CN213828735U - Dismounting device of clamp steel ring - Google Patents

Abstract

The utility model provides a dismounting device of clamp steel ring, include: the device comprises two spaced brackets, a pipeline sleeving device and a pipeline sleeving device, wherein each bracket is provided with a locking hole for sleeving a pipeline, and the locking holes on the two brackets are coaxial; the locking piece is arranged on the bracket in a manner of moving along the radial direction of the locking hole, and at least part of the locking piece can move into the locking hole; the telescopic rod is positioned between the two brackets, one end of the telescopic rod is connected with one bracket, and the other end of the telescopic rod is connected with the other bracket. The clamp steel ring can be firmly fixed on two pipelines, so that the relative position of the two pipelines can be easily moved by the dismounting device, and the clamp steel ring can be quickly dismounted.

Description

Dismounting device of clamp steel ring

Technical Field

The utility model relates to a pipeline dismouting technical field, in particular to dismounting device of clamp steel ring.

Background

Because the fluid medium that oil recovery, oil pipeline carried in the oil and gas field have certain corrosivity, and the pipeline also bears higher pressure, consequently, often appear corroding the thorn easily on the pipeline and leak, seal the damage scheduling problem, and then can cause pipeline equipment outage, environmental pollution, incident. In order to ensure the safe and stable operation of the pipeline, the damaged pipeline needs to be replaced in time. The joints of the pipes are usually connected and sealed by hoop and steel rings. The hoop steel ring comprises a clamp and a steel ring, the steel ring is sleeved at the pipe orifice butt joint of the two adjacent pipelines, and the clamp is sleeved on the steel ring to clamp and fix the pipe orifices of the two adjacent pipelines. Therefore, when the damaged pipeline is replaced, the hoop steel ring needs to be detached from the pipeline firstly.

When dismantling the hoop steel ring in the related art, firstly, a technician needs to use a tool to dismantle the clips on the two pipelines connected by the hoop steel ring. Then, a disassembling tool is used for simultaneously applying opposite acting forces to two adjacent pipelines so as to separate the two pipelines by a certain distance in the axial direction, and then the steel ring on the hoop steel ring is disassembled. And finally, replacing a new hoop steel ring to complete the disassembly and assembly of the hoop steel ring.

However, when the pipe is clamped by the disassembling tool adopted in the related art, the problem of insufficient fastening force is easily caused, so that when the disassembling tool applies opposite acting force to the two pipes, the disassembling tool is easily slid relative to the pipes, and quick disassembling is not convenient.

SUMMERY OF THE UTILITY MODEL

The embodiment of the disclosure provides a dismounting device for a hoop steel ring, which can be firmly fixed on two pipelines, so that the dismounting device can easily move the relative positions of the two pipelines to quickly dismount the hoop steel ring. The technical scheme is as follows:

the embodiment of the present disclosure provides a dismounting device of clamp steel ring, dismounting device includes: the device comprises two spaced brackets, a pipeline sleeving device and a pipeline sleeving device, wherein each bracket is provided with a locking hole for sleeving a pipeline, and the locking holes on the two brackets are coaxial; the locking piece is arranged on the bracket in a manner of moving along the radial direction of the locking hole, and at least part of the locking piece can move into the locking hole; the telescopic rod is positioned between the two brackets, one end of the telescopic rod is connected with one bracket, and the other end of the telescopic rod is connected with the other bracket.

In one implementation of the disclosed embodiment, the lock includes: the locking mechanism is connected with the locking sliding block so as to adjust the length of the locking sliding block extending into the locking hole and lock the locking sliding block.

In another implementation of an embodiment of the present disclosure, the locking mechanism includes: the screw rod penetrates through the transmission block and is in threaded fit with the transmission block, one end of the screw rod is rotatably installed on the locking sliding block, and the transmission block is located on the support.

In another implementation manner of the embodiment of the present disclosure, the locking member further includes a baffle, the baffle has an installation through hole, the locking slider has an installation groove for inserting the screw rod, the baffle is installed in the locking slider and located at the installation groove, the screw rod is located in the installation through hole, one end of the screw rod has an outer flange, an outer diameter of the outer flange is greater than an inner diameter of the installation through hole, and one end of the screw rod having the outer flange is inserted in the installation groove.

In another implementation manner of the embodiment of the present disclosure, the bracket includes a first half ring clamp and a second half ring clamp, one end of the first half ring clamp is hinged to one end of the second half ring clamp, the other end of the first half ring clamp is detachably connected to the other end of the second half ring clamp, and the first half ring clamp and the second half ring clamp form the locking hole when connected.

In another implementation manner of the embodiment of the present disclosure, a first ear plate is disposed at the other end of the first half-ring clamp, a second ear plate is disposed at the other end of the second half-ring clamp, and when the first half-ring clamp is connected to the second half-ring clamp, the first ear plate is connected to the second ear plate through a pin.

In another implementation of the disclosed embodiment, the telescoping rod is a jack.

In another implementation manner of the embodiment of the present disclosure, a side surface of the bracket connected to the telescopic column of the jack is provided with a limiting portion, the limiting portion is provided with a limiting groove, and an end of the telescopic column of the jack is located in the limiting groove.

In another implementation manner of the embodiment of the present disclosure, the telescopic rod includes a telescopic sleeve and two telescopic screws, the thread turning directions of the two telescopic screws are opposite, two ends of the telescopic sleeve are respectively in threaded connection with one ends of the two telescopic screws, and the other ends of the two telescopic screws are respectively in connection with the two brackets.

In another implementation of the disclosed embodiment, there are two of the jacks, and the two jacks are symmetrically arranged with respect to the locking hole.

The beneficial effects brought by the technical scheme provided by the embodiment of the disclosure at least comprise:

the dismounting device of the hoop steel ring provided by the embodiment of the disclosure comprises two spaced brackets, each bracket is provided with a locking hole, and the locking holes on the two brackets are coaxially arranged. When the pipeline clamping device is used, two adjacent pipelines are respectively inserted into the locking holes of the two supports, and then the locking pieces stretch towards the locking holes along the radial direction, so that radial acting force pointing to the centers of the locking holes is applied to the pipelines in the locking holes by the aid of the locking pieces, the pipelines are clamped, and the pipelines can be firmly fixed on the supports. Then, exert the effort of keeping away from each other to two supports with the help of the telescopic link that is located between two supports to promote two supports and keep away from each other, pull open two pipelines, thereby accomplish the dismantlement and the change of clamp steel ring fast.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

FIG. 1 is a schematic view of a hoop steel ring installed on a pipeline provided by the related art;

fig. 2 is a schematic structural diagram of a dismounting device for a hoop steel ring according to an embodiment of the present disclosure;

FIG. 3 is a schematic view of an assembled bracket and locking member according to an embodiment of the present disclosure;

FIG. 4 is a schematic view of an alternative bracket and locking member assembly according to an embodiment of the present disclosure;

FIG. 5 is a schematic structural diagram of a dismounting device for a hoop steel ring according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of a centralizer provided by embodiments of the present disclosure;

fig. 7 is a schematic structural diagram of another centralizer provided by the embodiments of the present disclosure.

Detailed Description

To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

Fig. 1 is a schematic view of a hoop steel ring installed on a pipeline provided by the related art. As shown in fig. 1, the hoop steel ring includes a clip 51 and a steel ring 52, the steel ring 52 is used to be sleeved at the pipe openings of two adjacent pipes a and B, after the pipe openings of the pipes a and B are butted, a part of the steel ring 52 is sleeved at the pipe opening of the pipe a, and the other part of the steel ring 52 is sleeved at the pipe opening of the pipe B. After the steel ring 52 is sleeved, the clip 51 is sleeved on the steel ring 52 to clamp and fix the pipe openings of the pipeline a and the pipeline B.

Because a part of the steel ring 52 is sleeved on the pipeline a and the other part of the steel ring 52 is sleeved on the pipeline B, when the damaged pipeline is maintained and replaced, two adjacent pipelines need to be separated by a certain distance in the axial direction, so that the steel ring 52 can be conveniently detached from the pipelines.

In the related art, a disassembling tool is usually used to simultaneously apply opposite forces to two adjacent pipes, so that the two pipes are separated by a certain distance in the axial direction, thereby facilitating the disassembly and assembly of the hoop steel ring. However, when the pipe is clamped by the dismounting tool, the problem of insufficient fastening force is easy to occur, so that the dismounting tool and the pipe are easy to slide relatively, and the dismounting tool is inconvenient to dismount quickly.

Fig. 2 is a schematic structural diagram of a dismounting device for a hoop steel ring according to an embodiment of the present disclosure. As shown in fig. 2, the detaching device includes: support 1, locking piece 2 and telescopic link 3.

As shown in figure 2, the two brackets 1 are arranged oppositely at intervals, each bracket 1 is provided with a locking hole 10 for sleeving a pipeline, and the locking holes 10 on the two brackets 1 are coaxial.

Wherein the locking piece 2 is arranged on the bracket 1 in a manner of being capable of moving along the radial direction of the locking hole 10, and the locking piece 2 can move into the locking hole 10 at least partially.

Wherein, telescopic link 3 is located between two supports 1, and the one end and the support 1 of telescopic link 3 are connected, and the other end and another support 1 of telescopic link 3 are connected.

The dismounting device of the hoop steel ring provided by the embodiment of the disclosure comprises two spaced brackets, each bracket is provided with a locking hole, and the locking holes on the two brackets are coaxially arranged. When the pipeline clamping device is used, two adjacent pipelines are respectively inserted into the locking holes of the two supports, and then the locking pieces stretch towards the locking holes along the radial direction, so that radial acting force pointing to the centers of the locking holes is applied to the pipelines in the locking holes by the aid of the locking pieces, the pipelines are clamped, and the pipelines can be firmly fixed on the supports. Then, exert the effort of keeping away from each other to two supports with the help of the telescopic link that is located between two supports to promote two supports and keep away from each other, pull open two pipelines, thereby accomplish the dismantlement and the change of clamp steel ring fast.

Fig. 3 is an assembly view of a bracket and a locking member according to an embodiment of the disclosure. As shown in fig. 3, the bracket 1 includes a first half ring clamp 11 and a second half ring clamp 12, one end of the first half ring clamp 11 is hinged to one end of the second half ring clamp 12, the other end of the first half ring clamp 11 is detachably connected to the other end of the second half ring clamp 12, and a locking hole 10 is formed when the first half ring clamp 11 is connected to the second half ring clamp 12.

In the embodiment of the present disclosure, the stent 1 may further include two stent bodies 1a, one stent body 1a is located outside and connected to the first semi-ring clamp 11, and the other stent body 1a is located outside and connected to the second semi-ring clamp 12.

The bracket body 1a can be in various structural forms such as a flat plate, a double-layer splint and a cylindrical structure.

Illustratively, as shown in fig. 2, when the bracket body 1a is a flat plate, two flat plates are arranged in parallel and spaced apart, each of the two flat plates has a locking hole 10, the locking member 2 may be located on either side of the flat plate, and the telescopic rod 3 may be located between opposite sides of the two parallel flat plates.

Illustratively, when the stent body 1a is a double-layered splint, the arrangement of the double-layered splint may be similar to a flat plate, and the difference between the two is that the locking member 2 may be located in the interlayer of the double-layered splint, so that the locking member 2 can be moved on the stent body 1a more reliably.

Illustratively, when the holder body 1a is a cylindrical structure, the cylindrical structure may be arranged in a manner similar to a flat plate or a double-layered splint, which is different from the foregoing two implementations in that the lock member 2 may be located in an inner cavity space of the cylindrical structure, so that the lock member 2 can be more reliably moved on the holder body 1 a.

So that the two frame bodies 1a of the frame 1 can move together with the two half-ring clamps. And set up first semi-ring clamp 11 and second semi-ring clamp 12 and can set up a plurality of telescopic links 3 around first semi-ring clamp 11 and second semi-ring clamp 12 at the middle part of support 1 to make the both sides point of application of force of first semi-ring clamp 11 and second semi-ring clamp 12 more even, thereby make support 1 atress balanced, be convenient for the jacking two relative supports 1.

In the above implementation, one end of the first half ring clamp 11 and one end of the second half ring clamp 12 are hinged to each other, so that when the first half ring clamp 11 and the second half ring clamp 12 are combined and connected, the locking hole 10 can be formed between the first half ring clamp 11 and the second half ring clamp 12. Thus, by controlling the first half-ring clamp 11 and the second half-ring clamp 12 to be separated from each other, the pipeline can be easily placed in the two half-ring clamps, and the installation is convenient.

In the embodiment of the present disclosure, one end of the first half ring clamp 11 and one end of the second half ring clamp 12 are hinged to each other, the other end of the first half ring clamp 11 may be provided with the first ear plate 13, the other end of the second half ring clamp 12 may be provided with the second ear plate 14, and when the first half ring clamp 11 and the second half ring clamp 12 are connected, the first ear plate 13 and the second ear plate 14 are connected through the pin 15. That is, when the first half ring clamp 11 and the second half ring clamp 12 are combined and connected, the pin 15 is inserted into the through holes of the first ear plate 13 and the second ear plate 14 to fix the first ear plate 13 and the second ear plate 14 together, thereby preventing the first half ring clamp 11 and the second half ring clamp 12 from being separated from each other.

As shown in fig. 2, the first semi-ring clip 11 is provided with two first ear plates 13, the two first ear plates 13 are arranged in parallel at intervals, and the first ear plates 13 are parallel to the bracket 1. The second half-ring clamp 12 is provided with a second ear plate 14, and the second ear plate 14 is parallel to the bracket 1. When first semi-ring clamp 11 and second semi-ring clamp 12 merge the connection, second otic placode 14 can imbed the clearance between two first otic placodes 13, treats that the through-hole of three otic placode is coaxial when, through round pin axle 15 cartridge in the through-hole of three otic placode to avoid three otic placode separation. In this way, the reliability of connection between the first half ring clip 11 and the second half ring clip 12 can be improved by interposing the second lug plate 14 between the two first lug plates 13.

As shown in fig. 2 and 3, the lock member 2 includes: the locking mechanism comprises a locking slide block 21 and a locking mechanism, wherein at least part of the locking slide block 21 is positioned in the locking hole 10, and the locking mechanism is connected with the locking slide block 21 so as to adjust the length of the locking slide block 21 extending into the locking hole 10 and lock the locking slide block 21.

Among the above-mentioned implementation, locking slider 21 can slide on a support body 1a of support 1, and the one end of locking slider 21 is located locking hole 10, and when locking slider 21 slided to locking hole 10, can support the pipeline to promote the pipeline and also closely laminate with the inner wall in locking hole 10, thereby increase the frictional force between the inner wall in pipeline and locking hole 10. Meanwhile, the friction force between the locking slide block 21 and the pipeline is increased due to the fact that the locking slide block 21 abuts against the pipeline. After the locking slide block 21 is adjusted to a proper position, the locking slide block 21 can be locked on the bracket 1 through the locking piece 2, namely, the locking slide block 21 is prevented from easily sliding after the position is determined, so that the pipeline can be firmly fixed on the bracket 1, the relative position of the two pipelines can be easily moved by the dismounting device, and the clamp steel ring can be quickly dismounted.

Optionally, resistance increasing structures can be further arranged on the inner wall of the locking hole 10 and the end face of the locking slide block 21, which is abutted against the pipeline. The friction force between the pipeline and the locking slide block 21 can be increased through the resistance-increasing structure, so that the pipeline is prevented from sliding relatively in the locking hole 10, and the connection reliability is improved.

For example, as shown in fig. 3, the inner wall of the locking hole 10 and the end of the locking slider 21 may be provided with anti-slip teeth D, and the anti-slip teeth D are in contact with the pipe to effectively increase the friction force between the locking hole 10 and the pipe.

As shown in fig. 2, the locking mechanism may include: the screw 22 and the transmission block 23, the screw 22 runs through the transmission block 23 and is in threaded fit with the transmission block 23, one end of the screw 22 is rotatably installed on the locking slide block 21, and the transmission block 23 is located on the bracket 1.

In the above implementation manner, the screw 22 penetrates through the transmission block 23 and is in threaded fit with the transmission block 23, and the transmission block 23 is located on one bracket body 1a of the bracket 1, so when the screw 22 is rotated, the screw 22 will make linear motion relative to the transmission block 23, because the other end of the screw 22 is rotatably installed on the locking slider 21, the locking slider 21 will not be driven to rotate together in the rotation process of the screw 22, and the locking slider 21 will be driven to make linear motion together by the linear motion of the screw 22, so as to adjust the position of the locking slider 21 in the locking hole 10. After the rotation is stopped, the locking slide 21 is prevented from sliding by itself by the locking action of the screw pair, so that the locking slide 21 is fixed on the bracket 1.

Alternatively, as shown in fig. 2, the bracket body 1a of the bracket 1 may be a double-layered splint, that is, the bracket body 1a includes two flat plates arranged at intervals, the transmission block 23 may be arranged between the two flat plates, and two side surfaces of the transmission block 23 are respectively connected with the opposite plate surfaces of the two flat plates, so as to reliably fix the transmission block 23 on the bracket 1.

In the implementation manner, the screw 22 and the locking slider 21 can be arranged between two flat plates, and the flat plates are used for limiting and guiding the screw 22 and the locking slider 21, so that the locking slider 21 is prevented from deviating from a proceeding route in the sliding process.

As shown in fig. 2, the locking member 2 may further include a blocking plate 24, the blocking plate 24 has a mounting through hole 27, the locking slider 21 has a mounting groove 25 for the insertion of the threaded rod 22, the blocking plate 24 is mounted on the locking slider 21 and located at the mounting groove 25, the threaded rod 22 is located in the mounting through hole 27, one end of the threaded rod 22 has an outer flange 26, the outer diameter of the outer flange 26 is greater than the inner diameter of the mounting through hole 27, and one end of the threaded rod 22 having the outer flange 26 is inserted in the mounting groove 25. The screw 22 is prevented from falling off the locking slider 21 by placing the outer flange 26 in the mounting groove 25 and locking the annular flange 26 in the mounting groove 25 by the stopper 24.

In the above implementation manner, the installation through hole 27 on the baffle plate 24 may be consistent with the diameter of the screw rod 22, and the installation groove 25 may be set to be a cylindrical groove, and the inner diameter of the installation groove 25 is consistent with the outer diameter of the annular flange 26, so that after the locking sliding block 21 is installed on the screw rod 22, the locking sliding block 21 is not prone to shaking.

The telescopic rod 3 may be a jack, for example. Fig. 4 is a schematic view illustrating an assembly of another bracket 1 and a locking member 2 according to an embodiment of the disclosure. As shown in fig. 4, the bracket 1 is provided with four screw holes C, and two screw holes C are respectively distributed on two sides of the locking hole 10. In the embodiment of the present disclosure, two jacks are provided, and the two jacks are respectively disposed on two sides of the locking hole 10. The bases of the two jacks can be respectively fixed on the bracket body 1a of the bracket 1 through screw holes C located at both sides of the stop hole 10 to mount the bases of the jacks on one bracket 1. And the telescopic column of the jack can be directed towards the other support 1. Therefore, when the jack works in a telescopic mode, the telescopic column of the jack can prop against the other support 1 to move, and the purpose that the two supports 1 are separated from each other is achieved.

Optionally, a side surface of the bracket 1 connected to the telescopic column of the jack is provided with a limiting portion 16, the limiting portion 16 is provided with a limiting groove 160, and an end of the telescopic column of the jack is located in the limiting groove 160. Through set up spacing portion 16 on support 1 to set up spacing groove 160 in spacing portion 16, place the flexible post of jack in spacing groove 160, just so make the point of application of force of jack stabilize on spacing portion 16, prevent that the crooked condition from appearing in the flexible post of jack application of force process, improve the reliability.

For example, as shown in fig. 2, the limiting portion 16 may include a connecting rod 161 and a cap 162, one end of the connecting rod 161 is connected to the bracket 1, the other end of the connecting rod 161 is connected to the cap 162, and an open end of the cap 162 is opposite to the other bracket 1, so that the telescopic column of the jack can be inserted into the cap 162, thereby preventing the telescopic column from skewing during the force application process of the jack, and improving reliability.

It should be noted that the number and the arrangement position of the limiting portions 16 may be determined according to the number and the arrangement position of the jacks, as long as the telescopic columns of the jacks are always located in the limiting grooves 160 in the telescopic process, and the embodiment of the present disclosure is not limited.

Exemplarily, fig. 5 is a schematic structural diagram of a hoop steel ring dismounting device provided by the embodiment of the present disclosure. As shown in fig. 5, the two telescopic screws 32 have external threads with different turning directions on the shaft of the telescopic sleeve 31, two ends of the telescopic sleeve 31 are respectively in threaded connection with one ends of the two telescopic screws 32, and the other ends of the two telescopic screws 32 are respectively connected with the two brackets 1.

When the telescopic screw is used as a connecting mode of the telescopic rod to control the separation of the two supports 1, firstly, the clip 51 in the pipeline is detached, and the first semi-ring clamp 11 and the second semi-ring clamp 12 are separated, so that the first semi-ring clamp 11 and the second semi-ring clamp 12 on the two supports 1 are respectively clamped on the two pipelines. Then, a tool is used to rotate the telescopic sleeve 31, causing the two telescopic screws 32 to separate from each other, so that the two brackets 1 separate from each other, thereby pulling the two adjacent pipes apart by a certain distance. The steel ring 52 is then removed from the pipe.

In the above implementation, the telescopic rod 3 may be provided with a plurality of sets. For example, two sets of telescopic rods 3 may be provided, the two telescopic rods 3 being respectively arranged on both sides of the locking hole 10. The end of the telescopic screw 32 in each group of telescopic rods 3 can be abutted against the opposite bracket 1. Like this at the flexible during operation of multiunit telescopic link 3, two flexible screw rods 32 in the telescopic link 3 of the same group can alternate segregation to push against two supports 1 and remove, realize the purpose of two supports 1 alternate segregation.

Optionally, a side surface of the bracket 1 connected to the telescopic screw 32 is provided with a limiting portion 16, the limiting portion 16 is provided with a limiting groove 160, and an end of the telescopic screw 32 is located in the limiting groove 160. Through set up spacing portion 16 on support 1 to set up spacing groove 160 in spacing portion 16, place telescopic screw 32 in spacing groove 160, just so make telescopic screw 32's application of force point stabilize on spacing portion 16, prevent that crooked condition from appearing in the flexible post of jack application of force process, improve the reliability.

Because slight deformation still appears in oil recovery, oil pipeline easily, therefore this kind of pipeline is demolising the clamp steel ring after, the problem of misalignment can appear in two adjacent pipelines, two pipelines promptly can't keep coaxial position relation because of warping, inconvenient new clamp steel ring of installing once more. The installation of the hoop steel ring can be carried out after the pipeline with small deformation is strongly corrected by external force, and the pipeline with large deformation is usually welded and cut by electrogas welding, so that the maintenance cost is increased.

Fig. 6 is a schematic structural diagram of a centralizer 4 according to an embodiment of the present disclosure. As shown in fig. 6, the dismounting device may further include a centralizer 4, the centralizer 4 includes a third half ring clamp 41, a fourth half ring clamp 42, a centralizing plate 43, a centralizing slider 44, and a locking mechanism, one end of the third half ring clamp 41 is hinged to one end of the fourth half ring clamp 42, the other end of the third half ring clamp 41 is operably connected to or disconnected from the other end of the fourth half ring clamp 42, the fourth half ring clamp 42 is connected to the centralizing plate 43, one end of the centralizing slider 44 penetrates through the fourth half ring clamp 42, the centralizing slider 44 is slidably disposed on the fourth half ring clamp 42, and the locking mechanism is configured to lock the centralizing slider 44 on the fourth half ring clamp 42.

In the above implementation manner, the centering slider 44 can freely slide on the fourth half-ring clamp 42, and one end of the centering slider 44 penetrates through the fourth half-ring clamp 42, so that when the centering slider 44 slides, the centering slider 44 can simultaneously abut against the two skewed pipelines and push the pipelines to closely adhere to the inner wall of the third half-ring clamp 41, thereby gradually returning the two skewed pipelines to the coaxial position.

As shown in fig. 6, the locking mechanism may include: the screw 22 and the transmission block 23, one end of the screw 22 can be installed on the righting slide block 44 in a rotating manner, the axial direction of the screw 22 is the same as the sliding direction of the righting slide block 44, the transmission block 23 is located on the righting plate 43, and the other end of the screw 22 penetrates through the transmission block 23 and is in threaded fit with the transmission block 23.

In the above implementation manner, the screw 22 penetrates through the transmission block 23 and is in threaded fit with the transmission block 23, and the transmission block 23 is located on the fourth half-ring clamp 42, so that when the screw 22 is rotated, the screw 22 will make linear motion relative to the transmission block 23, and since the other end of the screw 22 is rotatably installed on the centering slider 44, the screw 22 will not drive the centering slider 44 to rotate together in the rotating process, and the linear motion of the screw 22 will drive the centering slider 44 to make linear motion together, so as to adjust the position of the centering slider 44 on the fourth half-ring clamp 42. After stopping rotation, the centering slide 44 is prevented from sliding by itself by the locking action of the thread pair, so that the centering slide 44 is fixed on the fourth half ring 42.

In the above implementation manner, one end of the third half-ring clamp 41 and one end of the fourth half-ring clamp 42 are hinged to each other, so that when the third half-ring clamp 41 and the fourth half-ring clamp 42 are combined and connected, a round hole can be formed between the third half-ring clamp 41 and the fourth half-ring clamp 42 in a surrounding manner, and the round hole is used for sleeving two skewed pipelines. Thus, by controlling the first half ring clamp 11 and the second half ring clamp 12 to be separated from each other, two skewed pipelines can be placed into the two half ring clamps, and at this time, the two skewed pipelines are pushed by the centering slide block 44 to move towards the inner walls of the half ring clamps at the same time so as to be tightly attached to the inner walls of the half ring clamps, so that the two pipelines are restored to the coaxial position relation.

Fig. 7 is a schematic structural diagram of another centralizer 4 provided by the embodiment of the present disclosure. As shown in fig. 7, two first ear plates 13 are disposed on the third half ring clamp 41, the two first ear plates 13 are disposed in parallel and spaced, and the arrangement direction of the first ear plates 13 is parallel to the righting plate 43. The fourth half ring clamp 42 is provided with a second ear plate 14, and the second ear plate 14 is arranged in a direction parallel to the righting plate 43. When the third half-ring clamp 41 and the fourth half-ring clamp 42 are combined and connected, the second ear plate 14 can be embedded into a gap between the two first ear plates 13, and when the through holes of the three ear plates are coaxial, the third ear plate is inserted into the through holes of the three ear plates through the pin shaft 15 so as to avoid the separation of the three ear plates. In this way, the reliability of connection between the third half ring clip 41 and the fourth half ring clip 42 can be improved by interposing the second ear plate 14 between the two first ear plates 13.

When the dismounting device for the hoop steel ring provided by the embodiment of the disclosure is used for dismounting the hoop steel ring, firstly, the clip 51 in the pipeline is dismounted, and the first half ring clamp 11 and the second half ring clamp 12 are separated, so that the first half ring clamp 11 and the second half ring clamp 12 on the two brackets 1 are respectively clamped on the two pipelines. Then, the jack is controlled to jack the support 1, so that the two supports 1 are separated from each other, and the two adjacent pipelines are pulled apart by a certain distance. The steel ring 52 is then removed from the pipe. If the two adjacent pipelines are skewed and misaligned, the centralizer 4 is adopted, the third half ring clamp 41 and the fourth half ring clamp 42 of the centralizer 4 are sleeved at the connection position of the pipe orifices of the two adjacent pipelines, and the centralizing slide block 44 is controlled to push the two pipelines to be attached to the inner walls of the half ring clamps, so that the two pipelines are restored to the coaxial position. And then, replacing a new steel ring 52, controlling the telescopic columns of the jack to recover, installing the clip 51 on the steel ring 52, and finally detaching the detaching device of the hoop steel ring from the pipeline to finish the detaching and replacing operation of the hoop steel ring.

Although the present disclosure has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the disclosure.

Claims (10)

1. The utility model provides a dismounting device of clamp steel ring which characterized in that, dismounting device includes:

the device comprises two spaced brackets (1), wherein each bracket (1) is provided with a locking hole (10) for sleeving a pipeline, and the locking holes (10) on the two brackets (1) are coaxial;

a locking member (2) which is arranged on the bracket (1) in a manner of being capable of moving along the radial direction of the locking hole (10), and the locking member (2) can move into the locking hole (10) at least partially;

the telescopic rod (3) is located between the two supports (1), one end of the telescopic rod (3) is connected with one support (1), and the other end of the telescopic rod (3) is connected with the other support (1).

2. Dismounting device according to claim 1, characterized in that said blocking member (2) comprises: the locking mechanism is connected with the locking sliding block (21) so as to adjust the length of the locking sliding block (21) extending into the locking hole (10) and lock the locking sliding block (21).

3. The detachment apparatus of claim 2, wherein the locking mechanism includes: the screw rod (22) penetrates through the transmission block (23) and is in threaded fit with the transmission block (23), one end of the screw rod (22) can be installed on the locking sliding block (21) in a rotating mode, and the transmission block (23) is located on the support (1).

4. The dismounting device according to claim 3, wherein the locking member (2) further comprises a baffle plate (24), the baffle plate (24) is provided with a mounting through hole (27), the locking slider (21) is provided with a mounting groove (25) for inserting the screw rod (22), the baffle plate (24) is mounted on the locking slider (21) and is positioned at the mounting groove (25), the screw rod (22) is positioned in the mounting through hole (27), one end of the screw rod (22) is provided with an outer flange (26), the outer diameter of the outer flange (26) is larger than the inner diameter of the mounting through hole (27), and one end of the screw rod (22) provided with the outer flange (26) is inserted in the mounting groove (25).

5. The dismounting device according to claim 1, characterized in that the bracket (1) comprises a first half ring clamp (11) and a second half ring clamp (12), one end of the first half ring clamp (11) is hinged with one end of the second half ring clamp (12), the other end of the first half ring clamp (11) is detachably connected with the other end of the second half ring clamp (12), and the locking hole (10) is formed when the first half ring clamp (11) and the second half ring clamp (12) are connected.

6. Dismounting device according to claim 5, characterized in that the other end of said first semi-ring clamp (11) is provided with a first ear plate (13), the other end of said second semi-ring clamp (12) is provided with a second ear plate (14), and when said first semi-ring clamp (11) and said second semi-ring clamp (12) are connected, said first ear plate (13) and said second ear plate (14) are connected by a pin (15).

7. Dismounting device according to any one of claims 1 to 6, characterized in that the telescopic rod (3) is a jack.

8. The dismounting device according to claim 7, characterized in that a limiting part (16) is arranged on one side surface of the bracket (1) connected with the telescopic column of the jack, a limiting groove (160) is arranged on the limiting part (16), and the end part of the telescopic column of the jack is positioned in the limiting groove (160).

9. The dismounting device according to any one of claims 1 to 6, characterized in that the telescopic rod (3) comprises a telescopic sleeve (31) and two telescopic screws (32), the thread directions of the two telescopic screws (32) are opposite, two ends of the telescopic sleeve (31) are respectively in threaded connection with one ends of the two telescopic screws (32), and the other ends of the two telescopic screws (32) are respectively connected with the two brackets (1).

10. Dismounting device according to any one of claims 1 to 6, characterized in that there are two of said telescopic rods, both of said telescopic rods being arranged symmetrically with respect to said locking hole (10).

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