CN220978570U - Socket sleeve, mechanical connecting piece and prefabricated component combination - Google Patents

Abstract

The utility model relates to the field of prefabricated part connection, and discloses a socket sleeve, a mechanical connecting piece and a prefabricated part combination. The guide cavity section and the avoidance cavity section jointly provide sliding space for sliding of the wedge clamping ring, so that the radial thickness of the guide cavity section can be reduced, the outer diameter of the socket sleeve is reduced, the overall size of the mechanical connecting piece is reduced on the premise of ensuring the connection strength, the overall structural arrangement of the mechanical connecting piece is more compact, and the cost of parts can be reduced.

Description

Socket sleeve, mechanical connecting piece and prefabricated component combination

Technical Field

The utility model relates to the field of connection of prefabricated parts, in particular to a socket sleeve, a mechanical connector and a prefabricated part combination.

Background

In order to facilitate the butt joint of the stress bars between two adjacent prefabricated components, a plurality of mechanical connectors are arranged at intervals on the end faces of the prefabricated components, and the number and arrangement modes of the mechanical connectors are affected by the mechanical connection strength, the number and arrangement modes of the stress bars and the like. Based on factors such as reliability, the convenience of installation, the manufacturing of being convenient for of butt joint consider, and the spare part quantity that current mechanical connection spare contained is numerous, nevertheless exists structural arrangement and is not compact, leads to mechanical connection spare's overall structure size too big for the part cost increases, is unfavorable for arranging sufficient quantity mechanical connection spare in prefabricated component terminal surface rationally moreover, influences the reasonable setting of the atress muscle root number and the mode of arranging of prefabricated component terminal surface even.

Disclosure of utility model

In order to solve the technical problems, the utility model provides the socket sleeve which has a compact structure and can reduce the overall size of a mechanical connecting piece and save the cost of parts, and the mechanical connecting piece comprising the socket sleeve.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a socket sleeve, which is provided with an inner cavity which is axially penetrated, wherein a guide cavity section and an avoidance cavity section are sequentially formed at a preset depth from an cavity opening of the inner cavity, the guide cavity section is conical, the cavity diameter is gradually increased from the cavity opening to the avoidance cavity section, a stop step is formed between the avoidance cavity section and the guide cavity section, and the stop step is in arc transition or inclined cone transition connection with the avoidance cavity section.

Further, the socket sleeve comprises a mother cylinder body and a son cylinder body, and the son cylinder body is arranged in the mother cylinder body; the guide cavity section is arranged on the sub-cylinder body and far away from the cavity opening, and the avoidance cavity section is arranged on the parent cylinder body.

Further, the stop step is at least partially positioned at the tail part of the sub-cylinder; and/or the main cylinder body is in threaded connection with the sub cylinder body, and a screwing part is arranged at one end of the sub cylinder body, which is close to the cavity opening.

The utility model also provides a mechanical connector, which comprises a plug rod with a reducing plug connector, the socket sleeve, a wedge clamping ring and an elastic component, wherein the wedge clamping ring and the elastic component are arranged in the socket sleeve; when the reducing plug connector is inserted into the inner cavity and the wedge clamping ring is spread, the wedge clamping ring slides forward along the guide cavity section and at least partially stretches into the avoidance cavity section; when the maximum diameter of the reducing plug connector passes through the wedge clamping ring, the wedge clamping ring slides reversely along the guide cavity section to gather under the pushing action of the elastic component so as to clamp the reducing plug connector.

Further, the inner cavity is formed with an accommodating cavity section for accommodating the elastic component, the accommodating cavity section is located at one side of the avoidance cavity section away from the guide cavity section, and the inner diameter of the accommodating cavity section is smaller than that of the avoidance cavity section.

Further, one end of the wedge clamping ring, which is close to the guide cavity section, is provided with an outer conical surface matched with the guide cavity section, one end of the wedge clamping ring, which is close to the elastic component, protrudes radially outwards to form a resisting part, the resisting part is connected with the outer conical surface in an obtuse angle, and the resisting part can axially abut against the stop step.

Further, the wedge clamping ring is of an integrated structure, the wedge clamping ring comprises at least two arc-shaped wedge clamping pieces which are arranged at intervals along the circumferential direction, and the adjacent two arc-shaped wedge clamping pieces are connected through a breakable connecting part; or the wedge clamping ring is of a split structure, and comprises at least two arc wedge clamping pieces spliced into a ring shape along the circumferential direction; or the cross section shape of the wedge clamping ring is C-shaped;

And/or the inner wall of one end of the wedge clamping ring, which is close to the guide cavity section, is provided with a cutting groove;

And/or, the outer wall or the inner wall of the wedge clamping ring is provided with a groove, and the groove is provided with an elastic ring in a holding way;

And/or the inner wall of the wedge clamping ring is provided with annular clamping teeth or thread teeth;

and/or the outer wall and/or the inner wall of the wedge clamping ring are/is provided with strength weakening grooves, and the cross section of each strength weakening groove is arc-shaped, triangular, trapezoidal, cross-shaped, I-shaped or quincuncial.

Further, the elastic component comprises an elastic piece and a supporting pad arranged at one end, close to the wedge clamping ring, of the elastic piece, and the wedge clamping ring is pressed on the supporting pad; or the elastic component comprises an elastic piece, and the wedge clamping ring is pressed on the elastic piece.

Further, the mechanical connecting piece further comprises a nut sleeve and a first tightening nut, wherein one end part of the inserted rod, which is far away from the reducing plug connector, is in threaded connection with the nut sleeve, and the first tightening nut is in threaded connection with the inserted rod so as to be abutted against the end face, which is close to one end of the socket sleeve, of the nut sleeve;

And/or, the mechanical connecting piece further comprises a second tightening nut, and the second tightening nut is in threaded connection with the inserted rod so as to be abutted against the end face of the socket sleeve, which is far away from one end of the elastic component.

Compared with the prior art, the utility model has the following beneficial effects:

The inner cavity of the socket sleeve is formed with a guide cavity section and an avoidance cavity section which are adjacent to each other in sequence at a preset depth from the cavity opening, the guide cavity section is conical, the cavity diameter is gradually increased from the cavity opening to the avoidance cavity section, a stop step is formed between the avoidance cavity section and the guide cavity section, and the stop step is in arc transition or oblique cone transition connection with the avoidance cavity section. The guide cavity section and the avoidance cavity section provide sliding space for sliding of the wedge clamping ring together, under the condition that the size of the wedge clamping ring and the size of the inserted link are not changed, compared with the situation that the avoidance cavity section is not arranged in the socket sleeve, the radial thickness of the guide cavity section is only relied on to provide sliding space for sliding of the wedge clamping ring, so that the radial thickness of the guide cavity section is reduced, the outer diameter of the socket sleeve is reduced, the overall size of the mechanical connecting piece is reduced on the premise of ensuring the connection strength, the overall structural arrangement of the mechanical connecting piece is more compact, and the cost of parts can be reduced.

In addition to the above, the present utility model also provides a prefabricated component combination comprising at least two prefabricated components, the two prefabricated components being butted by a connector as described above. The prefabricated component combination comprises the connecting piece, so that the prefabricated component combination has the same beneficial effects as the connecting piece.

Drawings

FIG. 1 is a schematic view of a first socket sleeve according to a first embodiment of the present utility model;

FIG. 2 is a schematic view of a second socket sleeve according to a first embodiment of the present utility model;

FIG. 3 is a schematic view of a third socket sleeve according to a first embodiment of the present utility model;

FIG. 4 is a schematic illustration of a first mechanical connector according to a first embodiment of the present utility model during plugging;

Fig. 5 is an enlarged view of a portion B in fig. 4;

FIG. 6 is a schematic view of a first mechanical connector according to a first embodiment of the present utility model after plugging;

Fig. 7 is an enlarged view of a portion C in fig. 6;

FIG. 8 is a schematic diagram of a wedge snap ring;

FIG. 9 is a schematic view of a second mechanical connector according to the first embodiment of the utility model after plugging;

FIG. 10 is a schematic view of a first preform assembly according to a second embodiment of the present utility model;

Fig. 11 is a schematic diagram of a second prefabricated component assembly according to a second embodiment of the utility model.

In the accompanying drawings: a socket sleeve 1; a female cylinder 1a; a sub cylinder 1b; an inner cavity 11; a guide chamber section 111; an avoidance lumen segment 112; a stopper step 113; arc transition 114; a threaded cavity section 115; a clamping table 116; a threaded connection 117; a receiving cavity section 118; a plunger 2; a reducing plug 21; a wedge clasp 3; an arc wedge card 31a; an outer conical surface 31; a central through hole 32; a resisting portion 33; a slot 34; an elastic member 4; an elastic member 41; a support pad 42; a nut sleeve 5; a first tightening nut 6; a second tightening nut 7; a prefabricated member 100; a stress bar 101; a concrete body 102.

Detailed Description

In order to better understand the aspects of the present utility model, the present utility model will be described in further detail with reference to the accompanying drawings and detailed description.

In the present specification, the terms "upper, lower, inner, outer" and the like are established based on the positional relationship shown in the drawings, and the corresponding positional relationship may be changed according to the drawings, so that the terms are not to be construed as absolute limitation of the protection scope; moreover, relational terms such as "first" and "second", and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.

Example 1

As shown in fig. 1-3, the utility model provides a socket sleeve 1, which is provided with an inner cavity 11 which is axially penetrated, wherein a guide cavity section 111 and an avoidance cavity section 112 are sequentially formed at a preset depth of the inner cavity 11 from an cavity opening 12, the guide cavity section 111 is conical, the cavity diameter is gradually increased from the cavity opening 12 to the avoidance cavity section 112, a stop step 113 is formed between the avoidance cavity section 112 and the guide cavity section 111, and the stop step 113 is in arc transition 114 or inclined cone transition connection with the avoidance cavity section 112.

The utility model also provides a mechanical connector, as shown in fig. 1-9, comprising a plug rod 2 with a reducing plug connector 21, the socket sleeve 1, a wedge clamping ring 3 and an elastic component 4 which are arranged in the socket sleeve 1, wherein when the reducing plug connector 21 is inserted into an inner cavity 11 and the wedge clamping ring 3 is spread, the wedge clamping ring 3 slides forward along a guiding cavity section 111 and at least partially stretches into a avoiding cavity section 112 as shown in fig. 4 and 5; when the maximum diameter of the variable-diameter plug-in connector 21 passes over the wedge snap ring 3, the wedge snap ring 3 slides and gathers reversely along the guide cavity section 111 under the pushing action of the elastic component 4 so as to clamp the variable-diameter plug-in connector 21. The "forward direction" defined in the above description is the direction in which the insert pin 2 is inserted into the socket sleeve 1, and the "reverse direction" defined in the above description is the direction opposite to the "forward direction", that is, the direction in which the insert pin 2 is pulled out from the socket sleeve 1. Because the stop step 113 is formed between the avoidance cavity section 112 and the guide cavity section 111, the stop step 113 is in arc transition 114 or oblique cone transition connection with the avoidance cavity section 112, so that the avoidance cavity section 112 is further recessed outwards (i.e. away from the central axis of the inserted link 2 or the radial opening direction of the wedge clamp ring 3) relative to the stop step 113. The guide cavity section 111 and the avoidance cavity section 112 provide sliding space for sliding of the wedge clamping ring 3 together, under the condition that the size of the wedge clamping ring 3 and the size of the inserted link 2 are not changed, compared with the situation that the avoidance cavity section 112 is not arranged in the socket sleeve 1, the radial thickness of the guide cavity section 111 is only relied on for providing sliding space for sliding of the wedge clamping ring 3, so that the radial thickness of the guide cavity section 111 is reduced, the outer diameter of the socket sleeve 1 is reduced, the radial size of the elastic component 4 arranged in the socket sleeve 1 can be further reduced, the overall size of the mechanical connecting piece is reduced on the premise of ensuring the connection strength, the overall structural arrangement of the mechanical connecting piece is more compact, the situation that the corresponding mechanical connecting piece number cannot be configured due to the fact that the stress bars 101 on the end faces of the prefabricated component 100 are arranged densely is avoided, the reasonable arrangement of a sufficient number of the mechanical connecting pieces on the end faces of the prefabricated component 100 is facilitated, and the cost of parts can be reduced.

The circular arc transition 114 or the inclined cone transition connection between the stop step 113 and the avoidance cavity section 112 is beneficial to improving the structural strength of the socket sleeve 1, the inner diameter of the circular arc transition 114 or the inclined cone transition part is gradually increased along the forward direction, guiding and limiting can be provided for the reverse movement of the wedge clamping ring 3, and meanwhile, the movement of the wedge clamping ring 3 is not hindered.

Further, as shown in fig. 1-2, the socket sleeve 1 may be a split structure, where the socket sleeve 1 includes a main cylinder 1a and a sub cylinder 1b, the sub cylinder 1b is installed in the main cylinder 1a, the guiding cavity section 111 is disposed in the sub cylinder 1b and far from the cavity opening 12, and the avoiding cavity section 112 is disposed in the main cylinder 1a. The stop step 113 is at least partially located at the tail of the sub cylinder 1b, and the stop step 113 may be located only at the tail of the sub cylinder 1b, and of course, a part of the stop step 113 may also be located at the tail of the sub cylinder 1b, and another part of the stop step 113 may be located at the parent cylinder 1a. Under the condition that the size of the wedge clamping ring 3 and the size of the inserted link 2 are not changed, compared with the situation that the female barrel 1a is not provided with the avoidance cavity section 112, the radial thickness of the sub-barrel 1b is only relied on to provide a sliding space for sliding of the wedge clamping ring 3, the radial thickness of the sub-barrel 1b is reduced, the outer diameter of the female barrel 1a is reduced, the radial size of the elastic component 4 arranged in the female barrel 1a is reduced, and the overall size of the mechanical connecting piece is reduced on the premise of ensuring the connecting strength.

Further, the main cylinder 1a and the sub cylinder 1b may be connected and fixed by means of screw connection, clamping connection, welding, pin connection, bonding, etc. In this embodiment, the main cylinder 1a and the sub cylinder 1b are screwed, and the sub cylinder 1b is provided with a screwing part at one end near the cavity opening 12. An internal thread cavity section 115 is arranged at one end of the parent cylinder body 1a close to the cavity opening 12, an external thread matched with the internal thread cavity section 115 is arranged on the outer wall of the child cylinder body 1b, and preferably, the inner diameter of the avoidance cavity section 112 is larger than the maximum inner diameter of the internal thread cavity section 115. As shown in fig. 1, 5 and 11, the end of the inner cavity 11 away from the cavity opening 12 is shrunk inwards (opposite to the above mentioned "outwards") to form a clamping table 116, and the stress bar 101 of the prefabricated part 100 may be a steel bar with an upset at the end, and the clamping table 116 is used for clamping with the upset of the steel bar. In the assembly process, the elastic member 4 and the wedge clasp 3 can be firstly mounted on the main cylinder 1a from the cavity opening 12, and then the sub cylinder 1b can be screwed into the main cylinder 1a from the cavity opening 12 to a preset depth position by matching a screwing tool such as a spanner with the screwing part. In other embodiments, the stress rib 101 of the prefabricated part 100 may be a screw-thread steel, correspondingly, as shown in fig. 2, one end of the inner cavity 11 away from the cavity opening 12 is provided with a screw-thread connection portion 117 connected with the external screw thread of the screw-thread steel, in addition, the stress rib 101 of the prefabricated part 100 may be a steel strand, one end of the inner cavity 11 away from the cavity opening 12 is provided with a conical hole connected with the steel strand, and the conical hole is internally provided with a conical anchor for clamping the steel strand.

Further, as shown in fig. 3, the socket sleeve 1 may be in an integral structure, that is, the main cylinder 1a and the sub cylinder 1b are integrally formed, so that the step of installing the sub cylinder 1b in the later stage is omitted. To facilitate connection with the load-receiving rib 101 of the prefabricated component 100, the socket sleeve 1 is provided with a threaded connection 117 at its end remote from the cavity mouth 12 for external threaded connection with the load-receiving rib 101. In the assembly process, the elastic component 4 and the wedge clamping ring 3 are firstly installed to the socket sleeve 1 from one end far away from the cavity opening 12, and then the threaded part of the socket sleeve 1 is in threaded connection with the stress rib 101 of the prefabricated component 100. The socket sleeve 1 is of an integral structure or a split structure can be freely selected according to actual needs, and the utility model is not limited in any way.

Further, as shown in fig. 1-3, the inner cavity 11 is formed with a receiving cavity section 118 for receiving the elastic component 4, the receiving cavity section 118 is located at one side of the avoiding cavity section 112 away from the guiding cavity section 111, the inner diameter of the receiving cavity section 118 is smaller than that of the avoiding cavity section 112, and the receiving cavity section 118 is in arc transition or oblique cone transition connection with the avoiding cavity section 112. The inner diameter of the accommodating cavity section 118 is smaller than that of the avoiding cavity section 112, which is beneficial to limiting the radial movement of the elastic component 4 and avoiding deflection in the movement process of the elastic component 4. Avoid the grooving to female barrel 1a inside transition, under the condition that satisfies wedge snap ring 3 expansion removal size, guarantee socket joint sleeve 1 self structural strength.

Further, as shown in fig. 5, 7 and 8, the wedge clasp 3 has a central through hole 32 for inserting the reducing spigot 21, one end of the wedge clasp 3 near the guiding cavity section 111 has an outer conical surface 31 adapted to the guiding cavity section 111, one end of the wedge clasp 3 near the elastic member 4 protrudes radially outwards to form a resisting part 33, the resisting part 33 is connected with the outer conical surface 31 at an obtuse angle, and the resisting part 33 can axially abut against the stop step 113. When the maximum diameter of the variable-diameter plug-in connector 21 passes over the wedge snap ring 3, the wedge snap ring 3 slides reversely along the guide cavity section 111 under the pushing action of the elastic component 4 to clamp the variable-diameter plug-in connector 21, the resisting part 33 is axially abutted with the stop step 113, so that the radial sliding of the wedge snap ring 3 in the clamping state can be effectively prevented, and the wedge snap ring 3 is ensured to be connected with the plug rod 2 reliably. Preferably, the ratio of the axial dimension h1 of the resisting part 33 to the axial dimension h2 of the whole wedge-shaped snap ring 3 is 0.1-0.2, so that the resisting part 33 is prevented from being damaged by stress due to the over-thin axial dimension, and the pulling resistance of the mechanical connector is improved.

Further, the wedge clasp 3 may be an integral structure or a split structure before use, when the wedge clasp 3 is an integral structure (not shown), the wedge clasp 3 includes at least two arc wedge cards arranged at intervals along the circumferential direction, the two adjacent arc wedge cards are connected through a breakable connection portion, the breakable connection portion is used for connecting the outer sides and/or the bottoms of the two adjacent arc wedge cards, in order to ensure that the wedge clasp 3 can be broken smoothly by external force, the wall thickness of the breakable connection portion is extremely small, if the wall thickness can be designed to be smaller than 0.1cm, further, the height value of the breakable connection portion is extremely small, if the height value can be designed to be smaller than 0.1 times of the maximum height value of the arc wedge cards. The variable-diameter plug-in connector 21 of the plug rod 2 is inserted into and passes through the central through hole 32, the variable-diameter plug-in connector 21 extrudes the arc-shaped wedge card of the wedge clamping ring 3 to damage the breakable connection part, and after the wedge clamping ring 3 is split into a plurality of arc-shaped wedge cards, each arc-shaped wedge card is contracted under the pushing action of the elastic component 4 to reversely clamp the variable-diameter plug-in connector 21. The wedge snap ring 3 is convenient for install when being an integral structure to wedge snap ring 3 can erect on elastomeric element 4 steadily, when inserted bar 2 applys axial thrust and/or keep away from the radial thrust of the central axis of socket joint 2 to wedge snap ring 3, can avoid inserted bar 2 to tip or push away wedge snap ring 3, in order to guarantee grafting success rate and resistance to plucking intensity.

Further, as shown in fig. 8, when the wedge-shaped snap ring 3 is of a split structure, the wedge-shaped snap ring 3 includes at least two arc-shaped wedge-shaped cards 3a spliced into a ring shape along the circumferential direction, and the number of the arc-shaped wedge-shaped cards 3a may be two or three or four or more than four, and the specific number is selected according to actual needs.

In addition to the two wedge clasp 3 structures listed above, the wedge clasp 3 may also be an integrally formed clasp structure (not shown), and the cross-sectional shape of the wedge clasp 3 is C-shaped.

Further, as shown in fig. 5, the inner wall of the wedge-shaped clamping ring 3 near one end of the guiding cavity section 111 is provided with a cutting groove 34, the cutting groove 34 can extend from the top end to the top end of the arc-shaped wedge-shaped clamping piece 3a, or the cutting groove 34 is only positioned at the top end of the arc-shaped wedge-shaped clamping piece 3a, so that the thickness of the arc-shaped wedge-shaped clamping piece 3a is reduced, and the insertion of the inserting rod 2 is facilitated under the condition that the whole size of the wedge-shaped clamping ring 3 is not influenced.

Further, a groove (not shown) is formed in the outer wall or the inner wall of the wedge clamping ring 3, and an elastic ring is accommodated in the groove, so that the whole wedge clamping ring 3 is elastic and can be expanded or contracted in the radial direction, and the clamping stability of the wedge clamping ring 3 and the inserted link 2 is improved. Further, the inner wall of the wedge clasp 3 is provided with annular latch teeth or screw teeth to improve the biting force between the arc wedge card 3a and the variable diameter plug 21, thereby preventing the variable diameter plug 21 from being pulled out. To improve the locking effect, the outer wall of the diameter-variable plug-in connector 21 is provided with a locking step or locking tooth (not shown) which forms a locking connection with the annular locking tooth or the thread tooth.

Further, the outer wall and/or the inner wall of the wedge clasp 3 are/is provided with strength weakening grooves (not shown, the cross section of the strength weakening grooves is arc-shaped or triangular or trapezoidal or cross-shaped or I-shaped or quincuncial, so that the wedge clasp 3 is easier to radially expand and contract under the action of external force, when the wedge clasp 3 is of a split structure, each arc-shaped wedge clasp 3a can be provided with strength weakening grooves, when the wedge clasp 3 is of an integral structure, the inner wall or the outer wall of the wedge clasp 3 can be provided with a plurality of strength weakening grooves at intervals along the circumferential direction, and the strength weakening grooves can be communicated or not communicated with the central through hole 32.

Further, as shown in fig. 6, the elastic member 4 includes an elastic member 41 and a support pad 42 disposed at one end of the elastic member 41 near the wedge clip 3, where the wedge clip 3 is pressed against the support pad 42, and the elastic member 41 may be a spring, or may be an elastic element such as an elastic ball, an elastic block, an elastic strip, or an elastic cylinder. The supporting pad 42 can be in a cylinder shape, the outer wall of the upper end of the supporting pad can be provided with an outwards extending supporting part, the supporting part is used for supporting the wedge clamp ring 3, the wedge clamp ring 3 is prevented from falling off in the inserting process, the end part of the elastic piece 41 is sleeved outside the supporting pad 42 and can abut against the lower end face of the supporting portion, the elastic piece 41 is positioned, and the elastic piece 41 and the supporting pad 42 are in a split structure. In addition, the elastic member 41 and the support pad 42 can be fixedly connected with the elastic member 41 by welding, bonding, clamping, hooping and the like to form an integrated structure, so that the assembly is convenient. Of course, the elastic member 4 may include only the elastic member 41, and the wedge ring 3 may be pressed against the elastic member 41 without including the support pad 42. The elastic member 41 may be a cylindrical elastic pad made of an elastic material (e.g., rubber, silicone, etc.); of course, the elastic member 41 may be a spring, such as a common cylindrical bolt spring, a conical coil spring, a belleville spring, a rubber spring, etc., and the elastic member 41 may be formed by stacking two or more kinds of springs listed above in the axial direction in order to enhance the elastic supporting effect of the elastic member 41.

Further, as shown in fig. 6 and 9, the mechanical connector further includes a nut sleeve 5, an end portion of the insert rod 2 away from the reducing plug connector 21 is in threaded connection with the nut sleeve 5, one end of the nut sleeve 5 is connected with the stress rib 101 of the prefabricated component 100, and a connection mode between the nut sleeve 5 and the stress rib 101 refers to a connection mode between the socket sleeve 1 and the stress rib 101, which is not described herein.

Further, as shown in fig. 9, the mechanical connecting piece may further include a first tightening nut 6, where the first tightening nut 6 is screwed with the insert rod 2 to abut against an end surface of the nut sleeve 5 near one end of the socket sleeve 1, so as to eliminate a thread gap between the insert rod 2 and the nut sleeve 5, and avoid axial displacement of the mechanical connecting piece caused by the thread gap when the mechanical connecting piece is pulled or pressed, so that the connection precision of the mechanical connecting piece can be improved, and the tensile and compression performances of the mechanical connecting piece are ensured. The mechanical connection may further comprise a second tightening nut 7, the second tightening nut 7 being screwed with the insert rod 2 so as to be able to abut against an end face of the socket sleeve 1 at the end remote from the elastic member 4. The second tightening nut 7 can avoid the axial displacement of the inserted link 2 caused by compression in the compressed state, and the compression resistance of the connecting piece is improved.

< Example two >

In this embodiment, the same reference numerals are given to the same parts as those of the first embodiment, and the same description is omitted.

As shown in fig. 10 to 11, in addition to the above-described connection members, the present utility model also provides a preform assembly including at least two preform members 100, the two preform members 100 being butted by a mechanical connection member as in the first embodiment. The two prefabricated components 100 which are in butt joint can be the same type of prefabricated components 100, such as one of prefabricated piles, prefabricated columns, prefabricated walls, prefabricated beams and prefabricated plates, or can be two different types of prefabricated components 100, such as one prefabricated component 100 is a prefabricated pile, the other prefabricated component 100 is a prefabricated bearing platform or other types of prefabricated plates and the like, and each prefabricated component 100 comprises a concrete body 102 with a built-in rigid framework, wherein the rigid framework is provided with a plurality of stress ribs 101 distributed in an array; and at least part of the number of the stress ribs 101 in one prefabricated part 100 are fixedly connected with the socket sleeve 1 at one end, at least part of the number of the stress ribs 101 in the other prefabricated part 100 are fixedly connected with the nut sleeve 5 at the other end, the other end of the inserted link 2 is fixedly connected with the nut sleeve 5 through external threads in a threaded manner, the middle sleeve, the wedge clamping ring 3 and the elastic component 4 are arranged in the socket sleeve 1, and the two prefabricated parts 100 are firmly connected through the clamping fit between the variable-diameter plug connector 21 and the wedge clamping ring 3 of the inserted link 2. As shown in fig. 10, when the mechanical connector of the present utility model is used for butt-jointing two precast piles, the socket sleeve 1 and the nut sleeve 5 are both pre-buried in the precast piles, and when the precast piles are produced, the socket sleeve 1 and the nut sleeve 5 are partially wrapped by the concrete body 102. As shown in fig. 11, when the mechanical connector of the present utility model is used for butt-jointing two prefabricated components 100 of an assembled building, for example, butt-jointing two prefabricated walls, one ends of the stress bars 101 of the two prefabricated walls extend out of the prefabricated walls, and when the butt-jointing is required, the socket sleeve 1 and the nut sleeve 5 are screwed with the extending ends of the stress bars 101, and besides the screwed connection mode, the mechanical connector can of course also be fixedly connected by welding or grouting connection or by other modes, that is, the socket sleeve 1 and the nut sleeve 5 are completely positioned outside the prefabricated walls.

The socket sleeve, the mechanical connector and the prefabricated component combination provided by the utility model are described in detail above. The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the core concepts of the utility model. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.

Claims (10)

1. The socket sleeve is provided with an inner cavity which is axially communicated, and is characterized in that an adjacent guiding cavity section and an avoidance cavity section are sequentially formed at a preset depth of the inner cavity from an cavity opening, the guiding cavity section is conical, the cavity diameter is gradually increased from the cavity opening to the avoidance cavity section, a stop step is formed between the avoidance cavity section and the guiding cavity section, and the stop step is in arc transition or oblique cone transition connection with the avoidance cavity section.

2. The socket sleeve of claim 1 wherein said socket sleeve includes a female barrel and a male barrel, said male barrel being mounted within said female barrel;

The guide cavity section is arranged on the sub-cylinder body and far away from the cavity opening, and the avoidance cavity section is arranged on the parent cylinder body.

3. The socket sleeve of claim 2 wherein said stop step is at least partially located at the tail of said sub-cylinder;

And/or the main cylinder body is in threaded connection with the sub cylinder body, and a screwing part is arranged at one end of the sub cylinder body, which is close to the cavity opening.

4. A mechanical connector, comprising:

A spigot with a variable diameter spigot;

a socket sleeve according to any one of claims 1 to 3; and

A wedge snap ring and an elastic component which are arranged in the socket sleeve;

When the reducing plug connector is inserted into the inner cavity and the wedge clamping ring is spread, the wedge clamping ring slides forward along the guide cavity section and at least partially stretches into the avoidance cavity section; when the maximum diameter of the reducing plug connector passes through the wedge clamping ring, the wedge clamping ring slides reversely along the guide cavity section to gather under the pushing action of the elastic component so as to clamp the reducing plug connector.

5. The mechanical connector of claim 4, wherein the interior cavity defines a receiving cavity section for receiving the resilient member, the receiving cavity section being located on a side of the evacuation cavity section remote from the guide cavity section, the receiving cavity section having an inner diameter less than an inner diameter of the evacuation cavity section.

6. The mechanical connector of claim 4, wherein an end of the wedge collar adjacent to the guide cavity section has an outer conical surface adapted to the guide cavity section, and an end of the wedge collar adjacent to the elastic member protrudes radially outwardly to form a retaining portion, the retaining portion being in obtuse angle connection with the outer conical surface, the retaining portion being axially abuttable against the stop step.

7. The mechanical connector of claim 4, wherein the wedge clasp is of unitary construction, the wedge clasp comprising at least two arcuate wedge tabs circumferentially spaced apart, adjacent ones of the arcuate wedge tabs being connected by a breakable connection; or the wedge clamping ring is of a split structure, and comprises at least two arc wedge clamping pieces spliced into a ring shape along the circumferential direction; or the cross section shape of the wedge clamping ring is C-shaped;

And/or the inner wall of one end of the wedge clamping ring, which is close to the guide cavity section, is provided with a cutting groove;

And/or, the outer wall or the inner wall of the wedge clamping ring is provided with a groove, and the groove is provided with an elastic ring in a holding way;

And/or the inner wall of the wedge clamping ring is provided with annular clamping teeth or thread teeth;

and/or the outer wall and/or the inner wall of the wedge clamping ring are/is provided with strength weakening grooves, and the cross section of each strength weakening groove is arc-shaped, triangular, trapezoidal, cross-shaped, I-shaped or quincuncial.

8. The mechanical connector of claim 4, wherein the elastic member comprises an elastic member and a support pad disposed at one end of the elastic member near the wedge-shaped snap ring, the wedge-shaped snap ring being pressed against the support pad; or the elastic component comprises an elastic piece, and the wedge clamping ring is pressed on the elastic piece.

9. The mechanical connector of claim 4, further comprising a nut sleeve and a first tightening nut, an end of the spigot distal from the reducing spigot being in threaded engagement with the nut sleeve, the first tightening nut being in threaded engagement with the spigot so as to be capable of abutting against an end face of the nut sleeve proximal to an end of the spigot;

And/or, the socket sleeve further comprises a second tightening nut which is in threaded connection with the inserted rod so as to be abutted against the end face of the socket sleeve, which is far away from one end of the elastic component.

10. Prefabricated component combination, its characterized in that includes: at least two prefabricated parts, two of said prefabricated parts being butted by a mechanical connection according to any of claims 4-9.