CN213632529U - Portable vertical bolt spanner torque calibrator - Google Patents
Portable vertical bolt spanner torque calibrator Download PDFInfo
- Publication number
- CN213632529U CN213632529U CN202022498110.9U CN202022498110U CN213632529U CN 213632529 U CN213632529 U CN 213632529U CN 202022498110 U CN202022498110 U CN 202022498110U CN 213632529 U CN213632529 U CN 213632529U
- Authority
- CN
- China
- Prior art keywords
- torque
- positioning plate
- bolt
- positioning
- fixed
- 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.)
- Active
Links
Images
Landscapes
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The utility model discloses a portable standing bolt spanner torque calibrator links to each other torque sensor and torque measurement appearance through the signal line with torque sensor and rail relatively fixed back through fixed subassembly. Compared with the prior art, the calibrator has the advantages of light design, convenience in carrying, rapidness and firmness in installation and wide application occasions, and not only can be used for calibrating the torque precision of the wrench in each workshop of a railway engineering department, but also can be used for online detection of the wrench operation site.
Description
Technical Field
The utility model relates to a bolt spanner moment of torsion examination technical field especially relates to a portable upright bolt spanner moment of torsion examination ware.
Background
In order to improve the quality of railway line equipment and ensure the driving safety, various bolt-erecting motorized wrenches and manual wrenches newly purchased by a general railway company work department must have a torque display or control function at present, and the torque value of the bolt is prompted in time during operation; the spanner without torque display or control function is used, and a torque measuring tool is required to be used for checking after operation, so that the torque of the bolt is ensured to reach the standard.
In order to implement the installation requirements and torque standards of the bolts of the line fasteners, such as ' repair planning of the general-speed railway line ', ' maintenance planning of the ballastless track line of the high-speed railway and the like, the torque accuracy of various bolt wrenches must be periodically verified, but the existing technical conditions can only be centralized verification of a whole work section or verification of a local metering department, so that the method is complex and has low working efficiency.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a portable standing bolt spanner moment of torsion calibrator for solve the technical problem that above-mentioned prior art exists, can be anytime and anywhere to each workshop, each point implement the examination.
In order to achieve the above object, the utility model provides a following scheme:
the utility model discloses a portable standing bolt spanner torque calibrator, include:
the fixing assembly comprises a locking assembly and two fixing supports, the two fixing supports are attached to the steel rail from two transverse sides respectively, and the two fixing supports are connected through the locking assembly and clamp the steel rail;
the two torque sensors are provided with an upper flange and a lower flange, and the lower flanges of the two torque sensors are fixedly connected with one fixed support respectively;
the two driving flanges are respectively fixed on the upper flanges of the two torque sensors, vertical bolts are fixed on the driving flanges, and nuts are connected to the vertical bolts in a threaded manner;
and the two torque measuring instruments are electrically connected with one torque sensor respectively through signal wires.
Preferably, the fixed support comprises a fixed base plate, two spacing adjusting sliders, a positioning plate and a puller bolt, the lower flange is fixed in the middle of the fixed base plate, the two spacing adjusting sliders are fixed on the fixed base plate and located on two sides of the lower flange, the puller bolt is in threaded connection with the spacing adjusting sliders, a small end of the puller bolt abuts against a rail web of the steel rail, and the positioning plate compresses the edge of the bottom of the steel rail.
Preferably, the lower surface of the positioning plate is provided with a limiting flange, and the side surface of the limiting flange is limited and abutted to the edge of the bottom of the steel rail.
Preferably, a plurality of positioning holes are transversely formed in the positioning plate, the positioning plate is fixedly connected with the spacing adjusting slider through positioning plate positioning screws, and when the positioning plate positioning screws penetrate through different positioning holes, the transverse positions of the positioning plate on the spacing adjusting slider are different.
Preferably, the locking assembly comprises a stud bolt and a locking nut, the stud bolt penetrates through the distance adjusting sliding blocks on two sides of the steel rail, and the locking nuts are respectively in threaded connection with two ends of the stud bolt.
The utility model also discloses another kind of portable upright bolt spanner moment of torsion calibrator, include:
the fixing assembly comprises a locking assembly, a fixing support and a single-side clamping frame, the fixing support and the single-side clamping frame are respectively attached to the steel rail from two transverse sides, and the fixing support and the single-side clamping frame are connected through the locking assembly and clamp the steel rail;
the torque sensor is provided with an upper flange and a lower flange, and the lower flange is fixedly connected with the fixed support;
the driving flange is fixed on the upper flange, a vertical bolt is fixed on the driving flange, and a nut is connected to the vertical bolt in a threaded manner;
the torque measuring instrument is electrically connected with the torque sensor through a signal wire.
Preferably, the fixed support comprises a fixed base plate, two spacing adjusting sliders, a positioning plate and a puller bolt, the lower flange is fixed in the middle of the fixed base plate, the two spacing adjusting sliders are fixed on the fixed base plate and located on two sides of the lower flange, the puller bolt is in threaded connection with the spacing adjusting sliders, a small end of the puller bolt abuts against a rail web of the steel rail, and the positioning plate compresses the edge of the bottom of the steel rail.
Preferably, the lower surface of the positioning plate is provided with a limiting flange, and the side surface of the limiting flange is limited and abutted to the edge of the bottom of the steel rail.
Preferably, a plurality of positioning holes are transversely formed in the positioning plate, the positioning plate is fixedly connected with the spacing adjusting slider through positioning plate positioning screws, and when the positioning plate positioning screws penetrate through different positioning holes, the transverse positions of the positioning plate on the spacing adjusting slider are different.
Preferably, the locking assembly comprises a stud bolt and a locking nut, the stud bolt penetrates through the spacing adjusting sliding block on one side of the steel rail and the single-side clamping frame on one side of the steel rail, and the locking nuts are respectively in threaded connection with two ends of the stud bolt.
The utility model discloses for prior art gain following technological effect:
1. the current highest peak value real-time capturing and measuring capacity of the torque measuring instrument is 11500 times/second, and the peak value detection requirements in dynamic load measurement, pneumatic and electric wrench verification applications with higher requirements are met;
2. the calibration data in each channel of the torquemeter can be output by a printer, can be transferred to the torquemeter with the same model in a manual mode, and can also be transmitted to another instrument in a serial communication mode, so that the efficiency of transferring the calibration data is greatly improved, and the application safety under extreme conditions is further ensured;
3. the torquemeter has low requirements on a power supply, but has up to 100 ten thousand display divisions, and meets the metering detection requirements of 0.05% -0.1% or higher precision;
4. the calibrator has the advantages of light design, convenience in carrying, quickness and firmness in installation and wide application occasions, and can be used for calibrating the torque precision of the wrench in each workshop of a railway engineering department and carrying out online detection on the wrench operation site.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and 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 diagram of a viewing angle of a portable torque calibrator for a vertical bolt wrench according to embodiment 1 of the present invention;
fig. 2 is a schematic structural view of another view angle of the portable vertical bolt wrench torque calibrator according to embodiment 1 of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2;
FIG. 4 is a schematic structural view of a drive flange;
FIG. 5 is a schematic structural view of a fixed base plate;
FIG. 6 is a schematic structural diagram of a spacing adjustment slider;
FIG. 7 is a schematic view of a positioning plate;
description of reference numerals: 1, a torque sensor; 2 driving the flange; 3, a torque measuring instrument; 4, erecting a bolt; 5, steel rails; 6 a signal line; 7, a sleeve; 8 fixing the bottom plate; 9, a spacing adjusting slide block; 10, positioning a plate; 11, tightly pressing the bolt; 12, limiting and blocking edges; 13, positioning holes; 14 positioning plate positioning screws; 15 waist holes; 16 positioning plate fastening bolts; 17 stud bolts; the nut is locked 18.
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 work belong to the protection scope of the present invention.
The utility model aims at providing a portable standing bolt spanner moment of torsion calibrator for solve the technical problem that above-mentioned prior art exists, can be anytime and anywhere to each workshop, each point implement the examination.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
Examples 1,
As shown in fig. 1 to 7, the present embodiment provides a portable torque verifier for a wrench with a double-ended socket for verifying a torque of the wrench, which includes a fixing assembly, two torque sensors 1, two driving flanges 2, and two torque measuring instruments 3.
Wherein, the fixed subassembly includes locking Assembly and two fixing support, and two fixing support are from horizontal both sides laminating rail 5 respectively (in this embodiment, vertically be the extending direction of rail 5), and two fixing support pass through locking Assembly and link to each other and press from both sides tight rail 5. The torque sensor 1 is provided with an upper flange and a lower flange, and the lower flanges of the two torque sensors 1 are fixedly connected with a fixed support respectively. The two driving flanges 2 are respectively fixed on the upper flanges of the two torque sensors 1, the driving flanges 2 are fixed with vertical bolts 4, and the vertical bolts 4 are in threaded connection with nuts. Two torque measurement appearance 3 are respectively with a torque sensor 1 through signal line 6 electricity connection, and torque sensor 1 and torque measurement appearance 3 all can directly be bought from the market, and therefore no longer repeated here.
When the portable vertical bolt 4 wrench torque calibrator is used, a power supply of the torque measuring instrument 3 is connected, the sleeve 7 of the mechanical wrench is sleeved into the nut on the vertical bolt 4 to be screwed, and the torque measuring instrument 3 can display a torque value in real time. And after the set torque value of the mechanical wrench is reached, the mechanical wrench automatically stops working. At this point, the inertia effect will cause the torque to continue. By combining the factors of continuous impact, load and the like, the motor wrench needs to compensate the pre-impact amount, so that the result meets the requirement. The measured torque is formulated as: n is N + Δ N, where N is an actual torque value, N is a set torque value, and Δ N is a control advance related to speed and load. Although the set torque value of the mechanical wrench is a rated value measured by a measuring department, the comprehensive factors of the wrench in actual use are not considered, the calibrator is measured by the measuring department, a torque measuring instrument 3 with the precision 100 times higher than that of a torque controller of the mechanical wrench is adopted, the torque measuring instrument 3 captures the actual tightening peak value of a tightened nut and displays the actual tightening peak value on the torque measuring instrument 3, a detector records the torque peak value and then presses a 'clear' key, the torque measuring instrument 3 displays an empty load state, and then the second measurement is carried out, and the cycle is repeated. According to the measurement of 20 times, the average difference value between the actual tightening torque peak value captured by the torque measuring instrument 3 and the set torque value of the mechanical wrench is obtained, so that the control advance or continuous impact coefficient related to the speed and the load of the torque control system of the mechanical wrench is adjusted, and the torque value actually achieved by the mechanical wrench is ensured to meet the standard requirement.
The type of the fixing mount is various as long as the fixing of the torque sensor 1 can be achieved. In this embodiment, the fixing support includes a fixing bottom plate 8, a spacing adjustment slider 9, a positioning plate 10, and a tightening bolt 11. The lower flange is fixed in the middle of the fixed bottom plate 8, and the two spacing adjusting sliders 9 are fixed on the fixed bottom plate 8 and located on two sides of the lower flange. The puller bolt 11 is in threaded connection with the spacing adjusting slider 9, the small head end of the puller bolt 11 is abutted against the rail web of the steel rail 5, and the positioning plate 10 compresses the bottom edge of the steel rail 5.
Further, in order to improve the fixing effect, the lower surface of the positioning plate 10 of the present embodiment is provided with a limiting rib 12, and the side surface of the limiting rib 12 is limited and abutted against the bottom edge of the steel rail 5.
Furthermore, in order to adapt to the center distance of the socket 7 of different wrenches, a plurality of positioning holes 13 are transversely formed in the positioning plate 10 of the embodiment, and the positioning plate 10 is fixedly connected with the distance adjusting slide block 9 through positioning plate positioning screws 14. When the positioning plate positioning screws 14 pass through different positioning holes 13, the transverse positions of the positioning plate 10 on the spacing adjustment slider 9 are different. Because the limit flange 12 on the lower surface of the positioning plate 10 is in limit abutment with the bottom edge of the steel rail 5, the distance between the fixed support and the steel rail 5 can be adjusted by adjusting the positioning hole 13 where the positioning screw 14 of the positioning plate is located, thereby adapting to the center distance of different mechanical wrench sleeves 7. Two waist holes 15 are further formed in the positioning plate 10, the two waist holes 15 are located on the two longitudinal sides of the positioning hole 13 respectively, the length direction of each waist hole 15 is transverse, and a positioning plate fastening bolt 16 penetrates through each waist hole 15 and is in threaded connection with the spacing adjusting slider 9.
The type of locking assembly is varied as long as it enables the two fixing abutments to clamp the rail 5. In this embodiment, the locking assembly includes a stud bolt 17 and a lock nut 18. The stud bolt 17 passes through the spacing adjusting slide blocks 9 on the two sides of the steel rail 5, and the plurality of locking nuts 18 are respectively in threaded connection with the two ends of the stud bolt 17. By tightening the locking nuts 18 on both sides of the rail 5, the two fixed supports can be made to clamp the rail 5.
Examples 2,
The embodiment provides a portable torque calibrator for a vertical bolt wrench, which is used for calibrating the torque of a mechanical wrench with a single sleeve and comprises a fixing assembly, a torque sensor 1, a driving flange 2 and a torque measuring instrument 3.
Wherein, fixed subassembly includes locking Assembly, fixing support and unilateral card frame, and fixing support and unilateral card frame are from horizontal both sides laminating rail 5 respectively (in this embodiment, vertically be the extending direction of rail 5), and fixing support and unilateral card frame link to each other and press from both sides tight rail 5 through locking Assembly. The torque sensor 1 is provided with an upper flange and a lower flange, and the lower flange is fixedly connected with a fixed support. The driving flange 2 is fixed on the upper flange, the vertical bolt 4 is fixed on the driving flange 2, and the screw cap is connected on the vertical bolt 4 in a threaded manner. The torque measuring instrument 3 is electrically connected to the torque sensor 1 through a signal line 6.
When the portable vertical bolt 4 wrench torque calibrator is used, a power supply of the torque measuring instrument 3 is connected, the sleeve 7 of the mechanical wrench is sleeved into the nut on the vertical bolt 4 to be screwed, and the torque measuring instrument 3 can display a torque value in real time. And after the set torque value of the mechanical wrench is reached, the mechanical wrench automatically stops working. At this point, the inertia effect will cause the torque to continue. By combining the factors of continuous impact, load and the like, the motor wrench needs to compensate the pre-impact amount, so that the result meets the requirement. The measured torque is formulated as: n is N + Δ N, where N is an actual torque value, N is a set torque value, and Δ N is a control advance related to speed and load. Although the set torque value of the mechanical wrench is a rated value measured by a measuring department, the comprehensive factors of the wrench in actual use are not considered, the calibrator is measured by the measuring department, a torque measuring instrument 3 with the precision 100 times higher than that of a torque controller of the mechanical wrench is adopted, the torque measuring instrument 3 captures the actual tightening peak value of a tightened nut and displays the actual tightening peak value on the torque measuring instrument 3, a detector records the torque peak value and then presses a 'clear' key, the torque measuring instrument 3 displays an empty load state, and then the second measurement is carried out, and the cycle is repeated. According to the measurement of 20 times, the average difference value between the actual tightening torque peak value captured by the torque measuring instrument 3 and the set torque value of the mechanical wrench is obtained, so that the control advance or continuous impact coefficient related to the speed and the load of the torque control system of the mechanical wrench is adjusted, and the torque value actually achieved by the mechanical wrench is ensured to meet the standard requirement.
The type of the fixing mount is various as long as the fixing of the torque sensor 1 can be achieved. In this embodiment, the fixing support includes a fixing bottom plate 8, a spacing adjustment slider 9, a positioning plate 10, and a tightening bolt 11. The lower flange is fixed in the middle of the fixed bottom plate 8, and the two spacing adjusting sliders 9 are fixed on the fixed bottom plate 8 and located on two sides of the lower flange. The puller bolt 11 is in threaded connection with the spacing adjusting slider 9, the small head end of the puller bolt 11 is abutted against the rail web of the steel rail 5, and the positioning plate 10 compresses the bottom edge of the steel rail 5.
Furthermore, in order to improve the fixing effect, the lower surface of the positioning plate 10 is provided with a limiting flange 12, and the side surface of the limiting flange 12 is in limiting and abutting contact with the bottom edge of the steel rail 5.
Furthermore, in order to adapt to the center distance of the socket 7 of different wrenches, a plurality of positioning holes 13 are transversely formed in the positioning plate 10 of the embodiment, and the positioning plate 10 is fixedly connected with the distance adjusting slide block 9 through positioning plate positioning screws 14. When the positioning plate positioning screws 14 pass through different positioning holes 13, the transverse positions of the positioning plate 10 on the spacing adjustment slider 9 are different. Because the limit flange 12 on the lower surface of the positioning plate 10 is in limit abutment with the bottom edge of the steel rail 5, the distance between the fixed support and the steel rail 5 can be adjusted by adjusting the positioning hole 13 where the positioning screw 14 of the positioning plate is located, thereby adapting to the center distance of different mechanical wrench sleeves 7. Two waist holes 15 are further formed in the positioning plate 10, the two waist holes 15 are located on the two longitudinal sides of the positioning hole 13 respectively, the length direction of each waist hole 15 is transverse, and a positioning plate fastening bolt 16 penetrates through each waist hole 15 and is in threaded connection with the spacing adjusting slider 9.
The type of locking assembly is varied as long as it enables the two fixing abutments to clamp the rail 5. In this embodiment, the locking assembly includes a stud bolt 17 and a lock nut 18. The stud bolt 17 passes through the spacing adjusting slide block 9 on one side of the steel rail 5 and the unilateral clamping frame on one side of the steel rail 5, and the plurality of locking nuts 18 are respectively in threaded connection with two ends of the stud bolt 17. By tightening the locking nuts 18 on both sides of the rail 5, the two fixed supports can be made to clamp the rail 5.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (10)
1. The utility model provides a portable upright bolt spanner torque calibrator which characterized in that includes:
the fixing assembly comprises a locking assembly and two fixing supports, the two fixing supports are attached to the steel rail from two transverse sides respectively, and the two fixing supports are connected through the locking assembly and clamp the steel rail;
the two torque sensors are provided with an upper flange and a lower flange, and the lower flanges of the two torque sensors are fixedly connected with one fixed support respectively;
the two driving flanges are respectively fixed on the upper flanges of the two torque sensors, vertical bolts are fixed on the driving flanges, and nuts are connected to the vertical bolts in a threaded manner;
and the two torque measuring instruments are electrically connected with one torque sensor respectively through signal wires.
2. The portable torque calibrator for vertical bolt wrenches as claimed in claim 1, wherein the fixing support comprises a fixing base plate, spacing adjusting sliders, a positioning plate and a tightening bolt, the lower flange is fixed in the middle of the fixing base plate, the two spacing adjusting sliders are fixed on the fixing base plate and located on two sides of the lower flange, the tightening bolt is in threaded connection with the spacing adjusting sliders, a small end of the tightening bolt abuts against a rail web of a steel rail, and the positioning plate presses the bottom edge of the steel rail.
3. The portable torque calibrator for vertical bolt wrenches as claimed in claim 2, wherein the lower surface of the positioning plate is provided with a limiting rib, and the side surface of the limiting rib is limited and abutted against the bottom edge of the steel rail.
4. The portable torque calibrator for vertical bolt wrenches as recited in claim 2, wherein a plurality of positioning holes are transversely formed in the positioning plate, the positioning plate is fixedly connected to the spacing adjustment slider by positioning plate positioning screws, and when the positioning plate positioning screws pass through different positioning holes, the transverse positions of the positioning plate on the spacing adjustment slider are different.
5. The portable torque calibrator for stud wrenches as claimed in claim 2, wherein the locking assembly comprises a stud bolt passing through the distance adjusting blocks on both sides of the rail and locking nuts respectively threadedly coupled to both ends of the stud bolt.
6. The utility model provides a portable upright bolt spanner torque calibrator which characterized in that includes:
the fixing assembly comprises a locking assembly, a fixing support and a single-side clamping frame, the fixing support and the single-side clamping frame are respectively attached to the steel rail from two transverse sides, and the fixing support and the single-side clamping frame are connected through the locking assembly and clamp the steel rail;
the torque sensor is provided with an upper flange and a lower flange, and the lower flange is fixedly connected with the fixed support;
the driving flange is fixed on the upper flange, a vertical bolt is fixed on the driving flange, and a nut is connected to the vertical bolt in a threaded manner;
the torque measuring instrument is electrically connected with the torque sensor through a signal wire.
7. The portable torque calibrator for vertical bolt wrenches as claimed in claim 6, wherein the fixing support comprises a fixing base plate, spacing adjusting sliders, a positioning plate and a tightening bolt, the lower flange is fixed in the middle of the fixing base plate, the two spacing adjusting sliders are fixed on the fixing base plate and located on two sides of the lower flange, the tightening bolt is in threaded connection with the spacing adjusting sliders, a small end of the tightening bolt abuts against a rail web of a steel rail, and the positioning plate presses the bottom edge of the steel rail.
8. The portable torque calibrator for vertical bolt wrenches as claimed in claim 7, wherein the lower surface of the positioning plate is provided with a limiting rib, and the side surface of the limiting rib is limited and abutted against the bottom edge of the steel rail.
9. The portable torque calibrator for vertical bolt wrenches as recited in claim 7, wherein a plurality of positioning holes are transversely formed in the positioning plate, the positioning plate is fixedly connected to the spacing adjustment slider by positioning plate positioning screws, and the positioning plate has different transverse positions on the spacing adjustment slider when the positioning plate positioning screws pass through different positioning holes.
10. The portable torque calibrator for stud wrenches as claimed in claim 7, wherein the locking assembly comprises a stud bolt and a locking nut, the stud bolt passes through the spacing adjustment slider on one side of the rail and the one-side jig on one side of the rail, and the plurality of locking nuts are respectively in threaded connection with both ends of the stud bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022498110.9U CN213632529U (en) | 2020-11-03 | 2020-11-03 | Portable vertical bolt spanner torque calibrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022498110.9U CN213632529U (en) | 2020-11-03 | 2020-11-03 | Portable vertical bolt spanner torque calibrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213632529U true CN213632529U (en) | 2021-07-06 |
Family
ID=76628748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022498110.9U Active CN213632529U (en) | 2020-11-03 | 2020-11-03 | Portable vertical bolt spanner torque calibrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213632529U (en) |
-
2020
- 2020-11-03 CN CN202022498110.9U patent/CN213632529U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102128992B (en) | Test system for no-load and locked-rotor characteristics of handheld electric tool | |
| CN213632529U (en) | Portable vertical bolt spanner torque calibrator | |
| CN115156900A (en) | Method for calibrating connection precision of guide rail of flexible transmission system and connection mechanism | |
| CN112213026A (en) | Portable vertical bolt spanner torque calibrator | |
| CN202018482U (en) | Hand-held electric tool zero load and locked-rotor characteristic test system | |
| CN107059512A (en) | A kind of electronic gauge adjustment car | |
| CN219996406U (en) | Automatic detection device for railway fastener bolts | |
| CN112393900A (en) | Ball screw pair friction testing device | |
| CN210268602U (en) | Detection system for torsion angle of aluminum alloy ladder stand and foot roller | |
| CN216801242U (en) | Longitudinal beam bending system | |
| CN210441772U (en) | Equipment for measuring assembly tolerance of bridge expansion device | |
| CN206004619U (en) | A kind of testing jig | |
| CN111283475B (en) | Dynamic adjusting method for precision of guide rail of large numerical control planer type milling machine body | |
| CN201227652Y (en) | Calibration tools for rolling-mill horizontal roll gap deviation | |
| CN207215029U (en) | The measuring system of longitudinal displacement of steel rail | |
| CN203824724U (en) | Adjustable wheel set mounting device | |
| CN209961099U (en) | Multipurpose L-shaped plate checking fixture | |
| CN217126722U (en) | End beam deviation correcting device of electric double-beam bridge crane | |
| CN216012928U (en) | Urban railway vehicle secondary skeleton detection device | |
| CN112730222A (en) | Automatic anti-slip coefficient detection device | |
| CN219007823U (en) | Non-punching type on-orbit mounting device for shear sensor | |
| CN215322108U (en) | H-shaped steel column adjusting tool for contact net | |
| CN212458308U (en) | A calibration device for contact net geometric parameters measures | |
| CN211120926U (en) | Dimension measuring tool for locomotive framework | |
| CN113131866B (en) | Test tool for load test of photovoltaic module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |