Simple negative-bending-moment steel strand pulling device
By designing a simple negative bending steel strand strand strand strand strand strand strand strand strand strand strand strand strand strand strand strand strand strand strand strand strand strand strand strand strand strand strand strand strand strand strand strand strand strand strand strands are solved using force-transmitted steel strand strand strand strand strand strand strand strand strand strand strands are solved, and efficient and safe.
Patent Information
- Application Number
- CN202421207570.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-29
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-05-29
AI Technical Summary
The existing construction methods of negative bending moment steel strands are time-consuming and laborious, inefficient and have safety hazards.
A simple negative bending steel strand strand strand strand strand strand strand strand is designed, using force transmission steel bars, nut sleeves, connecting rods, metal sliding sleeves, positioning bolts and screw holes, and steel strands are realized through hand-held pulling and pedal pushing. Negative bending moment of the line passes through the beam operation.
This equipment can improve the efficiency of steel stranded wires, reduce construction difficulty, reduce safety hazards, and is suitable for different steel stranded wires and stranded wires.
Smart Images
Figure CN222499997U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of steel strand bundle threaders, and more specifically, to a simple negative bending moment steel strand bundle threader. Background Art
[0002] With the continuous expansion of the scale of national transportation infrastructure construction, prestressed concrete T-beams that are simply supported first and then continuous are widely used in highway bridge projects. With the innovation of design concepts and the improvement of actual application effects, prestressed concrete T-beams that are simply supported first and then continuous negative moment tensioning slots are all set between the first and second cross diaphragms under the T-beam flange plates. This structure will not affect the integrity of the concrete on the top surface of the beam, and avoids the T-beam weakening the stiffness of the beam due to the reserved slots. Moreover, the force of the negative moment prestressed steel strands is more in line with the mechanical properties requirements of the negative moment tendons, which improves the durability of the prestressed steel strands and ensures the construction quality. This design was rarely used in practice before, and the construction and operation of the negative moment steel strands were difficult.
[0003] The existing construction method is to process two hanging baskets and hang them under the flange plate, and two to three construction workers stand in the hanging baskets to thread the steel strands. Since the construction workers are in mid-air to thread the steel strands, the operation is time-consuming, laborious and inefficient, and there are also prominent safety hazards.
[0004] In order to solve the above problems, the present application provides a simple negative bending moment steel strand bundle threader. Utility Model Content
[0005] The present application provides a simple negative bending moment steel strand threader adopts the following technical solution:
[0006] A simple negative bending moment steel strand bundler comprises a force transmission steel bar, wherein a first nut sleeve and a second nut sleeve are respectively provided on the same side of one end of the force transmission steel bar, the first nut sleeve is located on the upper side of the second nut sleeve, and a first connecting rod is fixedly connected to an outer wall of one side of the first nut sleeve, the first connecting rod is fixedly installed on the side wall of one end of the force transmission steel bar, a second connecting rod is fixedly connected to an outer side of one end of the second nut sleeve, and a metal sleeve is fixedly connected to one end of the second connecting rod, the metal sleeve is slidably sleeved on the outer wall of one side of the force transmission steel bar, and a positioning bolt is threadedly connected to one side end of the metal sleeve away from the second connecting rod, the threaded end of the positioning bolt is threaded with a screw hole, and a hexagonal groove is provided at the non-threaded end of the positioning bolt, and the screw hole is opened on the outer wall of one side of the force transmission steel bar.
[0007] Through the above technical solution, the setting of the hexagonal groove facilitates the screwing operation of the positioning bolt.
[0008] Furthermore, the first nut ferrule and the second nut ferrule have consistent structures and sizes, and the center positions of the first nut ferrule and the second nut ferrule are on the same reference line.
[0009] Through the above technical solution, the limitation of the positions of the two facilitates the direct clamping of the steel strand.
[0010] Furthermore, there are multiple screw holes, which are evenly opened in the shape of an "I" on the outer wall of one side of the force transmission steel bar, and each screw hole is threadedly connected and adapted to the threaded end of the positioning bolt.
[0011] Through the above technical solution, multiple screw holes facilitate the adjustment of the position of the metal sleeve and achieve the positioning effect.
[0012] Furthermore, two limiting sliding grooves are symmetrically opened on both sides of the outer wall of one end of the force transmission steel bar close to the metal sliding sleeve, and the inner walls of the two limiting sliding grooves are slidably sleeved with metal sliding bars. The two metal sliding bars are both semi-cylindrical bar structures, and the two metal sliding bars are respectively fixedly installed on both sides of the inner wall of the metal sliding sleeve.
[0013] Through the above technical solution, the limiting slide groove and the metal slide bar realize the limitation of the adjustment position of the metal slide sleeve.
[0014] Furthermore, a protective washer is fixedly sleeved on the outer wall of one side of the force-transmitting steel bar away from the first nut sleeve. The protective washer body is made of rubber material, and a plurality of anti-slip grooves are evenly arranged on the outer wall of the protective washer.
[0015] Through the above technical solution, the protective gasket can improve the contact effect between the hand and the force-transmitting steel bar.
[0016] Furthermore, two foot pedals are symmetrically fixedly installed on the outer wall of the force transmission steel bar. The foot pedals are located between the protective gasket and the metal sleeve, and the end of the foot pedal away from the force transmission steel bar is designed to be rounded.
[0017] Furthermore, the outer surfaces of both sides of the two foot pedals are fixedly mounted with a plurality of anti-skid protrusions in a matrix, and each of the anti-skid protrusions is a hemispherical metal dot structure.
[0018] Through the above technical solution, the foot pedal is convenient for the staff to perform foot-operated force pushing operation.
[0019] In summary, this application includes the following beneficial technical effects:
[0020] Through the combined action of the force transmission steel bar, the first nut sleeve, the second nut sleeve, the first connecting rod, the second connecting rod, the metal sleeve, the positioning bolt and the screw hole, a simple negative bending moment bundle threader for the steel strand can be formed. At the same time, the negative bending moment bundle threading operation of the steel strand can be realized by hand-pulling and pedal pushing of two workers, and the existing time-consuming, labor-intensive and low-efficiency problems can be overcome, and the problem of prominent safety hazards can also be overcome.
[0021] Moreover, by adjusting and positioning the distance between the first nut ferrule and the second nut ferrule, it is possible to achieve effective applicability to different steel strands and different bundle threading requirements. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 This is a schematic diagram of the overall structure of this application;
[0023] Figure 2 For this application Figure 1 A magnified view of the structure at center;
[0024] Figure 3 It is the local semi-explosion intention of this application.
[0025] Description of the numbers in the figure:
[0026] 1. Force transmission steel bar; 2. First nut sleeve; 3. Second nut sleeve; 4. First connecting rod; 5. Second connecting rod; 6. Metal sliding sleeve; 7. Positioning bolt; 8. Screw hole; 9. Limiting slide groove; 10. Metal sliding strip; 11. Protective washer; 12. Anti-skid groove; 13. Foot pedal; 14. Anti-skid protrusion. DETAILED DESCRIPTION
[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.
[0028] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0029] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0030] Example:
[0031] The present application embodiment discloses a simple negative bending moment steel strand threader. Figure 1 , Figure 2 and Figure 3 , including a force transmission steel bar 1, a first nut sleeve 2 and a second nut sleeve 3 are respectively provided on the same side of one end of the force transmission steel bar 1, the first nut sleeve 2 is located on the upper side of the second nut sleeve 3, and a first connecting rod 4 is fixedly connected to the outer wall of one side of the first nut sleeve 2, the first connecting rod 4 is fixedly installed on the side wall of one end of the force transmission steel bar 1, a second connecting rod 5 is fixedly connected to the outer side of one end of the second nut sleeve 3, and a metal sleeve 6 is fixedly connected to one end of the second connecting rod 5, the metal sleeve 6 is slidably sleeved on the outer wall of one side of the force transmission steel bar 1, and a positioning bolt 7 is screwed through the end of the metal sleeve 6 away from the second connecting rod 5, the threaded end of the positioning bolt 7 is screwed with a screw hole 8, and the non-threaded end of the positioning bolt 7 is provided with a hexagonal rotating groove, and the screw hole 8 is opened on the outer wall of one side of the force transmission steel bar 1;
[0032] The structure and size of the first nut sleeve 2 and the second nut sleeve 3 are consistent, and the center positions of the first nut sleeve 2 and the second nut sleeve 3 are on the same reference line. There are multiple screw holes 8, and the multiple screw holes 8 are evenly opened in the shape of "I" on the outer wall of one side of the force transmission steel bar 1, and each screw hole 8 is threadedly matched with the threaded end of the positioning bolt 7. Two limiting grooves 9 are symmetrically opened on both sides of the outer wall of one end of the force transmission steel bar 1 close to the metal sleeve 6. The inner walls of the two limiting grooves 9 are slidably sleeved with metal slides 10. The two metal slides 10 are both semi-cylindrical strip structures, and the two metal slides 10 are respectively fixedly installed on both sides of the inner wall of the metal sleeve 6.
[0033] See also Figure 1 A protective washer 11 is fixedly sleeved on the outer wall of one side of the force transmission steel bar 1 away from the first nut sleeve 2. The body of the protective washer 11 is made of rubber material, and a plurality of anti-skid grooves 12 are evenly arranged on the outer wall of the protective washer 11. The setting of the anti-skid grooves 12 is conducive to effectively improving the anti-skid contact effect between the staff and the hand when the staff holds the force transmission steel bar 1 through the protective washer 11;
[0034] Two foot pedals 13 are symmetrically fixedly installed on the outer wall of the force transmission steel bar 1, and the foot pedals 13 are located between the protective gasket 11 and the metal sleeve 6, and the end of the foot pedal 13 away from the force transmission steel bar 1 is designed with a rounded corner. The outer surfaces of both sides of the two foot pedals 13 are fixedly installed with multiple anti-slip bumps 14 in a matrix manner. Each anti-slip bump 14 is a hemispherical metal dot structure. The anti-slip bumps 14 arranged on the outer surfaces of both sides of the two foot pedals 13 facilitate the staff to apply force to the force transmission steel bar 1 through the foot pedals 13, which plays an effective anti-slip contact role between the foot pedals 13 and the soles of the staff's shoes, thereby preventing the safety hazard of slipping during the foot pedaling process.
[0035] The implementation principle of this embodiment is as follows: when in use, two workers sit opposite each other at the wet joint on the top of the pier, one of them holds the force transmission steel bar 1 as a whole through the protective washer 11, and uses the spacing between the first nut clamp 2 and the second nut clamp 3 to clamp it on the outside of the steel strand, and then one of them pulls the force transmission steel bar 1 through the protective washer 11, while the other pushes the force transmission steel bar 1 through the foot pedal 13, and the switching of the operation mode of the two people completes the bundle threading operation of the negative bending moment of the steel strand;
[0036] When it is necessary to adapt to different steel strands and their different bundle threading requirements, the positioning bolt 7 can be screwed with an external hexagonal tool to disengage it from a screw hole 8 to which it is screwed, and then the metal sleeve 6 can be adjusted on the outer wall of one side of the force transmission steel bar 1 to effectively adjust the use spacing between the first nut sleeve 2 and the second nut sleeve 3. The adjusted position must ensure that the positioning bolt 7 is screwed and positioned with the screw hole 8 at the required position point, and during the adjustment of the metal sleeve 6, each metal slide bar 10 performs a limited sliding cooperation work on the inner wall of the corresponding limit slide groove 9.
[0037] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A simple negative bending moment steel strand threader, comprising a force transmission steel bar (1), characterized in that: A first nut sleeve (2) and a second nut sleeve (3) are respectively provided on the same side of one end of the force transmission steel bar (1), the first nut sleeve (2) is located on the upper side of the second nut sleeve (3), and a first connecting rod (4) is fixedly connected to an outer wall of one side of the first nut sleeve (2), and the first connecting rod (4) is fixedly installed on the side wall of one end of the force transmission steel bar (1), and a second connecting rod (5) is fixedly connected to the outer side of one end of the second nut sleeve (3), and a metal sleeve (6) is fixedly connected to one end of the second connecting rod (5), and the metal sleeve (6) is slidably sleeved on the outer wall of one side of the force transmission steel bar (1), and a positioning bolt (7) is threadedly connected to the side end of the metal sleeve (6) away from the second connecting rod (5), and the threaded end of the positioning bolt (7) is threaded with a screw hole (8), and the non-threaded end of the positioning bolt (7) is provided with a hexagonal groove, and the screw hole (8) is opened on the outer wall of one side of the force transmission steel bar (1).
2. The simple negative bending moment steel strand threader according to claim 1 is characterized in that: The first nut clamp (2) and the second nut clamp (3) have the same structure and size, and the center positions of the first nut clamp (2) and the second nut clamp (3) are located on the same reference line.
3. The simple negative bending moment steel strand threader according to claim 1 is characterized in that: A plurality of the screw holes (8) are provided, and the plurality of screw holes (8) are evenly opened in an "I" shape on the outer wall of one side of the force transmission steel bar (1), and each screw hole (8) is threadedly connected and adapted to the threaded end of the positioning bolt (7).
4. The simple negative bending moment steel strand threader according to claim 1 is characterized in that: Two limiting slide grooves (9) are symmetrically provided on both sides of the outer wall of one end of the force transmission steel bar (1) close to the metal sliding sleeve (6), and the inner walls of the two limiting slide grooves (9) are slidably sleeved with metal slide bars (10), and the two metal slide bars (10) are both semi-cylindrical strip structures, and the two metal slide bars (10) are respectively fixedly installed on both sides of the inner wall of the metal sliding sleeve (6).
5. The simple negative bending moment steel strand threader according to claim 1 is characterized in that: A protective washer (11) is fixedly sleeved on the outer wall of one side of the force transmission steel bar (1) away from the first nut sleeve (2); the protective washer (11) is made of a rubber material, and a plurality of anti-slip grooves (12) are evenly arranged on the outer wall of the protective washer (11).
6. The simple negative bending moment steel strand threader according to claim 5, characterized in that: Two foot pedals (13) are symmetrically fixedly mounted on the outer wall of the force transmission steel bar (1), the foot pedals (13) are located between the protective gasket (11) and the metal sleeve (6), and one end of the foot pedal (13) facing away from the force transmission steel bar (1) is designed to be rounded.
7. The simple negative bending moment steel strand threader according to claim 6 is characterized in that: Multiple anti-skid protrusions (14) are fixedly mounted in a matrix manner on both side outer surfaces of the two footrests (13), and each of the anti-skid protrusions (14) is in the form of a hemispherical metal dot structure.