A cable meter

Abstract

The present invention provides a cable meter used in the field of measuring equipment, comprising a clamping wheel assembly, a measuring wheel assembly and an encoder, the measuring wheel assembly comprising a measuring wheel, a covering mechanism being sleeved on the circumferential outer side of the measuring wheel, a wheel holster being sleeved on the circumferential outer side of the covering mechanism, the covering mechanism comprising a contact ring, elastic arc plates and execution arc plates being provided on both sides of the contact ring, a ball being provided at one end of the execution arc plate, an execution mechanism being further provided on the measuring wheel assembly, the clamping wheel assembly comprising a clamping seat and a clamping wheel rotatably connected to the clamping seat, the clamping seat being slidably connected to a tensioning force arm, and a tensioning spring being provided on the clamping seat; the present invention can synchronously adjust the curvature of the elastic arc plate according to characteristics such as the thickness and hardness of the cable through the cooperation of the covering mechanism and the execution mechanism, so that the wheel holster can better fit the cable surface, increase friction, reduce slippage, and thus significantly improve measurement accuracy.

Description

Technical Field

[0001] The present application relates to the field of measuring equipment, and in particular to a cable meter. Background Art

[0002] In the cable manufacturing process, accurate cable length measurement is critical to ensuring product quality and controlling costs. For example, during mass production, cables must be cut to the length specified by the customer. Inaccurate measurement can result in products that are either too long or too short, wasting resources and reducing customer satisfaction.

[0003] Existing cable meter counters have numerous drawbacks. Firstly, measurement accuracy is significantly affected by the cable's surface condition. The cable surface may be uneven, greasy, or contaminated. This can lead to unstable friction between the meter's measuring wheel and the cable, causing slippage and resulting in measurement errors. Secondly, the contact method between the wheel and cable of traditional meter counters is limited, making it difficult to effectively adjust to varying cable characteristics (such as thickness, hardness, and surface material). For thinner or softer cables, this may not provide sufficient friction. For thicker or harder cables, excessive pressure may damage the cable surface. Furthermore, existing meter counters lack flexible tension adjustment, making them difficult to adapt to varying measurement conditions. When cable tension changes, the clamping force and contact state cannot be adjusted promptly, affecting measurement accuracy and stability.

[0004] For this purpose, a cable meter is proposed. Summary of the Invention

[0005] The purpose of the present application is to solve the technical problem that the existing meter counter is prone to slipping on the cable surface, resulting in poor cable length measurement accuracy. Compared with the existing technology, a cable meter counter is provided, including a clamping wheel assembly, a measuring wheel assembly and an encoder arranged on a base, the measuring wheel assembly including a measuring wheel, the measuring wheel is fixedly connected to the main shaft of the encoder, a covering mechanism is sleeved on the circumferential outer side of the measuring wheel, a wheel leather sleeve is sleeved on the circumferential outer side of the covering mechanism, the covering mechanism includes a contact ring, a number of elastic arc plates are fixed at equal angles on both sides of the contact ring, an execution arc plate is fixed on the arc outer side of the elastic arc plate, and a ball is rotatably connected to the end of the execution arc plate away from the elastic arc plate, and an actuator is further provided on the measuring wheel assembly, and the actuator is used to synchronously adjust the curvature of the elastic arc plate;

[0006] The base is also provided with a tensioning arm, and the clamping wheel assembly includes a clamping seat and a clamping wheel rotatably connected to the clamping seat. The clamping seat is slidably connected to the tensioning arm, one end of the clamping seat is fixed with a tensioning spring, and the other end of the tensioning spring is fixed to the base. One side of the tensioning arm is also rotatably connected to a steering roller, and the outer wall of the steering roller conflicts with the middle part of the tensioning spring. The bottom end of the tensioning arm is rotatably connected to the main shaft through a sleeve hole.

[0007] Furthermore, an assembly snap ring is fixed on the inner side of the contact ring, and an assembly groove matching the assembly snap ring is provided on the outer wall of the measuring wheel. The elastic arc plate has elastic force to drive the execution arc plate close to the measuring wheel, and the elastic arc plates on both sides of the covering mechanism are arranged in an alternating manner.

[0008] Furthermore, a vertical plate 1 and a vertical plate 2 are fixed on the base, the encoder is fixed on the vertical plate 2, and the main shaft is rotatably connected to the vertical plate 1 through a bearing.

[0009] Furthermore, an adjustment rod is fixed to one side of the clamping seat, the upper end of the tensioning spring is fixed to the adjustment rod, the tensioning arm is provided with an adjustment groove matching the adjustment rod, two sets of guide grooves are symmetrically provided on both sides of the adjustment groove, and a slider matching the guide groove is also fixed to the clamping seat;

[0010] The steering roller is rotatably connected to the bottom of the adjusting groove.

[0011] Furthermore, the main shaft is a hollow shaft structure, and the actuator includes an actuator shaft and an actuator ring. The actuator shaft is sleeved on the inner side of the main shaft, and two groups of the actuator rings are symmetrically arranged on both sides of the measuring wheel. The balls are in conflict with the side of the actuator ring away from the measuring wheel. The actuator ring is provided with a plurality of sliding sleeves 1 evenly spaced at equal angles. A sliding rod 1 matching the sliding sleeve 1 is fixed to the measuring wheel, and a return spring is fixed between the sliding sleeve 1 and the sliding rod.

[0012] One end of the execution shaft is provided with a bidirectional thread groove, a support plate is fixed to one side of the base, a ring seat is fixed in the support plate, a plurality of slide rods 2 arranged at equal angles are fixed on the ring seat, two groups of symmetrically arranged transmission rings are slidably connected to the slide rods 2, a sliding sleeve 2 matching the slide rods 2 is provided on the transmission ring, a nut seat matching the bidirectional thread groove is fixed on the inner side of the transmission ring, a toggle ring is fixed to the outer side of the circumference of the transmission ring, and a toggle groove matching the toggle ring is provided on the inner side of the execution ring.

[0013] Furthermore, the reset spring has elastic force to drive the execution ring close to the measuring wheel, one end of the main shaft is fixedly connected to the slide bar 1 on one side of the measuring wheel, and the middle of the measuring wheel is provided with an assembly through hole for inserting the slide bar 2.

[0014] Furthermore, an executive gear is fixed to one end of the executive shaft away from the bidirectional thread groove, and a driven gear meshing with the executive gear is rotatably connected to one side of the outer wall of the encoder. A connecting rod is fixed to the bottom end of the tensioning arm, and an arc-shaped groove for the connecting rod to rotate is provided on the second vertical plate. One end of the connecting rod extends through the arc-shaped groove and is fixed with an arc-shaped gear ring, and the arc-shaped gear ring is meshed with the driven gear.

[0015] Furthermore, the tensioning spring has an elastic force that drives the clamping wheel assembly close to the measuring wheel assembly, and at the same time, the tensioning spring has an elastic force that drives the tensioning arm to flip close to the base. When the tensioning arm flips close to the base, the arc-shaped gear ring drives the executing gear to rotate clockwise, and at this time, the two sets of executing rings perform a displacement action away from each other.

[0016] Furthermore, the width of the contact ring is smaller than the width of the clamping wheel, the vertical plane of the axis of the contact ring coincides with the vertical plane of the axis of the clamping wheel, the contact ring is an arc-shaped structure, the elasticity of the wheel sleeve at the elastic arc plate is greater than the elasticity at the contact ring, and the elasticity of the wheel sleeve at the contact ring is 0.

[0017] Compared with the existing technology, the advantages of this application are:

[0018] Through the cooperation of the covering mechanism and the actuator, the present invention can synchronously adjust the curvature of the elastic arc plate according to the characteristics of the cable such as the thickness and hardness, so that the wheel cover can better fit the cable surface, increase friction, reduce slipping, and thus significantly improve the measurement accuracy; the design of the tensioning spring and the tensioning arm enables the clamping wheel assembly to automatically adjust its position according to the different tensions of the cable. At the same time, through the linkage of the actuator and the tensioning arm, the contact state between the wheel cover and the cable is further optimized. Regardless of whether the cable has different thicknesses and hardnesses, or under working conditions with large tension changes, the meter can maintain good measurement performance and enhance its adaptability to different cables. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the front structure of this application;

[0020] Figure 2 This is a schematic diagram of the back structure of this application;

[0021] Figure 3 for Figure 2 A schematic diagram of the enlarged structure of the middle part A;

[0022] Figure 4 A schematic diagram of a partial explosion structure of the clamping wheel assembly and the tensioning arm proposed in this application;

[0023] Figure 5 A schematic structural diagram of the tensioning arm and its components proposed in this application;

[0024] Figure 6 Schematic diagram of the displacement direction of the clamping wheel and tensioning arm proposed in this application;

[0025] Figure 7 This is a schematic structural diagram of the measuring wheel assembly proposed in this application;

[0026] Figure 8 This is a schematic diagram of the exploded structure of the measuring wheel assembly proposed in this application;

[0027] Figure 9 A schematic structural diagram of the coating mechanism proposed in this application;

[0028] Figure 10 for Figure 9 A schematic diagram of the enlarged structure of the middle part B;

[0029] Figure 11 This is a schematic diagram of the exploded structure of the actuator proposed in this application;

[0030] Figure 12 This is a schematic diagram of the exploded structure of the transmission ring and ring seat proposed in this application;

[0031] Figure 13 This is a schematic diagram of the structure of the measuring wheel proposed in this application;

[0032] Figure 14 This is a schematic diagram of the cross-sectional structure of this application;

[0033] Figure 15 for Figure 14 A schematic diagram of the enlarged structure of the middle C part;

[0034] Figure 16 for Figure 14 Schematic diagram of the enlarged structure of part D in the middle.

[0035] Description of the numbers in the figure:

[0036] 1. Base; 11. Support plate; 12. Vertical plate 1; 13. Vertical plate 2; 131. Arc groove; 2. Tensioning arm; 21. Adjustment groove; 22. Guide groove; 23. Steering roller; 24. Connecting rod; 25. Arc gear ring; 26. Hole; 3. Clamping wheel assembly; 31. Clamping wheel; 32. Clamping seat; 321. Slider; 322. Adjustment rod; 4. Measuring wheel assembly; 41. Measuring wheel; 411. Assembly slot; 412. Slider 1; 413. Return spring; 414. Assembly through hole; 42. Covering mechanism; 421. Contact ring; 422. Assembly snap ring; 423. Elastic arc plate; 424. Actuating arc plate; 425. Ball bearing; 43. Wheel leather sleeve; 5. Tensioning spring; 6. Encoder; 61. Main shaft; 62. Driven gear; 7. Actuator; 71. Actuating shaft; 711. Bidirectional thread groove; 72. Actuating gear; 73. Ring seat; 731. Slide rod 2; 74. Actuating ring; 741. Slide sleeve 1; 742. Toggle slide groove; 75. Transmission ring; 751. Toggle ring; 752. Slide sleeve 2; 753. Nut seat. DETAILED DESCRIPTION

[0037] The embodiments will be combined with the drawings in the specification to clearly and completely describe the technical solution of this application. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making any creative work shall fall within the scope of protection of this application.

[0038] Example:

[0039] The purpose of the present invention is to provide a cable meter, aiming to overcome the problems of low measurement accuracy and poor adaptability of existing cable meter. Through the structural design of the measuring wheel assembly 4 and the clamping wheel assembly 3, the adaptability and measurement accuracy of the meter to different cables are improved, the accuracy and stability of the measurement results are ensured, and at the same time, damage to the cable surface is reduced, thereby extending the service life of the meter. For details, please refer to Figures 1-16 , including a clamping wheel assembly 3, a measuring wheel assembly 4 and an encoder 6 arranged on a base 1.

[0040] Please refer to the Figure 7 The measuring wheel assembly 4 includes a measuring wheel 41, which is fixedly connected to the main shaft 61 of the encoder 6. When the cable drives the measuring wheel 41 to rotate during transportation, the main shaft 61 rotates synchronously therewith. The encoder 6 converts the rotation information of the main shaft 61 into an electrical signal. By processing and analyzing the electrical signal, the length of the cable can be accurately obtained.

[0041] Specifically, the encoder 6 in the present cable meter is a rotary encoder, and its working principle is based on electromagnetic induction or photoelectric induction. When the cable is in the process of transportation, friction is generated between it and the measuring wheel 41, thereby driving the measuring wheel 41 to rotate. Since the measuring wheel 41 is fixedly connected to the main shaft 61 of the encoder 6, the main shaft 61 will rotate synchronously with the measuring wheel 41. The rotation of the main shaft 61 will drive the photoelectric or electromagnetic rotation of the code disk inside the encoder 6. According to the above working principle, the encoder 6 will convert the rotation information into a series of pulse signals. The number and frequency of the pulses are related to the rotation angle and speed of the measuring wheel 41. The pulse signals output by the encoder 6 will be transmitted to the subsequent signal processing circuit. The signal processing circuit will count, filter, amplify and other processing on these pulse signals, and then calculate the distance the cable has moved, that is, the length of the cable, based on the actual contact circumference of the measuring wheel 41 and the number of pulses.

[0042] See also Figure 7-11 The outer side of the circumference of the measuring wheel 41 is sleeved with a covering mechanism 42, and the outer side of the circumference of the covering mechanism 42 is sleeved with a wheel leather cover 43. The covering mechanism 42 includes a contact ring 421, and an assembly snap ring 422 is fixed to the inner side of the contact ring 421. The outer wall of the measuring wheel 41 is provided with an assembly slot 411 matching the assembly snap ring 422, which ensures a firm connection between the covering mechanism 42 and the measuring wheel 41 and is convenient for disassembly and replacement when needed.

[0043] A number of elastic arc plates 423 are fixed at equal angles on both sides of the contact ring 421. The elastic arc plates 423 have elastic force that drives the execution arc plate 424 close to the measuring wheel 41. The elastic arc plates 423 on both sides of the covering mechanism 42 are staggered. The staggered arrangement design enables the elastic arc plates 423 to distribute pressure more evenly, thereby improving the wrapping effect on the cable. An execution arc plate 424 is fixed to the outer side of the arc of the elastic arc plate 423. The end of the execution arc plate 424 away from the elastic arc plate 423 is rotatably connected to a ball 425. The setting of the ball 425 can reduce the friction between the execution arc plate 424 and the actuator 7, thereby improving the flexibility of adjustment.

[0044] See also Figures 11-16 The measuring wheel assembly 4 is also provided with an actuator 7, which is used to synchronously adjust the curvature of the elastic arc plate 423. The actuator 7 includes an actuator shaft 71 and an actuator ring 74. The actuator shaft 71 is sleeved on the inner side of the main shaft 61. Two sets of actuator rings 74 are symmetrically arranged on both sides of the measuring wheel 41. The ball 425 conflicts with the side of the actuator ring 74 away from the measuring wheel 41. The actuator ring 74 is provided with a plurality of sliding sleeves 741 evenly distributed at equal angles. A sliding rod 412 matching the sliding sleeve 741 is fixed to the measuring wheel 41. A reset spring 413 is fixed between the sliding sleeve 741 and the sliding rod 412. The reset spring 413 has an elastic force that drives the actuator ring 74 close to the measuring wheel 41.

[0045] Please refer to the Figure 11-12 , one end of the execution shaft 71 is provided with a bidirectional thread groove 711, a support plate 11 is fixed to one side of the base 1, a ring seat 73 is fixed inside the support plate 11, and a number of slide rods 731 with equal angles are fixed on the ring seat 73, and two groups of symmetrically arranged transmission rings 75 are slidably connected to the slide rods 731, and a slide sleeve 752 matching the slide rods 731 is provided on the transmission ring 75. A nut seat 753 matching the bidirectional thread groove 711 is fixed on the inner side of the transmission ring 75, and a toggle ring 751 is fixed to the outer side of the circumference of the transmission ring 75. The inner side of the execution ring 74 is provided with a toggle slide groove 742 matching the toggle ring 751.

[0046] An executive gear 72 is fixed to one end of the executive shaft 71 away from the bidirectional thread groove 711, and a driven gear 62 meshing with the executive gear 72 is rotatably connected to one side of the outer wall of the encoder 6. A connecting rod 24 is fixed to the bottom end of the tensioning arm 2, and an arcuate groove 131 for the connecting rod 24 to rotate is provided on the vertical plate 13. One end of the connecting rod 24 extends through the arcuate groove 131 and is fixed with an arcuate gear ring 25, which meshes with the driven gear 62.

[0047] Please refer to the Figure 2-Figure 5 When the cam 32 is in the unlock position, the cam 321 is unlocked and the cam 322 is unlocked, so that the cam 322 can be unlocked and the cam 322 can be unlocked.

[0048] The other end of the tensioning spring 5 is fixed on the base 1. The tensioning spring 5 has an elastic force that drives the clamping wheel assembly 3 to approach the measuring wheel assembly 4. At the same time, the tensioning spring 5 has an elastic force that drives the tensioning arm 2 to flip and approach the base 1. The bottom end of the tensioning arm 2 is rotatably connected to the main shaft 61 through the sleeve hole 26. When the tensioning arm 2 flips and approaches the base 1, the arc-shaped gear ring 25 drives the executive gear 72 to rotate clockwise. At this time, the two sets of executive rings 74 perform a displacement action away from each other.

[0049] Furthermore, a vertical plate 12 and a vertical plate 2 13 are fixed on the base 1, the encoder 6 is fixed on the vertical plate 2 13, and the main shaft 61 is rotatably connected to the vertical plate 12 through a bearing. The main shaft 61 is a hollow shaft structure, and one end of the main shaft 61 is fixedly connected to the slide rod 1 412 on one side of the measuring wheel 41. The middle part of the measuring wheel 41 is provided with an assembly through hole 414 for inserting the slide rod 2 731. The main shaft 61 with a hollow shaft structure not only reduces the overall weight, but also provides space for the installation of the execution shaft 71.

[0050] The width of the contact ring 421 is smaller than the width of the clamping wheel 31, and the vertical plane of the axis of the contact ring 421 coincides with the vertical plane of the axis of the clamping wheel 31. The contact ring 421 is an arc-shaped structure. The elasticity of the wheel cover 43 at the elastic arc plate 423 is greater than the elasticity at the contact ring 421. The elasticity of the wheel cover 43 at the contact ring 421 is 0. This elastic distribution design enables the wheel cover 43 to maintain a fixed wheel radius at the contact ring 421, reducing the calculation error of the encoder 6, and at the same time being able to better adapt to the shape of the cable and improve the measurement accuracy, while maintaining elasticity at the covering mechanism 42, and utilizing this elasticity to provide stable friction for contact with both sides of the cable.

[0051] During actual use, when the cable passes between the clamping wheel 31 and the measuring wheel 41, the elastic force of the tensioning spring 5 causes the clamping wheel assembly 3 to approach the measuring wheel assembly 4, thereby clamping the cable. During the movement, the cable drives the measuring wheel 41 to rotate, and the measuring wheel 41 drives the encoder 6 to work through the main shaft 61. The encoder 6 converts the rotation information into an electrical signal. After signal processing and analysis, the cable length information can be obtained.

[0052] When the thickness or hardness of the cable changes, the elastic force of the tensioning spring 5 will cause the tensioning arm 2 to flip. When the tensioning arm 2 flips, the driven gear 62 is driven to rotate through the connecting rod 24 and the arc gear ring 25, and the driven gear 62 drives the executing gear 72 to rotate. The executing gear 72 drives the executing shaft 71 to rotate. The bidirectional thread groove 711 of the executing shaft 71 causes the two sets of transmission rings 75 to move toward or away from each other. The transmission ring 75 drives the executing ring 74 to move through the toggle ring 751 and the toggle slide groove 742. When the executing ring 74 moves, the elastic arc plate 423 is squeezed or released by the ball 425, thereby adjusting the curvature of the elastic arc plate 423, so that the wheel leather cover 43 can better fit the cable surface. According to cables of different diameters or cables with poor diameter uniformity, the tension of the tensioning spring 5 can be used to achieve autonomous adaptive covering adjustment, providing more effective contact friction for the contact action between the measuring wheel 41 and the cable surface, thereby avoiding slipping and ensuring measurement accuracy.

[0053] The adjustment action of the execution shaft 71 in the present invention is linked to the tension of the tensioning arm 2 by the tensioning spring 5. At the same time, the rotation action of the execution shaft 71 is independent of the rotation action of the measuring wheel 41. Therefore, during the advancement of the cable, the cable can be autonomously adjusted according to the change in the cable diameter without stopping, thereby further improving the measurement efficiency and measurement continuity.

[0054] Through the cooperation of the covering mechanism 42 and the actuator 7, the present invention can synchronously adjust the curvature of the elastic arc plate 423 according to the thickness and hardness of the cable, so that the wheel cover 43 can better fit the cable surface, increase friction, reduce slippage, and thus significantly improve measurement accuracy.

[0055] The design of the tensioning spring 5 and the tensioning arm 2 enables the clamping wheel assembly 3 to automatically adjust its position according to the different tensions of the cable. At the same time, the contact state between the wheel holster 43 and the cable is further optimized through the linkage between the actuator 7 and the tensioning arm 2. Regardless of the cable thickness and hardness, or under working conditions with large tension changes, the meter can maintain good measurement performance and enhance its adaptability to different cables. The elastic distribution design of the wheel holster 43 and the uniform pressure adjustment of the elastic arc plate 423 minimize the damage to the cable surface during the measurement process, avoid problems such as scratches and deformation on the cable surface caused by excessive extrusion or friction, and ensure the quality of the cable.

[0056] The above is only the best implementation method adopted by this application in combination with current actual needs, but the scope of protection of this application is not limited to this.

Claims

1. A cable meter, comprising a clamping wheel assembly (3), a measuring wheel assembly (4) and an encoder (6) arranged on a base (1), characterized in that: The measuring wheel assembly (4) includes a measuring wheel (41), the measuring wheel (41) is fixedly connected to the main shaft (61) of the encoder (6), a covering mechanism (42) is sleeved on the outer circumference of the measuring wheel (41), a wheel leather sleeve (43) is sleeved on the outer circumference of the covering mechanism (42), the covering mechanism (42) includes a contact ring (421), a plurality of elastic arc plates (423) are fixed at equal angles on both sides of the contact ring (421), an execution arc plate (424) is fixed on the outer circumference of the elastic arc plate (423), and a ball (425) is rotatably connected to the end of the execution arc plate (424) away from the elastic arc plate (423), and the measuring wheel assembly (4) is further provided with an actuator (7), and the actuator (7) is used to synchronously adjust the curvature of the elastic arc plate (423); The base (1) is also provided with a tensioning arm (2), and the clamping wheel assembly (3) includes a clamping seat (32) and a clamping wheel (31) rotatably connected to the clamping seat (32), the clamping seat (32) is slidably connected to the tensioning arm (2), one end of the clamping seat (32) is fixed with a tensioning spring (5), the other end of the tensioning spring (5) is fixed to the base (1), one side of the tensioning arm (2) is also rotatably connected to a steering roller (23), the outer wall of the steering roller (23) is in conflict with the middle of the tensioning spring (5), and the bottom end of the tensioning arm (2) is rotatably connected to the main shaft (61) through the sleeve hole (26); The main shaft (61) is a hollow shaft structure. The actuator (7) includes an actuator shaft (71) and an actuator ring (74). The actuator shaft (71) is sleeved on the inner side of the main shaft (61). Two groups of the actuator rings (74) are symmetrically arranged on both sides of the measuring wheel (41). The balls (425) are in contact with the side of the actuator ring (74) away from the measuring wheel (41). The actuator ring (74) is provided with a plurality of sliding sleeves (741) evenly spaced at equal angles. A sliding rod (412) matching the sliding sleeve (741) is fixed on the measuring wheel (41). A return spring (413) is fixed between the sliding sleeve (741) and the sliding rod (412). One end of the execution shaft (71) is provided with a bidirectional thread groove (711), a support plate (11) is fixed to one side of the base (1), a ring seat (73) is fixed inside the support plate (11), a plurality of equally spaced sliding rods (731) are fixed on the ring seat (73), two groups of symmetrically arranged transmission rings (75) are slidably connected to the sliding rods (731), a sliding sleeve (752) matching the sliding rods (731) is provided on the transmission ring (75), a nut seat (753) matching the bidirectional thread groove (711) is fixed on the inner side of the transmission ring (75), a toggle ring (751) is fixed on the outer side of the circumference of the transmission ring (75), and a toggle groove (742) matching the toggle ring (751) is provided on the inner side of the execution ring (74); The return spring (413) has an elastic force that drives the execution ring (74) to approach the measuring wheel (41). One end of the main shaft (61) is fixedly connected to the first slide bar (412) on one side of the measuring wheel (41). The middle part of the measuring wheel (41) is provided with an assembly through hole (414) for inserting the second slide bar (731).

2. A cable meter according to claim 1, characterized in that: An assembly snap ring (422) is fixed on the inner side of the contact ring (421), an assembly snap ring (422) is provided on the outer wall of the measuring wheel (41) with an assembly snap ring (411) matching the assembly snap ring (422), the elastic arc plate (423) has an elastic force for driving the execution arc plate (424) close to the measuring wheel (41), and the elastic arc plates (423) on both sides of the covering mechanism (42) are arranged in a staggered manner.

3. A cable meter according to claim 1, characterized in that: A vertical plate 1 (12) and a vertical plate 2 (13) are fixed on the base (1), the encoder (6) is fixed on the vertical plate 2 (13), and the main shaft (61) is rotatably connected to the vertical plate 1 (12) via a bearing.

4. A cable meter according to claim 1, characterized in that: An adjusting rod (322) is fixed to one side of the clamping seat (32), the upper end of the tensioning spring (5) is fixed to the adjusting rod (322), an adjusting groove (21) matching the adjusting rod (322) is provided on the tensioning arm (2), two groups of guide grooves (22) are symmetrically provided on both sides of the adjusting groove (21), and a slider (321) matching the guide groove (22) is also fixed to the clamping seat (32); The steering roller (23) is rotatably connected to the bottom of the adjustment groove (21).

5. A cable meter according to claim 3, characterized in that: An actuator gear (72) is fixed to one end of the actuator shaft (71) away from the bidirectional thread groove (711), and a driven gear (62) meshing with the actuator gear (72) is rotatably connected to one side of the outer wall of the encoder (6). A connecting rod (24) is fixed to the bottom end of the tensioning arm (2), and an arcuate groove (131) for the connecting rod (24) to rotate is provided on the vertical plate (13). One end of the connecting rod (24) extends through the arcuate groove (131) and is fixed with an arcuate gear ring (25), and the arcuate gear ring (25) is meshed with the driven gear (62).

6. A cable meter according to claim 5, characterized in that: The tensioning spring (5) has an elastic force that drives the clamping wheel assembly (3) to approach the measuring wheel assembly (4). At the same time, the tensioning spring (5) has an elastic force that drives the tensioning arm (2) to flip and approach the base (1). When the tensioning arm (2) flips and approaches the base (1), the arc-shaped gear ring (25) drives the execution gear (72) to rotate clockwise, and at this time, the two sets of execution rings (74) perform a displacement action away from each other.

7. A cable meter according to claim 1, characterized in that: The width of the contact ring (421) is smaller than the width of the clamping wheel (31), the vertical plane of the axis of the contact ring (421) coincides with the vertical plane of the axis of the clamping wheel (31), the contact ring (421) is an arc-shaped structure, the elasticity of the wheel cover (43) at the elastic arc plate (423) is greater than the elasticity at the contact ring (421), and the elasticity of the wheel cover (43) at the contact ring (421) is 0.

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