Slot assembly applied to prefabricated part, connecting device, prefabricated part assembly and prefabricated part

Abstract

The utility model discloses a slot assembly applied to a prefabricated part. The slot assembly comprises a first connector, a stop sleeve, an elastic device and a clamping ring. The first connector is provided with a mounting hole, and the stop sleeve is arranged in the mounting hole and connected with an internal thread on the hole wall of the mounting hole in a matched mode. One end of the clamping ring abuts against the stop sleeve through an inclined face to guide the clamping ring to expand outwards so as to expand the bayonet, and the other end of the clamping ring abuts against the elastic device to prevent the clamping ring from expanding outwards. The internal thread is arranged on the first wall part; a groove is formed between the inner wall of the second wall part and the adjacent end walls of the first wall part and the third wall part; the groove has a radial depth and an axial length so that the outer side portion of at least part of the split part of the clamping ring can enter the groove in the connecting process, and an outward-expanding movable area is provided for the clamping ring. The problem of poor compactness of the slot assembly of the connecting device can be effectively solved. The utility model further discloses a connecting device and a prefabricated part comprising the slot assembly, and a prefabricated part assembly comprising the connecting device.

Description

TECHNICAL FIELD

[0001] The utility model relates to the prefabricated component field more specifically, relate to a kind of slot subassembly applied to prefabricated component, and further relate to a kind of connecting device comprising above-mentioned slot subassembly;Further relate to a kind of prefabricated component subassembly comprising above-mentioned connecting device;Further relate to a kind of prefabricated component comprising above-mentioned slot subassembly. BACKGROUND

[0002] When concrete prefabricated pile and other concrete prefabricated components are connected, connecting device capable of being inserted can be used.

[0003] As shown in Figure 1 It is a typical connecting device cross section structure schematic diagram.This kind of connecting device includes plug-in assembly and slot subassembly, plug-in assembly includes plug-in base fixed in prefabricated component and plug-in 1' extended outside, slot subassembly includes nut joint 2', stop piece 3', spring 4' and snap ring 5' fixed in prefabricated component.Nut joint 2' inner orifice part inner wall forms internal thread, wherein the outer side wall of stop piece 3' forms external thread, so that stop piece 3' is inserted into the inner hole of nut joint 2', and is connected by the cooperation of the above-mentioned internal thread and external thread to realize threaded connection.Spring 4' and snap ring 5' are sequentially arranged in the inner hole of nut joint 2'.Under the elastic force of spring 4', snap ring 5' is supported at the stop position of the lower end of stop piece 3', and the insertion end of plug-in 1' includes shrinkage part 11' and big head part 12', wherein the diameter of big head part 12' is greater than the diameter of shrinkage part 11', when plug-in 1' is inserted into the slot through stop piece 3', big head part 12' pushes snap ring 5' to move downward and radially expand at the same time to overcome the elastic force of spring 4', when the maximum diameter part of big head part 12' passes snap ring 4', so that shrinkage part 11' is located at snap ring 5', snap ring 5' is reset upward and radially shrinks under the elastic force of spring 4', and forms a necked position at the lower end of stop piece 3', so as to prevent big head part 12' of plug-in 1' from being pulled out of the slot, and realize quick connection.The end of nut joint 2' away from stop piece 3', i.e., the lower end, forms a connecting neck, for connecting reinforcing member 6' or other rod members to transmit tension between each other.

[0004] The above-mentioned connecting device has comprehensive requirements for tensile strength, pullout resistance and manufacturing cost in actual application.

[0005] Through the long-term practice of the inventor, it is found that the existing connecting device still has the problem of not compact structure, resulting in large size and high cost. UTILITY MODEL CONTENT

[0006] Therefore, the first object of the utility model is to provide a slot assembly applied to a prefabricated component, which can effectively solve the problem of poor compactness of the slot assembly of the connecting device, the second object of the utility model is to provide a connecting device comprising the slot assembly, the third object of the utility model is to provide a prefabricated component assembly comprising the connecting device, and the fourth object of the utility model is to provide a prefabricated component comprising the slot assembly.

[0007] In order to achieve the first object, the utility model provides the following technical scheme.

[0008] A slot assembly applied to a prefabricated component, comprising a first connector, a stop sleeve, an elastic device and a snap ring, the first connector has a mounting hole, the stop sleeve is installed in the mounting hole and is connected with internal threads on the hole wall of the mounting hole, one end of the snap ring is abutted with the stop sleeve through an inclined surface to guide the snap ring to expand outward to expand the bayonet, the other end of the snap ring is abutted on the elastic device to prevent the snap ring from expanding outward, the mounting hole is sequentially provided with a first wall part, a second wall part and a third wall part along the axial direction, the internal threads are arranged on the first wall part, the inner diameter of the second wall part is larger than the inner diameter of the first wall part and the inner diameter of the third wall part, so that the inner wall of the second wall part and the adjacent end walls between the first wall part and the third wall part form a groove, the groove has a radial depth and an axial length, so that the outer side of at least part of the split piece of the snap ring can enter the groove during the connection process, and the snap ring is provided with an expansion movement area.

[0009] Through the above-mentioned groove, when the plug is inserted during use, the head end of the plug acts on the snap ring to push the snap ring to expand outward from the retracted state to the expanded state, and during the expansion process, the outer side of the snap ring increases compared to the center distance to move outward, and the outer side of the snap ring has a certain movement space in the groove to avoid through the groove. If there is no groove, the overall hole wall of the mounting hole needs to satisfy the space requirement of the expansion of the snap ring, which will cause the inner and outer walls of the first connector to increase in diameter, and accordingly, the outer diameter of the stop sleeve may also increase, and even the outer diameter of the plug may increase. Because the groove is arranged, the inner wall of the second wall part can move inward, so the overall outer wall of the first connector can move inward, and the distance from the center is smaller, so that the overall size is smaller, and accordingly, other structures can be adaptively smaller, so that the overall structure is more compact, and the cost is better reduced. In summary, the slot assembly can effectively solve the problem of poor compactness of the slot assembly of the connecting device.

[0010] In some embodiments, the recess is circumferentially annularly arranged; and the first wall portion and the third wall portion are both arranged to be inclined to gradually approach the inner wall of the second wall portion.

[0011] In some embodiments, the outer walls of the first wall portion, the second wall portion and the third wall portion are coaxially arranged and have equal outer diameters.

[0012] In some embodiments, the female thread extends to the recess.

[0013] In some embodiments, the third wall portion is further provided with a fourth wall portion at an end away from the recess, the inner hole diameter of the fourth wall portion is smaller than that of the third wall portion, so that the end wall of the fourth wall portion protrudes from the inner wall of the third wall portion to form a support shoulder; one end of the elastic device abuts against the support shoulder, and the other end is used to support the snap ring.

[0014] In some embodiments, the fourth wall portion is throughly arranged at both ends, and an external connecting rod penetrating port is formed at an end away from the third wall portion, so that the external connecting rod can penetrate into the inner hole formed by the third wall portion; the inner hole diameter of the elastic device is not less than the inner hole diameter of the fourth wall portion, so as to accommodate the head of the external connecting rod.

[0015] In some embodiments, a support body is further included, which is connected between the elastic device and the snap ring; the outer contour of the snap ring in the contracted state is aligned with the outer diameter of the support body; and the inner hole diameter of the support body is greater than the inner hole diameter of the snap ring in the expanded state.

[0016] In some embodiments, the mounting hole is provided with a counter sunk groove at the hole opening; the end of the stop sleeve is provided with an external flange to be located in the counter sunk groove and abut against the bottom of the counter sunk groove; the outer end surface of the stop sleeve is provided with a screwdriver groove; and the external flange is provided with notches on opposite sides.

[0017] In some embodiments, the inner end of the stop sleeve is provided with an expanded hole inclined surface to abut against the corresponding abutting inclined surface of the snap ring to guide the radial movement and circumferential movement of the snap ring during the expansion process.

[0018] To achieve the above-mentioned second purpose, the utility model also provides a kind of connecting device, the connecting device includes the plug-in slot component of any one described above, including plug-in component, the plug of the plug-in component can be connected in the snap ring of the plug-in slot component;The head end maximum diameter of the plug is not greater than the inner hole diameter of the snap ring in the hole expansion state to be able to cross snap ring, and greater than the inner hole diameter of the snap ring in the shrinkage state to realize the connection of the plug-in component with the plug-in slot component is achieved.The connecting device with the plug-in slot component should also have corresponding technical effects due to the technical effects of the plug-in slot component described above.

[0019] In some technical solutions, a first locking nut and a second locking nut are further included, the plug-in component includes a plug rod and a second connector, one end of the plug rod has the plug, and the other end has a threaded column to cooperate with a threaded hole of the second connector;The first locking nut is sleeved on the plug rod and cooperates with the plug rod to be able to abut with the first connector of the plug-in slot component;The second locking nut is sleeved on the plug rod and cooperates with the plug rod to be able to abut with the second connector;The plug rod is provided with a square column segment, and the square column segment is located between the first locking nut and the second locking nut.

[0020] To achieve the above-mentioned third purpose, the utility model further provides a prefabricated component assembly, which includes any one of the connecting devices described above, and includes at least two prefabricated components, among the at least two prefabricated components: one is provided with the plug-in component of the connecting device, and the other is provided with the plug-in slot component of the connecting device. The prefabricated component assembly with the connecting device should also have corresponding technical effects due to the technical effects of the connecting device described above.

[0021] To achieve the above-mentioned fourth purpose, the utility model further provides a prefabricated component, which includes any one of the plug-in slot components described above, and includes a prefabricated body, and the first connector of the plug-in slot component is embedded in the prefabricated body and exposed. The prefabricated component with the plug-in slot component should also have corresponding technical effects due to the technical effects of the plug-in slot component described above. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating labor.

[0023] Figure 1 It is a typical connecting device axial cross-sectional structure schematic view of cross-sectional structure schematic view;

[0024] Figure 2 The axial section structure schematic view of the connection device at the insertion slot when the split piece is located at the second position is provided for the utility model embodiment;

[0025] Figure 3 The axial section structure schematic view of the connection device at the insertion slot when the split piece is located at the first position is provided for the utility model embodiment;

[0026] Figure 4 The axial section structure schematic view of the connection device at the insertion slot when the split piece is located at the second position is provided for the utility model embodiment;

[0027] Figure 5 The axial section structure schematic view of the first joint is provided for the utility model embodiment;

[0028] Figure 6 The three-dimensional structure schematic view of the positioning snap ring is provided for the utility model embodiment;

[0029] Figure 7 The section schematic view of the positioning snap ring is provided for the utility model embodiment;

[0030] Figure 8 The three-dimensional structure schematic view of the stop sleeve is provided for the utility model embodiment;

[0031] Figure 9 The section structure schematic view of the stop sleeve is provided for the utility model embodiment;

[0032] Figure 10 The section structure schematic view of the connection device is provided for the utility model embodiment;

[0033] Figure 11 The structure schematic view of the connection device is provided for the utility model embodiment.

[0034] The marks in the drawings are as follows:

[0035] Insertion slot assembly 100, plug assembly 200;

[0036] First joint 1-1, stop sleeve 1-2, elastic device 1-3, snap ring 1-4, support body 1-5;

[0037] First wall portion 1-11, second wall portion 1-12, third wall portion 1-13, fourth wall portion 1-14, internal thread 1-15, support shoulder 1-16, countersunk groove 1-17, recess 1-18, mounting hole 1-19;

[0038] Outer flange 1-21, screwdriver groove 1-22, notch 1-23, counterbore inclined surface 1-24;

[0039] Split piece 1-41, outer side 1-42, abutting inclined surface 1-43, bayonet 1-44;

[0040] Support platform 1-51, guide cylinder 1-52;

[0041] Plug 2-1, second joint 2-2, first locking nut 2-3, second locking nut 2-4, plug rod 2-5;

[0042] Head end 2-11, contraction part 2-12;

[0043] Square column segment 2-51. DETAILED DESCRIPTION

[0044] The utility model discloses an application for prefabricated component's socket assembly, with the plug assembly of connecting device cooperation, to realize after splicing locking, and the locking mode is mainly through the snap ring contraction in socket assembly, to hold the plug. The socket assembly provided among them, the difference lies in: the joint (for the convenience of distinguishing other joints, called first joint) inside socket assembly, reaming to form the recess, to at least make in the snap ring outer expansion to guide the plug insertion process, the transverse lateral part of snap ring can enter recess, to realize containing. Because setting recess, to contain the snap ring part structure of outer expansion state, can make the structure more compact.

[0045] The technical scheme in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0046] Please refer to Figures 2-11 : Figure 2 The axial section structure schematic drawing of the socket assembly applied to the prefabricated component provided in the embodiments of the utility model is shown in the drawings. Figure 3 The axial section structure schematic drawing of the connecting device at the socket when the split piece is located at the first position provided in the embodiments of the utility model is shown in the drawings. Figure 4 The axial section structure schematic drawing of the connecting device at the socket when the split piece is located at the second position provided in the embodiments of the utility model is shown in the drawings. Figure 5 The axial section structure schematic drawing of the first joint provided in the embodiments of the utility model is shown in the drawings. Figure 6 The three-dimensional structure schematic drawing of the positioning snap ring provided in the embodiments of the utility model is shown in the drawings. Figure 7 The section schematic drawing of the positioning snap ring provided in the embodiments of the utility model is shown in the drawings. Figure 8 The three-dimensional structure schematic drawing of the stop sleeve provided in the embodiments of the utility model is shown in the drawings. Figure 9The utility model discloses a cross section structure schematic drawing of stop sleeve is provided for the embodiment. Figure 10 The utility model discloses a cross section structure schematic drawing of connecting device is provided for the embodiment. Figure 11 The utility model discloses a structure schematic drawing of connecting device is provided for the embodiment.

[0047] In some embodiments, the provided slot assembly 100 mainly includes a first connector 1-1, a stop sleeve 1-2, an elastic device 1-3, and a split clasp 1-4.

[0048] The clasp 1-4 can also be referred to as a positioning split clasp. The clasp 1-4 has a plurality of split pieces 1-41 that are sequentially combined to form an annular structure to surround a clamping opening 1-44. The clasp 1-4 can have three split pieces 1-41, four split pieces 1-41, five split pieces 1-41, or more split pieces 1-41. The split pieces 1-41 generally have an arc structure to form a circular ring structure. In this case, the central angles of the split pieces 1-41 are equal, and the sum is 360 degrees or close to 360 degrees. For example, the clasp 1-4 can include four split pieces 1-41. In this case, the central angles of the split pieces 1-41 are equal and close to 90 degrees or 90 degrees. This facilitates the formation of a gap between adjacent split pieces 1-41. The clasp 1-4 can include six split pieces 1-41. In this case, the central angles of the split pieces 1-41 are equal and close to 60 degrees or 60 degrees. Of course, other arrangements are also possible.

[0049] When the split pieces 1-41 move away from the center, i.e., radially outward, to expand the intermediate clamping opening 1-44, when the split pieces 1-41 move to the first position, the clasp 1-4 is in an expanded state. In this case, the plug 2-1 can move in the insertion direction and the head end 2-11 can pass through the clamping opening 1-44. When the split pieces 1-41 move from the first position to the center, i.e., radially inward, to make the intermediate clamping opening 1-44 smaller again, when the split pieces 1-41 move to the second position, the clasp 1-4 is in a contracted state. In this case, the contracted portion 2-12 of the plug 2-1 is tightly held or the plug 2-1 is axially limited to prevent the plug 2-1 from being detached in the reverse direction of the insertion direction.

[0050] In the process of connecting: initially, the socket 1-44 is in a contracted state, at this time the split pieces 1-41 can be in the second position or not in the second position, such as on the side away from the first position to be more close to the center position; with the plug 2-1 inserted, the split pieces 1-41 around are pushed to move away from the center to make the socket 1-44 in the middle expand, when the split pieces 1-41 enter the first position, at this time the socket 1-44 is equal to the maximum diameter of the head end 2-11 of the plug 2-1, at this time the head end 2-11 can continue to move in the insertion direction; when the head end 2-11 passes through the socket 1-44, at this time the socket 1-44 is no longer limited by the head end 2-11 inside, but can move radially inward under the guidance of the elastic device 1-3 and the inclined surface to move to the second position, the socket 1-44 contracts to realize the limiting of the plug 2-1, preventing the plug 2-1 from being detached in the reverse direction along the insertion direction.

[0051] The first connector 1-1 has a mounting hole 1-19, wherein the stop sleeve 1-2, the clamping ring 1-4 and the elastic device 1-3 are sequentially arranged in the mounting hole 1-19 along the axial direction. The stop sleeve 1-2 is arranged in the mounting hole 1-19, the outer wall of the stop sleeve 1-2 has external threads, and the hole wall of the mounting hole 1-19 has internal threads 1-15, the internal and external threads are matched to realize the fixed connection of the stop sleeve 1-2 and the first connector 1-1.

[0052] The other end of the clamping ring 1-4 abuts against the elastic device 1-3 to prevent the clamping ring 1-4 from expanding outward. This makes the use that when the plug 2-1 is inserted, although the plug 2-1 only moves along the axial direction, it needs to push away each split piece 1-41, so that the combined thrust of the axial direction and the radial direction is generated on the clamping ring 1-4, under the thrust, because of the limiting of the elastic device 1-3 and the guidance of the inclined surface, the split piece moves obliquely relative to the axis during the movement to the first position, that is, it has axial movement and radial movement at the same time, the radial movement can make the socket 1-44 expand, and the axial movement can promote the elastic deformation of the elastic device 1-3. The head end 2-11 forms a reverse support on the split piece 1-41, and the clamping ring 1-4 can always abut against the stop sleeve 1-2 during the movement.

[0053] When the head end 2-11 passes through the notch 1-44, the split part 1-41 is no longer supported by the head end 2-11, and under the deformation force of the elastic device 1-3, the split part 1-41 is pushed to move from the first position in the direction of restoring the deformation of the elastic device 1-3, i.e. in the axial direction, and moves radially inward to make the notch 1-44 smaller, until it moves to the second position, at which point the split part 1-41 cannot continue to move, but the notch 1-44 is smaller than the maximum cross-sectional area of the head end 2-11, so that the plug 2-1 cannot be separated. At this time, the reason why the split part 1-41 cannot continue to move: it can be because the split part 1-41 abuts against the contraction part 2-12 and cannot move further; it can also be because the adjacent split parts 1-41 abut against each other and cannot move further towards the center; it can also be limited by other structures.

[0054] The first wall part 1-11, the second wall part 1-12 and the third wall part 1-13 are arranged in sequence along the axial direction, and the inner thread 1-15 is arranged on the inner wall of the first wall part 1-11, i.e. the first wall part 1-11 and the stop sleeve 1-2 are fixedly connected to enable axial force transmission, i.e. force transmission in the plug-in direction. The third wall part 1-13 is used to connect other structures.

[0055] The inner diameter of the second wall part 1-12 is larger than the inner diameter of the first wall part 1-11 and the inner diameter of the third wall part 1-13, so that the inner wall of the second wall part 1-12 and the adjacent end walls of the first wall part 1-11 and the third wall part 1-13 form a groove 1-18, i.e. the second wall part 1-12 constitutes the groove bottom of the groove 1-18, and the end walls of the first wall part 1-11 and the third wall part 1-13 constitute the groove walls on both sides of the groove 1-18. The groove 1-18 can be an arc-shaped groove 1-18, or the groove 1-18 can be arranged in a circumferential ring shape.

[0056] The groove 1-18 has a radial depth and an axial length, so that at least part of the radial outer side 1-42 of the split part 1-41 of the clamping ring 1-4 can enter the groove 1-18 to provide an outwardly movable area for the clamping ring 1-4. Specifically, the diameter of the cylindrical surface where the groove bottom of the groove 1-18 is located, i.e. the inner wall diameter D2 of the second wall part 1-12, should be not less than the maximum cross-sectional diameter Dt of the head end 2-11 of the plug 2-1 plus the radial width Wd of the split part 1-41, i.e. D2≥Dt+2Wd, preferably D2>Dt+2Wd, so that the clamping ring 1-4 has a certain accommodation gap, i.e. a deviation gap.

[0057] Wherein the split part 1-41 needs to move between the first position and the second position. When the split part 1-41 is in the first position, the distance between the outer side (the farthest outer side) of the split part 1-41 and the axis is Dt / 2+Wd (n / 2 represents half of n, n is any value such as Dt, Ds, etc.); when the split part 1-41 is in the second position, if the inner side of the split part 1-41 abuts against the contraction part 2-12, the distance between the outer side (the farthest outer side) of the split part 1-41 and the axis is Ds / 2+Wd, wherein Ds is the diameter of the contraction part 2-12 of the plug 2-1, and the radial movement length of the split part 1-41 during the expansion is (Dt-Ds) / 2. The axial movement range is related to the angle between the inclined surface and the axis. If the angle is 45 degrees, the axial movement length of the split part 1-41 from the first position to the second position is (Dt-Ds) / 2.

[0058] When the split part 1-41 is in the second position, the outer side part 1-42 of the split part 1-41 can enter the groove 1-18 or be located outside the groove 1-18. The specific size should be set according to the required structure. When the split part 1-41 is in the second position: if the outer side part 1-42 of the split part 1-41 enters the groove 1-18, the radial depth of the groove 1-18 should be greater than (Dt-Ds) / 2, and the axial length is set according to the inclination angle and the groove depth; if the outer side part 1-42 of the split part 1-41 is located outside the groove 1-18, the radial depth of the groove 1-18 can be less than (Dt-Ds) / 2, but considering that a gap needs to be reserved, the radial depth of the groove 1-18 can be equal to or greater than (Dt-Ds) / 2, and the axial length is set according to the inclination angle and the groove depth. As shown in the drawings, the distance between the outer side (the farthest outer side) of the split part 1-41 and the axis when the split part 1-41 is in the second position can be equal to the inner hole radius of the first wall part 1-11, so as to correspond to the strength of the stop sleeve 1-2. When the first wall part 1-11 has an internal thread 1-15, the thread crest radius of the internal thread 1-15 is the above-mentioned inner hole radius. The size of (Dt-Ds) / 2 also needs to consider the strength of the plug 2-1 and other related factors.

[0059] Through the above-mentioned groove 1-18, this makes that in the use process, when the plug 2-1 is inserted, the head end 2-11 of the plug 2-1 acts on the clamping ring 1-4 to push the clamping ring 1-4 to expand from the retracted state to enter the expanded state, and in the process of expanding, the outer side 1-42 of the clamping ring 1-4 increases the distance from the center to move outward, and in the process of moving outward, the outer side 1-42 of the clamping ring 1-4 has a certain activity space in the groove 1-18 to avoid through the groove 1-18. If there is no groove 1-18, the hole wall of the mounting hole 1-19 needs to satisfy the space requirement of the expansion of the clamping ring 1-4, which will cause the diameter of the inner and outer walls of the first connector 1-1 to increase, and accordingly, the outer diameter of the stop sleeve 1-2 may also increase, and even the outer diameter of the plug 2-1 may increase. Because the groove 1-18 is provided, the inner wall of the second wall 1-12 can move inward, so the overall outer wall of the first connector 1-1 can move inward, and the distance from the center is smaller, so that the overall size is smaller, and accordingly, some other structures can be adaptively smaller, so that the overall structure is more compact, and the cost is better reduced. In summary, the plug slot assembly 100 can effectively solve the problem of poor compactness of the plug slot assembly 100 of the connecting device.

[0060] Further, in the plug slot assembly 100 provided, the first wall 1-11 is provided with an internal thread 1-15 structure to form a matched connection with the stop sleeve 1-2 to achieve support. Because the internal thread 1-15 structure may weaken the support strength, it means that the provision of the groove 1-18 does not affect the overall force transmission, especially within the allowable range of the groove depth of the groove 1-18.

[0061] In some embodiments, considering that the force needs to be transmitted through the second wall 1-12 between the first wall 1-11 and the third wall 1-13, in order to improve the reliability of force transmission, the adjacent end walls of the first wall 1-11 and the third wall 1-13 can be inclined to gradually approach the inner wall of the second wall 1-12 in the extension direction, so that the groove 1-18 gradually decreases in groove width along the groove depth direction. Specifically, the adjacent end walls of the first wall 1-11 and the third wall 1-13 can be inclined at an angle of 30 degrees to 60 degrees, such as 45 degrees, and are oppositely arranged.

[0062] In some embodiments, the outer walls of the first wall 1-11, the second wall 1-12 and the third wall 1-13 can be coaxially arranged and have equal outer diameters, such as the outer wall of the first connector 1-1 can be a cylindrical side surface, and the diameters of the outer side surfaces in the axial direction are equal.

[0063] In some embodiments, the inner thread 1-15 can be extended to the groove 1-18 at one end, and the length of the inner thread 1-15 can be increased to ensure the connection strength between the stop sleeve 1-2 and the first joint 1-1, and the inner thread 1-15 can be formed so that the groove 1-18 can also serve as a tool withdrawal groove of the inner thread 1-15.

[0064] In some embodiments, the third wall portion 1-13 can be provided with a fourth wall portion 1-14 at one end away from the groove 1-18, wherein the inner hole diameter of the fourth wall portion 1-14 is smaller than that of the third wall portion 1-13, so that the end wall of the fourth wall portion 1-14 protrudes from the inner wall of the third wall portion 1-13 to form a support shoulder 1-16; and wherein one end of the elastic device 1-3 abuts against the support shoulder 1-16, and the other end is used to support the clamping ring 1-4. That is, during installation, the elastic device 1-3 can be placed into the inner hole formed by the third wall portion 1-13, the lower end is supported by the support shoulder 1-16, and the upper end directly or indirectly abuts against the clamping ring 1-4. As described below, indirect abutment can be achieved by the support body 1-5.

[0065] The outer wall diameter of the fourth wall portion 1-14 is preferably equal to that of the third wall portion 1-13, and of course can also be different.

[0066] In some embodiments, the inner hole formed by the fourth wall portion 1-14 can serve as a connection hole for external connection, such as for the passage of a steel bar head. Specifically, the fourth wall portion 1-14 can be provided with through holes at both ends, and an external connecting rod can pass through the inner hole formed by the fourth wall portion 1-14 to enter the inner hole formed by the third wall portion 1-13, and the inner hole diameter of the elastic device 1-3 is not less than the inner hole diameter of the fourth wall portion 1-14 to accommodate the head of the external connecting rod. At this time, the head of the external connecting rod can also abut against the support shoulder 1-16 to transmit tension.

[0067] In use, the force transmission of the plug 2-1 and the external connecting rod, and the force of the external connecting rod, will sequentially pass through the support shoulder 1-16, the third wall portion 1-13, the second wall portion 1-12, the first wall portion 1-11, the threaded pair on the first wall portion 1-11, the stop sleeve 1-2, and the clamping ring 1-4, and then be transmitted to the plug 2-1; the clamping ring 1-4 transmits the force by abutting against the stop sleeve 1-2 and the plug 2-1.

[0068] In some embodiments, in order to facilitate the force transmission between the elastic device 1-3 and the clasp 1-4, a support body 1-5 is preferably further included, wherein the support body 1-5 is connected between the elastic device 1-3 and the clasp 1-4. Specifically, the support body 1-5 can include a support platform 1-51 and a guide cylinder 1-52, wherein the corresponding end of the first elastic device 1-3 is sleeved on the guide cylinder 1-52, and the end surface is abutted with the lower side of the support platform 1-51, and the upper side of the support platform 1-51 is abutted with the clasp 1-4, that is, the clasp 1-4 is placed on the upper side of the support platform 1-51. The support platform 1-51 and the guide cylinder 1-52 are preferably integrally connected.

[0069] The outer contour of the maximum outer diameter of the clasp 1-4 in the contracted state is aligned with the outer diameter of the support body 1-5, that is, when the split part 1-41 of the clasp 1-4 is in the second position, the outer edge of the maximum cross section of the clasp 1-4 is aligned with the outer contour of the support platform 1-51. The inner hole diameter of the support body 1-5 is greater than the inner hole diameter of the clasp 1-4 in the expanded state. That is, the outer side diameter of the support platform 1-51 can be equal to Ds+2Wd, and the inner hole diameter of the support platform 1-51 is greater than Dt; the inner hole of the support platform 1-51 and the inner hole of the guide cylinder 1-52 are coaxially arranged and have the same diameter to be located on the same extension plane.

[0070] In some embodiments, the mounting hole 1-19 forms a counterbore groove 1-17 at the hole opening, and the end of the stop sleeve 1-2 forms an outer flange 1-21 to be located in the counterbore groove 1-17 and abutted with the groove bottom of the counterbore groove 1-17, so as to be arranged through the counterbore groove 1-17, so that the stop sleeve 1-2 can be abutted with the first joint 1-1 in the axial direction, and does not interfere with the abutment between the end surface of the first joint 1-1 and the first locking nut.

[0071] Further, the outer end surface of the stop sleeve 1-2 can have a screwdriver groove 1-22, which is generally a slot, to facilitate the application of torque by a flat-head screwdriver. Further, in order to facilitate operation, the outer flange 1-21 can be formed with notches 1-23 on the opposite sides, to facilitate the application of torque by the hands. Of course, the outer flange 1-21 can also be formed with six notches 1-23 to form a hexagonal screw head.

[0072] Specifically, the first joint 1-1 can be configured from one end to the other end, wherein the counterbore groove 1-17, the first wall portion 1-11, the second wall portion 1-12, the third wall portion 1-13, and the fourth wall portion 1-14 are sequentially arranged, such as sequentially arranged from top to bottom in the drawing. The counterbore groove 1-17 and the fourth wall portion 1-14 are respectively located at two ends of the first joint 1-1, such as the former belongs to the upper end of the first joint 1-1, and the latter belongs to the lower end of the first joint 1-1. The cavity of the counterbore groove 1-17, the inner hole formed by the first wall portion 1-11, the inner hole formed by the second wall portion 1-12, the inner hole formed by the third wall portion 1-13, and the inner hole formed by the fourth wall portion 1-14 are sequentially combined to form the mounting hole 1-19, and the mounting hole 1-19 is arranged through from one end to the other end.

[0073] Further, the inner end of the stop sleeve 1-2 can be configured with a counterbore chamfer 1-24, which cooperates with the abutting chamfer 1-43 corresponding to the clamping ring 1-4 to abut, so as to guide the radial movement and axial movement of the clamping ring 1-4 during the outward expansion process. The inclination angle of the chamfer can be 30 degrees, 45 degrees, 60 degrees, etc. Preferably, the inclination angle is between 30 degrees and 60 degrees. The inner end of the stop sleeve 1-2 refers to the end close to the third wall portion 1-13.

[0074] The radial length of the counterbore chamfer 1-24 is preferably not less than Dt-Ds, so that the split part 1-41 moves to the first position and the second position, and the abutting chamfer 1-43 and the counterbore chamfer 1-24 always maintain a close relationship, and only the relative positional relationship changes along the extension direction of the chamfer.

[0075] The inner hole diameter Dz of the stop sleeve 1-2 is not less than Dt (the maximum cross-sectional radius of the head end 2-11), so that the head end 2-11 can pass through the inner hole of the stop sleeve 1-2.

[0076] In order to ensure the strength, the abutting chamfer 1-43 is preferably extended from one axial end face of the clamping ring 1-4 to the other end face, such as from the upper end face to the lower end face in the drawing. The width of the upper end face of the split part 1-41, that is, the distance between the radial outer edge and the radial inner edge of the upper end face of the split part 1-41, should be greater than 0 to ensure the strength of the upper end. Specifically, the radial distance between the upper edge of the abutting chamfer 1-43 and the inner hole wall of the clamping ring 1-4 can be equal to (Dz-Ds) / 2.

[0077] Based on the slot assembly 100 provided in the above embodiments, the utility model also provides a connecting device, the connecting device includes any one of the slot assembly 100 in the above embodiments, also includes plug 2-1 assembly 200, the plug 2-1 of plug 2-1 assembly 200 can be connected in the snap ring 1-4 of slot assembly 100, the head end 2-11 of plug 2-1 The maximum diameter is not greater than the inner hole diameter of the snap ring 1-4 in the reaming state to be able to cross the snap ring 1-4, and greater than the inner hole diameter of the snap ring 1-4 in the contraction state to realize the connection. Since the connecting device uses the slot assembly 100 in the above embodiments, the beneficial effects of the connecting device please refer to the above embodiments.

[0078] Each split piece 1-41 is in the first position, that is, the snap ring 1-4 is in the reaming state; each split piece 1-41 is in the second position, that is, the snap ring 1-4 is in the contraction state. In use, the plug 2-1 is inserted into the stop sleeve 1-2 from the upper end of the stop sleeve 1-2 to the inside of the stop sleeve 1-2 until it abuts against the snap ring 1-4, and then the plug 2-1 continues to move axially downward, at which time the plug 2-1 abuts against the upper part of the snap ring 1-4 to push the snap ring 1-4 to move along the inclined surface, that is, the split piece 1-41 forms radial outward movement and axial downward movement, and in the process of axial downward movement, the elastic device 1-3 is pushed to elastically deform to compress the elastic device 1-3, and in the process of movement of the split piece 1-41, the outer side 1-42 of part of the split piece 1-41 enters the groove 1-18 to move smoothly. Until the head end 2-11 of the plug 2-1 enters the socket 1-44 of the snap ring 1-4, at which time the split piece 1-41 is in the first position and remains in the first position until the head end 2-11 exceeds the socket 1-44, at which time the contraction part 2-12 enters the socket 1-44, and the split piece 1-41 moves radially inward and axially upward under the push of the elastic device 1-3 until the socket 1-44 is reduced to abut against the contraction part 2-12, at which time the split piece 1-41 is in the second position.

[0079] The general connecting device is also provided with a first and second tightening nut 2-3 and 2-4. The plug 2-1 assembly 200 includes a plug rod 2-5 and a second connector 2-2, wherein one end of the plug rod 2-5 has a plug 2-1, and the other end has a threaded column to cooperate with the threaded hole of the second connector 2-2. The first and second tightening nut 2-3 is sleeved on the plug rod 2-5 and threadedly cooperates with the plug rod 2-5 to abut against the first connector 1-1 of the slot assembly 100, that is, after the plug 2-1 is inserted to complete the installation, the first and second tightening nut 2-3 is tightened, at which time the plug rod 2-5 can be directly transmitted to the first connector 1-1 by the first and second tightening nut 2-3 when it is subjected to the force in the insertion direction, so that the overall structure is more compact.

[0080] The second locking nut 2-4 is sleeved on the plug rod 2-5 and cooperates with the plug rod 2-5 to abut against the second connector 2-2; the plug rod 2-5 is provided with a square column section 2-51, which is a square column or a hexagonal column, so that the plug rod 2-5 is rotated relative to the second connector 2-2 by applying torque by a wrench, and when the first connector 1-1 and the second connector 2-2 are fixed relative to each other, the axial relative position of the plug rod 2-5 and the first connector 1-1 is adjusted to ensure that the plug 2-1 and the snap ring 1-4 abut in the axial direction, and then the first nut and the second nut are rotated in sequence; and the square column section 2-51 is located between the first locking nut 2-3 and the second locking nut 2-4 to facilitate operation.

[0081] In use, for two prefabricated components to be connected, the first connector 1-1 is pre-buried in one of the prefabricated components and connected to the steel bar therein, and at this time the steel bar serves as the external rod; and the second connector 2-2 is pre-buried in the other prefabricated component to be connected to the steel bar therein.

[0082] Based on the connecting device provided in the above embodiment, the utility model also provides a prefabricated component assembly, which comprises the connecting device in any one of the above embodiments and at least two prefabricated components, wherein one of the at least two prefabricated components is provided with the plug assembly 200 of the connecting device, and the other is provided with the slot assembly 100 of the connecting device. Since the prefabricated component assembly adopts the connecting device in the above embodiment, the beneficial effects of the prefabricated component assembly are as described in the above embodiment.

[0083] It should be noted that the prefabricated component can be a prefabricated pile, a prefabricated wall or other two prefabricated components to be connected. The prefabricated pile can be a square pipe pile, a T-shaped pile or the like. The two prefabricated components to be connected can be connected in an up-down manner or in a horizontal direction.

[0084] For the two prefabricated components to be connected, one of the sides opposite to each other is provided with the slot assembly 100, and the other is provided with the plug assembly 200.

[0085] Generally, in order to improve the continuous connection effect, the plug assembly 200 is arranged at one end of the prefabricated component, and the slot assembly 100 is arranged at the other end. For example, a prefabricated component can be provided, one end of which is pre-buried with the second connector 2-2, and the other end is pre-buried with the first connector 1-1. For example, for the prefabricated component connected in an up-down manner, the upper end is provided with the first connector 1-1, and the lower end is provided with the second connector 2-2, wherein the longitudinal bars at both ends are connected to the first connector 1-1 and the second connector 2-2, respectively.

[0086] As provided, a prefabricated component assembly, at least two prefabricated components spliced up and down, generally the upper side of the lower prefabricated component is provided with a socket assembly 100, and the lower side of the upper prefabricated component is provided with a plug assembly 200.

[0087] Based on the socket assembly provided in the above embodiments, the utility model also provides a prefabricated component, which comprises any one of the socket assemblies 100 in the above embodiments, and further comprises a prefabricated body, and the first joint of the socket assembly is embedded in the prefabricated body and exposed. Since the prefabricated component assembly adopts the socket assembly in the above embodiments, the beneficial effects of the prefabricated component assembly are referred to the above embodiments.

[0088] The prefabricated body of the prefabricated component, the main part of the prefabricated component, for a reinforced concrete prefabricated component, wherein the prefabricated body mainly comprises a reinforced part and a concrete part. The socket assembly is embedded in the concrete part and exposed, so that the plug assembly can be connected.

[0089] As described above, the first joint 1-1 of the socket assembly 10 is embedded in the concrete part of the prefabricated body and connected to the longitudinal reinforcement of the internal reinforced part.

[0090] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0091] The above description of the disclosed embodiments enables those skilled in the art to implement or use the utility model. Various modifications to the embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A socket assembly applied to a prefabricated component, comprising a first joint (1-1), a stop sleeve (1-2), an elastic device (1-3) and a snap ring (1-4); the first joint (1-1) has a mounting hole (1-19), the stop sleeve (1-2) is fitted into the mounting hole (1-19) and is connected with the internal thread (1-15) on the hole wall of the mounting hole (1-19); one end of the snap ring (1-4) is in abutment with the stop sleeve (1-2) through a slope to guide the snap ring (1-4) to expand outward to expand the snap opening (1-44), and the other end of the snap ring (1-4) is in abutment with the elastic device (1-3) to prevent the snap ring (1-4) from expanding outward; characterized in that, the mounting hole (1-19) is sequentially provided with a first wall portion (1-11), a second wall portion (1-12) and a third wall portion (1-13) along the axial direction, the internal thread (1-15) is arranged on the first wall portion (1-11), the inner diameter of the second wall portion (1-12) is larger than the inner diameters of the first wall portion (1-11) and the third wall portion (1-13), so that a groove (1-18) is formed between the inner wall of the second wall portion (1-12) and the adjacent end walls of the first wall portion (1-11) and the third wall portion (1-13), the groove (1-18) has a radial depth and an axial length, so that at least part of the outer side portion (1-42) of the split part (1-41) of the snap ring (1-4) can enter the groove (1-18) during connection, and the snap ring (1-4) is provided with an active area for outward expansion, the groove (1-18) is arranged in a circumferential annular shape, and the adjacent end walls of the first wall portion (1-11) and the third wall portion (1-13) are both arranged in an inclined manner, gradually approaching the extension direction of the inner wall of the second wall portion (1-12), the outer walls of the first wall portion (1-11), the second wall portion (1-12) and the third wall portion (1-13) are coaxially arranged, and the outer diameters thereof are equal, one end of the internal thread (1-15) extends to the groove (1-18), the third wall portion (1-13) is further provided with a fourth wall portion (1-14) at the end away from the groove (1-18), the inner diameter of the fourth wall portion (1-14) is smaller than the inner diameter of the third wall portion (1-13), so that the end wall of the fourth wall portion (1-14) protrudes from the inner wall of the third wall portion (1-13) to form a supporting shoulder (1-16), one end of the elastic device (1-3) is in abutment with the supporting shoulder (1-16), and the other end of the elastic device (1-3) is used to form a support for the snap ring (1-4), the fourth wall portion (1-14) is provided with a through hole at both ends, and the end away from the third wall portion (1-13) forms an external connecting rod insertion opening, so that the external connecting rod can be inserted into the inner hole formed by the third wall portion (1-13), and the inner hole diameter of the elastic device (1-3) is not less than the inner hole diameter of the fourth wall portion (1-14), so as to accommodate the head of the external connecting rod. ​ ​ ​ 2. The socket assembly of claim 1, wherein, ​ 3. The socket assembly of claim 2, wherein, ​ 4. The socket assembly of claim 3, wherein, ​ 5. The socket assembly of claim 4, wherein, ​ 6. The socket assembly of claim 5, wherein, ​ 7. The socket assembly of claim 6, wherein, Further comprising a support body (1-5) connected between the elastic device (1-3) and the snap ring (1-4), the outer profile of the snap ring (1-4) in the contracted state is aligned with the outer diameter of the support body (1-5); the inner hole diameter of the support body (1-5) is larger than the inner hole diameter of the snap ring (1-4) in the expanded state.

8. The socket assembly of any of claims 1-7, wherein, The mounting hole (1-19) forms a counterbore groove (1-17) at the hole opening, the end of the stop sleeve (1-2) forms an outer flange (1-21) to be located in the counterbore groove (1-17) and abut against the bottom of the counterbore groove (1-17); the outer end surface of the stop sleeve (1-2) has a screwdriver groove (1-22), and the opposite sides of the outer flange (1-21) respectively form notches (1-23).

9. The socket assembly of claim 8, wherein, The inner end of the stop sleeve (1-2) forms an expansion inclined surface (1-24) which cooperates with the abutting inclined surface (1-43) of the snap ring (1-4) to guide the radial and circumferential movement of the snap ring (1-4) during expansion.

10. A connection device comprising a plug assembly (200), characterized in that The plug assembly (200) is capable of being clamped in the snap ring (1-4) of the socket assembly (100); the maximum diameter of the head end (2-11) of the plug (2-1) of the plug assembly (200) is not greater than the inner hole diameter of the snap ring (1-4) in the expanded state so as to be capable of passing through the snap ring (1-4), and is greater than the inner hole diameter of the snap ring (1-4) in the contracted state to achieve clamping.

11. The connection device according to claim 10, characterized in that Further comprising a first and second locking nut (2-3, 2-4), the plug assembly (200) comprises a plug rod (2-5) and a second connector (2-2), one end of the plug rod (2-5) has the plug (2-1), and the other end has a threaded column to cooperate with the threaded hole of the second connector (2-2); the first locking nut (2-3) is sleeved on the plug rod (2-5) and threadedly cooperates with the plug rod (2-5) to be capable of abutting against the first connector (1-1) of the socket assembly; the second locking nut is sleeved on the plug rod (2-5) and threadedly cooperates with the plug rod (2-5) to be capable of abutting against the second connector (2-2); the plug rod (2-5) is provided with a square column segment (2-51) located between the first and second locking nuts (2-3, 2-4).

12. A precast component assembly comprising at least two precast components, characterised in that, Further comprising the connecting device according to any one of claims 10-11, at least two of the prefabricated components are provided with the plug assembly (200) and the socket assembly (100) of the connecting device to achieve splicing.

13. A preform comprising a preform body, characterized by, Further comprising the socket assembly (100) according to any one of claims 1-8, the first connector of the socket assembly (100) is embedded in the prefabricated body and exposed.

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