CN211348299U - Rotating speed testing tool and rotating speed testing system - Google Patents
Rotating speed testing tool and rotating speed testing system Download PDFInfo
- Publication number
- CN211348299U CN211348299U CN202020453918.2U CN202020453918U CN211348299U CN 211348299 U CN211348299 U CN 211348299U CN 202020453918 U CN202020453918 U CN 202020453918U CN 211348299 U CN211348299 U CN 211348299U
- Authority
- CN
- China
- Prior art keywords
- rocker arm
- rotating speed
- roller
- shaft
- testing tool
- 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 title claims abstract description 73
- 238000004804 winding Methods 0.000 claims abstract description 17
- 230000002093 peripheral effect Effects 0.000 claims abstract description 3
- 230000009471 action Effects 0.000 claims description 5
- 238000001514 detection method Methods 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 abstract description 2
- 230000001360 synchronised effect Effects 0.000 abstract description 2
- 238000012512 characterization method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Landscapes
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
An embodiment of the utility model provides a rotational speed test frock and rotational speed test system relates to the test equipment field. The problem that detection precision is not high due to the fact that manual detection is adopted for detecting the rotating speed of the winch is solved. The roller is used for pressing the peripheral surface of a winding drum of the winch so as to synchronously rotate with the winding drum; and the encoder is connected with the roller and is used for outputting an electric signal representing the rotating speed of the roller. The rotating speed testing system comprises a rotating speed testing tool. The gyro wheel is pressed on the hoist engine cylinder, and at hoist engine cylinder pivoted in-process, the gyro wheel follows synchronous rotation, and the encoder passes through the rotational speed of measuring the gyro wheel, can be with the signal of telecommunication of output representation gyro wheel and hoist engine cylinder rotational speed to realize the accurate measurement of hoist engine rotational speed. Compared with manual detection, the precision is higher.
Description
Technical Field
The utility model relates to a test equipment field particularly, relates to a rotational speed test frock and rotational speed test system.
Background
With the further increase of customer demands and technical development, the testing of high-precision maneuverability of winches on cranes has become a new requirement. In general, the winding speed is obtained by manual detection, which often has the problem of low detection precision.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a rotational speed test fixture, it can improve the hoist engine rotational speed and adopt artifical the detection to have the not high problem of detection precision.
The utility model discloses an aim still includes, provides a rotational speed test system, and it can improve the hoist engine rotational speed and adopt artifical the detection to have the problem that the detection precision is not high.
The embodiment of the utility model discloses a can realize like this:
an embodiment of the utility model provides a rotational speed test fixture for the rotational speed of the reel of test hoist engine, rotational speed test fixture includes:
the roller is used for pressing the peripheral surface of the winding drum of the winch so as to synchronously rotate with the winding drum;
and the encoder is connected with the roller and is used for outputting an electric signal representing the rotating speed of the roller.
Additionally, the embodiment of the utility model provides a rotational speed test fixture can also have following additional technical characteristics:
optionally:
the rotating speed testing tool comprises a rocker arm, the rocker arm is rotatably arranged on a machine body of the winch, and the encoder and the roller are jointly arranged on the rocker arm;
the roller can contact the drum during rotation of the rocker arm.
Optionally:
the rotating speed testing tool further comprises a resetting piece; the reset piece is used for being connected with the rocker arm so that the rocker arm is pressed on the circumferential surface of the winding drum under the action of the reset force of the reset piece.
Optionally:
the reset piece adopts a spring; one end of the spring is connected with the rocker arm to tension the rocker arm, so that the rocker arm has a motion trend of staying at a preset position;
when the roller is in contact with the winding drum, the rocker arm has a movement tendency towards the return of the winding drum to a preset position, so that the roller is pressed against the winding drum.
Optionally:
the rotating speed testing tool further comprises a shaft; the shaft is used for being fixed on the machine body, the rocker arm is rotatably arranged on the shaft, and one end, which is not connected with the rocker arm, of the spring is fixed on the shaft so as to strain the rocker arm, so that the rocker arm has a motion trend of staying at a preset position.
Optionally:
the rotating speed testing tool further comprises a sleeve;
the sleeve is sleeved at one end of the shaft and can be selectively fixed at any position of the circumference of the shaft, and one end of the spring, which is not connected with the rocker arm, is connected to the sleeve;
when the sleeve is fixed relative to the shaft, the sleeve stretches the spring, so that the spring tensions the rocker arm, and the rocker arm has a tendency to stay in a preset position.
Optionally:
the rotating speed testing tool further comprises a bearing and a bolt;
the rocker arm is provided with a mounting hole, the bearing is sleeved in the mounting hole, and the bolt penetrates through the bearing to be connected with the end part of the shaft so as to rotatably arrange the rocker arm at the end part of the shaft.
Optionally:
the rotating speed testing tool further comprises a fixed support; the fixed support is used for being fixed on the machine body, and the shaft is fixed on the machine body through the fixed support.
Optionally:
the encoder and the roller are connected to two sides of the rocker arm.
The embodiment of the utility model provides a rotational speed test system is still provided. The rotating speed testing system comprises a rotating speed testing tool.
The utility model discloses rotational speed test fixture and rotational speed test system's beneficial effect includes, for example:
rotational speed test fixture, the gyro wheel is pressed on the hoist engine cylinder, at hoist engine cylinder pivoted in-process, the gyro wheel follows synchronous rotation, and the encoder is through the rotational speed of measuring the gyro wheel, can be with the signal of telecommunication of output characterization gyro wheel, obtains the signal of characterization hoist reel rotational speed in step, and the rotational speed of hoist reel has then characterized the rotational speed of hoist engine to can obtain the accurate measurement who realizes the hoist engine rotational speed. Compared with manual detection, the precision is higher.
The rotating speed testing system comprises the rotating speed testing tool, so that an electric signal representing the rotating speed of the winch can be obtained more accurately, and the problem of low accuracy of manual detection of the rotating speed is solved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a first view angle of a rotation speed testing tool according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a second view angle of the rotation speed testing tool according to the embodiment of the present invention;
fig. 3 is an exploded view of the rotational speed testing tool provided by the embodiment of the present invention.
Icon: 10-rotating speed testing tooling; 100-a roller; 200-an encoder; 210-a coding ontology; 220-a rotating shaft; 300-rocker arm; 310-assembly holes; 320-mounting holes; 400-a spring; 500-axis; 600-a sleeve; 700-fixing a support; 800-a first fixation plate; 810-second fixing plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the products of the present invention are used, the description is only for convenience of description and simplification, but the indication or suggestion that the indicated device or element must have a specific position, be constructed and operated in a specific orientation, and thus, should not be interpreted as a limitation of the present invention.
Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
The rotation speed testing tool provided by the embodiment is described in detail below with reference to fig. 1 to 3.
Referring to fig. 1, an embodiment of the present invention provides a rotation speed testing tool 10 for testing a rotation speed of a winding drum of a winding engine, where the rotation speed testing tool 10 includes: a roller 100, the roller 100 being pressed against the circumferential surface of the winding drum of the hoist to rotate synchronously with the winding drum; and the encoder 200 is connected with the roller 100 and used for outputting an electric signal representing the rotating speed of the roller 100.
The roller 100 is pressed against the reel so that friction is generated between the roller 100 and the reel, and the roller 100 is driven to rotate synchronously when the reel rotates. In order to represent the rotation speed of the drum by the rotation speed of the roller 100, the rotation axis of the roller 100 and the rotation axis of the roller 100 are parallel to each other and arranged side by side.
The encoder 200 is used to convert the rotation signal of the wheel 100 into an electrical signal, so that accurate detection information can be obtained for use.
Further, the outer surface of the roller 100 is provided with a plastic layer along the circumferential direction. The plastic layer is used for contacting with the cylinder to increase the frictional force between gyro wheel 100 and the cylinder, avoid gyro wheel 100 and cylinder to skid, influence the true validity of measuring data, in order to guarantee the accuracy.
Referring to fig. 1, in the present embodiment, the rotational speed testing tool 10 includes a rocker arm 300, the rocker arm 300 is rotatably disposed on a body of a winch, and the encoder 200 and the roller 100 are disposed on the rocker arm 300 together; during rotation of the rocker arm 300, the roller 100 is able to contact the spool.
The swing arm 300 serves to adjust the position of the roller 100 according to the position of the roll, so that the roller 100 can be brought into contact with the drum. When the roller 100 is in contact with the roll, the rotational axis of the roller 100 is parallel to the rotational axis of the drum. In actual arrangement, the swing arm 300 is disposed at one end of the drum, and the outer surface of the roller 100 is brought into contact with the surface of the drum during the rotation of the swing arm 300.
The encoder 200 and the roller 100 are both arranged on the rocker arm 300, and the encoder 200 moves along with the movement of the position of the roller 100, so that an electric signal representing the rotating speed of the roller 100 is conveniently output at any time.
Specifically, referring to fig. 3, the rocker arm 300 has a plate-shaped structure. With reference to the relative position shown in fig. 3, the rocker arm 300 includes a first end and a second end that are sequentially disposed from top to bottom. The first end is provided with a mounting hole 310 and the second end is provided with a mounting hole 320. The first end still is provided with a plurality of fixed orificess, and a plurality of fixed orificess set up along the interval in proper order around pilot hole 310.
Specifically, with continued reference again to FIG. 1, the encoder 200 and the roller 100 are attached to both sides of the rocker arm 300. The encoder 200 and the roller 100 are coupled to a first end of the swing arm 300, and the encoder 200 and the roller 100 are respectively located at both sides of the first end of the swing arm 300. To illustrate the relative positions in fig. 3, the encoder 200 is located to the left of the first end and the roller 100 is located to the right of the first end.
Specifically, the encoder 200 includes an encoding body 210 and a rotation shaft 220 connected to the encoding body 210. The code body 210 is fixed to one end of the swing arm 300 by a first fastening member passing through the fixing hole, and the rotation shaft 220 passes through the fitting hole 310 to be coupled to the roller 100.
Referring to fig. 1, in the present embodiment, the rotational speed testing tool 10 further includes a reset element; the reset member is used to be connected with the rocker arm 300 so that the rocker arm 300 is pressed against the circumferential surface of the drum by the restoring force of the reset member.
To press the swing arm 300 against the circumferential surface of the drum by the restoring force of the restoring member, the roller should act on the swing arm 300 so that the restoring member has a tendency to move to restore.
Specifically, referring to fig. 2, the return element is a spring 400; one end of the spring 400 is connected with the rocker arm 300 to tension the rocker arm 300, so that the rocker arm 300 has a movement tendency of staying at a preset position; when the roller 100 is in contact with the reel, the rocker arm 300 has a tendency to move towards the return of the reel to a preset position, so that the roller 100 presses against the reel.
The spring 400 causes the rocker arm 300 to have a tendency to return to the preset position as soon as it leaves the preset position. With reference to the relative position shown in fig. 1, the spring 400 causes the rocker arm 300 to stay in the position shown in fig. 1 (the preset position), and when the rocker arm 300 presses the roller 100 against the roller on the side facing away from us, the roller causes the rocker arm 300 to swing away from the preset position, and the restoring force of the spring 400 causes the rocker arm 300 to have a tendency to return inwardly to the preset position, thereby causing the roller 100 to press against the roller.
Specifically, one end of the spring 400 is connected between the first and second ends of the rocker arm 300. While being closer to the first end, the swing arm 300 can be more stably stopped at the preset position. Introduced in the relative position of fig. 1, the spring 400 is disposed on the left side of the rocker arm 300. Specifically, one end of the spring 400 is connected between the corresponding encoder 200 and the second end of the rocker arm 300.
Referring to fig. 1, in the present embodiment, the rotation speed testing tool 10 further includes a shaft 500; the shaft 500 is used to be fixed to the body, the rocker arm 300 is rotatably disposed on the shaft 500, and the end of the spring 400 not connected to the rocker arm 300 is fixed to the shaft 500 to tighten the rocker arm 300, so that the rocker arm 300 has a tendency to move to stay at a predetermined position.
The shaft 500 is fixed relative to the body, and the rocker arm 300 is fixed relative to the shaft 500 under the action of the spring 400, and the preset position is fixed relative to the body, that is, the preset position can be located inside the roller by adjusting the fixed position of the shaft 500 relative to the body, so that the roller pushes the rocker arm 300 to leave the preset position, and the rocker arm 300 presses the roller under the action of restoring force.
Referring to fig. 1, in the present embodiment, the rotation speed testing tool 10 further includes a sleeve 600; the sleeve 600 is sleeved on one end of the shaft 500 and can be selectively fixed at any position in the circumferential direction of the shaft 500, and one end of the spring 400, which is not connected with the rocker arm 300, is connected to the sleeve 600; when the sleeve 600 is fixed relative to the shaft 500, the sleeve 600 stretches the spring 400 such that the spring 400 tensions the rocker arm 300, causing the rocker arm 300 to have a tendency to stay in a predetermined position.
Referring to the relative position in fig. 1, the left end of the shaft 500 is used for being fixed on the machine body, the sleeve 600 is sleeved on the right end of the shaft 500, and the sleeve 600 can rotate 360 degrees relative to the shaft 500 and is fixed at any position in the circumferential direction of the shaft 500. One end of the spring 400 is connected to the sleeve 600, and the preset position where the rocker arm 300 can stay relative to the shaft 500 can be adjusted by adjusting the position of the sleeve 600 relative to the shaft 500, so that when the roller 100 contacts with the roller, the roller can be tightly abutted to the roller 100 by adjusting the sleeve 600.
Specifically, sleeve 600 sets up a plurality of spacing holes along circumference interval in proper order, wears to establish a locating part in every spacing hole, supports the surface of axle 500 through the locating part tip, realizes sleeve 600 fixed relative axle 500. Wherein, one end of the spring 400 may be connected to the stopper.
With continued reference to fig. 1, in this embodiment, the rotational speed testing tool 10 further includes a bearing 500 and a bolt; the rocker arm 300 is provided with a mounting hole 320, a bearing 500 is fitted into the mounting hole 320, and a bolt is connected to an end of the bearing 500 through the bearing 500 to rotatably dispose the rocker arm 300 at the end of the shaft 500.
To illustrate the relative position in fig. 1, the right end of the shaft 500 is provided with a threaded hole. The bolt passes through the bearing 500 and is connected with the screw hole. Further, one side of the mounting hole 320, which is far away from the screw hole, is provided with a convex edge, a nut is further arranged between the bearing 500 and the screw hole, the bearing 500 is limited between the nut and the convex edge, and the rocker arm 300 is prevented from shaking left and right on the bolt. Further, the right end of the sleeve 600 protrudes the right end of the shaft 500 so that the nut is received in the sleeve 600, and the left side surface of the rocker arm 300 has a gap from the right end surface of the sleeve 600.
With continued reference to fig. 1, in this embodiment, the rotating speed testing tool 10 further includes a fixing support 700; the fixing bracket 700 is used to be fixed on the machine body, and the shaft 500 is fixed on the machine body through the fixing bracket 700.
The top end of the fixing bracket 700 forms a first clamping member and a second clamping member, and a space for clamping the shaft 500 is formed between the first clamping member and the second clamping member. The first clamping member and the second clamping member are fastened and approached by a coupling member to clamp the fixing shaft 500.
With reference to fig. 1, in this embodiment, the rotation speed testing fixture 10 further includes a first fixing plate 800 and a second fixing plate 810, the first fixing plate 800 is used to be fixed on the winch body, the second fixing plate 810 is used to be connected to the fixed support 700, and the second fixing plate 810 is connected to the first fixing plate 800.
Specifically, the first fixing plate 800 is welded to the machine body, and may also be connected by bolts. The bottom end of the fixing support 700 is provided with a first connecting hole and a second connecting hole, the first fixing plate 800 is provided with a third connecting hole and a fourth connecting hole, and the second fixing plate 810 is provided with a fifth connecting hole and a sixth connecting hole, wherein the first connecting hole, the third connecting hole and the fifth connecting hole correspond to each other and are fixedly connected through a first fixing member (such as a bolt), and the second connecting hole, the fourth connecting hole and the sixth connecting hole correspond to each other and are fixedly connected through a second fixing member (such as a bolt).
The embodiment of the utility model provides a rotational speed test system is still provided. The rotating speed testing system comprises a rotating speed testing tool 10. The rotating speed testing system also comprises other detecting components, and conditions such as a control handle, a hydraulic system, electrical control, assembly quality, system abrasion and the like can be judged by synchronously and continuously and dynamically detecting the corresponding relation between the push-pull of the control lever and the winch control response time (the winch control response time can be obtained through the rotating speed of the winch) of a driver in the using process of the crane.
The rotating speed testing tool 10 provided by the embodiment at least has the following advantages:
the electric signal representing the rotating speed of the roller 100 is obtained through the encoder 200, and compared with manual detection, the accuracy is higher.
Through the rocker arm 300, the roller 100 can be adjusted to be in a tight position with the roller according to the position of the roller, so that the roller can be matched with the rollers at different positions conveniently.
Through the combined action of the reset piece and the rocker arm 300, the roller 100 is pressed on the roller, and the obtained monitoring data are ensured to be more accurate.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a rotational speed test fixture for the rotational speed of the reel of test hoist engine, its characterized in that, rotational speed test fixture includes:
the roller (100) is used for pressing the periphery of the winding drum of the winding machine to synchronously rotate with the winding drum;
an encoder (200), the encoder (200) being connected to the roller (100) and being configured to output an electrical signal indicative of a rotational speed of the roller (100).
2. The rotating speed testing tool according to claim 1, characterized in that:
the rotating speed testing tool comprises a rocker arm (300), wherein the rocker arm (300) is rotatably arranged on the body of the winch, and the encoder (200) and the roller (100) are jointly arranged on the rocker arm (300);
the roller (100) is capable of contacting the drum during rotation of the rocker arm (300).
3. The rotating speed testing tool according to claim 2, characterized in that:
the rotating speed testing tool further comprises a resetting piece; the reset piece is used for being connected with the rocker arm (300) so that the rocker arm (300) is pressed on the peripheral surface of the winding drum under the action of the reset force of the reset piece.
4. The rotating speed testing tool according to claim 3, characterized in that:
the reset piece adopts a spring (400); one end of the spring (400) is connected with the rocker arm (300) to tension the rocker arm (300) so that the rocker arm (300) has a motion tendency of staying at a preset position;
when the roller (100) is in contact with the reel, the rocker arm (300) has a tendency to move towards the return of the reel to the preset position, so as to press the roller (100) against the reel.
5. The rotating speed testing tool according to claim 4, characterized in that:
the rotating speed testing tool further comprises a shaft (500); the shaft (500) is used for being fixed on the machine body, the rocker arm (300) is rotatably arranged on the shaft (500), and one end, which is not connected with the rocker arm (300), of the spring (400) is fixed on the shaft (500) so as to tension the rocker arm (300) and enable the rocker arm (300) to have a motion tendency of staying at the preset position.
6. The rotating speed testing tool according to claim 5, characterized in that:
the rotating speed testing tool further comprises a sleeve (600);
the sleeve (600) is sleeved at one end of the shaft (500) and can be selectively fixed at any position of the circumference of the shaft (500), and one end of the spring (400), which is not connected with the rocker arm (300), is connected to the sleeve (600);
when the sleeve (600) is fixed relative to the shaft (500), the sleeve (600) stretches the spring (400) so that the spring (400) tensions the rocker arm (300) and the rocker arm (300) has a tendency to stay in the preset position.
7. The rotating speed testing tool according to claim 6, characterized in that:
the rotating speed testing tool further comprises a shaft (500) bearing and a bolt;
the rocker arm (300) is provided with a mounting hole (320), the shaft (500) bearing is sleeved in the mounting hole (320), and the bolt penetrates through the shaft (500) bearing and is connected with the end part of the shaft (500) so as to enable the rocker arm (300) to be rotatably arranged at the end part of the shaft (500).
8. The rotating speed testing tool according to claim 5, characterized in that:
the rotating speed testing tool further comprises a fixed support (700); the fixed support (700) is used for being fixed on the machine body, and the shaft (500) is fixed on the machine body through the fixed support (700).
9. The rotating speed testing tool according to any one of claims 3 to 8, characterized in that:
the encoder (200) and the roller (100) are connected to both sides of the swing arm (300).
10. A rotational speed test system is characterized in that:
the rotating speed testing system comprises the rotating speed testing tool set forth in any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020453918.2U CN211348299U (en) | 2020-03-31 | 2020-03-31 | Rotating speed testing tool and rotating speed testing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020453918.2U CN211348299U (en) | 2020-03-31 | 2020-03-31 | Rotating speed testing tool and rotating speed testing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211348299U true CN211348299U (en) | 2020-08-25 |
Family
ID=72100652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020453918.2U Expired - Fee Related CN211348299U (en) | 2020-03-31 | 2020-03-31 | Rotating speed testing tool and rotating speed testing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211348299U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112213512A (en) * | 2020-09-29 | 2021-01-12 | 重庆科技学院 | Dead weight formula rotational speed coding device |
-
2020
- 2020-03-31 CN CN202020453918.2U patent/CN211348299U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112213512A (en) * | 2020-09-29 | 2021-01-12 | 重庆科技学院 | Dead weight formula rotational speed coding device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3056421B1 (en) | Electric bicycle central axle torque speed sense device | |
| CN211348299U (en) | Rotating speed testing tool and rotating speed testing system | |
| JP2008064744A (en) | Encoder | |
| US9593993B1 (en) | Vehicle-mounted detecting device for a bicycle | |
| CN107271307A (en) | A kind of small load impact wear testing stand with tangential acceleration | |
| US20110083337A1 (en) | Apparatus for checking the accuracy of a circular path of a machine tool performed by a work spindle and/or a machine table | |
| CN204007976U (en) | A kind of brush spring torsion detector | |
| JP7286512B2 (en) | test indicator | |
| CN209972712U (en) | Bicycle driving detection device | |
| US9404724B2 (en) | Digital displacement measuring instrument | |
| CN201508172U (en) | Rotary drilling rig rotation detecting device | |
| CN210310744U (en) | Bicycle center shaft torque detection device | |
| CN2913706Y (en) | Hydraulic oil cylinder displacement sensor inside lifting eye | |
| CN217638027U (en) | Steering detection device for vehicles in factory | |
| CN111947948A (en) | Comprehensive detection device for steering force and steering torque of steering wheel of vehicle in field | |
| CN201724768U (en) | Rope tension detection mechanism with zero adjustment function | |
| CN212030863U (en) | Sensor mounting bracket | |
| CN112595196B (en) | Inner end face runout detection device for main pin hole of steering knuckle | |
| CN212300871U (en) | Comprehensive detection device for steering force and steering torque of steering wheel of vehicle in field | |
| CN207585809U (en) | Point contact torque sensor and Moped Scooter | |
| CN207007397U (en) | A kind of elevator traction cable tension detecting tool | |
| CN108474700B (en) | Measuring device and method for determining an operating parameter on a shaft | |
| CN207585820U (en) | End face contacts torque sensor and Moped Scooter | |
| CN215491627U (en) | Device and system for measuring rotation angle | |
| CN110182296B (en) | Bicycle center shaft torque detection 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: 20200825 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |