Fixture for testing tensile strength of steel bar welded joint

Abstract

The utility model discloses a fixture for testing the tensile strength of a steel bar welded joint, which comprises two supporting columns, fixing plates are fixedly arranged at the tops of the inner side walls of the two supporting columns, a vibration motor is fixedly arranged at the bottom of one fixing plate, and an installation sleeve frame is fixedly arranged at the bottom of an output shaft of the vibration motor. A steel bar connector is arranged in the middle of the bottom of the mounting sleeve frame, L-shaped steel bars are arranged at the two ends of the steel bar connector, a hidden cavity is formed in the mounting sleeve frame, a two-way threaded rod is rotationally connected into the hidden cavity, threaded sleeves are in threaded connection with the two ends of the outer side wall of the two-way threaded rod, and clamping plates are fixedly mounted at the bottoms of the threaded sleeves through limiting sliding blocks. The two-way threaded rod is driven by the rotating disc, synchronous movement of the two clamping plates is achieved, the operation steps of clamping operation of the steel bar connector are simplified, and therefore the fixing efficiency of the steel bar connector is improved.

Description

Technical Field

[0001] The utility model relates to the technical field related to construction, in particular to a clamp for testing the tensile strength of a steel bar welding joint. Background Art

[0002] In the rapidly developing economic construction of our country, construction projects play an important role. With the improvement of people's living standards and the rise of a large number of high-rise buildings, the country's quality requirements for construction projects are getting higher and higher, which requires construction projects to develop in a higher level. Rebar mechanical connection is an indispensable and important part of the connection of steel bar raw materials in the main skeleton of construction projects. In order to ensure the quality of construction projects, relevant national departments have issued a series of standards and regulations, which have greatly promoted the development of steel mechanical connection technology and the improvement of construction project quality.

[0003] A current device for detecting steel bar connection joints for construction, such as the one described in the patent with announcement number CN208459158U, comprises: a support column, wherein two support columns are provided, a first ring is fixedly installed on the inner side of one support column, a cylinder is installed on the inner side of the other support column, a second ring is fixedly installed on the end of the cylinder away from the other support column through a connecting rod, L-shaped steel bars are provided on the first ring and the second ring, and the two L-shaped steel bars are connected by a steel bar connector, a first top plate is provided on the top of one support column, a vibration motor is provided on the bottom of the first top plate, a clamping device is provided on the bottom of the vibration motor, the clamping device is connected to the steel bar connector, and a second top plate is provided on the top of the other support column. The utility model is provided with a vibration motor on the first top plate, the vibration motor drives the steel bar connector to vibrate through the clamping device, and the cylinder is started while vibrating, so that the device can test the tensile strength of the steel bar connector under vibration.

[0004] With respect to the above-mentioned related technologies, the applicant has discovered that a construction steel bar connection joint detection device, when in use, achieves the clamping and fixing of the steel bar connection head by the clamping plate by manually driving the knob. However, when driving the two clamping plates, the two knobs need to be driven in sequence respectively, which increases the operation steps of the steel bar connection head in the clamping operation, thereby reducing the efficiency of the steel bar connection head when being fixed. Utility Model Content

[0005] The purpose of the utility model is to provide a clamp for testing the tensile strength of steel bar welded joints, so as to solve the problem that when the device proposed in the above background technology is used, the clamping plate clamps and fixes the steel bar connector by manually driving the knob, but when the two clamping plates are driven, the two knobs need to be driven in sequence respectively, which increases the operating steps of the steel bar connector in the clamping operation, thereby reducing the efficiency of the steel bar connector when being fixed.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fixture for testing the tensile strength of steel bar welded joints, comprising pillars, wherein two pillars are provided, and the tops of the inner walls of the two pillars are fixedly provided with fixing plates, a vibration motor is fixedly installed at the bottom of one of the fixing plates, and a mounting sleeve is fixedly installed at the bottom of the output shaft of the vibration motor, a steel bar connector is provided at the middle position of the bottom of the mounting sleeve, and L-shaped steel bars are provided at both ends of the steel bar connector, a dark cavity is provided inside the mounting sleeve, a bidirectional threaded rod is rotatably connected inside the dark cavity, and threaded sleeves are threadedly connected at both ends of the outer wall of the bidirectional threaded rod, a clamping plate is fixedly installed on the bottom of the threaded sleeve through a limiting slider, and a limiting sliding groove for sliding the limiting slider is provided on the bottom wall inside the dark cavity.

[0007] By adopting the above technical solution, the steel bar connecting head can be quickly clamped.

[0008] Preferably, the two fixing plates are connected via a buffer connector, a vibration meter is fixedly mounted on the top of one of the fixing plates, and an outer side wall of the vibration meter is connected to the clamping plate via a connecting line.

[0009] By adopting the above technical solution, vibration monitoring of the steel bar connection head can be performed.

[0010] Preferably, a collar is fixedly mounted on one end of each of the two L-shaped steel bars, one collar is fixedly mounted on the inner wall of one of the pillars, and a cylinder is provided between the other collar and the pillar.

[0011] By adopting the above technical solution, it is possible to perform vibration testing on the steel bar connection head.

[0012] Preferably, the inner side wall of the clamping plate is arc-shaped, and a rubber gasket is fixedly mounted on the inner side wall of the clamping plate.

[0013] By adopting the above technical solution, the clamping effect of the steel bar connecting head can be improved.

[0014] Preferably, a turntable is fixedly mounted on one end of the bidirectional threaded rod.

[0015] By adopting the above technical solution, the turntable can be driven.

[0016] Preferably, a ratchet is fixedly mounted on the other end of the bidirectional threaded rod, a pawl is rotatably connected to one end of the outer wall of the mounting sleeve close to the ratchet, the pawl is meshed with the ratchet, and a return spring is elastically connected between the pawl and the mounting sleeve.

[0017] By adopting the above technical solution, the bidirectional threaded rod can be self-locked.

[0018] Preferably, a toggle block is fixedly provided at one end of the pawl.

[0019] By adopting the above technical solution, the meshing state of the pawl and the ratchet wheel can be adjusted.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] Firstly, by providing a bidirectional threaded rod, a turntable, a steel bar connector, an L-shaped steel bar, a mounting frame, a concealed cavity, a threaded sleeve, a limit slider, a limit slide groove and a clamping plate, the turntable drives the bidirectional threaded rod to realize the synchronous movement of the two clamping plates, simplifying the operation steps of the steel bar connector in the clamping operation, thereby improving the efficiency of the steel bar connector in fixing;

[0022] Secondly, by providing a steel bar connector, a ratchet, a pawl, a reset spring, a bidirectional threaded rod and a toggle block, the engagement between the ratchet and the pawl realizes automatic locking of the bidirectional threaded rod after being driven, thereby avoiding the phenomenon of reversal of the bidirectional threaded rod after being accidentally touched by external force during the clamping and fixing of the steel bar connector, thereby further improving the stability of the device when clamping the steel bar connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the internal structure of the mounting frame of the utility model;

[0025] Figure 3 For the utility model Figure 2 The enlarged structural diagram at A in the middle;

[0026] Figure 4 It is a schematic diagram of the ratchet and pawl connection structure of the utility model.

[0027] In the figure: 1. pillar; 2. cylinder; 3. vibration meter; 301. connecting line; 4. vibration motor; 5. fixing plate; 6. collar; 7. L-shaped steel bar; 8. steel bar connector; 9. clamp; 10. mounting bracket; 1001. dark cavity; 11. bidirectional threaded rod; 1101. turntable; 12. threaded sleeve; 13. reset spring; 14. limit slider; 1401. limit slide groove; 15. ratchet; 16. pawl; 1601. toggle block. DETAILED DESCRIPTION

[0028] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "page", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0031] It should be noted that the structures not introduced in the present invention do not involve the design points and improvement directions of the present invention, and all adopt the existing technology. The above content belongs to the technical cognition scope of the inventor. Since the technical content in this field is vast and too complicated, the above content of this application does not necessarily constitute the prior art.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", "provided with", etc. should be understood in a broad sense, for example, it 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 the present invention can be understood according to specific circumstances.

[0033] The following is combined with Figure 1-4 The utility model is described in further detail.

[0034] See also Figure 1 , Figure 2 and Figure 3The utility model provides an embodiment: a fixture for testing the tensile strength of a steel bar welded joint, comprising a pillar 1, two pillars 1, the tops of the inner walls of the two pillars 1 are fixed with a fixing plate 5, the two fixing plates 5 are connected by a buffer connector, a vibration meter 3 is fixedly installed on the top of a fixing plate 5, the outer wall of the vibration meter 3 is connected to the clamping plate 9 through a connecting line 301, a vibration motor 4 is fixedly installed on the bottom of a fixing plate 5, and a mounting bracket 10 is fixedly installed on the bottom of the output shaft of the vibration motor 4;

[0035] A steel bar connector 8 is provided in the middle position at the bottom of the mounting sleeve 10, and L-shaped steel bars 7 are provided at both ends of the steel bar connector 8. A collar 6 is fixedly installed on one end of each of the two L-shaped steel bars 7. A collar 6 is fixedly installed on the inner side wall of a pillar 1, and a cylinder 2 is provided between the other collar 6 and the pillar 1. The cylinder 2 is fixedly installed between the pillar 1, and the telescopic end of the cylinder 2 is fixedly installed between a collar 6. A dark cavity 1001 is provided inside the mounting sleeve 10, and a bidirectional threaded rod 11 is rotatably connected inside the dark cavity 1001. A turntable 1101 is fixedly installed on one end of the bidirectional threaded rod 11. Both ends of the outer side wall of the bidirectional threaded rod 11 are threadedly connected with a threaded sleeve 12. A clamping plate 9 is fixedly installed on the bottom of the threaded sleeve 12 through a limiting slider 14. The inner side wall of the clamping plate 9 is arc-shaped, and a rubber gasket is fixedly installed on the inner side wall of the clamping plate 9. A limiting slide groove 1401 is provided on the bottom wall of the dark cavity 1001 for the limiting slider 14 to slide.

[0036] When fixing the L-shaped steel bar 7 and the steel bar connector 8, the two L-shaped steel bars 7 and the two ends of the steel bar connector 8 are fixedly installed, and then the steel bar connector 8 is placed between the two clamping plates 9, and then the turntable 1101 is manually rotated to drive the bidirectional threaded rod 11 to rotate synchronously inside the threaded sleeve 12. Through the rotation of the bidirectional threaded rod 11, the two threaded sleeves 12, the limit slider 14 and the clamping plate 9 are driven to move closer to the position of the steel bar connector 8 under the limit of the limit slide groove 1401, until the two clamping plates 9 clamp the steel bar connector 8 , the effective clamping of the steel bar connector 8 can be completed, and then the two L-shaped steel bars 7 are fixed by the ring 6, and the cylinder 2 is started to perform a tensile strength test on the L-shaped steel bars 7, and then the vibration motor 4 is started to perform a vibration test on the two L-shaped steel bars 7, and real-time monitoring is performed through the cooperation of the vibration meter 3 and the connecting line 301, and then the bidirectional threaded rod 11 is driven by the turntable 1101 to achieve synchronous movement of the two clamping plates 9, simplifying the operation steps of the steel bar connector 8 in the clamping operation, thereby improving the efficiency of the steel bar connector 8 when fixing.

[0037] See also Figure 1-Figure 4A ratchet 15 is fixedly mounted on the other end of the bidirectional threaded rod 11, and a pawl 16 is rotatably connected to one end of the outer wall of the mounting sleeve 10 close to the ratchet 15, the pawl 16 is meshed with the ratchet 15, and a return spring 13 is elastically connected between the pawl 16 and the mounting sleeve 10;

[0038] When the fixed clamping plate 9 is self-locked, the synchronous belt ratchet 15 rotates through the rotation of the bidirectional threaded rod 11, and the pawl 16 is engaged with the ratchet 15, so that the ratchet 15 rotates while the pawl 16 is moved to one side and reset again through the reset spring 13, until the clamping plate 9 completes the clamping of the steel bar connector 8, and the driving of the bidirectional threaded rod 11 is stopped, and the ratchet 15 stops rotating synchronously, and the pawl 16 engages with the ratchet 15 for self-locking, thereby realizing the bidirectional threaded rod 11 is self-locking, and when the bidirectional threaded rod 11 needs to be rotated in the opposite direction, the toggle block 1601 is moved to control the pawl 16 to disengage from the ratchet 15, so that the bidirectional threaded rod 11 can be driven again, and then through the engagement between the ratchet 15 and the pawl 16, the automatic locking of the bidirectional threaded rod 11 after driving is achieved, avoiding the phenomenon of reversal of the bidirectional threaded rod 11 after being accidentally touched by external force during the clamping and fixing of the steel bar connector 8, and further improving the stability of the device when clamping the steel bar connector 8.

[0039] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A fixture for testing the tensile strength of a steel bar welded joint, comprising a support (1), characterized in that: The pillars (1) are provided with two, the tops of the inner side walls of the two pillars (1) are fixedly provided with fixing plates (5), the bottom of one of the fixing plates (5) is fixedly provided with a vibration motor (4), the bottom of the output shaft of the vibration motor (4) is fixedly provided with a mounting sleeve (10), a steel bar connector (8) is provided at the middle position of the bottom of the mounting sleeve (10), both ends of the steel bar connector (8) are provided with L-shaped steel bars (7), a dark cavity (1001) is provided inside the mounting sleeve (10), a bidirectional threaded rod (11) is rotatably connected inside the dark cavity (1001), both ends of the outer side walls of the bidirectional threaded rod (11) are threadedly connected with threaded sleeves (12), a clamping plate (9) is fixedly provided at the bottom of the threaded sleeve (12) via a limiting slider (14), and a limiting sliding groove (1401) for the limiting slider (14) to slide is provided on the bottom wall inside the dark cavity (1001).

2. A fixture for testing the tensile strength of a steel bar welded joint according to claim 1, characterized in that: The two fixing plates (5) are connected via a buffer connector, a vibration meter (3) is fixedly mounted on the top of one of the fixing plates (5), and the outer side wall of the vibration meter (3) is connected to the clamping plate (9) via a connecting line (301).

3. A fixture for testing the tensile strength of a steel bar welded joint according to claim 1, characterized in that: A collar (6) is fixedly mounted on one end of each of the two L-shaped steel bars (7); one collar (6) is fixedly mounted on the inner side wall of one of the pillars (1); and a cylinder (2) is provided between the other collar (6) and the pillar (1).

4. A fixture for testing the tensile strength of a steel bar welded joint according to claim 1, characterized in that: The inner side wall of the clamping plate (9) is arc-shaped, and a rubber gasket is fixedly mounted on the inner side wall of the clamping plate (9).

5. A fixture for testing the tensile strength of a steel bar welded joint according to claim 2, characterized in that: A rotating disk (1101) is fixedly mounted on one end of the bidirectional threaded rod (11).

6. A fixture for testing the tensile strength of a steel bar welded joint according to claim 5, characterized in that: A ratchet (15) is fixedly mounted on the other end of the bidirectional threaded rod (11); a pawl (16) is rotatably connected to one end of the outer wall of the mounting sleeve (10) close to the ratchet (15); the pawl (16) is meshed with the ratchet (15); and a return spring (13) is elastically connected between the pawl (16) and the mounting sleeve (10).

7. A fixture for testing the tensile strength of a steel bar welded joint according to claim 6, characterized in that: A toggle block (1601) is fixedly disposed at one end of the ratchet pawl (16).

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