CN210422495U - Cement head clamp type quick coupler - Google Patents

Abstract

The utility model provides a cement head clamp type quick coupler, which relates to the technical field of petroleum auxiliary components and comprises a clamp component and an adjusting sleeve; a sealing gasket assembly is arranged inside the hoop assembly; a locking support assembly is arranged in the adjusting sleeve and comprises a positioning ring, a plurality of supporting clamping blocks and a sliding part; the supporting fixture blocks are used for enclosing into a ring shape which is abutted against the outer wall of the sleeve. The utility model provides a cement head clamp formula ready-packaged joint utilizes the locking supporting component of the sealing pad subassembly on the clamp subassembly and adjusting collar lower part to realize respectively the tight butt at both ends about the antithetical couplet top coupling, the top of having realized supporting the fixture block to terminal surface under the antithetical couplet top coupling on the one hand of the combination of support fixture block and slider is tight, can also enclose simultaneously and fit the sleeve pipe periphery, guarantee to support the tightness that the fixture block connects sleeve pipe and antithetical couplet top coupling, this joint does not receive the sleeve pipe and the influence of the specification of antithetical couplet top coupling and knot type, good suitability has.

Description

Cement head clamp type quick coupler

Technical Field

The utility model belongs to the technical field of the oil auxiliary member, more specifically say, relate to a cement head clamp formula ready-packaged joint.

Background

At present, a well cementation cement head is generally connected with a connection hoop female thread at the upper end of a casing string through a male thread at the lower end of a cement head body or the casing joint, and threads of different buckling types need to be matched with different casing joints. With the appearance of more and more special well conditions such as shale gas, coal bed gas and the like, a special gas sealing buckle casing is generally used, and the clamp type cement head has certain universality, so that the problems of numerous casing buckle types are solved to a certain extent. However, the currently used clamp type quick coupler is not suitable for a non-standard-size coupling, so that the application range of the clamp type quick coupler is greatly limited, and in addition, the clamp type quick coupler also has the problems of single sealing type and unreliable sealing in a high-pressure working environment.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a cement head clamp formula ready-packaged joint to there is clamp formula to connect the not tight technical problem of sealed under the suitability is poor, the high pressure environment among the solution prior art.

In order to achieve the above object, the utility model adopts the following technical scheme: the clamp type quick coupler for the cement head comprises a clamp component and an adjusting sleeve, wherein the clamp component is sleeved on the periphery of a joint hoop of a joint top, and the adjusting sleeve is in threaded connection with the periphery of the lower end of the clamp component; the upper end of the hoop component is used for being connected with a cement head, and a sealing gasket component used for being abutted against the top surface of the abutting joint hoop is arranged in the hoop component; a locking support assembly used for being abutted against the top surface of the abutting hoop is arranged in the adjusting sleeve and comprises a positioning ring arranged on the inner side of the adjusting sleeve, a plurality of supporting clamping blocks positioned below the positioning ring and a sliding piece arranged between the supporting clamping blocks and the inner wall of the adjusting sleeve; the supporting fixture blocks are used for enclosing into a ring shape which is abutted against the outer wall of the sleeve, and the top surfaces of the supporting fixture blocks are abutted against the bottom surface of the abutting hoop; the sliding part is used for downwards moving to drive the supporting fixture block to be folded towards the axis of the adjusting sleeve; the bottom of adjusting collar is equipped with the first end plate with the bottom surface butt of supporting the fixture block.

As another embodiment of the application, the outer side surface of the supporting fixture block is arranged in a downward inclination manner, and the sliding part comprises a pushing ring, the lower part of which is provided with an inclined surface for sliding connection with the outer side surface of the supporting fixture block; the eccentric rotating shaft is arranged on the adjusting sleeve and used for driving the pushing ring to move up and down, and the handle is arranged at the outer end of the eccentric rotating shaft.

As another embodiment of the present application, the eccentric rotating shaft includes a main shaft body disposed perpendicular to the main shaft of the adjusting sleeve and rotatably connected to the adjusting sleeve, an inner shaft disposed inside the main shaft body and parallel to the main shaft of the main shaft body for being inserted into and fitted with the supporting fixture block, and an outer shaft disposed outside the main shaft body, and the handle is connected to the outer shaft.

As another embodiment of the application, the inner sides of the plurality of supporting clamping blocks are further provided with annular elastic clamping rings used for being abutted against the inner walls of the supporting clamping blocks.

As another embodiment of the application, two annular elastic clamping rings are arranged in parallel in the axial direction of the supporting clamping block.

As another embodiment of this application, the clamp subassembly includes the clamp body that the upper end links to each other with the cementing head and threaded connection in the adapter sleeve of clamp body periphery, and the lower extreme of adapter sleeve is equipped with the second end plate.

As another embodiment of this application, the lower extreme of clamp body is equipped with the step hole, and sealed the packing assembly including set up in the downthehole support ring of step and the sealed packing of locating the support ring lower extreme periphery, the support ring includes big footpath end and is located big footpath end lower part and the external diameter and is less than the path end, and sealed packing cover is located path end and lower terminal surface and is linked the top surface butt that connects the hoop.

As another embodiment of the application, the periphery of the large-diameter end is provided with a sealing ring, and the periphery of the sealing gasket is provided with a sealing gasket retaining ring.

As another embodiment of this application, still be equipped with first seal assembly between the outer wall of clamp is connected on the clamp subassembly and antithetical couplet, first seal assembly is including setting up the rubber protection cover in the connecting sleeve, being located the briquetting between rubber protection cover and the second end plate and set up in rubber protection cover and briquetting inboard and be used for the sealed pad of annular with the outer wall butt of antithetical couplet top connection hoop.

As another embodiment of this application, be equipped with first top tight screw between the adapter sleeve of clamp body periphery and the adapter sleeve, adapter sleeve and adjusting collar are equipped with the second top tight screw between with.

The utility model provides a cement head clamp formula ready-packaged joint's beneficial effect lies in: the utility model provides a pair of cement head clamp formula ready-packaged joint, compared with the prior art, the utility model provides a cement head clamp formula ready-packaged joint utilizes the tight butt at both ends about the joint hoop is realized respectively to the locking supporting component of seal pad subassembly and adjusting collar lower part on the clamp subassembly, the top of terminal surface under the support fixture block is to the joint hoop has been realized on the one hand to the combination of support fixture block and slider tightly, can also enclose synthetic and the tight complex annular member of sleeve pipe outer wall simultaneously, realize holding tightly the sleeve pipe periphery, and then guarantee to support the tightness that the fixture block is connected to sleeve pipe and joint hoop, this joint does not receive the influence of the specification of sleeve pipe and joint hoop and knot type, has good suitability.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic view of a partial cross-sectional structure of a cement head clamp type quick coupler according to an embodiment of the present invention;

fig. 2 is a schematic view of a partial cross-sectional structure of a usage state of a clamp type quick coupler of a cementing head provided by an embodiment of the present invention;

FIG. 3 is a schematic sectional view of I in FIG. 1;

FIG. 4 is a schematic cross-sectional view of II in FIG. 2;

fig. 5 is a schematic top cross-sectional view illustrating the supporting fixture block and the sleeve in fig. 4.

Wherein, in the figures, the respective reference numerals:

100. a clamp assembly; 110. a clamp body; 111. a support ring; 112. a gasket; 113. a large diameter end; 114. a small diameter end; 115. a seal ring; 116. a gasket retainer ring; 117. a first jacking screw; 118. a second jacking screw; 119. a third jacking screw; 120. connecting sleeves; 121. a second end plate; 130. a first seal assembly; 131. a rubber protective sleeve; 132. briquetting; 133. an annular seal; 134. an O-shaped sealing ring; 200. an adjusting sleeve; 210. a first end plate; 300. locking the support assembly; 310. a positioning ring; 320. supporting the clamping block; 321. an elastic collar; 400. a slider; 410. a push ring; 420. an eccentric rotating shaft; 421. a main shaft body; 422. an inner shaft; 423. an outer shaft; 430. a handle; 440. a retainer ring; 610. a landing collar; 620. a sleeve.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 to 5, a clamp type quick coupler for a cementing head according to the present invention will now be described. The cement head clamp type quick coupler comprises a clamp assembly 100 and an adjusting sleeve 200, wherein the clamp assembly 100 is sleeved on the periphery of a connection hoop 610, and the adjusting sleeve 200 is in threaded connection with the periphery of the lower end of the clamp assembly 100; the upper end of the hoop component 100 is used for connecting with a cementing head, and a sealing gasket component used for being abutted against the top surface of the abutting hoop 610 is arranged in the hoop component; the inside of the adjusting sleeve 200 is provided with a locking support assembly 300 for abutting against the top surface of the abutting hoop 610, the locking support assembly 300 comprises a positioning ring 310 arranged on the inner side of the adjusting sleeve 200, a plurality of supporting fixture blocks 320 positioned below the positioning ring 310, and a sliding member 400 arranged between the supporting fixture blocks 320 and the inner wall of the adjusting sleeve 200; the supporting fixture blocks 320 are used for enclosing into a ring shape which is abutted with the outer wall of the sleeve 620, and the top surfaces of the supporting fixture blocks 320 are abutted with the bottom surface of the abutting hoop 610; the sliding part 400 is used for driving the supporting fixture block 320 to move downwards to be folded towards the axis of the adjusting sleeve 200; the bottom of the adjusting sleeve 200 is provided with a first end plate 210 abutting against the bottom surface of the supporting latch 320. It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or be indirectly on the other element. It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the invention. The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

The utility model provides a pair of cement head clamp formula ready-packaged joint, compared with the prior art, the utility model provides a cement head clamp formula ready-packaged joint, utilize the locking supporting component 300 of the sealing pad subassembly on the clamp subassembly 100 and the adjusting collar 200 lower part to realize respectively the tight butt at both ends about antithetical couplet top coupling 610, support fixture block 320 and slider 400 combination has realized on the one hand that support fixture block 320 is tight to the top of joining in marriage terminal surface under the top coupling 610, can also enclose synthetic and the tight complex annular member of sleeve pipe 620 outer wall simultaneously, realize the enclasping to the sleeve pipe 620 periphery, and then guarantee the tightness that support fixture block 320 is connected sleeve pipe 620 and antithetical couplet top coupling 610, this joint does not receive sleeve pipe 620 and the influence of the specification and the knot type of antithetical couplet top coupling 610, good suitability has.

The cementing head clamp type quick coupler in the embodiment is used for connecting a cementing head above and a casing 620 below, a connecting top hoop 610 is connected above the casing 620, and the upper ends of the connecting top hoop 610 and the casing 620 are both located inside the cementing head clamp type quick coupler in the connecting process. Adopt the screw thread to connect between clamp subassembly 100 and the adjusting collar 200, set up the gasket subassembly that is used for with the top surface butt of antithetical couplet top coupling 610 on the inner wall of clamp subassembly 100, and locking supporting component 300 that the adjusting collar 200 lower part set up then can make and form inseparable sealed between the inner wall of adjusting collar 200 and the outer wall of sleeve pipe 620, realizes the secondary seal to antithetical couplet top coupling 610 terminal surface and periphery, guarantees the leakproofness of being connected between sleeve pipe 620 and the cement head. The adjustable form of adjusting collar 200 and clamp assembly 100 adopting threaded connection is convenient for use to the antithetical couplet coupling 610 of different length, improves the suitability to the clamp assembly 100 of different specifications.

The positioning ring 310 is disposed at the inner side of the lower portion of the adjusting sleeve 200, the supporting latch 320 is located between the lower end surface of the positioning ring 310 and the upper end surface of the first end plate 210, and the supporting latch 320 cannot move in the vertical direction but can only slide in the horizontal direction. When the sliding member 400 moves downward, the inclined surface on the inner side pushes the outer side of the supporting fixture block 320, which inclines downward, to slide toward the center axis of the adjusting sleeve 200, so as to tightly abut against the outer periphery of the sleeve 620, thereby ensuring the sealing property between the outer periphery of the sleeve 620 and the joint.

Referring to fig. 1, fig. 2 and fig. 4 together, as a specific embodiment of the cement head clamp type quick coupler of the present invention, the outer side surface of the supporting fixture block 320 is inclined downward, and the sliding member 400 includes a pushing ring 410 having an inclined surface slidably connected to the outer side surface of the supporting fixture block 320 at a lower portion thereof; an eccentric rotating shaft 420 provided on the adjusting sleeve 200 and used for driving the push ring 410 to move up and down, and a handle 430 provided at an outer end of the eccentric rotating shaft 420. The push ring 410 is provided with an inclined surface for sliding engagement with the supporting latch 320, and when the supporting latch 320 needs to be driven to move inward, the push ring 410 moves downward to push the supporting latch. In this embodiment, the eccentric rotating shaft 420 rotates to drive the pushing ring 410 to move downward, so as to realize the abutting effect of the supporting fixture block 320 on the outer wall of the sleeve 620. The eccentric rotating shafts 420 are disposed on the side walls of the adjusting sleeve 200, and the number of the corresponding supporting fixture blocks 320 may be set as a form of a plurality of eccentric rotating shafts 420, so as to push each supporting fixture block 320 toward the axis direction of the sleeve 620, to realize the abutting against the outer wall of the sleeve 620, and to realize the relative stability of the positions of the adjusting sleeve 200 and the sleeve 620. When the adjusting sleeve 200 is connected with the connecting sleeve 120, the threads between the adjusting sleeve and the connecting sleeve need to be screwed, so that the lower end surface of the abutting hoop 610 is directly abutted against the supporting fixture block 320, and the tightness between the inside of the abutting hoop 610 and the inside of the sleeve 620 and the joint is ensured.

In this embodiment, utilize eccentric pivot 420 to realize pushing away the pushing down of ring 410 to supporting fixture block 320, also can realize through other structural style, if adopt rack and pinion's form, the rack sets up in adjusting collar 200 inboard, and rack lower extreme and pushing away ring 410 fixed connection, be equipped with the trompil that is used for holding the gear on the lateral wall of adjusting collar 200, the effect that the pushing away of ring 410 that realizes gear drive rack and lower extreme through drive gear's main shaft descends, and then utilize pushing away ring 410 to promote supporting fixture block 320 to the one side removal of embracing sleeve 620 tightly, the realization is hugged tightly to sleeve 620 periphery, reach good sealed effect.

Referring to fig. 1, fig. 2 and fig. 4 together, as a specific embodiment of the cement head clamp type quick coupler of the present invention, the eccentric rotating shaft 420 includes a main shaft body 421 perpendicular to the main shaft of the adjusting sleeve 200 and rotatably connected to the adjusting sleeve 200, an inner shaft 422 parallel to the main shaft and rotatably connected to the main shaft body 421, and an outer shaft 423 disposed outside the main shaft body 421, wherein the main shaft is disposed inside the main shaft body 421 and is used for being inserted into and engaged with the supporting fixture block 320, and the handle 430 is connected to the outer shaft 423. A third hole for accommodating the spindle body 421 is formed in a side wall of the adjustment sleeve 200, and a retainer ring 440 for abutting against an outer end surface of the eccentric rotating shaft 420 is provided in the third hole. The spindle body 421 of the eccentric rotating shaft 420 is disposed in the third hole of the adjusting sleeve 200, and in order to ensure the position stability of the spindle body 421 in the axial direction, a retaining ring 440 is disposed outside the third hole to limit the outer end surface of the spindle body 421, and the inner side of the spindle body 421 is connected to the push ring 410 and receives the axial force of the push ring 410, so that the axial position of the spindle body 421 is in a stable state. When the handle 430 outside the outer shaft 423 is driven, the outer shaft 423, the main shaft body 421 and the inner shaft 422 are driven to synchronously rotate, and the inner shaft 422 and the pushing ring 410 are in a splicing fit mode, so that the pushing ring 410 is driven to move in the up-and-down direction while rotating in the circumferential direction, at the moment, the pushing ring 410 presses the supporting fixture block 320 downwards, the effect of pushing the supporting fixture block 320 to the inner side is realized through the sliding connection between the adjacent inclined planes between the two, further, the holding effect of the supporting fixture block 320 on the sleeve 620 is realized, and good sealing performance is kept.

Referring to fig. 1, fig. 2, fig. 4 and fig. 5, as an embodiment of the present invention, an annular elastic collar 321 is further disposed on the inner side of the supporting blocks 320 for abutting against the inner wall of the supporting blocks 320. Two annular elastic collars 321 are arranged in parallel in the axial direction of the supporting latch 320. In order to realize that a plurality of supporting fixture blocks 320 can be stably positioned at one side close to the inner wall of the sleeve 620 when not pressed by the pushing ring 410, an annular elastic collar 321 is arranged at the inner side of the supporting fixture block 320, and an opening is arranged on the circumference of the elastic collar 321 for realizing the effects of free outward expansion and forced retraction. In a natural state, the elastic collar 321 is used to apply a certain outward pressure to the supporting latch 320, so that the sleeve 620 can be smoothly mounted to the lower portion of the connector. In this embodiment, the supporting jaws 320 may be provided in different numbers of forms, such as 3, 4, 5, 6, 7, 8, etc., and all surround to form a ring shape of the clasping sleeve 620, and correspondingly, each supporting jaw 320 is driven by an eccentric rotating shaft 420. Further, an annular elastic collar 321 may be provided to penetrate the supporting latch 320. When the supporting fixture blocks 320 are not stressed, under the action of the force of the elastic collar 321, the supporting fixture blocks 320 are kept at positions close to the inner wall of the adjusting sleeve 200, when the eccentric rotating shaft 420 rotates, one of the supporting fixture blocks 320 is driven to move towards the center of the sleeve 620, at this time, the supporting fixture blocks 320 drive the elastic collar 321 to fold, and the elastic collar 321 drives the other supporting fixture blocks 320 to also fold towards the center of the sleeve 620, so that the holding effect on the sleeve 620 is realized.

Referring to fig. 1, fig. 2, fig. 4 and fig. 5, as a specific embodiment of the cement head clamp type quick coupler according to the present invention, the clamp assembly 100 includes a clamp body 110 having an upper end connected to the cement head and a connecting sleeve 120 screwed to the periphery of the clamp body 110, and a second end plate 121 is disposed at a lower end of the connecting sleeve 120. The band assembly 100 takes the form of a combination of a band body 110 and a connector sleeve 120, which are threadably connected. The second end plate 121 is used for supporting the supporting fixture 320 above, so as to tightly support the side wall of the sleeve 620 by the supporting fixture 320 and to be in sealing abutment with the bottom surface of the abutting hoop 610.

Referring to fig. 1 to 3, as a specific embodiment of the cement head clamp type quick coupler provided by the present invention, the lower end of the clamp body 110 is provided with a step hole, the sealing gasket assembly includes a support ring 111 disposed in the step hole and a sealing gasket 112 sleeved on the periphery of the lower end of the support ring 111, the support ring 111 includes a large diameter end 113 and a small diameter end 114 located at the lower portion of the large diameter end 113 and having an outer diameter smaller than the large diameter end 113, and the sealing gasket 112 is sleeved on the small diameter end 114 and having a lower end surface abutting against the top surface of the coupling clamp 610. The stepped hole of the hoop body 110 is used for accommodating a sealing gasket 112, the sealing gasket 112 is fixed by a support ring 111, the bottom surface of the sealing gasket 112 is abutted against the top end surface of the abutting joint 610, and in addition, the bottom end surface of the abutting joint 610 is abutted against the support fixture block 320, so that good connection sealing performance between the abutting joint 610 and the joint can be ensured.

Referring to fig. 1 to 3, as a specific embodiment of the clamp type quick coupler for cement head of the present invention, a sealing ring 115 is disposed on the periphery of the large diameter end 113, and a sealing gasket retaining ring 116 is disposed on the periphery of the sealing gasket 112. The sealing ring 115 disposed between the large diameter end 113 and the clamp body 110 is convenient for ensuring that the fluid flowing upward from the coupling head 610 can completely enter the lower cementing head, and the problem of outflow to the outside of the joint is avoided. The sealing gasket retainer ring 116 between the sealing gasket 112 and the clamp body 110 can effectively ensure that the sealing gasket 112 is stably positioned in the stepped hole of the clamp body 110, ensure the stability of the axial position, avoid the separation between the bottom surface of the sealing gasket 112 and the top surface of the joint top joint hoop 610 caused by the axial deviation, and ensure the stable abutting effect of the two.

Referring to fig. 1 to fig. 3, as a specific embodiment of the cement head clamp type quick coupler provided by the present invention, a first sealing assembly 130 is further disposed between the clamp assembly 100 and the outer wall of the coupling hoop 610, the first sealing assembly 130 includes a rubber protective sleeve 131 disposed in the connecting sleeve 120, a pressing block 132 disposed between the rubber protective sleeve 131 and the second end plate 121, and an annular sealing gasket 133 disposed inside the rubber protective sleeve 131 and the pressing block 132 and used for abutting against the outer wall of the coupling hoop 610. The first sealing assembly 130 is disposed between the top surface of the second end plate 121 and the bottom surface of the band body 110, and the inner wall of the first sealing assembly abuts against the outer wall of the abutting hoop 610, so as to ensure good sealing performance between the abutting hoop 610 and the joint. The clamp body 110 and the connecting sleeve 120 sleeved on the periphery of the lower portion of the clamp body adopt a detachable form, so that axial compression of the first sealing assembly 130 is facilitated, and effective attachment of the first sealing assembly 130 to the periphery of the connection hoop 610 is achieved. An O-shaped sealing ring 134 is arranged between the pressing block 132 and the connecting sleeve 120. Rubber protection cover 131 and briquetting 132 are located the outside of annular seal pad 133 respectively, combine annular seal pad 133 to realize the butt of antithetical couplet top coupling 610 lateral wall, realize sealed effect, the lower terminal surface of annular seal pad 133 passes through the top surface bearing of second end plate 121, annular seal pad 133's axial middle part is equipped with the bellied boss in outside week, rubber protection cover 131 is located the top of boss, briquetting 132 be with the below of boss, after locking targets in place between adapter sleeve 120 and clamp body 110, the top surface of rubber protection cover 131 and the bottom terminal surface butt of clamp body 110, the bottom surface and the second end plate 121 butt of briquetting 132, realize each part axial position's stability, so that realize annular seal pad 133's position stability through the fixing of the boss of annular seal pad 133 between the two, guarantee its and antithetical couplet top coupling 610 good butt sealing effect. In this embodiment, the pressing block 132 and the annular seal 133 are vulcanized into a single body.

Referring to fig. 1 to 4, as a specific embodiment of the cement head clamp type quick coupler of the present invention, a first tightening screw 117 is disposed between the periphery of the clamp body 110 and the connecting sleeve 120, and a second tightening screw 118 is disposed between the connecting sleeve 120 and the adjusting sleeve 200. A third jacking screw 119 is arranged between the positioning ring 310 and the adjusting sleeve 200. The clamp body 110 is in threaded connection with the connecting sleeve 120, and meanwhile, the clamping action with the clamp body 110 is realized through a first clamping screw 117 arranged on the side wall of the connecting sleeve 120, so that the stability of the axial positions of the clamp body 110 and the connecting sleeve 120 is ensured, and the sealing gasket assembly and the supporting fixture block 320 are respectively ensured to be effectively abutted against the top end surface and the bottom end surface of the abutting hoop 610. The second tightening screw 118 is used for ensuring the stability of the axial position between the connecting sleeve 120 and the adjusting sleeve 200, and realizing the abutting action of the supporting fixture block 320 on the bottom end face of the coupling head 610. Third holding screw 119 is used for on the stable fixed and adjusting collar 200's of holding ring 310 inner wall, be equipped with on the outer wall of holding ring 310 with the thread fit's on the adjusting collar 200 inner wall external screw thread, combine screw-thread fit, utilize third holding screw 119 to realize holding ring 310's positional stability, realize holding ring 310 lower extreme and face the effective limited of supporting fixture block 320 axial position, guarantee to support fixture block 320 and move to the inboard the level when receiving slider 400's effect, avoid it to take place axial position's removal.

The use method of the cement head clamp type quick coupler comprises the following steps:

connecting the cement head to the collar assembly 100;

connecting the casing 620 and the landing collar 610, and integrally penetrating the casing 620 and the landing collar 610 into the adjustment sleeve 200;

sleeving the whole body of the cementing head and the hoop assembly 100 on the jacking collar 610;

the driving slider 400 moves down to the supporting fixture 320 to press the outer circumference of the sleeve 620;

the adjusting sleeve 200 is rotated until the top surface of the supporting fixture block 320 is tightly pressed against the lower end surface of the abutting hoop 610.

The joint is adopted to connect a cement head, a jacking hoop 610 and a sleeve 620, firstly, the cement head is connected with the upper end of a hoop component 100 through threads, then, the sleeve 620 is connected with the jacking hoop 610, the sleeve 620 and the jacking hoop 610 are integrally penetrated into an adjusting sleeve 200, then, the cement head and the hoop component 100 are integrally hoisted to the positions above the sleeve 620 and the jacking hoop 610 to enable the cement head and the hoop component to move downwards to the position where the top surface of the jacking hoop 610 is contacted with a sealing gasket component, then, a handle 430 is driven to realize that an eccentric rotating shaft 420 rotates to drive a pushing ring 410 to push a supporting fixture block 320, so that the supporting fixture block 320 clasps the sleeve 620, finally, the adjusting sleeve 200 is rotated until the top surface of the supporting fixture block 320 is abutted against the lower end surface of the jacking hoop 610, and at the top surface of the jacking hoop 610 is contacted with the sealing gasket component to be.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. The cement head clamp type quick coupler is characterized by comprising a clamp component and an adjusting sleeve, wherein the clamp component is sleeved on the periphery of a joint hoop, and the adjusting sleeve is in threaded connection with the periphery of the lower end of the clamp component;

the upper end of the hoop component is used for being connected with a cement head, and a sealing gasket component used for being abutted against the top surface of the abutting joint hoop is arranged in the hoop component;

a locking support assembly used for being abutted against the top surface of the abutting hoop is arranged in the adjusting sleeve and comprises a positioning ring arranged on the inner side of the adjusting sleeve, a plurality of supporting clamping blocks positioned below the positioning ring and a sliding piece arranged between the supporting clamping blocks and the inner wall of the adjusting sleeve; the supporting fixture blocks are used for enclosing into a ring shape which is abutted against the outer wall of the sleeve, and the top surfaces of the supporting fixture blocks are abutted against the bottom surface of the abutting joint hoop; the sliding part is used for driving the supporting fixture block to fold towards the axis of the adjusting sleeve in a downward moving mode; the bottom of adjusting collar be equipped with the first end plate of the bottom surface butt of support fixture block.

2. The cement head clamp quick coupler as claimed in claim 1, wherein said outer side surface of said supporting clamp is inclined downward, and said slider comprises:

the lower part of the pushing ring is provided with an inclined plane which is used for being in sliding connection with the outer side surface of the supporting clamping block;

the eccentric rotating shaft penetrates through the adjusting sleeve and is used for driving the pushing ring to move up and down; and

and the handle is arranged at the outer end of the eccentric rotating shaft.

3. The cement head clamp quick coupler of claim 2 wherein said eccentric spindle comprises:

the main shaft body penetrates through the side wall of the adjusting sleeve and is rotatably connected with the adjusting sleeve;

the inner shaft is parallel to the main shaft body, is arranged on the inner side of the main shaft body and is used for being in inserted fit with the supporting clamping block; and

the outer shaft is arranged on the outer side of the main shaft body and connected with the handle.

4. The cement head clamp quick coupler as claimed in claim 1, wherein said plurality of said support blocks are further provided at inner sides thereof with annular elastic collars for abutting against inner walls of said support blocks.

5. The cement head clamp quick coupler of claim 4 wherein said annular resilient collar is disposed in parallel two in the axial direction of said support clamp.

6. The cement head clamp type quick coupler as claimed in any one of claims 1 to 5, wherein the clamp assembly comprises a clamp body having an upper end connected to the cement head and a connecting sleeve screwed to the outer periphery of the clamp body, and a second end plate is provided at a lower end of the connecting sleeve.

7. The cement head clamp type quick coupler as claimed in claim 6, wherein the lower end of the clamp body is provided with a stepped hole, the sealing gasket assembly comprises a support ring disposed in the stepped hole and a sealing gasket sleeved on the periphery of the lower end of the support ring, the support ring comprises a large diameter end and a small diameter end located at the lower part of the large diameter end and having an outer diameter smaller than that of the large diameter end, and the sealing gasket is sleeved on the small diameter end and having a lower end surface abutted against the top surface of the coupling collar.

8. The cement head clamp quick coupler as claimed in claim 7, wherein said large diameter end is provided at its outer periphery with a gasket, and said gasket is provided at its outer periphery with a gasket retainer.

9. The cement head clamp quick coupler as claimed in claim 6, wherein a first sealing assembly is further disposed between the clamp assembly and the outer wall of the coupling collar, the first sealing assembly including a rubber protective sleeve disposed in the connecting sleeve, a pressing block disposed between the rubber protective sleeve and the second end plate, and an annular sealing gasket disposed inside the rubber protective sleeve and the pressing block and adapted to abut against the outer wall of the coupling collar.

10. The cement head clamp type quick coupler as claimed in claim 6, wherein a first tightening screw is provided between the clamp body and the connecting sleeve, and a second tightening screw is provided between the connecting sleeve and the adjusting sleeve.

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