CN212844668U - Clamping head for tensile test of steel cable - Google Patents
Clamping head for tensile test of steel cable Download PDFInfo
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- CN212844668U CN212844668U CN202021199244.4U CN202021199244U CN212844668U CN 212844668 U CN212844668 U CN 212844668U CN 202021199244 U CN202021199244 U CN 202021199244U CN 212844668 U CN212844668 U CN 212844668U
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- jaw
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Abstract
The utility model provides a steel cable tensile test chuck, which comprises a chuck main body, an adjusting threaded sleeve, an adjusting nut and a multi-clack jaw; the chuck main body is of a hollow cylindrical structure, a plurality of inclined holes which are uniformly distributed relative to the central axis are formed in the front end face of the chuck main body, and each inclined hole is matched with one clamping jaw; the rear end face of the chuck main body is provided with an axial threaded through hole which is used for being matched with the adjusting threaded sleeve; the jaw main body structure can move along the inclined hole; the jaws are provided with gripping surfaces which are parallel to the central axis of the chuck main body when the jaws are installed in the inclined holes, and when a plurality of jaws synchronously move along the inclined holes, the corresponding gripping surfaces synchronously approach or depart from each other; the rear part of the adjusting screw sleeve is in coaxial threaded fit with the adjusting nut; and a steel grommet for connecting with the stretching equipment is fixed on the rear end face of the adjusting nut. Adopt the utility model discloses afterwards, be connected with tensile equipment through predetermined cable wire ring, and surveyed cable wire disect insertion dop can be experimental, has simplified work flow, has improved work efficiency greatly.
Description
Technical Field
The utility model relates to a cable wire tensile test technical field specifically is a cable wire tensile test dop for the cable wire prestretching test of cable wire subassembly before the preparation.
Background
Before the steel cable assembly is manufactured, a steel cable is required to be subjected to a pre-stretching test so as to verify whether relevant parameters of the steel cable meet requirements. At present, when a steel cable pre-stretching test is carried out, steel cable rings are woven at two ends of a steel cable and are connected with stretching equipment through the steel cable rings. The number of the steel cables to be tested in each test is large, the specifications are large, and the knitting process is complex and tedious, so that the working efficiency is low.
Disclosure of Invention
For solving the problem that prior art exists, the utility model provides a cable wire tensile test dop is connected with tensile equipment through the steel grommet of predetermineeing on the dop, and surveyed cable wire disect insertion dop can be experimental, has simplified work flow, has improved work efficiency greatly.
The technical scheme of the utility model is that:
the steel cable tensile test chuck comprises a chuck main body, an adjusting threaded sleeve, an adjusting nut and a multi-jaw claw;
the chuck main body is of a hollow cylindrical structure, a plurality of inclined holes which are uniformly distributed relative to the central axis of the chuck main body are formed in the front end face of the chuck main body, the number of the inclined holes is the same as that of the clamping jaws, the inclined direction of each inclined hole is inclined from the inner side of the front end face to the outer side of the front end face, which is gradually close to the central axis of the chuck main body, and each inclined hole is used for being matched with one clamping jaw; the center of the front end surface of the chuck main body is also provided with an axial through hole;
a cavity for the jaw to move is arranged behind the front end face of the chuck main body, and the axial length and the radial size of the cavity meet the space requirement of the jaw in the process of moving back and forth; the rear end face of the chuck main body is provided with an axial threaded through hole which is used for being in threaded fit with the adjusting threaded sleeve;
the main body structure of the clamping jaw is matched with the inclined hole on the front end face of the chuck main body, so that the clamping jaw can move along the inclined hole; the clamping jaws are also provided with gripping surfaces, when the clamping jaws are arranged in the inclined holes in the front end surface of the chuck main body, the gripping surfaces of the clamping jaws are parallel to the central axis of the chuck main body, and when a plurality of clamping jaws synchronously move along the inclined holes, the corresponding gripping surfaces synchronously approach or depart from each other, so that the steel cable is fastened or loosened;
the front part of the adjusting threaded sleeve is coaxially matched with the rear part of the chuck main body in a threaded manner, and the rear part of the adjusting threaded sleeve is coaxially matched with the adjusting nut in a threaded manner; and a steel grommet for connecting with the stretching equipment is fixed on the rear end face of the adjusting nut.
Furthermore, the number of the claws is three.
Furthermore, the center of the rear end face of the adjusting nut is also provided with a through hole for enabling the measured steel cable to pass through the steel cable tensile test chuck when the measured steel cable is too long, so that the measured steel cable is prevented from being accumulated in the chuck.
Furthermore, the jaw is a cylinder-like body, and is obtained by cutting a cylinder body by a plurality of different surfaces: the diameter of the cylinder is the same as that of the inclined hole on the front end surface of the chuck main body; the front part of the jaw is obtained by beveling the lower part of a cylinder by three adjacent planes which are a first plane, a second plane and a third plane in sequence, wherein the second plane is intersected with the central axis of the cylinder, and the included angle between the second plane and the central axis of the cylinder is equal to the included angle between the axis of an inclined hole on the front end surface of the chuck main body and the central axis of the chuck main body; the included angle between the first plane and the third plane is 360 degrees/n, and n is the number of the claws.
Furthermore, the front end face of the clamping jaw is perpendicular to the second plane, and the rear end face of the clamping jaw is parallel to the front end face of the clamping jaw.
Furthermore, the rear end face of the clamping jaw is also provided with a radial boss; the middle rear part of the jaw is obtained by cutting a cylinder along the axial direction of the jaw by a fourth plane, a fifth plane and a sixth plane, and the fourth plane, the fifth plane and the sixth plane are correspondingly connected with the first plane, the second plane and the third plane; the fourth, fifth and sixth planes are parallel to the jaw body axis.
Furthermore, a clamping sleeve is sleeved on the steel cable to be detected, and when the steel cable is clamped, the part of the steel cable to be detected, which is sleeved with the clamping sleeve, is clamped.
Advantageous effects
The utility model provides a cable wire tensile test dop is connected with tensile equipment through the steel grommet of predetermineeing on the dop, and surveyed cable wire disect insertion dop can be experimental, has saved the braiding time of cable wire before tensile test, has simplified work flow, has improved work efficiency greatly.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1: a structure diagram of the chuck;
wherein: 1. a chuck body; 2. adjusting a threaded sleeve; 3. adjusting the nut; 4. a claw; 5. a card sleeve;
FIG. 2: view B of fig. 1;
FIG. 3: view a of fig. 1;
FIG. 4: the chuck is in a working schematic view;
wherein: 6. clamping a head; 7. a steel cable to be tested; 8. the equipment is connected with a steel cable;
FIG. 5: a chuck main body is a schematic perspective view;
FIG. 6: a cross-sectional view of the chuck body;
FIG. 7: a schematic end view of the chuck body;
FIG. 8: a jaw is a schematic perspective view;
FIG. 9: a jaw front view;
FIG. 10: a jaw end face schematic view;
FIG. 11: a front view of the ferrule;
FIG. 12: the end face of the cutting sleeve is schematic;
FIG. 13: the chuck body and the jaws are schematically matched.
Detailed Description
The following detailed description of embodiments of the invention is intended to be illustrative, and not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
The steel cable tensile test chuck provided by the embodiment aims to provide a universal joint between a tested steel cable and tensile equipment, so that the steel cable ring woven on the spot of each tested steel cable is not required to be connected with the tensile equipment during tensile test, and the tested steel cable can be quickly inserted into the steel cable tensile test chuck for testing.
To this end, as shown in fig. 1, the cable tension test chuck proposed in this embodiment includes a chuck body 1, an adjusting screw sleeve 2, an adjusting nut 3, and multi-lobed jaws 4, which are three-lobed in this embodiment.
As shown in fig. 5 to 7, the chuck main body has a hollow cylindrical structure. The front end face of the chuck main body is provided with a plurality of inclined holes which are uniformly distributed relative to the central axis of the chuck main body, the number of the inclined holes is the same as that of the clamping jaws, the inclined direction of the inclined holes is inclined from the inner side of the front end face to the outer side of the front end face, which is gradually close to the central axis of the chuck main body, and the three inclined holes are used for being correspondingly matched with the three-jaw clamping jaws. In this embodiment, the chuck main body further has an axial through hole in the center of the front end surface, and the main function is that the steel cable to be tested can extend into the chuck and further can pass through the steel cable tensile test chuck. In this embodiment, the three inclined holes are partially overlapped outside the front end face of the chuck main body, and the axial through hole and the three inclined holes are also overlapped, so that the design of the central axial through hole cannot be visually seen simply from the drawing, but the front end face of the chuck main body is provided with the central through hole as can be seen from fig. 5 and 7.
The front end face of the chuck main body is followed by a cavity for the jaw to move, and the cavity has requirements on the axial length and the radial size and mainly meets the space requirement in the process of moving the jaw back and forth. The rear end face of the chuck main body is provided with an axial threaded through hole for being in threaded fit with the adjusting threaded sleeve.
Fig. 8-10 show the jaws. Two basic requirements for the jaw are that the jaw main body can be matched with an inclined hole on the front end face of the chuck main body, so that the jaw can move along the inclined hole; and secondly, the clamping jaws are provided with gripping surfaces, and when the clamping jaws are arranged in the inclined holes in the front end surface of the chuck main body, the gripping surfaces of the clamping jaws are parallel to the central axis of the chuck main body, so that when a plurality of clamping jaws synchronously move along the inclined holes, the corresponding gripping surfaces can synchronously approach or separate, and the steel cable is fastened or loosened.
In the present embodiment, with the direction of fig. 9 as a reference, the jaw body portion is a cylinder-like body, that is, a cylinder is obtained by cutting through other multiple different surfaces: the diameter of the cylinder is the same as that of the inclined hole on the front end surface of the chuck main body; for the front part of the jaw main body, the lower part of a cylinder is obliquely cut by three adjacent planes, wherein the three adjacent planes are sequentially called as a first plane, a second plane and a third plane, the second plane is intersected with the central axis of the cylinder, and the included angle between the second plane and the central axis of the cylinder is alpha and is equal to the included angle between the axis of an inclined hole on the front end surface of the chuck main body and the central axis of the chuck main body; the included angle between the first plane and the third plane is 120 degrees, and the purpose that the three claws do not interfere with each other when the three claws approach each other to clamp the steel cable is mainly met. The front end faces of the jaws are perpendicular to the second plane such that when the jaws are mounted in angled holes in the front end face of the chuck body, the front end faces of the jaws are perpendicular to the chuck body axis.
The rear end faces of the clamping jaws are parallel to the front end faces of the clamping jaws, so that when the clamping jaws are installed in inclined holes in the front end face of the chuck main body, the rear end faces of the clamping jaws are perpendicular to the axis of the chuck main body, the rear end faces of the clamping jaws can be reliably contacted with the adjusting threaded sleeves, the plurality of clamping jaws can be synchronously pushed to move through the adjusting threaded sleeves, and the steel cable to be tested is pre-grasped.
The jaw rear face also has a radial projection for preventing the jaw from slipping out of the chuck body. Due to the existence of the radial boss, the jaw cannot be installed from the outer side to the inner side of the front end face of the chuck main body and can only be installed from the inner side to the outer side of the front end face of the chuck main body, so that if the middle rear part of the jaw main body is a complete cylindrical section, the jaw interference with each other or the jaw and the chuck main body interfere with each other can occur during the installation of the jaw, therefore, along the axial line direction of the jaw main body, the middle rear part of the jaw main body is provided with a fourth plane, a fifth plane and a sixth plane which are correspondingly connected with the first plane, the second plane and the third plane, the fourth plane, the fifth plane and the sixth plane are parallel to the axial line of the jaw main body, the complete cylindrical section of the middle rear part of the jaw main body.
The front part of the adjusting threaded sleeve is in coaxial threaded fit with the rear part of the chuck main body, the rear part of the adjusting threaded sleeve is in coaxial threaded fit with the adjusting nut, after the adjusting nut and the adjusting threaded sleeve are tightly connected, the adjusting nut is continuously rotated to realize axial relative movement of the adjusting threaded sleeve and the chuck main body, and then a plurality of clamping jaws are synchronously pushed to move, so that the tested steel cable is pre-grasped.
And a steel grommet for connecting with the stretching device is fixed on the rear end face of the adjusting nut, so that the steel grommet is not needed to be woven for each steel cable to be measured. The center of the rear end face of the adjusting nut is also provided with a through hole, and the through hole is used for enabling a tested steel cable to pass through a steel cable tensile test chuck when the tested steel cable is too long, so that the tested steel cable is prevented from being accumulated in the chuck, and the head of the tested steel cable is prevented from being twisted and strandling.
When the clamping device is used, the adjusting threaded sleeve is moved backwards, the moving space of the clamping jaws is left, and the three clamping jaws slide backwards; the method comprises the following steps that a tested steel cable extends into a steel cable tensile test chuck from the front part of the steel cable tensile test chuck, and if the tested steel cable is longer, the tested steel cable can extend out from the rear end of the steel cable tensile test chuck; then the adjusting nut is rotated to drive the adjusting threaded sleeve to move forwards, the plurality of clamping jaws are synchronously pushed to move, and the pre-grasping of the tested steel cable is realized by utilizing the grasping surfaces of the clamping jaws; the steel cable ring at the rear end of the steel cable tensile test chuck is connected with the tensile equipment, and when the tensile equipment is adopted to pull the steel cable tensile test chuck, the clamping jaws can continuously move forwards along the inclined holes, so that the steel cable is more and more tightened.
In order to prevent the surface of the detected steel cable from being damaged by clamping, a clamping sleeve is sleeved on the detected steel cable, and the detected steel cable sleeved with the clamping sleeve is clamped when the steel cable is clamped.
Although embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the principles and spirit of the present invention.
Claims (7)
1. A cable wire tensile test dop which characterized in that: comprises a chuck main body, an adjusting threaded sleeve, an adjusting nut and a multi-clack jaw;
the chuck main body is of a hollow cylindrical structure, a plurality of inclined holes which are uniformly distributed relative to the central axis of the chuck main body are formed in the front end face of the chuck main body, the number of the inclined holes is the same as that of the clamping jaws, the inclined direction of each inclined hole is inclined from the inner side of the front end face to the outer side of the front end face, which is gradually close to the central axis of the chuck main body, and each inclined hole is used for being matched with one clamping jaw; the center of the front end surface of the chuck main body is also provided with an axial through hole;
a cavity for the jaw to move is arranged behind the front end face of the chuck main body, and the axial length and the radial size of the cavity meet the space requirement of the jaw in the process of moving back and forth; the rear end face of the chuck main body is provided with an axial threaded through hole which is used for being in threaded fit with the adjusting threaded sleeve;
the main body structure of the clamping jaw is matched with the inclined hole on the front end face of the chuck main body, so that the clamping jaw can move along the inclined hole; the clamping jaws are also provided with gripping surfaces, when the clamping jaws are arranged in the inclined holes in the front end surface of the chuck main body, the gripping surfaces of the clamping jaws are parallel to the central axis of the chuck main body, and when a plurality of clamping jaws synchronously move along the inclined holes, the corresponding gripping surfaces synchronously approach or depart from each other, so that the steel cable is fastened or loosened;
the front part of the adjusting threaded sleeve is coaxially matched with the rear part of the chuck main body in a threaded manner, and the rear part of the adjusting threaded sleeve is coaxially matched with the adjusting nut in a threaded manner; and a steel grommet for connecting with the stretching equipment is fixed on the rear end face of the adjusting nut.
2. The cable pull test chuck as set forth in claim 1, wherein: the number of the claws is three.
3. The cable pull test chuck as set forth in claim 1, wherein: the center of the rear end face of the adjusting nut is also provided with a through hole for enabling the measured steel cable to pass through the steel cable tensile test chuck when the measured steel cable is too long, and the measured steel cable is prevented from being accumulated in the chuck.
4. The cable pull test chuck as set forth in claim 1, wherein: the jack catch is a similar cylinder and is obtained by cutting a cylinder by a plurality of different surfaces: the diameter of the cylinder is the same as that of the inclined hole on the front end surface of the chuck main body; the front part of the jaw is obtained by beveling the lower part of a cylinder by three adjacent planes which are a first plane, a second plane and a third plane in sequence, wherein the second plane is intersected with the central axis of the cylinder, and the included angle between the second plane and the central axis of the cylinder is equal to the included angle between the axis of an inclined hole on the front end surface of the chuck main body and the central axis of the chuck main body; the included angle between the first plane and the third plane is 360 degrees/n, and n is the number of the claws.
5. The cable pull test chuck as set forth in claim 4, wherein: the front end face of the clamping jaw is perpendicular to the second plane, and the rear end face of the clamping jaw is parallel to the front end face of the clamping jaw.
6. The cable pull test chuck as set forth in claim 5, wherein: the rear end face of the clamping jaw is also provided with a radial boss; the middle rear part of the jaw is obtained by cutting a cylinder along the axial direction of the jaw by a fourth plane, a fifth plane and a sixth plane, and the fourth plane, the fifth plane and the sixth plane are correspondingly connected with the first plane, the second plane and the third plane; the fourth, fifth and sixth planes are parallel to the jaw body axis.
7. The cable pull test chuck as set forth in claim 1, wherein: the steel cable to be tested is sleeved with a clamping sleeve, and when the steel cable is clamped, the clamping sleeve is sleeved with the steel cable to be tested of the clamping sleeve part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021199244.4U CN212844668U (en) | 2020-06-24 | 2020-06-24 | Clamping head for tensile test of steel cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021199244.4U CN212844668U (en) | 2020-06-24 | 2020-06-24 | Clamping head for tensile test of steel cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212844668U true CN212844668U (en) | 2021-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021199244.4U Active CN212844668U (en) | 2020-06-24 | 2020-06-24 | Clamping head for tensile test of steel cable |
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| Country | Link |
|---|---|
| CN (1) | CN212844668U (en) |
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2020
- 2020-06-24 CN CN202021199244.4U patent/CN212844668U/en active Active
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