3 is abutted against the flange of the connecting piece (the joint part of the tool joint and the steel pipe column), and at the moment, the flange contacted with the fixing part 2 can provide a torque for preventing the nut sleeved on the fixing part 2 from continuously rotating along the axial direction of the detaching part 1 to the fixing part 2 through the connecting part 3. Then, the disassembling part 1 is continuously unscrewed, and the bolt and the nut in threaded connection with the bolt are gradually separated, so that the aim of disassembling is fulfilled. Thereafter, the extension 4 is moved outward in the radial direction of the coupling member, and the extension 4 is lifted upward in the vertical direction to take out the removed bolt together with the nut.

It should be noted that the above-mentioned embodiments are exemplary, and that those skilled in the art, having benefit of the present disclosure, may devise various arrangements that are within the scope of the present disclosure and that fall within the scope of the invention. It should be understood by those skilled in the art that the present specification and figures are illustrative only and are not limiting upon the claims. The scope of the invention is defined by the claims and their equivalents.

The present specification encompasses multiple inventive concepts and the applicant reserves the right to submit divisional applications according to each inventive concept. The present description contains several inventive concepts, such as "preferably", "according to a preferred embodiment" or "optionally", each indicating that the respective paragraph discloses a separate concept, the applicant reserves the right to submit divisional applications according to each inventive concept.

Claims (10)

1. A connecting member detaching mechanism of a support structure, wherein a connecting member (II) is fastened and connected by a bolt (IIa) and a nut (IIb), characterized by comprising at least:

a detaching part (1) configured to be capable of being fitted at least to the bolt (IIa) and capable of unscrewing at least the bolt (IIa) around an axial direction of the bolt (IIa);

a fixing part (2) movably connected with the detaching part (1) through a connecting part (3), wherein the fixing part (2) is configured to be sleeved on a nut (IIb) corresponding to the bolt (IIa) and provide the nut (IIb) with a torque for preventing the nut (IIb) from being forced to rotate along with the rotation of the bolt (IIa);

an extension (4), said extension (4) being connectable with said detachable part (1), said detachable part (1) being configured such that a worker can transmit a torque applied to said extension (4) to said detachable part (1) through said extension (4) at a point remote from said bolt (IIa) and/or nut (IIb);

wherein, in the case where the connecting member (II) and the bolt (IIa) and nut (IIb) thereon are not under the landfill body, the detaching part (1) is configured to be able to detach the bolt (IIa) and the nut (IIb) connected to the bolt (IIa) and to take out the bolt (IIa) and nut (IIb) from the connecting member by merely rotating the extending part (4) about the axial direction of the extending part (4) in cooperation with the fixing part (2).

2. The connector detachment mechanism according to claim 1, characterized in that the detachment portion (1) is provided with a protrusion (101) extending towards the extension portion (4), the protrusion (101) being integrally connected with the detachment portion (1),

the end part of the protrusion (101) close to the extension part (4) is provided with an adapter (102) which can be clamped in the inner cavity of the extension part (4), and the end part of the extension part (4) close to the dismounting part (1) is provided with a first inner cavity (402) matched with the adapter (102), so that the dismounting parts (1) of different models can be quickly dismounted from the extension part (4) through the adapter (102).

3. The connector detachment mechanism according to claim 2, characterized in that the end of the connecting portion (3) close to the fixed portion (2) is fixedly connected to the peripheral outer wall of the fixed portion (2), so that the connecting part (3) can provide the nut (IIb) with a torque for preventing the nut (IIb) from being forced to rotate along with the rotation of the bolt (IIa) when the connecting part (3) abuts against the connecting piece after the fixing part (2) rotates for a certain distance when the dismounting part (1) unscrews the bolt (IIa), wherein the connecting part (3) is capable of being transferred from a first position to a second position when the nut (IIb) is removed or separated from the bolt (IIa), thereby the fixing part can avoid the block of the connecting piece (II) and be smoothly lifted to the ground by the connecting part.

4. The coupling release mechanism according to claim 3, characterized in that the side of the second cavity (202) of the fixing part (2) facing away from the release part (1) is provided with a flange extending inwards in the radial direction of the second cavity (202), so that the flange can exert a lifting force by the flange towards the release part (1) in the axial direction of the second cavity (202) towards the release part (1) for pushing the bolt (IIa) out of the coupling when the release part (1) unscrews the bolt (IIa).

5. The connector detachment mechanism according to claim 4, characterized in that the end of the connection portion (3) remote from the fixed portion (2) is rotatably connected to the peripheral outer wall of the protrusion (101) in such a way that the detachment portion (1) can move towards or away from the fixed portion (2).

6. The connector disassembling mechanism according to claim 5, characterized in that a plane of at least a portion of a radially inward sidewall of the disassembling portion (1) in the third cavity (103) of the disassembling portion (1) has an included angle with an axial center line of the third cavity (103), so that the third cavity (103) can provide a clamping force radially inward of the disassembling portion (1) and/or a friction force along an axial direction of the disassembling portion (1) to the bolt (IIa) after the bolt (IIa) is sleeved in the third cavity (103), wherein the included angle ranges from one to five degrees.

7. The coupling disassembly mechanism of claim 6, wherein the length of the connection part (3) in the axial direction of the disassembly part (1) and/or the fixation part (2) is greater than the length of the bolt (IIa) so that the connection part (3) can provide sufficient play space for the bolt (IIa) clamped by the disassembly part (1) to ensure that the bolt (IIa) can be smoothly removed from the bolt hole of the coupling.

8. The connector detachment mechanism according to claim 7, characterized in that the end of the extension (4) remote from the detachment portion (1) is provided with at least one set of external force application points (401) to apply a certain torque to the extension (4) and the detachment portion (1) connected to the extension (4) through the external force application points (401).

9. The connector detachment mechanism according to claim 8, characterized in that the extension (4) is able to connect the extension (4) movably to other fixed platforms by means of a connection ring (5), at least so as to enable the axial centreline of the rotating extension (4) to be always collinear with the axial centreline of the detachment portion (1).

10. A use method of a connecting piece disassembling mechanism of a supporting structure is characterized by comprising the following steps: the extension part (4) and the disassembly part (1) and the fixed part (2) which are connected with the extension part (4) are movably connected with other fixed platforms which are connected with the connecting piece through a connecting ring (5); sleeving a bolt (IIa) and a nut (IIb) on the detaching part (1) and the fixing part (2) respectively; applying a torque to the extension portion (4) and the detachment portion (1) connected to the extension portion (4) by rotating the extension portion (4) to detach the bolt (IIa) and the nut (IIb); the detached bolt (IIa) and nut (IIb) are removed by lifting the extension (4).

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