Tension sensing device with tension protection structure
By introducing a limit bracket and buffer sleeve structure into the tension sensing device, the problems of sensor damage due to overload and shortened service life are solved, and the protection and stability of the sensor are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN JIUMUREN ANIMAL HUSBANDRY EQUIP CO LTD
- Filing Date
- 2025-10-22
- Publication Date
- 2026-07-21
AI Technical Summary
Existing tension sensing devices are easily damaged when external tension suddenly increases, and lack an effective buffer structure, leading to equipment downtime and shortened service life.
A tension sensing device with a tension protection structure was designed, including a limit frame, an adjusting column, a limit rod, and a buffer sleeve. The preset protection threshold is adjusted by adjusting the position of the adjusting column, and the buffer sleeve absorbs the instantaneous impact force to prevent the sensor from being overloaded and damaged.
It effectively prevents sensors from being damaged by overload, extends their service life, improves the flexibility and stability of the device, and reduces maintenance costs.
Smart Images
Figure CN224535276U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of tension sensing technology, and in particular to a tension sensing device with a tension protection structure. Background Technology
[0002] Tensile force sensors are crucial devices for detecting the magnitude of tensile force on an object, and their detection accuracy and lifespan directly affect the operational stability of the entire system. Existing tensile force sensors typically connect the sensor directly to the force-bearing component, with the sensor directly bearing the external tensile force. In practical applications, when the external tensile force suddenly increases beyond the sensor's rated range, the sensor is highly susceptible to overload damage, leading to equipment downtime and increased maintenance costs. Furthermore, existing sensors lack effective buffering structures, and the instantaneous impact of external tensile force can shorten the sensor's lifespan, making it difficult to meet the long-term usage requirements under complex operating conditions. Utility Model Content
[0003] The purpose of this application is to provide a tension sensing device with a tension protection structure to solve the above-mentioned problems.
[0004] To achieve the above objectives, the technical solution of this application is as follows: A tension sensing device with a tension protection structure includes a tension sensor, a limiting frame on a connecting column above the tension sensor, an adjusting column slidably mounted on the limiting frame, a limiting rod at the bottom of the adjusting column, and an adjusting nut screwed onto the top of the adjusting column.
[0005] Preferably, two fixing nuts are screwed onto the connecting column, and the limiting frame includes a connecting frame, which is sleeved on the connecting column and located between the two fixing nuts.
[0006] Preferably, the limiting frame further includes a sliding sleeve, which is circumferentially spaced on the outer peripheral wall of the tension sensor, and the top of the sliding sleeve is connected to the connecting frame; the sliding sleeve has a sliding hole inside, and the adjusting column is slidably disposed in the sliding hole.
[0007] Preferably, the inner wall of the sliding hole is provided with an anti-rotation groove, and the outer peripheral wall of the adjusting column is provided with an anti-rotation strip, the anti-rotation strip and the anti-rotation groove being axially slidingly engaged.
[0008] Preferably, the number of sliding sleeves is three.
[0009] Preferably, the tension sensor has a connecting rod at its bottom, a limiting stop at its bottom, a buffer sleeve on its connecting post, and the top of the buffer sleeve is slidably and elastically positioned above the limiting stop.
[0010] Preferably, the top of the buffer sleeve is provided with a buffer plate, the buffer plate is provided with a buffer hole, the connecting rod is provided through the buffer hole, and a buffer spring is provided between the limiting stop handle and the buffer plate.
[0011] Preferably, a connecting block is screwed onto the bottom of the buffer sleeve, and the connecting block is provided with a threaded connection hole.
[0012] The tension sensing device with a tension protection structure disclosed in this application, when the external tension increases to near the sensor's rated range, will first have a limit rod abut against a downwardly extending portion of the tension sensor, limiting the sensor from continuing to withstand greater tension and preventing damage due to overload. Compared to traditional devices without a protection structure, this design allows for the preset protection threshold by adjusting the position of the adjusting column, adapting to sensors with different ranges, offering greater flexibility and fundamentally solving the overload damage problem. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 This is another schematic diagram of the overall structure of this application; Figure 3 This is another schematic diagram of the overall structure of this application; Figure 4 for Figure 2 Enlarged view of a portion of point A in the middle; Figure 5 This is a schematic diagram of the internal structure of the buffer sleeve in this application; Figure 6 This is a schematic diagram of the buffer sleeve structure of this application.
[0014] In the picture: 1. Tension sensor; 10. Connecting rod; 100. Limit stop handle; 101. Bolt; 102. Buffer spring; 2. Connecting column; 3. Fixing nut; 4. Limit bracket; 40. Connecting bracket; 41. Adjusting column; 42. Adjusting nut; 43. Sliding sleeve; 430. Anti-rotation groove; 431. Sliding hole; 410. Anti-rotation strip; 44. Limit rod; 5. Buffer plate; 50. Buffer hole; 6. Buffer sleeve; 60. Connecting block; 61. Threaded connection hole. Detailed Implementation
[0015] The present application will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic diagrams, illustrating only the basic structure of the present application, and therefore only show the components relevant to the present application.
[0016] like Figure 1-6As shown, a tension sensing device with a tension protection structure includes a tension sensor 1, a limiting frame 4 on a connecting column 2 above the tension sensor 1, an adjusting column 41 slidably mounted on the limiting frame 4, a limiting rod 44 at the bottom of the adjusting column 41, and an adjusting nut 42 screwed onto the top of the adjusting column 41.
[0017] The tension sensor 1 is the core detection component, and the connecting column 2 above it is used to connect to an external force-bearing structure (such as the equipment component whose tension is to be detected). The limiting frame 4 is set on the connecting column 2, providing a base for the installation and sliding of the adjusting column 41. The adjusting column 41 is slidably set along the limiting frame 4, and the height position of its bottom limiting rod 44 can be adjusted according to the rated range of the sensor.
[0018] The adjusting nut 42 is tightened on the top of the adjusting column 41 to fix the position of the adjusting column 41 after adjustment.
[0019] When the external tension increases to near the sensor's rated range, the limit rod 44 will first abut against the downward-extending part of the tension sensor 1, limiting the sensor from continuing to withstand greater tension and preventing damage to the sensor due to overload. Compared to traditional unprotected structures, this design can preset the protection threshold by adjusting the position of the adjusting column 41, adapting to sensors with different ranges, providing greater flexibility and fundamentally solving the overload damage problem.
[0020] In some further embodiments, two fixing nuts 3 are screwed onto the connecting column 2, and the limiting frame 4 includes a connecting frame 40, which is sleeved on the connecting column 2 and located between the two fixing nuts 3.
[0021] The two fixing nuts 3 on the connecting column 2 are located on the upper and lower sides of the connecting frame 40, respectively, to clamp and fix the connecting frame 40 to the connecting column 2.
[0022] The "clamping" fixing method ensures that there is no relative movement between the limit frame 4 and the connecting column 2, so as to avoid the adjustment column 41 from shifting due to loosening, which would make the overload protection threshold inaccurate or even fail. The two fixing nuts 3 can be tightened to adjust the fixing strength of the connecting frame 40, and at the same time, it is convenient to disassemble or adjust the height of the connecting frame 40 according to the installation requirements, thus taking into account both the fixing reliability and the installation convenience.
[0023] In some further embodiments, the limiting frame 4 also includes a sliding sleeve 43, which is circumferentially spaced on the outer peripheral wall of the tension sensor 1, and the top of the sliding sleeve 43 is connected to the connecting frame 40; the sliding sleeve 43 is provided with a sliding hole 431 inside, and the adjusting column 41 is slidably disposed in the sliding hole 431.
[0024] The sliding sleeves 43 are circumferentially spaced on the outer peripheral wall of the tension sensor 1, and the top is connected to the connecting frame 40 to form a support structure surrounding the sensor; the sliding hole 431 inside provides an axial sliding channel for the adjusting column 41.
[0025] The sliding sleeve 43 serves two purposes: first, it provides precise guidance for the adjusting column 41, ensuring that the adjusting column 41 moves only along the axial direction, preventing it from tilting under force, and ensuring the accurate positioning of the limiting rod 44; second, the circumferentially spaced structure can evenly distribute the force under limiting to the connecting frame 40, preventing excessive local force from causing deformation of the limiting frame 4, enhancing the rigidity of the overall structure, and extending the service life of the protective structure.
[0026] In some further embodiments, the inner wall of the sliding hole 431 is provided with an anti-rotation groove 430, and the outer peripheral wall of the adjusting column 41 is provided with an anti-rotation strip 410, which slides axially with the anti-rotation groove 430.
[0027] The anti-rotation groove 430 on the inner wall of the sliding hole 431 is axially slidingly engaged with the anti-rotation strip 410 on the outer peripheral wall of the adjusting column 41. The cross-sectional shape of the anti-rotation strip 410 is adapted to the anti-rotation groove 430 (such as rectangular or trapezoidal).
[0028] The anti-rotation groove 430 and the anti-rotation strip 410 can prevent the adjusting column 41 from rotating circumferentially: if the adjusting column 41 rotates during sliding or fixing, it will cause the limiting rod 44 at its bottom to shift circumferentially, which may cause it to miss the contact with the downwardly extending part of the tension sensor 1, causing the overload protection to fail; the cooperation between the anti-rotation groove 430 and the anti-rotation strip 410 can completely restrict the rotational freedom of the adjusting column 41, ensuring that the limiting rod 44 is always aligned with the preset limiting area, thus ensuring the reliability of the protection function.
[0029] In some further embodiments, the number of sliding sleeves 43 is three.
[0030] The sliding sleeves 43 are set to three, and are evenly distributed circumferentially at 120° along the outer peripheral wall of the tension sensor 1. The triangular support structure formed by the three sliding sleeves 43 provides higher stability.
[0031] The triangular structure itself has the ability to resist deformation, which can effectively disperse the radial force during the limiting and prevent the single sliding sleeve 43 from being damaged due to the concentration of force. At the same time, the coordinated limiting of the three adjusting columns 41 can make the force more uniform, prevent the tension sensor 1 from shifting due to excessive force on one side, and further protect the detection accuracy of the sensor.
[0032] In some further embodiments, the tension sensor 1 is provided with a connecting rod 10 at its bottom, the connecting rod 10 is provided with a limiting stop 100 at its bottom, the connecting post 2 is provided with a buffer sleeve 6, and the top of the buffer sleeve 6 is slidably elastically positioned above the limiting stop 100.
[0033] The connecting rod 10 at the bottom of the tension sensor 1 is used to connect to the structure below. The limiting handle 100 is set at the bottom of the connecting rod 10 to limit the maximum sliding stroke of the buffer sleeve 6. The limiting handle 100 is fixed to the end face of the connecting rod 10 by bolts 101.
[0034] The buffer sleeve 6 is slidably mounted on the connecting post 2, and its top is engaged with the limiting stop 100 through an elastic structure. The function of this structure is to absorb instantaneous impact: when the external tensile force suddenly increases, the buffer sleeve 6 will first absorb part of the impact energy through elastic deformation, and then transfer the remaining tensile force to the sensor, avoiding the instantaneous impact force from acting directly on the sensor, thus solving the problem of shortened sensor life due to lack of buffering in traditional devices; the limiting stop 100 can prevent the buffer sleeve 6 from falling off the connecting rod 10 during sliding, ensuring the integrity of the buffer structure.
[0035] In some further embodiments, the top of the buffer sleeve 6 is provided with a buffer plate 5, the buffer plate 5 is provided with a buffer hole 50, the connecting rod 10 is provided through the buffer hole 50, and a buffer spring 102 is provided between the limiting stop handle 100 and the buffer plate 5.
[0036] The buffer plate 5 at the top of the buffer sleeve 6 provides a support base for the buffer spring 102, and the buffer hole 50 allows the connecting rod 10 to pass through, ensuring that the connecting rod 10 slides smoothly.
[0037] The buffer spring 102 is sleeved on the connecting rod 10, with its two ends abutting against the limiting stop 100 and the buffer plate 5, respectively. When there is a momentary impact, the limiting stop 100 will compress the buffer spring 102 upward. The buffer spring 102 converts the impact energy into elastic potential energy through deformation and then slowly releases it, achieving "soft contact" type impact absorption. Compared with a simple elastic sleeve, the buffering effect of the buffer spring 102 is more controllable. Springs with different stiffness can be selected according to the impact resistance of the sensor to adapt to different working conditions and further improve the targeted nature of the buffering.
[0038] In actual implementation, the tension data transmitted by the tension sensor 1 through the transmitter can be pre-tapered, that is, the weight of the elastic sleeve, buffer spring 102, etc. can be excluded.
[0039] In some further embodiments, a connecting block 60 is screwed onto the bottom of the buffer sleeve 6, and the connecting block 60 is provided with a threaded connecting hole 61.
[0040] The connecting block 60 at the bottom of the buffer sleeve 6 is fixed to the buffer sleeve 6 by threads. The threaded connection hole 61 on the connecting block 60 is used to connect to the load-bearing component below (such as the equipment frame or the tensile structure to be tested). The advantages of threaded connection are convenient installation and firm connection: the entire device can be fixed to the external structure with only bolts 101, without the need for complex welding or snap-fit structures; at the same time, the detachability of threaded connection facilitates the later maintenance or replacement of parts (such as buffer spring 102, buffer sleeve 6), reduces maintenance costs, and ensures long-term stable operation of the device.
[0041] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this application.
Claims
1. A tension sensing device with a tension protection structure, characterized in that, It includes a tension sensor (1), a limiting frame (4) is provided on the connecting column (2) above the tension sensor (1), an adjusting column (41) is slidably provided on the limiting frame (4), a limiting rod (44) is provided at the bottom of the adjusting column (41), and an adjusting nut (42) is screwed on the top of the adjusting column (41).
2. The tension sensing device with a tension protection structure according to claim 1, characterized in that, Two fixing nuts (3) are screwed onto the connecting column (2), and the limiting frame (4) includes a connecting frame (40), which is sleeved on the connecting column (2) and located between the two fixing nuts (3).
3. The tension sensing device with a tension protection structure according to claim 2, characterized in that, The limiting frame (4) also includes a sliding sleeve (43), which is circumferentially spaced on the outer peripheral wall of the tension sensor (1), and the top of the sliding sleeve (43) is connected to the connecting frame (40); the sliding sleeve (43) is provided with a sliding hole (431) inside, and the adjusting column (41) is slidably disposed in the sliding hole (431).
4. The tension sensing device with a tension protection structure according to claim 3, characterized in that, The inner wall of the sliding hole (431) is provided with an anti-rotation groove (430), and the outer peripheral wall of the adjusting column (41) is provided with an anti-rotation strip (410). The anti-rotation strip (410) and the anti-rotation groove (430) are axially slidingly engaged.
5. The tension sensing device with a tension protection structure according to claim 4, characterized in that, The number of sliding sleeves (43) is three.
6. The tension sensing device with a tension protection structure according to claim 1, characterized in that, The tension sensor (1) has a connecting rod (10) at its bottom, and a limiting stop (100) at the bottom of the connecting rod (10). The connecting column (2) has a buffer sleeve (6), and the top of the buffer sleeve (6) is elastically and slidably positioned above the limiting stop (100).
7. The tension sensing device with a tension protection structure according to claim 6, characterized in that, The top of the buffer sleeve (6) is provided with a buffer plate (5), the buffer plate (5) is provided with a buffer hole (50), the connecting rod (10) is provided through the buffer hole (50), and a buffer spring (102) is provided between the limiting stop handle (100) and the buffer plate (5).
8. The tension sensing device with a tension protection structure according to claim 7, characterized in that, The bottom of the buffer sleeve (6) is screwed with a connecting block (60), and the connecting block (60) is provided with a threaded connection hole (61).