Ship cable tension on-line detection device

Abstract

The utility model discloses a ship cable tension on-line detection device, which comprises a base, a sliding assembly, a cable frame plate, a clamping assembly and a tension detection assembly, the two cable frame plates are slidably connected to the two sides of the sliding assembly in the horizontal direction and get away from or get close to each other along with the sliding assembly, and the two clamping assemblies are slidably connected to the two cable frame plates in the vertical direction correspondingly and used for clamping the two ends of a cable. And the tension detection assembly is arranged on the base between the two cable frame plates. The tension state of the cable can be adjusted, the tension of the cable is detected through the tension detection assembly, and data are more accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of cable tension detection, and more specifically to an online detection device for ship cable tension. Background Art

[0002] Tension is a special term in physics. Different from the surface tension of liquid, it refers to the mutual pulling force that exists inside a rope-like structure and is perpendicular to the contact surface of the two adjacent parts when it is subjected to tension. Since steel cable structures are extremely common and widely used in life, especially cable structures used in the shipbuilding field, the tension data that the cable bears when in use can be accurately calculated by detecting rope tension, which is of great significance for the quality assessment or status monitoring of ropes used in various projects.

[0003] After searching, it is found that a rope tension detection device is disclosed in an invention patent with Chinese patent publication number CN212158903U. The rope tension detection device in the invention patent is to place the rope to be tested into the rope mouth, the rope clamping groove and the rope outlet in sequence, add appropriate weights on the hook, generate a downward traction force on the rope, observe the descending distance of the gear rod through the observation window, and thus measure the tension of the rope by calculation. However, the rope tension detection device is a manual measurement operation structure. Compared with the precise measurement of the tension detection instrument, it may cause interference errors due to certain factors, resulting in inaccurate measurement results, resulting in errors in the calculated tension data, and inaccurate measurement data. Utility Model Content

[0004] In order to solve the above problems, the utility model proposes an online detection device for ship cable tension, which drives two cable racks to move away from each other through a sliding component, and tightens the two ends of the cable through the clamping components on the two cable racks, and at the same time uses a tension detection component to detect the cable in a taut state, so that the detection data is accurate.

[0005] To achieve the above-mentioned purpose, the utility model provides an online detection device for ship cable tension, comprising a base, a sliding component, a cable frame plate, a clamping component and a tension detection component, wherein the sliding component is arranged on the base, the two cable frames are slidably connected to the two sides of the sliding component in the horizontal direction and move away from or approach each other with the sliding component, the two clamping components are respectively slidably connected to the two cable frames in the vertical direction and are used to clamp the two ends of the cable, and the tension detection component is arranged on the base between the two cable frames.

[0006] In the present technical solution, the cable passes through the tension detection component and its two ends are respectively fixed on the clamping components on both sides, and then the sliding component drives the two cable racks to move away from each other, so that the cable gradually enters a taut state. At the same time, the detection component located in the middle performs tension detection on the taut cable. After the detection is completed, the sliding component drives the two cable racks to move closer to each other, so that the cable is in a relaxed state. Finally, the cable is loosened by the clamping component. The cable tension detection is convenient and fast, and the detection data is accurate.

[0007] As a preferred solution, in order to make the two cable racks move away from or closer to each other, the sliding assembly includes a slide rail and two sets of driving structures, the slide rail is arranged along the horizontal direction of the base, the driving structure is arranged on the slide rail, and the two cable racks are respectively slidably connected to both sides of the slide rail and are respectively connected to the driving structure.

[0008] As a preferred solution, in order to synchronize the movements of the two cable racks, the driving structure includes two transmission wheels and a transmission belt, wherein the transmission wheels are rotatably mounted on the side walls of the slide rail, the transmission belt is wound around the two transmission wheels, and the cable rack is mounted on the transmission belt, wherein a driving gear is mounted on the side of the transmission wheels of one group of the driving structures, and a driven gear is mounted on the transmission wheels of another group of the driving structures, and the driving gear is meshed with the driven gear, and at least one group of the transmission wheels of the driving structures is connected to a second driving motor.

[0009] As a preferred solution, the tension detection assembly includes a detection frame and a detection element. In order to ensure uniform force on both ends of the cable, the detection frame is centrally arranged on the base between the two cable frame plates. The side wall of the detection frame is penetrated by a through hole for the cable to pass through. The detection element is arranged in the detection frame and abuts against the cable located in the detection frame.

[0010] As a preferred embodiment, the detection element is a pressure strain gauge. When the cable is in a taut state, the cable presses the pressure strain gauge and bends it. The resistance value of the pressure strain gauge changes with the size of the cable tension, thereby detecting the cable tension.

[0011] As a preferred solution, in order to facilitate reading the value of the cable tension, a tension reader is provided on the outer wall of the detection frame, and the tension reader is electrically connected to the detection element.

[0012] As a preferred solution, in order to further tighten the cable to bend the pressure strain gauge, a tightening assembly is provided in the detection frame. The tightening assembly is slidably connected to the detection frame and one end of the tightening assembly tightens the cable in the detection frame. The pressure strain gauge is located above the middle of the cable. The tightening assembly slides to tighten the middle of the cable upward, so that the middle of the cable bulges and bends the pressure strain gauge to obtain tension data.

[0013] As a preferred solution, in order to lift the middle part of the cable upward, the tightening assembly includes a limit block and a first lifting structure. The first lifting structure is installed in the detection frame. The limit block is connected to the first lifting structure and moves up and down therewith. The limit block is provided with a limit groove adapted to the cable. The cable located in the detection frame is placed in the limit groove of the limit block to prevent the cable from deviating from or escaping from the limit block, thereby instantly releasing elastic potential energy and causing damage to the detection element.

[0014] As a preferred solution, a second lifting structure is provided along the vertical direction of each cable rack plate, and the clamping assembly is connected to the second lifting structure and performs lifting and lowering movement therewith. The second lifting structure can further tighten both sides of the middle part of the cable under the limit of the detection assembly, thereby detecting the tension of the cable in a taut state.

[0015] As a preferred solution, in order to clamp the end of the cable, the clamping assembly includes a connecting frame, a clamping block and a locking bolt. The connecting frame is connected to the second lifting structure, and one end of the locking bolt extends into the connecting frame and is fixed to the clamping block. The cable is extended into the connecting frame, and the locking bolt is tightened to fix the end of the cable.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The utility model drives two cable racks to move away from each other through a sliding component to adjust the tension state of the cable, and then uses a detection component to detect the tension of the cable in the tension state, so that the detection data is accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model of an online detection device for ship cable tension;

[0019] Figure 2 yes Figure 1 Schematic diagram of another perspective;

[0020] Figure 3 It is a structural diagram of the detection component.

[0021] In the figure: base 1; sliding assembly 2; transmission wheel 201; transmission belt 202; cable frame plate 3; second screw rod 301; second lifting block 302; clamping assembly 4; connecting frame 401; locking bolt 402; clamping block 403; tension detection assembly 5; detection frame 501; detection element 502; tension reader 503; limit block 504; first screw rod 505; first lifting block 506; through hole 507; cable 6. DETAILED DESCRIPTION

[0022] The drawings are only for illustrative purposes and cannot be construed as limiting the present invention. To better illustrate the present embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are only for illustrative purposes and cannot be construed as limiting the present invention.

[0023] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "long", "short" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0024] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0025] Embodiment 1:

[0026] like Figures 1 to 3 As shown, a ship cable tension online detection device includes a base 1, a sliding component 2, a cable frame plate 3, a clamping component 4 and a tension detection component 5, the sliding component 2 is arranged on the base 1, the two cable frames 3 are slidably connected to the two sides of the sliding component 2 in the horizontal direction and move away from or close to each other with the sliding component 2, the two clamping components 4 are slidably connected to the two cable frames 3 in the vertical direction respectively and are used to clamp the two ends of the cable 6, and the tension detection component 5 is arranged on the base 1 between the two cable frames 3.

[0027] In this embodiment, the sliding assembly 2 is fixed to the base 1 by bolts, and the two cable racks 3 are vertically fixed on both sides of the sliding assembly 2. The cable 6 first passes through the tension detection assembly 5 and its two ends are clamped and fixed by the two clamping assemblies 4 respectively. The sliding assembly 2 can drive the two cable racks 3 to move away from or approach each other to achieve the tightening or relaxation of the cable 6. At the same time, the tension detection assembly 5 performs tension detection on the cable 6 in a tightened state.

[0028] Specifically, the tension detection assembly 5 includes a detection frame 501 and a detection element 502. The detection frame 501 is centrally arranged on the base 1 between the two cable frame plates 3. The side wall of the detection frame 501 is penetrated by a through hole 507 for the cable 6 to pass through. The detection element 502 is arranged in the detection frame 501 and abuts against the cable 6 located in the detection frame 501.

[0029] In this embodiment, the height of the through hole 507 of the detection frame 501 is the same as the height of the clamping assembly 4 on the cable frame plate 3, and the height of the detection element 502 in the detection frame 501 also corresponds to the above two, so that the cable 6 can just abut against the detection element 502 after passing through the through hole 507, and the detection element 502 can detect the change in the tension state of the cable 6 to obtain the tension value.

[0030] Specifically, the detection element 502 is a pressure strain gauge.

[0031] In this embodiment, the pressure strain gauge is a sensing device, which is a pressure sensor that converts the measured pressure into a corresponding resistance value change by using an elastic sensitive element and a strain gauge. According to the different structures of the elastic sensitive element, the strain pressure sensor can be roughly divided into four types: strain tube type, diaphragm type, strain beam type and combined type. Among them, the strain tube type is also called strain cylinder type. Its elastic sensitive element is a thin-walled cylinder with one end closed and the other end connected to the measured system with a flange. Two or four strain gauges are attached to the cylinder wall, half of which are attached to the solid part as a temperature compensation gauge, and the other half are used as a measurement strain gauge. When there is no pressure, the four strain gauges form a balanced Full-bridge circuit; when pressure acts on the inner cavity, the cylinder deforms into a "waist drum shape", causing the bridge to lose balance and output a voltage that is related to the pressure. This sensor can also use the piston to convert the measured pressure into force and transmit it to the strain tube or transmit the measured pressure through a vertical chain-shaped diaphragm. The strain tube pressure sensor has a simple structure, is easy to manufacture, and has strong applicability; the diaphragm-type elastic sensitive element is a circular metal flat diaphragm fixed around the periphery. When the diaphragm is deformed by pressure, the radial strain and tangential strain at the center both reach the positive maximum value, while the radial strain at the edge reaches the negative maximum value, and the tangential strain is zero. Therefore, two strain gauges are often attached to the positive and negative At the maximum strain point, it is connected to form a half-bridge circuit of adjacent bridge arms to obtain greater sensitivity and temperature compensation. The use of a circular foil strain gauge (see resistance strain gauge) can maximize the use of the strain effect of the diaphragm. The nonlinearity of this sensor is more significant. The latest product of the diaphragm pressure sensor integrates the functions of the elastic sensitive element and the strain gauge into a single-crystal silicon diaphragm, that is, the resistance strip is diffused on the single-crystal silicon diaphragm using integrated circuit technology, and a solid-state pressure sensor is made of a peripheral fixed structure; when the strain beam type measures a smaller pressure, a fixed beam or an equal-strength beam structure can be used. One method is to use a diaphragm to convert pressure into force and then transmit it through the sensor. The force rod is transmitted to the strain beam, and the maximum strain of the fixed beams at both ends is at the two ends and the midpoint of the beam, and the strain gauges are attached to these places; in the combined strain pressure sensor, the elastic sensitive element can be divided into a sensing element and an elastic strain element. The sensing element converts pressure into force and transmits it to the most sensitive part of the elastic strain element, while the strain gauge is attached to the maximum strain of the elastic strain element. In fact, the more complex strain tube type and strain beam type belong to this type. The sensing elements include diaphragms, diaphragm boxes, bellows, Bourdon tubes, etc., and the elastic strain elements include cantilever beams, fixed beams, annular beams, thin-walled cylinders, etc. They can be combined into various types according to different needs.

[0032] Specifically, a tension reader 503 is disposed on the outer wall of the detection frame 501 , and the tension reader 503 is electrically connected to the detection element 502 . In this embodiment, the tension reader 503 can directly read the data of the pressure strain gauge.

[0033] Specifically, a tightening assembly is provided in the detection frame 501 , and the tightening assembly is slidably connected in the detection frame 501 , and one end of the tightening assembly tightens the cable 6 located in the detection frame 501 .

[0034] In this embodiment, the tightening assembly can lift the cable 6 located in the detection frame 501 upward, and the lifted cable 6 simultaneously bends the pressure strain gauge above, thereby accurately measuring the tension data of the cable 6.

[0035] Specifically, the tightening assembly includes a limit block 504 and a first lifting structure. The first lifting structure is installed in the detection frame 501. The limit block 504 is connected to the first lifting structure and moves up and down therewith. The limit block 504 is provided with a limit groove adapted to the cable 6.

[0036] In this embodiment, the first lifting structure includes two first screw rods 505, a first lifting block 506 and a first driving motor. Two first bevel gears are provided on the driving shaft of the first driving motor. The ends of the two first screw rods 505 are coaxially connected with the second bevel gear and mesh with the first bevel gear. The two first screw rods 505 are respectively rotatably connected in the detection frame 501. The two ends of the first lifting block 506 are respectively screwed to the two first screw rods 505. The limit block 504 is fixed to the middle part of the first lifting block 506. The first driving motor drives the two first screw rods 505 to rotate. At the same time, the first lifting block 506 slides along the first screw rod 505, so that the first lifting block 506 moves upward or downward, and finally the limit block 504 tightens or loosens the cable 6.

[0037] Specifically, the sliding assembly 2 includes a sliding rail and two sets of driving structures. The sliding rail is arranged along the horizontal direction of the base 1, and the driving structure is arranged on the sliding rail. The two cable racks 3 are respectively slidably connected to the two sides of the sliding rail and are connected to the respective driving structures to move away from or approach each other. In this embodiment, the cable racks 3 are respectively moved closer to or away from each other along the sliding rail to loosen or tighten the cable.

[0038] Specifically, the clamping assembly 4 includes a connecting frame 401, a clamping block 403 and a locking bolt 402. The connecting frame 401 is connected to the second lifting structure. The two locking bolts 402 are arranged opposite to each other and one end thereof extends into the connecting frame 401 and is fixed to the two clamping blocks 403.

[0039] In this embodiment, locking bolts 402 are screwed onto the upper and lower sides of the connecting frame 401 to clamp the cable 6 from the upper and lower directions.

[0040] Embodiment 2:

[0041] This embodiment is similar to Embodiment 1, except that, in this embodiment, Figure 2 As shown, the driving structure includes two transmission wheels 201 and a transmission belt 202, the transmission wheels 201 are rotatably mounted on the side walls of the slide rail, the transmission belt 202 is wound around the two transmission wheels 201, and the cable rack 3 is mounted on the transmission belt 202. A driving gear is mounted on the side of the transmission wheels 201 of one group of the driving structures, and a driven gear is mounted on the transmission wheels 201 of another group of the driving structures, and the driving gear is meshed with the driven gear. At least one group of the transmission wheels 201 of the driving structure is connected to a second driving motor.

[0042] In this embodiment, two second driving motors are respectively installed on both sides of the base 1, and their output shafts are coaxially connected to the transmission wheels 201 of each driving structure and drive the transmission wheels 201 to rotate. The transmission wheels 201 of each driving structure then drive the transmission belts 202 to move, and then the two transmission belts 202 respectively drive the two cable racks 3 to move closer to or away from each other. The driving gear and the driven gear can ensure the synchronization of the movement of the two cable racks 3, further ensuring the accuracy of tension detection.

[0043] Embodiment 3:

[0044] This embodiment is similar to Embodiment 1, except that, in this embodiment, Figure 2 As shown, a second lifting structure is provided along the vertical direction of each cable rack plate 3, and the clamping assembly 4 is connected to the second lifting structure and performs lifting movement therewith.

[0045] In this embodiment, the second lifting structure includes a second screw rod 301, a second lifting block 302 and a third drive motor. The third drive motor is connected to the second screw rod 301, and the second lifting block 302 is screwed to the second screw rod 301. The second lifting block 302 is arranged in the cable frame plate 3 and one end of the second lifting block 302 extends out of the cable frame plate 3 and is fixed to the clamping assembly 4. Under the limit of the cable frame plate 3, the second lifting block 302 slides with the second screw rod 301 under the drive of the third drive motor, so that the cable 6 on the clamping assembly 4 moves up and down, and the cable 6 is further tightened under the limit of the detection frame 501.

[0046] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

[0047] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A ship cable tension online detection device, characterized in that: The utility model comprises a base (1), a sliding component (2), a cable frame plate (3), a clamping component (4) and a tension detection component (5), wherein the sliding component (2) is arranged on the base (1), the two cable frames (3) are slidably connected to the two sides of the sliding component (2) in the horizontal direction and move away from or approach each other along with the sliding component (2), the two clamping components (4) are slidably connected to the two cable frames (3) in the vertical direction respectively and are used to clamp the two ends of the cable (6), and the tension detection component (5) is arranged on the base (1) between the two cable frames (3).

2. The on-line detection device for ship cable tension according to claim 1, characterized in that: The sliding assembly (2) comprises a sliding rail and two sets of driving structures, the sliding rail is arranged along the horizontal direction of the base (1), the driving structure is arranged on the sliding rail, and the two cable racks (3) are respectively slidably connected to the two sides of the sliding rail and are respectively connected to the driving structure to move away from or approach each other.

3. The on-line detection device for ship cable tension according to claim 2, characterized in that: The driving structure comprises two transmission wheels (201) and a transmission belt (202); the transmission wheels (201) are rotatably mounted on the side walls of the slide rail; the transmission belt (202) is wound around the two transmission wheels (201); the cable rack (3) is mounted on the transmission belt (202); a driving gear is mounted on the side of the transmission wheels (201) of one group of the driving structures; a driven gear is mounted on the transmission wheels (201) of another group of the driving structures; the driving gear is meshed with the driven gear; and at least one group of the transmission wheels (201) of the driving structures is connected to a second driving motor.

4. The on-line detection device for ship cable tension according to claim 1, characterized in that: The tension detection assembly (5) comprises a detection frame (501) and a detection element (502); the detection frame (501) is centrally arranged on the base (1) between the two cable frame plates (3); a through hole (507) is penetrated through the side wall of the detection frame (501) for the cable (6) to pass through; the detection element (502) is arranged in the detection frame (501) and abuts against the cable (6) located in the detection frame (501).

5. The on-line detection device for ship cable tension according to claim 4, characterized in that: The detection element (502) is a pressure strain gauge.

6. The on-line detection device for ship cable tension according to claim 4, characterized in that: The outer wall of the detection frame (501) is provided with a tension reader (503), and the tension reader (503) is electrically connected to the detection element (502).

7. The on-line detection device for ship cable tension according to claim 4, characterized in that: A tightening assembly is provided in the detection frame (501), the tightening assembly is slidably connected in the detection frame (501), and one end of the tightening assembly tightens a cable (6) located in the detection frame (501).

8. The on-line detection device for ship cable tension according to claim 7, characterized in that: The tightening assembly comprises a limit block (504) and a first lifting structure, wherein the first lifting structure is installed in the detection frame (501), the limit block (504) is connected to the first lifting structure and moves up and down therewith, and the limit block (504) is provided with a limit groove adapted to the cable (6).

9. The on-line detection device for ship cable tension according to claim 1, characterized in that: A second lifting structure is provided along the vertical direction of each cable rack plate (3), and the clamping assembly (4) is connected to the second lifting structure and performs lifting movement therewith.

10. The on-line detection device for ship cable tension according to claim 9, characterized in that: The clamping assembly (4) comprises a connecting frame (401), a clamping block (403) and a locking bolt (402); the connecting frame (401) is connected to the second lifting structure; one end of the locking bolt (402) extends into the connecting frame (401) and is fixed to the clamping block (403).

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