CN214578799U - Piston rod assembly and advancing jack - Google Patents
Piston rod assembly and advancing jack Download PDFInfo
- Publication number
- CN214578799U CN214578799U CN202120535640.8U CN202120535640U CN214578799U CN 214578799 U CN214578799 U CN 214578799U CN 202120535640 U CN202120535640 U CN 202120535640U CN 214578799 U CN214578799 U CN 214578799U
- Authority
- CN
- China
- Prior art keywords
- hole
- magnetic ring
- piston rod
- rod assembly
- mounting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000012360 testing method Methods 0.000 claims abstract description 42
- 238000006073 displacement reaction Methods 0.000 claims description 69
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 24
- 238000009434 installation Methods 0.000 abstract description 23
- 238000003754 machining Methods 0.000 abstract description 9
- 238000013461 design Methods 0.000 abstract description 2
- 238000012545 processing Methods 0.000 description 14
- 238000003825 pressing Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 125000003003 spiro group Chemical group 0.000 description 1
Images
Landscapes
- Actuator (AREA)
Abstract
The utility model provides a piston rod subassembly and advancing jack, the piston rod subassembly includes: the test device comprises a rod body, a test device and a control device, wherein the rod body is provided with an outer end, a stepped hole is formed in the end face of the outer end in the axial direction of the rod body, the stepped hole comprises a test hole and an installation hole communicated with the test hole, the test hole is far away from the end face of the outer end relative to the installation hole, and the aperture of the test hole is smaller than that of the installation hole; and the magnetic ring mounting seat is arranged in the mounting hole, a step surface is formed between the testing hole and the mounting hole, and the magnetic ring mounting seat is abutted against the step surface. The technical scheme of the utility model among, owing to set up the magnetic ring mount pad, utilize the magnetic ring mount pad to install the magnetic ring, compare with the piston rod subassembly among the correlation technique, when installing the magnetic ring of equidimension, the deep hole diameter that is used for installing the measuring staff of sensor in the shoulder hole can design bigger. Therefore, a gun drill process can be replaced by a deep hole boring process, so that the difficulty and cost of deep hole machining are reduced, and the precision of deep hole machining is improved.
Description
Technical Field
The utility model relates to a pass jack equipment technical field particularly, relate to a piston rod subassembly and pass jack.
Background
At present, the deep hole of the rod body of the piston rod assembly of the pushing jack in the related art is mostly processed by gun drill equipment, and the tail end of the rod body needs to be processed with a magnetic ring installation groove and internal threads. When the deep hole with the smaller aperture is machined through the process, the machining difficulty of the rod body is larger and the cost is high, and the conditions of hole eccentricity, chip blockage and the like easily occur, so that the problem of inaccurate reading of the displacement sensor is caused.
SUMMERY OF THE UTILITY MODEL
The present invention aims at least solving one of the technical problems existing in the prior art or the related art.
To this end, an object of the present invention is to provide a piston rod assembly.
Another object of the utility model is to provide a pass jack.
In order to achieve the above object, an embodiment of the present invention provides a piston rod assembly, which includes: the test device comprises a rod body, a test device and a control device, wherein the rod body is provided with an outer end, a stepped hole is formed in the end face of the outer end in the axial direction of the rod body, the stepped hole comprises a test hole and an installation hole communicated with the test hole, the test hole is far away from the end face of the outer end relative to the installation hole, and the aperture of the test hole is smaller than that of the installation hole; and the magnetic ring mounting seat is arranged in the mounting hole, a step surface is formed between the testing hole and the mounting hole, and the magnetic ring mounting seat is abutted against the step surface.
In the technical scheme, as the magnetic ring mounting seat is arranged and used for mounting the magnetic ring, compared with the piston rod assembly in the related art, when the magnetic ring with the same size is mounted, the diameter of a deep hole for mounting a measuring rod of a sensor in the stepped hole can be designed to be larger. Therefore, a gun drill process can be replaced by a deep hole boring process, the difficulty and the cost of deep hole machining are reduced, and the precision of deep hole machining is improved, so that the magnetic ring can be fixed in the magnetic ring mounting seat, the displacement of the piston rod assembly can be accurately detected by the displacement sensor, the displacement of the pushing jack can be conveniently controlled, and the displacement control requirement of the pushing jack can be met.
In addition, the utility model provides a piston rod assembly in above-mentioned embodiment can also have following additional technical characterstic:
in the above technical scheme, the value range of the aperture d of the test hole is as follows: d is more than or equal to 25mm and less than or equal to 40 mm.
In the technical scheme, the value range of the aperture d is as follows: d is more than or equal to 25mm and less than or equal to 40 mm. The deep hole boring process can be adopted to replace a gun drill process to process the test hole, so that the difficulty and the cost of deep hole processing are reduced, the precision of deep hole processing is improved, the magnetic ring can be fixed in the magnetic ring mounting seat, the displacement of the piston rod assembly can be accurately detected by the displacement sensor, the displacement of the pushing jack can be conveniently controlled, and the displacement control requirement of the pushing jack can be met.
In any one of the above technical solutions, an internal thread is provided on a hole wall of the mounting hole, a first external thread is provided on an outer periphery of the magnetic ring mounting seat, and the magnetic ring mounting seat is screwed in the mounting hole.
In this technical scheme, because the spiro union of magnetic ring mount pad is in the mounting hole, the magnetic ring mount pad can the butt fix on the step face like this to ensure that the magnetic ring mount pad can be stably fixed on the body of rod, and then ensure that the magnetic ring can fix in the magnetic ring mount pad, finally ensure that displacement sensor can accurately detect the displacement of piston rod subassembly, the convenient displacement control to advancing the jack, in order to satisfy advancing the displacement control requirement of jack.
In any one of the above technical solutions, the magnetic ring mounting base has a mounting cavity for mounting the magnetic ring and a through hole communicating the mounting cavity and the test hole, and the aperture of the through hole is smaller than that of the test hole.
In this technical scheme, the installation cavity can provide installation space for the magnetic ring to the magnetic ring is conveniently installed, ensures like this that the magnetic ring can correctly install on the magnetic ring mount pad, thereby ensures that displacement sensor can normally work.
In any of the above technical solutions, a first engaging groove is disposed on a wall of the through hole.
In this technical scheme, first draw-in groove cooperatees with revolving to twist the instrument, for example the screwdriver, conveniently revolves to twist the instrument and screw the magnetic ring mount pad to ensure that the magnetic ring mount pad is fixed in the mounting hole, and then ensure that the magnetic ring can fix in the magnetic ring mount pad.
In any one of the above technical solutions, the piston rod assembly further includes a locking ring, and the locking ring is used for limiting the magnetic ring in the mounting cavity.
In the technical scheme, the locking ring can tightly press the magnetic ring in the magnetic ring mounting seat, so that the magnetic ring is fixed, the displacement sensor can accurately detect the displacement of the piston rod assembly, the displacement control of the pushing jack is facilitated, and the displacement control requirement of the pushing jack is met.
In any one of the above technical solutions, the outer circumference of the locking ring is provided with a second external thread, and the locking ring is screwed in the mounting hole.
In the technical scheme, the locking ring is screwed in the mounting hole. The locking ring can compress the magnetic ring in the mounting cavity of the magnetic ring mounting seat, and then the magnetic ring can be fixedly fixed in the magnetic ring mounting seat, so that the displacement sensor can accurately detect the displacement of the piston rod assembly, the displacement of the pushing jack can be conveniently controlled, and the displacement control requirement of the pushing jack can be met.
In any one of the above technical solutions, the depth of the installation cavity is greater than the thickness of the magnetic ring, the locking ring includes a pressing end for pressing the magnetic ring, and the outer diameter of the pressing end is smaller than the inner diameter of the installation cavity.
In the technical scheme, the compressing end can compress the magnetic ring in the magnetic ring mounting seat, so that the fixation of the magnetic ring is realized, the displacement sensor can accurately detect the displacement of the piston rod assembly, the displacement control of the pushing jack is facilitated, and the displacement control requirement of the pushing jack is met.
In any one of the above technical solutions, the inner wall of the locking ring is provided with a second locking groove.
In this technical scheme, the second draw-in groove cooperatees with revolving to twist the instrument, for example the screwdriver, conveniently revolves to twist the instrument and screw the locking ring to ensure that the locking ring can compress tightly the magnetic ring and fix in the magnetic ring mount pad, and then ensure to move the sensor and can normally work.
The utility model discloses technical scheme of second aspect provides a advancing jack, and advancing jack includes: a cylinder body; according to the piston rod assembly in any one of the technical solutions of the first aspect, the piston rod assembly is telescopically arranged in the cylinder; and the displacement sensor is arranged on the piston rod assembly.
The utility model discloses the lapse jack that technical scheme of second aspect provided, because of including the piston rod subassembly of any one in the first aspect technical scheme, therefore have all beneficial effects that any one of above-mentioned technical scheme had, no longer describe here.
In the above scheme, because the magnetic ring mounting seat is integrated with the pushing jack, the processing and manufacturing difficulty of the pushing jack is reduced, and the processing and manufacturing cost is saved. Compare with the lapse jack among the correlation technique, the displacement of lapse jack in this application has better regulation and control precision, and then can satisfy higher control accuracy requirement.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, 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 is a schematic view showing a structure of a piston rod assembly in the related art;
fig. 2 shows a schematic structural view of a piston rod assembly according to an embodiment of the present invention;
FIG. 3 shows a front view of the magnetic ring mount of FIG. 2;
figure 4 shows a front view of the locking ring of figure 2.
Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 4 is:
10', a piston rod assembly; 12', a rod body; 10. a piston rod assembly; 12. a rod body; 122. an outer end; 124. a stepped hole; 1242. a test well; 1244. mounting holes; 14. a magnetic ring mounting seat; 142. a through hole; 144. a first card slot; 16. locking a ring; 162. a compression end; 164. a through hole; 166. a second card slot; 20. a magnetic ring.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
It should be noted that the displacement sensor includes a measuring rod and a magnetic ring 20, and the displacement sensor detects the specific displacement value of the rod body 12' by detecting the relative position of the measuring rod and the magnetic ring 20. As shown in fig. 1, in the related art, the piston rod assembly 10 ' includes a rod body 12 ', a magnetic ring installation groove is formed in the rod body 12 ' to install a magnetic ring 20, and the measuring rod is inserted into a test hole communicated with the magnetic ring installation groove.
A piston rod assembly 10 according to some embodiments of the present invention is described below with reference to fig. 2-4.
As shown in fig. 2, an embodiment of the present invention provides a piston rod assembly 10, where the piston rod assembly 10 includes a rod body 12 and a magnetic ring mounting seat 14. Wherein, the body of rod 12 has outer end 122, is provided with the shoulder hole 124 along the axial setting of the body of rod 12 on the terminal surface of outer end 122, and shoulder hole 124 includes test hole 1242 and the mounting hole 1244 that is linked together with test hole 1242, and test hole 1242 is farther away from the terminal surface of outer end 122 for mounting hole 1244, and the aperture of test hole 1242 is less than the aperture of mounting hole 1244. The magnetic ring mounting seat 14 is arranged in the mounting hole 1244, a step surface is formed between the testing hole 1242 and the mounting hole 1244, and the magnetic ring mounting seat 14 abuts against the step surface.
In the above arrangement, since the magnetic ring mounting seat 14 is provided and the magnetic ring 20 is mounted by using the magnetic ring mounting seat 14, the diameter of the deep hole of the measuring rod for mounting the sensor in the stepped hole 124 can be designed to be larger when the magnetic ring 20 of the same size is mounted, compared with the piston rod assembly 10 in the related art. Therefore, a gun drill process can be replaced by a deep hole boring process, the difficulty and the cost of deep hole machining are reduced, the precision of deep hole machining is improved, the magnetic ring 20 can be fixed in the magnetic ring mounting seat 14, the displacement of the piston rod assembly 10 can be accurately detected by the displacement sensor, the displacement of the pushing jack can be conveniently controlled, and the displacement control requirement of the pushing jack can be met.
It should be noted that the through hole 142 of the magnetic ring mounting seat 14, the through hole 164 of the locking ring 16, and the inner hole of the magnetic ring 20 in the present application all have an avoiding function for passing out the displacement sensor terminal.
It should be noted that, when the aperture of the processed deep hole is large, a deep hole boring process can be adopted, and a gun drill process is not required, and compared with the gun drill process, the deep hole boring process has the advantages of small processing difficulty and low processing cost.
Specifically, in the embodiment of the present invention, the value range of the aperture d of the test hole 1242 is: d is more than or equal to 25mm and less than or equal to 40 mm.
In the above setting, the value range of the aperture d is as follows: d is more than or equal to 25mm and less than or equal to 40 mm. Therefore, a deep hole boring process can be adopted to replace a gun drill process to process the test holes, so that the difficulty and cost of deep hole processing are reduced, and the precision of deep hole processing is improved, so that the magnetic ring 20 can be fixed in the magnetic ring mounting seat 14, the displacement of the piston rod assembly 10 can be accurately detected by the displacement sensor, the displacement of the pushing jack can be conveniently controlled, and the displacement control requirement of the pushing jack can be met.
Specifically, as shown in fig. 2, in the embodiment of the present invention, an internal thread is disposed on the hole wall of the mounting hole 1244, a first external thread is disposed on the outer periphery of the magnetic ring mounting seat 14, and the magnetic ring mounting seat 14 is screwed into the mounting hole 1244.
In the above arrangement, since the magnetic ring mounting seat 14 is screwed in the mounting hole 1244, the magnetic ring mounting seat 14 can be abutted and fixed on the step surface through the screw thread fit, so as to ensure that the magnetic ring mounting seat 14 can be stably fixed on the rod body 12, further ensure that the magnetic ring 20 can be fixed in the magnetic ring mounting seat 14, finally ensure that the displacement sensor can accurately detect the displacement of the piston rod assembly 10, facilitate the displacement control of the pushing jack, and meet the displacement control requirement of the pushing jack.
Specifically, as shown in fig. 2, in the embodiment of the present invention, the magnetic ring mounting seat 14 has a mounting cavity for mounting the magnetic ring 20 and a through hole 142 communicating the mounting cavity with the test hole 1242, and an aperture of the through hole 142 is smaller than an aperture of the test hole 1242.
In the above arrangement, the installation cavity can provide an installation space for the magnetic ring 20 to facilitate installation of the magnetic ring 20, so as to ensure that the magnetic ring 20 can be correctly installed on the magnetic ring installation seat 14, thereby ensuring that the displacement sensor can normally work.
Specifically, as shown in fig. 3, in an embodiment of the present invention, a first engaging groove 144 is disposed on a hole wall of the through hole 142.
In the above arrangement, first engaging groove 144 cooperates with a screwing tool, such as a screwdriver, to facilitate the screwing tool to screw magnetic ring mounting seat 14, so as to ensure that magnetic ring mounting seat 14 is fixed in mounting hole 1244, and thus ensure that magnetic ring 20 can be fixed in magnetic ring mounting seat 14.
Specifically, as shown in fig. 2, in an embodiment of the present invention, the piston rod assembly 10 further includes a locking ring 16, and the locking ring 16 is used for limiting the magnetic ring 20 in the mounting cavity.
In the above arrangement, the locking ring 16 can press the magnetic ring 20 in the magnetic ring mounting seat 14, so as to fix the magnetic ring 20, thereby ensuring that the displacement sensor can accurately detect the displacement of the piston rod assembly 10, facilitating the displacement control of the pushing jack, and meeting the displacement control requirement of the pushing jack.
Specifically, as shown in fig. 2, in the embodiment of the present invention, the magnetic ring mounting seat 14 has a mounting cavity for mounting the magnetic ring 20 and a through hole 142 communicating the mounting cavity and the test hole 1242, and an aperture of the through hole 142 is smaller than an aperture of the test hole 1242.
In the above arrangement, the installation cavity can provide an installation space for the magnetic ring 20 to facilitate installation of the magnetic ring 20, so as to ensure that the magnetic ring 20 can be correctly installed on the magnetic ring installation seat 14, thereby ensuring that the displacement sensor can normally work.
Specifically, as shown in fig. 2, in an embodiment of the present invention, a second external thread is provided on the outer circumference of the locking ring 16, and the locking ring 16 is screwed in the mounting hole 1244.
In the above arrangement, the locking ring 16 is threaded into the mounting hole 1244. Therefore, the locking ring 16 can tightly press the magnetic ring 20 in the mounting cavity of the magnetic ring mounting seat 14, and further ensure that the magnetic ring 20 can be fixedly fixed in the magnetic ring mounting seat 14, so that the displacement sensor can accurately detect the displacement of the piston rod assembly 10, the displacement control of the pushing jack is facilitated, and the displacement control requirement of the pushing jack is met.
Specifically, as shown in fig. 4, in the embodiment of the present invention, the depth of the installation cavity is greater than the thickness of the magnetic ring 20, the locking ring 16 includes a pressing end 162 for pressing the magnetic ring 20, and the outer diameter of the pressing end 162 is smaller than the inner diameter of the installation cavity.
In the above arrangement, the locking ring can press the magnetic ring 20 tightly in the magnetic ring mounting seat 14, so as to fix the magnetic ring 20, thereby ensuring that the displacement sensor can accurately detect the displacement of the piston rod assembly 10, facilitating the displacement control of the pushing jack, and meeting the displacement control requirement of the pushing jack.
Specifically, as shown in fig. 4, in an embodiment of the present invention, a second locking groove 166 is disposed on an inner wall of the locking ring 16.
In the above arrangement, the second engaging groove 166 cooperates with a screwing tool, such as a screwdriver, to facilitate the screwing tool to screw the locking ring 16, so as to ensure that the locking ring 16 can tightly fix the magnetic ring in the magnetic ring mounting seat 14, and thus ensure that the motion sensor can work normally.
The utility model also provides a lapse jack, including the cylinder body, as in any one of the first aspect embodiment piston rod assembly 10 and displacement sensor. Wherein, piston rod assembly 10 telescopically sets up in the cylinder body, and displacement sensor sets up in piston rod assembly 10.
The utility model discloses the advancing jack that technical scheme of second aspect provided, because of including the piston rod assembly 10 of any one in the first aspect embodiment, therefore have all beneficial effects that any above-mentioned embodiment had, no longer describe herein.
In the arrangement, the magnetic ring mounting seat 14 is integrated with the pushing jack, so that the processing and manufacturing difficulty of the pushing jack is reduced, and the processing and manufacturing cost of the pushing jack is saved. Compare with the lapse jack among the correlation technique, the displacement of lapse jack in this application has better regulation and control precision, and then can satisfy higher control accuracy requirement.
It should be noted that the diameter of the deep hole testing hole 1242 in this application is much larger than the diameter of the measuring rod of the displacement sensor, and the deep hole boring processing mode can be used for processing, and an internal thread is processed on the tail end of the rod body 12, that is, the hole wall of the mounting hole 1244. The magnetic ring mounting seat 14 is designed, external threads are machined on the magnetic ring mounting seat 14, a mounting cavity is formed for placing the magnetic ring 20, and the depth of the mounting cavity is slightly smaller than the thickness of the magnetic ring 20. The axial design of magnetic ring mount pad 14 has perforating hole 142, and the diameter of aperture is greater than the diameter 3mm to 5mm of displacement sensor's survey pole. The inner wall of the through hole 142 is provided with a first engaging groove 144 for screwing the thread between the magnetic ring mounting seat 14 and the rod body 12. The locking ring 16 adopts a locking nut, the locking nut is provided with an external thread, the locking nut is axially provided with a through hole 164, and the aperture is larger than the diameter of a measuring rod of the displacement sensor by 3mm to 5 mm. A second locking groove 166 is formed on the inner wall of the through hole 164 for tightening the screw thread between the lock nut and the rod body 12. The external thread of the magnetic ring mounting seat 14 and the external thread of the lock nut are matched with the internal thread of the rod body 12 respectively, the magnetic ring 20 is tightly attached to the magnetic ring mounting seat 14, and the lock nut is tightly attached to the magnetic ring 20 and forms a double-thread anti-loosening structure with the magnetic ring mounting seat 14.
The piston rod assembly 10 and the pushing jack in the present application have the following advantages:
1. after the diameter of the deep hole is increased, compared with a gun drill process, the deep hole boring process has lower processing difficulty, and the processing cost can be saved by about 60%.
2. The magnetic ring mounting seat 14 is provided with a mounting cavity for placing the magnetic ring 20, the depth of the mounting cavity is slightly smaller than the thickness of the magnetic ring 20, and after the lock nut is screwed down, the magnetic ring mounting seat 14, the magnetic ring 20 and the lock nut can be tightly attached together and cannot axially move relative to the rod body 12.
3. The magnetic ring mounting seat 14 and the locking nut form a double-thread connection anti-loose structure.
From the above description, it can be seen that, due to the provision of the magnetic ring mounting seat 14, the diameter of the deep hole for mounting the sensor measuring rod in the stepped hole 124 can be designed to be larger when the same size of the magnetic ring 20 is mounted, compared to the piston rod assembly 10 in the related art, by using the magnetic ring mounting seat 14 to mount the magnetic ring 20. Therefore, a gun drill process can be replaced by a deep hole boring process, the difficulty and the cost of deep hole machining are reduced, the precision of deep hole machining is improved, the magnetic ring 20 can be fixed in the magnetic ring mounting seat 14, the displacement of the piston rod assembly 10 can be accurately detected by the displacement sensor, the displacement of the pushing jack can be conveniently controlled, and the displacement control requirement of the pushing jack can be met.
In the present application, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", 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 simplification of description, but do not indicate or imply that the device or unit indicated must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.
In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A piston rod assembly (10), wherein the piston rod assembly (10) comprises:
the test rod comprises a rod body (12) and a test rod body, wherein the rod body (12) is provided with an outer end (122), a stepped hole (124) which is arranged along the axial direction of the rod body (12) is formed in the end face of the outer end (122), the stepped hole (124) comprises a test hole (1242) and a mounting hole (1244) which is communicated with the test hole (1242), the test hole (1242) is far away from the end face of the outer end (122) relative to the mounting hole (1244), and the aperture of the test hole (1242) is smaller than that of the mounting hole (1244);
the magnetic ring mounting seat (14) is arranged in the mounting hole (1244), a step surface is formed between the testing hole (1242) and the mounting hole (1244), and the magnetic ring mounting seat (14) is abutted against the step surface.
2. The piston rod assembly (10) of claim 1 wherein the aperture d of the test bore (1242) ranges: d is more than or equal to 25mm and less than or equal to 40 mm.
3. The piston rod assembly (10) of claim 1, wherein the bore wall of the mounting bore (1244) is provided with an internal thread, the magnetic ring mount (14) is provided with a first external thread on an outer circumference thereof, and the magnetic ring mount (14) is threadedly engaged within the mounting bore (1244).
4. The piston rod assembly (10) according to claim 1, wherein the magnetic ring mounting seat (14) has a mounting cavity for mounting the magnetic ring (20) and a through hole (142) communicating the mounting cavity with the test hole (1242), and the aperture of the through hole (142) is smaller than that of the test hole (1242).
5. The piston rod assembly (10) of claim 4, wherein a wall of said through bore (142) is provided with a first detent (144).
6. The piston rod assembly (10) of claim 4, wherein said piston rod assembly (10) further comprises a locking ring (16), said locking ring (16) for retaining said magnetic ring (20) within said mounting cavity.
7. A piston rod assembly (10) according to claim 6, wherein a second external thread is provided on the outer circumference of the locking ring (16), the locking ring (16) being threadedly engaged in the mounting bore (1244).
8. The piston rod assembly (10) of claim 6 wherein the depth of the mounting cavity is greater than the thickness of the magnet ring (20), the locking ring (16) including a compression end (162) for compressing the magnet ring (20), the compression end (162) having an outer diameter less than an inner diameter of the mounting cavity.
9. The piston rod assembly (10) of claim 6 wherein said locking ring (16) is provided with a second detent (166) on an inner wall thereof.
10. A advancing jack, comprising:
a cylinder body;
a piston rod assembly (10) according to any one of claims 1 to 9, said piston rod assembly (10) being telescopically disposed within said cylinder;
and a displacement sensor arranged on the piston rod assembly (10) and the cylinder body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120535640.8U CN214578799U (en) | 2021-03-15 | 2021-03-15 | Piston rod assembly and advancing jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120535640.8U CN214578799U (en) | 2021-03-15 | 2021-03-15 | Piston rod assembly and advancing jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214578799U true CN214578799U (en) | 2021-11-02 |
Family
ID=78319799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120535640.8U Expired - Fee Related CN214578799U (en) | 2021-03-15 | 2021-03-15 | Piston rod assembly and advancing jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214578799U (en) |
-
2021
- 2021-03-15 CN CN202120535640.8U patent/CN214578799U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN200968847Y (en) | Universal inner hole ring groove depth measuring meter | |
| CN214578799U (en) | Piston rod assembly and advancing jack | |
| CN112855928A (en) | Piston rod assembly and advancing jack | |
| CN212512868U (en) | Wedge-shaped anti-loosening threaded fastener measuring gauge | |
| CN108168491B (en) | A installation device for measuring turbine apex clearance sensor | |
| CN113916103A (en) | Device and method for precisely measuring depth of thin-wall truncated cone long hole | |
| CN115615276B (en) | Caliper with adjustable width and dimension and measuring method | |
| CN109630826B (en) | Sensor support frame capable of adjusting position | |
| CN207508713U (en) | A kind of clamping tool for being used to process thin-wall sleeve | |
| CN115060148B (en) | Coaxiality gauge for cylinder cover | |
| CN214620978U (en) | Gauge for measuring diameter of inner groove | |
| CN212763307U (en) | Assembling tool for assembling stud | |
| CN216044809U (en) | Positioning connecting device | |
| CN208671947U (en) | A kind of cylinder cap fuel injector hole depth measuring tool | |
| CN211009471U (en) | Assembled eccentric positioning pin assembly | |
| CN206740058U (en) | Disc brake carrier pilot hole and mounting surface arrangement for measuring verticality | |
| CN113634795A (en) | Shaft part angular positioning device and positioning method based on shaft end square groove | |
| CN110056562B (en) | Variable-pitch threaded spring locking threaded structure and application method thereof | |
| CN208952851U (en) | A kind of odd number gear spline excircle dimension measurement cubing | |
| CN108709482B (en) | Vertical measuring tool for distance between vertical hole system of automobile part space | |
| CN202229744U (en) | Engine cylinder body or cylinder cover screwed hole displacement detection pin | |
| CN214533956U (en) | Self-tapping embedded nut with high installation precision | |
| CN220103937U (en) | Firing pin protrusion measuring device | |
| CN219956330U (en) | Shaft part clamping groove detection special device | |
| CN213775672U (en) | Main pump phase measuring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211102 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |