CN217521065U - Auxiliary clamp for loading small round bar sample for thermal expansion instrument test - Google Patents
Auxiliary clamp for loading small round bar sample for thermal expansion instrument test Download PDFInfo
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- CN217521065U CN217521065U CN202220527505.3U CN202220527505U CN217521065U CN 217521065 U CN217521065 U CN 217521065U CN 202220527505 U CN202220527505 U CN 202220527505U CN 217521065 U CN217521065 U CN 217521065U
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Abstract
The utility model relates to an auxiliary clamp that is used for experimental little round bar sample of thermal energy appearance to load belongs to metallurgical industry material test technical field. The technical scheme is as follows: one end of the upper clamping plate (11) is provided with an upper clamping head (13) which is integrated with the upper clamping plate (11), one end of the lower clamping plate (21) is provided with a lower clamping head (23) which is integrated with the lower clamping plate (21), and the upper clamping head (13) is provided with a rectangular notch (14) matched with the small round bar sample; the two sides of the upper clamping plate (11) are provided with upper clamping plate side plates (12), the two sides of the lower clamping plate (21) are provided with lower clamping plate side plates (22), the upper clamping plate side plates (12) and the lower clamping plate side plates (22) are connected through pin shafts (1), and the pin shafts (1) are provided with clamping torsion springs (2) matched with the upper clamping plate (11) and the lower clamping plate (21). The utility model has the advantages that: the installation of convenient little pole sample improves test efficiency and testing result accuracy.
Description
Technical Field
The utility model relates to an auxiliary clamp that is used for experimental little round bar sample of thermal energy appearance to load belongs to metallurgical industry material test technical field.
Background
A thermal expansion instrument (DIL) is an instrument for measuring the relationship between the dimensional change and the temperature of a sample under the conditions that the preset temperature control program (temperature rise, temperature drop, constant temperature and the combination thereof) and the load force are close to zero, and is used for accurately measuring the expansion and contraction conditions of a material in the heat treatment process. The push rod method is a classical method for measuring the thermal expansion of material, and adopts mechanical measurement principle, and uses the driving push rod and reverse push rod of thermal expansion instrument to respectively contact with two ends of round bar-shaped sample and tightly clamp them, and heats the sample in induction heater, and the length change of the sample under different temp. can be transferred to the displacement sensor contacted with the sample outside the heater by means of driving push rod, and can be measured. The thermal expansion instrument is simple in structure and easy to use, but the thermal expansion instrument belongs to a contact type relative measurement method, the requirement on the loading precision of a sample is high, the axis of a rod-shaped sample must be overlapped with the axes of the push rods on two sides, the centering effect of the sample is an important factor directly influencing the accuracy of a detection structure, and once the sample cannot be centered effectively, the measurement deviation of a displacement sensor is caused, so that the accuracy of a test result is influenced. Because the size of the rod-shaped sample is only phi 4mm multiplied by 10mm, the sample is difficult to be installed in place at one time when the sample is loaded, the centering of the sample and the ejector rods on two sides can be ensured by multiple times of adjustment, and sometimes the thermocouple wires welded on the sample are broken.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an auxiliary fixture that is used for the experimental small circle stick sample of thermal energy appearance to load makes things convenient for the installation of small circle stick sample, improves test efficiency and testing result accuracy, solves the problem that exists among the background art.
The technical scheme of the utility model is that:
an auxiliary clamp for loading a small round bar sample for a thermal expansion instrument test comprises a pin shaft, a clamping torsion spring, an upper clamping plate side plate, an upper chuck, a rectangular notch, a lower clamping plate side plate and a lower chuck, wherein the upper clamping plate and the lower clamping plate are both rectangular iron plates, one end of the upper clamping plate is provided with the upper chuck which is in an integral structure with the upper clamping plate, one end of the lower clamping plate is provided with the lower chuck which is in an integral structure with the lower clamping plate, the upper chuck and the lower chuck are both hollow semicircles, and the upper chuck is provided with the rectangular notch matched with the small round bar sample; the both sides of punch holder are equipped with the punch holder curb plate, and the both sides of lower plate are equipped with the lower plate curb plate, punch holder curb plate and lower plate curb plate are connected through the round pin axle, are equipped with on the round pin axle with punch holder and lower plate matched with tight torsional spring of clamp.
The inner diameters of the hollow semi-circular bodies of the upper chuck and the lower chuck are matched with the diameter of the ejector rod of the thermal expansion instrument.
The upper clamping plate side plates on the two sides of the upper clamping plate and the lower clamping plate side plates on the two sides of the lower clamping plate are all identical isosceles triangles.
The length of the upper chuck and the lower chuck is larger than the width of the upper clamping plate and the lower clamping plate.
The beneficial effects of the utility model are that: the opening and closing of the clamp are realized by the elasticity of the clamping torsion spring, and the clamp is assembled and disassembled. The upper chuck and the lower chuck of the hollow semicircular body can ensure that the small round bar sample and the ejector rods of the thermal expansion meters at two ends have the same axis, and the centering is accurate. The utility model has the advantages of being simple in structure and convenient in operation, the difficult operation and the installation accuracy error of having avoided manual loading little pole sample to cause have improved test efficiency and testing result accuracy.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a right side view of FIG. 1;
FIG. 3 is a top view of FIG. 1;
FIG. 4 is a front view of FIG. 1;
FIG. 5 is a rear view of FIG. 1;
FIG. 6 is a schematic view of the usage state of the present invention;
FIG. 7 is a partial enlarged view of the utility model in use;
in the figure: the device comprises a pin shaft 1, a clamping torsion spring 2, a small round bar sample 3, a thermocouple wire 4, a thermal expansion instrument transmission ejector rod 5, a thermal expansion instrument reverse ejector rod 6, an upper clamping plate 11, an upper clamping plate side plate 12, an upper clamping head 13, a rectangular notch 14, a lower clamping plate 21, a lower clamping plate side plate 22 and a lower clamping head 23.
Detailed Description
The invention will be further explained by way of example with reference to the accompanying drawings.
Referring to the attached drawings 1-7, an auxiliary clamp for loading a small round bar sample for a thermal expansion instrument test comprises a pin shaft 1, a clamping torsion spring 2, an upper clamping plate 11, an upper clamping plate side plate 12, an upper clamping head 13, a rectangular notch 14, a lower clamping plate 21, a lower clamping plate side plate 22 and a lower clamping head 23, wherein the upper clamping plate 11 and the lower clamping plate 21 are both rectangular iron plates, the upper clamping head 13 which is in an integral structure with the upper clamping plate 11 is arranged at one end of the upper clamping plate 11, the lower clamping head 23 which is in an integral structure with the lower clamping plate 21 is arranged at one end of the lower clamping plate 21, the upper clamping head 13 and the lower clamping head 23 are both hollow semi-circular bodies, and the rectangular notch 14 matched with the small round bar sample is arranged on the upper clamping head 13; the both sides of punch holder 11 are equipped with punch holder curb plate 12, and the both sides of lower plate 21 are equipped with lower plate curb plate 22, punch holder curb plate 12 and lower plate curb plate 22 are connected through round pin axle 1, are equipped with on the round pin axle 1 with punch holder 11 and lower plate 21 matched with tight torsional spring 2 of clamp.
In this embodiment, referring to fig. 1-7, the upper plate side plates 12 on both sides of the upper plate 11 and the lower plate side plates 22 on both sides of the lower plate 21 are both identical isosceles triangles, and the pin 1 passes through the upper plate side plates 12 on both sides of the upper plate 11, the lower plate side plates 22 on both sides of the lower plate 21 and the clamping torsion spring 2, and connects the three together to perform a limiting function. The clamping torsion spring 2 is used for realizing the opening and closing actions of the upper clamping plate 11 and the lower clamping plate 21.
The dimension position phi of the small round bar sample 3 is 4mm multiplied by 10mm, in order to ensure that the sample is superposed with the axis of a mandril of the thermal expansion instrument, the inner walls of the hollow semi-circular bodies of the upper chuck 13 and the lower chuck 23 are flat and smooth, and the diameter of the inner walls is 4mm and is the same as the diameter of the mandril and the sample clamped by the thermal expansion instrument.
The rectangular notch 14 on the upper chuck 13 is used for loading a small round bar sample with a thermocouple wire, so that the auxiliary clamp can be conveniently picked.
The utility model discloses a use as follows:
referring to the attached drawings 6 and 7, when the device is used, one end of the auxiliary clamp is used for clamping a transmission ejector rod 5 of the thermal expansion instrument, then the small round bar sample 3 is placed into the clamp from a rectangular notch 14 of an upper clamping plate 11, a reverse ejector rod 6 of the thermal expansion instrument is pushed to be inserted into the other end of the auxiliary clamp, centering and pressing of the small round bar sample 3 and the ejector rods on two sides can be achieved, and centering accuracy and operation efficiency in sample loading are improved.
Claims (4)
1. The utility model provides an auxiliary clamp that is used for experimental small round bar sample of thermal expansion appearance to load which characterized in that: the test device comprises a pin shaft (1), a clamping torsion spring (2), an upper clamping plate (11), an upper clamping plate side plate (12), an upper chuck (13), a rectangular notch (14), a lower clamping plate (21), a lower clamping plate side plate (22) and a lower chuck (23), wherein the upper clamping plate (11) and the lower clamping plate (21) are both rectangular iron plates, the upper chuck (13) which is in an integral structure with the upper clamping plate (11) is arranged at one end of the upper clamping plate (11), the lower chuck (23) which is in an integral structure with the lower clamping plate (21) is arranged at one end of the lower clamping plate (21), the upper chuck (13) and the lower chuck (23) are both hollow semi-circular bodies, and the upper chuck (13) is provided with the rectangular notch (14) matched with a small round bar sample; the both sides of punch holder (11) are equipped with punch holder curb plate (12), and the both sides of lower plate (21) are equipped with lower plate curb plate (22), punch holder curb plate (12) are connected through round pin axle (1) with lower plate curb plate (22), are equipped with on round pin axle (1) and press from both sides tight torsional spring (2) with punch holder (11) and lower plate (21) matched with.
2. The auxiliary fixture for loading of a dilatometer test small round bar sample according to claim 1, characterized in that: the inner diameters of the hollow semi-circular bodies of the upper chuck (13) and the lower chuck (23) are matched with the diameters of a transmission ejector rod (5) and a reverse ejector rod (6) of the thermal expansion instrument.
3. The auxiliary fixture for loading of a dilatometer test small round bar sample according to claim 1, characterized in that: the upper clamping plate side plates (12) on the two sides of the upper clamping plate (11) and the lower clamping plate side plates (22) on the two sides of the lower clamping plate (21) are all identical isosceles triangles.
4. The auxiliary fixture for loading of a dilatometer test small round bar sample according to claim 1, characterized in that: the length of the upper clamping head (13) and the lower clamping head (23) is larger than the width of the upper clamping plate (11) and the lower clamping plate (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220527505.3U CN217521065U (en) | 2022-03-11 | 2022-03-11 | Auxiliary clamp for loading small round bar sample for thermal expansion instrument test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220527505.3U CN217521065U (en) | 2022-03-11 | 2022-03-11 | Auxiliary clamp for loading small round bar sample for thermal expansion instrument test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217521065U true CN217521065U (en) | 2022-09-30 |
Family
ID=83369665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220527505.3U Active CN217521065U (en) | 2022-03-11 | 2022-03-11 | Auxiliary clamp for loading small round bar sample for thermal expansion instrument test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217521065U (en) |
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2022
- 2022-03-11 CN CN202220527505.3U patent/CN217521065U/en active Active
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