Reinforcing steel bar strong-pulling fastener of concrete prefabricated part
By designing the reinforced pull fastener for clamping members and pulling members, the combination of the tapered clamping sleeve and sliding ear plate, bidirectional screw and threaded sleeve is used to achieve efficient clamping and strong tension of the steel bars, which solves the problem of current There are problems of low efficiency and high cost of continuous connection of steel bars in the technology.
Patent Information
- Application Number
- CN202323546979.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-25
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2033-12-25
AI Technical Summary
The existing concrete prefabricated parts require manual welding or mechanical processing during the continuous connection of steel bars during prefabrication, resulting in low efficiency and high cost, and are subject to weather and equipment limitations.
A reinforced bar tightening fastener including a clamping member and a pulling member is designed. The clamping member realizes the steel clamping through a tapered clamping sleeve and a sliding ear plate, and the pulling member realizes strong tightening through a bidirectional screw and a threaded sleeve. , avoid processing of the ends of the steel bars.
It improves operating efficiency, reduces costs, and simplifies the steel bar connection process, reducing dependence on mechanical equipment and labor.
Smart Images
Figure CN222201057U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of building material equipment, in particular to a steel bar strong pulling fastener for a concrete prefabricated part. Background Art
[0002] When prestressed concrete parts are prefabricated, the built-in steel bars generally need to be pre-tensioned, and the steel bars that are not long enough need to be spliced and tightened. The main ways of splicing are manual welding and fastener splicing. Manual welding requires the use of welding equipment and professional welding personnel, and is also affected by the weather and has many limitations. Although fastener splicing has relatively few limitations, most fastener splicing methods currently require processing of the ends of the steel bars to be connected, which is a cumbersome process and requires mechanical equipment during processing, which adds additional costs. For example, the utility model patent with the authorization announcement number CN203307997U discloses a "Prefabricated Concrete Part Strong Pull Fastener", which describes: "... the diameter of the upper end pier of the steel bar is a small conical pier with a large upper part and a small lower part, and the small conical pier is engaged with the conical hole with a large upper part and a small lower part..."; for another example, the invention patent with the authorization announcement number CN103276853B discloses a "Prestressed Concrete Component Steel Bar Connection Buckle and Connection Method", which describes: "... the steel bar head to be connected is threaded and screwed into the combination nut, and the combination nut thread is connected with the bolt thread of the external steel bar..." Most of these fastener connections require mechanical processing of the steel bars to be connected in advance, such as pier heads, threaded threads, etc. Mechanical processing on site is not only inconvenient, but also affects efficiency and increases costs. In view of this, if the strong pull fastener can be improved, the steel bars can be clamped and strongly tightened without the need for additional processing of the steel bars to be connected, so as to improve work efficiency and reduce costs, which is a problem to be solved in this case. Utility Model Content
[0003] In order to overcome the deficiencies in the prior art, the utility model discloses a steel bar pulling fastener for a precast concrete part, comprising a clamping member and a pulling member, wherein the clamping member is provided with a tapered clamping sleeve in a circular sleeve with a tapered inner cavity, and the clamping sleeve can clamp the steel bar; an ear plate with a smooth circular hole is provided at the rear section of the outer wall of the sleeve, the clamping member is composed of two pieces, the two clamping members are arranged side by side and in opposite directions, and the ear plates thereof are slidably sleeved on the front section of the outer wall of the sleeve of the other party; the pulling member is provided with a bidirectional screw and two screw sleeves with mutually opposite threads, the two screw sleeves are respectively fixed to the two ear plates and screwed to the two sides of the bidirectional screw, and the two clamping members can be driven to move toward each other when the bidirectional screw rotates. The utility model improves the strong pulling fastener, and arranges a clamping sleeve in the sleeve of the clamping member, which can be tightened by utilizing the mutually matching conical surfaces to move toward each other, and the two clamping members are arranged opposite to each other and are slidably sleeved with each other through ear plates; the two ear plates are provided with pulling members with two sets of thread pairs that can move toward each other, and the two-way screws of the pulling members are rotated to drive the two clamping members to move toward their respective front ends, so that the steel bars can be clamped and strongly tightened without processing the ends of the steel bars, thereby improving working efficiency and reducing costs.
[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:
[0005] A reinforcement fastener for concrete precast parts, characterized in that it includes a clamping member and a pulling member, the clamping member is provided with a conical clamping member in the inner cavity of a tubular body, the clamping member can clamp the reinforcement, a plate body with sliding holes is provided at the rear section of the outer wall of the tubular body, the clamping member is composed of two pieces, the two clamping members are arranged side by side and opposite to each other, the plates with sliding holes are slidably sleeved on the front section of the outer wall of the tubular body of each other, the pulling member is provided with screws with different rotation directions on both sides and two threaded sleeves with different rotation directions, the two threaded sleeves of the pulling member are respectively fixed to the plates with sliding holes of the two clamping members and placed between the tubular bodies of the two clamping members, and the two clamping members can be driven to move toward each other when the screw of the pulling member rotates.
[0006] The clamping component comprises a sleeve and a clamping sleeve, and the clamping sleeve is placed in the inner cavity of the sleeve.
[0007] The sleeve is a hollow round tube with a smooth outer wall, the front section of the inner cavity is cylindrical, and the inner cavity gradually narrows from the middle to the rear end so that the rear section is a round trumpet with a conical surface.
[0008] The clamping sleeve is a composite component formed by cutting a circular tubular body with a conical outer surface into two halves, the gap t between the two halves is not less than 2mm, the taper of the outer conical surface matches the taper of the conical inner wall of the sleeve, and the clamping sleeve can be placed in the rear section of the sleeve and can be tightened when moving in the rear section of the sleeve.
[0009] Furthermore, the inner cavity of the clamping sleeve is a round hole provided with anti-slip grooves.
[0010] The clamping member also includes an ear plate, one end of which is fixedly connected to the rear section of the outer wall of the sleeve. The ear plate is provided with a smooth round hole on its flat plate body, and the smooth round hole can be sleeved on the outer wall of the sleeve of another clamping member and can slide on the sleeve of another clamping member.
[0011] The ear plate is also provided with a through hole between its fixed end and the smooth circular hole, and the center of the through hole is placed at the midpoint of the line connecting the center of the sleeve fixed to one end of the ear plate and the center of the smooth circular hole.
[0012] The pulling member includes a bidirectional screw and a threaded sleeve. The two sides of the bidirectional screw are respectively provided with a left-handed external thread and a right-handed external thread. The major diameter of the screw is not less than the outer diameter of the steel bar to be pulled. The threaded sleeve is composed of two pieces and the internal threads of the two threaded sleeves are respectively left-handed and right-handed. The two threaded sleeves are respectively inserted into the through holes of the two ear plates and fixedly connected to the ear plates. The two threaded sleeves are respectively screwed on both sides of the bidirectional screw.
[0013] Furthermore, both ends of the bidirectional screw are respectively provided with polygonal wrench positions.
[0014] From the above description, it can be known that the advantages of the reinforced steel bar pulling fastener for concrete prefabricated parts provided by the utility model are: a clamping sleeve that can be tightened by moving the mutually matched conical surfaces toward each other is set in the sleeve of the clamping member, and the two clamping members are set opposite to each other and slidably sleeved with each other through the ear plates; two sets of pulling members with thread pairs that can move toward each other are set on the two ear plates, and the two-way screws of the pulling member are rotated to drive the two clamping members to move toward their respective front ends, so that the steel bars can be clamped and strongly tightened without processing the ends of the steel bars, thereby improving the working efficiency and reducing the cost. The utility model has a reasonable design, a simple structure, a low cost, and is easy to promote. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a general schematic diagram of a reinforced steel bar tension fastener for a prefabricated concrete part according to the utility model;
[0016] Figure 2 for Figure 1 A-direction enlarged schematic diagram;
[0017] Figure 3 is an enlarged schematic diagram of a clamping member;
[0018] Figure 4 for Figure 3 A schematic diagram of the B direction in FIG.
[0019] Figure 5 is an enlarged schematic diagram of the clamping sleeve;
[0020] Figure 6 for Figure 5 The C-direction enlarged schematic diagram;
[0021] Figure 7 This is an enlarged schematic diagram of the pulled component.
[0022] Reference numerals:
[0023] 1 clamping member, 11 sleeve, 12 clamping sleeve, 13 ear plate, 2 pulling member, 21 bidirectional screw, 22 screw sleeve, 900 steel bar. DETAILED DESCRIPTION
[0024] The present invention is further described below through specific implementation methods.
[0025] like Figure 1 and Figure 2 As shown, a steel bar pulling fastener for a concrete precast part described in the utility model comprises a clamping member 1 and a pulling member 2, wherein the clamping member 1 is provided with a conical clamping member in the inner cavity of a tubular body, and the clamping member can clamp the steel bar 900, and a plate body with sliding holes is provided at the rear section of the outer wall of the tubular body, the clamping member 1 is composed of two pieces, the two clamping members 1 are arranged side by side and opposite to each other, and the plates with sliding holes are slidably sleeved on the front section of the outer wall of the tubular body of each other, the pulling member 2 is provided with screws with different rotation directions on both sides and two threaded sleeves with different rotation directions, the two threaded sleeves of the pulling member 2 are respectively fixed to the plates with sliding holes of the two clamping members 1 and placed between the tubular bodies of the two clamping members 1, and when the screw of the pulling member 2 is rotated, the two clamping members 1 can be driven to move toward each other.
[0026] like Figures 1 to 6As shown, the clamping member 1 of the utility model comprises a sleeve 11, a clamping sleeve 12 and an ear plate 13, wherein the clamping sleeve 12 is placed in the inner cavity of the sleeve 11. The sleeve 11 is a hollow circular tube with a smooth outer wall, the front section of the inner cavity is cylindrical, and the inner cavity gradually narrows from the middle to the rear end, so that the rear section is in the shape of a round trumpet with a conical surface. The clamping sleeve 12 is a component formed by cutting a circular tubular body with a conical outer surface into two halves, the gap t between the two halves is not less than 2mm, the taper of the outer conical surface matches the taper of the inner wall with a conical surface of the sleeve 11, the clamping sleeve 12 can be placed in the rear section of the sleeve 11 and can be tightened when moving in the rear section of the sleeve 11, and the inner cavity of the clamping sleeve 12 is a round hole with anti-slip teeth. One end of the ear plate 13 is fixedly connected to the rear section of the outer wall of the sleeve 11. The ear plate 13 is provided with a smooth circular hole on its flat plate body. The smooth circular hole can be sleeved on the outer wall of the sleeve 11 of another clamping member 1 and can slide on the sleeve 11 of another clamping member 1. The ear plate 13 is also provided with a through hole between its fixed end and the smooth circular hole. The center of the through hole is placed at the midpoint of the line connecting the center of the sleeve 11 fixed to one end of the ear plate 13 and the center of the smooth circular hole.
[0027] like Figure 1 , Figure 2 and Figure 7 As shown, the pulling member 2 described in the utility model includes a bidirectional screw 21 and a threaded sleeve 22. The two sides of the bidirectional screw 21 are respectively provided with a left-handed external thread and a right-handed external thread. The major diameter of the screw is not less than the outer diameter of the steel bar 900 to be pulled. The threaded sleeve 22 is two pieces and the internal threads of the two threaded sleeves 22 are respectively left-handed and right-handed. The two threaded sleeves 22 are respectively inserted into the through holes of the two ear plates 13 and fixedly connected to the ear plates 13. The two threaded sleeves 22 are respectively screwed on both sides of the bidirectional screw 21. The two ends of the bidirectional screw 21 are respectively provided with polygonal wrench positions.
[0028] The utility model improves the strong pulling fastener, and provides a clamping sleeve 12 in the sleeve 11 of the clamping member 1 that can be tightened by moving the conical surfaces that cooperate with each other towards each other, and the two clamping members 1 are arranged opposite to each other and are slidably sleeved with each other through the ear plates 13; the two ear plates 13 are provided with two sets of pulling members 2 with thread pairs that can move towards each other, and the two-way screw 21 of the pulling member 2 is rotated to drive the two clamping members 1 to move toward their respective front ends, so that the steel bar 900 can be clamped and strongly tightened without processing the end of the steel bar 900, thereby improving working efficiency and reducing costs.
[0029] The above is only a specific embodiment of the present utility model, but the design concept of the present utility model is not limited to this. Any non-substantial changes to the present utility model using this concept shall be deemed as an infringement of the protection scope of the present utility model.
Claims
1. A reinforced steel bar fastener for a precast concrete part, characterized in that: The invention comprises a clamping member (1) and a pulling member (2). The clamping member (1) is provided with a conical clamping member in the inner cavity of a tubular body, and the clamping member can clamp a steel bar (900). A plate body with a sliding hole is provided at the rear section of the outer wall of the tubular body. The clamping member (1) is composed of two pieces. The two clamping members (1) are arranged side by side and in opposite directions to each other. The plates with sliding holes are slidably connected to the front section of the outer wall of the tubular body of each other. The pulling member (2) is provided with screws with different rotation directions on both sides and two threaded sleeves with different rotation directions. The two threaded sleeves of the pulling member (2) are respectively fixed to the plates with sliding holes of the two clamping members (1) and are placed between the tubular bodies of the two clamping members (1). When the screw of the pulling member (2) rotates, the two clamping members (1) can be driven to move towards each other.
2. The reinforced steel bar fastener for a precast concrete part according to claim 1, characterized in that: The clamping member (1) comprises a sleeve (11) and a clamping sleeve (12), and the clamping sleeve (12) is placed in the inner cavity of the sleeve (11).
3. The reinforced steel bar fastener for a precast concrete part according to claim 2, characterized in that: The sleeve (11) is a hollow circular tube with a smooth outer wall, the front section of the inner cavity is cylindrical, and the inner cavity gradually narrows from the middle to the rear end, so that the rear section is in the shape of a circular trumpet with a conical surface.
4. The reinforced steel bar fastener for a precast concrete part according to claim 3, characterized in that: The clamping sleeve (12) is a composite component formed by cutting a circular tubular body with a conical outer surface into two halves, the gap t between the two halves is not less than 2 mm, the taper of the outer conical surface matches the taper of the conical inner wall of the sleeve (11), and the clamping sleeve (12) can be placed in the rear section of the sleeve (11) and can be tightened when moving in the rear section of the sleeve (11).
5. The reinforcement fastener for a precast concrete part according to claim 4, characterized in that: The inner cavity of the clamping sleeve (12) is a circular hole provided with anti-slip tooth grooves.
6. The reinforcement fastener for a precast concrete part according to claim 4, characterized in that: The clamping member (1) further comprises an ear plate (13), one end of which is fixedly connected to the rear section of the outer wall of the sleeve (11). The ear plate (13) is provided with a smooth circular hole on its flat plate body. The smooth circular hole can be sleeved on the outer wall of the sleeve (11) of another clamping member (1) and can slide on the sleeve (11) of another clamping member (1).
7. The reinforcement fastener for a precast concrete part according to claim 6, characterized in that: The ear plate (13) is also provided with a through hole between its fixed end and the smooth circular hole, the center of the through hole being located at the midpoint of a line connecting the center of the sleeve (11) fixed to one end of the ear plate (13) and the center of the smooth circular hole.
8. The reinforcement fastener for a precast concrete part according to claim 7, characterized in that: The pulling member (2) comprises a bidirectional screw (21) and a screw sleeve (22). The two sides of the bidirectional screw (21) are respectively provided with a left-handed external thread and a right-handed external thread. The minor diameter of the screw is not less than the outer diameter of the steel bar (900) to be pulled. The screw sleeve (22) is composed of two pieces and the internal threads of the two screw sleeves (22) are respectively left-handed and right-handed. The two screw sleeves (22) are respectively inserted into the through holes of the two ear plates (13) and fixedly connected to the ear plates (13). The two screw sleeves (22) are respectively screwed on the two sides of the bidirectional screw (21).
9. The reinforcement fastener for a precast concrete part according to claim 8, characterized in that: The two ends of the bidirectional screw (21) are respectively provided with polygonal wrench positions.