Device and method for detecting tensile strength of fishing net thread

Abstract

The invention discloses a fishing net thread tensile strength detection device and method, and relates to the technical field of fishing net thread tensile strength detection.The fishing net thread tensile strength detection device comprises a loading frame, a driving motor is fixedly installed on the surface of the loading frame, and a winding roller rotationally penetrates through the inner wall and the outer wall of the loading frame and is fixedly connected with the output end of the driving motor; a tension detection mechanism is arranged on the face, away from the driving motor, of the loading frame. The device further comprises an auxiliary device and a protection device. Wherein the fixing device comprises a carrying plate, a fixing rod, a protection plate, a lifting rod, a first spring, a connecting rod, a rubber block, a pull rod and an L-shaped plate, when the protection plate is closed, the fishing net sleeving the fixing rod is automatically and effectively fixed, sudden slippage of the fishing net is avoided, meanwhile, the stress of the fishing net is more uniform during detection through three fixing points, and the detection accuracy is improved. And the detection effectiveness can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of fishing net line tensile strength detection, and in particular to a fishing net line tensile strength detection device and a detection method. Background Art

[0002] The fishing net line tensile strength testing device is a device specially designed to evaluate the tensile properties of fishing net lines under tension. The device helps users understand the performance, quality and safety of the material by accurately measuring the deformation and destructive behavior of the fishing net line under the application of external force.

[0003] The patent with patent announcement number CN219179093U relates to a fishing net line tensile strength detection device with a clamping and positioning function, which relates to the technical field of fishing net line tensile strength detection, including an outer frame of the detection device, a fishing net line tensile moving mechanism is arranged inside the outer frame of the detection device, and a clamping locator is fixedly arranged above the fishing net line tensile moving mechanism. This patent solves the problem that there is no device for detecting the pulling force of the fishing net nowadays, and manual labor is used to stretch the fishing net, and the pulling force on the fishing net cannot be accurately sensed. This patent realizes the automatic machine stretching measurement of the fishing net by setting the outer frame of the detection device and the fishing net line tensile moving mechanism. The fishing net is clamped and fixed by the coordinated setting of the fishing net fixing mechanism, the rotating shaft mechanism and the buckle mechanism in the clamping locator, which is more conducive to measuring accurate tensile strength data.

[0004] The above patent has the function of automatically stretching and measuring the fishing net. The fishing net is clamped and fixed by the coordinated arrangement of the fishing net fixing mechanism, the rotating shaft mechanism and the snap mechanism in the clamping locator, which is conducive to measuring accurate tensile strength data. However, before conducting the tensile strength test, it is very important to ensure that the fishing net is effectively fixed on the fixed claw plate. If the tensile test is performed in an unfixed state, the fishing net will suddenly slip or break, resulting in uneven actual distribution of tension, affecting the effectiveness of the test. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a fishing net line tensile strength detection device and detection method, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a fishing net line tensile strength detection device, including a loading frame, a driving motor is fixedly installed on the surface of the loading frame, a winding roller is rotatably penetrated through the inner and outer walls of the loading frame, the winding roller is fixedly connected to the output end of the driving motor, and a tension detection mechanism is arranged on the side of the loading frame away from the driving motor, and also includes a fixing device; it also includes an auxiliary device and a protective device; wherein, the fixing device includes a mounting plate, a fixing rod, a protective plate, a lifting rod, a No. 1 spring, a connecting rod, a rubber block, a pull rod and an L-shaped plate, the pull rod is pulled to move in the direction of the fixing rod, and the movement of the pull rod drives the L-shaped plate to move in the direction of the fixing rod. The carrying plate is fixedly installed on the inner wall of the loading frame, the fixing rod is fixedly passed through the inner and outer walls of the carrying plate, the protective plate slides through the top of the carrying plate, the lifting rod slides through the top of the fixing rod, the protective plate moves downward and contacts the top of the lifting rod, the movement of the protective plate applies downward pressure to the lifting rod, and the lifting rod moves downward under the influence of the pressure, the No. 1 spring is arranged between the lifting rod and the fixing rod, the connecting rod is fixedly installed on the bottom of the lifting rod, the connecting rod slides through the inner and outer walls of the fixing rod, the rubber block is fixedly installed on the bottom of the connecting rod, the pull rod slides through the top of the protective plate, and the L-shaped plate is fixedly installed on the bottom of the pull rod.

[0007] According to the above technical solution, an annular groove is provided on the circumferential surface of the fixing rod, and the inner wall of the rubber block contacts the annular groove. When the fishing net is put on the fixing rod, the fishing net put on the fixing rod contacts the inner wall of the annular groove. A corrugation 1 is provided on the bottom of the rubber block, and the corrugation 1 of the rubber block contacts the fishing net during movement, so that the rubber block can effectively fix the fishing net put on the fixing rod.

[0008] According to the above technical solution, the bottom of the L-shaped plate contacts the top of the carrying plate, and the surface of the L-shaped plate in contact with the carrying plate is separated during the movement, so that the limit imposed by the carrying plate on the downward movement of the L-shaped plate is released, and a rectangular groove is provided on the inner wall of the carrying plate, and the rectangular groove is adapted to a side of the L-shaped plate away from the pull rod. The L-shaped plate contacts the inner wall of the rectangular groove during the movement, so that the carrying plate imposes a limit on the upward movement of the L-shaped plate.

[0009] According to the above technical scheme, it also includes an auxiliary device and a protective device; the auxiliary device includes a rectangular plate, a telescopic rod, a No. 2 spring, a contact plate, a linkage plate, a Z-shaped plate and several friction plates. When the protective plate moves downward, it contacts the top of the contact plate, so that the movement of the protective plate drives the contact plate to move downward, and the movement of the contact plate drives the telescopic rod to move downward. The rectangular plate is fixedly installed at the bottom of the mounting plate, and the telescopic rod slides through the inner and outer walls of the mounting plate. The No. 2 spring is arranged between the telescopic rod and the rectangular plate, the contact plate is fixedly installed at the top of the telescopic rod, the linkage plate is fixedly installed at the bottom of the telescopic rod, the Z-shaped plate is fixedly installed on the surface of the linkage plate, and several friction plates are fixedly installed on the inner wall of the rectangular plate. A groove is opened on the top of the rectangular plate, and the size of the groove is adapted to the contact plate. The contact plate continues to move and contacts with the groove, and the contact plate is blocked and stops moving, and the groove provides support for the contact plate.

[0010] According to the above technical solution, the friction plate itself has elasticity. After the Z-shaped plate and the friction plate are separated, the deformed friction plate recovers under the action of its own elasticity. A second corrugation is provided on one side of the friction plate close to the Z-shaped plate, and a plurality of the friction plates are equidistantly distributed on the inner wall of the rectangular plate.

[0011] According to the above technical solution, the linkage plate is provided with an arc surface 1 on one side away from the mounting plate, and the Z-shaped plate is provided with an arc surface 2 on one side close to the friction plate. The arc surface 2 of the Z-shaped plate contacts the corrugation 2 of the friction plate during movement. The movement of the Z-shaped plate applies pressure to the friction plate, and the friction plate is squeezed and deformed.

[0012] The cam is fixedly mounted on the top of the plate, and the cam is pressed against the top of the plate to push the plate downward, so that the cam is pressed against the top of the plate and the cam is pressed downward to push the plate downward.

[0013] According to the above technical solution, the elastic plate is provided with an arc surface three on a side away from the push rod, and the limit plate is provided with a first slot and a second slot on a side close to the push rod. The elastic plate contacts the inner wall of the first slot, and the elastic plate moves and deforms, and the elastic plate and the first slot are separated during deformation.

[0014] A method for detecting the tensile strength of a fishing net line, using the above-mentioned tensile strength detection device of a fishing net line, comprises the following steps: Step 1: Pull one side of the fishing net to the front of the carrying plate, the holes on the diagonal sides of the fishing net are sleeved on the fixing rods on both sides, the middle hole is sleeved on the central fixing rod, and the fishing net sleeved on the fixing rod is in contact with the inner wall of the annular groove; Step 2: After releasing the limit, push the pull rod downward, the movement of the pull rod drives the L-shaped plate downward, and the movement of the pull rod drives the protective plate downward; Step 3: The movement of the protective plate drives the lifting rod to move downward, the movement of the lifting rod drives the connecting rod to move downward, the movement of the connecting rod drives the rubber block to move downward, and the movement of the rubber block fixes the fishing net; Step 4: Fix the other side of the fishing net on the winding roller, start the drive motor, and the output end of the drive motor drives the winding roller to rotate. The rotation of the winding roller applies tension to the fishing net, and the tension detection mechanism displays the detected tension on the screen.

[0015] The present invention provides a fishing net line tensile strength detection device, which has the following beneficial effects: (1) The fishing net line tensile strength testing device enables the carrying plate to limit the upward movement of the L-shaped plate. By limiting the protective plate after opening, it is convenient for the operator to fix the fishing net. The protective plate in the closed state is limited to ensure that the protective plate remains in a stable closed state during the tensile test. The rubber block applies pressure to the fishing net, so that the rubber block effectively fixes the fishing net on the fixed rod. When the protective plate is closed, the fishing net on the fixed rod is automatically fixed to prevent the fishing net from slipping suddenly. At the same time, the three fixing points make the fishing net more evenly stressed during the test, which helps to improve the effectiveness of the test.

[0016] (2) In the fishing net line tensile strength testing device, the movement of the telescopic rod drives the contact plate to move, and the contact plate applies a supporting force to the protective plate. The support provided by the groove helps to improve the stability during testing. At the same time, the contact plate applies an upward supporting force to the protective plate, which saves the operator's physical burden and helps to improve the overall work efficiency. The second arc surface and the second corrugation generate friction, so that the speed of the Z-shaped plate moving is slowed down by the friction force. Intermittent resistance is applied to the Z-shaped plate through multiple friction plates, which effectively controls the upward movement speed of the telescopic rod, thereby ensuring that the contact plate stably applies a supporting force to the protective plate.

[0017] (3) In the fishing net line tensile strength testing device, the blocking rod applies a blocking action to the rotating plate, so that the rotating plate blocks the linkage plate. By blocking the linkage plate by the rotating plate, the operator will not be affected by the contact plate during the first use, thus avoiding the operator's operation being affected when the operator is not fully prepared, which helps to improve the safety of the operation. The elastic plate contacts the inner wall of the No. 2 card slot, so that the movement of the C-shaped plate is restricted. By changing the position of the C-shaped plate, the operator can choose to use the contact plate according to the actual situation. At the same time, the No. 1 card slot and the No. 2 card slot are opened, which can also effectively avoid the displacement of the C-shaped plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the position structure of the driving motor and the winding roller of the present invention; Figure 3 This is a schematic diagram of the structure of the mounting plate of the present invention; Figure 4 This is a schematic diagram of the position structure of the L-shaped plate and the rectangular groove of the present invention; Figure 5 It is a schematic diagram of the internal structure of the fixing device of the present invention; Figure 6 It is a schematic diagram of the internal structure of the auxiliary device and the protective device of the present invention; Figure 7 For the present invention Figure 6 The enlarged structural diagram at A in the middle; Figure 8 It is a schematic diagram of the position structure of the elastic plate and the limiting plate of the present invention.

[0019] In the figure: 1. loading frame; 2. driving motor; 3. winding roller; 4. tension detection mechanism; 5. carrying plate; 6. fixing rod; 7. protective plate; 8. lifting rod; 9. No. 1 spring; 10. connecting rod; 11. rubber block; 12. pulling rod; 13. L-shaped plate; 141. rectangular plate; 142. telescopic rod; 143. No. 2 spring; 144. contact plate; 145. linkage plate; 146. Z-shaped plate; 147. friction plate; 151. fixing frame; 152. C-shaped plate; 153. connecting frame; 154. rotating plate; 155. blocking rod; 156. pushing rod; 157. elastic plate; 158. limiting plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figure 1-Figure 8 , one embodiment of the present invention is: a fishing net line tensile strength detection device, including a loading frame 1, a driving motor 2 is fixedly installed on the surface of the loading frame 1, a winding roller 3 is rotatably penetrated through the inner and outer walls of the loading frame 1, and the winding roller 3 is fixedly connected to the output end of the driving motor 2, and a tension detection mechanism 4 is arranged on the side of the loading frame 1 away from the driving motor 2, and also includes a fixing device; it also includes an auxiliary device and a protective device; wherein the fixing device includes a carrying plate 5, a fixing rod 6, a protective plate 7, a lifting rod 8, a No. 1 spring 9, a connecting rod 10, a rubber block 11, a pull rod 12 and an L-shaped plate 13, the carrying plate 5 is fixedly installed on the inner wall of the loading frame 1, and the fixing rod 6 is fixedly penetrated through the carrying plate 5 The inner and outer walls of the protective plate 7 are slidably penetrated on the top of the carrying plate 5, the lifting rod 8 is slidably penetrated on the top of the fixed rod 6, the No. 1 spring 9 is arranged between the lifting rod 8 and the fixed rod 6, the connecting rod 10 is fixedly installed at the bottom of the lifting rod 8, the connecting rod 10 slides through the inner and outer walls of the fixed rod 6, the rubber block 11 is fixedly installed at the bottom of the connecting rod 10, the pull rod 12 slides through the top of the protective plate 7, and the L-shaped plate 13 is fixedly installed at the bottom of the pull rod 12. When the protective plate 7 is closed, the fishing net on the fixed rod 6 is automatically and effectively fixed to prevent the fishing net from slipping suddenly. At the same time, the three fixed points make the fishing net more evenly stressed during detection, which helps to improve the effectiveness of detection.

[0022] An annular groove is provided on the circumferential surface of the fixing rod 6, and the inner wall of the rubber block 11 contacts the annular groove. A corrugation 1 is provided on the bottom of the rubber block 11. By providing the corrugation 1, the friction coefficient between the rubber block 11 and the fishing net is increased, thereby improving the clamping effect.

[0023] The bottom of the L-shaped plate 13 contacts the top of the carrying plate 5. A rectangular groove is provided on the inner wall of the carrying plate 5. The rectangular groove is matched with the side of the L-shaped plate 13 away from the pull rod 12. By limiting the opened protective plate 7, it is convenient for the operator to fix the fishing net. By limiting the protective plate 7 in the closed state, it is ensured that the protective plate 7 remains stably closed during the tension test.

[0024] A method for detecting the tensile strength of a fishing net line, using the above-mentioned tensile strength detection device of a fishing net line, comprises the following steps: Step 1: Pull one side of the fishing net to the front of the carrying plate 5, the holes on the diagonal sides of the fishing net are sleeved on the fixing rods 6 on both sides, the middle hole is sleeved on the central fixing rod 6, and the fishing net sleeved on the fixing rod 6 is in contact with the inner wall of the annular groove; Step 2: After the limit is released, push the pull rod 12 to move downward, the movement of the pull rod 12 drives the L-shaped plate 13 to move downward, and the movement of the pull rod 12 drives the protective plate 7 to move downward; Step 3: The protective plate 7 moves to drive the lifting rod 8 to move downward, the lifting rod 8 moves to drive the connecting rod 10 to move downward, the connecting rod 10 moves to drive the rubber block 11 to move downward, and the rubber block 11 moves to fix the fishing net; Step 4: Fix the other side of the fishing net on the winding roller 3, start the drive motor 2, and the output end of the drive motor 2 drives the winding roller 3 to rotate. The rotation of the winding roller 3 applies tension to the fishing net, and the tension detection mechanism 4 displays the detected tension on the screen.

[0025] When the present embodiment is working, one side of the fishing net is pulled in front of the carrying plate 5, the holes on the diagonal sides of the fishing net are sleeved on the fixing rods 6 on both sides, the middle holes are sleeved on the fixing rods 6 in the center, the fishing net sleeved on the fixing rods 6 contacts the inner wall of the annular groove, the pull rod 12 is pulled to move in the direction of the fixing rod 6, the movement of the pull rod 12 drives the L-shaped plate 13 to move in the direction of the fixing rod 6, the surface of the L-shaped plate 13 in contact with the carrying plate 5 during the movement is separated, so that the limit imposed by the carrying plate 5 on the downward movement of the L-shaped plate 13 is released, the pull rod 12 is pushed to move downward, the movement of the pull rod 12 drives the L-shaped plate 13 to move downward, and at the same time, the movement of the pull rod 12 drives the protective plate 7 to move downward, and the L-shaped plate 13 moves with the carrying plate during the movement. 5, the L-shaped plate 13 is blocked and stops moving, the pull rod 12 is pulled to move in the direction away from the fixed rod 6, the movement of the pull rod 12 drives the L-shaped plate 13 to move in the direction away from the fixed rod 6, the L-shaped plate 13 contacts the inner wall of the rectangular groove during movement, so that the carrying plate 5 applies a limit to the upward movement of the L-shaped plate 13, and the protective plate 7 after opening is limited, so that it is convenient for operators to fix the fishing net, and the protective plate 7 in the closed state is limited to ensure that the protective plate 7 remains in a closed state stably during the tension detection, and the protective plate 7 moves downward and contacts the top of the lifting rod 8, and the movement of the protective plate 7 applies downward pressure to the lifting rod 8, and the lifting rod 8 moves downward under the influence of the pressure. , the lifting rod 8 moves downward to squeeze the No. 1 spring 9, and the No. 1 spring 9 is squeezed and deformed. At the same time, the lifting rod 8 moves to drive the connecting rod 10 to move downward, and the connecting rod 10 moves to drive the rubber block 11 to move downward. The corrugation of the rubber block 11 contacts the fishing net during the movement, and the rubber block 11 continues to move to exert downward pressure on the fishing net, so that the rubber block 11 effectively fixes the fishing net on the fixed rod 6, and the other side of the fishing net is pulled in front of the winding roller 3, and then the fishing net is fixed on the circumferential surface of the winding roller 3, and the driving motor 2 is started. The output end of the driving motor 2 drives the winding roller 3 to rotate, and the winding roller 3 rotates to apply tension to the fishing net, and the tension detection mechanism 4 detects the tension It is displayed on the screen. After the tension test is completed, the protective plate 7 is opened. When the protective plate 7 moves upward, the tension applied to the lifting rod 8 is gradually reduced, so that the deformed spring 9 is restored and drives the lifting rod 8 to move upward. The movement of the lifting rod 8 drives the connecting rod 10 to move upward. The movement of the connecting rod 10 drives the rubber block 11 to move upward. The surface of the corrugation 1 that contacts the fishing net is separated during the movement, so that the rubber block 11 releases the pressure applied to the fishing net, and the fishing net is taken out for recycling. When the protective plate 7 is closed, the fishing net on the fixing rod 6 is automatically and effectively fixed to prevent the fishing net from slipping suddenly. At the same time, the three fixing points make the fishing net more evenly stressed during detection, which helps to improve the effectiveness of the detection.

[0026] See also Figure 1-Figure 8On the basis of the above embodiment, another embodiment of the present invention further includes an auxiliary device and a protective device; the auxiliary device includes a rectangular plate 141, a telescopic rod 142, a second spring 143, a contact plate 144, a linkage plate 145, a Z-shaped plate 146 and a plurality of friction plates 147, the rectangular plate 141 is fixedly mounted on the bottom of the mounting plate 5, the telescopic rod 142 slides through the inner and outer walls of the mounting plate 5, the second spring 143 is arranged between the telescopic rod 142 and the rectangular plate 141, the contact plate 144 is fixedly mounted on the top of the telescopic rod 142, the linkage plate 145 is fixedly mounted on the bottom of the telescopic rod 142, the Z-shaped plate 146 is fixedly mounted on the surface of the linkage plate 145, and a plurality of friction plates 147 are fixedly mounted on the inner wall of the rectangular plate 141, and a groove is provided on the top of the rectangular plate 141, the size of the groove is adapted to the contact plate 144, and support is provided by the groove, which helps to improve the stability during detection, and at the same time, the contact plate 144 applies an upward supporting force to the protective plate 7, which saves the physical burden of the operator and helps to improve the overall work efficiency.

[0027] The friction plate 147 itself is elastic, and a corrugation is provided on one side of the friction plate 147 close to the Z-shaped plate 146. A plurality of friction plates 147 are evenly distributed on the inner wall of the rectangular plate 141. By providing the elastic friction plate 147, the friction plate 147 and the Z-shaped plate 146 can be in close contact, thereby improving the deceleration effect.

[0028] The linkage plate 145 has an arc surface 1 on one side away from the mounting plate 5, and the Z-shaped plate 146 has an arc surface 2 on one side close to the friction plate 147. Intermittent resistance is applied to the Z-shaped plate 146 through multiple friction plates 147, thereby effectively controlling the upward movement speed of the telescopic rod 142, thereby ensuring that the contact plate 144 stably applies supporting force to the protective plate 7.

[0029] The protective device includes a fixed frame 151, a C-shaped plate 152, a connecting frame 153, a rotating plate 154, a blocking rod 155, a push rod 156, an elastic plate 157 and a limiting plate 158. The fixed frame 151 is fixedly mounted on the surface of the rectangular plate 141, the C-shaped plate 152 slides through the inner and outer walls of the fixed frame 151, the connecting frame 153 is fixedly mounted on the inner wall of the C-shaped plate 152, the rotating plate 154 rotates and penetrates the inner and outer walls of the connecting frame 153, the blocking rod 155 is fixedly mounted on the inner wall of the C-shaped plate 152, and the push rod 156 is fixedly mounted on the C-shaped plate 152 away from the blocking rod 15 5, the elastic plate 157 is fixedly mounted on the circumferential surface of the push rod 156, the limiting plate 158 is fixedly mounted on the side of the fixed frame 151 close to the elastic plate 157, a spiral spring is arranged between the rotating plate 154 and the connecting frame 153, a semicircular groove is opened on the top of the rotating plate 154, the semicircular groove is in contact with the circumferential surface of the blocking rod 155, the linkage plate 145 is blocked by the rotating plate 154, so that the operator will not be affected by the contact plate 144 when using it for the first time, so as to avoid the operator being affected by the operation when the operator is not fully prepared, which is helpful to improve the safety of operation.

[0030] The elastic plate 157 has an arc surface 3 on one side away from the push rod 156, and the limit plate 158 has a first slot and a second slot on one side close to the push rod 156. The elastic plate 157 contacts the inner wall of the first slot. By changing the position of the C-shaped plate 152, the operator can choose to use the contact plate 144 according to actual conditions. The first slot and the second slot are provided at the same time, which can also effectively prevent the C-shaped plate 152 from being offset.

[0031] When the present embodiment is working, the protection plate 7 contacts the top of the contact plate 144 when it moves downward, so that the protection plate 7 moves and drives the contact plate 144 to move downward, the contact plate 144 moves and drives the telescopic rod 142 to move downward, the telescopic rod 142 moves and drives the linkage plate 145 to move downward, and at the same time, the telescopic rod 142 moves downward to squeeze the No. 2 spring 143, and the No. 2 spring 143 is squeezed and deformed, and the deformed No. 2 spring 143 applies a reaction force to the moving telescopic rod 142, and the telescopic rod 142 moves downward and is affected by the additional resistance, and the contact plate 144 continues to move. The contact plate 144 is blocked and stops moving, and the groove provides support for the contact plate 144. When the protective plate 7 moves upward, the pressure exerted by the protective plate 7 on the contact plate 144 gradually decreases, so that the second spring 143 drives the telescopic rod 142 to move upward during recovery, and the movement of the telescopic rod 142 drives the contact plate 144 to move upward. The contact plate 144 exerts an upward supporting force on the moving protective plate 7, so that the operator can open the protective plate 7 more labor-saving. The support provided by the groove is helpful to improve the stability during detection. At the same time, the contact plate 144 The guard plate 7 applies an upward supporting force, which saves the physical burden of the operator and helps to improve the overall work efficiency. When the linkage plate 145 moves upward, the linkage plate 145 moves to drive the Z-shaped plate 146 to move upward. The arc surface 2 of the Z-shaped plate 146 contacts the corrugation 2 of the friction plate 147 during the movement. The Z-shaped plate 146 moves and applies pressure to the friction plate 147. The friction plate 147 is squeezed and deformed. The deformed friction plate 147 applies a reaction force to the Z-shaped plate 146, so that the corrugation 2 fits tightly with the arc surface 2. At the same time, the arc surface 2 moves and generates friction with the corrugation 2, so that the Z The speed of the Z-shaped plate 146 moving upward is slowed down by the friction force. After the Z-shaped plate 146 and the friction plate 147 are separated, the deformed friction plate 147 recovers under the action of its own elasticity, and the Z-shaped plate 146 continues to move and contacts the second friction plate 147. The above movement is repeated, so that the speed of the Z-shaped plate 146 moving upward is effectively controlled by the intermittent resistance. The intermittent resistance is applied to the Z-shaped plate 146 by multiple friction plates 147, so as to effectively control the speed of the telescopic rod 142 moving upward, thereby ensuring that the contact plate 144 stably applies the supporting force to the protective plate 7. When used for the first time, the arc surface 1 of the linkage plate 145 moves downward and contacts the top of the rotating plate 154. The movement of the arc surface 1 applies downward pressure to the rotating plate 154, so that the linkage plate 145 moves and drives the rotating plate 154 to rotate downward. The semicircular groove of the rotating plate 154 separates from the blocking rod 155 during the movement. At the same time, the rotating plate 154 stretches the volute spring during the rotation. The volute spring is deformed by the stretching. When the arc surface 1 separates from the rotating plate 154, the deformed volute spring recovers and drives the rotating plate 154 to rotate upward. The semicircular groove of the rotating plate 154 resumes contact with the blocking rod 155 during the movement. When the linkage plate 1 When the linkage plate 145 moves upward, the linkage plate 145 moves and contacts the bottom of the rotating plate 154, and the arc surface pair applies upward pressure to the rotating plate 154. Since the blocking rod 155 applies resistance to the upward rotation of the rotating plate 154, the rotating plate 154 blocks the linkage plate 145 from moving upward. The rotating plate 154 blocks the linkage plate 145, so that the operator will not be affected by the contact plate 144 when using it for the first time, avoiding the operator from being affected by the operation when the operator is not fully prepared, which helps to improve the safety of the operation. When the operator needs to use the contact plate 144, he directly pulls the push rod 156 to the far side. The push rod 156 moves in the direction away from the rectangular plate 141, the push rod 156 moves to drive the C-shaped plate 152 to move in the direction away from the rectangular plate 141, the C-shaped plate 152 moves to drive the connecting frame 153 to move in the direction away from the rectangular plate 141, the connecting frame 153 moves to drive the rotating plate 154 to move in the direction away from the rectangular plate 141, so that the linkage plate 145 does not contact the rotating plate 154 during the movement, and the push rod 156 moves to drive the elastic plate 157 to move in the direction away from the rectangular plate 141, and the elastic plate 157 contacts the inner wall of the first card slot during the movement, and the first card slot imposes an obstacle on the elastic plate 157, so that the elastic plate 157 The elastic plate 157 continues to move and deform, and the deformed elastic plate 157 is separated from the No. 1 slot. At the same time, the deformed elastic plate 157 contacts the limit plate 158. After the elastic plate 157 continues to move and separates from the limit plate 158, the deformed elastic plate 157 recovers under the action of its own elasticity. The elastic plate 157 contacts the inner wall of the No. 2 slot during the recovery process, so that the movement of the C-shaped plate 152 is restricted. By changing the position of the C-shaped plate 152, the operator can choose to use the contact plate 144 according to the actual situation. At the same time, the No. 1 slot and the No. 2 slot are opened, which can also effectively prevent the C-shaped plate 152 from being offset.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fishing net line tensile strength testing device, comprising a loading frame (1), characterized in that: A driving motor (2) is fixedly mounted on the surface of the loading frame (1), a winding roller (3) is rotatably penetrated through the inner and outer walls of the loading frame (1), the winding roller (3) is fixedly connected to the output end of the driving motor (2), and a tension detection mechanism (4) is arranged on a side of the loading frame (1) away from the driving motor (2), and further comprises a fixing device, an auxiliary device and a protective device; The fixing device comprises a carrying plate (5), a fixing rod (6), a protective plate (7), a lifting rod (8), a No. 1 spring (9), a connecting rod (10), a rubber block (11), a pull rod (12) and an L-shaped plate (13); the carrying plate (5) is fixedly mounted on the inner wall of the loading frame (1); the fixing rod (6) is fixedly passed through the inner and outer walls of the carrying plate (5); the protective plate (7) is slidably passed through the top of the carrying plate (5); the lifting rod (8) is slidably passed through the top of the fixing rod (6); the No. 1 spring (9) is arranged between the lifting rod (8) and the fixing rod (6); the connecting rod (10) is fixedly mounted on the bottom of the lifting rod (8); the connecting rod (10) is slidably passed through the inner and outer walls of the fixing rod (6); the rubber block (11) is fixedly mounted on the bottom of the connecting rod (10); the pull rod (12) is slidably passed through the top of the protective plate (7); and the L-shaped plate (13) is fixedly mounted on the bottom of the pull rod (12).

2. A fishing net line tensile strength detection device according to claim 1, characterized in that: An annular groove is provided on the circumferential surface of the fixing rod (6), the inner wall of the rubber block (11) is in contact with the annular groove, and a corrugation is provided on the bottom of the rubber block (11).

3. A fishing net line tensile strength detection device according to claim 2, characterized in that: The bottom of the L-shaped plate (13) contacts the top of the carrying plate (5), and the inner wall of the carrying plate (5) is provided with a rectangular groove, which is matched with a side of the L-shaped plate (13) away from the pull rod (12).

4. A fishing net line tensile strength detection device according to claim 3, characterized in that: The auxiliary device comprises a rectangular plate (141), a telescopic rod (142), a second spring (143), a contact plate (144), a linkage plate (145), a Z-shaped plate (146) and a plurality of friction plates (147); the rectangular plate (141) is fixedly mounted on the bottom of the mounting plate (5); the telescopic rod (142) slides through the inner and outer walls of the mounting plate (5); the second spring (143) is arranged between the telescopic rod (142) and the rectangular plate (141); the contact plate (144) is fixedly mounted on the top of the telescopic rod (142); the linkage plate (145) is fixedly mounted on the bottom of the telescopic rod (142); the Z-shaped plate (146) is fixedly mounted on the surface of the linkage plate (145); and a plurality of friction plates (147) are fixedly mounted on the inner wall of the rectangular plate (141); a groove is provided on the top of the rectangular plate (141); and the size of the groove matches that of the contact plate (144).

5. A fishing net line tensile strength detection device according to claim 4, characterized in that: The friction plate (147) itself has elasticity, and a second corrugation is provided on a surface of the friction plate (147) close to the Z-shaped plate (146). A plurality of the friction plates (147) are equidistantly distributed on the inner wall of the rectangular plate (141).

6. A fishing net line tensile strength detection device according to claim 5, characterized in that: A first arc surface is provided on a side of the linkage plate (145) away from the mounting plate (5), and a second arc surface is provided on a side of the Z-shaped plate (146) close to the friction plate (147).

7. A fishing net line tensile strength detection device according to claim 6, characterized in that: The protective device comprises a fixed frame (151), a C-shaped plate (152), a connecting frame (153), a rotating plate (154), a blocking rod (155), a push rod (156), an elastic plate (157) and a limiting plate (158); the fixed frame (151) is fixedly mounted on the surface of the rectangular plate (141); the C-shaped plate (152) slides through the inner and outer walls of the fixed frame (151); the connecting frame (153) is fixedly mounted on the inner wall of the C-shaped plate (152); the rotating plate (154) rotates through the inner and outer walls of the connecting frame (153); the blocking rod (155) is pushed against the surface of the rectangular plate (141); the elastic plate (157) is elastically mounted on the inner wall of the C-shaped plate (152); the blocking rod (155) is pushed against the surface of the rectangular plate (141); the C-shaped plate (152) slides through the inner and outer walls of the fixed frame (151); the connecting frame (153) is fixedly mounted on the inner wall of the C-shaped plate (152); the rotating plate (154) rotates through the inner and outer walls of the connecting frame (153); the blocking rod (155) is pushed against the surface of the rectangular plate (141); the elastic plate (157) is elastically mounted on ... The rod (155) is fixedly mounted on the inner wall of the C-shaped plate (152), the push rod (156) is fixedly mounted on a side of the C-shaped plate (152) away from the blocking rod (155), the elastic plate (157) is fixedly mounted on a circumferential surface of the push rod (156), the limit plate (158) is fixedly mounted on a side of the fixed frame (151) close to the elastic plate (157), a spiral spring is arranged between the rotating plate (154) and the connecting frame (153), and a semicircular groove is opened on the top of the rotating plate (154), and the semicircular groove is in contact with the circumferential surface of the blocking rod (155).

8. A fishing net line tensile strength detection device according to claim 7, characterized in that: The elastic plate (157) has a third arc surface on a side away from the push rod (156), and the limit plate (158) has a first clamping groove and a second clamping groove on a side close to the push rod (156), and the elastic plate (157) is in contact with the inner wall of the first clamping groove.

9. A method for detecting the tensile strength of a fishing net line, using the tensile strength detection device of claim 8, characterized in that: The following steps are involved: Step 1: Pull one side of the fishing net to the front of the carrying plate (5), the holes on the diagonal sides of the fishing net are sleeved on the fixing rods (6) on both sides, the middle hole is sleeved on the central fixing rod (6), and the fishing net sleeved on the fixing rod (6) contacts the inner wall of the annular groove; Step 2: After the limit is released, the pull rod (12) is pushed to move downward, the movement of the pull rod (12) drives the L-shaped plate (13) to move downward, and the movement of the pull rod (12) drives the protective plate (7) to move downward; Step 3: The protective plate (7) moves to drive the lifting rod (8) to move downward, the lifting rod (8) moves to drive the connecting rod (10) to move downward, the connecting rod (10) moves to drive the rubber block (11) to move downward, and the rubber block (11) moves to fix the fishing net; Step 4: fix the other side of the fishing net on the winding roller (3), start the driving motor (2), and the output end of the driving motor (2) drives the winding roller (3) to rotate. The rotation of the winding roller (3) applies tension to the fishing net, and the tension detection mechanism (4) displays the detected tension on the screen.

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