CN214096447U - Ten thousand tons of force measuring machines and lower pull head structure thereof - Google Patents
Ten thousand tons of force measuring machines and lower pull head structure thereof Download PDFInfo
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- CN214096447U CN214096447U CN202120178414.9U CN202120178414U CN214096447U CN 214096447 U CN214096447 U CN 214096447U CN 202120178414 U CN202120178414 U CN 202120178414U CN 214096447 U CN214096447 U CN 214096447U
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Abstract
The utility model provides a ten thousand tons of force measuring machines and lower draw head structure thereof, lower pull head are installed on the base of ten thousand tons of force measuring machines, and lower pull head includes pull head nut and lower pull head mobile jib down, pull head nut is in through threaded connection down the lower extreme of pull head mobile jib, open at the base center has the mounting hole, the mounting hole includes first aperture portion and second aperture portion the intermediate position of second aperture portion is equipped with the keyway of indent, still includes retaining ring, ring key and compresses tightly the cover, the retaining ring is installed in the second aperture portion of keyway below, the ring key is installed in the keyway, compress tightly the cover and install in the second aperture portion of keyway top, compress tightly cover upper portion have the flange face and pay through the screw lock on the base. Adopt the utility model discloses technical scheme can conveniently carry out the installation of pull head down from the base top, and the ring key can form the confining force reliably to pull head down, ensures that pull head reliably bears ten thousand tons of big power values's pull force that makes progress down.
Description
Technical Field
The utility model relates to a dynamometer/force standard machine technical field specifically is a ten thousand tons dynamometers and lower pull head structure thereof.
Background
A force measuring machine/force standard machine is a device for measuring/calibrating a force value of an object to be tested. With the development of industry and capital construction, particularly, sensors which are required to be applied to large force values on bridges can reach ten thousand tonnage level. The lower puller of the existing small-tonnage force measuring machine/force standard machine is directly locked on a base by bolts. However, the lower pull head of the ten-thousand-ton force measuring machine/force standard machine is required to be subjected to ten-thousand-ton testing pull force to the maximum extent, and the existing lower pull head mounting structure cannot be applied. Therefore, a pull-down plug structure capable of reliably bearing ten thousand tonnage of test pull force is needed.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to provide a ten thousand ton force measuring machine and lower pull head structure thereof.
In order to achieve the above object, the technical solution of the present invention is: the utility model provides a lower draw head structure of ten thousand tons of force meters, lower draw head install on the base of ten thousand tons of force meters, and lower draw head includes pull head nut and lower pull head mobile jib down, pull head nut is through threaded connection lower pull head mobile jib's lower extreme, open at the base center has the mounting hole, the mounting hole includes first aperture portion and second aperture portion, first aperture portion is located the lower part of second aperture portion, the aperture of first aperture portion is less than the aperture of second aperture portion the intermediate position of second aperture portion is equipped with the keyway of indent, still includes retaining ring, ring key and compresses tightly the cover, the retaining ring is installed in the second aperture portion of keyway below, the ring key is installed in the keyway, compress tightly the cover and install in the second aperture portion of keyway top, compress tightly cover upper portion have the flange face and through the screw lock pay on the base.
Adopt the utility model discloses technical scheme can conveniently carry out the installation of pull head down from the base top, and the ring key can form the confining force reliably to pull head down, ensures that pull head reliably bears ten thousand tons of big power values's pull force that makes progress down.
Furthermore, the lower end of the pressing sleeve is provided with an expansion part extending to the inner ring of the ring key, and the outer diameter of the expansion part is matched with the inner aperture of the ring key.
By adopting the preferable scheme, the position of the ring key can be better regulated, the limiting reliability of the lower puller is improved, and the safety is ensured.
Furthermore, a movable gap is formed between the outer cylindrical surface of the lower pull head main rod and the inner hole wall of the check ring and between the outer cylindrical surface of the lower pull head main rod and the inner hole wall of the compression sleeve, the upper surface of the lower pull head nut is a convex spherical surface, the middle position of the lower surface of the check ring is provided with a concave spherical surface, and the convex spherical surface of the lower pull head nut is matched with the concave spherical surface of the check ring.
By adopting the preferable scheme, the force application direction is enabled to be along the axial direction of the to-be-tested pull type sensor through spherical surface matching, and the testing accuracy is improved.
Further, an external thread is arranged on the outer cylindrical surface of the upper part of the lower pull head.
Furthermore, an outer cylindrical surface of the upper part of the lower pulling head is provided with a radial inner threaded hole.
By adopting the preferable scheme, the lower pull head is connected with the lower end of the sensor to be pulled through the thread connecting sleeve, and the external thread can be matched with the internal thread of the thread connecting sleeve, so that the connection reliability is improved; the radial internal thread hole can fix the half sleeve of the thread connecting sleeve on the lower pulling head in advance, and the installation convenience of the thread connecting sleeve is improved.
Further, a plane bearing is installed on the top end face of the pressing sleeve.
By adopting the preferable scheme, when the tested pull type sensor is installed, the threaded connecting sleeve is divided into two halves for facilitating the installation of the threaded connecting sleeve, one threaded connecting sleeve half sleeve is locked on the lower pull head in advance, the bottom surface of the connecting sleeve half sleeve is contacted with the plane bearing, and the direction of the threaded connecting sleeve half sleeve can be adjusted by rotating the lower pull head so as to be conveniently assembled with the other threaded connecting sleeve half sleeve pre-installed on the tested pull type sensor.
Furthermore, the bottom surface of the base is provided with a baffle plate arranged at the lower opening part of the mounting hole.
By adopting the preferable scheme, the drop-down head can be prevented from falling too much.
The utility model provides a ten thousand tons of force measuring machines, includes frame, application of force unit, standard sensor unit and reaction frame, and the frame includes upper base body, base and connects the stand between upper base body and base, and the reaction frame includes the briquetting, removes the seat and connects at the last briquetting and remove the connecting screw between the seat, and the decurrent pull head that goes up on removing the seat is equipped with above-mentioned lower pull head structure on the base.
By adopting the technical scheme, the lower pull head is ensured to reliably bear the upward pulling force of a ten-thousand-ton large force value, and the force value testing accuracy is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a lower pull head structure of the present invention;
FIG. 2 is a schematic diagram of the installation mode of the half sleeve of the spiral connecting sleeve;
fig. 3 is a schematic structural diagram of a ten-thousand-ton force measuring machine.
Names of corresponding parts represented by numerals and letters in the drawings:
10-standard sensor unit; 20-a force application unit; 30-reaction frame; 301-pressing block; 302-a mobile seat; 40-a frame; 401-upper base body; 402-a base; 4021-a first bore; 4022-a second bore; 4023-a keyway; 50-a sensor to be pulled; 71-upper pull head; 81-lower slider; 811-external thread; 812-lower slider nut; 8121-convex spherical surface; 813-lower pull head main rod; 814-an internally threaded bore; 821-spiral connecting sleeve half sleeve; 822-half spiral connecting sleeve; 83-a retainer ring; an 84-ring bond; 85-a pressing sleeve; 851-expansion parts; 86-planar bearings; 87-baffle.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1, an embodiment of the present invention is: the lower pull head 81 comprises a lower pull head nut 812 and a lower pull head main rod 813, the lower pull head nut 812 is connected to the lower end of the lower pull head main rod 813 through threads, a mounting hole is formed in the center of a base 402 of a rack and comprises a first aperture portion 4021 and a second aperture portion 4022, the first aperture portion 4021 is located at the lower portion of the second aperture portion 4022, the aperture of the first aperture portion 4021 is smaller than that of the second aperture portion 4022, an inwards concave key groove 4023 is formed in the middle of the second aperture portion 4022, the lower pull head structure further comprises a retaining ring 83, a ring key 84 and a pressing sleeve 85, the retaining ring 83 is installed in the second aperture portion 4022 below the key groove, the ring key 84 is installed in the key groove 4023, the pressing sleeve 85 is installed in the second aperture portion 4022 above the key groove, and the upper portion of the pressing sleeve 85 is provided with a flange surface and locked on the base 402 through screws. The beneficial effect of adopting above-mentioned technical scheme is: the installation of the lower puller is more convenient from the upper part of the base, and the pull-up force with a large force value of ten thousand tons is borne.
As shown in fig. 1, in other embodiments of the present invention, the lower end of the pressing sleeve 85 has an expanding portion 851 extending to the inner ring of the ring key, and the outer diameter of the expanding portion 851 is matched with the inner diameter of the ring key 84. The beneficial effect of adopting above-mentioned technical scheme is: the position of the ring key can be better regulated, the limiting reliability of the lower puller is improved, and the safety is ensured.
As shown in fig. 1, in other embodiments of the present invention, a clearance is provided between the outer cylindrical surface of the lower slider main rod 813 and the inner hole wall of the retainer ring 83 and between the inner hole wall of the pressing sleeve 85, the upper surface of the lower slider nut 812 is a convex spherical surface 8121, the middle position of the lower surface of the retainer ring 84 is a concave spherical surface, and the convex spherical surface 8121 of the lower slider nut matches with the concave spherical surface of the retainer ring 84. The beneficial effect of adopting above-mentioned technical scheme is: through spherical surface matching, the force application direction is along the axial direction of the tested pull type sensor, and the test accuracy is improved.
As shown in fig. 1, in other embodiments of the present invention, the outer cylindrical surface of the upper portion of the lower pulling head 81 is provided with an external thread 811, and the outer cylindrical surface of the upper portion of the lower pulling head is provided with an internal thread hole 814 along the radial direction. The beneficial effect of adopting above-mentioned technical scheme is: the lower pull head is connected with the lower end of the sensor to be pulled through a threaded connecting sleeve, and the external thread can be matched with the internal thread of the threaded connecting sleeve, so that the connection reliability is improved; the radial internal thread hole can fix the thread connecting sleeve half sleeve on the lower pulling head in advance, and the installation convenience of the thread connecting sleeve is improved.
As shown in fig. 1, in other embodiments of the present invention, a flat bearing 86 is mounted on the top end surface of the pressing sleeve 85. As shown in fig. 2, when the sensor to be tested is mounted, the screw connection sleeve is divided into two halves to facilitate the mounting of the screw connection sleeve, one screw connection sleeve half 821 is locked on the lower pull head 81 in advance, the bottom surface of the connection sleeve half is contacted with the plane bearing 86, and the direction of the screw connection sleeve half 821 can be adjusted by rotating the lower pull head, so as to facilitate the assembly with the other screw connection sleeve half 822 preinstalled on the sensor to be tested 50.
As shown in fig. 1, in other embodiments of the present invention, a baffle 87 is disposed on the bottom surface of the base 402 and is installed at the lower opening of the mounting hole, so as to prevent the lower head from falling too much.
As shown in fig. 3, a ten-thousand-ton force measuring machine comprises a rack 40, a force application unit 20, a standard sensor unit 10 and a reaction frame 30, wherein the rack 40 comprises an upper base body 401, a base 402 and a stand column connected between the upper base body 401 and the base 402, the reaction frame 30 comprises an upper pressing block 301, a movable base 302 and a connecting screw rod connected between the upper pressing block 301 and the movable base 302, a downward upper pulling head 71 is arranged on the movable base 302, and the lower pulling head structure is arranged on the base 402, so that the lower pulling head can reliably bear the upward pulling force of ten-thousand-ton large force values, and the force value testing accuracy is improved.
The above embodiments are only for illustrating the technical conception and the features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and the protection scope of the present invention can not be limited thereby, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.
Claims (8)
1. A lower pull head structure of a ten-thousand-ton force measuring machine, a lower pull head is arranged on a base of the ten-thousand-ton force measuring machine, it is characterized in that the lower puller comprises a lower puller nut and a lower puller main rod, the lower puller nut is connected with the lower end of the lower puller main rod through threads, the center of the base is provided with a mounting hole, the mounting hole comprises a first hole diameter part and a second hole diameter part, the first hole diameter part is positioned at the lower part of the second hole diameter part, the hole diameter of the first hole diameter part is smaller than that of the second hole diameter part, the middle position of the second hole diameter part is provided with an inwards concave key groove, and the second hole diameter part also comprises a retainer ring, a ring key and a pressing sleeve, the retainer ring is arranged in the second hole diameter part below the key groove, the ring key is arranged in the key groove, the pressing sleeve is arranged in the second hole diameter portion above the key groove, and the upper portion of the pressing sleeve is provided with a flange face and is locked on the base through screws.
2. A pull-down head structure of a ten-thousand ton force measuring machine according to claim 1, characterized in that the lower end of the pressing sleeve is provided with an expansion part extending to the inner ring of the ring key, and the outer diameter of the expansion part is matched with the inner bore diameter of the ring key.
3. A lower puller structure of a ten-thousand-ton force measuring machine according to claim 1, wherein a movable gap is provided between the outer cylindrical surface of the lower puller main rod and the inner hole wall of the retainer ring and between the outer cylindrical surface of the lower puller main rod and the inner hole wall of the pressing sleeve, the upper surface of the lower puller nut is a convex spherical surface, the middle position of the lower surface of the retainer ring is provided with a concave spherical surface, and the convex spherical surface of the lower puller nut is matched with the concave spherical surface of the retainer ring.
4. A lower puller structure of a ten-thousand-ton force measuring machine according to claim 1, characterized in that the upper outer cylindrical surface of the lower puller is provided with external threads.
5. A lower pull head structure of a ten-thousand-ton force measuring machine according to claim 4, characterized in that the upper outer cylindrical surface of the lower pull head is provided with an internal threaded hole along the radial direction.
6. A pull-down head structure of a ten-thousand ton force measuring machine according to claim 5, characterized in that a plane bearing is installed on the top end face of the pressing sleeve.
7. A pull-down head structure of a ten-thousand-ton force measuring machine according to claim 6, characterized in that the bottom surface of the base is provided with a baffle plate installed at the lower opening part of the installation hole.
8. A ten thousand ton force measuring machine, characterized by, including the stander, force application unit, standard sensor unit and reaction frame, the stander includes the upper base body, base and column connected between upper base body and base, the reaction frame includes the upper briquetting, removes the seat and connects the connecting screw rod between upper briquetting and removing the seat, there is downward upper puller on removing the seat, there is lower puller structure of the ten thousand ton force measuring machine as claimed in any one of claims 1-7 on the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120178414.9U CN214096447U (en) | 2021-01-22 | 2021-01-22 | Ten thousand tons of force measuring machines and lower pull head structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120178414.9U CN214096447U (en) | 2021-01-22 | 2021-01-22 | Ten thousand tons of force measuring machines and lower pull head structure thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214096447U true CN214096447U (en) | 2021-08-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120178414.9U Active CN214096447U (en) | 2021-01-22 | 2021-01-22 | Ten thousand tons of force measuring machines and lower pull head structure thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214096447U (en) |
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2021
- 2021-01-22 CN CN202120178414.9U patent/CN214096447U/en active Active
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