CN209745448U - Bolt tension tester - Google Patents

Abstract

The utility model discloses a bolt tension tester, which comprises an instrument body, a measuring circuit, a detecting probe and a probe fixing frame; the probe fixing frame comprises a cylinder, a clamping bulge, a connecting rope and a sucker; the sucker comprises a sucker main body, a sucker positioning column and a cylindrical positioning bulge, wherein the sucker main body is used for being adsorbed on a bolt installation surface; the movable end of the connecting rope is detachably connected with the movable end of the positioning bulge; an external thread shell matched with the barrel is arranged outside the detection probe, and the detection probe is in threaded connection with the inside of the barrel through the external thread shell; and one side of the instrument body is provided with a sampling interface connected with the measuring circuit, and the detection probe is electrically connected with the sampling interface through a lead. The tester is simple in structure and reasonable in design, and can be directly in stable contact with the bolt in the working state so as to achieve the purpose of directly measuring the stress of the bolt in the working state.

Description

Bolt tension tester

Technical Field

The utility model relates to a bolt tension tester.

Background

The bolt stress tester can accurately and quickly measure the stress and the strain of the fastened bolt, has the characteristics of convenience in use, visual display, convenience in carrying and the like, and is an important detection device in bolt processing. When the detection equipment is used for detecting the unused bolt, the detection equipment is very convenient, but if the stress of the bolt in a working state needs to be detected, the probe of the detection equipment can only be placed at the bolt head or the thread end of the bolt, when the bolt is arranged at a horizontal position, a ceiling or a corner and the like, the probe cannot be fixed, the probe needs to be manually fixed on the bolt, time and labor are wasted, and measurement errors are likely to be caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the technical problem, provide a bolt tension tester, this tester simple structure, reasonable in design can be directly with the bolt stable contact under the operating condition to reach the purpose of the bolt stress under the direct measurement operating condition.

In order to achieve the above object, the utility model adopts the following technical scheme:

A bolt tension tester is used for measuring the bolt tension under a working state and comprises an instrument body, wherein a measuring circuit is arranged in the instrument body; the device also comprises a detection probe and a probe fixing frame; the probe fixing frame comprises a barrel body, at least three cylindrical clamping bulges, a connecting rope and suckers, wherein the middle part of the barrel body is provided with an internal thread; the sucker comprises a sucker main body, a sucker positioning column and a cylindrical positioning bulge, wherein the sucker main body is used for being adsorbed on a bolt installation surface; the movable end of the connecting rope is detachably connected with the movable end of the positioning bulge; an external thread shell matched with the barrel is arranged outside the detection probe, and the detection probe is in threaded connection with the inside of the barrel through the external thread shell; and one side of the instrument body is provided with a sampling interface connected with the measuring circuit, and the detection probe is electrically connected with the sampling interface through a lead.

concretely speaking, the probe fixing frame further comprises a matched tightening rod which is in one-to-one correspondence with the connecting ropes and used for replacing the connecting ropes, one end of the tightening rod is sleeved on the clamping protrusion, and the other end of the tightening rod is sleeved outside the corresponding positioning protrusion.

Preferably, the clamping protrusions and the positioning protrusions are cylindrical rubber protrusions.

As another preferable mode, a magnetic temperature probe capable of automatically performing temperature compensation is built in the detection probe.

Compared with the prior art, the utility model discloses following beneficial effect has:

(1) The utility model discloses ingenious set up the probe mount come on measuring probe fixes the bolt under operating condition to, no matter be special mounted position such as corner department, vertical face or ceiling, this probe mount all can be installed, and then make with the stable laminating of measuring probe to the bolt, solved the difficult problem with the bolt fastening of probe, the measurement of bolt tension under the light realization operating condition.

(2) The utility model discloses a probe mount main part only includes barrel, sucking disc and connection rope, and wherein, the barrel is used for screw thread installation measuring probe to the degree of depth of measuring probe spiral business turn over also can adjust accordingly, and the adsorption position of sucking disc then can be with making the barrel fix the arbitrary position on the installation face outside the bolt, reunion connection rope's setting, the sucking disc can realize giving the barrel pulling force in the direction of difference, makes the barrel atress balanced, and stabilize on the installation face of bolt. Furthermore, the utility model discloses still can adjust the direction and the size of pulling force through the position of adjustment sucking disc, further ensure that the barrel can be stabilized on the installation face of bolt, can also combine supporting pole of tightening, make the barrel fixed with the relative position of sucking disc, further ensure the stability of locating the barrel like conical surface, ceiling. The probe fixing frame has strong adaptability and can be suitable for various mounting surfaces.

(3) The utility model discloses only need carry out the improvement of adaptability to measuring probe, be about for its outside set up with barrel assorted external screw thread casing can, and need not other changes, can reach the purpose, improve with low costs, and do not increase the preparation degree of difficulty.

(4) The utility model discloses can adopt ultrasonic signal to measure the bolt pulling force as measuring probe, measuring probe's signal receiving and dispatching all is along the bolt axial, and the utility model discloses a probe mount acts on the installation face of bolt, and the barrel is fixed with the measuring probe side, also can not direct action in the measuring probe in the external screw thread casing, consequently can not influence its measurement precision completely.

(5) The utility model discloses a probe mount still can regard as solitary accessory to use, a probe mount can with many measuring apparatu adaptations, adaptability, practicality are strong.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of the structure of the probe fixing frame of the present invention.

Fig. 3 is another schematic structural diagram of the probe holder of the present invention.

Detailed Description

The present invention will be further described with reference to the following description and examples, which include but are not limited to the following examples.

The embodiment provides a bolt tension tester, and the problem that the measuring probe in the prior art can not be fixed to the bolt under the working condition, and the measuring error can be caused even if the measuring probe wastes time and labor. Specifically, as shown in fig. 1 and fig. 2, the main body of the tester adopted in the present embodiment is basically the same as that in the prior art, and both includes an instrument body 1 and a detection probe 2, and a measurement circuit is arranged in the instrument body; the instrument body 1 and the measuring circuit are not improved, and the structure, the working principle and the like of the instrument body are the same as those of the prior art, so that the instrument body and the measuring circuit are not described in detail. The biggest improvement of the embodiment is that a probe fixing frame is arranged.

in detail, the structure design of the probe fixing frame is ingenious, and the probe fixing frame comprises a barrel 3 with an internal thread in the middle, at least three cylindrical clamping bulges 4 uniformly arranged on the outer wall of the barrel, a connecting rope 5 arranged at the movable end of each bulge, and suckers corresponding to the connecting ropes one by one; the sucker comprises a sucker main body 6 for being adsorbed on a bolt installation surface, a sucker positioning column 61 arranged at the top of the sucker main body, and a cylindrical positioning bulge 62 arranged on the side surface of the sucker positioning column; the main body of the sucker can be a common rubber sucker in the prior art, the sucker positioning column is arranged for conveniently using the sucker for carrying out suction locking operation, and the positioning bulge 62 is arranged for connecting the positioning bulge with the connecting rope; when the device is used, the barrel 3 is buckled on the bolt mounting surface, the bolt is covered in the barrel, the sucker acts on the outer wall of the barrel through the connecting rope to provide tension for the barrel 3, generally, the mounting surface is flat, so that the clamping protrusion on the outer wall of the barrel can be higher than the positioning protrusion 62, the resultant force of the tension received by the barrel faces the bolt, and the barrel can be stably covered on the mounting surface of the bolt to realize the mounting of the measuring probe. And on the installation face of unevenness, can with the expansion end of connecting rope 5 can dismantle with the expansion end of location arch 62 and be connected promptly, adopt like the mode of making the slipknot to connect promptly, so can extend or shorten the length of connecting the rope linkage segment, on the installation face of unevenness, can adsorb near the bolt position as far as possible flat (even can adsorb on the face that the installation face is adjacent) with the sucking disc, and rethread fine setting makes the pulling force that the barrel receives resultant force orientation bolt, can realize the stable installation of barrel as above. On the conical or arc surface, as shown in fig. 3, a matched tightening rod 7 can be arranged, one end of the tightening rod 7 is sleeved outside the clamping protrusion 4, the other end of the tightening rod is sleeved outside the corresponding positioning protrusion 62, and the pulling force is changed into the pushing force, so that the installation of the cylinder on the arc surface or the conical surface can be realized. In view of the fact that the installation position of the suction cup is not limited, in the present embodiment, the clamping protrusion 4 and the positioning protrusion 62 are both cylindrical rubber protrusions, which have strong toughness and can rotate within a certain range, so as to ensure that the tightening rod 7 can still play a role in connection when the installation position of the suction cup is changed. Certainly, the barrel can select for use light materials such as PVC to make in this embodiment, and this physical size of probe and weight are all less, consequently do not all can not be very big with the power that tightens pole 7 and receive, also can set up to the rubber end through tightening pole both ends and connect, can enough play the effect that supports and provide the thrust, can avoid again that it receives great power and take place damages such as deformation.

The measuring probe 2 is directly arranged in the cylinder body, so that the measurement of the bolt which is horizontally or obliquely arranged can be realized, but the bolts with uneven mounting surfaces, such as the tops or cambered surfaces, are easy to fall out, and, since the measuring probe 2 is not stable, if an external force accidentally touches the cylinder or pulls the measuring probe, the measuring probe 2 may be displaced, so the embodiment also improves the adaptability of the measuring probe 2, namely, the outer part of the measuring probe is arranged into an external thread shell matched with the cylinder body, the measuring probe is connected in the cylinder body through the external thread shell in a threaded manner and can also enter and exit the cylinder body through the threaded rotation, even if the bolt falls into the mounting surface or the cylinder is not attached to the mounting surface, the measuring probe can be rotated to be inserted into the bolt and then attached to the bolt, so that the purpose of measurement can be achieved. And instrument body one side is equipped with the sampling interface who links to each other with measuring circuit, measuring probe 2 is connected with the sampling interface electricity through the wire, promptly install the generator mounting and after the measuring probe 2 is installed to the spiral, say the wire again and insert the sampling interface, can measure the operation.

In addition, in this embodiment, a magnetic temperature probe is built in the ultrasonic signal generator 2, so as to simultaneously implement temperature detection, and the magnetic temperature probe may be any one of the magnetic temperature probes in the prior art that can automatically perform temperature compensation, which is not specifically limited herein.

The measurement of this embodiment is in order can easily realize the bolt stress measurement under operating condition, and its simple structure, design benefit, operation labour saving and time saving, and measurement accuracy is also higher.

The above embodiment is only one of the preferred embodiments of the present invention, and should not be used to limit the protection scope of the present invention, but all the insubstantial changes or modifications made in the spirit and the idea of the main design of the present invention, the technical problems solved by the embodiment are still consistent with the present invention, and all should be included in the protection scope of the present invention.

Claims (4)

1. A bolt tension tester is used for measuring the bolt tension under a working state and comprises an instrument body (1), wherein a measuring circuit is arranged in the instrument body; the device is characterized by also comprising a detection probe (2) and a probe fixing frame; the probe fixing frame comprises a barrel (3) with an internal thread in the middle, at least three cylindrical clamping bulges (4) uniformly arranged on the outer wall of the barrel, a connecting rope (5) arranged at the movable end of each bulge, and suckers corresponding to the connecting ropes one to one; the sucker comprises a sucker main body (6) used for being adsorbed to a bolt installation surface, a sucker positioning column (61) arranged at the top of the sucker main body, and a cylindrical positioning bulge (62) arranged on the side surface of the sucker positioning column; the movable end of the connecting rope (5) is detachably connected with the movable end of the positioning bulge (62); an external thread shell matched with the barrel is arranged outside the detection probe (2), and the detection probe is in threaded connection with the inside of the barrel through the external thread shell; one side of the instrument body is provided with a sampling interface (8) connected with the measuring circuit, and the detection probe (2) is electrically connected with the sampling interface through a lead (9).

2. The bolt tension tester according to claim 1, wherein the probe fixing frame further comprises a matched tightening rod (7) which is in one-to-one correspondence with the connecting ropes and is used for replacing the connecting ropes, one end of the tightening rod (7) is sleeved on the clamping protrusion (4), and the other end of the tightening rod is sleeved outside the corresponding positioning protrusion (62).

3. The bolt tension tester according to claim 2, wherein the clamping protrusion (4) and the positioning protrusion (62) are cylindrical rubber protrusions.

4. The bolt tension tester according to any one of claims 1 to 3, wherein a magnetic temperature probe capable of automatically performing temperature compensation is built in the detection probe (2).