CN221144896U - Hydraulic cylinder stroke measuring device - Google Patents
Hydraulic cylinder stroke measuring device Download PDFInfo
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- CN221144896U CN221144896U CN202321736887.1U CN202321736887U CN221144896U CN 221144896 U CN221144896 U CN 221144896U CN 202321736887 U CN202321736887 U CN 202321736887U CN 221144896 U CN221144896 U CN 221144896U
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- hydraulic cylinder
- guide rail
- linear guide
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- trolley
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- 238000009434 installation Methods 0.000 description 6
- 238000011900 installation process Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
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- 238000000034 method Methods 0.000 description 3
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- 238000012360 testing method Methods 0.000 description 3
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Abstract
The utility model discloses a hydraulic cylinder stroke measuring device, which belongs to the technical field of hydraulic cylinder measuring equipment and comprises a linear guide rail, a moving trolley, a driving motor, a supporting part, a position scale, a position information marking part and a supporting seat; the mobile trolley is assembled on the linear guide rail; the driving motor is arranged on the movable trolley and drives the movable trolley; the support component is arranged on the mobile trolley and is provided with a support plane; the position scale is provided with scale marks arranged along the extending direction of the linear guide rail; the position information marking component is arranged on the mobile trolley; the support seat is arranged at one end side of the linear guide rail and is provided with a support part for applying pressure vertically pointing to the support plane to the hydraulic cylinder. According to the technical scheme, the defects of the prior art are overcome through the design of the measuring assembly, and the requirements of high-precision and quick automatic stroke measurement of the hydraulic cylinder are met.
Description
Technical Field
The utility model belongs to the technical field of hydraulic cylinder measuring equipment, and particularly relates to a hydraulic cylinder stroke measuring device.
Background
With the continuous improvement of the manufacturing level of high-end hydraulic elements in China, the hydraulic cylinder is increasingly widely applied in the mechanical field. A hydraulic cylinder is a device that converts fluid energy into mechanical energy, with the force and movement being produced by the fluid pressure in the hydraulic system. The stroke of a hydraulic cylinder is one of the important indicators for measuring the performance and control accuracy of the hydraulic cylinder.
In order to ensure the quality and performance of the hydraulic cylinders, various performance measurements must be made before shipment. The accuracy of the hydraulic cylinder stroke is very high. At present, most of existing high-precision stroke measuring devices adopt a high-precision displacement sensor, and are combined with the precise matching installation of the output end of a piston rod of a hydraulic cylinder so as to ensure the accuracy of a measuring result and meet the precision requirement.
However, existing measuring devices have some problems. First, the precise fitting installation of the hydraulic cylinder piston rod with the displacement sensor requires an installer with a high degree of technical skill and operational experience. This more complex installation process increases production costs and time consumption and is susceptible to human error. Particularly in the measurement and detection process of large-batch products, the installation quality and accuracy of each hydraulic cylinder are more difficult to ensure.
Second, existing measurement devices lack active driving force. When the initial position of the hydraulic cylinder piston rod is not at the origin, complicated calibration and adjustment are required for stroke measurement of the non-origin position. This not only increases the complexity of the operation, but may also lead to inaccuracy and unreliability of the measurement results.
In addition, due to the limitations of the existing measuring devices, rapid measurement of the hydraulic cylinder stroke cannot be achieved. In some application scenarios, fast trip measurements are critical for efficient production and accurate control. The slow measurement speed of the existing devices cannot meet such a demand, resulting in limited production efficiency.
Therefore, it is necessary to provide a novel hydraulic cylinder stroke measuring device, which can overcome the limitations of the prior art and realize the aim of measuring the stroke of the hydraulic cylinder with high precision and rapidness.
Disclosure of utility model
Aiming at the problems existing in the prior art, the utility model provides the hydraulic cylinder stroke measuring device which solves the problems of complex and time-consuming installation process, limited accuracy, slower measuring speed and the like of the conventional hydraulic cylinder stroke measuring device.
The utility model is realized in such a way, and the hydraulic cylinder stroke measuring device is characterized by comprising a linear guide rail, a moving trolley, a driving motor, a supporting part, a position scale, a position information marking part and a supporting seat; the movable trolley is assembled on the linear guide rail and moves along the linear guide rail; the driving motor is arranged on the movable trolley, and drives the movable trolley to move along the linear guide rail; the support component is arranged on the mobile trolley and is provided with a support plane perpendicular to the extending direction of the linear guide rail; the position scale is provided with scale marks arranged along the extending direction of the linear guide rail; the position information marking component is arranged on the mobile trolley and is used for displaying the position information of the mobile trolley corresponding to the scale mark; the support seat is arranged at one end side of the linear guide rail and is provided with a support part which applies pressure to the hydraulic cylinder vertically pointing to the support plane.
In the above technical solution, it is preferable that the linear guide rail comprises a rack parallel to the linear guide rail, and the output shaft of the driving motor is provided with a gear meshed with the rack.
In the above technical solution, preferably, the linear guide is a horizontal linear guide, and the supporting plane of the supporting member is a vertical supporting plane opposite to the supporting seat.
In the above technical solution, preferably, the position scale is a grating scale provided at a side of the moving trolley, and the position information marking component is a grating scale reading head adapted to the grating scale.
In the above technical scheme, preferably, the supporting seat comprises a front seat body and a rear seat body, the front seat body is provided with an arc-shaped concave part for supporting the rigid body of the hydraulic cylinder, the rear seat body is provided with two supporting plates which are arranged in bilateral symmetry, the supporting plates are provided with waist holes for supporting the lateral ear shafts of the hydraulic cylinder, lateral orifices of the waist holes are opposite to the supporting plane, and the inner sides of the waist holes form the supporting parts.
The utility model provides a hydraulic cylinder stroke measuring device, which introduces a travelling trolley to form a following component, and solves the problem of hydraulic cylinder stroke measurement in the prior art. The specific advantages and effects are as follows:
1. High-precision measurement: the high-precision measurement of the travel of the hydraulic cylinder is realized through the position information marking component on the mobile trolley. The marking means can provide accurate position information, making the measurement result more reliable and accurate.
2. Simplifying the installation process: the measuring component is not required to be installed on the piston rod of the hydraulic cylinder, and the hydraulic cylinder is simply supported, so that the complexity of the installation process is reduced. The precise matching installation is not needed, the technical requirements and the operation difficulty of installation personnel are greatly reduced, and the installation time and the cost are saved.
3. The automatic function: the movable trolley has an active power function and can assist the piston rod of the hydraulic cylinder to return to the initial original point position. Meanwhile, the functions of automatic follow-up, jacking and the like are realized in the hydraulic cylinder stroke measurement process, and the measurement flexibility and accuracy are improved.
4. Quick measurement: by introducing an active power function and automatic control, the quick measurement of the stroke of the hydraulic cylinder is realized. Compared with the slow measuring speed in the prior art, the utility model can improve the production efficiency, save time and meet the requirement for quick travel measurement.
In summary, the technical scheme of the utility model overcomes the defects of the prior art by designing the measuring assembly, meets the requirements of high-precision and quick automatic stroke measurement of the hydraulic cylinder, and has important practical application value and economic benefit.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
Fig. 2 is a view showing a state of use of the hydraulic cylinder stroke measuring device according to the present utility model.
Detailed Description
The present utility model will be described in further detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
In order to solve the problems of complex and time-consuming installation process, limited accuracy, slower measurement speed and the like of the traditional hydraulic cylinder stroke measurement device, the utility model provides the hydraulic cylinder stroke measurement device which has the advantages and effects of forming a following structure by introducing a mobile trolley, measuring with high precision, simplifying the installation process, automatically measuring with automatic functions, quickly measuring and the like, solves the limitation of the traditional hydraulic cylinder stroke measurement mode, and meets the requirements of high-precision and quick automatic stroke measurement of the hydraulic cylinder. For further explanation of the structure of the present utility model, the detailed description is as follows in connection with the accompanying drawings:
Referring to fig. 1 and 2, a hydraulic cylinder stroke measuring device includes a linear guide rail 1, a traveling carriage 2, a driving motor 3, a rack 4, a supporting member 5, a position scale 6, a position information marking member 7, and a supporting base. In addition to the above basic components, the device is also provided with a base 8 for supporting and mounting the above components, wherein the base is a steel structure welding piece, and the upper part of the base is a plane supporting part. The linear guide rail, the rack, the position scale and the supporting seat are all fixed on the base by using fasteners.
The linear guide rail is two parallel horizontal linear guide rails, and the moving trolley is assembled on the linear guide rail and can move along the guide rail. The moving trolley and the horizontal linear guide rail can adopt a sliding block type assembly structure. The sliding block with low friction coefficient is installed at the bottom of the movable trolley, and corresponding guide rail grooves are formed in the horizontal linear guide rail. The slider may be in contact with the rail groove through a ball or a sliding bearing, thereby achieving a smooth sliding motion. The driving motor is arranged on the movable trolley and is a servo motor, and the driving motor is meshed with a rack parallel to the linear guide rail through a gear arranged on the output shaft, so that the movable trolley is pushed to move along the guide rail.
The support part is arranged on the movable trolley, the support part is a right-angle steel member, and the support part is provided with a support plane perpendicular to the extending direction of the linear guide rail. The support plane is a vertical support plane which is opposite to the support seat and is used for jacking the front end face of the piston rod of the tested hydraulic cylinder, and axial support force is applied to the piston rod of the hydraulic cylinder.
The position scale is a device with scale marks and is arranged along the extending direction of the linear guide rail. The position information marking component is arranged on the mobile trolley and used for displaying scale identification information corresponding to the position of the mobile trolley. The position scale can be a grating scale, and the position information marking component is a grating scale reading head matched with the grating scale. Grating scales and grating scale reading heads are known in the art and are widely used in precision position measurement and motion control systems in the industrial and scientific fields. Because of its high accuracy and reliability, grating scales and grating scale readheads have become common position measurement techniques in industry and scientific research. They are widely used in the fields of numerical control machine tools, semiconductor manufacturing equipment, laser processing machines, precision measuring instruments, etc., to realize accurate position control and motion positioning.
The support seat is located at one end side of the linear guide rail and is provided with a support part capable of applying pressure vertically directed to the support plane to the hydraulic cylinder. The support seat consists of a front seat body 9 and a rear seat body 10. The front seat body has an arcuate recess for supporting the rigid body of the hydraulic cylinder, and the front portion of the cylinder body of the hydraulic cylinder is directly supported by the recess. The rear seat body is provided with two support plates which are arranged in bilateral symmetry, and waist holes 10-1 for supporting trunnions on the side of the hydraulic cylinder are arranged on the support plates. The lateral orifices of these waist holes are opposite to the support plane, while the interior of the waist holes constitutes the support. The trunnion on the left and right sides of the rigid body rear part of the hydraulic cylinder can be inserted into the waist hole, the hydraulic cylinder is horizontally arranged through the support of the front seat body and the rear seat body, and meanwhile, the front end of the piston rod is opposite to the support plane.
The steps of measuring the village and the hydraulic cylinder stroke in the utility model comprise:
1. The hydraulic cylinder 11 to be tested is mounted on a testing device: the test cylinder is placed on the front and rear housings and the cylinder trunnion is retained in the waist hole of the rear housing.
2. Zeroing the piston rod position of the tested hydraulic cylinder: since the cylinder piston rod initial position is not necessarily located at the origin (the limit position of the piston rod retracted state), it is necessary to push the cylinder piston rod back to the origin position. The program sets output torque T1 for the driving motor and controls the driving motor to drive the movable trolley to move towards the hydraulic cylinder. After the supporting plane of the supporting part on the moving trolley is contacted with the top end of the piston rod of the hydraulic cylinder, the supporting part on the moving trolley can push the piston rod of the hydraulic cylinder back to the original point position because the set torque T1 is larger than the friction force of the piston rod of the hydraulic cylinder, and the driving motor stops outputting the torque. The grating ruler reading head records an initial position S1 of the piston rod of the hydraulic cylinder at the origin.
3. And measuring the stroke of the tested hydraulic cylinder: when the stroke test of the hydraulic cylinder is performed, the program control supplies pressure oil with a certain pressure P1 to the hydraulic cylinder, so that the hydraulic cylinder is ready to extend. Meanwhile, the device control program sets torque T2 for the driving motor and controls the driving motor to drive the movable trolley to generate force moving towards the direction of the hydraulic cylinder. At this time, the set torque T2 is smaller than the cylinder rod ejection force F2, and the piston rod of the cylinder begins to extend. In the extending process, the piston rod of the hydraulic cylinder always keeps applying pressure F2 to the moving trolley, and the moving trolley moves along with the piston rod. When the piston rod of the hydraulic cylinder is fully extended, the piston rod of the hydraulic cylinder immediately stops moving. Meanwhile, under the inertia action of the piston rod of the hydraulic cylinder, the moving trolley can continuously move a distance towards the extending direction of the piston rod, a certain gap L1 is formed between the supporting part of the moving trolley and the end part of the piston rod, and then the output torque T2 of the moving trolley enables the moving trolley to quickly eliminate the gap and continuously compress the end part of the hydraulic cylinder piston rod.
4. Calculating a measurement result: the grating ruler reading head records the position difference S3 between the position S2 of the hydraulic cylinder piston rod at the moment and the initial position S1 of the hydraulic cylinder piston rod origin, and the S3 is the stroke of the hydraulic cylinder.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (4)
1. A hydraulic cylinder stroke measuring device characterized by comprising:
A linear guide rail;
The mobile trolley is assembled on the linear guide rail and moves along the linear guide rail;
The driving motor is arranged on the movable trolley and drives the movable trolley to move along the linear guide rail;
The support component is mounted on the mobile trolley and is provided with a support plane perpendicular to the extending direction of the linear guide rail;
The position scale is provided with scale marks arranged along the extending direction of the linear guide rail;
The position information marking component is arranged on the mobile trolley and is used for displaying the position information of the mobile trolley corresponding to the scale mark;
the support seat is arranged at one end side of the linear guide rail and is provided with a support part for applying pressure to the hydraulic cylinder vertically pointing to the support plane;
The supporting seat comprises a front seat body and a rear seat body, wherein the front seat body is provided with an arc-shaped concave part for supporting a rigid body of the hydraulic cylinder, the rear seat body is provided with two supporting plates which are arranged in a bilateral symmetry mode, each supporting plate is provided with a waist hole for supporting a lateral ear shaft of the hydraulic cylinder, a lateral orifice of each waist hole is opposite to the supporting plane, and the inner side of each waist hole forms the supporting part.
2. The hydraulic cylinder stroke measurement device according to claim 1, wherein: the linear guide rail comprises a rack parallel to the linear guide rail, and a gear meshed with the rack is arranged on an output shaft of the driving motor.
3. The hydraulic cylinder stroke measurement device according to claim 2, wherein: the linear guide rail is a horizontal linear guide rail, and the supporting plane of the supporting component is a vertical supporting plane opposite to the supporting seat.
4. A hydraulic cylinder stroke measuring device as claimed in claim 3 wherein: the position scale is a grating scale arranged on the side of the movable trolley, and the position information marking component is a grating scale reading head matched with the grating scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321736887.1U CN221144896U (en) | 2023-07-04 | 2023-07-04 | Hydraulic cylinder stroke measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321736887.1U CN221144896U (en) | 2023-07-04 | 2023-07-04 | Hydraulic cylinder stroke measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221144896U true CN221144896U (en) | 2024-06-14 |
Family
ID=91421988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321736887.1U Active CN221144896U (en) | 2023-07-04 | 2023-07-04 | Hydraulic cylinder stroke measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221144896U (en) |
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2023
- 2023-07-04 CN CN202321736887.1U patent/CN221144896U/en active Active
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