Steel strand connecting sleeve

Abstract

The utility model provides a steel strand connecting sleeve. The steel strand connecting sleeve comprises a steel strand connecting sleeve body and a converter which are detachably connected. The steel strand connecting sleeve is provided with a containing cavity penetrating through the steel strand connecting sleeve along the axis, and a clamping piece set is coaxially arranged in the containing cavity. The clamping piece set comprises a plurality of clamping pieces arranged along the axis of the clamping piece set, and protruding teeth used for clamping steel strands are arranged on the sides, close to the axis of the clamping piece set, of the clamping pieces. A first threaded hole is formed in the end, away from the steel strand connecting sleeve, of the converter. The sleeve is of a split structure, when the sleeve is connected with the deformed steel bars with different diameters, only the converter needs to be replaced, and the adaptability of the sleeve to the deformed steel bars with different diameters is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to threaded steel connecting device technical field, especially a steel strand connecting sleeve. BACKGROUND

[0002] The steel strand and threaded steel connection is a common connection scene in the building field, especially in the prestressed concrete structure, the threaded steel needs to be fixedly connected to one end of the steel strand during subsequent construction.

[0003] In order to solve the problem of steel strand and threaded steel connection, the prior art adopts an integrated sleeve for connection, but the integrated sleeve has small application range when connecting, and the sleeve needs to be replaced as a whole when connecting threaded steel of different diameters. INVENTION CONTENTS

[0004] The utility model discloses a kind of steel strand connecting sleeves for the defects in the above-mentioned technology, sleeve adopts split structure, facilitate operation, and improve the adaptability of sleeve and threaded steel of different diameters.

[0005] The utility model discloses a kind of steel strand connecting sleeves for the defects in the above-mentioned technology, sleeve adopts split structure, facilitate operation, and improve the adaptability of sleeve and threaded steel of different diameters.

[0006] The steel strand connecting sleeve is provided with a receiving cavity penetrating the steel strand connecting sleeve along the axis, and a clamping piece group is coaxially arranged in the receiving cavity; the clamping piece group includes a plurality of clamping pieces arranged along the axis thereof, and the clamping piece is provided with a convex tooth on the side close to the axis of the clamping piece group for clamping the steel strand.

[0007] The end of the converter away from the steel strand connecting sleeve is provided with a first threaded hole.

[0008] In the above-mentioned scheme, the steel strand connecting sleeve and the converter are detachably connected, the steel strand is clamped and fixed by the locking piece group in the steel strand connecting sleeve, and the threaded steel is connected by the converter. When connecting threaded steel of different diameters, the converter can be replaced, thereby improving the adaptability of the sleeve and the threaded steel of different diameters. When the steel strand connecting sleeve is connected with the converter, the rotation of the steel strand connecting sleeve can be reduced or avoided, thereby improving the stability of the connection between the sleeve and the steel strand and the threaded steel. The connection length can be compensated by the connection between the steel strand connecting sleeve and the converter, so that the connection length is adjustable, thereby improving the flexibility of the connection and facilitating the operation.

[0009] In some possible embodiments, the steel strand connecting sleeve and the converter are connected by threads.

[0010] In some possible embodiments, a first tapered surface is arranged in the receiving cavity of the steel strand connecting sleeve, and the diameter of the first tapered surface gradually decreases in the direction away from the converter.

[0011] The second conical surface is arranged outside the clamp group and corresponds to the first conical surface.

[0012] The first conical surface is in abutment with the second conical surface.

[0013] In some possible embodiments, the accommodating cavity of the steel strand connecting sleeve is provided with a ring platform at one end away from the converter, and the inner diameter of the ring platform is smaller than the outer diameter of the clamp group.

[0014] In some possible embodiments, the steel strand connecting sleeve is externally provided with a first wrench platform.

[0015] In some possible embodiments, the clamp group is externally provided with a ring groove.

[0016] Further comprising an elastic member, which is elastically sleeved in the ring groove.

[0017] In some possible embodiments, the converter is provided with a second threaded hole at one end for connecting the steel strand connecting sleeve, and is provided with a first threaded hole at the other end for connecting the threaded steel, and the first threaded hole is coaxially arranged with the second threaded hole.

[0018] In some possible embodiments, the converter is externally provided with a second wrench platform.

[0019] In some possible embodiments, further comprising an elastic stopper, which is used for elastically sleeving the end of the steel strand close to the converter. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is an exploded view of the connecting sleeve of the present application;

[0021] Figure 2 is a sectional view of the connecting sleeve of the present application;

[0022] Figure 3 is a schematic view of the connecting mode of the connecting sleeve of the present application connecting the steel strand and the threaded steel. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application, and are not used to limit the present application.

[0024] To facilitate the understanding of the steel strand connecting sleeve provided by the embodiments of the present application, the application scenarios thereof are first described. The steel strand connecting sleeve of the present application is mainly used for connecting the steel strand and the threaded steel, especially in prestressed concrete structures. In the prestressed concrete structures, the bearing capacity and durability of the structure are enhanced by applying prestress. In subsequent construction, the threaded steel needs to be fixedly connected to one end of the steel strand. The steel strand connecting sleeve of the present application is mainly used for connecting the steel strand and the threaded steel. In the present application, a split sleeve is used to connect the steel strand and the threaded steel. The first threaded hole of the converter can be provided with multiple specifications of threads. When connecting threaded steels with different diameters, the converter can be replaced, thereby improving the adaptability of the connecting sleeve to threaded steels with different diameters.

[0025] Referring to 1, Figure 2 The connecting sleeve of the present application comprises a detachably connected steel strand connecting sleeve 1 and a converter 2. It can be known that the connecting sleeve in the present application is a split sleeve. The connecting mode of the steel strand connecting sleeve 1 and the converter 2 can be through threaded connection, that is, the end portions of the steel strand connecting sleeve 1 and the converter 2 are processed with threads, and the connection is realized by directly screwing the threads. This mode is simple and reliable, and is easy to disassemble and replace. It can also be connected through a rivet, such as the steel strand connecting sleeve 1 and the converter 2 are riveted through a rivet. Or through a buckle connection, that is, the steel strand connecting sleeve 1 and the converter 2 are connected through a buckle mechanism.

[0026] In the present application, the steel strand connecting sleeve 1 is used to connect the steel strand 6, and the converter 2 is used to connect the threaded steel 7. In order to realize the quick connection of the steel strand connecting sleeve 1 and the steel strand 6, the steel strand connecting sleeve 1 in the present application is provided with an accommodating cavity 11 penetrating through the steel strand connecting sleeve 1 along the axis, and a clamping piece group 3 is coaxially arranged in the accommodating cavity 11. The clamping piece group 3 comprises a plurality of clamping pieces 31 arranged along the axis thereof, and the clamping piece 31 is provided with a protruding tooth 311 for clamping the steel strand 6 on the side close to the axis of the clamping piece group 3. When the clamping piece group 3 is gathered towards the axis thereof by external force, the protruding tooth 311 is forced to embed into the surface of the steel strand 6, thereby forming clamping of the steel strand 6. Then, the clamping piece group 3 is axially and radially limited by the steel strand connecting sleeve 1, and the fixed connection of the steel strand 6 is completed.

[0027] As an example, the number of clamping pieces 31 constituting the clamping piece group 3 in the present application can be 2, 3, 4, etc., and the structure of each clamping piece is the same. When used, a plurality of clamping pieces 31 embrace the outside of the steel strand 6, and a gap is provided between adjacent two clamping pieces when embracing the outside of the steel strand 6. By pressing the clamping pieces 31, the protruding teeth 311 of the clamping pieces 31 are embedded into the surface of the steel strand 6 to a certain depth, and then the clamping piece group 3 is radially limited, so that the clamping piece group 3 forms stable clamping of the steel strand 6.

[0028] The converter 2 is connected with the threaded steel 7 by threads in the application. Specifically, the converter 2 is provided with a first threaded hole 21 at one end away from the steel strand connecting sleeve 1. In order to be connected with the first threaded hole 21, external threads are needed to be machined at the end of the threaded steel 7. When connected, the external threads of the threaded steel 7 are connected with the first threaded hole 21, so as to realize the fixed connection between the converter 2 and the threaded steel 7. Then the steel strand connecting sleeve 1 is connected with the converter 2, so as to realize the stable connection between the steel strand 6 and the threaded steel 7. Multiple specifications of the converter 2 can be provided, and the difference between the converters 2 of different specifications lies in that the first threaded hole 21 is provided with threads of different specifications. When connecting threaded steels of different diameters, the converter 2 can be replaced, so as to improve the adaptability of the connecting sleeve to threaded steels of different diameters.

[0029] In the above scheme, the steel strand connecting sleeve 1 and the converter 2 are detachably connected, the steel strand 6 is clamped and fixed by the locking piece group in the steel strand connecting sleeve 1, and the threaded steel 7 is connected by the converter 2. The first threaded hole 21 of the converter 2 can be provided with multiple specifications of threads, and when connecting threaded steels of different diameters, the converter 2 can be replaced, so as to improve the adaptability of the connecting sleeve to threaded steels of different diameters. In addition, when the steel strand connecting sleeve 1 is connected with the converter 2, the rotation of the steel strand connecting sleeve 1 can be reduced or avoided, and the stability of the connection between the sleeve and the steel strand 6 and the threaded steel 7 is improved.

[0030] In some optional embodiments, the steel strand connecting sleeve 1 and the converter 2 are connected by threads. In the application, the steel strand connecting sleeve 1 and the converter 2 are connected by threads for the convenience of use, an internal thread is arranged at one end of the sleeve, and an external thread is correspondingly arranged at the other end of the sleeve, so that the steel strand connecting sleeve 1 and the converter 2 are connected by threads.

[0031] The steel strand connecting sleeve 1 and the converter 2 are connected by threads, which is convenient for operation during construction, and the length of the connection between the steel strand 6 and the threaded steel 7 can be compensated by the length of the threads. In addition, when stored and transported, the steel strand connecting sleeve 1 and the converter 2 are connected by threads, other components are arranged in the two sleeves, and the sleeve can be stored and transported in a complete set, which is convenient for disassembly during use.

[0032] In some optional embodiments, referring to Figure 2 , the accommodating cavity 11 of the steel strand connecting sleeve 1 is provided with a first tapered surface 111, and the first tapered surface 111 gradually decreases in diameter in the direction away from the converter 2. The outer part of the clamping piece group 3 is provided with a second tapered surface 312 corresponding to the first tapered surface 111, and the first tapered surface 111 and the second tapered surface 312 abut.

[0033] In the present application, the first tapered surface 111 of the steel strand connecting sleeve 1 abuts against the second tapered surface 312 of the clamping piece group 3. After the steel strand 6 is connected with the clamping piece group 3, the protruding teeth 311 of the clamping piece group 3 will be clamped on the surface of the steel strand 6. The movement tendency of the steel strand 6 is to move out of the steel strand connecting sleeve 1. Through the cooperation of the two tapered surfaces, as the steel strand 6 moves away from the steel strand connecting sleeve 1, the clamping piece group 3 will move towards the end of the containing cavity 11 with smaller diameter, so that the protruding teeth 311 of the clamping piece group 3 are embedded in the steel strand 6 with greater depth, and the connection is more stable.

[0034] In some optional embodiments, referring to Figure 2 In order to prevent the clamping piece group 3 from being pulled out of the containing cavity 11, the end of the containing cavity 11 of the steel strand connecting sleeve 1 away from the converter 2 is provided with a ring table 12, and the inner diameter of the ring table 12 is smaller than the outer diameter of the clamping piece group 3. This can prevent the clamping piece group 3 from being pulled out or partially pulled out of the containing cavity 11 due to processing errors and other reasons, and can improve the stability of the hard connection. The ring table 12 can be integrally arranged with the steel strand connecting sleeve 1 or separately arranged.

[0035] In some optional embodiments, the steel strand connecting sleeve 1 is externally provided with a first wrench table 13, and the first wrench table 13 comprises a plurality of planes or is circular. When the planes are arranged, the planes are matched with a wrench. As an example, the radial cross section of the first wrench table 13 can be a regular hexagon, a regular octagon or the like. The first wrench table 13 is matched with a wrench, which facilitates disassembly. When the first wrench table 13 is circular, the circular wrench table is matched with a pipe wrench, and the circular wrench table is more convenient to process and can save costs.

[0036] In some optional embodiments, the clamping piece group 3 is externally provided with a ring groove 32, and further comprises a resilient member 4, which is elastically sleeved on the ring groove 32. The resilient member 4 can gather the plurality of clamping pieces of the clamping piece group 3 together through the elastic force of the resilient member 4, which facilitates installation and prevents the clamping piece group 3 from being scattered in the containing cavity 11,

[0037] As an example, the resilient member 4 in the present application can be a rubber ring or an O-ring or the like component with a certain elasticity. The rubber ring is sleeved on the outer circle of the clamping piece group 3, and the rubber ring is positioned by the ring groove 32 on the outer side of the clamping piece group 3.

[0038] In some optional embodiments, the converter 2 is provided with a second threaded hole 22 at one end for connecting with the steel strand connecting sleeve 1, and the second threaded hole 22 is connected with the external thread on the steel strand connecting sleeve 1. The other end of the converter 2 is provided with a first threaded hole 21 for connecting with the threaded steel 7, and the first threaded hole 21 is coaxially arranged with the second threaded hole 22, so as to ensure the coaxiality of the threaded steel 7 and the sleeve after the threaded steel 7 is connected with the steel strand 6.

[0039] As an example, in the present application, the second threaded hole 22 is arranged in communication with the first threaded hole 21. The diameter of the second threaded hole 22 is greater than that of the first threaded hole 21, so that the threaded steel 7 can be inserted into the second threaded hole 22 to a certain length. When the threaded steel 7 is inserted into the second threaded hole 22 and further abuts against the end of the steel strand 6, the threaded steel 7 can provide a pre-tightening force to the steel strand 6, so that the clip set 3 is stably clamped outside the steel strand 6.

[0040] In some optional embodiments, the converter 2 is externally provided with a second wrench platform 23, which includes a plurality of planes or is circular. When the planes are arranged, the planes are matched with the wrench. As an example, the radial section of the second wrench platform 23 can be a regular hexagon, a regular octagon, etc. The second wrench platform 23 is matched with the wrench, which facilitates disassembly. When the second wrench platform 23 is circular, the circular wrench platform is matched with the pipe wrench, and the circular wrench platform is more convenient to process and saves cost.

[0041] In some optional embodiments, an elastic baffle 5 is further included, which is used to elastically sleeve the end of the steel strand 6 close to the converter 2. As an example, the elastic baffle 5 can be a rubber ring with an inner hole smaller than the outer diameter of the steel strand 6. When the ring is sleeved on the end of the steel strand 6, the ring is fixed on the end of the steel strand 6 through its own elasticity, preventing the steel strand 6 from being pulled out of the clip set 3.

[0042] Reference Figure 3 The use mode of the connecting sleeve of the present application is described. First, the steel strand 6 is inserted into the accommodating cavity 11 of the steel strand connecting sleeve 1, the clip set 3 is fixed on the end of the steel strand 6 through the elastic member 4, and the elastic baffle 5 is sleeved on the end of the steel strand 6 close to the converter 2 to complete the preliminary connection of the steel strand connecting sleeve 1 and the steel strand 6. Then, the threaded steel 7 is connected with the converter 2 through threads, and the converter 2 is connected with the steel strand connecting sleeve 1 through threads; or the converter 2 is connected with the steel strand connecting sleeve 1 through threads first, and then the threaded steel 7 is connected with the converter 2 through threads. In the present application, the sleeve is divided into two parts, and when connecting threaded steels 7 with different diameters, only the converter 2 needs to be replaced, so that the connection operation of the steel strand 6 and the threaded steel 7 is more flexible, and the connection effect is stable and reliable.

[0043] In the description of the utility model, it is necessary to explain, the term "center", "upper", "lower", "left", "right", "vertical", "horizontal", "internal", "external" and so on indicate the orientation or positional relationship is based on the orientation or positional relationship shown in the drawing, is only for the convenience of describing the utility model and simplifying the description, and is not indicating or implying that the device or element indicated must have a particular orientation, is constructed and operated in a particular orientation, therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0044] In the description of the utility model, it is necessary to explain, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be broadly understood, for example, can be fixed connection, can also be detachable connection, or integrally connected;Can be mechanical connection, can also be electrical connection;Can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

Claims

1. A steel strand connection sleeve, characterized in that The utility model relates to a detachable steel strand connector and a converter. The steel strand connector is provided with a receiving cavity along the axis of the steel strand connector, and a clamping piece group is coaxially arranged in the receiving cavity. The converter is provided with a first threaded hole at one end away from the steel strand connector. The steel strand connector and the converter are connected by screwing.

2. A steel strand connector sleeve according to claim 1, characterised in that The receiving cavity of the steel strand connector is provided with a first tapered surface, which gradually decreases in diameter in the direction away from the converter.

3. A steel strand connector sleeve according to claim 2, characterised in that The outer part of the clamping piece group is provided with a second tapered surface corresponding to the first tapered surface. The first tapered surface and the second tapered surface are in abutment. The receiving cavity of the steel strand connector is provided with a ring platform at one end away from the converter, and the inner diameter of the ring platform is smaller than the outer diameter of the clamping piece group.

4. A steel strand connector sleeve according to claim 3, characterised in that The outer part of the steel strand connector is provided with a first wrench platform.

5. A steel strand connector sleeve according to claim 4, characterised in that The outer part of the clamping piece group is provided with a ring groove.

6. A steel strand coupling sleeve according to claim 3, characterized in that The utility model further comprises an elastic member, which is elastically sleeved on the ring groove. One end of the converter is provided with a second threaded hole for connecting with the steel strand connector, and the other end is provided with a first threaded hole for connecting with the threaded steel.

7. A steel strand coupling sleeve according to claim 2, characterised in that The outer part of the converter is provided with a second wrench platform.

8. A steel strand connector sleeve according to claim 7, characterised in that The utility model further comprises an elastic stopper, which is used for elastically sleeving on the end of the steel strand close to the converter.

9. Steel strand connection sleeve according to any of claims 1-8, characterized in that ​

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