CN107238456B - Clamping force test tool for isolating switch - Google Patents
Clamping force test tool for isolating switch Download PDFInfo
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- CN107238456B CN107238456B CN201710348035.8A CN201710348035A CN107238456B CN 107238456 B CN107238456 B CN 107238456B CN 201710348035 A CN201710348035 A CN 201710348035A CN 107238456 B CN107238456 B CN 107238456B
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- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
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Abstract
本发明提供了一种隔离开关用夹紧力测试工装,包括横截面均呈弓形的第一挤压部和第二挤压部,两个挤压部的弓弦部分相对设置、之间设有压力传感器,压力传感器的第一受力面上设置有螺纹接头、第二受力面上设置有螺纹孔,压力传感器和第二挤压部通过紧固件固定相连,第二挤压部上设置有旋转结构,可使紧固件在压力传感器与第一挤压部连接后通过旋转与螺纹孔对应。本发明的有益效果在于:当压力传感器与第一挤压部连接后,紧固件可以在旋转结构内通过旋转与压力传感器上螺纹孔对应上,实现第二挤压部与压力传感器的连接。旋转结构的设置削弱了压力传感器的旋进角度对于利用紧固件固定第二挤压部的影响,保证了测试工装的装配精度,减小了测量误差。
The invention provides a clamping force test tool for a disconnector, which comprises a first extruding part and a second extruding part both of which are bow-shaped in cross section, and the bowstring parts of the two extruding parts are arranged oppositely, and a pressure is arranged between them. A sensor, a threaded joint is provided on the first force-bearing surface of the pressure sensor, a threaded hole is provided on the second force-bearing surface, the pressure sensor and the second extrusion part are fixedly connected by fasteners, and the second extrusion part is provided with The rotation structure enables the fastener to correspond to the threaded hole through rotation after the pressure sensor is connected to the first extrusion part. The beneficial effect of the present invention is that: after the pressure sensor is connected with the first extruding part, the fastener can be rotated in the rotating structure to correspond to the threaded hole on the pressure sensor to realize the connection between the second extruding part and the pressure sensor. The arrangement of the rotating structure weakens the influence of the precession angle of the pressure sensor on fixing the second extruded part by the fastener, ensures the assembly accuracy of the test tooling, and reduces the measurement error.
Description
技术领域technical field
本发明涉及一种隔离开关用夹紧力测试工装。The invention relates to a clamping force testing tool for an isolating switch.
背景技术Background technique
目前的高压交流隔离开关产品,如剪刀式隔离开关、钳夹式隔离开关等在装配完成后进行出厂试验时,均需要对其动、静触头之间的夹紧力进行测量,这时就需要一种能够模拟静触头外形的夹紧力测量装置。授权公告号为CN103217245B,授权公告日为2016.03.09的中国发明专利公开了一种隔离开关用夹紧力测量装置,该装置包括横截面均呈弓形的第一挤压部和第二挤压部,两个挤压部的弓弦部分相对设置、之间设有压力传感器,压力传感器的两个受力面分别与第一挤压部和第二挤压部固定连接,具体是压力传感器的一个受力面上自带有螺纹接头、另一个受力面上自带有三个圆周均布的螺纹孔,装配时首先利用螺纹接头将压力传感器固定在第一挤压部上,然后利用螺钉将第二挤压部固定在压力传感器上,为此第一挤压部上设置有与螺纹接头对应的固定孔,第二挤压部上设置有三个与压力传感器上螺纹孔对应的螺钉穿孔。The current high-voltage AC isolating switch products, such as scissor-type isolating switch, clamp-type isolating switch, etc., need to measure the clamping force between the dynamic and static contacts when the factory test is completed after assembly. A clamping force measurement device capable of simulating the shape of a static contact is needed. The Chinese invention patent with the authorized announcement number CN103217245B and the authorized announcement date of 2016.03.09 discloses a clamping force measuring device for disconnectors. The device includes a first extrusion part and a second extrusion part with bow-shaped cross sections. , the bowstring parts of the two extruding parts are oppositely arranged, and a pressure sensor is arranged between them, and the two force-bearing surfaces of the pressure sensor are respectively fixedly connected with the first extruding part and the second extruding part, specifically, one of the pressure sensors is subjected to There is a threaded joint on the force surface, and three threaded holes uniformly distributed on the other force surface. When assembling, first use the threaded joint to fix the pressure sensor on the first extrusion part, and then use the screw to fix the second pressure sensor. The extruding part is fixed on the pressure sensor. For this reason, the first extruding part is provided with a fixing hole corresponding to the threaded joint, and the second extruding part is provided with three screw holes corresponding to the threaded holes on the pressure sensor.
装配完成后,第一挤压部和第二挤压部的外周面构成一个圆周,这样便模拟了静触头的外形,当两侧动触头向两挤压部施加压力时便类似于真实情况下的动触头挤压静触头,从而完成夹紧力的测量。使用中发现,由于需要先安装压力传感器,压力传感器安装完成后,其上的三个螺纹孔必须与第二挤压部上的螺钉穿孔对应,才能将第二挤压部固定在压力传感器上,否则孔一旦错开,将无法固定第二挤压部。同时,压力传感器旋入第一挤压部中的深度将会影响装配完成后第一挤压部和第二挤压部构成的圆周的圆柱度,压力传感器旋入深度过大或过小都将无法模拟最真实的静触头外形。After the assembly is completed, the outer peripheral surfaces of the first extruded part and the second extruded part form a circle, which simulates the shape of the static contact. When the moving contacts on both sides apply pressure to the two extruded parts, it is similar to the real one. The moving contact in the case squeezes the static contact to complete the measurement of the clamping force. During use, it was found that since the pressure sensor needs to be installed first, after the pressure sensor is installed, the three threaded holes on it must correspond to the screw holes on the second extrusion part, so that the second extrusion part can be fixed on the pressure sensor. Otherwise, once the holes are staggered, the second extrusion part cannot be fixed. At the same time, the depth at which the pressure sensor is screwed into the first extruded part will affect the cylindricity of the circumference formed by the first extruded part and the second extruded part after assembly. The most realistic static contact shape cannot be simulated.
因此,当压力传感器需要满足螺纹孔与第二挤压部上的螺钉穿孔对应时,其每次旋转的角度必须都是120度,实际应用中,所采用的压力传感器的螺纹接头通常是M4的螺纹,螺距为0.7mm,当压力传感器旋转120度时,其旋进的长度是0.7mm的三分之一,为0.23mm,因此压力传感器在旋进的过程中,对上述圆周直径的影响是0.23、0.46、0.7mm,而真实静触头的直径公差一般都在0.05mm之内,远远超过了这个允许公差,因此由第一挤压部和第二挤压部所组成的圆周直径是无法精确控制的,那么由该测量装置所测得夹紧力并不是最真实的,存在着较大的测量误差。Therefore, when the pressure sensor needs to meet the threaded hole corresponding to the screw hole on the second extrusion part, the angle of each rotation must be 120 degrees. In practical applications, the threaded joint of the pressure sensor used is usually M4 The thread has a pitch of 0.7mm. When the pressure sensor rotates 120 degrees, its screw-in length is one-third of 0.7mm, which is 0.23mm. Therefore, during the screw-in process of the pressure sensor, the influence on the above-mentioned circumference diameter is 0.23, 0.46, 0.7mm, and the diameter tolerance of the real static contact is generally within 0.05mm, far exceeding this allowable tolerance, so the diameter of the circle formed by the first extrusion part and the second extrusion part is If it cannot be precisely controlled, then the clamping force measured by the measuring device is not the most realistic, and there is a large measurement error.
发明内容Contents of the invention
本发明的目的在于提供一种能够减小测量误差的隔离开关用夹紧力测试工装。The object of the present invention is to provide a clamping force test fixture for a disconnector that can reduce measurement errors.
为了解决上述技术问题,本发明采用如下技术方案:In order to solve the above technical problems, the present invention adopts the following technical solutions:
一种隔离开关用夹紧力测试工装,包括横截面均呈弓形的第一挤压部和第二挤压部,两个挤压部的弓弦部分相对设置、之间设有压力传感器,压力传感器具有第一受力面和第二受力面,第一受力面上设置有用于与第一挤压部固定连接的螺纹接头,第二受力面上设置有用于与第二挤压部固定连接的螺纹孔,压力传感器和第二挤压部通过紧固件固定相连,第二挤压部上设置有用于供紧固件相对于压力传感器中心旋转的旋转结构,该旋转结构可使紧固件在压力传感器与第一挤压部连接后通过旋转与所述螺纹孔对应。A clamping force test tool for an isolating switch, comprising a first extruding part and a second extruding part both of which are bow-shaped in cross section, the bowstring parts of the two extruding parts are arranged oppositely, and a pressure sensor is arranged between them It has a first force-bearing surface and a second force-bearing surface, the first force-bearing surface is provided with a threaded joint for fixed connection with the first extrusion part, and the second force-bearing surface is provided with a threaded joint for fixing with the second extrusion part. The connected threaded hole, the pressure sensor and the second extrusion part are fixedly connected by a fastener, and the second extrusion part is provided with a rotating structure for the fastener to rotate relative to the center of the pressure sensor, and the rotation structure can make fastening After the pressure sensor is connected with the first extruding part, the component corresponds to the threaded hole by rotation.
所述旋转结构为开设在第二挤压部上的弧形长孔,所述紧固件为穿过弧形长孔与螺纹孔配合的螺栓。The rotating structure is an arc-shaped long hole opened on the second extruding part, and the fastener is a bolt that passes through the arc-shaped long hole and cooperates with the threaded hole.
所述紧固件包括紧固块和紧固螺栓,紧固块上开设有用于与所述螺纹孔对应的第一螺栓穿孔,所述旋转结构为开设在第二挤压部上的与传感器同心设置的圆孔,紧固块可旋转的装配在所述圆孔中。The fastener includes a fastening block and a fastening bolt, the fastening block is provided with a first bolt hole corresponding to the threaded hole, and the rotating structure is provided on the second extrusion part concentric with the sensor A circular hole is provided, and the fastening block is rotatably assembled in the circular hole.
所述圆孔为阶梯圆孔,紧固块装配在阶梯圆孔的小孔中,所述紧固件还包括设置在阶梯圆孔的大孔中的用于压紧紧固块的压板,压板上设置有用于与第一螺栓穿孔对应的第二螺栓穿孔。The round hole is a stepped round hole, the fastening block is assembled in the small hole of the stepped round hole, and the fastener also includes a pressing plate arranged in the large hole of the stepped round hole for pressing the fastening block, the pressing plate Second bolt holes corresponding to the first bolt holes are arranged on the top.
第一挤压部上设置有用于与压力传感器的螺纹接头配合的接头固定孔,所述接头固定孔由固定在第一挤压部上的硬质螺纹套的内孔构成。The first extruding part is provided with a joint fixing hole for matching with the threaded joint of the pressure sensor, and the joint fixing hole is formed by an inner hole of a hard threaded sleeve fixed on the first extruding part.
硬质螺纹套的内孔中还固定有用于对螺纹接头进行限位的顶丝。A top screw for limiting the threaded joint is also fixed in the inner hole of the hard threaded sleeve.
隔离开关用夹紧力测试工装还包括穿过第二挤压部固定在第一挤压部上的用于对第二挤压部进行导向和支撑的导向柱。The clamping force test fixture for the disconnector further includes a guide column passing through the second extrusion part and fixed on the first extrusion part for guiding and supporting the second extrusion part.
第二挤压部上设置有导向柱穿孔,该导向柱穿孔为长孔。The second extruding part is provided with a guide column perforation, and the guide column perforation is a long hole.
第一挤压部的两端设置有用于限制第二挤压部沿第一挤压部轴向移动的限位块。Both ends of the first extruding part are provided with limiting blocks for restricting the axial movement of the second extruding part along the first extruding part.
所述限位块上设置有用于将隔离开关用夹紧力测试工装固定在高处的固定结构。The limiting block is provided with a fixing structure for fixing the isolating switch with a clamping force testing tool at a high place.
本发明的有益效果在于:由于第二挤压部上设置有用于供紧固件相对于压力传感器中心旋转的旋转结构,这样当压力传感器与第一挤压部实现连接后,压力传感器上螺纹孔可能会旋转到任意的位置,此时紧固件可以在旋转结构内通过自身相对于压力传感器中心的旋转,使得与压力传感器上螺纹孔对应上,从而实现第二挤压部与压力传感器的连接。旋转结构的设置削弱了压力传感器的旋进角度对于利用紧固件固定第二挤压部的影响,即对于由第一挤压部和第二挤压部所组成的圆周直径的影响,通过合理的设计,可以实现压力传感器在360度范围内无极调节,最终都不影响紧固件固定第二挤压部,从而可以保证测试工装的装配精度,减小测量误差。The beneficial effects of the present invention are: since the second extruding part is provided with a rotating structure for the fastener to rotate relative to the center of the pressure sensor, after the pressure sensor is connected to the first extruding part, the threaded hole on the pressure sensor It may be rotated to any position. At this time, the fastener can rotate itself relative to the center of the pressure sensor in the rotating structure, so that it corresponds to the threaded hole on the pressure sensor, so as to realize the connection between the second extrusion part and the pressure sensor. . The arrangement of the rotating structure weakens the influence of the screw-in angle of the pressure sensor on fixing the second extruded part by fasteners, that is, the influence on the diameter of the circle formed by the first extruded part and the second extruded part, through reasonable The unique design can realize the stepless adjustment of the pressure sensor in the range of 360 degrees, and finally does not affect the fixing of the second extrusion part by the fastener, so as to ensure the assembly accuracy of the test tool and reduce the measurement error.
附图说明Description of drawings
图1为本发明中隔离开关用夹紧力测试工装的实施例1的使用状态图;Fig. 1 is the use state figure of the embodiment 1 of clamping force test frock for isolating switch among the present invention;
图2为图1的俯视剖切图;Fig. 2 is a top cutaway view of Fig. 1;
图3为图2中的局部放大图;Fig. 3 is a partial enlarged view in Fig. 2;
图4为图1的主视图;Fig. 4 is the front view of Fig. 1;
图5为图1的主视剖切图;Fig. 5 is a front cutaway view of Fig. 1;
图6为第一挤压部的立体结构图;Fig. 6 is a three-dimensional structure diagram of the first extruding part;
图7为第一挤压部的主视剖切图;Fig. 7 is a front sectional view of the first extrusion part;
图8为第二挤压部的立体结构图;Fig. 8 is a three-dimensional structure diagram of a second extruding part;
图9为第二挤压部的主视剖切图;Fig. 9 is a front sectional view of the second extrusion part;
图10为导向柱的立体结构图;Fig. 10 is a three-dimensional structure diagram of a guide column;
图11为导向柱的主视图;Fig. 11 is the front view of guide post;
图12为压板的结构图;Fig. 12 is the structural diagram of pressing plate;
图13为紧固块的结构图;Figure 13 is a structural diagram of the fastening block;
图14为压力传感器的结构图;Figure 14 is a structural diagram of the pressure sensor;
图15为图14的右视图;Fig. 15 is the right view of Fig. 14;
图16为硬质螺纹套的立体结构图;Fig. 16 is a three-dimensional structure diagram of a hard threaded sleeve;
图17为硬质螺纹套的主视剖切图;Figure 17 is a cutaway front view of a hard threaded sleeve;
图18为隔离开关用夹紧力测试工装实施例2的俯视剖切图;Fig. 18 is a top cutaway view of Embodiment 2 of the clamping force test tooling for the disconnector;
图19为图18的主视图;Fig. 19 is the front view of Fig. 18;
图20为图19中第二挤压部的结构图。FIG. 20 is a structural diagram of the second extrusion part in FIG. 19 .
图中:1.第一导电杆;2.第二导电杆;3.柱体;31.第一固定孔;32.第一挤压部;33.限位柱体;34.第二固定孔;35.第三固定孔;36.第四固定孔;4.第二挤压部;41.第一穿孔;42.第二穿孔;43.弧形长孔;5.压力传感器;51.传感器信号线;52.螺纹接头;53.螺纹孔;6.导向柱;61.导向支撑段;62.固定段;63.限位台阶;7.硬质螺纹套;71.第五固定孔;72.配合台阶;73.大直径螺纹;8.顶丝;9.紧固块;91.第一螺栓穿孔;10.压板;101.第二螺栓穿孔;11.第一触头;12.第二触头;13.紧固螺栓;14.紧固螺杆;15.固定板;16.螺母。In the figure: 1. The first conductive rod; 2. The second conductive rod; 3. The cylinder; 31. The first fixing hole; 32. The first extrusion part; 33. The limit cylinder; ; 35. The third fixing hole; 36. The fourth fixing hole; 4. The second extrusion part; 41. The first perforation; 42. The second perforation; 43. Arc-shaped long hole; 5. Pressure sensor; 51. Sensor Signal line; 52. threaded joint; 53. threaded hole; 6. guide post; 61. guide support section; 62. fixed section; 63. limit step; 7. hard threaded sleeve; .Matching step; 73. Large diameter thread; 8. Top screw; 9. Fastening block; 91. First bolt perforation; 10. Pressing plate; 101. Second bolt perforation; 11. First contact; 12. Second Contact; 13. fastening bolt; 14. fastening screw; 15. fixed plate; 16. nut.
具体实施方式Detailed ways
隔离开关用夹紧力测试工装的实施例1如图1~图17所示,该测试工装是由一根铝棒经车削加工后再用线切割分割而成,铝棒的硬度和真实静触头的材质紫铜相近,不易损伤动触头,因此可以更好的模拟真实静触头的工作状况,并且价格相对便宜。切割后的铝棒包括柱体3和横截面呈弓形的第二挤压部4,柱体3包括横截面呈弓形的第一挤压部32以及位于第一挤压部32两端的圆柱体(即限位柱体33)。第一挤压部32和第二挤压部4的弓弦部分相对设置、之间设有压力传感器5,压力传感器5具有第一受力面和第二受力面,第一受力面上自带有用于与第一挤压部32固定连接的螺纹接头52,第二受力面上自带有用于与第二挤压部4固定连接的螺纹孔53,螺纹孔53有三个并绕压力传感器5的中心圆周均布。Example 1 of the clamping force test tool for disconnectors is shown in Figures 1 to 17. The test tool is made of an aluminum rod that is turned and then cut by wire cutting. The hardness of the aluminum rod and the real static contact The material of the head is similar to copper, and it is not easy to damage the moving contact, so it can better simulate the working conditions of the real static contact, and the price is relatively cheap. The cut aluminum bar includes a column body 3 and a second extruded portion 4 with an arcuate cross section, and the column body 3 includes a first extruded portion 32 with an arcuate cross section and cylinders located at both ends of the first extruded portion 32 ( That is, the limiting cylinder 33). The bowstring parts of the first extruding part 32 and the second extruding part 4 are arranged oppositely, and a pressure sensor 5 is arranged between them. The pressure sensor 5 has a first force-bearing surface and a second force-bearing surface, and the first force-bearing surface It has a threaded joint 52 for fixed connection with the first extrusion part 32, and a threaded hole 53 for fixed connection with the second extrusion part 4 on the second force bearing surface. The threaded hole 53 has three parallel pressure sensors The central circumference of 5 is evenly distributed.
第一挤压部32上设置有用于与压力传感器5的螺纹接头52配合的接头固定孔,由于柱体3的材质为铝,而螺纹接头52是一个M4的螺纹,其螺距是0.7mm、螺纹牙高为0.35mm,在受力情况下,容易损坏铝棒上的螺纹孔,也容易损伤压力传感器上的螺纹,造成测试工装失效。为了避免这种情况,在第一挤压部32上先固定一个硬质螺纹套7,为此第一挤压部32上开设有用于安装硬质螺纹套7的第三固定孔35,硬质螺纹套7的内孔即第五固定孔71构成与螺纹接头52配合的接头固定孔,硬质螺纹套7采用强度和硬度较高的材料制成,其螺纹强度高,不易损坏,其外侧采用大直径螺纹73与第一挤压部32连接,并且设计有一个较大的配合台阶72承担正压力。The first extrusion part 32 is provided with a joint fixing hole for cooperating with the threaded joint 52 of the pressure sensor 5. Since the material of the column body 3 is aluminum, the threaded joint 52 is an M4 thread with a pitch of 0.7mm. The tooth height is 0.35mm. Under the condition of force, it is easy to damage the threaded hole on the aluminum rod, and it is also easy to damage the thread on the pressure sensor, resulting in the failure of the test tooling. In order to avoid this situation, a hard threaded sleeve 7 is first fixed on the first extruded part 32, for this reason the first extruded part 32 is provided with a third fixing hole 35 for installing the hard threaded sleeve 7. The inner hole of the threaded sleeve 7, that is, the fifth fixing hole 71, forms a joint fixing hole matched with the threaded joint 52. The hard threaded sleeve 7 is made of a material with high strength and hardness. The thread strength is high and is not easily damaged. The large-diameter screw thread 73 is connected with the first extruding part 32, and a larger matching step 72 is designed to bear the positive pressure.
将压力传感器5的螺纹接头52旋进第五固定孔71中,在旋进的过程中,不断测量由第一挤压部32和第二挤压部4所组成的圆周的直径,当公差在0.05mm范围内时,说明压力传感器5已经安装到位,此时在第五固定孔71的另外一端安装一个用于对螺纹接头52进行限位的顶丝8,从而限定螺纹接头52的旋入深度,并使得螺纹处无间隙,避免螺纹接头52晃动,保证测量精度,延长使用寿命。Screw the threaded joint 52 of the pressure sensor 5 into the fifth fixing hole 71. During the screwing process, the diameter of the circle formed by the first extruded part 32 and the second extruded part 4 is continuously measured. When the tolerance is within When within the range of 0.05mm, it means that the pressure sensor 5 has been installed in place. At this time, a jacking screw 8 for limiting the threaded joint 52 is installed at the other end of the fifth fixing hole 71, thereby limiting the screw-in depth of the threaded joint 52 , and make there is no gap at the thread, avoiding the shaking of the threaded joint 52, ensuring the measurement accuracy and prolonging the service life.
压力传感器5安装好以后,通过紧固件将第二挤压部4安装到压力传感器5上。该紧固件包括紧固块9、压板10和紧固螺栓13,第二挤压部4上设置有用于装配紧固件的第一穿孔41,该第一穿孔41为阶梯圆孔,紧固块9装配在阶梯圆孔的小孔中,压板10装配在阶梯圆孔的大孔中,压板10压紧在紧固块9以及阶梯圆孔的的台阶面上。紧固块9和压板10与压力传感器5为同轴设置,紧固块9上开设有三个与螺纹孔53位置对应的第一螺栓穿孔91,压板10上开设有三个与第一螺栓穿孔91位置对应的第二螺栓穿孔101,压力传感器5的位置确定以后,通过旋转紧固块9和压板10,即可将第一螺栓穿孔91和第二螺栓穿孔101与压力传感器的螺纹孔53对应,然后利用紧固螺栓13就能完成第二挤压部4与压力传感器的固定。因此第一穿孔41也即是设置在第二挤压部上的用于供紧固件相对于传感器中心旋转的旋转结构,通过该旋转结构就可以使紧固件自由的旋转,因此不管压力传感器上的螺纹孔53旋转到什么位置,紧固件通过自身旋转都可以与其对应。After the pressure sensor 5 is installed, the second extruding part 4 is installed on the pressure sensor 5 through fasteners. The fastener includes a fastening block 9, a pressure plate 10 and a fastening bolt 13, and the second extruding part 4 is provided with a first perforation 41 for assembling the fastener, the first perforation 41 is a stepped circular hole, and the fastening The block 9 is assembled in the small hole of the stepped circular hole, the pressing plate 10 is assembled in the large hole of the stepped circular hole, and the pressing plate 10 is pressed on the step surface of the fastening block 9 and the stepped circular hole. The fastening block 9 and the pressure plate 10 are arranged coaxially with the pressure sensor 5. The fastening block 9 is provided with three first bolt holes 91 corresponding to the positions of the threaded holes 53, and the pressure plate 10 is provided with three holes 91 corresponding to the positions of the first bolt holes. Corresponding to the second bolt hole 101, after the position of the pressure sensor 5 is determined, by rotating the fastening block 9 and the pressure plate 10, the first bolt hole 91 and the second bolt hole 101 can be corresponding to the threaded hole 53 of the pressure sensor, and then The fastening bolts 13 can be used to complete the fixing of the second extrusion part 4 and the pressure sensor. Therefore, the first perforation 41 is also the rotating structure provided on the second extruding part for the fastener to rotate relative to the center of the sensor, through which the fastener can be rotated freely, so regardless of the pressure sensor Wherever the threaded hole 53 on the top is rotated, the fastener can correspond to it through its own rotation.
由于第二挤压部4完全是依靠紧固件固定在压力传感器上,其本身也有一定的重力,正常情况下有向下倾斜的倾向,这将会影响测量精度。为了平衡掉第二挤压部的重力,对其进行支撑和导向,在第二挤压部4上安装有导向柱6,该导向柱6包括导向支撑段61和固定段62,第一挤压部32上设置有第二固定孔34,固定段62与第二固定孔34螺纹连接,第二挤压部4上设置有第二穿孔42,导向支撑段61穿过第二穿孔42,并且第二穿孔42为长孔。这是由于第一挤压部32和第二挤压部4之间设置的压力传感器一左一右有两个,相应的硬质螺纹套、紧固件、导向柱等也有两套,实际测量时,当一侧的压力传感器先受压时,另一侧将向外移动,即“翘起”,这时导向柱6上的限位台阶63将起到限位作用,避免这一侧过多的“翘起”。同时,由于导向支撑段61的穿孔为长孔,因此该长孔可以保证第二挤压部有微量的晃动而不至于被别死。另外,第一挤压部32左右两侧的限位柱体33起到限位块的作用,从而将第二挤压部4限制在柱体3上的槽体中,防止其沿第一挤压部的轴向移动。Since the second extruding part 4 is completely fixed on the pressure sensor by fasteners, it also has a certain gravity and tends to tilt downward under normal circumstances, which will affect the measurement accuracy. In order to balance the gravity of the second extrusion part, support and guide it, a guide column 6 is installed on the second extrusion part 4, and the guide column 6 includes a guide support section 61 and a fixed section 62. The first extrusion The part 32 is provided with a second fixing hole 34, the fixing section 62 is threadedly connected with the second fixing hole 34, the second extrusion part 4 is provided with a second through hole 42, the guide support section 61 passes through the second through hole 42, and the second Two perforations 42 are long holes. This is because there are two pressure sensors arranged between the first extruding part 32 and the second extruding part 4, one on the left and one on the right, and there are two sets of corresponding hard threaded sleeves, fasteners, guide posts, etc. At this time, when the pressure sensor on one side is pressed first, the other side will move outwards, that is, "tilt up". A lot of "cocking". At the same time, since the perforation of the guide support section 61 is a long hole, the long hole can ensure that the second extruding part has a slight amount of shaking and will not be fastened. In addition, the limiting cylinders 33 on the left and right sides of the first extruding part 32 act as limiting blocks, thereby restricting the second extruding part 4 in the groove on the cylinder 3 to prevent it from moving along the first extruding part 4 . Axial movement of the pressure section.
隔离开关用夹紧力测试工装的工作原理是:使用时,可以模拟真实的静触头固定情况,从而将整个测试工装悬吊在测试车间内的一个横担上,因此在限位柱体33上设置有用于将测试工装固定在高处的固定结构,该固定结构为第一固定孔31,用钢丝穿过第一固定孔31,将钢丝的另一端固定在横担上即可。但是实际上,由于剪刀式隔离开关或者钳夹式隔离开关的高度都比较高,车间内没有合适的固定横担的位置,此时可以将测试工装先固定在一侧的导电杆上,即将第一挤压部32固定在两个第一导电杆1上。具体是第一挤压部32的弓背部分设置有第四固定孔36,利用紧固螺杆14、固定板15和螺母16将第一导电杆1和第一挤压部32实现固定,保证第一导电杆1上的第一触头11与第一挤压部32的弓背部分相接触。The working principle of the clamping force test tool for isolating switches is: when in use, it can simulate the real static contact fixing situation, so that the whole test tool is suspended on a cross arm in the test workshop, so the limit column 33 There is a fixing structure for fixing the test tool at a high place on the top, the fixing structure is the first fixing hole 31, pass the first fixing hole 31 with a steel wire, and fix the other end of the steel wire on the cross arm. But in fact, due to the high height of the scissor-type isolating switch or the clamp-type isolating switch, there is no suitable place to fix the cross-arm in the workshop. An extrusion part 32 is fixed on the two first conductive rods 1 . Specifically, the arched part of the first extruding part 32 is provided with a fourth fixing hole 36, and the first conductive rod 1 and the first extruding part 32 are fixed by using the fastening screw 14, the fixing plate 15 and the nut 16, so as to ensure that the first extruding part 32 is fixed. The first contact 11 on a conductive rod 1 is in contact with the arched part of the first extrusion part 32 .
测试时,将压力传感器5的传感器信号线51连接到显示器(图中未示出)上,第一挤压部32随第一导电杆1移动,当第二导电杆2移动到其上的第二触头12夹紧测试工装时,即可通过显示器观察到夹紧力的大小,完成夹紧力的测试。本发明的测试工装相对于现有技术而言,整个测试工装在装配时,压力传感器可以在360度范围内随意转动,不受120度转动角度的限制,同时在压力传感器安装好以后,通过紧固件相对于压力传感器中心的旋转,即可使紧固件上的螺栓穿孔与压力传感器上的螺纹孔位置对应,实现固定,大大提高了测试工装的装配精度,保证所测得夹紧力的真实性,测量误差大幅减小。During the test, the sensor signal line 51 of the pressure sensor 5 is connected to the display (not shown in the figure), the first extrusion part 32 moves with the first conductive rod 1, when the second conductive rod 2 moves to the second conductive rod 2 on it When the two-contact 12 clamps the test tool, the size of the clamping force can be observed through the display to complete the test of the clamping force. Compared with the prior art, the test tooling of the present invention can freely rotate the pressure sensor within 360 degrees when the whole test tool is assembled without being limited by the rotation angle of 120 degrees. The rotation of the firmware relative to the center of the pressure sensor can make the bolt perforation on the fastener correspond to the position of the threaded hole on the pressure sensor to achieve fixation, which greatly improves the assembly accuracy of the test tool and ensures the accuracy of the measured clamping force. Authenticity, the measurement error is greatly reduced.
隔离开关用夹紧力测试工装的实施例2如图18~图20所示,在该实施例中,用于将第二挤压部4固定在第一挤压部上的紧固件只有紧固螺栓13,与现有技术相同,紧固螺栓13有三个,分别对应压力传感器上的三个螺纹孔,不同的是第二挤压部上设置的螺栓穿孔为长孔,即弧形长孔43,此时当压力传感器装配在第一挤压部上之后,弧形长孔43是比较容易能够与压力传感器上螺纹孔对应的,虽不能实现无极调节,但是可以在一定程度上适应压力传感器的旋进深度,提高测试工装的装配精度,减小测量误差。在该实施例中,弧形长孔43即为供紧固件穿过并能使其相对于压力传感器中心旋转的旋转结构。Embodiment 2 of the clamping force test tooling for disconnectors is shown in Figures 18 to 20. In this embodiment, the fasteners used to fix the second extrusion part 4 on the first extrusion part are only tightening The fastening bolt 13 is the same as the prior art. There are three fastening bolts 13, corresponding to the three threaded holes on the pressure sensor respectively. 43. At this time, when the pressure sensor is assembled on the first extrusion part, the arc-shaped long hole 43 is relatively easy to correspond to the threaded hole on the pressure sensor. Although it cannot realize stepless adjustment, it can adapt to the pressure sensor to a certain extent. The screw-in depth improves the assembly accuracy of the test fixture and reduces the measurement error. In this embodiment, the arc-shaped long hole 43 is a rotating structure through which the fastener passes and can rotate relative to the center of the pressure sensor.
在隔离开关用夹紧力测试工装的其他实施例中:第一挤压部两端的限位块可以不是圆柱体,比如可以是四方体;限位块上的固定结构可以不是孔,比如是吊耳;第一挤压部的两端也可以不设置限位块;第二挤压部上的导向柱穿孔可以不是长孔,而是圆形孔;第二挤压部上可以不设置导向柱;硬质螺纹套的内孔中可以不设置顶丝;第一挤压部上也可以不设置硬质螺纹套,而是直接在第一挤压部上加工出接头固定孔;紧固件可以不包括压板,这时紧固块可以自带有法兰端面;当压力传感器上的螺纹孔有两个或四个时,紧固块、压板上的螺栓穿孔对应的也有两个或四个,或者是第二挤压部上的弧形长孔对应的也有两个或四个。In other embodiments of the clamping force testing tool for the disconnector: the limiting blocks at both ends of the first extrusion part may not be cylinders, such as squares; the fixing structure on the limiting blocks may not be holes, such as hanging ears; the two ends of the first extruding part may not be provided with limit blocks; the perforation of the guide post on the second extruding part may not be a long hole, but a circular hole; the second extruding part may not be provided with a guide post ; The inner hole of the hard threaded sleeve may not be provided with a top wire; the first extruded part may not be provided with a hard threaded sleeve, but a joint fixing hole is directly processed on the first extruded part; the fastener can be The pressure plate is not included, and the fastening block can have its own flange end face; when there are two or four threaded holes on the pressure sensor, there are also two or four bolt holes on the fastening block and the pressure plate. Or there are two or four corresponding arc-shaped slots on the second extrusion part.
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CN111337173B (en) * | 2020-02-28 | 2021-11-19 | 西南电子技术研究所(中国电子科技集团公司第十研究所) | System for measuring locking force of wedge-shaped packaging slot of electronic module |
CN111256896A (en) * | 2020-03-24 | 2020-06-09 | 广西玉柴机器股份有限公司 | Bolt clamp force testing arrangement |
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