CN101109679A - Low temperature elastic performance test device of compression spring - Google Patents

Low temperature elastic performance test device of compression spring Download PDF

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CN101109679A
CN101109679A CNA2007101202922A CN200710120292A CN101109679A CN 101109679 A CN101109679 A CN 101109679A CN A2007101202922 A CNA2007101202922 A CN A2007101202922A CN 200710120292 A CN200710120292 A CN 200710120292A CN 101109679 A CN101109679 A CN 101109679A
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guide rod
pillar
temperature
compression spring
low
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CN100541165C (en
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刘福顺
张新全
徐惠彬
李岩
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Beihang University
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Beihang University
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Abstract

本发明公开了一种压缩弹簧的低温弹性性能测试装置，该测试装置由低压直流电源、测试仪器、控温仪、液氮组成；所述低压直流电源输出36V，3A；所述测试仪器由冷阱组件(1)、支架组件(2)、位移传感器(3)、力传感器(4)、导杆组件(5)、试样夹具(6)组成。本发明测试装置可以适用于－196～25℃低温驱动装置里的形状记忆合金压缩弹簧的弹性性能测定，通过调节螺旋位移调节器(3)，从而带动力传感器(4)和石英玻璃导杆(51)向下移动，使石英玻璃导杆(51)下端面与试样导杆(66)上端面接触；并带动试样导杆(66)向下运动的同时压紧压缩弹簧(7)，从而测得压缩弹簧的弹性性能。本发明测试装置能够提供不同材料的压缩弹簧的位移恒定在一固定值，通过调节加热电流，将工作室的温度从低温向高温连续升温，或者从高温向低温连续降温，可以得到压缩弹簧的弹力随温度连续变化的关系。

Figure 200710120292

The invention discloses a low-temperature elastic performance testing device of a compression spring. The testing device is composed of a low-voltage DC power supply, a testing instrument, a temperature controller, and liquid nitrogen; the output of the low-voltage DC power supply is 36V, 3A; the testing instrument is composed of a cold It consists of a well assembly (1), a support assembly (2), a displacement sensor (3), a force sensor (4), a guide rod assembly (5), and a sample holder (6). The test device of the present invention can be applied to the measurement of the elastic performance of the shape memory alloy compression spring in the low-temperature driving device at -196 to 25°C. By adjusting the screw displacement regulator (3), the force sensor (4) and the quartz glass guide rod ( 51) move downwards so that the lower end surface of the quartz glass guide rod (51) is in contact with the upper end surface of the sample guide rod (66); and drive the sample guide rod (66) to move downward while compressing the compression spring (7), The elastic properties of the compression spring are thus measured. The test device of the present invention can provide that the displacement of compression springs of different materials is constant at a fixed value. By adjusting the heating current, the temperature of the working chamber can be continuously raised from low temperature to high temperature, or continuously lowered from high temperature to low temperature, and the elastic force of the compression spring can be obtained. Continuous variation with temperature.

Figure 200710120292

Description

The low temperature elasticity performance test device of compression spring
Technical field
The present invention relates to a kind of device that the elastic performance of compression spring is tested, more particularly say, be meant a kind of device of under low temperature-196～25 ℃ environment, the elastic performance of compression spring being tested.
Background technology
Along with science and technology development, the application of low temperature drive unit is more and more wider, and small-sized shape memory alloy spring is the main element of low temperature drive unit, because shape memory alloy spring is by temperature-driven, be the essential condition of design and use driving device made of shape-memory alloy to the accurate mensuration of different temperatures lower spring coefficient.
At present, spring tester mainly is to test at the spring that general material is made, and shape memory alloy spring is worked under different temperatures, measures for the spring constant of the shape memory alloy spring in the low temperature drive unit, need test at a low temperature environment.
Summary of the invention
The low temperature elasticity performance test device that the purpose of this invention is to provide a kind of compression spring, this proving installation provides the test environment of low temperature by the liquid nitrogen storage chamber, can measure the displacement and the elastic force of compression spring by the combination of displacement governor and force transducer, be heated to be the environment that the operating room provides steady temperature to heating member by power supply.
The present invention is a kind of low temperature elasticity performance test device of compression spring, include low-voltage dc power supply, temperature controller, liquid nitrogen, testing tool, this testing tool is made up of cold-trap assembly, bracket component, displacement transducer, force transducer, guide rod assembly, specimen holder; Described low-voltage dc power supply output 36V, 3A.
The cold-trap assembly includes liquid nitrogen storage chamber, operating room, A heating member, web member, flange, flange is provided with liquid nitrogen inlet, vacuum valve, power interface, guide rod access port, the guide rod access port is threaded with web member, in the central through hole of web member metal sleeve is installed, the lower end of flange is connected with the liquid nitrogen storage chamber, the bottom of liquid nitrogen storage chamber is connected with the operating room, and the bottom of operating room is equipped with the A heating member;
The C crossbeam is installed on the base of bracket component, parallel A pillar, the B pillar of being equipped with in the two ends of C crossbeam, A crossbeam, B-crossrail are installed in parallel on A pillar, the B pillar, on the upper surface of B-crossrail displacement governor is installed, between the upper surface of the lower surface of B-crossrail and A crossbeam force transducer is installed, between the upper surface of the lower surface of A crossbeam and C crossbeam the cold-trap assembly is installed;
The guide rod assembly includes quartz glass guide rod, metal sleeve, heat insulation plug, and described heat insulation plug is taper, and its top is cylindrical section, and the bottom is a conical section; One end of quartz glass guide rod passes metal sleeve and contacts with the upper surface of sample guide rod, and the other end of quartz glass guide rod is connected with force transducer; The upper end of metal sleeve is connected with the A crossbeam, and heat insulation plug is passed in the lower end of metal sleeve, the B heating member is connected with the upper surface of D crossbeam;
The C pillar of specimen holder and D pillar are installed in parallel on the lower surface of D crossbeam, on the C pillar thermopair are installed, and thermopair is used for the measurement to the work indoor environment temperature; Through hole and quartz glass guide rod one end in contact on the D crossbeam passed in the upper end of sample guide rod, and the through hole on the E crossbeam is passed in the lower end of sample guide rod, and sample guide rod and C pillar, D pillar are parallel, are socketed with the tested sample spring on the sample guide rod; The E crossbeam is installed on C pillar, the D pillar by screw.
The advantage of the low temperature elasticity performance test device of compression spring of the present invention is: (1) provides a stationary temperature environment-196～25 ℃ by liquid nitrogen, heating member for the compression spring test; (2) turn screw displacement regulator, drive sensor and quartz glass guide rod move downward, compress compression spring when the sample guide rod is moved downward,, record the elastic force of compression spring by force transducer by the displacement that the screw displacement regulator records compression spring; (3) can provide the displacement of compression spring constant in a fixed value, by regulating heating current, the temperature of operating room is heated up to high temperature continuously from low temperature, perhaps lower the temperature continuously to low temperature from high temperature, the elastic force that can obtain compression spring concerns with the temperature continually varying.
Description of drawings
Fig. 1 is the external structure of the low temperature elasticity performance test device of compression spring of the present invention.
Fig. 2 is the structural drawing of cold-trap assembly of the present invention.
Fig. 2 A is the A-A view of Fig. 2.
Fig. 3 is the wiring layout of guide rod assembly of the present invention and specimen holder.
Fig. 4 is Ti 50Ni 47Fe 3The marmem compression spring is at the graph of a relation of different temperatures down spring and displacement.
Figure S is Ti 50Ni 47Fe 3The marmem compression spring is at the graph of a relation of constant displacement condition down spring and temperature.
Among the figure: 1. cold-trap assembly 11. liquid nitrogen storage chambers 12. 13.A of operating room heating members
102. vacuum valves, 103. power interfaces 14. web member 15. flanges 101. liquid nitrogen enter the mouth
104. guide rod access port 105. cold-trap shells 106. cold-trap inner casings 107. vacuum chambers
2. bracket component 201.A pillar 202.B pillar 203.A crossbeam 204.B crossbeam
205.C crossbeam 206. bases 3. displacement governors 4. force transducers
5. guide rod assembly 51. quartz glass conduits 52. metal sleeves 53. heat insulation plugs
501. cylindrical section 502. conical section 54.B heating members
6. specimen holder 61.D crossbeam 62.E crossbeam 63.C pillar 64.D pillar
65. thermopair 66. sample guide rods 7. springs
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing.
The present invention is a kind of low temperature elasticity performance test device of compression spring, this proving installation (is used to show the working temperature in the operating room 12 by low-voltage dc power supply, testing tool, temperature controller, working temperature records by thermopair 65, sky, the Kunlun, Beijing occasion instrument Science and Technology Ltd. produces, XS/A-1 type temperature controller), liquid nitrogen is formed, described low-voltage dc power supply output 36V, 3A; Described testing tool is made up of cold-trap assembly 1, bracket component 2, displacement transducer 3, force transducer 4, guide rod assembly 5, specimen holder 6.
In the present invention, on the base 206 of bracket component 2 C crossbeam 205 is installed, parallel A pillar 201, the B pillar 202 of being equipped with in the two ends of C crossbeam 205, A crossbeam 203, B-crossrail 204 are installed in parallel on A pillar 201, the B pillar 202, displacement governor 3 is installed on the upper surface of B-crossrail 204, force transducer 4 is installed between the upper surface of the lower surface of B-crossrail 204 and A crossbeam 203, the mobile terminal of displacement governor 3 is connected by a threaded connector with the stiff end of force transducer 4, between the upper surface of the lower surface of A crossbeam 203 and C crossbeam 205 cold-trap assembly 1 is installed.
In the present invention, cold-trap assembly 1 includes liquid nitrogen storage chamber 11, operating room 12, A heating member 13, web member 14, flange 15, flange 15 is provided with liquid nitrogen inlet 101, and (liquid nitrogen inlet 101 is connected with liquid nitrogen, realization flows into liquid nitrogen in the liquid nitrogen storage chamber 11), (vacuum valve 102 is connected with vacuum pump vacuum valve 102, realization vacuumizes vacuum chamber 107), power interface 103 (power interface 103 is connected with low-voltage dc power supply), guide rod access port 104, guide rod access port 104 is threaded with web member 14, metal sleeve 52 is installed in the central through hole of web member 14, the lower end of flange 15 is connected with liquid nitrogen storage chamber 11, the bottom of liquid nitrogen storage chamber 11 is connected with operating room 12, and the bottom of operating room 12 is equipped with A heating member 13.
In the present invention, guide rod assembly 5 includes quartz glass guide rod 51, metal sleeve 52, heat insulation plug 53, described heat insulation plug 53 is taper, its top is that (structural design of this cylindrical section 501 plays and isolates the heat of being transmitted by metal sleeve 52 in the liquid nitrogen storage chamber 11 cylindrical section 501, make the temperature in the liquid nitrogen storage chamber 11 influenced), the bottom is a conical section 502; One end of quartz glass guide rod 51 passes metal sleeve 52 and contacts with the upper surface of sample guide rod 66, and the other end of quartz glass guide rod 51 is connected with force transducer 4; The upper end of metal sleeve 52 is connected with A crossbeam 203, and heat insulation plug 53 is passed in the lower end of metal sleeve 52, B heating member 54 is connected with the upper surface of D crossbeam 61.
In the present invention, the C pillar 63 and the D pillar 64 of specimen holder 6 are installed in parallel on the lower surface of D crossbeam 61, thermopair 65 is installed on the C pillar 63, and (thermopair 65 also can be installed on the D pillar 64, the link of thermopair 65 is connected with temperature controller), thermopair 65 is used for the measurement to environment temperature in the operating room 12; Through hole and quartz glass guide rod 51 1 end in contact on the D crossbeam 61 are passed in the upper end of sample guide rod 66, the through hole on the E crossbeam 62 is passed in the lower end of sample guide rod 66, and sample guide rod 66 and C pillar 63, D pillar 64 are parallel, are socketed with tested sample spring 7 on the sample guide rod 66; E crossbeam 62 is installed on C pillar 63, the D pillar 64 by screw.
When compression spring 7 was carried out elasticity performance test, its testing procedure was as follows:
(A) lower end of compression spring 7 to be measured from sample guide rod 66 put, then E crossbeam 62 is sleeved on the C pillar 63, D pillar 64, sample guide rod 66 of specimen holder 6, and E crossbeam 62 is fixed on C pillar 63, the D pillar 64 by screw;
(B) web member 14 and guide rod access port 104 are assembled;
(C) use vacuum pump (vacuum pump is connected with vacuum valve 102) to vacuum chamber 107 suctions to 1 * 10 -1～5 * 10 -1Pa;
(D) from liquid nitrogen inlet 101 liquid nitrogen is added to the liquid nitrogen storage chamber 11, liquid nitrogen will be from the conical section 502 of liquid nitrogen storage chamber 11 to operating room's 12 infiltrations;
(E) then power-on (power interface 103 is connected with low-voltage dc power supply, low-voltage dc power supply output 36V, 3A) give A heating member 13, B heating member 54 loading currents, control the size of heating current well, make a certain temperature of temperature constant in 196～25 ℃ of scopes;
(F) adjustable screw displacement governor 3 (the 5-30mm internal measuring micrometer of selecting for use Jiangxi Tool Co., Ltd. to produce), (thereby Academy Of Aerospace Aerodynamics produces drive sensor 4, BK-3 type sensor) and quartz glass guide rod 51 move down, quartz glass guide rod 51 lower surfaces are contacted with sample guide rod 66 upper surfaces; And drive and to compress compression spring 7 when sample guide rod 66 moves downward; By the displacement that screw displacement regulator 3 records compression spring 7, record the elastic force of compression spring 7 by force transducer 4.
The low temperature elasticity performance test device of compression spring of the present invention, also can make the displacement of compression spring 7 constant in a certain fixed value, by regulating heating current, the temperature of operating room 12 is heated up to high temperature continuously from low temperature, perhaps lower the temperature continuously to low temperature from high temperature, the elastic force that can obtain compression spring concerns with the temperature continually varying.
Embodiment 1:
Compression spring is chosen Ti 50Ni 47Fe 3Marmem, wherein Ti 50Ni 47Fe 3The external diameter 3.0mm of marmem compression spring, Ti 50Ni 47Fe 3The silk footpath 0.55mm of marmem compression spring, number of active coils is 9 circles.The volume of liquid nitrogen storage chamber 11 is 3 liters.
Adopt low temperature elasticity performance test device of the present invention, its testing procedure is as follows:
(A) with Ti 50Ni 47Fe 3The marmem compression spring puts from the lower end of sample guide rod 66, then E crossbeam 62 is sleeved on the C pillar 63, D pillar 64, sample guide rod 66 of specimen holder 6, and by screw E crossbeam 62 is fixed on C pillar 63, the D pillar 64;
(B) web member 14 and guide rod access port 104 are assembled;
(C) use vacuum pump (Huangyan, Zhejiang refinement vacuum pump factory makes, 2XZ-1 type sliding vane rotary vacuum pump) to vacuum chamber 107 suctions to 5 * 10 -1Pa;
(D) from liquid nitrogen inlet 101 liquid nitrogen is added to the liquid nitrogen storage chamber 11,2 liters of the consumptions of liquid nitrogen, liquid nitrogen will be from the conical section 502 of liquid nitrogen storage chamber 11 to operating room's 12 infiltrations;
(E) power-on is then given A heating member 13, B heating member 54 loading currents, regulates electric current 36V, 3A, and 10 ℃/min of heating rate makes the working temperature of operating room 12 constant in-173 ℃ ,-123 ℃ ,-73 ℃ ,-16 ℃, 0 ℃, 25 ℃; Record the working temperature of operating room 12 by temperature controller (sky, the Kunlun, Beijing occasion instrument Science and Technology Ltd. produces, XS/A-1 type temperature controller), record the elastic force under different temperatures of compression spring 7 by force transducer 4;
(F) the adjustable screw displacement governor 3, thereby drive sensor 4 (Academy Of Aerospace Aerodynamics produces, BK-3 type sensor) and quartz glass guide rod 51 move down, and quartz glass guide rod 51 lower surfaces are contacted with sample guide rod 66 upper surfaces; And drive and to compress compression spring 7 when sample guide rod 66 moves downward; So, record the elastic force (referring to shown in Figure 4) of compression spring 7 by force transducer 4 by the displacement that screw displacement regulator 3 records compression spring 7.
Table one: Ti under the different temperatures 50Ni 47Fe 3The elastic force of marmem compression spring and displacement
Displacement (mm) Elastic force (kgf)
-173℃ -123℃ -73℃ -16℃ 0℃ 25℃
0.5 0.002 0.026 0.065 0.129 0.263 0.251
0.65 0.037 0.093 0.153 0.236 0.384 0.375
0.9 0.038 0.103 0.190 0.310 0.480 0.510
1.05 0.109 0.182 0.266 0.377 0.548 0.588
1.2 0.228 0.274 0.337 0.433 0.588 0.641
1.4 0.291 0.341 0.439 0.580 0.722 0.804
1.7 0.345 0.419 0.524 0.693 0.841 0.934
Conclusion: by present embodiment as can be seen, the elastic force when measuring different displacement under the steady temperature, the line shape of going forward side by side returns, and can obtain the variation relation curve of the elastic force of steady temperature lower compression spring 7 with displacement.
Embodiment 2:
Compression spring is chosen Ti 50Ni 47Fe 3Marmem, wherein Ti 50Ni 47Fe 3The external diameter 3.0mm of marmem compression spring, Ti 50Ni 47Fe 3The silk footpath 0.55mm of marmem compression spring, number of active coils is 9 circles.The volume of liquid nitrogen storage chamber 11 is 3 liters.
Adopt low temperature elasticity performance test device of the present invention, its testing procedure is as follows:
(A), (B), (C) are identical with the step of embodiment 1 with (D) step;
(E) the adjustable screw displacement governor 3, thereby drive sensor 4 and quartz glass guide rod 51 move down, and quartz glass guide rod 51 lower surfaces are contacted with sample guide rod 66 upper surfaces; And drive and to compress compression spring 7 when sample guide rod 66 moves downward; Displacement by adjustable screw displacement governor 3 compression springs 7 is respectively 0.45mm, 0.65mm, 1mm;
(F) power-on then, give A heating member 13, B heating member 54 loading currents, constantly regulate electric current 36V, 3A, make the working temperature of operating room 12 lower the temperature continuously from 25 ℃ to-196 ℃, record the working temperature of operating room 12 by temperature controller (sky, the Kunlun, Beijing occasion instrument Science and Technology Ltd. produces, XS/A-1 type temperature controller), record the elastic force under different temperatures (referring to shown in Figure 5) of compression spring 7 by force transducer 4.Elastic force was with the variation of temperature curve when displacement of marmem compression spring was respectively 0.45mm, 0.65m and 1mm among the figure; Simultaneously can obtain shape memory alloy spring and the R phase transformation only take place, no martensite phase transformation in temperature-fall period; The R starting temperature of transformation is-8 ℃, R phase transformation end temp-19 ℃.
Embodiment 3:
Compression spring is chosen the 1Cr18Ni9 stainless steel, the external diameter 3.0mm of 1Cr18Ni9 stainless steel compression spring wherein, and the silk footpath 0.55mm of 1Cr18Ni9 stainless steel compression spring, number of active coils is 9 circles.The volume of liquid nitrogen storage chamber 11 is 3 liters.
Adopt low temperature elasticity performance test device of the present invention, its testing procedure is as follows:
(A) lower end of 1Cr18Ni9 stainless steel compression spring from sample guide rod 66 put, then E crossbeam 62 is sleeved on the C pillar 63, D pillar 64, sample guide rod 66 of specimen holder 6, and E crossbeam 62 is fixed on C pillar 63, the D pillar 64 by screw;
(B) web member 14 and guide rod access port 104 are assembled;
(C) use vacuum pump (Huangyan, Zhejiang refinement vacuum pump factory makes, 2XZ-1 type sliding vane rotary vacuum pump) to vacuum chamber 107 suctions to 3 * 10 -1Pa;
(D) from liquid nitrogen inlet 101 liquid nitrogen is added to the liquid nitrogen storage chamber 11,2 liters of the consumptions of liquid nitrogen, liquid nitrogen will be from the conical section 502 of liquid nitrogen storage chamber 11 to operating room's 12 infiltrations;
(E) power-on is then given A heating member 13, B heating member 54 loading currents, regulates electric current 36V, and 3A makes the working temperature of operating room 12 constant in-173 ℃, 25 ℃;
(F) the adjustable screw displacement governor 3, thereby drive sensor 4 and quartz glass guide rod 51 move down, and quartz glass guide rod 51 lower surfaces are contacted with sample guide rod 66 upper surfaces; And drive and to compress compression spring 7 when sample guide rod 66 moves downward; So, record the elastic force of compression spring 7 by force transducer 4 by the displacement that screw displacement regulator 3 records compression spring 7.
Table two: the elastic force and the displacement of 1Cr18Ni9 stainless steel compression spring under the different temperatures
Displacement (mm) 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8
Elastic force in the time of 25 ℃ 0.084 0.175 0.265 0.358 0.456 0.548 0.643 0.743 0.839
Elastic force in the time of-173 ℃ 0.085 0.186 0.285 0.392 0.495 0.603 0.705 0.809 0.914

Claims (5)

1.一种压缩弹簧的低温弹性性能测试装置，包括有低压直流电源、控温仪、液氮，其特征在于：还包括有测试仪器，该测试仪器由冷阱组件(1)、支架组件(2)、位移传感器(3)、力传感器(4)、导杆组件(5)、试样夹具(6)组成；所述低压直流电源输出36V，3A；1. a low-temperature elastic performance testing device of a compression spring, comprising a low-voltage DC power supply, a temperature controller, and liquid nitrogen, is characterized in that: a test instrument is also included, and the test instrument consists of a cold trap assembly (1), a support assembly ( 2), a displacement sensor (3), a force sensor (4), a guide rod assembly (5), and a sample holder (6); the low-voltage DC power supply outputs 36V, 3A; 冷阱组件(1)包括有液氮存放室(11)、工作室(12)、A加热件(13)、连接件(14)、法兰(15)，法兰(15)上设有液氮入口(101)、真空阀(102)、电源接口(103)、导杆接入口(104)，导杆接入口(104)与连接件(14)螺纹连接，连接件(14)的中心通孔内安装有金属套管(52)，法兰(15)的下端连接有液氮存放室(11)，液氮存放室(11)的底部连接有工作室(12)，工作室(12)的底部安装有A加热件(13)；The cold trap assembly (1) includes a liquid nitrogen storage chamber (11), a working chamber (12), a heating element (13), a connecting piece (14), a flange (15), and the flange (15) is provided with a liquid Nitrogen inlet (101), vacuum valve (102), power supply interface (103), guide rod inlet (104), guide rod inlet (104) is threadedly connected with the connecting piece (14), and the central connection of the connecting piece (14) A metal sleeve (52) is installed in the hole, and the lower end of the flange (15) is connected with a liquid nitrogen storage chamber (11), and the bottom of the liquid nitrogen storage chamber (11) is connected with a working chamber (12), and the working chamber (12) A heating element (13) is installed at the bottom; 支架组件(2)的底座(206)上安装有C横梁(205)，C横梁(205)的两端平行安装有A支柱(201)、B支柱(202)，A横梁(203)、B横梁(204)平行安装在A支柱(201)、B支柱(202)上，B横梁(204)的上端面上安装有位移调节器(3)，B横梁(204)的下端面与A横梁(203)的上端面之间安装有力传感器(4)，A横梁(203)的下端面与C横梁(205)的上端面之间安装有冷阱组件(1)；C crossbeam (205) is installed on the base (206) of bracket assembly (2), and the two ends of C crossbeam (205) are installed with A pillar (201), B pillar (202) in parallel, A crossbeam (203), B crossbeam (204) are installed in parallel on the A pillar (201), the B pillar (202), the displacement regulator (3) is installed on the upper end face of the B crossbeam (204), and the lower end face of the B crossbeam (204) and the A crossbeam (203) A force sensor (4) is installed between the upper end faces of ), and a cold trap assembly (1) is installed between the lower end face of the A beam (203) and the upper end face of the C beam (205); 导杆组件(5)包括有石英玻璃导杆(51)、金属套管(52)、隔热塞(53)，所述隔热塞(53)为锥形，其上部为圆柱段(501)，下部为锥形段(502)；石英玻璃导杆(51)的一端穿过金属套管(52)与试样导杆(66)的上端面接触，石英玻璃导杆(51)的另一端与力传感器(4)连接；金属套管(52)的上端与A横梁(203)连接，金属套管(52)的下端穿过隔热塞(53)、B加热件(54)与D横梁(61)的上端面连接；The guide rod assembly (5) includes a quartz glass guide rod (51), a metal sleeve (52), and a thermal insulation plug (53). The thermal insulation plug (53) is conical, and its upper part is a cylindrical section (501) , the lower part is a tapered section (502); one end of the quartz glass guide rod (51) passes through the metal sleeve (52) and contacts the upper end surface of the sample guide rod (66), and the other end of the quartz glass guide rod (51) Connect with the force sensor (4); the upper end of the metal sleeve (52) is connected with the beam A (203), and the lower end of the metal sleeve (52) passes through the insulation plug (53), the heating element B (54) and the beam D (61) is connected on the upper surface; 试样夹具(6)的C支柱(63)与D支柱(64)平行安装在D横梁(61)的下端面上，C支柱(63)上安装有热电偶(65)，热电偶(65)用于对工作室(12)内环境温度的测量；试样导杆(66)的上端穿过D横梁(61)上的通孔与石英玻璃导杆(51)一端接触，试样导杆(66)的下端穿过E横梁(62)上的通孔，且试样导杆(66)与C支柱(63)、D支柱(64)平行，试样导杆(66)上套接有被测试样弹簧(7)；E横梁(62)通过螺钉安装在C支柱(63)、D支柱(64)上。The C pillar (63) and the D pillar (64) of the sample fixture (6) are installed on the lower end face of the D beam (61) in parallel, and the thermocouple (65) is installed on the C pillar (63), and the thermocouple (65) Used to measure the ambient temperature in the working room (12); the upper end of the sample guide rod (66) passes through the through hole on the D beam (61) to contact with one end of the quartz glass guide rod (51), and the sample guide rod ( The lower end of 66) passes through the through hole on the E beam (62), and the sample guide rod (66) is parallel to the C pillar (63) and the D pillar (64), and the sample guide rod (66) is sleeved with a Test sample spring (7); E beam (62) is installed on C pillar (63), D pillar (64) by screw. 2.根据权利要求1所述的压缩弹簧的低温弹性性能测试装置，其特征在于：真空腔(107)抽真空度至1×10-1～5×10-1Pa。2. The device for testing the low-temperature elastic properties of compression springs according to claim 1, characterized in that: the vacuum chamber (107) is vacuumed to a degree of 1×10 -1 ~5×10 -1 Pa. 3.根据权利要求1所述的压缩弹簧的低温弹性性能测试装置，其特征在于：工作室(12)的工作温度范围为-196～25℃。3. The device for testing the low-temperature elastic properties of compression springs according to claim 1, characterized in that: the operating temperature range of the working chamber (12) is -196-25°C. 4.根据权利要求1所述的压缩弹簧的低温弹性性能测试装置，其特征在于：螺旋位移调节器(3)采用5～30mm内测千分尺。4. The device for testing the low-temperature elastic properties of compression springs according to claim 1, characterized in that: the screw displacement regulator (3) adopts a 5-30mm internal measuring micrometer. 5.根据权利要求1所述的压缩弹簧的低温弹性性能测试装置，其特征在于：力传感器(4)采用BK-3型传感器。5. The device for testing the low-temperature elastic properties of the compression spring according to claim 1, characterized in that: the force sensor (4) adopts a BK-3 type sensor.
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