Load core breaking test device
By using an automated lifting assembly and linkage structure, combined with magnetic attraction and buffering structures, the problems of low efficiency and inconsistent height when manually lifting weights are solved, achieving efficient and accurate detection of load-induced core breakage.
Patent Information
- Application Number
- CN202511495595.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-20
- Publication Date
- 2026-01-23
AI Technical Summary
In existing load-bearing core breakage tests, manual lifting of weights is inefficient and it is difficult to ensure the consistency of lifting height each time, resulting in deviations in test data and making it difficult to meet the requirements of batch testing or high precision.
The system employs a linkage structure between the lifting component and the linkage mechanism. The lifting component is driven by the drive component to rise to a specified height and then automatically detaches. Combined with a magnetic structure and elastic components, it achieves automated weight release, simulating the impact effect of manual release. The system also absorbs the impact force through a buffer structure to ensure the accuracy of the test.
The system automates the lifting and releasing of weights, ensuring consistency in the height at which weights fall in each test, improving testing efficiency and accuracy, and reducing the workload of operators.
Smart Images
Figure CN121384586A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of load core breaking test of cable, and particularly relates to a load core breaking test device. BACKGROUND
[0002] As a key component in the fields of power transmission and signal communication, the mechanical performance of cable directly affects the safety and reliability of the overall system. In long-term use or specific working conditions, the internal core wire of the cable is often broken due to continuous load, so the load core breaking test becomes an important means to evaluate the durability of the cable.
[0003] When the existing load core breaking tester performs the load core breaking test of the cable, the clamp is used to clamp the core wire at one end of the cable, a weight is fixed on the core wire at the other end of the cable, the weight is allowed to fall freely, so as to exert a constant pulling force on the core wire. During the test, the load sensor converts the pulling force on the core wire into an electrical signal and transmits it to the controller, the controller receives and analyzes the data, when the stress on the core wire reaches the limit and the core wire is broken, the pulling force will suddenly decrease, the controller analyzes the data transmitted by the load sensor and combines the previous recorded pulling force value to accurately determine the load borne by the cable when the core wire is broken.
[0004] When the load core breaking test is realized by repeated impact of the weight falling freely, the weight is usually lifted to a specified height by manual operation and then released. The number of core wire breakage is determined by multiple cycle tests. The manual lifting of the weight not only has low operation efficiency, but also is difficult to ensure the consistency of the lifting height each time, which may cause deviation of the test data and is difficult to meet the needs of batch testing or high-precision testing.
[0005] Therefore, there is a need for a load core breaking test device to solve the problems of low efficiency of manual lifting of the weight and deviation of measurement data. SUMMARY
[0006] In order to realize the automatic operation of lifting and releasing the weight, ensure the consistency of the falling height of the weight in each test, improve the test efficiency and reduce the labor intensity of the operator, the present application provides a load core breaking test device.
[0007] The load core breaking test device provided by the present application adopts the following technical scheme: The application discloses a kind of load breaking core test devices, including rack, the clamping assembly of fixed core line two ends is equipped on the rack, and counterweight is hung on the rack by core line, lifting assembly of lifting counterweight is installed on the rack, driving assembly of driving lifting assembly is raised, the driving assembly includes linkage that is synchronous with lifting assembly and rises, control piece that keeps linkage and lifting assembly fixed to rise synchronously, lifting assembly, linkage are slidably installed on the rack along the lifting direction of counterweight, control piece is fixedly installed on the rack, control piece controls linkage and lifting assembly to be separated after counterweight rises to specified height, the weight of lifting assembly is greater than the weight of counterweight so that height difference is formed during the falling of lifting assembly and counterweight.
[0008] By adopting the above technical scheme, the lifting assembly is fixedly connected with the linkage, and after the linkage is raised under the driving of the driving assembly, the lifting assembly is synchronously raised with the linkage, the control piece disconnects the lifting assembly and the linkage when the counterweight reaches the preset height, and the counterweight freely falls, and the weight of the lifting assembly is greater than the weight of the counterweight, so that a speed difference is generated when the lifting assembly and the linkage fall, a height difference is formed between the lifting assembly and the linkage, and the impact effect of manually releasing the counterweight is simulated.
[0009] Optionally, the lifting assembly comprises a lifting plate and a magnetic attraction structure that is magnetically attracted to the linkage, and the lifting plate is slidably connected to the magnetic attraction structure.
[0010] By adopting the above technical scheme, the lifting plate and the magnetic attraction structure are slidably connected, so that stable connection and controllable disconnection of the lifting assembly and the linkage are realized, and the accuracy of the test is further improved.
[0011] Optionally, the magnetic attraction structure comprises a magnetic matching plate that is magnetically attracted to the linkage and an elastic member, and the elastic member elastically slides away from the linkage by directly abutting against the magnetic matching plate after the magnetic matching plate and the linkage are separated from the magnetic attraction.
[0012] By adopting the above technical scheme, when the magnetic attraction disappears, the elastic member forcibly separates the magnetic matching plate and the linkage by directly abutting against the magnetic matching plate, so that the magnetic attraction structure is prevented from contacting the linkage during free falling, and the free falling of the counterweight is not affected.
[0013] Optionally, the lifting assembly further comprises a bottom plate that is in contact with the bottom end of the rack and a buffer sheet that is in contact with the bottom plate to offset the upward impact force of the bottom plate, the buffer sheet is fixedly installed at the bottom end of the lifting plate, and the bottom plate is fixedly installed at the bottom end of the buffer sheet.
[0014] By adopting the technical scheme, when the lifting plate is lowered to the lowest height, the bottom plate directly contacts the bottom end of the rack, the bottom plate is impacted upward, the buffer sheet collides with the bottom plate, absorbs and disperses the upward impact force of the bottom plate, and effectively offsets the instantaneous impact generated by inertia after the lifting assembly falls.
[0015] Optionally, a buffer pad that buffers and absorbs the downward impact force of the bottom plate is fixedly installed at the bottom end of the rack, and the buffer pad comprises a honeycomb porous elastomer.
[0016] By adopting the technical scheme, the elastomer absorbs the downward impact force of the bottom plate through the cavity structure, avoids local deformation of the bottom end of the rack, and the honeycomb porous structure can absorb the impact noise.
[0017] Optionally, the driving assembly further comprises a driving source that drives the linkage to lift, an output end of the driving source is in sliding fit with the rack, and the linkage is fixedly installed on the output end of the driving source.
[0018] By adopting the technical scheme, the linkage is fixedly installed on the output end of the driving source, and stable displacement of the linkage is realized through movement of the output end of the driving source, so that the lifting process of the linkage is more stable.
[0019] Optionally, the clamping assembly comprises a fixed clamping piece and a movable clamping piece in sliding fit with the fixed clamping piece to clamp the core wire, a load sensor that tests and collects tension values of the core wire is arranged on the fixed clamping piece, and the load sensor is fixedly installed at one end of the fixed clamping piece away from the movable clamping piece.
[0020] By adopting the technical scheme, an adjustable clamping space for clamping the core wire is formed between the fixed clamping piece and the movable clamping piece, so that core wires of different diameters can be firmly clamped, the reaction force transmitted by the core wire under tension is directly measured by the load sensor, and the accuracy of test data is effectively improved.
[0021] Optionally, a guide shaft that guides horizontal sliding of the movable clamping piece is fixedly installed on the fixed clamping piece, and a locking piece that is in threaded fit with the fixed clamping piece is arranged on the movable clamping piece.
[0022] By adopting the technical scheme, accurate positioning of the movable clamping piece in the clamping process is realized through the guide shaft, and adjustable control of the clamping force of the core wire is realized through the locking piece, so that the core wire is always in an axial tension state during the test process.
[0023] In summary, the present application has at least one of the following beneficial technical effects: 1. The driving assembly drives the lifting assembly to rise, the linkage rises synchronously with the lifting assembly and is kept fixed through the control piece, the lifting assembly lifts the counterweight to rise, and the counterweight is lifted to a specified height instead of manually. 2. The control member controls the linkage member to disengage from the lifting assembly after the counterweight member rises to a specified height, and the lifting assembly and the counterweight member fall to form a height difference, which can simulate complex working conditions and detect the real performance of the core wire under different loads and impact conditions; 3. The load sensor is fixedly installed on the fixed clamping member, and directly contacts the core wire when the clamping assembly clamps the core wire, so that the tension value of the core wire can be tested and collected, which helps to more accurately detect the performance of the core wire. BRIEF DESCRIPTION OF DRAWINGS
[0024] Figure 1 It is a schematic diagram of the overall structure of the embodiment of the present application, which is used to show the overall structure of the device; Figure 2 It is a schematic diagram of the local structure of the embodiment of the present application Figure 1 , which is used to show the specific structure of the lifting assembly and the driving assembly; Figure 3 It is a schematic diagram of the local structure of the embodiment of the present application Figure 2 , which is used to show the specific structure of the clamping assembly.
[0025] Reference signs: 1, rack; 111, clamping assembly; 112, fixed clamping member; 113, movable clamping member; 1131, locking member; 114, load sensor; 115, guide shaft; 121, counterweight member; 131, first guide rod; 141, second guide rod; 151, elastic body; 2, lifting assembly; 211, lifting plate; 2111, bottom plate; 2112, buffer sheet; 212, mounting stand; 213, third guide rod; 2131, anti-falling protrusion; 221, magnetic attraction structure; 222, magnetic matching plate; 223, elastic member; 3, driving assembly; 311, linkage member; 312, driving source; 321, control member. DETAILED DESCRIPTION
[0026] The following will be combined with the Figures 1-3 The present application is further described in detail.
[0027] Embodiment: A load breaking core test device, referring to Figure 1 and Figure 2, including rack 1, rack 1 is provided with fixed core line end clamping assembly 111 and counterweight 121, clamping assembly 111 is fixedly installed on the top of rack 1, counterweight 121 is hung on rack 1 through core line, rack 1 is also provided with lifting assembly 2, driving assembly 3, lifting assembly 2, driving assembly 3 are slidingly installed on rack 1 along the height direction of rack 1, driving assembly 3 includes linkage 311, control member 321, linkage 311 can slide up and down on rack 1, control member 321 is fixedly installed on rack 1, when linkage 311 rises, lifting assembly 2 is driven to rise synchronously, lifting assembly 2 rises to specified height, control member 321 controls linkage 311 and lifting assembly 2 to separate, lifting assembly 2 falls freely under the action of gravity, counterweight 121 is constrained by core line, after lifting assembly 2 separates, it begins to fall under gravity, core line is gradually straightened and generates tension, lifting assembly 2 falls freely under the action of gravity, counterweight 121 falls synchronously under the action of gravity and core line constraint, because the weight of lifting assembly 2 is larger, a constant height difference is formed during falling, which avoids the interference of lifting assembly 2 on the falling trajectory of counterweight 121, first guide rod 131 and second guide rod 141 are fixedly installed on rack 1, lifting assembly 2 and first guide rod 131 are in sliding fit, linkage 311 and second guide rod 141 are in sliding fit, which ensures that the lifting trajectory of linkage 311 and lifting assembly 2 remains stable, the lifting height of counterweight 121 remains consistent, lifting assembly 2 is driven to rise synchronously through linkage 311, which reduces manual lifting and releasing of counterweight 121, and improves test precision.
[0028] Reference Figure 1 And Figure 2 , lifting assembly 2 includes lifting plate 211 and magnetic attraction structure 221, lifting plate 211 and first guide rod 131 are in sliding fit, lifting plate 211 rises to realize lifting of counterweight 121, in the embodiment, counterweight 121 includes a weight, lifting plate 211 includes a rigid plate structure made of metal material, magnetic attraction structure 221 is connected with linkage 311 through magnetic adsorption to realize the connection between lifting assembly 2 and linkage 311, and then linkage 311 drives lifting plate 211 to rise synchronously.
[0029] Reference Figure 1 And Figure 2The lifting plate 211 is fixedly installed with a mounting vertical plate 212, the mounting vertical plate 212 is fixedly installed at one end of the lifting plate 211 close to the linkage 311, the mounting vertical plate 212 is fixedly installed with a third guide rod 213, the magnetic attraction structure 221 comprises a magnetic cooperation plate 222 and an elastic element 223, the magnetic cooperation plate 222 is sleeved on the third guide rod 213 and slides along the length direction of the third guide rod 213, one end of the third guide rod 213 away from the mounting vertical plate 212 is fixedly installed with an anti-falling protrusion 2131, the elastic element 223 is sleeved on the third guide rod 213, and one end of the elastic element 223 abuts against the magnetic cooperation plate 222 and the other end abuts against the anti-falling protrusion 2131.
[0030] With reference to Figure 1 And Figure 2 In the embodiment, the linkage 311 comprises an electromagnet, the control element 321 comprises a controller, the lifting plate 211 comprises an alloy plate made of magnetic material, and the elastic element 223 comprises a spring. After the control element 321 controls the linkage 311 to be electrified, the linkage 311 is magnetically attracted to the magnetic cooperation plate 222, the magnetic cooperation plate 222 slides on the third guide rod 213 and approaches the linkage 311, and the elastic element 223 is extruded to generate elastic deformation. The driving assembly 3 further comprises a driving source 312, which is fixedly installed on the rack 1. In the embodiment, the driving source 312 comprises an air cylinder, the output end of the driving source 312 is telescopic along the height direction of the rack 1, and the linkage 311 is fixedly installed on the output end of the driving source 312. When the driving source 312 works, the output end of the driving source 312 is telescopic to realize the up-down movement of the linkage 311, the linkage 311 rises to drive the magnetic cooperation plate 222 to rise synchronously, and the magnetic cooperation plate 222 rises to drive the lifting assembly 2 to rise as a whole. After the lifting assembly 2 lifts the counterweight 121 to a specified height, the control element 321 is de-energized to the linkage 311, the linkage 311 is separated from the magnetic attraction of the magnetic cooperation plate 222, the elastic element 223 restores the deformation and abuts against the magnetic cooperation plate 222 to move away from the linkage 311, the distance between the magnetic cooperation plate 222 and the linkage 311 gradually increases during the moving-away process, the influence of residual magnetic force is effectively eliminated, the separation action of the lifting assembly 2 from the linkage 311 is quickly completed, the magnetic cooperation plate 222 is prevented from rebounding accidentally through the limiting of the elastic element 223, and the magnetic cooperation plate 222 maintains a stable state of moving away from the linkage 311 through the elastic element 223 continuously exerting a pre-tightening force during the falling process of the lifting assembly 2.
[0031] With reference to Figure 1 And Figure 3, the counterweight 121 and the lifting assembly 2 fall freely under the action of gravity, and since the weight of the lifting assembly 2 is greater than that of the counterweight 121, the lifting assembly 2 and the counterweight 121 form a height difference during the falling process, the falling height difference remains constant, ensuring that the lifting plate 211 does not collide with the counterweight 121, and the counterweight 121 exerts a constant pulling force on the core wire during the free falling process, under the action of the core wire, the counterweight 121 stops falling after falling to a certain height, the core wire is straightened, and the lifting assembly 2 falls freely until it contacts the bottom end of the rack 1.
[0032] Referring to Figure 1 and Figure 2 , the lifting assembly 2 further comprises a buffer sheet 2112 and a bottom plate 2111, the buffer sheet 2112 is fixedly installed at the bottom end of the lifting plate 211, and the bottom plate 2111 is fixedly installed at the bottom end of the buffer sheet 2112, both the buffer sheet 2112 and the bottom plate 2111 are in sliding fit with the first guide rod 131, after the bottom plate 2111 contacts the bottom end of the rack 1, the bottom plate 2111 will have an upward impact force, the buffer sheet 2112 is made of rubber material, which can absorb the impact energy transmitted by the bottom plate 2111 through elastic deformation, and generate a reverse force at the moment when the bottom plate 2111 contacts the rack 1 to offset the upward impact of the bottom plate 2111.
[0033] Referring to Figure 1 and Figure 2 , a buffer pad is fixedly installed at the bottom end of the rack 1, the buffer pad comprises a honeycomb porous elastomer 151, which converts the impact kinetic energy of the lifting assembly 2 into elastic potential energy through the deformation of the elastomer 151, the inner diameter of the honeycomb porous structure gradually decreases from top to bottom, and the multi-hole structure generates layer-by-layer deformation when subjected to pressure to prolong the energy absorption time, and the elastomer 151 can still recover to the initial state after multiple impacts, and the multi-hole structure effectively reduces the noise during the impact process.
[0034] Referring to Figure 1 and Figure 3 , the clamping assembly 111 comprises a fixed clamping piece 112 and a movable clamping piece 113, a load sensor 114 is fixedly installed at one end of the fixed clamping piece 112 close to the movable clamping piece 113, the load sensor 114 tests and collects the pulling force value of the core wire when the fixed clamping piece 112 and the movable clamping piece 113 clamp the core wire, a guide shaft 115 is fixedly installed at one end of the fixed clamping piece 112 facing the movable clamping piece 113, the movable clamping piece 113 is sleeved on the guide shaft 115 and slides along the length direction of the guide shaft 115, ensuring accurate positioning of the movable clamping piece 113 during clamping, and a locking piece 1131 is detachably installed on the movable clamping piece 113, the locking piece 1131 is in threaded fit with the fixed clamping piece 112 after penetrating through the movable clamping piece 113, thereby adjusting the clamping distance between the fixed clamping piece 112 and the movable clamping piece 113, facilitating disassembly and placement of the core wire.
[0035] The implementation principle of the embodiment of the application is that the clamping assembly 111 fixes one end of the core wire, the counterweight 121 is hung on the rack 1 through the core wire, the lifting assembly 2 is connected with the linkage 311 through the magnetic attraction structure 221, under the action of the driving source 312, the linkage 311 rises along the second guide rod 141, driving the lifting assembly 2 to rise along the first guide rod 131 synchronously, the lifting assembly 2 lifts the counterweight 121 to a specified height, the control 321 cuts off the power supply of the linkage 311, so that the linkage 311 is separated from the lifting assembly 2, the weight of the lifting assembly 2 is greater than that of the counterweight 121, the lifting assembly 2 and the counterweight 121 freely fall under the action of gravity, the lifting assembly 2 falls faster due to the greater weight, the core wire is straightened, and the counterweight 121 stops falling, and the lifting assembly 2 falls to the bottom end of the rack 1, and the load sensor 114 can test the tension value of the core wire.
[0036] The above are preferred embodiments of the application, and are not intended to limit the protection scope of the application, so that: any equivalent changes made according to the structure, shape and principle of the application should be covered within the protection scope of the application.
Claims
1. A load-bearing core breakage test device, comprising a frame (1), wherein the frame (1) is provided with a clamping assembly (111) for fixing both ends of a core wire and a counterweight (121), the clamping assembly (111) is fixedly installed on the top of the frame (1), and the counterweight (121) is suspended on the frame (1) by the core wire, characterized in that: The frame (1) is equipped with a lifting assembly (2) for lifting the counterweight (121) and a drive assembly (3) for driving the lifting assembly (2) to rise. The drive assembly (3) includes a linkage (311) that rises synchronously with the lifting assembly (2) and a control (321) that keeps the linkage (311) and the lifting assembly (2) fixed and rising synchronously. The lifting assembly (2) and the linkage (311) are slidably mounted on the frame (1) along the lifting direction of the counterweight (121). The control (321) is fixedly mounted on the frame (1). After the counterweight (121) rises to a specified height, the control (321) controls the linkage (311) to disengage from the lifting assembly (2). The weight of the lifting assembly (2) is greater than the weight of the counterweight (121) so that a height difference is formed between the lifting assembly (2) and the counterweight (121) during the falling process.
2. The load-bearing core fracture test device according to claim 1, characterized in that: The lifting assembly (2) includes a lifting plate (211) and a magnetic attraction structure (221) that is magnetically attracted to the linkage component (311). The lifting plate (211) and the magnetic attraction structure (221) are in sliding engagement.
3. The load-bearing core fracture test device according to claim 2, characterized in that: The magnetic attraction structure (221) includes a magnetic mating plate (222) that is magnetically attracted to the linkage member (311) and an elastic member (223). After the magnetic mating plate (222) and the linkage member (311) are separated from the magnetic attraction, the elastic member (223) resists the magnetic mating plate (222) and slides elastically away from the linkage member (311).
4. The load-bearing core fracture test device according to claim 2, characterized in that: The lifting assembly (2) further includes a base plate (2111) that contacts the bottom end of the frame (1) and a buffer plate (2112) that opposes the base plate (2111) to offset the upward impact force of the base plate (2111). The buffer plate (2112) is fixedly installed at the bottom end of the lifting plate (211), and the base plate (2111) is fixedly installed at the bottom end of the buffer plate (2112).
5. The load-bearing core fracture test device according to claim 4, characterized in that: The bottom end of the frame (1) is fixedly equipped with a buffer pad that buffers and absorbs the downward impact force of the base plate (2111). The buffer pad includes a honeycomb porous elastomer (151).
6. The load-bearing core fracture test device according to claim 1, characterized in that: The drive assembly (3) also includes a drive source (312) that drives the linkage (311) to rise and fall. The output end of the drive source (312) is slidably engaged with the frame (1), and the linkage (311) is fixedly installed on the output end of the drive source (312).
7. The load-bearing core fracture test device according to claim 1, characterized in that: The clamping assembly (111) includes a fixed clamping member (112) and a movable clamping member (113) that slides with the fixed clamping member (112) to clamp the core wire. The fixed clamping member (112) is provided with a load sensor (114) that tests and collects the tensile force value of the core wire. The load sensor (114) is fixedly installed at one end of the fixed clamping member (112) away from the movable clamping member (113).
8. The load-bearing core fracture test device according to claim 7, characterized in that: The fixed clamping member (112) is fixedly installed with a guide shaft (115) for horizontal sliding of the guide movable clamping member (113), and the movable clamping member (113) is provided with a locking member (1131) that is threadedly engaged with the fixed clamping member (112).