CN217256024U - Locking structure for long pipe joint - Google Patents

Abstract

The utility model discloses a long pipe joint locking structure, it includes gear engagement driving mechanism, the outer hexagonal joint supporter that is used for supporting the outer hexagonal part of sealing joint and the activity that is used for locking outer hexagonal pipe joint expand and close locking mechanism, activity expands and closes locking mechanism and exists two states of expanding and closuring, have a diameter when expanding the state and is greater than the flaring of the diameter of the circumscribed circle of outer hexagonal pipe joint, the pre-connecting piece that forms by sealing joint, outer hexagonal pipe joint, long pipe pre-connection passes the flaring and outer hexagonal pipe joint is located the flaring or takes out through the flaring by the assembly part that sealing joint, outer hexagonal pipe joint, long pipe assembly formed; when the movable expanding and closing locking mechanism is in a closed state, a hexagonal locking ring matched with the outer hexagonal pipe joint is arranged, and after the movable expanding and closing locking mechanism is self-locked, the gear meshing driving mechanism drives the movable expanding and closing locking mechanism to rotate so as to enable the outer hexagonal pipe joint to be screwed to a standard torque; the advantage is that it can effectively improve the efficiency that long pipe coupling locked.

Description

Locking structure for long pipe joint

Technical Field

The utility model relates to a connect the locking facility, especially relate to a long tube coupling locking structure.

Background

Fig. 7 is an exploded view of the sealed joint before assembly with the long pipe (tubing). Currently, many manufacturers commonly use a long pipe joint locking device to connect the sealing joint 100 and the long pipe 200, which includes a hydraulic motor, a pinion, a gearwheel, and an inner hexagonal flange, wherein an output shaft of the hydraulic motor is connected to the pinion, the pinion is engaged with the gearwheel, the inner hexagonal flange is disposed in an inner hole of the gearwheel, and an inner hexagonal hole of the inner hexagonal flange is matched with the pipe joint 300 (i.e., an outer hexagonal pipe joint) having an outer hexagonal structure. When the sealing joint 100 and the long pipe 200 need to be assembled, the pipe joint 300 with the outer hexagonal structure is placed in the inner hexagonal hole of the inner hexagonal flange, one end of the pipe joint 300 with the outer hexagonal structure is pre-connected with the sealing joint 100, the other end of the pipe joint 300 with the outer hexagonal structure is pre-connected with the threaded connection end 201 of the long pipe 200, the hydraulic motor drives the small gear to drive the large gear to rotate, so that the pipe joint 300 with the outer hexagonal structure rotates, the screwing is stopped after the standard torque is achieved, and the assembly of the sealing joint 100 and the long pipe 200 through the pipe joint 300 is completed. The long pipe joint locking facility is simple in structure and convenient to use, however, after the sealing joint 100 and the long pipe 200 are assembled through the pipe joint 300, because the outer hexagonal component 101 on the sealing joint 100 and the hexagon of the pipe joint 300 with the outer hexagonal structure are generally not at the same angle, when the assembled long pipe 200 is taken out, the inner hexagonal flange must be firstly removed, which causes the operation to be complicated, thereby reducing the long pipe joint locking efficiency; in addition, the pipe joint 300 having the outer hexagonal structure must be placed in the inner hexagonal hole of the inner hexagonal flange and then pre-connected, which brings inconvenience to the pre-connection operation.

Disclosure of Invention

The utility model aims to solve the technical problem that a long pipe coupling locking structure is provided, its efficiency that can effectively improve the locking of long pipe coupling.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: the utility model provides a long pipe coupling locking structure, includes gear engagement drive mechanism, its characterized in that: also comprises an outer hexagonal joint supporting member for supporting the outer hexagonal part of the sealing joint and a movable expanding and closing locking mechanism for locking the outer hexagonal joint, the movable expanding and closing locking mechanism has two states of an expanding state and a closing state, the movable expanding and closing locking mechanism has an expanding opening with the diameter larger than the diameter of the circumscribed circle of the outer hexagonal pipe joint when in the expanding state, the movable expanding and closing locking mechanism is provided with a hexagonal locking ring matched with the outer hexagonal pipe joint when in a closed state, when the movable expanding and closing locking mechanism is in an expanding state, a pre-connecting piece formed by pre-connecting a sealing joint, an outer hexagonal pipe joint and a long pipe penetrates through the expanding opening, the outer hexagonal pipe joint is positioned in the expanding opening, or an assembly piece formed by assembling the sealing joint, the outer hexagonal pipe joint and the long pipe is taken out through the expanding opening; when the movable expanding and closing locking mechanism is in a closed state, the hexagonal locking ring is attached to the outer peripheral wall of the outer hexagonal pipe joint, and after the movable expanding and closing locking mechanism is subjected to self-locking, the gear meshing driving mechanism drives the movable expanding and closing locking mechanism to rotate so that the outer hexagonal pipe joint is screwed to a standard torque.

The gear engagement driving mechanism consists of a hydraulic motor, a driving gear and a locking gear, the diameter of an inner hole of the locking gear is larger than that of an outer hexagon pipe joint, an output shaft of the hydraulic motor is connected with the driving gear, the driving gear is engaged with the locking gear, the hydraulic motor outputs power to drive the driving gear to drive the locking gear to rotate, and the locking gear drives the movable expansion locking mechanism to rotate. The diameter of the inner hole of the locking gear is required to be larger than the diameter of the circumscribed circle of the outer hexagonal pipe joint, so that the assembled assembly part can be easily taken out even if the hexagon of the outer hexagonal pipe joint and the hexagon of the outer hexagonal part of the sealing joint are not at the same angle after assembly is finished.

The movable expanding and closing locking mechanism consists of a gasket and six locking plates, the diameter of an inner hole of the gasket is larger than that of an outer circle of an outer hexagonal pipe joint, a connecting pin is fixed on the inner end of each locking plate, the end of the inner end of each locking plate is designed into a semicircular structure to serve as a locking head, one side of each locking plate is close to the locking head and is provided with a locking platform, the middle parts of the same sides of the locking plates are provided with locking grooves of the semicircular structures, the outer ends of the locking plates extend to the middle parts to be provided with elongated sliding grooves, one shaft end face of each locking gear is uniformly provided with six fixing pins along the circumferential direction, the fixing pins are matched with the elongated sliding grooves, the gasket is uniformly provided with six connecting holes along the circumferential direction, and the six locking plates are radially and uniformly distributed towards the periphery by taking the circle center of the gasket as the center, the connecting pins are movably connected with the connecting holes in a one-to-one correspondence manner, the lock head is enabled to be clung to one shaft end face of the gasket, the free end of each fixing pin penetrates through one elongated sliding groove and is positioned at the inner end of the elongated sliding groove, and the other shaft end face of the gasket is enabled to be clung to the shaft end face opposite to the locking gear in a coaxial manner; when the lock heads face to the circle center of the gasket and the free ends of the fixing pins are positioned at the inner ends of the long strip-shaped sliding chutes, the movable expanding and closing locking mechanism is in an expanding state, and at the moment, the space enclosed by all the lock heads forms the expanding opening; make the packing ring rotatory and then make adjacent two the locking plate in one of them piece the locking plate in the tapered end imbed another piece completely the locking plate in the locked groove in, and the free end of fixed pin follow the inner of rectangular shape spout slide to the outer end of rectangular shape spout, the activity expand close locking mechanical system be in the state of foldeing this moment, all locking platform enclose into an inner hexagonal structure and all locking platform's surface enclose into hexagon locking ring. The movable expanding and closing locking mechanism is simple in structure, the expanding state and the closing state are convenient to switch, one of the connecting pins can be manually pushed during operation to enable the gasket to rotate from the expanding state to the closing state, and then the gasket rotates in the opposite direction to convert from the closing state to the expanding state; the diameter of the inner hole of the gasket is required to be larger than the diameter of the circumscribed circle of the outer hexagonal pipe joint, so that the assembled assembly part can be easily taken out even if the hexagon of the outer hexagonal pipe joint and the hexagon of the outer hexagonal part of the sealing joint are not at the same angle after the assembly is finished.

The locking plate between be provided with self-locking structure with arbitrary piece the packing ring between, self-locking structure include the lockpin, follow the circumference of packing ring evenly set up in the packing ring on six first locking holes, set up in arbitrary piece the locking plate on the second locking hole, the activity expand close locking mechanism when being in the state the second locking hole rather than one first locking hole just right, the lockpin insert the second locking hole with first locking hole in realize the auto-lock of activity expand close locking mechanism. The self-locking structure can maintain the movable expanding and closing locking mechanism to be always in a closed state, when the outer hexagonal pipe joint is screwed to the standard torque, the lock pin can be pulled out, then the gasket is rotated to enable the lock head to be separated from the lock groove, and the movable expanding and closing locking mechanism is changed from the closed state to an expanded state; a second locking hole can be formed in each lock piece for machining, so that the lock pin can be inserted into any pair of the second locking hole and the first locking hole which are opposite in position, and self-locking is more convenient.

One end of the outer hexagonal joint supporting member is provided with an inner hexagonal supporting hole, and an outer hexagonal part of the sealing joint is arranged in the inner hexagonal supporting hole. The outer hexagonal part of the sealing joint is arranged in the inner hexagonal bearing hole, so that the sealing joint can be fixed when the outer hexagonal joint bearing is fixed.

Compared with the prior art, the utility model has the advantages of:

when the movable expanding and closing locking mechanism is in an expanding state, the diameter of the expanding opening is larger than that of an external circle of the external hexagonal pipe joint, so that on one hand, even if an external hexagonal part of the sealing joint in a pre-connecting piece formed by pre-connecting the sealing joint, the external hexagonal pipe joint and the long pipe is not at the same angle with the hexagon of the external hexagonal pipe joint, the pre-connecting piece can easily penetrate through the expanding opening, namely pre-connecting can be carried out firstly, and the pre-connecting operation is more convenient; on the other hand, even if the outer hexagonal part of the sealing joint and the hexagon of the outer hexagonal pipe joint are not at the same angle in an assembly part formed by assembling the sealing joint, the outer hexagonal pipe joint and the long pipe, the assembly part can be easily taken out through the flaring, the operation is simple and convenient, and the locking efficiency of the long pipe joint is greatly improved; when the movable expanding and closing locking mechanism is in a closed state, the hexagonal locking ring is attached to the outer peripheral wall of the outer hexagonal pipe joint, so that the outer hexagonal pipe joint can rotate together by rotating the movable expanding and closing locking mechanism, and the assembly of the sealing joint, the outer hexagonal pipe joint and the long pipe is realized after the outer hexagonal pipe joint is screwed to the standard torque.

Drawings

FIG. 1 is a first schematic structural view of a long pipe joint locking structure of the present invention for assembling a sealing joint, an outer hexagonal pipe joint and a long pipe;

FIG. 2 is a second schematic structural view of the long pipe joint locking structure of the present invention for assembling the sealing joint, the outer hexagonal pipe joint and the long pipe;

FIG. 3 is a first schematic exploded view of FIGS. 1 and 2;

FIG. 4 is a second schematic exploded view of FIGS. 1 and 2;

FIG. 5 is a schematic view of the connection structure of all locking plates in the movable expanding and closing locking mechanism in the long pipe joint locking structure of the present invention in the closed state;

FIG. 6 is a schematic structural view of a washer in the movable expanding and closing locking mechanism of the long pipe joint locking structure of the present invention;

fig. 7 is an exploded view of the sealing fitting and the long tube (oil pipe) before assembly.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

The utility model provides a long pipe joint locking structure, as shown in fig. 1 to fig. 6, it includes gear engagement driving mechanism 1, outer hexagonal joint supporting member 2 for supporting outer hexagonal part 101 of sealing joint 100 and movable expanding locking mechanism 3 for locking outer hexagonal joint 300, movable expanding locking mechanism 3 has two states of expanding state and closed state, when movable expanding locking mechanism 3 is in expanding state, it has a flaring (not shown in the figure) whose diameter is larger than the diameter of circumscribed circle of outer hexagonal joint 300, when movable expanding locking mechanism 3 is in closed state, it has a hexagon locking ring 32 adapted with outer hexagonal joint 300, make movable expanding locking mechanism 3 be in expanding state, by sealing joint 100, the pre-connection piece formed by pre-connecting the outer hexagonal pipe joint 300 and the long pipe 200 penetrates through the flaring and the outer hexagonal pipe joint 300 is positioned in the flaring; the movable expanding-closing locking mechanism 3 is in a closed state, the hexagonal locking ring 32 is attached to the outer peripheral wall of the outer hexagonal pipe joint 300, and after the movable expanding-closing locking mechanism 3 is self-locked, the gear meshing driving mechanism 1 drives the movable expanding-closing locking mechanism 3 to rotate so that the outer hexagonal pipe joint 300 is screwed to a standard torque; the movable expanding and closing locking mechanism 3 is in an expanding state again, the outer hexagonal joint supporting member 2 is taken down, and an assembly formed by assembling the sealing joint 100, the outer hexagonal joint 300 and the long pipe 200 is taken out through expanding.

In this embodiment, the gear-meshing driving mechanism 1 includes a hydraulic motor (not shown), a driving gear (not shown), and a locking gear 11, wherein a diameter of an inner hole 12 of the locking gear 11 is greater than a diameter of a circumscribed circle of the external hexagonal pipe joint 300 (generally, the size of the external hexagonal pipe joint 300 is the same as the size of the external hexagonal part 101 of the sealing joint 100, and if the two are not the same, the diameter of the inner hole 12 of the locking gear 11 is greater than a diameter of a circumscribed circle of the two, an output shaft of the hydraulic motor is connected to the driving gear, the driving gear is meshed with the locking gear 11, the driving gear is driven by output power of the hydraulic motor to drive the locking gear 11 to rotate, and the locking gear 11 drives the movable expansion locking mechanism 3 to rotate. It is required that the diameter of the inner hole 12 of the lock gear 11 is larger than the diameter of the circumscribed circle of the outer hexagonal socket 300 so that the assembled assembly can be easily taken out even if the hexagonal of the outer hexagonal socket 300 is not at the same angle as the hexagonal of the outer hexagonal part 101 of the sealing joint 100 after the assembly is completed.

In this embodiment, the movable expanding-closing locking mechanism 3 comprises a washer 33 and six locking plates 34, the diameter of an inner hole 331 of the washer 33 is larger than the diameter of an outer circle of the outer hexagonal pipe joint 300, a connecting pin 341 is fixed on the inner end of the locking plate 34, the end of the inner end of the locking plate 34 is designed to be a semicircular structure as a locking head 342, one side of the locking plate 34 near the locking head 342 is provided with a locking platform 343, the middle part of the same side of the locking plate 34 is provided with a semicircular locking groove 344, the outer end of the locking plate 34 extends to the middle part and is provided with a long strip chute 345, one shaft end face of the locking gear 11 is uniformly provided with six fixing pins 13 along the circumferential direction, the fixing pins 13 are adapted to the long strip chute 345 and can slide in the long strip chute 345, the washer 33 is uniformly provided with six connecting holes 332 along the circumferential direction, the six locking plates 34 are centered around the center of the washer 33 and the locking head 342 is uniformly distributed radially toward the center, the connecting pins 341 are movably connected with the connecting holes 332 in a one-to-one correspondence manner, the tapered end 342 is made to be closely attached to one shaft end face of the washer 33, the free end of each fixing pin 13 passes through one elongated sliding groove 345 and is positioned at the inner end of the elongated sliding groove 345, and the other shaft end face of the washer 33 is made to be coaxially closely attached to the shaft end face opposite to the lock gear 11; when the locking heads 342 face the circle center of the washer 33 and the free end of the fixing pin 13 is located at the inner end of the elongated sliding groove 345, the movable expanding and locking mechanism 3 is in an expanded state, and at the moment, the space surrounded by all the locking heads 342 forms an expanded opening; the washer 33 is rotated to completely insert the lock 342 of one of the two adjacent locking plates 34 into the lock groove 344 of the other locking plate 34, and the free end of the fixing pin 13 slides from the inner end of the elongated sliding groove 345 to the outer end of the elongated sliding groove 345, at this time, the movable expanding and closing locking mechanism 3 is in a closed state, all the locking platforms 343 form an inner hexagonal structure, and the surfaces of all the locking platforms 343 form a hexagonal locking ring 32. The movable expanding-closing locking mechanism 3 has a simple structure, the expanding state and the closing state are convenient to switch, one of the connecting pins 341 can be manually pushed during operation to enable the gasket 33 to rotate from the expanding state to the closing state, and then the gasket 33 rotates in the opposite direction to switch from the closing state to the expanding state, the structure shown in the figure is that the gasket 33 rotates clockwise to switch from the expanding state to the closing state, and the gasket 33 rotates anticlockwise to switch from the closing state to the expanding state; it is required that the diameter of the inner hole 331 of the gasket 33 is larger than the diameter of the circumscribed circle of the outer hexagonal socket 300 so that the assembled assembly can be easily taken out even if the hexagonal shape of the outer hexagonal socket 300 is not at the same angle with the hexagonal shape of the outer hexagonal part 101 of the sealing joint 100 after the assembly is completed.

In this embodiment, a self-locking structure 35 is disposed between the washer 33 and any one of the locking plates 34, the self-locking structure 35 includes a locking pin 351, six first locking holes 352 uniformly opened on the washer 33 along the circumferential direction of the washer 33, and a second locking hole 353 opened on any one of the locking plates 34, when the movable expansion and contraction locking mechanism 3 is in the closed state, the second locking hole 353 is opposite to one of the first locking holes 352, and the locking pin 351 is inserted into the second locking hole 353 and the first locking hole 352 to realize self-locking of the movable expansion and contraction locking mechanism 3. The self-locking structure 35 can maintain the movable expanding-closing locking mechanism 3 in a closed state all the time, when the outer hexagonal pipe joint 300 is screwed to a standard torque, the lock pin 351 can be pulled out, the washer 33 is rotated to make the lock head 342 separate from the lock groove 344, and the movable expanding-closing locking mechanism 3 is changed from the closed state to an expanded state; a second locking hole 353 can be formed in each locking plate 34 for convenient processing, so that the locking pin 351 can be inserted into any pair of the second locking hole 353 and the first locking hole 352 which are opposite to each other, and self-locking is more convenient.

In this embodiment, an inner hexagonal support hole 21 is opened at one end of the outer hexagonal joint supporter 2, and the outer hexagonal member 101 of the sealing joint 100 is placed in the inner hexagonal support hole 21. The outer hexagonal member 101 of the sealing joint 100 is placed in the inner hexagonal support hole 21, so that the sealing joint 100 can be securely fixed while the outer hexagonal joint support 2 is fixed.

When the long pipe joint locking structure is used for assembling the sealing joint 100, the outer hexagonal pipe joint 300 and the long pipe 200, the locking gear 11 is usually vertically placed, that is, the axis of the locking gear 11 is parallel to the horizontal plane, and no matter the movable expanding and closing locking mechanism 3 is in an expanding state or a closing state, the gasket 33 and the locking gear 11 can be always coaxial through the matching of the fixing pin 13 and the elongated sliding groove 345.

Claims (5)

1. The utility model provides a long pipe coupling locking structure, includes gear engagement drive mechanism, its characterized in that: also comprises an outer hexagonal joint supporting member for supporting the outer hexagonal part of the sealing joint and a movable expanding and closing locking mechanism for locking the outer hexagonal joint, the movable expanding and closing locking mechanism has two states of an expanding state and a closing state, the movable expanding and closing locking mechanism has an expanding opening with the diameter larger than the diameter of the circumscribed circle of the outer hexagonal pipe joint when in the expanding state, the movable expanding and closing locking mechanism is provided with a hexagonal locking ring matched with the outer hexagonal pipe joint when in a closed state, when the movable expanding and closing locking mechanism is in an expanding state, a pre-connecting piece formed by pre-connecting a sealing joint, an outer hexagonal pipe joint and a long pipe penetrates through the expanding opening, the outer hexagonal pipe joint is positioned in the expanding opening, or an assembly part formed by assembling the sealing joint, the outer hexagonal pipe joint and the long pipe is taken out through the expanding opening; when the movable expanding and closing locking mechanism is in a closed state, the hexagonal locking ring is attached to the outer peripheral wall of the outer hexagonal pipe joint, and after the movable expanding and closing locking mechanism is self-locked, the gear meshing driving mechanism drives the movable expanding and closing locking mechanism to rotate so that the outer hexagonal pipe joint is screwed to a standard torque.

2. The proboscis fitting locking structure of claim 1, wherein: the gear engagement driving mechanism consists of a hydraulic motor, a driving gear and a locking gear, the diameter of an inner hole of the locking gear is larger than the diameter of an outer circle of an outer hexagonal pipe joint, an output shaft of the hydraulic motor is connected with the driving gear, the driving gear is engaged with the locking gear, the hydraulic motor outputs power to drive the driving gear to drive the locking gear to rotate, and the locking gear drives the movable expanding locking mechanism to rotate.

3. The proboscis fitting locking structure of claim 2, wherein: the movable expanding and closing locking mechanism consists of a gasket and six locking plates, the diameter of an inner hole of the gasket is larger than that of an outer circle of an outer hexagonal pipe joint, a connecting pin is fixed on the inner end of each locking plate, the end of the inner end of each locking plate is designed into a semicircular structure to serve as a locking head, one side of each locking plate is close to the locking head and is provided with a locking platform, the middle parts of the same sides of the locking plates are provided with semicircular structure locking grooves, the outer ends of the locking plates extend to the middle parts and are provided with elongated sliding grooves, one shaft end face of each locking gear is uniformly provided with six fixing pins along the circumferential direction, the fixing pins are matched with the elongated sliding grooves, the gasket is uniformly provided with six connecting holes along the circumferential direction, and the six locking plates use the circle center of the gasket as the center and the locking heads are uniformly distributed in a radial shape towards the periphery in a radial direction, the connecting pins are movably connected with the connecting holes in a one-to-one correspondence manner, the lock head is enabled to be clung to one shaft end face of the gasket, the free end of each fixing pin penetrates through one elongated sliding groove and is positioned at the inner end of the elongated sliding groove, and the other shaft end face of the gasket is enabled to be clung to the shaft end face opposite to the locking gear in a coaxial manner; when the lock heads face to the circle center of the gasket and the free ends of the fixing pins are positioned at the inner ends of the long strip-shaped sliding chutes, the movable expanding and closing locking mechanism is in an expanding state, and at the moment, the space enclosed by all the lock heads forms the expanding opening; make the packing ring rotatory and then make adjacent two the locking plate in one of them piece the locking plate in the tapered end imbed another piece completely the locking plate in the locked groove in, and the free end of fixed pin follow the inner of rectangular shape spout slide to the outer end of rectangular shape spout, the activity expand close locking mechanical system be in the state of foldeing this moment, all locking platform enclose into an inner hexagonal structure and all locking platform's surface enclose into hexagon locking ring.

4. A proboscis fitting locking structure according to claim 3, wherein: the locking plate between be provided with self-locking structure with arbitrary piece the packing ring between, self-locking structure include the lockpin, follow the circumference of packing ring evenly set up in the packing ring on six first locking holes, set up in arbitrary piece the locking plate on the second locking hole, the activity expand close locking mechanism when being in the state the second locking hole rather than one first locking hole just right, the lockpin insert the second locking hole with first locking hole in realize the auto-lock of activity expand close locking mechanism.

5. A long-pipe joint locking structure according to any one of claims 1 to 4, wherein: one end of the outer hexagonal joint supporting piece is provided with an inner hexagonal supporting hole, and an outer hexagonal part of the sealing joint is arranged in the inner hexagonal supporting hole.

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