A universal clamp for pulling up planting rebar

Abstract

This utility model relates to a universal clamp for pulling out reinforcing bars, including clamping components and a fixing cylinder. The clamping component includes an arc plate, sliders, and hinges. A mounting frame is provided on the back of the arc plate, and two sliders are movably arranged in the mounting frame. The two sliders are connected to the inner side of the mounting frame by springs. Each slider is hinged to a hinge, and the free ends of the two hinges are hinged to the same mounting base. The fixing cylinder has a mounting cavity, and multiple clamping components are arranged in the mounting cavity at equal intervals around a fixed circumference. The mounting bases of the clamping components are fixedly connected to the inner side of the mounting cavity of the fixing cylinder. Reinforcing bars of different diameters are sleeved in the fixing cylinder and located between the multiple clamping components. The sliders on the back of the arc plate slide in the mounting frame, and the springs are compressed or rebound, so that the arc surface of the arc plate fits against the reinforcing bar, thereby clamping it. The beneficial effects achieved by this utility model are: convenient to use, easy to install and disassemble, and applicable to reinforcing bars of various sizes.

Description

Technical Field

[0001] This utility model relates to the field of clamps for rebar installation, and in particular to a universal clamp for rebar pulling. Background Technology

[0002] Rebar anchoring, also known as rebar planting, is a connection technique used in seismic reinforcement of building structures. It involves anchoring rebar after installation using structural adhesive to lock in the rebar. Applications include: remedial measures for missing or misaligned rebar during construction; reinforcement of components with enlarged cross-sections; extension of beams and columns during span expansion or jacking of superstructures; column extensions during building additions; and rebar anchoring for shear wall additions in high-rise buildings. It is the optimal choice for structural reinforcement and heavy load fastening. After installation, the strength between the anchored rebar and the anchoring carrier is typically tested using a testing device.

[0003] Rebar pulling is designed to ensure the quality of construction without causing any issues. Currently, when pulling rebars, clamping devices are used to secure the rebars to be tested. However, existing rebar clamping equipment requires a small hammer to forcefully drive the clamping plates into the device's collar to secure the rebars. After testing, these clamping plates must be hammered out one by one. The entire installation and removal process is time-consuming, labor-intensive, and inefficient. Furthermore, the clamping plates are prone to being lost or flying off the collar due to improper operation, making them inconvenient to use and unsuitable for tightening rebars of various diameters.

[0004] Therefore, based on customer feedback regarding the shortcomings of the existing device, the inventors made further improvements to overcome the aforementioned problems. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a universal clamp for rebar pulling that is easy to use, install and disassemble, and applicable to rebar installation of various sizes.

[0006] The purpose of this utility model is achieved through the following technical solution: a universal clamp for pulling out planting rebar, including a clamping component and a fixing cylinder; The clamping component includes an arc plate, a slider, and a hinge; a mounting frame is provided on the back of the arc plate, and two sliders are movably arranged in the mounting frame. The two sliders are connected to the inner side of the mounting frame by a spring; the two sliders are respectively hinged to a hinge, and the free ends of the two hinges are hinged to the same mounting base. The fixed cylinder has a mounting cavity, and multiple clamping members are arranged in the mounting cavity and are equally spaced around the fixed circumference. The mounting seat of each clamping member is fixedly connected to the inner side of the mounting cavity of the fixed cylinder. During operation, anchor bars of different diameters are fitted into the fixed cylinder and positioned between multiple clamping parts. Since the required anchor bar sizes are different, the slider on the back of the arc plate slides in the mounting frame, and the spring is compressed or rebounded, so that the arc surface of the arc plate fits the anchor bar, thereby clamping it.

[0007] As a preferred technical solution of this application, a rectangular protrusion is provided in the mounting frame, and the two sliders are a first slider and a second slider, respectively. The first slider is fitted and inserted into the second slider and the rectangular protrusion, and can slide along the rectangular protrusion.

[0008] As a preferred technical solution of this application, the spring includes spring A, spring B and connecting spring; One end of spring A is connected to the upper inner bottom surface of the mounting frame, and the other end is connected to the first slider. One end of spring B is connected to the lower inner bottom surface of the mounting frame, and the other end is connected to the second slider. One end of the connecting spring is connected to the first slider, and the other end is connected to the second slider, thereby connecting the first slider, the second slider, and the mounting frame.

[0009] As a preferred technical solution of this application, the hinge includes two movable rods; both ends of the movable rods are provided with double-eared pins, and the double-eared pins have two thin plates arranged opposite each other, the two thin plates are spaced apart and have coaxial through holes.

[0010] As a preferred technical solution of this application, the two movable rods are respectively hinged to the hinge blocks provided on the first slider and the second slider by inserting double-eared pins, and the slider is connected to the hinge by inserting a small pin into the through hole.

[0011] As a preferred technical solution of this application, the upper end of the arc plate is provided with a through hole, which has an internal thread, and a screw is inserted into the through hole; after the anchor is installed between multiple clamping parts, the screw is turned so that the screw is close to the anchor and clamps it.

[0012] As a preferred technical solution of this application, the screw has a buffer pad, which is disposed at the end of the screw that contacts the rebar, so as to avoid damage to the rebar when the screw is turned.

[0013] This utility model has the following advantages: (1) Applicable to rebar installation of various diameters; Existing clamping equipment is often not suitable for use with rebar of various diameters, requiring replacement of the clamping plates. However, existing clamping equipment often uses a small hammer to forcefully hammer the clamping plates into the collar of the equipment to clamp and fix the rebar. After inspection, these clamping plates need to be hammered out one by one, which is time-consuming and labor-intensive. This solution uses a slider that is hinged to the fixed cylinder through a hinged movable rod, and the slider can slide on the mounting frame, allowing the clamping space to be adaptively expanded and reduced for adjustment. (2) The structure is simple and compact, making it easy to install and disassemble; The fixture designed in this scheme has a relatively simple overall structure. First, the overall flexibility of the device is improved by the cooperation of the clamping component, the slider, the spring, and the movable rod. Then, the locking screw on the upper edge of the clamping component is tightened to lock the clamping component to the anchor bar, which is convenient for installation and fixation. At the same time, the slider is installed in the mounting frame, and the components are connected only by the spring, which also serves to buffer the slider. The clamping component and the fixed cylinder are hinged by a movable hinge rod with double-headed double-eared pins to realize the change of clamping space. The overall structure is very compact and easy to install and disassemble. Attached Figure Description

[0014] Figure 1 This is a first-view structural schematic diagram of the present invention; Figure 2 This is a structural schematic diagram of the present invention from a second perspective; Figure 3 This is a structural schematic diagram of the present invention from a frontal view. Figure 4 This is a structural schematic diagram of the present invention from a half-section view perspective; Figure 5 This is a first-view structural schematic diagram of the clamping component of this utility model; Figure 6 This is a schematic diagram of the structure of the clamping component of this utility model, shown in half-section. In the diagram: 1-arc plate, 2-first slider, 3-second slider, 4-moving rod, 5-spring A, 6-spring B, 7-connecting spring, 8-fixed cylinder, 9-mounting cavity, 10-screw, 11-double-eared pin, 12-single-eared pin, 13-mounting base, 14-mounting frame. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0016] It should be noted that the orientation or positional relationship indicated by terms such as "left" and "right" is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of this invention is usually placed in during use, or the orientation or positional relationship that is commonly understood by those skilled in the art. Such terms are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0017] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0018] Therefore, based on the above issues, please refer to Figure 1 This utility model proposes a universal clamp for pulling out planting rebar to solve the problem.

[0019] See Figures 1-6 The universal clamp for pulling out planting rebar proposed in this implementation plan includes clamping parts, hinge parts and fixing cylinder 8; Among them, see Figures 5-6 The clamping component includes an arc plate 1, a slider, and a hinge. The inner wall of the clamping component is an arc plate 1, and a mounting frame 14 is provided on the back of the arc plate 1. Two sliders are movably arranged in the mounting frame 14, and the two sliders are connected to the inner side of the mounting frame 14 by springs. The two sliders are respectively hinged to a hinge, and the free ends of the two hinges are hinged to the same mounting base 13. Among them, see Figures 1-3 The fixed cylinder 8 has a mounting cavity 9, in which multiple clamping members are arranged at equal intervals around the fixed circumference (the arc plates 1 of the multiple clamping members are opposite each other, and the arc plates 1 form a structure similar to a cylinder). The mounting seat 13 of each clamping member is fixedly connected to the inner side of the mounting cavity 9 of the fixed cylinder 8. During operation, the anchor bar is first placed in the fixing sleeve 8 and positioned between multiple clamping parts. The slider on the back of the arc plate 1 slides in the mounting frame 14, thereby compressing or rebounding the connected spring. Finally, the arc surface of the arc plate 1 fits against the anchor bar, thereby clamping it.

[0020] Currently, the clamps used for rebar pulling often require a small hammer to forcefully drive the clamping plates into the equipment's collar to secure the rebar. After inspection, these clamping plates need to be hammered out one by one. The clamping plates and the clamp collar are assembled, making it easy for them to be lost during installation and disassembly due to operational issues. Furthermore, the currently used clamping equipment has low flexibility and cannot be adapted to rebars of various sizes. Therefore, this solution designs a universal clamp for rebar pulling. By movably connecting the clamping component used to hold the rebar to the fixed cylinder 8, the clamping component is prevented from being lost during installation and disassembly. At the same time, the clamping component and the fixed cylinder 8 are movably connected by a slider, spring, and hinge, allowing the clamping space of the clamping component to be increased or decreased to accommodate rebars of different diameters.

[0021] In this embodiment, see Figure 1 and Figures 5-6 For the clamping component, the clamping component consists of an arc plate 1 as the main body. A mounting frame 14 is opened from top to bottom along the back of the arc plate 1. The mounting frame 14 is a long rectangular slot, and the bottom surface of the mounting frame 14 is an arc surface, which can fit and be fixed to the arched outer wall of the arc plate 1 of the clamping component. The bottom surface of the mounting frame 14 is provided with a protruding rectangular protrusion, which serves as a track and is fitted and inserted into the slider. At the same time, a through hole is opened at the upper end of the clamping component. This through hole is a threaded through hole, and four locking screws 10 are screwed into the clamping component to lock and fix the anchor bar. After the anchor bar is installed in the middle of multiple clamping components, the screws 10 are turned to make the screws 10 fit tightly against the anchor bar and clamp it.

[0022] Furthermore, regarding the slider in the clamping component; the slider is concave in shape, and two sliders are adapted to be installed in the mounting frame 14, namely the first slider 2 and the second slider 3, and the two sliders can slide along the rectangular protrusion, i.e., the track, within the mounting frame 14. One end of the spring 7A5 is connected to the upper inner wall of the mounting frame 14, and the other end of the spring A5 is connected to the first slider 2. At the same time, one end of the spring 7B6 is also connected to the lower inner wall of the mounting frame 14, and the other end of the spring B6 is connected to the second slider 3. The first slider 2 and the second slider 3 are connected by the connecting spring 7. The hinge component includes two movable rods 4. The movable rod 4 is round, with double-eared pins 11 protruding from both ends. At the same time, hinge blocks (i.e., single-eared pins 12 that are adapted to be inserted into the double-eared pins 11) are protruding from the back of the first slider 2 and the second slider 3. The double-eared pins 11 have two thin plates arranged opposite each other, spaced apart, and have coaxial through holes. The single-eared pins 12 have mounting holes with the same diameter as the through holes of the double-eared pins 11. The double-eared pins 11 can be inserted into the hinge blocks, and then a small pin is inserted into the hole, thereby movably hinged the two movable rods 4 to the first slider 2 and the second slider 3 respectively.

[0023] Furthermore, four clamping members are provided in the mounting cavity 9 of the fixed cylinder 8. The four clamping members are equally spaced around the fixed circumference. The mounting seat 13 of each clamping member is fixedly connected to the inner side of the mounting cavity 9 of the fixed cylinder 8, so that the rebar can be more comprehensively clamped by the fixed cylinder 8 and the clamping members.

[0024] It should be noted that the free ends of the two movable rods 4 are hinged to the mounting base 13. Since the free ends of the movable rods 4 are also provided with double-eared pins 11, and a connecting block with two through holes is opened on the corresponding end face of the mounting base 13, the two through holes are equally spaced and located on the same horizontal line. Since the free ends of the movable rods 4 are also provided with double-eared pins 11, the end is inserted into the connecting block. Finally, the small pin is inserted into the hole, thereby movably hinged the two movable rods 4 to a mounting base 13 - that is, the clamping member and the fixed cylinder 8 are connected through the movable rods 4.

[0025] Furthermore, a buffer pad is provided at the bottom end of the locking screw 10. The buffer pad is a small round piece located at the contact position between the screw 10 and the anchor bar. When the screw 10 is rotated to make it fit inward against the outer surface of the anchor bar, the buffer pad prevents the screw 10 from damaging the anchor bar.

[0026] This utility model is a universal clamp for pulling out planted rebar. The planted rebar is inserted into the fixed cylinder 8 at a suitable position. At this time, due to the adaptation to the diameter size of the planted rebar, the first slider 2 and the second slider 3 slide in the mounting frame 14 respectively, so that the connected spring is compressed or stretched. During this process, the inner arc surface of the arc plate 1 of the clamping member always fits against the planted rebar for clamping. At the same time, the screw 10 at the upper end of each clamping member is turned to further clamp the planted rebar.

[0027] Currently, when clamping rebars that need to be pulled, a clamping device is required to fix the rebars to be tested. Existing clamping equipment often uses a small hammer to forcefully hammer the clamping plates into the collar of the equipment to clamp and fix the rebars. After the test, these clamping plates need to be hammered out one by one. The installation and disassembly process is time-consuming, labor-intensive, and inefficient, and it cannot be used for rebars of various diameters. Therefore, this solution designs a universal clamp. By setting a slider that is hinged to the fixed cylinder 8 through the hinged movable rod 4, and the slider can slide on the mounting frame 14, the clamping space can be adaptively expanded and reduced for adjustment, thus making it suitable for rebars of various diameters. Furthermore, the clamping component is connected to the fixed cylinder 8, making it very simple and convenient to install and disassemble.

[0028] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A universal clamp for pulling out reinforcing bars, characterized in that: Includes clamping components and a fixing sleeve (8); The clamping component includes an arc plate (1), a slider, and a hinge; a mounting frame (14) is provided on the back of the arc plate (1), and two sliders are movably provided in the mounting frame (14). The two sliders are connected to the inner side of the mounting frame (14) by a spring; the two sliders are respectively hinged to a hinge, and the free ends of the two hinges are hinged to the same mounting base (13). The fixed cylinder (8) has a mounting cavity (9), and multiple clamping members are arranged in the mounting cavity (9) and the multiple clamping members are arranged at equal intervals around the fixed circumference. The mounting seat (13) of each clamping member is fixedly connected to the inner side of the mounting cavity (9) of the fixed cylinder (8). During operation, anchor bars of different diameters are fitted into the fixed cylinder (8) and located between multiple clamping parts. Since the required anchor bar sizes are different, the slider on the back of the arc plate (1) slides in the mounting frame (14), and the spring is compressed or rebounded, so that the arc surface of the arc plate (1) fits the anchor bar, thereby clamping it.

2. The universal clamp for pulling out planting rebar according to claim 1, characterized in that: A rectangular protrusion is provided inside the mounting frame (14), and the two sliders are the first slider (2) and the second slider (3), respectively. The first slider (2) and the second slider (3) are fitted and inserted into the rectangular protrusion, and can slide along the rectangular protrusion.

3. The universal clamp for pulling out planting rebar according to claim 1, characterized in that: The spring includes spring A (5), spring B (6) and connecting spring (7); One end of spring A (5) is connected to the upper inner bottom surface of the mounting frame (14), and the other end is connected to the first slider (2). One end of spring B (6) is connected to the lower inner bottom surface of the mounting frame (14), and the other end is connected to the second slider (3). One end of connecting spring (7) is connected to the first slider (2), and the other end is connected to the second slider (3), thereby connecting the first slider (2), the second slider (3), and the mounting frame (14).

4. The universal clamp for pulling out planting rebar according to claim 1, characterized in that: The hinge includes two movable rods (4); both ends of the movable rods (4) are provided with double-eared pins (11), and the double-eared pins (11) have two thin plates arranged opposite each other, the two thin plates are spaced apart and have coaxial through holes.

5. The universal clamp for pulling out planting rebar according to claim 4, characterized in that: The two movable rods (4) are respectively connected to the hinge blocks provided on the first slider (2) and the second slider (3) by double ear pins (11), and the sliders are connected to the hinges by a small pin inserted into the through hole.

6. The universal clamp for pulling out planting rebar according to claim 1, characterized in that: The upper end of the arc plate (1) is provided with a through hole with an internal thread. A screw (10) is inserted into the through hole. After the rebar is installed in the middle of multiple clamping parts, the screw (10) is turned so that the screw (10) is close to the rebar and clamps it.

7. The universal clamp for pulling out planting rebar according to claim 6, characterized in that: The screw (10) has a buffer pad, which is located at the end of the screw (10) that contacts the rebar, to prevent the screw (10) from damaging the rebar when it is turned.

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