CN217504637U - Device for measuring straightness of piston rod - Google Patents
Device for measuring straightness of piston rod Download PDFInfo
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- CN217504637U CN217504637U CN202221162824.5U CN202221162824U CN217504637U CN 217504637 U CN217504637 U CN 217504637U CN 202221162824 U CN202221162824 U CN 202221162824U CN 217504637 U CN217504637 U CN 217504637U
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- dial indicator
- piston rod
- fixing unit
- straightness
- linear guide
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model discloses a device for measuring the straightness of a piston rod, which comprises a base, a linear guide rail, a piston rod fixing unit, a ball screw, a coupler, a manual wheel, a digital display dial indicator, a wireless data transmitter and a dial indicator fixing unit; the linear guide rail and the ball screw are arranged in parallel and are both arranged on the upper surface of the base; the piston rod fixing unit comprises 2 fixing seats, sliding blocks are arranged at the bottoms of the fixing seats, the sliding blocks are embedded into the linear guide rails, and V-shaped grooves are formed in the tops of the fixing seats; the ball screw comprises a screw rod and a nut sleeved on the circumference of the screw rod, the tail end of the screw rod is connected with a coupler, and the coupler is connected with a manual wheel; the upper end of the nut is provided with a dial indicator fixing unit, the digital display dial indicator is arranged on the dial indicator fixing unit, and the wireless data transmitter is arranged on the digital display dial indicator and is electrically connected with the digital display dial indicator. The device provided by the utility model, straightness accuracy, easy operation, convenience that can accurate measurement piston rod and other axle class members.
Description
Technical Field
The utility model relates to a motor car overhauls technical field, specifically is a device for measuring piston rod straightness accuracy.
Background
Along with the harmonious motor train unit enters an advanced repair batch overhaul stage, the motor train unit is overhauled more comprehensively. The oil pressure shock absorber is used as an important part on a suspension bogie of the high-speed motor train unit, and plays an important role in the aspects of stability, safety and passenger comfort of a train. When a train runs at a high speed for a long time, a piston rod in the shock absorber is inevitably bent and deformed under a high-pressure working condition, and further safety accidents such as oil leakage are caused. Therefore, in the process of overhauling the shock absorber, the straightness of the piston rod in the shock absorber is crucial to be detected.
At present, in an oil damper maintenance workshop of a motor train unit, a piston rod straightness measuring instrument is placed on a workbench, a dial indicator head is manually scratched along the surface of a rod, the maximum value and the minimum value in measured data of the dial indicator head are recorded, and the straightness is obtained through the difference between the maximum value and the minimum value. The existing detection method is not easy to operate, low in measurement efficiency and low in precision, and does not utilize a large-scale detection of the straightness of the piston rod on a workshop assembly line.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem in the background art, the utility model provides a following technical scheme:
the utility model provides a device for measuring the straightness of a piston rod, which comprises a base, a linear guide rail, a piston rod fixing unit, a ball screw, a coupler, a manual wheel, a digital display dial indicator, a wireless data transmitter and a dial indicator fixing unit;
the linear guide rail and the ball screw are arranged in parallel and are both arranged on the upper surface of the base;
the piston rod fixing unit comprises 2 fixing seats, sliding blocks are arranged at the bottoms of the fixing seats, the sliding blocks are embedded into the linear guide rails, and V-shaped grooves are formed in the tops of the fixing seats;
the ball screw comprises a screw rod and a nut sleeved on the circumference of the screw rod, the tail end of the screw rod is connected with a coupler, and the coupler is connected with a manual wheel;
the upper end of the nut is provided with a dial indicator fixing unit, the digital display dial indicator is arranged on the dial indicator fixing unit, and the wireless data transmitter is arranged on the digital display dial indicator and is electrically connected with the digital display dial indicator.
Further, the quantity of linear guide is 2, and 2 linear guide parallel arrangement.
Furthermore, both ends of the linear guide rail are provided with a baffle plate.
Further, the dial indicator fixing unit comprises an installation plate, a magnetic gauge stand and a support, the installation plate is fixed on the nut, the magnetic gauge stand is adsorbed on the installation plate, and the support is in threaded connection with the magnetic gauge stand.
Further, the apparatus also includes a wireless data receiver.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) the device for measuring the straightness of the piston rod provided by the utility model meets the requirement of high-precision measurement, and can accurately measure the straightness of the piston rod or other high-precision shaft members;
(2) the device for measuring the straightness of the piston rod provided by the utility model can flexibly adjust the positioning tool, and meet the measurement of rod pieces with various diameters and lengths;
(3) the utility model provides a device for measuring piston rod straightness accuracy through setting up wireless data transmitter and receiver, realizes the real-time reading and the record of data, and automatic record data is exported and is preserved to Excel, need not artifical reading and record numerical value, improves user convenience;
(4) the utility model provides a device for measuring piston rod straightness accuracy, equipment operation is simple, convenient, satisfies the requirement of quick clamping, detection, is favorable to batch assembly line maintenance operation.
Drawings
Fig. 1 is a schematic structural view of the device for measuring the straightness of the piston rod according to the present invention;
fig. 2 is a schematic diagram of a wireless data receiver according to the present invention.
In the figure: 1. a base; 2. a linear guide rail; 21. a baffle plate; 3. a piston rod fixing unit; 31. a fixed seat; 32. a slider; 33. a V-shaped groove; 4. a ball screw; 5. a coupling; 6. a hand-operated wheel; 7. a dial indicator is displayed in a digital mode; 8. a wireless data transmitter; 9. a dial indicator fixing unit; 91. mounting a plate; 92. a magnetic watch base; 93. a support; 10. a wireless data receiver.
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 efforts all belong to the protection scope of the present invention.
Example 1
The utility model provides a device for measuring piston rod straightness accuracy, as shown in figure 1-2, the device includes base 1, linear guide 2, piston rod fixed unit 3, ball 4, shaft coupling 5, manual wheel 6, digital display amesdial 7, wireless data transmitter 8 and amesdial fixed unit 9.
The linear guide rail 2 and the ball screw 4 are arranged in parallel and are both arranged on the upper surface of the base 1.
Preferably, base 1 is the marble material, and base 1's upper surface plane degree is 0.01mm, and the upper surface punches to inlay the thread bush, and each hole is 0.05mm relative to marble base's position degree, fixes linear guide 2 and ball 4 on marble base 1 mesa through bolt fastener.
The ball screw 4 is fixed on the marble base 1, the straightness in the vertical direction of the marble base is measured by taking a flat ruler as a reference, after the straightness is less than or equal to 0.015mm, the two linear guide rails 2 are fixed on the marble base 1, and the straightness in the horizontal direction of the linear guide rails 2 is less than or equal to 0.015mm and the straightness in the vertical direction of the linear guide rails 2 is less than or equal to 0.015mm by taking the ball screw 4 as a reference.
Piston rod fixed unit 3 includes 2 fixing bases 31, and the bottom of fixing base 31 is equipped with slider 32, and slider 32 embedding linear guide 2, V type groove 33 is seted up at the top of fixing base 31.
The 2 fixed seats 31 are fixed on the sliding block linear guide rail 2 through fasteners, the flatness of the upper surface of the sliding block 32 in the fixed seats 31 is +/-0.01 mm, and the flatness and the verticality of the surface of the V-shaped groove 33 are +/-0.005 mm.
The ball screw 4 comprises a screw and a nut sleeved on the circumference of the screw, the tail end of the screw is connected with a coupler 5, and the coupler 5 is connected with a manual wheel 6.
The upper end of the nut is provided with a dial indicator fixing unit 9, the digital display dial indicator 7 is arranged on the dial indicator fixing unit 9, and the wireless data transmitter 8 is arranged on the digital display dial indicator 7 and is electrically connected with the digital display dial indicator 7. Preferably, the wireless data transmitter 8 is provided with a Micro USB plug, and the Micro USB plug is inserted into a corresponding interface of the digital display dial indicator 7 to read and transmit the measurement data in real time.
Specifically, the number of the linear guide rails 2 is 2, and the 2 linear guide rails 2 are arranged in parallel.
Specifically, the two ends of the linear guide rail 2 are respectively provided with a baffle 21. The separation blade 21 is fixed on the two linear guide rails 2 through the fasteners, and the fixing seat 31 is prevented from accidentally falling off to cause damage.
Specifically, the dial indicator fixing unit 9 includes a mounting plate 91, a magnetic gauge stand 92 and a bracket 93, the mounting plate 91 is fixed to the nut, the magnetic gauge stand 92 is adsorbed on the mounting plate 91, and the bracket 93 is in threaded connection with the magnetic gauge stand 92. Preferably, a thread is arranged below the bracket 93 and is fixed to the magnetic gauge stand 92, and the digital display dial indicator 7 is connected with the bracket 93 through a clamping clip, so that multi-degree-of-freedom adjustment of the digital display dial indicator 7 can be realized.
Specifically, the device further comprises a wireless data receiver 10, wherein the wireless data receiver 10 is provided with a USB interface, and can be inserted into the USB interface of the computer end to receive and store data in real time.
The utility model discloses piston rod straightness accuracy is examined among the mainly used oil pressure shock absorber, prevents to appear incident such as oil leak because of the relatively poor reason of piston rod assembly straightness accuracy and arranges into in the operation process, also can be used to other high accuracy axle class spare part straightness accuracy and detect.
During the specific use, fix fixing base 31 to linear guide 2 on, through the interval of adjusting 2V type grooves 33, adapt to the piston rod of different length, drive digital display amesdial 7 through shaking manual wheel 6 and remove, make amesdial gauge outfit pass along the direction that is on a parallel with the piston rod, measure the real-time value, pass to wireless data receiver 10 through wireless data transmitter 8, find out maximum and minimum, calculate the difference between the two and obtain the straightness accuracy.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (5)
1. A device for measuring the straightness of a piston rod is characterized by comprising a base (1), a linear guide rail (2), a piston rod fixing unit (3), a ball screw (4), a coupler (5), a manual wheel (6), a digital display dial indicator (7), a wireless data transmitter (8) and a dial indicator fixing unit (9);
the linear guide rail (2) and the ball screw (4) are arranged in parallel and are both arranged on the upper surface of the base (1);
the piston rod fixing unit (3) comprises 2 fixing seats (31), sliding blocks (32) are arranged at the bottoms of the fixing seats (31), the sliding blocks (32) are embedded into the linear guide rails (2), and V-shaped grooves (33) are formed in the tops of the fixing seats (31);
the ball screw (4) comprises a screw rod and a nut sleeved on the circumference of the screw rod, the tail end of the screw rod is connected with a coupler (5), and the coupler (5) is connected with a manual wheel (6);
the dial indicator fixing unit (9) is installed at the upper end of the nut, the digital display dial indicator (7) is installed on the dial indicator fixing unit (9), and the wireless data transmitter (8) is installed on the digital display dial indicator (7) and is electrically connected with the digital display dial indicator (7).
2. Device for measuring the straightness of a piston rod according to claim 1, wherein the number of linear guides (2) is 2, and 2 linear guides (2) are arranged in parallel.
3. Device for measuring the straightness of a piston rod according to claim 1, characterised in that the linear guide (2) is provided with a stop (21) at both ends.
4. The device for measuring the straightness of the piston rod as claimed in claim 1, wherein the dial indicator fixing unit (9) comprises a mounting plate (91), a magnetic gauge stand (92) and a bracket (93), the mounting plate (91) is fixed on the nut, the magnetic gauge stand (92) is adsorbed on the mounting plate (91), and the bracket (93) is in threaded connection with the magnetic gauge stand (92).
5. Device for measuring the straightness of a piston rod according to claim 1, further comprising a wireless data receiver (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221162824.5U CN217504637U (en) | 2022-05-16 | 2022-05-16 | Device for measuring straightness of piston rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221162824.5U CN217504637U (en) | 2022-05-16 | 2022-05-16 | Device for measuring straightness of piston rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217504637U true CN217504637U (en) | 2022-09-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221162824.5U Active CN217504637U (en) | 2022-05-16 | 2022-05-16 | Device for measuring straightness of piston rod |
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| Country | Link |
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| CN (1) | CN217504637U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115876061A (en) * | 2023-02-01 | 2023-03-31 | 成都正西萨凡智能设备有限公司 | Detection device and detection method for slider machining surface of bending machine |
-
2022
- 2022-05-16 CN CN202221162824.5U patent/CN217504637U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115876061A (en) * | 2023-02-01 | 2023-03-31 | 成都正西萨凡智能设备有限公司 | Detection device and detection method for slider machining surface of bending machine |
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