Device for detecting elongation of double-end stud of cylinder end of diaphragm compressor
By designing the detection devices of brackets, fixed thimbles, movable thimbles and driving mechanisms, the problem of measuring the elongation of the diaphragm compressor cylinder head double-head studs is solved, and fast, convenient and high-precision detection is achieved, suitable for different models of Cylinder head.
Patent Information
- Application Number
- CN202421227312.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-05-31
AI Technical Summary
It is difficult to accurately measure the elongation of the cylinder head double-head stud of the diaphragm compressor, and common tools cannot be directly applicable to this scenario, resulting in inconvenient measurement and low accuracy.
A detection device including a bracket, a fixed thimble, a movable thimble and a driving mechanism is designed to achieve rapid installation and precise measurement through the fitting of the slide groove, a slide post and a spring. The dial is used for reading and is removable fixed. The thimble achieves range adjustment.
It realizes fast, convenient and high-precision detection of the elongation of the double-head stud, and is suitable for different models of diaphragm compressor cylinder heads, improving the applicability and accuracy of the inspection.
Smart Images
Figure CN222317907U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of diaphragm compressor assembly detection, in particular to a diaphragm compressor cylinder head double-headed stud elongation detection device. Background Art
[0002] The cylinder head structure of the diaphragm compressor is as follows Figure 4 As shown, it is mainly composed of a cylinder body 13, a cylinder head 14, a stud 15 and a nut 16. The cylinder body 13 and the cylinder head 14 are connected as a whole through the stud 15 and the nut 16 to clamp the diaphragm and the seal. When the diaphragm compressor is in normal operation, the diaphragm cavity of the cylinder body and the cylinder head is subjected to repeated alternating impacts of the hydraulic oil and the compressor gas medium, and the stud is subjected to poor stress. Therefore, it is particularly important to control the pre-tightening force of the cylinder head stud. Excessive or insufficient pre-tightening force or uneven pre-tightening force of each bolt may cause damage to the bolts or deformation of the cylinder head and cylinder body, and seal failure.
[0003] At present, one of the methods for controlling the preload force of stud bolts is to measure the elongation. There are two common methods:
[0004] 1. Use an outside micrometer to measure. The disadvantage of this detection method is that the measuring range of the outside micrometer is small. For studs of different lengths, it is often necessary to prepare multiple outside micrometers, and the measuring points on both ends of the studs must be pre-processed, otherwise the measurement results will be inaccurate.
[0005] 2. Use special measuring tools. Such tools usually directly or indirectly use a dial indicator with a base, ejector pin, slider fork mechanism, etc. to measure the change value before and after the stud is stretched. Such tools are customized according to the workpiece and scene, and cannot be directly used for measuring the double-ended studs on the cylinder head.
[0006] Therefore, a device for detecting the elongation of the double-headed studs of the cylinder head of a diaphragm compressor is needed to solve the above-mentioned problem. Utility Model Content
[0007] The utility model aims to provide a device for detecting the elongation of double-headed studs in a cylinder head of a diaphragm compressor, so as to solve the problems existing in the prior art proposed in the above-mentioned background technology.
[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0009] A device for detecting the elongation of a double-headed stud of a cylinder head of a diaphragm compressor comprises a bracket, a fixed ejector pin and a movable ejector pin, wherein the fixed ejector pin is detachably connected to one end of the bracket, the movable ejector pin is slidably connected to a through hole at the other end of the bracket, and slide grooves are provided at both ends of the side walls of the through hole, the movable ejector pin is connected to a slide column that slides in the slide groove, the movable ejector pin is provided with a spring, the spring is installed between a boss on the movable ejector pin and the bracket, the bracket is also provided with a mounting frame, the mounting frame is connected to a dial indicator, the detection rod of the dial indicator is on the same straight line as the movable ejector pin, and the bracket is provided with a driving mechanism for driving the movable ejector pin to slide.
[0010] Preferably, the driving mechanism includes a handle and a connecting rod, the handle is rotatably connected to the bracket via a first pin, the upper end of the handle is rotatably connected to the connecting rod via a second pin, and the other end of the connecting rod is rotatably connected to the sliding column.
[0011] Preferably, one end of the bracket is provided with a threaded hole, one end of the fixing ejector pin is provided with an external thread, and the fixing ejector pin is mounted on the bracket by means of a threaded connection.
[0012] Preferably, the support and the handle surfaces are both provided with hollow structures.
[0013] Compared with the prior art, the beneficial effects of the utility model are:
[0014] 1. The utility model can quickly install the detection device to the detection position of the stud through the coordinated arrangement of the bracket, the fixed ejector pin, the movable ejector pin and the driving mechanism, and quickly obtain the length of the stud through the coordinated arrangement of the movable ejector pin and the dial indicator, so that the detection of the elongation of the stud is more convenient and the measurement accuracy is high.
[0015] 2. The utility model provides a detachable fixed ejector pin, which can be quickly and conveniently replaced according to detection requirements, thereby adjusting the detection range, making the detection device more applicable. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.
[0017] Figure 2 For this utility model Figure 1 Schematic diagram of the local enlarged structure at point A in the middle.
[0018] Figure 3 This is a schematic diagram of the support structure of the utility model.
[0019] Figure 4 It is a schematic diagram of the state of the utility model when detecting the elongation of the double-headed stud.
[0020] In the figure: 1. bracket; 2. fixed ejector pin; 3. movable ejector pin; 4. slide groove; 5. slide column; 6. handle; 7. pin 1; 8. connecting rod; 9. pin 2; 10. spring; 11. mounting bracket; 12. dial indicator; 13. cylinder block; 14. cylinder head; 15. stud; 16. nut. DETAILED DESCRIPTION
[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.
[0022] See also Figure 1-4 , the utility model provides the following technical solutions:
[0023] A device for detecting the elongation of a double-ended stud of a diaphragm compressor cylinder head comprises a bracket 1, a fixed ejector pin 2 and a movable ejector pin 3. The fixed ejector pin 2 is detachably connected to one end of the bracket 1. A threaded hole is provided at one end of the bracket 1. An external thread is provided at one end of the fixed ejector pin 2. The fixed ejector pin 2 is mounted on the bracket 1 by a threaded connection. The fixed ejector pin 2 is detachably connected, which is convenient for replacing fixed ejector pins 2 of different lengths, thereby changing the measuring range of the detection device. The device is suitable for detecting the assembly of cylinder heads of diaphragm compressors of different models.
[0024] The movable ejector pin 3 is slidably connected to the through hole at the other end of the bracket 1. Slide grooves 4 are provided at both ends of the side walls of the through hole. The movable ejector pin 3 is connected to a slide column 5 that slides in the slide groove 4. A spring 10 is installed on the movable ejector pin 3. The spring 10 is installed between the boss on the movable ejector pin 3 and the bracket 1. The spring 10 can drive the movable ejector pin 3 to slide in the direction of the fixed ejector pin 2, so as to realize the compression detection of the fixed ejector pin 2 and the movable ejector pin 3 on the two ends of the stud 15.
[0025] A mounting frame 11 is also installed on the bracket 1, and a dial indicator 12 is connected to the mounting frame 11. The detection rod of the dial indicator 12 is in the same straight line as the movable ejector pin 3. The sliding of the movable ejector pin 3 can drive the detection rod of the dial indicator 12 to move, thereby realizing the detection of the elongation of the stud 15.
[0026] The bracket 1 is provided with a driving mechanism for driving the movable ejector pin 3 to slide; the driving mechanism comprises a handle 6 and a connecting rod 8, the handle 6 is rotatably connected to the bracket 1 via a pin 1 7, the upper end of the handle 6 is rotatably connected to the connecting rod 8 via a pin 2 9, and the other end of the connecting rod 8 is rotatably connected to the sliding column 5, and the detection device can be quickly installed to the detection position of the stud 15 by pressing and rotating the handle 6, and the operation is convenient and quick; the surfaces of the bracket 1 and the handle 6 are provided with a hollow structure, and the setting of the hollow structure can reduce the weight of the detection device and make the detection device lighter.
[0027] The working process of the utility model is as follows:
[0028] When it is necessary to detect the elongation of the stud 15 of the cylinder head of the diaphragm compressor, the operator holds the bracket 1 of the detection device with one hand and presses the handle 6 with the other hand. The handle 6 rotates to drive the connecting rod 8 to move. The connecting rod 8 pushes the sliding column 5, so that the sliding column 5 drives the movable ejector pin 3 to slide until the distance between the movable ejector pin 3 and the fixed ejector pin 2 exceeds the length of the stud 15 of the cylinder head.
[0029] Respectively rotate the movable ejector pin 3 and the fixed ejector pin 2 relative to the center holes at both ends of the stud 15, loosen the handle 6, and the movable ejector pin 3 returns to its original position and slides under the elastic force of the spring 10, so that the movable ejector pin 3 and the fixed ejector pin 2 are pressed and contacted with both ends of the stud 15. Slightly shake the detection device until the reading of the dial indicator 12 does not change, then the length of the stud 15 can be read and recorded. By tightening the nut 16 and recording the length of the stud 15 several times during the process, the elongation of the stud 15 can be obtained.
[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A device for detecting the elongation of a stud bolt on a cylinder head of a diaphragm compressor, characterized in that: The invention comprises a bracket (1), a fixed ejector pin (2) and a movable ejector pin (3), wherein the fixed ejector pin (2) is detachably connected to one end of the bracket (1), the movable ejector pin (3) is slidably connected to a through hole at the other end of the bracket (1), two sides of the side wall of the through hole are provided with a slide groove (4), the movable ejector pin (3) is connected to a slide column (5) which slides in the slide groove (4), a spring (10) is installed on the movable ejector pin (3), the spring (10) is installed between a boss on the movable ejector pin (3) and the bracket (1), a mounting frame (11) is also installed on the bracket (1), a dial indicator (12) is connected to the mounting frame (11), a detection rod of the dial indicator (12) and the movable ejector pin (3) are on the same straight line, and a driving mechanism for driving the movable ejector pin (3) to slide is installed on the bracket (1).
2. A diaphragm compressor cylinder head stud elongation detection device according to claim 1, characterized in that: The driving mechanism comprises a handle (6) and a connecting rod (8); the handle (6) is rotatably connected to the bracket (1) via a first pin (7); the upper end of the handle (6) is rotatably connected to the connecting rod (8) via a second pin (9); the other end of the connecting rod (8) is rotatably connected to the sliding column (5).
3. A diaphragm compressor cylinder head stud elongation detection device according to claim 1, characterized in that: One end of the bracket (1) is provided with a threaded hole, one end of the fixed ejector pin (2) is provided with an external thread, and the fixed ejector pin (2) is mounted on the bracket (1) by means of a threaded connection.
4. A diaphragm compressor cylinder head stud elongation detection device according to claim 2, characterized in that: The surfaces of the bracket (1) and the handle (6) are both provided with hollow structures.