A resistance tester for cable conductors

Abstract

The present invention discloses a resistance tester for cable conductors, including a storage box and a protective flap hingedly mounted on the top of the storage box; further comprising: protective mechanisms are provided at both left and right ends of the protective flap; wherein a test cavity is provided inside the storage box; wherein line inlet slots are provided at equal distances on both left and right sides of the storage box, and the line inlet slots provided at equal distances correspond to the protective brackets included in the protective mechanism. The resistance tester for cable conductors protects the line inlet slots provided in the storage box through the protective mechanism of the protective flap, and cleans the line inlet slots through the rotation of the dust removal brush when it is opened, and then when the guide roller of the guide mechanism drives the cable to move, the oppositely moving test connector docks with the cable, so that the resistance of the cable can be tested through the tester body, thereby improving the accuracy of the test data.

Description

Technical Field

[0001] The invention relates to the technical field of cable resistance testing, in particular to a resistance tester for a cable conductor. Background Art

[0002] Cable resistance refers to the resistance of electrons to the movement of wires when current passes through them. This resistance is one of the basic physical properties of wires or cables. The cable resistance tester is an instrument for measuring the conductivity of cables. Resistance testers are widely used in electrical safety inspections and project completion acceptance. Resistance testers can be used to detect the cores in cables to prevent cable damage caused by short circuits or open circuits.

[0003] The invention with the publication number CN114509606B discloses a portable resistance tester for cables. The second ring body is rotated so that the second ring body and the first ring body and the fixed ring rotate relative to each other. Under the action of the rack and the gear, the gear drives the rotating column to rotate, and the rotating column drives the first conical teeth to rotate. Under the action of the conical conical teeth and the conical conical teeth, the second conical teeth drive the screw to rotate. Under the action of the screw and the extrusion cylinder, and the extrusion cylinder and the sliding groove limiting each other, the extrusion cylinder gradually extends to extrude the rubber sleeve, thereby completing the fixing of the cable.

[0004] The invention with publication number CN117347681B discloses a DC resistance tester. When the electric clamp assembly contacts the cable to generate an arc, the arc extinguishing mechanism can cooperate with the supporting mechanism to extinguish the arc, thereby avoiding the damage that the arc may cause to equipment and personnel and improving the safety of work. The existence of the arc extinguishing mechanism increases the resistance of the current, thereby generating heat, which helps to increase the temperature of the arc extinguishing mechanism itself and enhances its arc extinguishing ability.

[0005] However, the above-mentioned resistance tester for cable conductors still has the following problems during actual use: the resistance test of the cable conductor is realized by the built-in tester in the box, but the existing cable conductors are mainly installed in power equipment, and they are sticky with a lot of dust and dirt due to long-term working operation, which can easily cause detection errors during the detection process. At the same time, the cables are of different specifications, and the staff needs to manually connect to the tester during the detection process, which can easily lead to errors in the detection data due to manual push misalignment.

[0006] Therefore, we propose a resistance tester for cable conductors to solve the above problems. Summary of the invention

[0007] The purpose of the present invention is to provide a resistance tester for cable conductors, in order to solve the problem that the existing resistance test of cable conductors is realized by a tester built into a box, but the existing cable conductors are mainly installed in power equipment, and they stick to a lot of dust and dirt during long-term working operation, which can easily cause detection errors during the detection process. At the same time, the cables have different specifications, and the staff needs to manually connect them to the tester during the detection process, which can easily lead to errors in the detection data due to manual push dislocation.

[0008] To achieve the above object, the present invention provides the following technical solution: a resistance tester for a cable conductor, comprising a storage box and a protective flip cover hingedly mounted on the top of the storage box; and further comprising:

[0009] The left and right ends of the protective flap are both provided with protective mechanisms, and the protective mechanisms include protective brackets, and the protective brackets are fixedly installed at equal distances on the left and right sides of the bottom end of the protective flap;

[0010] A test cavity is provided inside the storage box, and guide mechanisms are provided on both left and right sides of the test cavity, and the guide mechanisms include guide brackets, and the guide brackets are fixedly installed on both left and right sides of the test cavity;

[0011] Among them, wire inlet slots are evenly spaced on the left and right sides of the storage box, and the wire inlet slots opened at equal distances are distributed in a one-to-one correspondence with the protection brackets included in the protection mechanism.

[0012] Preferably, the protection mechanism includes a protection turntable, and the protection turntable is rotatably arranged on the left and right sides of the bottom end of the protection bracket arranged at equal distances through a bearing, and dust removal brush discs are fixedly arranged on the inner sides of the symmetrically arranged protection turntables. After the protection bracket follows the protection flap to move to the top of the storage box, the protection bracket enters the wire inlet slot through the protection turntable and dust removal brush disc on the left and right sides of the bottom end of the protection bracket.

[0013] Preferably, the protection mechanism includes a driving tooth block and a driving rack, and the driving tooth block is fixedly installed on the outer wall of the protective turntable outside the bottom end of the protection bracket which is equidistantly arranged, and the driving rack is fixedly installed on the left and right sides of the interior of the storage box at equidistant intervals, and the driving rack is located on the side of the wire feed slot, and at the same time, the driving rack is meshed and connected to the driving tooth block on the outer wall of the protection turntable.

[0014] Preferably, the protection mechanism includes a driving shaft, and the driving shaft is rotatably arranged at the inner upper end of the protection bracket, and the outer end of the driving shaft is meshed and connected to the shafts of the left and right protection turntables inside the protection bracket through a third sprocket mechanism, so that the left and right protection turntables can rotate synchronously with the dust removal brush disc.

[0015] Preferably, the guiding mechanism includes a bidirectional threaded rod, and the bidirectional threaded rod is rotatably arranged below the test cavity inside the storage box through a bearing, and a transmission shaft is rotatably arranged in the middle of the bottom surface of the guiding bracket included in the guiding mechanism through a bearing, and the bottom end of the transmission shaft is meshed and connected to the left and right ends of the bidirectional threaded rod through a bevel gear group.

[0016] Preferably, the guiding mechanism includes a bidirectional threaded rod, and the bidirectional threaded rod is rotatably arranged below the test cavity inside the storage box through a bearing, and a transmission shaft is rotatably arranged in the middle of the bottom surface of the guiding bracket included in the guiding mechanism through a bearing, and the bottom end of the transmission shaft is meshed and connected to the left and right ends of the bidirectional threaded rod through a bevel gear group.

[0017] Preferably, the lower end outer walls of the adjacent guide rollers above the guide bracket are meshed and connected via a first sprocket mechanism, and the bottom end of the guide roller in the middle of the guide bracket is meshed and connected to the upper end of the transmission shaft via a second sprocket mechanism, and the cable conductor is pulled and moved by each group of two symmetrically distributed guide rollers.

[0018] Preferably, the tester body is fixedly installed at the inner center position of the protective flap, and a cable positioning frame is rotatably installed above the test cavity inside the storage box, and the cable positioning frame is used to position and install the test cable of the tester body, and guide slide bars are fixedly installed on the front and rear sides of the interior of the test cavity, and the outer wall of the guide slide bar is slidably connected to the outer end of the test cross plate.

[0019] Preferably, the test cross plate inside the test cavity is fixedly connected to the bottom end of the cable passing through the cable positioning frame, and the test cross plate is threadedly connected to the outer wall of the bidirectional threaded rod in a left-right symmetrical manner, and the top surface of the test cross plate is fixedly connected to the bottom end of the test connector, and the cable conductor entering the test cavity is tested through the test connector.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: the resistance tester for cable conductors protects the inlet slots opened in the storage box through the protection mechanism of the protective flip cover, and cleans the inlet slots through the rotation of the dust removal brush disc when it is opened, and then when the guide roller of the guide mechanism drives the cable to move, the test connector moving in the opposite direction docks with the cable, so that the resistance of the cable can be tested through the tester body, thereby improving the accuracy of the test data. The specific contents are as follows:

[0021] 1. The protective cover drives the protective brackets at both ends to move, and then the driving gear block fixedly installed on the outer wall of the protective turntable at the bottom of the protective bracket moves along with it. At the same time, the driving gear block meshes with the driving rack fixedly installed inside the storage box during the movement, so that the driving rack drives the driving gear block and the protective turntable to rotate;

[0022] Furthermore, the protective turntable drives the driving shaft to rotate through the third sprocket mechanism, and the driving shaft drives the outer protective turntable and the dust brush disc to rotate synchronously, and then the dust brush discs arranged on the left and right sides of the incoming cable slot rotate during the movement, so as to clean and remove dust from the incoming cable slot where the cable enters, so as to prevent the incoming and outgoing cables from leaving dust inside and affecting subsequent tests;

[0023] 2. Insert the two ends of the cable into the cable entry slots on the left and right sides, and then the bidirectional threaded rod rotates through the bevel gear groups on the left and right sides to drive the transmission shaft to rotate, and then the transmission shaft drives the meshing guide gear to rotate through the second sprocket mechanism at the upper end, and then the guide roller drives the remaining guide rollers to rotate through the first sprocket mechanism, thereby driving the cable to move into the test cavity, so as to maintain the synchronization of the cable movement;

[0024] 3. The bidirectional threaded rod drives the threaded test cross plate to slide outward, and then drives the test connector to contact the end of the cable entering the test cavity. The conical structure inside the test connector contacts the cable end, thereby preventing it from falling off during the test, so that the resistance of the cable can be tested through the tester body to improve the accuracy of the test data. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the installation structure of the tester body of the present invention;

[0027] Figure 3 This is a schematic diagram of the installation structure of the test splicer of the present invention;

[0028] Figure 4 This is a schematic diagram of the three-dimensional structure of the protective bracket of the present invention;

[0029] Figure 5 This is a schematic diagram of the installation structure of the dust removal brush disc of the present invention;

[0030] Figure 6 This is a schematic diagram of the three-dimensional structure of the driving rack of the present invention;

[0031] Figure 7 This is a schematic diagram of the structure in which the dust removal brush disc of the present invention is installed inside the wire inlet slot;

[0032] Figure 8 This is a schematic diagram of the three-dimensional structure of the guide roller of the present invention;

[0033] Fig. 9 This is a schematic diagram of the guide gear installation structure of the present invention;

[0034] Fig.10 It is a schematic diagram of the three-dimensional structure of the test splicer of the present invention.

[0035] In the figure: 1. storage box; 2. protective flap; 3. protective bracket; 4. test chamber; 5. guide bracket; 6. cable inlet slot; 7. protective turntable; 8. dust removal brush plate; 9. drive gear block; 10. drive rack; 11. guide roller; 12. guide gear; 13. bidirectional threaded rod; 14. transmission shaft; 15. first sprocket mechanism; 16. second sprocket mechanism; 17. tester body; 18. cable positioning frame; 19. guide slide bar; 20. test cross plate; 21. test lap joint; 22. bevel gear set; 23. drive shaft; 24. third sprocket mechanism. DETAILED DESCRIPTION

[0036] 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 implementation regulations 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 creative work are within the scope of protection of the present invention.

[0037] See also Figure 1-Figure 10 , the present invention provides the following technical solutions:

[0038] Embodiment 1: In order to solve the problems existing in the use of the existing tester body 17, the present embodiment adopts the following technical scheme: a resistance tester for cable conductors, comprising a storage box 1, and a protective flap 2 hingedly mounted on the top of the storage box 1; both left and right ends of the protective flap 2 are provided with protective mechanisms, and the protective mechanism includes a protective bracket 3, and the protective bracket 3 is fixedly mounted at equal distances on the left and right sides of the bottom end of the protective flap 2; wherein, the left and right sides of the storage box 1 are evenly spaced with inlet slots 6, and the inlet slots 6 opened at equal distances are distributed one-to-one with the protective bracket 3 included in the protective mechanism;

[0039] The protection mechanism includes a protection turntable 7, and the protection turntable 7 is rotatably arranged on the left and right sides of the bottom end of the protection bracket 3 arranged at an equal distance through a bearing, and the inner sides of the symmetrically arranged protection turntables 7 are fixedly arranged with dust removal brush discs 8, and after the protection bracket 3 moves to the top of the storage box 1 following the protection flip cover 2, the protection turntable 7 and the dust removal brush disc 8 on the left and right sides of the bottom end of the protection bracket 3 enter the inlet slot 6; the protection mechanism includes a driving tooth block 9 and a driving rack 10, and the driving tooth block 9 is fixedly installed on the outer side of the bottom end of the protection bracket 3 arranged at an equal distance. 7, and the driving rack 10 is fixedly installed at the left and right sides of the storage box 1 at equal distances, and the driving rack 10 is located on the side of the inlet slot 6, and the driving rack 10 is meshed and connected to the driving tooth block 9 on the outer wall of the protective turntable 7; the protective mechanism includes a driving shaft 23, and the driving shaft 23 is rotatably arranged at the upper end of the inner part of the protective bracket 3, and the outer end of the driving shaft 23 is meshed and connected to the rotating shaft of the protective turntable 7 on the left and right sides of the protective bracket 3 through a third sprocket mechanism 24, so that the protective turntable 7 on the left and right sides and the dust removal brush disc 8 rotate synchronously;

[0040] like Figure 4-Figure 7 As shown, when the resistance of the cable conductor needs to be tested through the storage box 1 and the tester body 17 inside the upper protective flip cover 2, the protective flip cover 2 hingedly covering the top surface of the storage box 1 is first flipped over, so that the protective flip cover 2 drives the protective mechanisms on both sides and the tester body 17 inside to flip over, so that the tester body 17 is in an open state for subsequent use;

[0041] Furthermore, the protective flap 2 drives the protective bracket 3 equidistantly arranged at both ends to move, and then the driving tooth block 9 fixedly installed on the outer wall of the protective turntable 7 at the bottom end of the protective bracket 3 follows the movement, and at the same time, the driving tooth block 9 engages with the driving rack 10 fixedly installed inside the storage box 1 during the movement, so that the driving rack 10 drives the driving tooth block 9 and the protective turntable 7 to rotate, and at the same time, the protective turntable 7 drives the driving shaft 23 to rotate through the third sprocket mechanism 24, and the driving shaft 23 drives the outer protective turntable 7 and the dust removal brush disc 8 to rotate synchronously, and then the dust removal brush disc 8 arranged on the left and right sides of the inside of the wire entry slot 6 rotates during the movement, so as to clean and remove dust from the wire entry slot 6 where the cable enters, so as to prevent the incoming and outgoing cables from leaving dust inside and affecting subsequent tests.

[0042] Embodiment 2: In order to solve the problems existing in the use of the existing tester body 17, the present embodiment adopts the following technical scheme, wherein a test cavity 4 is provided inside the storage box 1, and guide mechanisms are provided on both the left and right sides of the inside of the test cavity 4, and the guide mechanisms include guide brackets 5, and the guide brackets 5 are fixedly installed on the left and right sides of the inside of the test cavity 4; the guide mechanisms include guide rollers 11, and the guide rollers 11 are installed in groups of two and rotate equidistantly on the top surface of the guide bracket 5, and each group of two guide rollers 11 is correspondingly distributed on the inner side of the wire inlet slot 6, and the bottom ends of the symmetrically arranged guide rollers 11 are fixedly provided with guide gears 12, and the guide gears 12 at the bottom ends of each group of guide rollers 11 are meshed and connected with each other;

[0043] The guide mechanism includes a bidirectional threaded rod 13, and the bidirectional threaded rod 13 is rotatably arranged below the test cavity 4 inside the storage box 1 through a bearing, and a transmission shaft 14 is rotatably arranged in the middle of the bottom surface of the guide bracket 5 included in the guide mechanism through a bearing, and the bottom end of the transmission shaft 14 is meshed and connected to the left and right ends of the bidirectional threaded rod 13 through a bevel gear set 22; the lower end outer wall of the adjacent guide roller 11 above the guide bracket 5 is meshed and connected through a first sprocket mechanism 15, and the bottom end of the guide roller 11 in the middle of the guide bracket 5 is meshed and connected to the upper end of the transmission shaft 14 through a second sprocket mechanism 16, and the cable conductor is pulled and moved by each group of two symmetrically distributed guide rollers 11;

[0044] like Figure 8-Figure 9 As shown, after the wire entry slots 6 on the left and right sides of the storage box 1 are opened, the head and tail ends of the cable are manually inserted into the wire entry slots 6 on the left and right sides respectively, and then the bidirectional threaded rod 13 installed inside the test cavity 4 is driven to rotate by the driving motor, and then the bidirectional threaded rod 13 drives the meshing transmission shaft 14 to rotate through the bevel gear groups 22 on the left and right sides, and then the transmission shaft 14 drives the meshing guide gear 12 to rotate through the second sprocket mechanism 16 at the upper end, and the rotating guide gear 12 drives each group of guide rollers 11 to rotate in the opposite direction, and then each group of guide rollers 11 drives the remaining guide rollers 11 to rotate synchronously through the first sprocket mechanism 15, thereby driving the cable inserted in the guide roller 11 to move to the inside of the test cavity 4, so as to maintain the synchronization of cable movement and avoid errors during manual operation.

[0045] Embodiment 3: In order to solve the problems existing in the use of the existing tester body 17, the present embodiment adopts the following technical scheme: the tester body 17 is fixedly installed at the inner center position of the protective flip cover 2, a cable positioning frame 18 is rotatably installed above the test cavity 4 inside the storage box 1, and the cable positioning frame 18 is used to position and install the test cable of the tester body 17, and guide slide bars 19 are fixedly installed on both the front and rear sides of the test cavity 4, and the outer wall of the guide slide bar 19 is slidably connected to the outer end of the test cross plate 20;

[0046] The test horizontal plate 20 inside the test cavity 4 is fixedly connected to the bottom end of the cable passing through the cable positioning frame 18, and the test horizontal plate 20 is threadedly connected to the outer wall of the bidirectional threaded rod 13 in a bilaterally symmetrical manner, and the top surface of the test horizontal plate 20 is fixedly connected to the bottom end of the test jumper 21, and the cable conductor entering the test cavity 4 is tested through the test jumper 21;

[0047] like Figure 2 , Fig.10 As shown, the bidirectional threaded rod 13 rotating inside the test cavity 4 drives the test cross plate 20 threadedly connected on the left and right sides to slide outward along the guide slide bars 19 on the front and rear sides, and then the test cross plate 20 drives the test connector 21 at the upper end to contact the end of the cable entering the test cavity 4, and the conical structure inside the test connector 21 contacts the cable end, thereby preventing it from falling off during the test. At the same time, the test cross plate 20 connects the connecting cable inside the cable positioning frame 18 with the tester body 17, so that the resistance of the cable can be tested through the tester body 17, thereby improving the accuracy of the test data.

[0048] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A resistance tester for a cable conductor, comprising a storage box (1), and a protective flap (2) hingedly mounted on the top of the storage box (1); It is characterized in that Also includes: The left and right ends of the protective flap (2) are both provided with protective mechanisms, and the protective mechanisms include protective brackets (3), and the protective brackets (3) are fixedly installed at equal distances on the left and right sides of the bottom end of the protective flap (2); A test cavity (4) is provided inside the storage box (1), and guide mechanisms are provided on both left and right sides of the interior of the test cavity (4), and the guide mechanisms include guide brackets (5), and the guide brackets (5) are fixedly mounted on both left and right sides of the interior of the test cavity (4); In which, the storage box (1) has wire inlet slots (6) equidistantly provided on both left and right sides thereof, and the wire inlet slots (6) equidistantly provided are arranged in a one-to-one correspondence with the protection brackets (3) included in the protection mechanism; The guide mechanism comprises guide rollers (11), and the guide rollers (11) are installed in groups of two and rotate at equal distances on the top surface of the guide bracket (5), and each group of two guide rollers (11) is correspondingly distributed on the inner side of the inlet slot (6), and the bottom ends of the symmetrically arranged guide rollers (11) are fixedly provided with guide gears (12), and the guide gears (12) at the bottom ends of each group of guide rollers (11) are meshed and connected with each other; The guide mechanism comprises a bidirectional threaded rod (13), and the bidirectional threaded rod (13) is rotatably arranged below the test cavity (4) inside the storage box (1) via a bearing, and a transmission shaft (14) is rotatably arranged at the middle of the bottom surface of the guide bracket (5) included in the guide mechanism via a bearing, and the bottom end of the transmission shaft (14) is meshedly connected to the left and right ends of the bidirectional threaded rod (13) via a bevel gear set (22); The lower end outer walls of the adjacent guide rollers (11) above the guide bracket (5) are meshedly connected via a first sprocket mechanism (15), and the bottom end of the guide roller (11) in the middle of the guide bracket (5) is meshedly connected to the upper end of the transmission shaft (14) via a second sprocket mechanism (16), and the cable conductor is pulled and moved by each group of two symmetrically distributed guide rollers (11).

2. A resistance tester for cable conductors according to claim 1, characterized in that: The protection mechanism comprises a protection rotating disk (7), and the protection rotating disk (7) is rotatably arranged on the left and right sides of the bottom end of the protection bracket (3) arranged at equal distances through a bearing, and a dust removal brush disk (8) is fixedly arranged on the inner side of the symmetrically arranged protection rotating disk (7), and after the protection bracket (3) moves to the top of the storage box (1) following the protection flap (2), the protection rotating disk (7) and the dust removal brush disk (8) on the left and right sides of the bottom end of the protection bracket (3) enter the line inlet slot (6).

3. A resistance tester for cable conductors according to claim 2, characterized in that: The protection mechanism comprises a driving tooth block (9) and a driving rack (10), wherein the driving tooth block (9) is fixedly mounted on the outer wall of the protection turntable (7) outside the bottom end of the protection bracket (3) arranged at an equal distance, and the driving rack (10) is fixedly mounted on the left and right sides of the storage box (1) at an equal distance, and the driving rack (10) is located on the side of the inlet slot (6), and the driving rack (10) is meshedly connected to the driving tooth block (9) on the outer wall of the protection turntable (7).

4. A resistance tester for cable conductors according to claim 3, characterized in that: The protection mechanism comprises a driving shaft (23), and the driving shaft (23) is rotatably arranged at the upper end of the protection bracket (3), and the outer end of the driving shaft (23) is meshedly connected to the rotation shafts of the left and right protection rotating disks (7) inside the protection bracket (3) through a third sprocket mechanism (24), so that the left and right protection rotating disks (7) and the dust removal brush disc (8) rotate synchronously.

5. A resistance tester for cable conductors according to claim 1, characterized in that: A tester body (17) is fixedly installed at the inner center position of the protective flap (2), a cable positioning frame (18) is rotatably installed above the test cavity (4) inside the storage box (1), and the cable positioning frame (18) is used to position and install the test cable of the tester body (17), and guide slide bars (19) are fixedly installed on both the front and rear sides of the test cavity (4), and the outer wall of the guide slide bar (19) is slidably connected to the outer end of the test cross plate (20).

6. A resistance tester for cable conductors according to claim 5, characterized in that: The test cross plate (20) inside the test cavity (4) is fixedly connected to the bottom end of the cable passing through the cable positioning frame (18), and the test cross plate (20) is threadedly connected to the outer wall of the bidirectional threaded rod (13) in a left-right symmetrical manner, and the top surface of the test cross plate (20) is fixedly connected to the bottom end of the test jumper (21), and the cable conductor entering the test cavity (4) is tested through the test jumper (21).

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