A cable threading tube length detection device

Abstract

The present invention relates to the technical field of length detection, and specifically to a cable threading tube length detection device, comprising: a base, baffles are fixedly connected to the upper parts of the front and rear sides of the base, and mounting frames are installed on the upper parts of the left and right sides of the base; a rotating ring is rotatably installed on the upper part of the mounting frame, and the rotating ring is clamped and connected to the outer walls of the cable threading tube on both sides, and the rotation of the rotating ring on the mounting frame drives the rotation of the cable threading tube; one end of the cable threading tube is abutted by the structure of the abutment plate, and the measuring plate is abutted against the end of the cable threading tube by the horizontal sliding structure of the measuring plate, at this time, the distance between the measuring plate and the abutment plate is the length of the cable threading tube, and the overall length of the cable threading tube can be obtained according to the scale groove. Compared with the measurement of longer cable threading tubes, this measurement method has higher accuracy and detection efficiency than manual measurement.

Description

Technical Field

[0001] The invention relates to the technical field of length detection, in particular to a cable threading tube length detection device. Background Art

[0002] Cable threading pipe is a kind of pipe that protects cable devices, distinguishes cable functional devices, and facilitates wiring and maintenance. Generally, anti-corrosion and anti-leakage hard PVC hoses are used. In addition, iron, stainless steel, carbon steel and other pipes are used according to different usage scenarios.

[0003] In the prior art, when the length of a cable conduit is detected, it is often detected by manual measurement.

[0004] However, due to the long length of the cable conduit, it is impossible for a single person to measure it. Often, multiple people are required to measure the overall length of the cable conduit, and the accuracy and efficiency of the measurement data are low. Summary of the invention

[0005] The object of the present invention is to provide a cable threading tube length detection device to solve the problems raised by the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A cable threading tube length detection device comprises: a base, baffles are fixedly connected above the front and rear sides of the base, and mounting frames are installed above the left and right sides of the base;

[0008] A rotating ring is rotatably mounted above the mounting frame, and the rotating ring is clamped and connected to the outer walls of both sides of the cable threading tube, and the rotation of the rotating ring on the mounting frame drives the rotation of the cable threading tube;

[0009] A first screw rod, which is arranged on a side of the base, rotates synchronously with the rotating ring, and is sleeved with a plurality of first movable rings;

[0010] A fixing plate, wherein the fixing plate is fixed above the base, and the height of the fixing plate is lower than the height of the mounting frame;

[0011] A lifting rod, the lifting rod is vertically arranged in the fixed plate, the lifting rod is vertically slidably connected to the fixed plate, the number of the lifting rods is set to be several, and the number of the lifting rods corresponds to the number of the first movable rings;

[0012] Each of the first movable rings is connected to a transmission frame, and the first movable ring is hinged to the transmission frame;

[0013] A measuring plate is arranged on one side of the rotating ring, the measuring plate is horizontally slidably connected to the rotating ring, and the measuring plate abuts against the insertion end of the cable threading tube.

[0014] Furthermore, an adjusting rod is installed at the bottom of the mounting frame, and the bottom of the adjusting rod is fixedly connected to the upper surface of the base. The adjusting rod is used to adjust the upper and lower heights of the mounting frame. A mounting platform is fixedly connected to the top of the mounting frame, and a circular groove is provided in the top of the mounting platform, and a rotating groove is provided in the circular groove.

[0015] Furthermore, a rotating groove is provided in the inner wall of the circular groove of the mounting platform, and a rotating ring is installed in the circular groove of the mounting platform. The rotating ring is an annular structure with an opening on one side, and a plurality of ball blocks are fixedly connected to the side wall of the rotating ring. The ball blocks are all provided in the rotating groove, and the ball blocks are slidably connected to the rotating groove. The rotating ring is respectively installed in the mounting platforms on both sides of the base, and a support plate is fixedly connected to the left end of the rotating ring on the left side.

[0016] Furthermore, clamping rings are slidably connected to the inner walls on both sides of the rotating ring, the top of the clamping ring is set as a bevel, the inner wall of the clamping ring is set with an anti-slip pad, and a first spring is set on the outer side of the clamping ring, one end of the first spring is fixedly connected to the outer wall of the clamping ring, and the other end of the first spring is fixedly connected to the inner wall of the rotating ring, and limiting rods are respectively set on both sides of the first spring, the limiting rods are telescopic structures, and the two sides of the limiting rods are respectively fixedly connected to the clamping ring and the inner wall of the rotating ring.

[0017] Furthermore, a first transmission wheel is fixedly connected to the axis of one side of the support plate away from the rotating ring, one end of the first screw rod is fixedly connected to the second transmission wheel, the first transmission wheel and the second transmission wheel are connected by belt transmission, the other end of the first screw rod is installed on the coupling, and the end of the coupling away from the first screw rod is fixedly connected to the second screw rod, the thread directions of the first screw rod and the second screw rod are opposite, and a slide rail is arranged below the first screw rod and the second screw rod, and the slide rail is installed on the upper surface of the base.

[0018] Furthermore, the fixed plate is provided with a plurality of through holes, which are evenly distributed horizontally on the fixed plate, a first magnetic block is arranged around the through holes of the fixed plate, the lifting rod is slidably connected in the through holes of the fixed plate, a movable column is sleeved on the part of the lifting rod located above the fixed plate, a scale is arranged on the movable column, the movable column is a cavity structure with an opening at the bottom, a second magnetic block is arranged at the bottom of the movable column, the second magnetic block is magnetically connected to the first magnetic block, the magnetism of the second magnetic block is opposite to that of the first magnetic block, a second spring is arranged in the movable column, one end of the second spring is fixedly connected to the top of the lifting rod, and the other end of the second spring is fixedly connected to the top inner wall of the movable column.

[0019] Furthermore, a second connecting plate is fixedly connected to the lower part of the lifting rod, and the fixed plate is fixedly connected to the first connecting plate below the lifting rod part, the transmission frame is arranged on the first connecting plate, and the transmission frame is arranged to be an L-shaped structure, the middle part of the inflection point of the transmission frame is hingedly mounted on the first connecting plate, one side end of the transmission frame is hingedly mounted on the second connecting plate, and the other side end of the transmission frame is hingedly mounted on the connecting rod, and the other end of the connecting rod is fixedly mounted on the first movable ring, the first movable ring is sleeved on the first screw rod and is threadedly connected to the first screw rod, and a first slider is fixedly connected to the lower part of the first movable ring, the first slider is arranged in the slide rail, and the first slider is horizontally slidably connected to the slide rail.

[0020] Furthermore, a second movable ring is sleeved on the second screw rod, the second movable ring is threadedly connected to the second screw rod, a second slider is fixedly connected to the lower part of the second movable ring, the second slider is arranged on the right side of the slide rail, the second slider is horizontally slidably connected to the slide rail, a connecting frame is fixedly connected to the second movable ring, the connecting frame is arranged in an L-shape, a measuring plate is fixedly connected to the upper end of the connecting frame, the measuring plate abuts against the end of the cable threading tube, a pointer is fixedly connected to the side of the connecting frame facing the baffle, and scale grooves are provided at corresponding positions of the baffle and the pointer.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The present invention measures one end of the cable threading tube through the structure of the abutment plate, and the horizontal sliding structure of the measuring plate makes the measuring plate abut against the end of the cable threading tube. At this time, the distance between the measuring plate and the abutment plate is the length of the cable threading tube. The overall length of the cable threading tube can be obtained according to the scale groove. Compared with the measurement of a longer cable threading tube, this measurement method has higher accuracy and detection efficiency than manual measurement;

[0023] 2. The cable threading tube is clamped and fixed on the rotating ring by a clamp ring. When the rotating ring rotates on the mounting table, the cable threading tube is driven to rotate, and the rotating ring rotates synchronously with the first screw rod through the transmission structure of the first transmission wheel and the second transmission wheel, so that the first movable ring controls the transmission frame to flip, so that the lifting rod moves upward, and under the elastic force of the first spring, the movable column always contacts the lower surface of the side wall of the column cable threading tube. During the synchronous rotation of the cable threading tube, when the side wall of the cable threading tube is uneven or tilted, the position of the movable column and the lifting rod below this part changes, which is different from the position change between other movable columns and lifting rods. The position and deviation value here are recorded by the sensor, which is convenient for subsequent correction of the cable threading tube;

[0024] 3. Through the synchronous rotation of the first screw rod and the second screw rod, the measuring plate moves toward the end of the cable threading tube during the rotation of the cable threading tube until the measuring plate contacts the end of the cable threading tube. At this time, the overall length of the cable threading tube is obtained according to the direction of the pointer in the scale groove. At the same time, the measurement is completed. After the measurement is completed, the first screw rod is controlled to rotate in the opposite direction, so that the measuring plate slides to the right to the farthest distance, and the lifting rod drives the movable column to slide downward to reset, so as to facilitate and quickly detect multiple groups of cable threading tubes. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0026] Figure 2 It is a schematic diagram of the internal structure of the baffle of the present invention;

[0027] Figure 3 For the present invention Figure 2 The enlarged structural diagram at A in the middle;

[0028] Figure 4 It is a cross-sectional structural schematic diagram of the present invention;

[0029] Figure 5 For the present invention Figure 4 The enlarged structural diagram at B in the middle;

[0030] Figure 6 It is a schematic diagram of the side cross-section structure of the rotating ring of the present invention;

[0031] Figure 7 For the present invention Figure 6 The enlarged structural diagram at C in the middle;

[0032] Figure 8 It is a schematic diagram of the cross-sectional structure of the rotating ring of the present invention;

[0033] Fig. 9 For the present invention Figure 8 The enlarged structural diagram at D in the middle;

[0034] Fig.10 It is a schematic diagram of the overall cross-sectional structure of the present invention;

[0035] Fig.11 It is a schematic diagram of the cross-sectional structure of the measuring plate of the present invention.

[0036] In the figure: 1, base; 11, baffle; 12, scale groove; 2, mounting frame; 21, adjustment rod; 22, mounting table; 23, rotating groove; 3, rotating ring; 31, ball block; 32, abutment plate; 33, clamping ring; 34, anti-skid pad; 35, first spring; 36, limit rod; 4, first screw rod; 41, first transmission wheel; 42, second transmission wheel; 43, belt; 44, second screw rod; 45, coupling; 5, slide rail; 6, fixed plate; 61, first magnetic block; 62, first connecting plate; 7, lifting rod; 71, second connecting plate; 72, movable column; 73, second magnetic block; 74, second spring; 8, transmission frame; 81, connecting rod; 82, first movable ring; 83, first slider; 9, measuring plate; 91, connecting frame; 92, pointer; 93, second movable ring; 94, second slider. DETAILED DESCRIPTION

[0037] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in an exemplary manner in conjunction with the accompanying drawings.

[0038] See also Figures 1 to 11 The present invention provides a technical solution: a cable threading tube length detection device, comprising a base 1, a baffle 11 is fixedly connected to the upper part of the front and rear sides of the base 1, and a mounting frame 2 is installed on the upper part of the left and right sides of the base 1;

[0039] The cable threading tube is installed above the base 1 through the structure of the mounting frame 2, and the cable threading tube is protected during the detection work through the structure of the baffle 11.

[0040] A rotating ring 3 is rotatably mounted above the mounting frame 2, and the rotating ring 3 is clamped and connected to the outer walls of both sides of the cable threading tube. The rotation of the rotating ring 3 on the mounting frame 2 drives the rotation of the cable threading tube;

[0041] After the rotating ring 3 clamps the cable threading tube, the rotating ring 3 rotates above the mounting frame 2 so that the cable threading tube rotates on the mounting frame 2 .

[0042] A first screw rod 4, wherein the first screw rod 4 is disposed on a side of the base 1, the first screw rod 4 rotates synchronously with the rotating ring 3, and a plurality of first movable rings 82 are sleeved on the first screw rod 4;

[0043] During the rotation process, the rotating ring 3 drives the first screw rod 4 to rotate. By controlling the rotating ring 3 to rotate back and forth, the first movable ring 82 is made to slide back and forth horizontally on the first screw rod 4 .

[0044] A fixing plate 6, wherein the fixing plate 6 is fixed above the base 1, and the height of the fixing plate 6 is lower than the height of the mounting frame 2;

[0045] A lifting rod 7, wherein the lifting rod 7 is vertically arranged in the fixing plate 6, the lifting rod 7 is vertically slidably connected to the fixing plate 6, and the number of the lifting rods 7 is set to be several, and the number of the lifting rods 7 corresponds to the number of the first movable rings 82;

[0046] By sliding the lifting rods 7 up and down on the fixed plate 6, when the first movable ring 82 slides horizontally, the lifting rods 7 are controlled to slide up and down, so that a plurality of lifting rods 7 can detect the diameter length of each part of the cable threading tube.

[0047] Each of the first movable rings 82 is connected to a transmission frame 8, and the first movable ring 82 is hinged to the transmission frame 8;

[0048] The movement of the first movable ring 82 drives the transmission frame 8 to flip, so that the transmission frame 8 drives the lifting rod 7 to slide up and down when flipping.

[0049] The measuring plate 9 is arranged at one side of the rotating ring 3, the measuring plate 9 is horizontally slidably connected to the rotating ring 3, and the measuring plate 9 abuts against the insertion end of the cable threading tube.

[0050] The rotation of the first screw rod 4 controls the measuring plate 9 to move in the opposite direction to the cable threading tube. After the measuring plate 9 abuts against the end of the cable threading tube, the overall length of the cable threading tube is detected.

[0051] An adjusting rod 21 is installed below the mounting frame 2 . The lower part of the adjusting rod 21 is fixedly connected to the upper surface of the base 1 . The adjusting rod 21 is used to adjust the upper and lower heights of the mounting frame 2 .

[0052] The upper and lower heights of the mounting frame 2 are controlled by the adjusting rod 21 so as to adjust the upper and lower heights of the mounting frame 2 according to the diameter of the cable threading tube, thereby ensuring that the lifting rod 7 has movable space under the cable threading tube.

[0053] A mounting platform 22 is fixedly connected to the top of the mounting frame 2 . A circular notch is provided in the top of the mounting platform 22 . A rotation groove 23 is provided in the circular notch.

[0054] A rotating groove 23 is provided in the inner wall of the circular groove of the mounting platform 22, and a rotating ring 3 is installed in the circular groove of the mounting platform 22. The rotating ring 3 is an annular structure with an opening on one side, and a plurality of ball blocks 31 are fixedly connected to the side wall of the rotating ring 3. The ball blocks 31 are all provided in the rotating groove 23, and the ball blocks 31 are slidably connected to the rotating groove 23. The rotating ring 3 is respectively installed in the mounting platforms 22 on both sides of the base 1, and a support plate 32 is fixedly connected to the left end of the rotating ring 3 on the left side.

[0055] The rotating ring 3 is arranged in the rotating groove 23 through the ball block 31. The ball block 31 is installed on the mounting platform 22. The ball block 31 slides in the rotating groove 23, so that the rotating ring 3 is rotatably connected to the mounting platform 22 without being separated from the mounting platform 22. When installing the cable threading tube, the opening of the rotating ring 3 is facing upwards, and the cable threading tube is inserted from the top of the rotating ring 3, so that the end of the cable threading tube is abutted against the abutment plate 32.

[0056] A clamping ring 33 is slidably connected to the inner walls of both sides of the rotating ring 3, the top of the clamping ring 33 is set as a hypotenuse, and an anti-slip pad 34 is set on the inner wall of the clamping ring 33. A first spring 35 is set on the outer side of the clamping ring 33, one end of the first spring 35 is fixedly connected to the outer wall of the clamping ring 33, and the other end of the first spring 35 is fixedly connected to the inner wall of the rotating ring 3, and limiting rods 36 are respectively set on both sides of the first spring 35. The limiting rod 36 is a telescopic structure, and the two sides of the limiting rod 36 are respectively fixedly connected to the clamping ring 33 and the inner wall of the rotating ring 3.

[0057] The structure of the clamping ring 33 is used to clamp the two ends of the cable threading tube inserted into the rotating ring 3. The structure of the anti-slip pad 34 prevents the clamping ring 33 and the cable threading tube from loosening, which causes the rotating ring 3 to be unable to effectively drive the cable threading tube to rotate. Under the elastic force of the first spring 35, when there is no external force, the clamping ring 33 always has an inward movement tendency, that is, the clamping state of the cable threading tube by the clamping ring 33 is maintained. The structure of the limit rod 36 limits the sliding distance and direction of the clamping ring 33 in the rotating ring 3 to prevent the clamping ring 33 from tilting and thus failing to effectively clamp the cable threading tube, or the cable threading tube from being unable to be inserted into the rotating ring 3. The top of the clamping ring 33 is set as a bevel to facilitate the insertion of the cable threading tube into the clamping ring 33 from above.

[0058] The first transmission wheel 41 is fixedly connected to the axis of one side of the support plate 32 away from the rotating ring 3, and one end of the first screw rod 4 is fixedly connected to the second transmission wheel 42. The first transmission wheel 41 and the second transmission wheel 42 are connected by a belt 43. The other end of the first screw rod 4 is installed on a coupling 45, and the end of the coupling 45 away from the first screw rod 4 is fixedly connected to the second screw rod 44. The thread directions of the first screw rod 4 and the second screw rod 44 are opposite. A slide rail 5 is arranged below the first screw rod 4 and the second screw rod 44, and the slide rail 5 is installed on the upper surface of the base 1.

[0059] Through the structure of the abutment plate 32, one end of the cable threading tube is abutted, so that the cable threading tube will not move when the length of the cable threading tube is detected. When the rotating ring 3 drives the cable threading tube to rotate, the first transmission wheel 41 rotates, and under the transmission action of the belt 43, the second transmission wheel 42 rotates in the same direction as the first transmission wheel 41, so that the first screw rod 4 rotates, and under the connection of the coupling 45, the second screw rod 44 rotates at the same speed as the first screw rod 4, and because the thread direction of the second screw rod 44 is opposite to the thread direction of the first screw rod 4, the second screw rod 44 rotates in the opposite direction.

[0060] The fixed plate 6 is provided with a plurality of through holes, which are evenly distributed horizontally on the fixed plate 6. A first magnetic block 61 is provided around the upper part of the through holes of the fixed plate 6. The lifting rod 7 is slidably connected in the through holes of the fixed plate 6. The part of the lifting rod 7 located above the fixed plate 6 is sleeved with a movable column 72. A scale is provided on the movable column 72. The movable column 72 is a cavity structure with an opening at the lower part. A second magnetic block 73 is provided at the bottom of the movable column 72. The second magnetic block 73 is magnetically connected to the first magnetic block 61. The magnetism of the second magnetic block 73 is opposite to that of the first magnetic block 61. A second spring 74 is provided in the movable column 72. One end of the second spring 74 is fixedly connected to the upper part of the lifting rod 7, and the other end of the second spring 74 is fixedly connected to the top inner wall of the movable column 72.

[0061] A plurality of through holes are provided on the fixed plate 6, so that the lifting rod 7 can be vertically slidably connected on the fixed plate 6, and because a second magnetic block 73 is provided below the movable column 72, and a first magnetic block 61 is provided above and around the through hole, and the first magnetic block 61 and the second magnetic block 73 are magnetically connected, so that in the initial state, the movable column 72 is kept at the lowest point under the magnetic attraction of the first magnetic block 61 and the second magnetic block 73, and when the lifting rod 7 rises upward, its upward force is greater than the magnetic force of the magnetic attraction, so that the lifting rod 7 pushes the movable column 72 upward;

[0062] Under the elastic force of the second spring 74, a movable space is reserved between the lifting rod 7 and the movable column 72, and after the lifting rod 7 pushes the movable column 72 upward and the first magnetic block 61 and the second magnetic block 73 are separated, the movable column 72 always has a movement tendency to move above the lifting rod 7. After the lifting rod 7 pushes the movable column 72 up, the top of the movable column 72 always abuts against the bottom of the side wall of the cable threading tube. When the side wall of the cable threading tube is uneven, the movable column 72 at this position will change its up and down position relative to other movable columns 72. By setting a sensor on the baffle 11, it can be determined whether the movable column 72 has changed its position, so as to accurately detect the position where the diameter of the cable threading tube changes and record it, so that after the detection is completed, the portion of the cable threading tube can be corrected.

[0063] A second connecting plate 71 is fixedly connected to the lower part of the lifting rod 7, and a first connecting plate 62 is fixedly connected to the fixing plate 6 located below the part of the lifting rod 7. The transmission frame 8 is arranged on the first connecting plate 62, and the transmission frame 8 is arranged to be an L-shaped structure. The middle part of the inflection point of the transmission frame 8 is hingedly mounted on the first connecting plate 62, and one side end of the transmission frame 8 is hingedly mounted on the second connecting plate 71, and the other side end of the transmission frame 8 is hingedly mounted on the connecting rod 81. The other end of the connecting rod 81 is fixedly mounted on the first movable ring 82, and the first movable ring 82 is sleeved on the first screw rod 4 and is threadedly connected to the first screw rod 4. A first slider 83 is fixedly connected to the lower part of the first movable ring 82, and the first slider 83 is arranged in the slide rail 5, and the first slider 83 is horizontally slidably connected to the slide rail 5.

[0064] When the first screw rod 4 rotates, since the first screw rod 4 is threadedly connected with the first movable ring 82, and the first slider 83 slides horizontally in the slide rail 5, the rotation of the first movable ring 82 is limited, so that the first movable ring 82 slides horizontally on the first screw rod 4, and drives the transmission frame 8 to flip through the connecting rod 81. Since the middle part of the transmission frame 8 is hinged with the first connecting plate 62, when one side of the transmission frame 8 flips, the other side of the transmission frame 8 drives the lifting rod 7 to rise, and after the rotating ring 3 drives the cable threading tube to rotate several circles, the first screw rod 4 is controlled by the motor to rotate in the opposite direction, so that the first movable ring 82 slides in the opposite direction, and the lifting rod 7 is controlled to slide downward to reset until the first magnetic block 61 and the second magnetic block 73 are adsorbed together again.

[0065] A second movable ring 93 is sleeved on the second screw rod 44, and the second movable ring 93 is threadedly connected to the second screw rod 44. A second slider 94 is fixedly connected to the lower part of the second movable ring 93, and the second slider 94 is arranged on the right side of the slide rail 5. The second slider 94 is horizontally slidably connected to the slide rail 5. A connecting frame 91 is fixedly connected to the second movable ring 93, and the connecting frame 91 is arranged in an L shape. A measuring plate 9 is fixedly connected to the upper end of the connecting frame 91, and the measuring plate 9 is abutted against the end of the cable threading tube. A pointer 92 is fixedly connected to the connecting frame 91 on the side facing the baffle 11, and scale grooves 12 are provided at corresponding positions of the baffle 11 and the pointer 92.

[0066] When the first screw rod 4 rotates, the second screw rod 44 rotates in the opposite direction, and the sliding of the second slider 94 in the slide rail 5 limits the rotation of the second movable ring 93, so that the second movable ring 93 synchronously slides in the opposite direction to the first movable ring 82, so that the measuring plate 9 moves in the direction of the cable threading tube until the measuring plate 9 abuts against the end of the cable threading tube, and in the process of the movement of the measuring plate 9, the pointer 92 moves with it, and the position of the pointer 92 after the measuring plate 9 stops moving is recorded. The scale pointed to by the pointer on the scale groove 12 is the length of the cable threading tube. After the measurement is completed, the second screw rod 44 rotates in the opposite direction, so that the second movable ring 93 drives the measuring plate 9 to move in the opposite direction to the farthest distance, which is the initial state.

[0067] Any omission, modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A cable threading tube length detection device, characterized in that: include: A base (1), baffles (11) being fixedly connected above the front and rear sides of the base (1), and mounting frames (2) being installed above the left and right sides of the base (1); A rotating ring (3) is rotatably mounted above the mounting frame (2), the rotating ring (3) being clamped and connected to the outer walls of both sides of the cable threading tube, and the rotation of the rotating ring (3) on the mounting frame (2) drives the rotation of the cable threading tube; a first screw rod (4), the first screw rod (4) being arranged on a side of the base (1), the first screw rod (4) rotating synchronously with the rotating ring (3), and a plurality of first movable rings (82) being sleeved on the first screw rod (4); A fixing plate (6), the fixing plate (6) being fixed above the base (1), the height of the fixing plate (6) being lower than the height of the mounting frame (2); A lifting rod (7), the lifting rod (7) being vertically arranged in the fixing plate (6), the lifting rod (7) being vertically slidably connected to the fixing plate (6), the number of the lifting rods (7) being set to be a plurality, and the number of the lifting rods (7) corresponding to the number of the first movable rings (82); Each of the first movable rings (82) is connected to a transmission frame (8), and the first movable ring (82) is hinged to the transmission frame (8); a measuring plate (9), the measuring plate (9) being arranged on one side of the rotating ring (3), the measuring plate (9) being horizontally slidably connected to the rotating ring (3), and the measuring plate (9) being in contact with an insertion end of the cable threading tube; An adjusting rod (21) is installed below the mounting frame (2), the adjusting rod (21) is fixedly connected to the upper surface of the base (1) at the bottom, the adjusting rod (21) is used to adjust the vertical height of the mounting frame (2), the mounting frame (2) is fixedly connected to a mounting platform (22) at the top, a circular notch is provided at the top of the mounting platform (22), and a rotation groove (23) is provided in the circular notch; A rotating groove (23) is provided in the inner wall of the circular groove of the mounting platform (22), a rotating ring (3) is installed in the circular groove of the mounting platform (22), the rotating ring (3) is an annular structure with an opening on one side, a plurality of ball blocks (31) are fixedly connected to the side wall of the rotating ring (3), the ball blocks (31) are all arranged in the rotating groove (23), the ball blocks (31) are slidably connected to the rotating groove (23), the rotating ring (3) is respectively installed in the mounting platforms (22) on both sides of the base (1), and a left end of the rotating ring (3) on the left side is fixedly connected to a stop plate (32); A clamping ring (33) is slidably connected to the inner walls of both sides of the rotating ring (3); the upper side of the clamping ring (33) is provided with a bevel; an anti-slip pad (34) is provided on the inner wall of the clamping ring (33); a first spring (35) is provided on the outer side of the clamping ring (33); one end of the first spring (35) is fixedly connected to the outer wall of the clamping ring (33); the other end of the first spring (35) is fixedly connected to the inner wall of the rotating ring (3); limiting rods (36) are respectively provided on both sides of the first spring (35); the limiting rods (36) are of a telescopic structure; the two sides of the limiting rod (36) are respectively fixedly connected to the clamping ring (33) and the inner wall of the rotating ring (3); A first transmission wheel (41) is fixedly connected to the axis of one side of the stop plate (32) away from the rotating ring (3); one end of the first screw rod (4) is fixedly connected to the second transmission wheel (42); the first transmission wheel (41) and the second transmission wheel (42) are connected by a belt (43); the other end of the first screw rod (4) is mounted on a coupling (45); an end of the coupling (45) away from the first screw rod (4) is fixedly connected to the second screw rod (44); the thread directions of the first screw rod (4) and the second screw rod (44) are opposite; a slide rail (5) is arranged below the first screw rod (4) and the second screw rod (44); the slide rail (5) is mounted on the upper surface of the base (1); The fixed plate (6) is provided with a plurality of through holes, the through holes being evenly distributed horizontally on the fixed plate (6), a first magnetic block (61) is provided around the upper part of the through holes of the fixed plate (6), the lifting rod (7) is slidably connected in the through holes of the fixed plate (6), a movable column (72) is sleeved on the part of the lifting rod (7) located above the fixed plate (6), a scale is provided on the movable column (72), the movable column (72) is a cavity structure with an opening at the lower part, a second magnetic block (73) is provided at the bottom of the movable column (72), the second magnetic block (73) is magnetically connected to the first magnetic block (61), the magnetic properties of the second magnetic block (73) are opposite to those of the first magnetic block (61), a second spring (74) is provided in the movable column (72), one end of the second spring (74) is fixedly connected to the upper part of the lifting rod (7), and the other end of the second spring (74) is fixedly connected to the top inner wall of the movable column (72); A second connecting plate (71) is fixedly connected below the lifting rod (7); a first connecting plate (62) is fixedly connected below the fixed plate (6) located below the lifting rod (7); the transmission frame (8) is arranged on the first connecting plate (62); the transmission frame (8) is arranged in an L-shaped structure; a middle part of the inflection point of the transmission frame (8) is hingedly mounted on the first connecting plate (62); one end of the transmission frame (8) is hingedly mounted on the second connecting plate (71); the other end of the transmission frame (8) is hingedly mounted on a connecting rod (81); the other end of the connecting rod (81) is fixedly mounted on the first movable ring (82); the first movable ring (82) is sleeved on the first screw rod (4) and is threadedly connected to the first screw rod (4); a first slider (83) is fixedly connected below the first movable ring (82); the first slider (83) is arranged in the slide rail (5); and the first slider (83) is horizontally slidably connected to the slide rail (5).

2. The cable threading tube length detection device according to claim 1, characterized in that: A second movable ring (93) is sleeved on the second screw rod (44), the second movable ring (93) is threadedly connected to the second screw rod (44), a second slider (94) is fixedly connected below the second movable ring (93), the second slider (94) is arranged inside the right side of the slide rail (5), the second slider (94) is horizontally slidably connected to the slide rail (5), a connecting frame (91) is fixedly connected to the second movable ring (93), the connecting frame (91) is arranged in an L-shape, a measuring plate (9) is fixedly connected to the upper end of the connecting frame (91), the measuring plate (9) is in contact with the end of the cable threading tube, a pointer (92) is fixedly connected to the side of the connecting frame (91) facing the baffle plate (11), and a scale groove (12) is provided at the corresponding positions of the baffle plate (11) and the pointer (92).

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