CN212407186U - Hydraulic cylinder stroke measuring device - Google Patents
Hydraulic cylinder stroke measuring device Download PDFInfo
- Publication number
- CN212407186U CN212407186U CN202020731588.9U CN202020731588U CN212407186U CN 212407186 U CN212407186 U CN 212407186U CN 202020731588 U CN202020731588 U CN 202020731588U CN 212407186 U CN212407186 U CN 212407186U
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- cylinder
- measuring
- outer cylinder
- measuring device
- hydraulic cylinder
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- 238000012544 monitoring process Methods 0.000 claims abstract description 20
- 238000007789 sealing Methods 0.000 claims description 4
- 239000000428 dust Substances 0.000 claims description 3
- 239000003245 coal Substances 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 description 5
- 238000005461 lubrication Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model discloses a pneumatic cylinder stroke measuring device relates to pneumatic cylinder technical field. The measuring device comprises a shell and a measuring component; the outer shell comprises an outer cylinder and a movable rod which is arranged in the outer cylinder and can move back and forth along the extension direction of the outer cylinder, one of the outer cylinder and the movable rod is fixedly connected with a cylinder body of the hydraulic cylinder, and the other one of the outer cylinder and the movable rod is fixedly connected with a piston rod of the hydraulic cylinder; the measuring assembly comprises a measuring part and a monitoring part, wherein one of the measuring part and the monitoring part is arranged at one end of the outer cylinder, which is far away from the moving rod, and the other one of the measuring part and the monitoring part is arranged on the moving rod. The utility model discloses a pneumatic cylinder stroke measuring device, the external pneumatic cylinder of arranging in, applicable pneumatic cylinder in having produced, the real-time good, do not destroy the structure of pneumatic cylinder, but wide application in various pneumatic cylinders. And the outer shell is arranged outside the measuring assembly of the measuring device, so that the measuring assembly can be protected, the influence of the external environment is avoided, the measuring precision is higher, and the measuring device can adapt to the severe underground environment of a coal mine.
Description
Technical Field
The utility model relates to a pneumatic cylinder technical field, concretely relates to pneumatic cylinder stroke measuring device based on laser sensor.
Background
At present, the measuring method of the elongation of the hydraulic cylinder mainly comprises two types of built-in elongation measurement and built-out elongation measurement. In the prior art, although a built-in measuring device has an accurate measuring result, the built-in measuring device cannot be applied to a produced hydraulic cylinder, and the cost is high. The external measuring device is not accurate enough to the measuring result of the elongation of the piston rod, and can generate accumulative error, and the external measuring device is not provided with a protection device and is easy to be influenced by the external environment.
Therefore, in view of the above problems, it is necessary to provide a stroke measuring device which is easy to install and use, low in cost and high in measurement accuracy, so as to meet the market demand.
SUMMERY OF THE UTILITY MODEL
According to the purpose of the utility model, the stroke measuring device of the hydraulic cylinder comprises a shell and a measuring component arranged in the shell; the outer shell comprises an outer cylinder and a movable rod which is arranged in the outer cylinder and can move back and forth along the extension direction of the outer cylinder, one of the outer cylinder and the movable rod is fixedly connected with a cylinder body of the hydraulic cylinder, and the other one of the outer cylinder and the movable rod is fixedly connected with a piston rod of the hydraulic cylinder; the measuring component comprises a measuring piece and a monitoring part for monitoring the measuring piece, wherein one of the measuring piece and the monitoring part is arranged at one end of the outer cylinder, which is far away from the moving rod, and the other one of the measuring piece and the monitoring part is arranged on the moving rod.
Preferably, the movable rod is a hollow rod, one end of the movable rod extending into the outer barrel is an open end, one end of the movable rod extending out of the outer barrel is a closed end, and one of the measuring part and the monitoring part is arranged on the inner wall of the closed end.
Preferably, a front end cover and a rear end cover are correspondingly detachably and fixedly mounted at two ends of the outer cylinder, the front end cover is mounted at one end of the outer cylinder, which is connected with the movable rod, and a through hole for the movable rod to pass through is formed in the middle of the outer cylinder; the rear end cover seals one end, far away from the moving rod, of the outer cylinder, and one of the measuring part and the monitoring part is installed in the rear end cover.
Preferably, the measuring part is a laser reflecting plate, and the monitoring part is a laser sensor; the laser emitted by the laser sensor vertically irradiates the laser reflecting plate and is parallel to the moving direction of the moving rod.
Preferably, the both ends of shell are provided with the mounting panel respectively, the shell passes through mounting panel and pneumatic cylinder fixed connection.
Preferably, the housing further comprises support rings respectively arranged on the inner wall of the outer cylinder and the inner wall of the front end cover and used for supporting and guiding the moving rod.
Preferably, the outer shell further comprises a dustproof ring which is arranged on the inner wall of the front end cover and used for sealing the outer cylinder.
Compared with the prior art, the utility model discloses a pneumatic cylinder stroke measuring device's advantage is:
(1) the measuring device is externally arranged on the hydraulic cylinder, is suitable for the produced hydraulic cylinder, has good real-time performance, does not damage the structure of the hydraulic cylinder, and can be widely applied to various hydraulic cylinders.
(2) The outer shell is arranged outside the measuring assembly of the measuring device, so that the measuring assembly can be protected and prevented from being influenced by the external environment, and the measuring device can adapt to the severe underground environment of a coal mine.
(3) The measuring component in the measuring device consists of the laser sensor and the laser reflecting plate, and the measuring precision is high.
Drawings
For a clear explanation of the embodiments or prior art solutions of the present invention, the drawings that are needed in the description of the embodiments or prior art 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 it is obvious for a person skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is the utility model discloses a pneumatic cylinder stroke measuring device's structure chart.
Fig. 2 is a front end cap structure view.
The part names represented by more numbers or letters in the figures are as follows:
1-outer cylinder; 2-moving the rod; 3-laser reflecting plate; 4-a laser sensor; 5-front end cover; 51-a connection end; 52-a via hole; 6-rear end cap; 7-mounting a plate; 8-a support ring; 9-dustproof ring.
Detailed Description
The following description briefly describes embodiments of the present invention with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work based on the embodiments of the present invention belong to the protection scope of the present invention.
Fig. 1-2 show a preferred embodiment of the present invention, the structure of which is analyzed in detail.
The device for measuring the stroke of the hydraulic cylinder shown in fig. 1 comprises a housing and a measuring assembly arranged in the housing.
The shell comprises an outer cylinder 1 and a movable rod 2 which is arranged in the outer cylinder 1 and can move back and forth along the extension direction of the outer cylinder 1. The outer cylinder 1 is fixedly connected with a hydraulic cylinder body, the moving rod 2 is fixedly connected with a hydraulic cylinder piston rod, and the hydraulic cylinder piston rod drives the moving rod 2 to move back and forth in the outer cylinder 1 when moving. Specifically, the movable rod 2 is a hollow rod, one end of the movable rod extending into the outer cylinder 1 is an open end, and the other end of the movable rod extending out of the outer cylinder 1 is a closed end. The front end cover 5 and the rear end cover 6 are correspondingly arranged at the two ends of the outer cylinder 1. As shown in fig. 2, the front end cap 5 is connected to one end of the outer cylinder 1 connected to the movable rod 2 through a connecting end 51, and a through hole 52 for passing the movable rod 2 is formed in the middle of the front end cap, and the inner diameter of the through hole 52 is the same as the outer diameter of the movable rod 2. The arrangement of the front end cover 5 can prevent dust and sundries from entering the outer barrel 1 to influence the accuracy of the measuring result. The rear end cover 6 is used for sealing one end of the outer cylinder 1 far away from the moving rod 2 and is fixedly connected with the outer cylinder 1 through threads.
The measuring assembly comprises a measuring piece and a monitoring part for monitoring the measuring piece. Specifically, the measuring part is a laser reflecting plate 3, and the monitoring part is a laser sensor 4. The laser sensor 4 is arranged in a rear end cover 6 on the outer cylinder 1, and the laser reflecting plate 3 is arranged on the inner wall of the closed end of the movable rod 2. The movable rod 2 is arranged to be a hollow rod, the laser reflecting plate 3 is arranged on the inner wall of the closed end, and then the laser reflecting plate 3 and the laser sensor 4 can keep a certain distance, so that when the movable rod 2 completely retracts into the outer barrel 1, the laser reflecting plate 3 is in the effective range of the laser sensor 4. The laser light emitted by the laser sensor 4 is perpendicularly irradiated on the laser reflection plate 3 and is parallel to the moving direction of the moving rod 2.
During measurement, the laser sensor 4 is arranged in the empty groove of the rear end cover, and the laser emission direction is adjusted, so that the measured data is the vertical distance from the laser sensor 4 to the closed end of the movable rod 2. Setting the distance between the closed end of the moving rod 2 and the laser sensor 1, which is measured by the laser sensor 1, as the original point when the piston rod of the hydraulic cylinder is not extended, and recording as L0; when the piston rod of the hydraulic cylinder extends, the movable rod 2 is driven to move forwards, the laser sensor 4 emits laser to the laser reflecting plate 3 at the closed end of the movable rod 2, the distance between the closed end of the movable rod 2 and the laser sensor 4 measured by the laser sensor 4 is recorded as L1, and the extension amount of the hydraulic cylinder is L1-L0.
Furthermore, mounting plates 7 are welded at two ends of the shell respectively, and the shell is fixedly connected with the hydraulic cylinder through the mounting plates 7.
Further, the housing further comprises support rings 8 which are respectively arranged on the inner wall of the outer cylinder 1 and the inner wall of the front end cover 5 and are used for supporting and guiding the moving rod 2. The setting of support ring 8 can support carriage release lever 2, prevents that the atress direction of carriage release lever 2 and 1 orientation of urceolus are inconsistent, leads to frictional force increase, and wearing and tearing are serious, influence device life. The support ring 8 supports and guides the moving bar 2 when the moving bar 2 moves horizontally, and the support ring 8 only guides when the moving bar 2 moves vertically. Oil is also coated between the moving rod 2 and the outer cylinder 1 for lubrication.
Further, the outer shell also comprises a dustproof ring 9 which is arranged on the inner wall of the front end cover 5 and used for sealing the outer cylinder 1 so as to prevent dust and the like from entering the device and influencing the measurement precision.
To sum up, the utility model discloses a pneumatic cylinder stroke measuring device arranges the pneumatic cylinder in outward, applicable in the pneumatic cylinder that has produced, and the real-time is good, do not destroy the structure of pneumatic cylinder, but wide application in various pneumatic cylinders. And the outer shell is arranged outside the measuring assembly of the measuring device, so that the measuring assembly can be protected, the influence of the external environment is avoided, the measuring precision is higher, and the measuring device can adapt to the severe underground environment of a coal mine.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. The stroke measuring device of the hydraulic cylinder is characterized by comprising a shell and a measuring component arranged in the shell; the outer shell comprises an outer cylinder (1) and a moving rod (2) which is arranged in the outer cylinder (1) and can move back and forth along the extension direction of the outer cylinder (1), one of the outer cylinder (1) and the moving rod (2) is fixedly connected with a cylinder body of the hydraulic cylinder, and the other is fixedly connected with a piston rod of the hydraulic cylinder; the measuring assembly comprises a measuring piece and a monitoring part for monitoring the measuring piece, wherein one of the measuring piece and the monitoring part is arranged at one end, far away from the moving rod (2), of the outer barrel (1), and the other one of the measuring piece and the monitoring part is arranged on the moving rod (2).
2. A hydraulic cylinder stroke measuring device according to claim 1, wherein the moving rod (2) is a hollow rod, one end of the moving rod extending into the outer cylinder (1) is an open end, the other end of the moving rod extending out of the outer cylinder (1) is a closed end, and one of the measuring member and the monitoring portion is mounted on the inner wall of the closed end.
3. The stroke measuring device of the hydraulic cylinder according to claim 1, wherein a front end cover (5) and a rear end cover (6) are detachably and fixedly mounted at two ends of the outer cylinder (1), the front end cover (5) is mounted at one end of the outer cylinder (1) connected with the movable rod (2), and a through hole (52) for the movable rod (2) to pass through is formed in the middle of the front end cover; the rear end cover (6) seals one end, far away from the moving rod (2), of the outer cylinder (1), and one of the measuring part and the monitoring part is installed in the rear end cover (6).
4. A cylinder stroke measuring device according to claim 1, wherein said measuring member is a laser reflector (3) and said monitoring portion is a laser sensor (4).
5. A hydraulic cylinder stroke measuring device according to claim 4, characterized in that the laser emitted by the laser sensor (4) is perpendicularly irradiated on the laser reflecting plate (3) and is parallel to the moving direction of the moving rod (2).
6. A hydraulic cylinder stroke measuring device according to claim 1, wherein the two ends of the housing are respectively provided with a mounting plate (7), and the housing is fixedly connected with the hydraulic cylinder through the mounting plates (7).
7. A cylinder stroke measuring device according to claim 3, wherein the housing further comprises support rings (8) respectively provided on the inner wall of the outer cylinder (1) and the inner wall of the front cover (5) for supporting and guiding the moving rod (2).
8. A cylinder stroke measuring device according to claim 3, wherein the housing further comprises a dust ring (9) disposed on the inner wall of the front cover (5) for sealing the outer cylinder (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020731588.9U CN212407186U (en) | 2020-05-07 | 2020-05-07 | Hydraulic cylinder stroke measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020731588.9U CN212407186U (en) | 2020-05-07 | 2020-05-07 | Hydraulic cylinder stroke measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212407186U true CN212407186U (en) | 2021-01-26 |
Family
ID=74375657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020731588.9U Expired - Fee Related CN212407186U (en) | 2020-05-07 | 2020-05-07 | Hydraulic cylinder stroke measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212407186U (en) |
-
2020
- 2020-05-07 CN CN202020731588.9U patent/CN212407186U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210126 |