Pile head steel bar bending device with accurate bending angle
By designing a device including a positioning device, a support device and a bending device, the problem of inaccurate bending angle of the steel bar in the prior art is solved, and precise control of the bending angle of the steel bar and the improvement of structural stability and load-bearing capacity are achieved.
Patent Information
- Application Number
- CN202421915634.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-08
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-08-08
AI Technical Summary
In the prior art, the method of bending the pile head steel bar cannot ensure the accurate bending angle of the steel bar, and the concrete cracks in the pile head may be caused during the bending process, affecting the integrity and strength of the structure.
A device including a positioning device, a support device and a bending device is designed. Through the cooperation of the C-shaped sleeve and the base, the steel bars are bent outward from a certain height to avoid bending at the roots; the arc guide roller and measuring instrument on the bending device reduce friction and measure the bending angle in real time to ensure the accuracy of the angle.
The precise control of the bending angle of the steel bar is achieved, which avoids concrete cracks at the pile head and enhances the overall stability and load-bearing capacity of the structure.
Smart Images
Figure CN222902470U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of steel bar bending, in particular to a pile head steel bar bending device with precise bending angle. Background Art
[0002] In construction, the construction team will first carry out bored cast-in-place pile construction to ensure that the pile body meets the design strength requirements. After the pile body strength meets the standard, the foundation excavation work will be carried out next. Since the upper end of the bored cast-in-place pile usually contains a lot of slag, and the pile head design is usually higher than the design elevation, after completing the foundation excavation, the concrete at the top of the cast-in-place pile needs to be chiseled out according to the design elevation.
[0003] During the excavation process, the exposed steel bars are processed according to the design requirements, which may include cutting or extending the steel bars to ensure that the exposed steel bars reach the required design length. Next, the cap steel bars are tied on the excavated foundation. The cap steel bars need to be connected with the steel bars of the cast-in-place piles to ensure the stability and bearing capacity of the entire structure.
[0004] In order to improve the effect of this connection and enhance the overall performance of the structure, some engineering structures may require that the pile head reinforcement be bent outward over a certain length to form a trumpet shape. This design helps to improve the anchoring effect between the reinforcement and concrete, enhance the overall bearing capacity and earthquake resistance of the connection, ensure the stability and durability of the foundation structure, and meet the strict requirements of engineering safety and design.
[0005] The traditional method of bending steel bars at pile heads is to use a single high-pressure pump station to supply pressure to several movable steel bar bending operating ends to achieve synchronous operation of multiple ends with one pump. However, this bending method cannot guarantee the accuracy of the bending angle of the steel bars. Moreover, when bending, the lower part of the steel bars has no support and will bend from the root of the steel bars. The bending process may cause cracks in the concrete at the pile head, affecting the integrity and structural strength of the cast-in-place pile, and thus failing to achieve the best stress effect. Utility Model Content
[0006] The technical problem to be solved by the utility model is to provide a pile head steel bar bending device with accurate bending angle, so as to solve the problem that the pile head steel bar bending method in the prior art cannot ensure the accurate bending angle of the steel bar.
[0007] In order to solve the above technical problems, the technical solutions adopted by the utility model are as follows:
[0008] A pile head steel bar bending device with precise bending angle, characterized in that it includes a positioning device, a supporting device fixedly connected to the top end of the outer wall of the positioning device, and a bending device rotatably connected to the supporting device, the positioning device includes a C-shaped sleeve with a vertical groove opened on one side of the outer wall along the axial direction and a base fixedly connected to the lower end of the C-shaped sleeve, a hollow hole consistent with the inner diameter of the sleeve is provided in the middle of the base, the base is provided with a notch along the groove direction of the C-shaped sleeve, and the hollow hole is connected with the notch; the supporting device is fixedly connected to the outer wall of the side of the notch of the C-shaped sleeve, and a measuring instrument for measuring the angle is provided on the bending device.
[0009] Further preferably, the supporting device includes a supporting platform fixedly connected to the outer wall of the top end of the C-shaped sleeve, a stabilizing block fixedly connected to the lower surface of the supporting platform, a supporting seat detachably connected to the upper surface of the supporting platform, and a torsion spring connected to the bending device, the extension direction of the open end of the supporting platform is perpendicular to the opening direction of the C-shaped sleeve slot, and the supporting seat is provided with a mounting hole for installing the bending device, and the aperture of the mounting hole is consistent with the diameter of the bending device.
[0010] Further preferably, the bending device also includes a rotating shaft rotatably connected to the support seat, a bracket connected to the rotating shaft, a roller rod fixedly connected to the bracket, an arc guide roller rotatably connected to the roller rod, and a handle fixedly connected to the upper end of the bracket, the measuring instrument is connected to one side of the bracket, the outer surface of the measuring instrument is perpendicular to the axial direction of the rotating shaft, the diameter of the rotating shaft is consistent with the aperture of the mounting hole, the bracket includes a lower unit of the bracket and an upper unit of the bracket, the lower unit of the bracket is connected to the rotating shaft to form a U-shaped structure, the lower unit of the bracket is provided with a socket, the upper unit of the bracket is a door-type structure, the lower end of the upper unit of the bracket is provided with a plug, the lower unit of the bracket and the upper unit of the bracket are connected by a pin, and the pile head steel bar passes through the door hole formed by the arc guide roller, the bracket and the rotating shaft to contact the arc guide roller.
[0011] Further preferably, the measuring instrument is fixedly connected or detachably connected to one side of the bracket, and the lower unit of the bracket is fixedly connected or detachably connected to the rotating shaft.
[0012] Further preferably, the rotating shaft is connected to the supporting seat via a bearing.
[0013] Further preferably, the torsion spring is sleeved on the rotating shaft, the open end of the torsion spring is clamped with the bracket, and the middle connecting part is clamped with the supporting seat.
[0014] The beneficial effects of adopting the above technical solution are:
[0015] The utility model firstly places and fixes the steel bar through a positioning device, and bends the steel bar outwards from a certain height through a C-shaped sleeve, and the lower part that does not need to be bent is clamped in the C-shaped sleeve, and the C-shaped sleeve and the base bear the bending moment in the process of bending the steel bar, so as to avoid the steel bar from being bent from the root, and also avoid cracks in the concrete part of the cast-in-place pile; the bending device is installed through the supporting device, and the circular arc guide roller on the bending device makes the circular arc guide roller and the steel bar in a rolling state during the bending process of the steel bar, so as to reduce the friction force; the measuring instrument on the bending device measures and displays the bending angle of the steel bar in real time, so as to ensure the accuracy of the bending angle, and the bending angle of the steel bar directly affects the anchoring performance of the steel bar in the structure, and the consistent bending angle can ensure that all the steel bars show similar mechanical behaviors when subjected to tension and pressure, so as to evenly distribute the load and increase the overall stability and bearing capacity of the structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0017] Figure 2 It is a schematic diagram of the overall structure of the utility model in another direction;
[0018] Figure 3 yes Figure 1 Enlarged view of point A in the middle;
[0019] Figure 4 It is a bottom view of the utility model.
[0020] In the figure: 1-positioning device; 11-C-shaped sleeve; 12-base; 121-hollow hole; 122-notch; 2-support device; 21-stabilizing block; 22-support platform; 23-support seat; 24-torsion spring; 3-bending device; 31-measuring instrument; 32-rotating shaft; 33-bracket; 331-bracket lower unit; 332-bracket upper unit; 34-roller rod; 35-arc guide roller; 36-handle. DETAILED DESCRIPTION
[0021] In order to make the features and advantages of the present invention more obvious and easy to understand, the technical solution will be clearly and completely described below in combination with the drawings and specific implementation methods. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Example
[0022] like Figure 1-4As shown, a pile head steel bar bending device with a precise bending angle includes a positioning device 1, the positioning device 1 includes a C-shaped sleeve 11 with a vertical groove opened on one side of the outer wall along the axial direction and a base 12 fixedly connected to the lower end of the C-shaped sleeve 11, a hollow hole 121 consistent with the inner diameter of the sleeve 11 is provided in the middle of the base 12, and a notch 122 is provided in the base 12 along the groove direction of the C-shaped sleeve 11, and the hollow hole 121 and the notch 122 are connected; and also includes a supporting device 2 fixedly connected to the outer wall of the positioning device 1, the supporting device 2 is fixedly connected to the outer wall of the side of the notch of the C-shaped sleeve 11, as shown in FIG. Figure 3 As shown, the support device 2 includes a support platform 22 fixedly connected to the outer wall of the top end of the C-shaped sleeve 11, a stabilizing block 21 fixedly connected to the lower surface of the support platform 22, a support seat 23 detachably connected to the upper surface of the support platform 22, and a torsion spring 24 connected to the bending device 3. The extension direction of the open end of the support platform 22 is perpendicular to the opening direction of the C-shaped sleeve groove. The torsion spring 24 is sleeved on the rotating shaft 32. The open end of the torsion spring 24 is clamped with the bracket 33, and the middle connecting part is clamped with the support seat 23. The support seat 23 is provided with a mounting hole for mounting the bending device, and the aperture of the mounting hole is consistent with the diameter of the bending device; it also includes a bending device 3 rotatably connected to the support device 2, and a measuring instrument 31 for measuring an angle is provided on the bending device 3. The bending device 3 also includes a rotating shaft 32 connected to the support seat 23 through a bearing. For example, a sliding bearing or a rolling bearing is provided between the bracket 33 and the support seat 23, a bracket 33 connected to the rotating shaft 32, a roller rod 34 fixedly connected to the bracket 33, and a roller rod 34 rotatably connected to the roller rod The arc guide roller 35 on the bracket 34, the handle 36 fixedly connected to the upper end of the bracket 33, the torsion spring 24 is sleeved on the rotating shaft 32, the open end of the torsion spring 24 is clamped with the bracket 33, the middle connecting part is clamped with the support seat 23, the measuring instrument 31 is connected to one side of the bracket 33, the outer surface of the measuring instrument 31 is perpendicular to the axial direction of the rotating shaft 32, the diameter of the rotating shaft 32 is consistent with the aperture of the mounting hole, the bracket 33 includes a bracket lower unit 331 and a bracket upper unit 332, the bracket lower unit 331 is connected to the rotating shaft 32 as The bracket has a U-shaped structure, the lower unit 331 of the bracket is provided with a socket, the upper unit 332 of the bracket is a door-shaped structure, a plug is provided at the lower end of the upper unit 332 of the bracket, the lower unit 331 of the bracket and the upper unit 332 of the bracket are connected by a pin, the pile head steel bar passes through the door hole formed by the arc guide roller 35, the bracket 33 and the rotating shaft 32 and contacts the arc guide roller 35, and the arc guide roller 35 is designed to adapt to steel bars of different diameters and provide better grip and guidance, thereby ensuring the stability and bending accuracy of the steel bars during the bending process. Example
[0023] When in use, the pile head steel bar is placed in the C-shaped sleeve 11 through the hollow hole 121, the notch 122 on the base 12 and the C-shaped sleeve 11 with a vertical groove on one side of the outer wall along the axial direction; then the upper unit 332 of the bracket is separated from the lower unit 331 of the bracket, and the pile head steel bar is placed in the door opening formed by the arc guide roller 35, the bracket 33 and the rotating shaft 32. The pile head steel bar passes through the door opening and is located on both sides of the door opening, and contacts with the guide rails of the arc guide roller 35. Then, the insertion rod of the upper unit 332 of the bracket is inserted into the insertion rod of the lower unit 331 of the bracket. The holes are connected by a latch to form a closed door opening; the bracket 33 of the torsion spring limit bending device 3 of the support device 2 is tilted downward using the handle 36, and the arc guide roller 35 on the bending device 3 is used to make the arc guide roller 35 and the steel bar roll during the steel bar bending process, thereby reducing friction and allowing the steel bar to be quickly bent to a desired angle; after the bending is completed, the insertion rod of the upper unit 332 of the bracket and the insertion hole of the lower unit 331 of the bracket are separated, and the bent pile head steel bar is separated from the device to complete this bending work. Example
[0024] The measuring instrument 31 can be fixedly connected or detachably connected to one side of the bracket 33, for example, the measuring instrument 31 is fixed to the bracket 33 by welding or a bolt structure; the bracket lower unit 331 can be fixedly connected or detachably connected to the rotating shaft 32, for example, the bracket 33 is connected to the rotating shaft 32 by welding or threading. Example
[0025] The measuring instrument 31 is a digital display angle meter, which is used to provide real-time angle readings to ensure the accuracy of the bending angle; the inner wall of the C-shaped sleeve 11 is axially provided with a plurality of anti-skid grooves, which are used to increase the friction between the steel bar and the sleeve to prevent the steel bar from sliding during the bending process; the bracket 33 and the handle 36 of the bending device 3 are designed to be adjustable in length to adapt to different operating forces and user heights, thereby improving the comfort and flexibility of operation. Example
[0026] The measuring instrument 31 has a wireless transmission function and can send the measured angle data to an external device (such as a smart phone or a computer) in real time to facilitate remote monitoring and recording of the bending process.
[0027] The utility model firstly places and fixes the steel bar through a positioning device, and bends the steel bar outwards from a certain height through a C-shaped sleeve, and the lower part that does not need to be bent is clamped in the C-shaped sleeve, and the C-shaped sleeve and the base bear the bending moment in the process of bending the steel bar, so as to avoid the steel bar from being bent from the root, and also avoid cracks in the concrete part of the cast-in-place pile; the bending device is installed through the supporting device, and the circular arc guide roller on the bending device makes the circular arc guide roller and the steel bar in a rolling state during the bending process of the steel bar, so as to reduce the friction force; the measuring instrument on the bending device measures and displays the bending angle of the steel bar in real time, so as to ensure the accuracy of the bending angle, and the bending angle of the steel bar directly affects the anchoring performance of the steel bar in the structure, and the consistent bending angle can ensure that all the steel bars show similar mechanical behaviors when subjected to tension and pressure, so as to evenly distribute the load and increase the overall stability and bearing capacity of the structure.
[0028] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the scope of protection of the claims of the utility model.
Claims
1. A pile head steel bar bending device with precise bending angle, characterized by: The invention comprises a positioning device (1), a supporting device (2) fixedly connected to the top of the outer wall of the positioning device (1), and a bending device (3) rotatably connected to the supporting device (2), wherein the positioning device (1) comprises a C-shaped sleeve (11) with a vertical groove on one side of the outer wall along the axial direction and a base (12) fixedly connected to the lower end of the C-shaped sleeve (11), a hollow hole (121) having the same inner diameter as the sleeve (11) is provided in the middle of the base (12), a notch (122) is provided along the direction of the vertical groove of the C-shaped sleeve (11), and the hollow hole (121) and the notch (122) are connected; the supporting device (2) is fixedly connected to the outer wall at the top of the C-shaped sleeve (11), and a measuring instrument (31) for measuring angles is provided on the bending device (3).
2. A pile head steel bar bending device with precise bending angle according to claim 1, characterized in that: The support device (2) comprises a support platform (22) fixedly connected to the outer wall of the top end of the C-shaped sleeve (11), a stabilizing block (21) fixedly connected to the lower surface of the support platform (22), a support seat (23) detachably connected to the upper surface of the support platform (22), and a torsion spring (24) connected to the bending device (3), the extension direction of the open end of the support platform (22) is perpendicular to the opening direction of the notch of the C-shaped sleeve (11), and the support seat (23) is provided with a mounting hole for mounting the bending device, and the diameter of the mounting hole is consistent with the diameter of the bending device.
3. A pile head steel bar bending device with precise bending angle according to claim 2, characterized in that: The bending device (3) further comprises a rotating shaft (32) rotatably connected to the support seat (23), a bracket (33) connected to the rotating shaft (32), a roller rod (34) fixedly connected to the bracket (33), an arc guide roller (35) rotatably connected to the roller rod (34), and a handle (36) fixedly connected to the upper end of the bracket (33); the measuring instrument (31) is connected to one side of the bracket (33); the outer surface of the measuring instrument (31) is perpendicular to the axial direction of the rotating shaft (32); the diameter of the rotating shaft (32) is equal to the diameter of the mounting hole. The apertures are consistent, the bracket (33) comprises a bracket lower unit (331) and a bracket upper unit (332), the bracket lower unit (331) and the rotating shaft (32) are connected to form a U-shaped structure, the bracket lower unit (331) is provided with a plug hole, the bracket upper unit (332) is a door-shaped structure, a plug is provided at the lower end of the bracket upper unit (332), the bracket lower unit (331) and the bracket upper unit (332) are connected by a plug, and the pile head steel bar passes through the door hole formed by the circular arc guide roller (35), the bracket (33) and the rotating shaft (32) and contacts the circular arc guide roller (35).
4. A pile head steel bar bending device with precise bending angle according to claim 3, characterized in that: The measuring instrument (31) is fixedly connected or detachably connected to one side of the bracket (33), and the bracket lower unit (331) is fixedly connected or detachably connected to the rotating shaft (32).
5. The device for bending pile head steel bars with precise bending angle according to claim 3, characterized in that: The rotating shaft (32) is connected to the supporting seat (23) via a bearing.
6. The device for bending pile head steel bars with precise bending angle according to claim 3, characterized in that: The torsion spring (24) is sleeved on the rotating shaft (32); the open end of the torsion spring (24) is clamped with the bracket (33); and the middle connecting portion is clamped with the support seat (23).