Bending resistance testing equipment for enameled round copper wire

Abstract

The utility model discloses equipment for testing the bending resistance of an enameled round copper wire, and belongs to the technical field of enameled round copper wire detection. The bending resistance testing equipment for the enameled round copper wire comprises a main body, the main body comprises a base, the upper end of the base is provided with a fixing mechanism, the fixing mechanism comprises a pair of fixing plates, the opposite surfaces of the pair of fixing plates are connected with hollow cylinders, and first round plates are slidably arranged in the pair of hollow cylinders and close to the fixing plates. Four round rods are connected to one face of the first round plate, a second round plate is connected to the ends, away from the first round plate, of the four round rods, a second two-way lead screw is connected between the first round plate and the second round plate through a bearing, moving seats are in threaded connection with the exteriors of the two ends of the second two-way lead screw, and four first hinge seats are connected to the exteriors of the pair of moving seats; connecting rods are hinged to the interiors of the four first hinge seats, second hinge seats are hinged to one ends of the connecting rods, and a pressing plate is connected between every two adjacent second hinge seats.

Description

Technical Field

[0001] The utility model relates to the technical field of enameled round copper wire detection, in particular to a device for testing the anti-bending performance of enameled round copper wire. Background Art

[0002] Enameled wire is a major type of winding wire, consisting of a conductor and an insulation layer. The bare wire is annealed to soften it, then coated with varnish multiple times and baked. Existing enameled wire typically uses a round copper wire as the core for conductivity, with an annular insulation layer and protective layer surrounding the core for insulation and protection. Multi-core enameled wire is typically arranged in parallel or twisted together.

[0003] Based on the above, the inventors have discovered the following problems: it is not convenient to fix the two ends of the current enameled copper round wire during the bending resistance test. If the two ends of the enameled copper round wire are not clamped well, the enameled wire will slide or move during the test. The loose clamping will cause the enameled wire to be unevenly stressed during the bending process, thereby affecting the accuracy of the test results.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and an enameled copper round wire bending resistance testing device is provided to achieve a more practical purpose. Utility Model Content

[0005] The purpose of the utility model is to provide a device for testing the bending resistance of enameled round copper wire to solve the problems raised in the above background technology.

[0006] In view of the above problems, the technical solution proposed by the present invention is:

[0007] A device for testing the bending resistance of enameled copper round wire comprises a main body, the main body comprises a base, the upper end of the base is provided with a fixing mechanism, the fixing mechanism comprises a pair of fixing plates, opposite sides of the pair of fixing plates are connected to hollow cylinders, the top surfaces and bottom surfaces of opposite ends of the pair of hollow cylinders are provided with through grooves, and the interiors of the pair of hollow cylinders are slidably provided with a first circular plate near the fixing plate, one side of the first circular plate is connected to four round rods, the ends of the four round rods away from the first circular plate are connected to a second circular plate, and the first circular plate and the second circular plate are connected by a bearing A second bidirectional screw rod is connected, and both ends of the second bidirectional screw rod are threadedly connected to a moving seat. A light rod is connected between the first circular plate and the second circular plate near the upper end and the bottom end of the second bidirectional screw rod. One end of the two light rods passes through a pair of moving seats and extends to the outside, and is slidably connected to the pair of moving seats. The outside of a pair of moving seats is connected to four first hinged seats, and the four first hinged seats are hinged with connecting rods. One end of the connecting rod is hinged with a second hinged seat. A pressure plate is connected between an adjacent pair of the second hinged seats, and one side of the pressure plate is arc-shaped.

[0008] Furthermore, a side of the second circular plate away from the four round rods is connected to a mounting box, one end of the second bidirectional screw rod passes through the second circular plate and extends to the interior of the mounting box, and is sleeved with a worm gear, the worm gear is connected to a worm, both ends of the worm are respectively connected to the inner wall of the mounting box through bearings, and one end of the worm rod passes through the mounting box and extends to the outside, and is sleeved with a second knob.

[0009] The beneficial effect of adopting the above further solution is that by providing a second knob, when the second knob is turned, the worm is rotated, driving the worm wheel to rotate and thus realizing the rotation of the second bidirectional screw.

[0010] Furthermore, electric telescopic rods are installed on opposite sides of a pair of fixed plates, and the movable ends of the electric telescopic rods are connected to a side of the first circular plate away from the four circular rods.

[0011] The beneficial effect of adopting the above further solution is that by providing an electric telescopic rod, when the electric telescopic rod is working, it is easy to realize the movement of the first circular plate, the four circular rods and the second circular plate as a whole. When the movable end of the electric telescopic rod is pushed toward the center, the first circular plate, the four circular rods and the second circular plate as a whole are pushed out of the hollow cylinder to facilitate winding on the four circular rods.

[0012] Furthermore, a sliding groove is provided on the upper end surface of the base, and a first bidirectional screw rod is rotatably connected to the inside of the sliding groove. Both ends of the first bidirectional screw rod are externally threadedly connected to sliders, and the outer walls of a pair of sliders are gap-fitted with the inner walls of the sliding groove, and the pair of sliders are both "square" shaped, and the upper ends of the pair of sliders are respectively connected to the bottom ends of a pair of fixed plates.

[0013] The beneficial effect of adopting the above-mentioned further scheme is that by setting a first bidirectional screw rod, when the first bidirectional screw rod rotates, it is easy to drive the "square"-shaped sliders connected to the external threads at both ends thereof to move linearly in opposite directions under the sliding action of the slide groove, so that a pair of fixed plates move linearly in opposite directions, thereby adjusting the distance between the pair of fixed plates, and avoiding the situation where the enameled copper round wire to be tested is too short, resulting in one end of it being wound on the surface of the four round rods on one side and the other end being unable to be wound on the surface of the four round rods on the other side.

[0014] Furthermore, a motor is installed on the outer side wall of the base, and the output end of the motor is transmission-connected to the first bidirectional screw rod.

[0015] The beneficial effect of adopting the above further solution is that by providing a motor, when the motor is started, it is easy to drive the first bidirectional screw rod to rotate.

[0016] Furthermore, hydraulic rods are embedded and installed on the front and back of the base, and a pair of movable ends of the hydraulic rods are connected to a horizontal plate. A first limit seat is installed at the center of the upper end of the horizontal plate. The front and back of the first limit seat are connected to brackets, one of the brackets is connected to a sliding rod, and the other bracket is connected to a screw through a bearing. The outside of the sliding rod and the screw are respectively covered with a first slide and a second slide, and a second limit seat is connected between the first slide and the second slide.

[0017] The beneficial effect of adopting the above-mentioned further scheme is that by setting up two hydraulic rods, when the two hydraulic rods are started, they push the horizontal plate upward, thereby causing the first limit seat and the second limit seat to move upward as a whole, thereby causing the enameled copper round wire limited between the first limit seat and the second limit seat to move up, thereby performing a bending test.

[0018] Furthermore, the sliding rod is slidably connected to the first sliding seat, the screw rod is threadedly connected to the second sliding seat, and the upper end of the screw rod passes through the other bracket and extends to the outside, and is sleeved with a first knob.

[0019] The beneficial effect of adopting the above-mentioned further scheme is that by setting the first knob, when the first knob is rotated, the screw is rotated, so that the second limit seat moves downward under the sliding action of the first slide and the slide rod and the threaded connection between the second slide and the screw, so that the enameled copper round wire to be tested is limited between the first limit seat and the second limit seat, avoiding the deviation of the test point.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: the enameled copper round wire bending resistance testing device is provided with an electric telescopic rod. When the electric telescopic rod is started and its movable end is pushed toward the center, the first circular plate, the four round rods and the second circular plate are pushed out of the hollow cylinder as a whole, so that one end of the enameled copper round wire to be tested is wound around the four round rods, and while winding, the other end of the enameled copper round wire is ensured to be placed in a certain through groove. Then, the movable end of the electric telescopic rod is reset, so that the first circular plate, the four round rods and the second circular plate are moved into the hollow cylinder as a whole. Then, by turning the second knob, the worm is rotated. The worm gear is driven to rotate to realize the rotation of the second bidirectional screw, so that the movable seat connected to the external thread at both ends of the second bidirectional screw moves toward the center under the sliding action of the light rod, so that the pressure plate is squeezed out from the gap between the adjacent pair of round rods under the action of the first hinge seat, the connecting rod and the second hinge seat. At the same time, the gap between the pair of round rods is larger than the size of the pressure plate. When the pressure plate is extruded, the outer surface of the pressure plate is arc-shaped, thereby fixing the enameled copper round wire between the outer wall of the pressure plate and the inner wall of the hollow cylinder, thereby avoiding the two ends of the enameled copper round wire to be tested not being fixed properly, resulting in the displacement of the enameled copper round wire during the test, thereby affecting the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the three-dimensional structure of an enameled copper round wire bending resistance testing device provided by the present invention;

[0022] Figure 2 A schematic diagram of a partial three-dimensional structure of a horizontal plate of an enameled copper round wire bending resistance testing device provided by the present invention;

[0023] Figure 3 Schematic diagram of the exploded three-dimensional structure of the fixing mechanism of the enameled copper round wire bending resistance test equipment provided by the utility model Figure 1 ;

[0024] Figure 4 Schematic diagram of the exploded three-dimensional structure of the fixing mechanism of the enameled copper round wire bending resistance test equipment provided by the utility model Figure 2 ;

[0025] Figure 5 The utility model provides a schematic side sectional structure diagram of an installation box for testing the bending resistance of enameled round copper wire.

[0026] In the figure: 100, main body; 1001, base; 1002, slide; 1003, first bidirectional screw; 1004, slider; 1005, motor; 1006, hydraulic rod; 1007, horizontal plate; 1008, first limit seat; 1009, bracket; 1010, slide; 1011, screw; 1012, second slide; 1013, second limit seat; 1014, first knob; 200, fixing mechanism; 2001, fixing plate; 2 002, hollow cylinder; 2003, through slot; 2004, first circular plate; 2005, round rod; 2006, second circular plate; 2007, second bidirectional screw; 2008, movable seat; 2009, smooth rod; 2010, first articulated seat; 2011, connecting rod; 2012, second articulated seat; 2013, pressing plate; 2014, electric telescopic rod; 2015, mounting box; 2016, worm gear; 2017, worm; 2018, second knob. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] See also Figure 1-Figure 5The utility model provides a technical solution: a device for testing the bending resistance of enameled copper round wire, comprising a main body 100, the main body 100 comprising a base 1001, a fixing mechanism 200 being provided at the upper end of the base 1001, the fixing mechanism 200 comprising a pair of fixing plates 2001, each of the opposite sides of the pair of fixing plates 2001 being connected to a hollow cylinder 2002, a through groove 2003 being provided on the top and bottom surfaces of the opposite ends of the pair of hollow cylinders 2002, and a first circular plate 2004 being slidably provided near the fixing plate 2001 in the interior of the pair of hollow cylinders 2002, four round rods 2005 being connected to one side of the first circular plate 2004, and the four round rods 2005 being connected to the other end away from the first circular plate 2004. A second circular plate 2006 is connected, and a second bidirectional screw rod 2007 is connected between the first circular plate 2004 and the second circular plate 2006 through a bearing. Both ends of the second bidirectional screw rod 2007 are threadedly connected to a movable seat 2008. A light-shifting rod 2009 is connected between the first circular plate 2004 and the second circular plate 2006 near the upper end and the bottom end of the second bidirectional screw rod 2007. One end of the two light-shifting rods 2009 passes through a pair of movable seats 2008 and extends to the outside, and is slidably connected to the pair of movable seats 2008. The outside of the pair of movable seats 2008 is connected to four first hinged seats 2010, and the four first hinged seats 2010 are hinged with connecting rods 2011. The connecting rods 201 One end of 1 is hinged with a second hinge seat 2012, and a pressure plate 2013 is connected between an adjacent pair of second hinge seats 2012. One side of the pressure plate 2013 is arc-shaped. When the first circular plate 2004, the four round rods 2005 and the second circular plate 2006 are pushed out of the hollow cylinder 2002 as a whole, it is convenient to wind one end of the enameled copper round wire to be tested on the four round rods 2005, and at the same time ensure that the other end of the enameled copper round wire can be placed in a certain through groove 2003. Then, the first circular plate 2004, the four round rods 2005 and the second circular plate 2006 are moved into the hollow cylinder 2002 as a whole. When the second bidirectional screw rod 2007 rotates, the two ends of the second bidirectional screw rod 2007 are The movable seat 2008 connected by the external thread moves toward the center under the sliding action of the light rod 2009, so that the pressure plate 2013 is squeezed out from the gap between the adjacent pair of round rods 2005 under the action of the first hinge seat 2010, the connecting rod 2011 and the second hinge seat 2012. At the same time, the gap between the pair of round rods 2005 is larger than the size of the pressure plate 2013. When the pressure plate 2013 is extruded, and the outer surface of the pressure plate 2013 is arc-shaped, the enameled copper round wire is fixed between the outer wall of the pressure plate 2013 and the inner wall of the hollow cylinder 2002, thereby avoiding the displacement of the enameled copper round wire during the test due to the two ends of the enameled copper round wire to be tested not being fixed properly, thereby affecting the test results.

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] See also Figure 1-Figure 5 The utility model provides a technical solution: the second circular plate 2006 is connected to the installation box 2015 on one side away from the four round rods 2005, one end of the second bidirectional screw 2007 passes through the second circular plate 2006 and extends to the interior of the installation box 2015, and is sleeved with a worm gear 2016, the worm gear 2016 is transmission-connected to a worm 2017, both ends of the worm 2017 are connected to the inner wall of the installation box 2015 through bearings, and one end of the worm 2017 passes through the installation box 2015 and extends to the outside, and is sleeved with a second knob 2018, and the opposite sides of a pair of fixed plates 2001 are both installed with electric telescopic rods 2 014, the movable end of the electric telescopic rod 2014 is connected to the side of the first circular plate 2004 away from the four circular rods 2005, the upper end surface of the base 1001 is provided with a slide groove 1002, the internal rotation of the slide groove 1002 is connected to the first bidirectional screw rod 1003, the two ends of the first bidirectional screw rod 1003 are threadedly connected to the outside of the slider 1004, the outer wall of the pair of sliders 1004 is gap-matched with the inner wall of the slide groove 1002, and the pair of sliders 1004 are both "square" shaped, the upper ends of the pair of sliders 1004 are respectively connected to the bottom ends of the pair of fixed plates 2001, and the outer wall of the base 1001 is installed with a motor 1 005, the output end of the motor 1005 is connected to the first bidirectional screw rod 1003 by transmission, and the electric telescopic rod 2014 is set. When the electric telescopic rod 2014 is started and the movable end is pushed toward the center, the first circular plate 2004, the four circular rods 2005 and the second circular plate 2006 are pushed out of the hollow cylinder 2002 as a whole. When the movable end of the electric telescopic rod 2014 is reset, the first circular plate 2004, the four circular rods 2005 and the second circular plate 2006 are moved into the hollow cylinder 2002 as a whole. By turning the second knob 2018, the worm 2017 rotates, driving the worm gear 2 016 is rotated to realize the rotation of the second bidirectional screw rod 2007. By setting the motor 1005, when the motor 1005 is started, it is convenient to drive the first bidirectional screw rod 1003 to rotate, and drive the "square" slider 1004 with external threads connected at both ends thereof to move linearly in opposite directions under the sliding action of the slide groove 1002, so that a pair of fixed plates 2001 move linearly in opposite directions, thereby adjusting the distance between the pair of fixed plates 2001, and avoiding the enameled copper round wire to be tested being shorter, resulting in one end of it being wound on the surface of the four round rods 2005 on one side and the other end being unable to be wound on the surface of the four round rods 2005 on the other side.

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] See also Figure 1-Figure 5 The utility model provides a technical solution: hydraulic rods 1006 are embedded in the front and back of the base 1001, and the movable ends of a pair of hydraulic rods 1006 are connected to a horizontal plate 1007. A first limiting seat 1008 is installed at the center of the upper end of the horizontal plate 1007. The front and back of the first limiting seat 1008 are connected to a bracket 1009, and the interior of one of the brackets 1009 is connected to a sliding rod 1010, and the interior of the other bracket 1009 is connected to a screw 1011 through a bearing. The outsides of the sliding rod 1010 and the screw 1011 are respectively provided with a first sliding seat and a second sliding seat 1012, and a second limiting seat 1013 is connected between the first sliding seat and the second sliding seat 1012. The sliding rod 1010 is slidably connected to the first sliding seat, and the screw 1011 is threadedly connected to the second sliding seat 1012, and the upper end of the screw 1011 passes through it. Another bracket 1009 extends to the outside and is sleeved with a first knob 1014. By setting the first knob 1014, when the first knob 1014 is rotated, the screw 1011 is rotated, so that the second limit seat 1013 moves downward under the sliding action of the first slide and the slide rod 1010 and the threaded connection between the second slide 1012 and the screw 1011, so that the enameled copper round wire to be tested is limited between the first limit seat 1008 and the second limit seat 1013, avoiding the test point from being offset. By setting the hydraulic rod 1006, when the two hydraulic rods 1006 are started, they push the cross plate 1007 upward, so that the first limit seat 1008 and the second limit seat 1013 move up as a whole, so that the enameled copper round wire limited between the first limit seat 1008 and the second limit seat 1013 moves up, thereby performing a bending test.

[0033] Specifically, the working principle of the enameled copper round wire bending resistance testing device is as follows: when in use, the electric telescopic rod 2014 is started, and when its movable end is pushed toward the center, the first circular plate 2004, the four round rods 2005 and the second circular plate 2006 are pushed out of the hollow cylinder 2002 as a whole, so that one end of the enameled copper round wire to be tested can be wound around the four round rods 2005, and while winding, ensure that the other end of the enameled copper round wire can be placed in a certain through groove 2003, and then the first circular plate 2004, the four round rods 2005 and the second circular plate 2006 are moved as a whole into the hollow cylinder 2002, and by turning the second knob 2018, the worm 2017 is rotated, driving the worm gear 2016 to rotate to realize the second bidirectional operation. The rotation of the screw rod 2007 causes the movable seat 2008 connected to the external thread at both ends of the second bidirectional screw rod 2007 to move toward the center under the sliding action of the light rod 2009, so that the pressure plate 2013 is squeezed out from the gap between the adjacent pair of round rods 2005 under the action of the first hinge seat 2010, the connecting rod 2011 and the second hinge seat 2012. At the same time, the gap between the pair of round rods 2005 is larger than the size of the pressure plate 2013. When the pressure plate 2013 is squeezed out, the outer surface of the pressure plate 2013 is arc-shaped, thereby fixing the enameled copper round wire between the outer wall of the pressure plate 2013 and the inner wall of the hollow cylinder 2002. When the movable end of the electric telescopic rod 2014 is reset, the first circular plate 2004 and the four round rods 2005 are squeezed out. 005 and the second circular plate 2006 move as a whole into the hollow cylinder 2002. When the motor 1005 is started, it is easy to drive the first bidirectional screw rod 1003 to rotate, and drive the "square" slider 1004 connected to the external thread at both ends to move linearly in opposite directions under the sliding action of the slide groove 1002, so that the pair of fixed plates 2001 move linearly in opposite directions, thereby adjusting the distance between the pair of fixed plates 2001 to avoid the enameled copper round wire to be tested being too short, resulting in one end of it being wound around the surface of the four round rods 2005 on one side and the other end being unable to be wound around the surface of the four round rods 2005 on the other side. Then, the fixed end of the enameled copper round wire is passed through the first limit seat 1008 and the second limit seat 1013 and then fixed. When the first knob 1014 is rotated, the screw 1011 is rotated, so that the second limit seat 1013 moves downward under the sliding action of the first slide and the slide rod 1010 and the threaded connection between the second slide 1012 and the screw 1011, so that the enameled copper round wire to be tested is limited between the first limit seat 1008 and the second limit seat 1013 to avoid the test point from being offset. When the two ends of the enameled copper round wire are fixed, the two hydraulic rods 1006 are started to push the cross plate 1007 upward, so that the first limit seat 1008 and the second limit seat 1013 move up as a whole, so that the enameled copper round wire limited between the first limit seat 1008 and the second limit seat 1013 moves up, so as to perform a bending test.

Claims

1. A device for testing the bending resistance of enameled round copper wire, characterized in that: The invention comprises a main body (100), wherein the main body (100) comprises a base (1001), and a fixing mechanism (200) is provided at the upper end of the base (1001), wherein the fixing mechanism (200) comprises a pair of fixing plates (2001), wherein opposite sides of the pair of fixing plates (2001) are connected to hollow cylinders (2002), and opposite top and bottom surfaces of the pair of hollow cylinders (2002) are provided with through grooves (2003), and the insides of the pair of hollow cylinders (2002) are slidably provided with first circular plates (2004) near the fixing plates (2001), wherein one side of the first circular plate (2004) is connected to four round rods (2005), and the ends of the four round rods (2005) away from the first circular plate (2004) are connected to a second circular plate (2006), and a second bidirectional bearing is connected between the first circular plate (2004) and the second circular plate (2006) via a bearing. The screw rod (2007) is provided with a movable seat (2008) at both ends of the second bidirectional screw rod (2007) being threadedly connected to the outside. A light-shifting rod (2009) is connected between the first circular plate (2004) and the second circular plate (2006) near the upper end and the bottom end of the second bidirectional screw rod (2007). One end of each of the two light-shifting rods (2009) passes through a pair of movable seats (2008) and extends to the outside. The two light-shifting rods (2009) are slidably connected to the pair of movable seats (2008). The outside of each pair of movable seats (2008) is connected with four first hinged seats (2010). The four first hinged seats (2010) are hinged with connecting rods (2011). One end of the connecting rod (2011) is hinged with a second hinged seat (2012). A pressure plate (213) is connected between an adjacent pair of second hinged seats (2012). One side of the pressure plate (2013) is arc-shaped.

2. The bending resistance testing device for enameled round copper wire according to claim 1, characterized in that: The side of the second circular plate (2006) away from the four round rods (2005) is connected to the installation box (2015), one end of the second bidirectional screw (2007) passes through the second circular plate (2006) and extends to the interior of the installation box (2015), and is sleeved with a worm wheel (2016), and the worm wheel (2016) is transmission-connected to a worm (2017), and both ends of the worm (2017) are respectively connected to the inner wall of the installation box (2015) through bearings, and one end of the worm (2017) passes through the installation box (2015) and extends to the outside, and is sleeved with a second knob (2018).

3. The bending resistance testing device for enameled round copper wire according to claim 2, characterized in that: An electric telescopic rod (2014) is installed on opposite sides of a pair of fixed plates (2001), and the movable end of the electric telescopic rod (2014) is connected to a side of the first circular plate (2004) away from the four circular rods (2005).

4. The bending resistance testing device for enameled round copper wire according to claim 1, characterized in that: A slide groove (1002) is provided on the upper end surface of the base (1001), and a first bidirectional screw rod (1003) is rotatably connected to the inside of the slide groove (1002), and both ends of the first bidirectional screw rod (1003) are externally threadedly connected to sliders (1004), and the outer walls of a pair of sliders (1004) are clearance-matched with the inner walls of the slide groove (1002), and the pair of sliders (1004) are both "square" shaped, and the upper ends of the pair of sliders (1004) are respectively connected to the bottom ends of a pair of fixed plates (2001).

5. The bending resistance testing device for enameled round copper wire according to claim 4, characterized in that: A motor (1005) is installed on the outer side wall of the base (1001), and an output end of the motor (1005) is transmission-connected to the first bidirectional screw rod (1003).

6. The bending resistance testing device for enameled round copper wire according to claim 5, characterized in that: The front and back sides of the base (1001) are both embedded with hydraulic rods (1006), the movable ends of a pair of the hydraulic rods (1006) are connected to a transverse plate (1007), a first limit seat (1008) is installed at the center of the upper end of the transverse plate (1007), the front and back sides of the first limit seat (1008) are both connected to brackets (1009), one of the brackets (1009) is internally connected to a sliding rod (1010), and the other bracket (1009) is internally connected to a screw rod (1011) via a bearing, the sliding rod (1010) and the screw rod (1011) are respectively sleeved with a first slide seat and a second slide seat (1012), and a second limit seat (1013) is connected between the first slide seat and the second slide seat (1012).

7. The bending resistance testing device for enameled round copper wire according to claim 6, characterized in that: The sliding rod (1010) is slidably connected to the first sliding seat, and the screw rod (1011) is threadedly connected to the second sliding seat (1012). The upper end of the screw rod (1011) passes through another bracket (1009) and extends to the outside, and is sleeved with a first knob (1014).

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