CN220365536U - Slips unclamping device and pressurized operation machine - Google Patents

Abstract

The application relates to a slips unclamping device and area presses workover rig, slips unclamping device includes base, supporting seat and supporting shoe: the base is positioned on one surface of the hydraulic turntable, which faces the traveling bearing slips, and is provided with a first through hole for the pipe column to pass through; the support seat is provided with a second through hole for the pipe column to pass through, and comprises a support plate, wherein the support plate is positioned on one surface of the traveling bearing slip, which faces the hydraulic turntable; the supporting block is arranged between the base and the supporting seat, and the supporting block is arranged on the periphery of the pipe column. The slip unclamping device is located between the hydraulic turntable and the traveling bearing slips, when the traveling slip set is blocked, an operator can knock the supporting block outside the slip unclamping device by using the knocking hammer, so that the supporting block is separated from the supporting plate and the base, the supporting plate moves towards the base under the retraction force of the pipe column, the retraction force of the pipe column is released, the slip is prevented from being blocked, and the traveling bearing slips and the traveling pressing slips can be normally detached.

Description

Slips unclamping device and pressurized operation machine

Technical Field

The application relates to the field of petroleum equipment, in particular to a slip unclamping device and a pressurized working machine.

Background

The lifting and pressing system of the pressurized working machine mainly comprises a hydraulic lifting machine, a traveling slip group, a fixed slip group and the like, wherein the fixed slip group is fixed inside the hydraulic lifting machine, and the traveling slip group is fixed on a connecting plate of a hydraulic cylinder piston rod of the lifting machine. The traveling slip group and the fixed slip group respectively comprise a bearing slip and a pressing slip, wherein the bearing slip and the pressing slip are a group of slips with opposite installation directions, and the bearing slip can bear downward load of a tubular column after being closed; the downward pressure slips can bear the upward load of the pipe column after being closed.

The hydraulic turntable is arranged on the upper plane of the connecting plate of the lifting machine, the hydraulic turntable utilizes a hydraulic pump station to provide a power source, the traveling bearing slips are arranged on the upper plane of the hydraulic turntable, and the traveling pressing slips are arranged on the lower plane of the connecting plate. The traveling slips fix the pipe column, and the pipe column is driven to rotate by the hydraulic turntable, so that the traveling slips can be used for drilling plugs or drilling and milling operations.

The slip set mainly comprises a slip seat, a slip body, a slip tooth plate and a slip hydraulic cylinder, wherein the slip tooth plate is of a slope-shaped tooth type structure, and under the action of the slip hydraulic cylinder, the slip body drives the slip tooth plate to be located in the slip seat, so that the tooth die is attached to the outer wall of the pipe column. If the pipe column bears a load, the slip seat tends to drive the slip plate to move inwards, and the slip plate can tightly bite the outer wall of the pipe column to bear the load; if the pipe column bears opposite load, the movement trend of the slip socket is that the slip plate is driven to move away from the slip socket, the slip plate can be loosened relatively, and only slightly attached to the outer wall of the pipe column, and the load is not borne.

Simultaneously closing the traveling bearing slips and the traveling pressing slips, and if the pipe column bears downward external load at the moment, the upper traveling bearing slips can tightly clamp the pipe column to bear the external load; the movable downward-pressing slip tooth plate is only slightly attached to the outer surface of the pipe column and does not bear external load, and the whole pipe column below the movable bearing slip is in a stretching state under the action of the external load.

After the fixed slip group is closed and the external load of the pipe column is transferred from the traveling slip group to the fixed slip group, the oil pipe at the upper part of the fixed slip group is not subjected to downward load, and the pipe column starts to retract under the action of internal stress. Under the action of the internal shrinkage force of the pipe column, the upper pipe column also drives the tooth plate of the traveling slips to move towards the slip seat, so that the traveling bearing slips and the traveling pressing slips bear the retraction force of the oil pipe at the same time, and the force of the wedge-shaped contact surface of the slip body and the slip seat cannot be released, so that the slips are locked and cannot be opened in a conventional mode.

Disclosure of Invention

An object of the application is to provide a slips unclamping device and area press operation machine, slips unclamping device is located between hydraulic turntable and the bearing slips that move about, and when the slip group card of moving about was dead, the supporting shoe breaks away from between backup pad and the base, and the backup pad moves towards the base under the retractive force of tubular column for the retractive force of tubular column obtains releasing, avoids the slips lock to die, and then can normally dismantle the bearing slips that moves about and move about and push down the slips.

To this end, in a first aspect, an embodiment of the present application provides a slip unlocking device, including: the base is positioned on one surface of the hydraulic turntable, which faces the traveling bearing slips, and is provided with a first through hole for a pipe column to pass through; the support seat is provided with a second through hole for the pipe column to pass through, and comprises a support plate, wherein the support plate is positioned on one surface of the traveling bearing slip, which faces the hydraulic turntable; the support block is arranged between the base and the support seat, and the support block is arranged on the periphery of the pipe column.

In one possible implementation manner, the supporting seat further comprises an isolating cylinder, one end of the isolating cylinder is connected with one surface of the supporting plate, which faces the base, and the isolating cylinder is connected with the base in a sliding manner so that the isolating cylinder moves towards the base.

In one possible implementation, the device further comprises a connection assembly for connecting the base, the support base and the support block.

In one possible implementation, the connection assembly includes a connection member including a main body portion and an abutment portion, the main body portion passing through the base, the support block and being connected with the support base, and a spacer located between the abutment portion and the base.

In one possible implementation, the support block is provided with a connecting slot adapted to the connecting piece, the opening of the connecting slot facing away from the isolation cylinder.

In one possible implementation manner, one surface of the supporting block facing the isolation cylinder is provided with an arc surface and is attached to the isolation cylinder.

In one possible implementation, the base includes: the first bottom plate is provided with a mounting hole for connecting with the connecting piece; the second bottom plate is connected with the hydraulic turntable and is arranged at intervals with the first bottom plate; one end of the supporting cylinder is connected with the first bottom plate, the other end of the supporting cylinder is connected with the second bottom plate, and the first bottom plate and the second bottom plate extend out of the periphery of the supporting cylinder.

In one possible embodiment, the second base plate is provided with a mounting recess on its peripheral side for yielding the connecting piece.

In one possible implementation manner, the supporting blocks and the connecting pieces are all provided with a plurality of connecting pieces and are distributed at intervals along the periphery of the isolation cylinder.

In a second aspect, an embodiment of the present application provides a pressurized working machine, which includes a slip unlocking device as described in any one of the foregoing embodiments.

According to slips unclamping device and area pressure workover rig that this application embodiment provided, slips unclamping device includes base, supporting seat and supporting shoe: the base is positioned on one surface of the hydraulic turntable, which faces the traveling bearing slips, and is provided with a first through hole for the pipe column to pass through; the support seat is provided with a second through hole for the pipe column to pass through, and comprises a support plate, wherein the support plate is positioned on one surface of the traveling bearing slip, which faces the hydraulic turntable; the supporting block is arranged between the base and the supporting seat, and the supporting block is arranged on the periphery of the pipe column. The slip unclamping device is located between the hydraulic turntable and the traveling bearing slips, when the traveling slip set is blocked, an operator can knock the supporting block outside the slip unclamping device by using the knocking hammer, so that the supporting block is separated from the supporting plate and the base, the supporting plate moves towards the base under the retraction force of the pipe column, the retraction force of the pipe column is released, the slip is prevented from being blocked, and the traveling bearing slips and the traveling pressing slips can be normally detached.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model.

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort.

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to be taken in a limiting sense, unless otherwise indicated.

Fig. 1 shows a partial schematic view of a pressurized working machine provided in an embodiment of the present application;

FIG. 2 illustrates a front view of a slip unclamping device provided in an embodiment of the present application;

FIG. 3 shows an exploded view of a slip unclamping device provided in an embodiment of the present application;

fig. 4 is a schematic structural diagram of a first unlocking step of a slip unlocking device according to an embodiment of the present application;

fig. 5 shows a schematic structural diagram of a second unlocking step of the slip unlocking device according to the embodiment of the present application;

fig. 6 shows a schematic structural diagram of a third unlocking step of the slip unlocking device according to an embodiment of the present application.

Reference numerals illustrate:

1. a base; 11. A first through hole; 12. A first base plate; 121. A mounting hole; 13. A second base plate; 131. A mounting notch; 14. A support cylinder; 2. a support base; 21. a second through hole; 22. a support plate; 23. an isolation cylinder; 3. a support block; 31. a connecting groove; 4. a hydraulic turntable; 5. a swimming load-bearing slip; 6. a connection assembly; 61. a connecting piece; 611. a main body portion; 612. an abutting portion; 62. a gasket.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present application based on the embodiments herein.

The following disclosure provides many different embodiments, or examples, for implementing different structures of the utility model. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the utility model. Furthermore, the present utility model may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.

For ease of description, spatially relative terms, such as "inner," "outer," "lower," "upper," "above," "front," "rear," and the like, may be used herein to describe one element's or feature's relative positional relationship or movement to another element's or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figure experiences a position flip or a change in attitude or a change in state of motion, then the indications of these directivities correspondingly change, for example: an element described as "under" or "beneath" another element or feature would then be oriented "over" or "above" the other element or feature. Thus, the example term "below … …" may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used herein interpreted accordingly.

As shown in fig. 1 to 3, fig. 1 is a schematic partial view of a pressurized working machine provided in an embodiment of the present application, fig. 2 is a front view of a slip unlocking device provided in an embodiment of the present application, and fig. 3 is an exploded view of a slip unlocking device provided in an embodiment of the present application.

The embodiment of the application provides a slip unclamping device, which comprises a base 1, a supporting seat 2 and a supporting block 3, wherein the base 1 is positioned on one surface of a hydraulic turntable 4, which faces to a traveling bearing slip 5, and the base 1 is provided with a first through hole 11 for a pipe column to pass through; the support seat 2 is provided with a second through hole 21 for a pipe column to pass through, the support seat 2 comprises a support plate 22, and the support plate 22 is positioned on one surface of the traveling bearing slip 5 facing the hydraulic turntable 4; the supporting block 3 is arranged between the base 1 and the supporting seat 2, and the supporting block 3 is positioned on the periphery of the pipe column.

When needs understand, base 1, supporting seat 2 and supporting shoe 3 are the stereoplasm material, for example stainless steel or other materials, and this application does not do not prescribe a limit to the thickness of base 1, supporting seat 2 and supporting shoe 3, and specific thickness sets up according to the scene operating mode, but base 1, supporting seat 2 and supporting shoe 3 can not take place visible deformation because of the atress at the during operation.

Wherein, the base 1 is positioned on one surface of the hydraulic turntable 4 facing the traveling bearing slips 5, namely, is positioned above the hydraulic turntable 4; the base 1 is sleeved with a pipe column, i.e. the pipe column is positioned in the first through hole 11 of the base 1. The base 1 is detachably connected to the hydraulic turntable 4, for example by means of a screw connection, and a mounting groove adapted to the base 1 can also be provided at the hydraulic turntable 4, the base 1 not being movable relative to the hydraulic turntable 4 when the base 1 is in the mounting groove. The cross section of the base 1 may be circular, square or other shapes, which is not limited in this application, and in one example, the cross section of the base 1 is circular, so as to avoid damage to an operator during installation.

The supporting seat 2 is positioned at one end of the traveling bearing slip 5 facing the hydraulic turntable 4, namely, the supporting seat 2 is positioned below the traveling bearing slip 5, and the supporting seat 2 is sleeved with a pipe column, namely, the pipe column is positioned in a second through hole 21 of the supporting seat 2. The support base 2 includes a support plate 22, and the support plate 22 may be circular, square or other shapes, and is not limited in this application, in one example, the support plate 22 is circular, so as to avoid damage to an operator during installation.

The backup pad 22 sets up with base 1 interval, and supporting shoe 3 is located between supporting seat 2 and the base 1, and the upper end and the supporting seat 2 butt of supporting shoe 3 promptly, and the lower extreme and the base 1 butt of supporting shoe 3, and supporting shoe 3 sets up in the week side of tubular column.

When the hydraulic rotary table is in operation, the slip unclamping device is positioned between the traveling bearing slips 5 and the hydraulic rotary table 4, and when the traveling slip group is closed, the fixed slip group is closed, so that after the external load of the pipe column is transferred from the traveling slip group to the fixed slip group, the oil pipe on the upper part of the fixed slip group is not subjected to downward load, and the pipe column starts to retract under the action of internal stress. Under the action of the internal shrinkage force of the pipe column, the upper pipe column also drives the tooth plate of the traveling slips to move towards the slip seat, so that the traveling bearing slips 5 and the traveling downward-pressing slips bear the retraction force of an oil pipe at the same time, and the force of the wedge-shaped contact surface of the slip body and the slip seat cannot be released, so that the slips are locked.

When the traveling slip group is stuck, an operator can knock the supporting block 3 on the outer side of the slip releasing device by using the knocking hammer, so that the supporting block 3 is separated from the supporting plate 22 and the base 1, after the supporting block 3 is separated, the supporting plate 22 moves towards the base 1 under the retractive force of the pipe column, the retractive force of the pipe column is released, the slip is prevented from being locked, and the traveling bearing slip 5 and the traveling pressing slip can be normally detached.

Referring to fig. 2 and 3, in some alternative embodiments, the support base 2 further includes a spacer tube 23, one end of the spacer tube 23 is connected to a side of the support plate 22 facing the base 1, and the spacer tube 23 is slidably connected to the base 1 so as to move the spacer tube 23 toward the base 1.

The isolation cylinder 23 and the support plate 22 are the same in material, the isolation cylinder 23 and the support plate 22 are integrally formed, after installation, the pipe column is located in the inner cavity of the isolation cylinder 23, the isolation cylinder 23 is slidably connected with the base 1, in one example, the isolation cylinder 23 is sleeved on the base 1, when the support block 3 is separated from the support plate 22 and the base 1, the support plate 22 and the isolation cylinder 23 move towards the base 1, and the isolation cylinder 23 extends into the first through hole 11 of the base 1. The setting of the isolation cylinder 23 avoids the supporting shoe 3 to contact with the outer surface of the pipe column, and avoids the supporting shoe 3 to damage the pipe column when knocking the supporting shoe 3 so as to protect the pipe column.

In some alternative embodiments, the device further comprises a connecting assembly 6, wherein the connecting assembly 6 is used for connecting the base 1, the support base 2 and the support block 3. The connection assembly 6 may comprise a pin, bolt or the like. During normal operation, the connecting component 6 connects the base 1, the supporting seat 2 and the supporting block 3, so that the supporting block 3 is prevented from falling off from the base 1 and the supporting seat 2, and when the card is released, the connecting component 6 is detached, so that the supporting block 3 is not connected with the base 1 and the supporting seat 2, and an operator can conveniently break away the supporting block 3 from the base 1 and the supporting seat 2 through the knocking hammer, so that the card is released.

In some alternative embodiments, the connection assembly 6 includes a connection member 61 and a spacer 62, the connection member 61 includes a main body portion 611 and an abutment portion 612, the main body portion 611 passes through the base 1, the support block 3 and is connected with the support base 2, and the spacer 62 is located between the abutment portion 612 and the base 1.

The connector 61 includes a main body portion 611 and an abutment portion 612, the main body portion 611 and the abutment portion 612 are made of the same material, the main body portion 611 and the abutment portion 612 are integrally formed, the main body portion 611 and the abutment portion 612 are cylindrical, the diameter of the abutment portion 612 is larger than that of the main body portion 611, the outer surface of the main body portion 611 is provided with threads, the base 1 is provided with a mounting hole through which the main body portion 611 passes, the support block 3 is also provided with a groove portion or a hole portion through which the main body portion 611 passes, and the support plate 22 is provided with a threaded hole connected with the main body portion 611.

In the mounting, the main body 611 is extended from the mounting hole of the base 1 away from the abutting portion 612, then passes through the groove portion or the hole portion of the support block 3, and finally is connected to the screw hole at the support plate 22, thereby connecting the support base 2, the base 1, and the support block 3.

The gaskets 62 are located between the abutting portion 612 and the base 1, wherein the number of the gaskets 62 may be one or two, the two gaskets 62 are stacked along the length direction of the main body portion 611, and the arrangement of the gaskets 62 further improves the stability of connection between the connecting piece 61 and the base 1, the supporting seat 2 and the supporting block 3, and avoids the connecting piece 61 from being separated from the base 1, the supporting seat 2 and the supporting block 3.

In some alternative embodiments, the support block 3 is provided with a connection slot 31 adapted to the connection piece 61, the opening of the connection slot 31 facing away from the isolation cylinder 23. When the connecting piece 61 is detached, the connecting piece 61 is more conveniently separated from the supporting block 3 compared with the arrangement of the holes by the arrangement of the connecting grooves 31.

In some alternative embodiments, the surface of the supporting block 3 facing the isolating cylinder 23 is provided with an arc surface and is attached to the isolating cylinder 23. During installation, the supporting block 3 is attached to the isolation cylinder 23, so that the contact area of the supporting block 3 and the isolation cylinder 23 is increased, and the stability of the supporting block 3 installed between the base 1 and the supporting plate 22 is improved.

In some alternative embodiments, the base 1 comprises a first bottom plate 12, a second bottom plate 13 and a support cylinder 14, the first bottom plate 12 being provided with mounting holes 121 for connection with the connection piece 61; the second bottom plate 13 is connected with the hydraulic turntable 4, and the second bottom plate 13 is arranged at intervals with the first bottom plate 12; the support cylinder 14 has one end connected to the first bottom plate 12 and the other end connected to the second bottom plate 13, and the first bottom plate 12 and the second bottom plate 13 extend beyond the peripheral side of the support cylinder 14.

The first bottom plate 12, the second bottom plate 13 and the supporting cylinder 14 are made of the same material, and the first bottom plate 12, the second bottom plate 13 and the supporting cylinder 14 are integrally formed. The first bottom plate 12 is provided with mounting holes 121, and the connecting pieces 61 extend into the mounting holes 121 and are connected with the supporting blocks 3 and the supporting plates 22, and the mounting holes 121 are located on the peripheral side of the first bottom plate 12 extending out of the supporting cylinder 14, so that the mounting and dismounting of the connecting pieces 61 are not affected. The first bottom plate 12 and the second bottom plate 13 are arranged at intervals, so that a space is reserved for installing and detaching the connecting piece 61, the installation and the detachment of the connecting piece 61 are not affected, and the separation of the supporting block 3 from the supporting seat 2 and the base 1 is not affected.

In some alternative embodiments, the peripheral side of the second bottom plate 13 is provided with mounting notches 131 that give way to the connectors 61. The supporting cylinder 14 also extends from the peripheral side of the second bottom plate 13, the mounting notch 131 is located on the peripheral side of the second bottom plate 13, and the mounting notch 131 corresponds to the mounting hole 121 of the first bottom plate 12, and when the connecting piece 61 is detached or mounted, the abutting portion 612 of the connecting piece 61 can be placed at the mounting notch 131, so that the connecting piece 61 can be mounted and dismounted conveniently.

In some alternative embodiments, the support blocks 3 and the connection pieces 61 are each provided in plurality and arranged at intervals along the circumferential side of the isolation cylinder 23. The arrangement of the plurality of support blocks 3 and the connection member 61 on the premise of the same size can withstand a higher retraction force with respect to one support block 3 when the string is retracted. With different sizes, a larger support block 3 is more convenient for an operator to disengage the support block 3 from between the base 1 and the support base 2 than a plurality of smaller support blocks 3.

Referring to fig. 1, the present application further includes a pressurized work machine including a slip unclamping device as described in any of the preceding claims. The pressurized working machine further comprises a traveling slip assembly and a hydraulic turntable 4, wherein the traveling slip assembly comprises a traveling bearing slip 5, and a slip unclamping device is positioned between the traveling bearing slip 5 and the hydraulic turntable 4.

The slip unclamping device comprises a base 1, a supporting seat 2 and a supporting block 3, wherein the base 1 is positioned on one surface of a hydraulic turntable 4 facing to a traveling bearing slip 5; the support seat 2 comprises a support plate 22, and the support plate 22 is positioned on one surface of the traveling bearing slips 5 facing the hydraulic turntable 4; the supporting block 3 is arranged between the base 1 and the supporting block 3.

When the traveling slip group is stuck, an operator can knock the supporting block 3 on the outer side of the slip releasing device by using the knocking hammer, so that the supporting block 3 is separated from the supporting plate 22 and the base 1, after the supporting block 3 is separated, the supporting plate 22 moves towards the base 1 under the retractive force of the pipe column, the retractive force of the pipe column is released, the slip is prevented from being locked, and the traveling bearing slip 5 and the traveling pressing slip can be normally detached.

Referring to fig. 4 to fig. 6, fig. 4 shows a schematic structural diagram of a first unlocking step of a slip unlocking device provided in an embodiment of the present application, fig. 5 shows a schematic structural diagram of a second unlocking step of the slip unlocking device provided in an embodiment of the present application, and fig. 6 shows a schematic structural diagram of a third unlocking step of the slip unlocking device provided in an embodiment of the present application. The technical scheme provided by the embodiment is described below in connection with a specific application scenario.

When the traveling slip group is blocked, an operator performs unlocking, and the unlocking steps are as follows:

step one, the connecting piece 61 is detached from the supporting seat 2, the base 1 and the supporting block 3;

step two, knocking the supporting block 3 outside the slip unclamping device by using a knocking hammer, so that the supporting block 3 is separated from the supporting plate 22 and the base 1;

and thirdly, after the supporting block 3 is separated, the supporting plate 22 moves towards the base 1 under the retraction force of the pipe column, so that the retraction force of the pipe column is released, slip releasing is completed, and the traveling bearing slip 5 and the traveling pushing slip can be normally disassembled.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless an order of performance is explicitly stated. It should also be appreciated that additional or alternative steps may be used.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

The foregoing is only a specific embodiment of the utility model to enable those skilled in the art to understand or practice the utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A slip unclamping device, comprising:

the base is positioned on one surface of the hydraulic turntable, which faces the traveling bearing slips, and is provided with a first through hole for a pipe column to pass through;

the support seat is provided with a second through hole for the pipe column to pass through, and comprises a support plate, wherein the support plate is positioned on one surface of the traveling bearing slip, which faces the hydraulic turntable;

the support block is arranged between the base and the support seat, and the support block is arranged on the periphery of the pipe column.

2. The slip unclamping device of claim 1, wherein the support base further comprises an isolation cylinder, one end of the isolation cylinder is connected with a face of the support plate facing the base, and the isolation cylinder is slidably connected with the base so as to enable the isolation cylinder to move toward the base.

3. The slip unclamping device of claim 2, further comprising a connection assembly for connecting the base, the support seat and the support block.

4. The slip unclamping device of claim 3, wherein the connection assembly comprises a connection member and a spacer, the connection member comprising a body portion and an abutment portion, the body portion passing through the base, the support block and being connected to the support seat, the spacer being located between the abutment portion and the base.

5. The slip unclamping device according to claim 4, wherein the support block is provided with a connection groove adapted to the connection piece, an opening of the connection groove facing away from the isolation cylinder.

6. The slip unclamping device according to claim 2, wherein one surface of the supporting block facing the isolation cylinder is in an arc surface and is attached to the isolation cylinder.

7. The slip unclamping device of claim 4, wherein the base comprises:

the first bottom plate is provided with a mounting hole for connecting with the connecting piece;

the second bottom plate is connected with the hydraulic turntable and is arranged at intervals with the first bottom plate;

one end of the supporting cylinder is connected with the first bottom plate, the other end of the supporting cylinder is connected with the second bottom plate, and the first bottom plate and the second bottom plate extend out of the periphery of the supporting cylinder.

8. The slip unclamping device of claim 7, wherein a peripheral side of the second base plate is provided with a mounting notch for yielding the connector.

9. The slip unclamping device of claim 4, wherein the support blocks and the connecting members are each provided in plurality and are arranged at intervals along the peripheral side of the isolation cylinder.

10. A pressurized working machine comprising a slip unclamping device according to any one of claims 1 to 9.