Protection device for tension overload

Abstract

The utility model provides a protection device for tension overload, and belongs to the technical field of protection devices. Comprising a housing; a scale ring plate; the scale ring plate is stably connected to the shell, and tension scales are arranged on the scale ring plate; the through groove is formed in the scale ring plate, the through groove is arranged to be annular, and the vertical center line of the through groove coincides with the vertical center line of the scale ring plate; the sliding ring plate is connected into the shell in a sliding mode, and the sliding ring plate is located below the scale ring plate. According to the utility model, the purpose of flexibly adjusting the protection threshold according to different application scenes is realized through the cooperation of the plurality of uniformly distributed adjusting holes in the sliding ring plate and the detachable stop lever, and meanwhile, through the cooperation of the tension scales on the scale ring plate, the plurality of indicating lamps, the sliding ring plate, the pointer and the stop lever, the protection threshold can be flexibly adjusted according to different application scenes. The purpose of providing multi-stage accurate warning when the pulling force is overloaded is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of protection devices, and particularly relates to a protection device for tensile overload. Background Art

[0002] In modern industrial production and various mechanical operations, the precise control of tensile force and overload protection are crucial; whether in the operation of large mechanical equipment or in the operation of precision instruments, ensuring that the tensile force is within a safe and appropriate range is of great significance for ensuring the normal operation of equipment, improving production efficiency, and ensuring the safety of operators; with the continuous progress of technology, the control requirements for tensile force of various mechanical systems and equipment are getting higher and higher, and the demand for devices that can effectively monitor and protect against tensile overload is also becoming increasingly urgent.

[0003] However, the existing tensile protection devices often have some limitations in practical applications; in many different application scenarios, due to differences in working conditions, equipment types, and operation requirements, the requirements for tensile protection thresholds are also different; but the existing protection devices usually have fixed protection threshold settings and are difficult to flexibly adapt to diverse application scenarios; this may lead to the situation that in some cases, the protection device may not play a role in a timely manner at an appropriate tensile force value, resulting in equipment damage or production accidents; in other cases, it may also cause unnecessary interference with the normal operation of the equipment due to unreasonable protection threshold settings, affecting work efficiency. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a protection device for tensile overload, so as to solve the technical problems that the protection device usually has a fixed protection threshold setting and is difficult to flexibly adapt to diverse application scenarios, and the response is single and lacks multi-level warnings when tensile overload occurs.

[0005] Technical solution: To achieve the above objectives, the present utility model is realized through the following technical solutions: A protection device for tensile overload, comprising: a housing; a scale ring plate; stably connected to the housing, and the scale ring plate is provided with tensile scales; a through groove, opened on the scale ring plate, the through groove is arranged in a ring shape, and the vertical center line of the through groove coincides with the vertical center line of the scale ring plate; a sliding ring plate, slidably connected inside the housing, and the sliding ring plate is located below the scale ring plate, and the vertical center line of the sliding ring plate coincides with the vertical center line of the scale ring plate; a rotating shaft, rotatably connected inside the housing, and the vertical center line of the rotating shaft coincides with the vertical center line of the sliding ring plate; a pointer, arranged on the rotating shaft, and the pointer is used to indicate the tensile scale on the scale ring plate; a stop rod, detachably connected to the sliding ring plate, and the stop rod is located in the through groove, the height of the stop rod is greater than the depth of the through groove, and the stop rod protrudes above the lower surface of the pointer; a plurality of adjustment holes, evenly opened on the sliding ring plate, and the adjustment holes are used to adjust the installation position of the stop rod. Among them, the material of the scale ring plate is wear-resistant engineering plastic or metal material, and its surface is subjected to anti-reflection treatment to clearly read the scale under different light conditions; the width of the through groove is slightly larger than the diameter of the stop rod to ensure that the stop rod can move smoothly therein without jamming; the material of the sliding ring plate can be a lightweight but strong alloy material, and its thickness and diameter are precisely designed according to actual needs; a high-quality bearing is installed at the rotating connection part between the rotating shaft and the housing to reduce rotational friction and wear; the color of the pointer forms a sharp contrast with the color of the scale ring plate for easy clear observation; the detachable connection method of the stop rod adopts threaded connection or snap connection for convenient installation and adjustment; the aperture and spacing of the adjustment holes are precisely calculated and designed to meet the adjustment requirements of different tensile thresholds.

[0006] In a further embodiment, a plurality of indicator lights are stably installed inside the scale ring plate, and the indicator lights are used to display the stage of the tensile force, and the plurality of indicator lights are not connected to each other; a connecting plate is stably connected to the sliding ring plate, and the connecting plate is used to connect the plurality of indicator lights. Among them, the indicator lights can adopt high-brightness and low-power-consumption LED lights, which have the characteristics of long life and fast response; the color and brightness of the indicator lights are distinguished according to different tensile force stages, and the material of the connecting plate is a metal sheet with good electrical conductivity.

[0007] In a further embodiment, an annular groove is formed in the outer shell, and the vertical center line of the annular groove coincides with the vertical center line of the rotating shaft; a return spring is stably installed in the annular groove, and one end of the return spring contacts the annular groove; a pressing block is stably installed on the sliding ring plate, and the pressing block is located in the annular groove and is adapted to the annular groove. The pressing block contacts the other end of the return spring, and the pressing block is used to compress the return spring. The inner wall of the annular groove is smoothed to reduce the resistance when the pressing block slides; the elastic coefficient of the return spring is precisely calculated and selected to ensure that an appropriate return force can be provided.

[0008] In a further embodiment, a toothed ring is stably connected to the rotating shaft, and the vertical center line of the toothed ring coincides with the vertical center line of the rotating shaft; a toothed rod is slidably installed in the outer shell, and the toothed rod is meshed with the toothed ring. The toothed rod is used to drive the toothed ring to rotate. The tooth profiles of the toothed ring and the toothed rod are optimized to ensure the smoothness and accuracy of the transmission; the materials of the toothed ring and the toothed rod are high-strength alloy steel, which are quenched and tempered to improve hardness and wear resistance.

[0009] In a further embodiment, a stop block is located in the outer shell, and the stop block is stably connected to one end of the toothed rod; a protection spring is stably installed in the outer shell, and the protection spring is located at the end of the stop block away from the toothed rod. One end of the protection spring contacts the stop block, and the other end contacts the outer shell. The shape and size of the stop block are designed according to the movement stroke and force condition of the toothed rod; the specifications and parameters of the protection spring are selected according to the movement speed and impact force of the toothed rod.

[0010] In a further embodiment, a connecting rod is stably connected to the end of the stop block away from the toothed rod, and the horizontal center line of the connecting rod coincides with the horizontal center line of the protection spring. The other end of the connecting rod penetrates the outer shell; a pull ring is stably connected to the other end of the connecting rod, and the pull ring is used for threading a circuit; an auxiliary ring is on the same side as the pull ring, and the auxiliary ring is firmly connected to the outer shell. The auxiliary ring is used for threading a circuit, and the distance between the auxiliary ring and the outer shell is greater than the distance between the pull ring and the outer shell. The connecting rod and the pull ring are made of high-strength and well-insulated materials and need to be able to withstand sufficient tensile force.

[0011] In a further embodiment, a limit block is slidably connected to the outer shell and is stably connected to the toothed rod. The limit block is used to limit the sliding trajectory of the toothed rod. The material of the limit block is wear-resistant and has certain self-lubricating performance; the position and stroke range of the limit block are precisely set according to the working requirements of the toothed rod.

[0012] Beneficial effects: 1. Through the cooperation of multiple uniformly distributed adjustment holes on the sliding ring plate and the detachable stop rod, the purpose of flexibly adjusting the protection threshold according to different application scenarios is achieved, and the effect of effectively adapting to the needs of diverse application scenarios is achieved, avoiding equipment damage or production accidents caused by unreasonable fixed threshold settings.

[0013] 2. Through the tensile scale on the scale ring plate, multiple indicator lights, and the cooperation of the sliding ring plate, pointer, and stop rod, the purpose of providing multi-level precise warnings during tensile overload is achieved, and the effect of enabling operators to clearly and accurately grasp the tensile state, take corresponding measures in a timely manner, thereby avoiding equipment damage and ensuring production safety, while reducing unnecessary interference with the normal operation of the equipment and improving work efficiency is achieved. Brief description of the drawings

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0015] Figure 1 It is a structural schematic diagram of the present utility model.

[0016] Figure 2 It is Figure 1 the side-sectional structural schematic diagram of.

[0017] Figure 3 It is a structural schematic diagram of the rotating shaft.

[0018] Figure 4 It is Figure 1 the top-sectional structural schematic diagram of.

[0019] Figure 5 It is Figure 1 the main-sectional structural schematic diagram of.

[0020] Figure 6 It is a structural schematic diagram of the sliding ring plate.

[0021] Figure 7 It is Figure 3 the structural schematic diagram at position A of.

[0022] Figure 8 It is Figure 5 the structural schematic diagram at position B of.

[0023] The reference numerals in the figure are: 1, outer shell; 101, auxiliary ring; 102, annular groove; 2, graduated ring plate; 201, through groove; 202, indicator light; 3, rotating shaft; 301, toothed ring; 302, pointer; 4, sliding ring plate; 401, adjustment hole; 402, connecting plate; 403, extrusion block; 5, stop rod; 6, return spring; 7, stop block; 701, toothed rod; 7011, limit block; 8, protection spring; 9, connecting rod; 901, pull ring. Detailed implementation manners

[0024] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0025] By providing a protection device for tensile overload in the embodiments of the present application, the technical problems that the protection device usually has a fixed protection threshold setting, is difficult to flexibly adapt to diverse application scenarios, and has a single response and lacks multi-level warnings when tensile overload occurs are solved. In actual use, the objectives of flexible setting of the protection threshold and multi-level precise warnings are achieved.

[0026] To better understand the above technical solutions, the above technical solutions will be described in detail below in conjunction with the accompanying drawings of the specification and specific implementation manners.

[0027] Referring to Figures 1-8 , a protection device for tensile overload includes: an outer shell 1; a graduated ring plate 2; stably connected to the outer shell 1, and a tensile scale is provided on the graduated ring plate 2; a through groove 201 is opened on the graduated ring plate 2, the through groove 201 is arranged in a ring shape, and the vertical center line of the through groove 201 coincides with the vertical center line of the graduated ring plate 2; a sliding ring plate 4 is slidably connected in the outer shell 1, and the sliding ring plate 4 is located below the graduated ring plate 2, and the vertical center line of the sliding ring plate 4 coincides with the vertical center line of the graduated ring plate 2; a rotating shaft 3 is rotatably connected in the outer shell 1, and the vertical center line of the rotating shaft 3 coincides with the vertical center line of the sliding ring plate 4; a pointer 302 is arranged on the rotating shaft 3, and the pointer 302 is used to indicate the tensile scale on the graduated ring plate 2; a stop rod 5 is detachably connected to the sliding ring plate 4, and the stop rod 5 is located in the through groove 201, the height of the stop rod 5 is greater than the depth of the through groove 201, and the stop rod 5 protrudes from the lower surface of the pointer 302; a plurality of adjustment holes 401 are provided, and the plurality of adjustment holes 401 are evenly opened on the sliding ring plate 4, and the adjustment holes 401 are used to adjust the installation position of the stop rod 5.

[0028] By means of the cooperation between multiple evenly distributed adjustment holes 401 on the sliding ring plate 4 and the detachable stop lever 5, the purpose of flexibly adjusting the protection threshold according to different application scenarios is achieved.

[0029] Indicator lights 202, there are multiple of them, and the multiple indicator lights 202 are stably installed in the scale ring plate 2, and the indicator lights 202 are used to display the stage where the tensile force is located, and the multiple indicator lights 202 are not connected to each other; the connecting plate 402 is stably connected to the sliding ring plate 4, and the connecting plate 402 is used to connect the multiple indicator lights 202.

[0030] Through the stable installation of the multiple indicator lights 202 in the scale ring plate 2, the non-connection between the multiple indicator lights 202, and the stable connection and cooperation between the connecting plate 402 and the sliding ring plate 4, the effect of controlling the indicator lights 202 to display different stages according to the change of the tensile force through the connecting plate 402 is achieved, and the purpose of providing richer tensile force state information is achieved.

[0031] The annular groove 102 is opened in the housing 1, and the vertical center line of the annular groove 102 coincides with the vertical center line of the rotating shaft 3; the return spring 6 is stably installed in the annular groove 102, and one end of the return spring 6 contacts the annular groove 102; the extrusion block 403 is stably installed on the sliding ring plate 4, and the extrusion block 403 is located in the annular groove 102, and the extrusion block 403 is adapted to the annular groove 102, the extrusion block 403 contacts the other end of the return spring 6, and the extrusion block 403 is used to extrude the return spring 6.

[0032] Through the opening of the annular groove 102 in the housing 1, the stable installation of the return spring 6 in the annular groove 102, and the setting and cooperation of the extrusion block 403 on the sliding ring plate 4, the effect that the extrusion block 403 compresses the return spring 6 under the action of the tensile force and the return spring 6 pushes the sliding ring plate 4 to reset after the tensile force disappears is achieved, and the purpose of enabling the device to automatically return to the initial state is achieved.

[0033] The toothed ring 301 is stably connected to the rotating shaft 3, and the vertical center line of the toothed ring 301 coincides with the vertical center line of the rotating shaft 3; the toothed rod 701 is slidably installed in the housing 1, and the toothed rod 701 is meshed with the toothed ring 301, and the toothed rod 701 is used to drive the toothed ring 301 to rotate.

[0034] Through the stable connection between the toothed ring 301 and the rotating shaft 3, the sliding installation of the toothed rod 701 in the housing 1, and the meshing connection between the toothed rod 701 and the toothed ring 301, the effect that the sliding of the toothed rod 701 drives the toothed ring 301 to rotate so as to transmit the tensile force information is achieved, and the purpose of converting linear motion into rotational motion is achieved.

[0035] The stopper 7 is located inside the housing 1. The stopper 7 is connected to and stably connected to one end of the rack 701. The protection spring 8 is stably installed inside the housing 1, and the protection spring 8 is located at the end of the stopper 7 away from the rack 701. One end of the protection spring 8 contacts the stopper 7, and the other end contacts the housing 1.

[0036] Through the stable connection between the stopper 7 and the rack 701 and the cooperation of the installation position of the protection spring 8 inside the housing 1, when the rack 701 moves, the protection spring 8 is compressed by the stopper 7, thus achieving the effects of buffering and protection, and achieving the purpose of reducing the impact of the impact force on the device.

[0037] The connecting rod 9 is stably connected to the end of the stopper 7 away from the rack 701, and the horizontal center line of the connecting rod 9 coincides with the horizontal center line of the protection spring 8. The other end of the connecting rod 9 penetrates the housing 1. The pull ring 901 is stably connected to the other end of the connecting rod 9, and the pull ring 901 is used for threading the circuit. The auxiliary ring 101 is on the same side as the pull ring 901, and the auxiliary ring 101 is firmly connected to the housing 1. The auxiliary ring 101 is used for threading the circuit, and the distance between the auxiliary ring 101 and the housing 1 is greater than the distance between the pull ring 901 and the housing 1.

[0038] Through the stable connection between the connecting rod 9, the stopper 7 and the pull ring 901, the pull ring 901 is used for threading the circuit, and the firm connection between the auxiliary ring 101 and the housing 1, the effect of transmitting motion through the connecting rod 9 and the pull ring 901 and the auxiliary ring 101 assisting in threading and arranging the circuit is achieved, and the purpose of facilitating circuit connection and management is achieved.

[0039] The limit block 7011 is slidably connected to the housing 1, and the limit block 7011 is stably connected to the rack 701. The limit block 7011 is used for limiting the sliding trajectory of the rack 701.

[0040] Through the sliding connection between the limit block 7011 and the housing 1 and the stable connection with the rack 701, the effect of restricting the sliding trajectory of the rack 701 to ensure its accurate movement is achieved, and the purpose of ensuring the normal operation of the device is achieved.

[0041] During use, first, the wires that need to be monitored for tensile force and protected are respectively passed through the pull ring 901 and the auxiliary ring 101. When the wires are subjected to tensile force, the tensile force is transmitted to the pull ring 901. As the tensile force gradually increases, the toothed rod 701 starts to slide within the housing 1. The sliding of the toothed rod 701 drives the toothed ring 301 meshing with it to rotate, thereby causing the rotating shaft 3 to rotate and driving the pointer 302 to rotate. When the pointer 302 rotates to a certain angle, the sliding ring plate 4 is driven to move by the stop rod 5 that protrudes from the lower surface of the pointer 302. When the tensile force continues to increase, the connecting plate 402 on the sliding ring plate 4 will gradually disconnect from the indicator light 202, causing the indicator lights 202 to go out one by one to indicate the stage of the tensile force. During this process, the extrusion block 403 will squeeze the return spring 6 within the annular groove 102 to store energy. When the tensile force disappears, the return spring 6 releases energy, pushing components such as the extrusion block 403 and the sliding ring plate 4 back to their initial positions to prepare for the next tensile force monitoring and protection.

[0042] The power supply device, protection device, triggering device, signal transmission device, control system, etc. required above are all prior arts and are non-essential technical features in this application. Therefore, they are not elaborated and drawn in the documents and drawings of this application.

[0043] In summary, compared with the prior art, it has the following beneficial effects: Through the cooperation of the uniformly distributed adjustment holes on the sliding ring plate and the detachable stop rod, the protection threshold can be flexibly adjusted according to different application scenarios, effectively meeting the diverse application scenario requirements and avoiding equipment damage or production accidents caused by unreasonable fixed threshold settings; The setting of multiple indicator lights within the scale ring plate, combined with the connection between the connecting plate and the sliding ring plate, can control the indicator lights to display different stages according to the tensile force change, providing richer and more accurate tensile force status information, enabling the operator to promptly grasp the situation and take measures; During use, when the wire is subjected to tensile force, the toothed rod slides to drive the toothed ring and the rotating shaft to rotate, the pointer indicates the magnitude of the tensile force, the stop rod drives the sliding ring plate to move, the connecting plate disconnects from the indicator light to make the lights go out one by one to indicate the tensile force stage, the extrusion block squeezes the return spring to store energy, and after the tensile force disappears, the spring resets to push the components back to their initial positions to prepare for the next monitoring and protection.

[0044] This utility model covers any substitutions, modifications, equivalent methods, and solutions made within the essence and scope of this utility model. To enable the public to have a thorough understanding of this utility model, specific details are elaborated in the above preferred embodiments of this utility model. However, those skilled in the art can fully understand this utility model without the description of these details. Additionally, to avoid unnecessary confusion to the essence of this utility model, well-known methods, processes, procedures, components, and circuits are not elaborated in detail.

[0045] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A tensile overload protection device, characterized in that: include: Housing (1); A scale ring plate (2) is stably connected to the housing (1), and the scale ring plate (2) is provided with a tension scale; A through groove (201) is formed on the scale ring plate (2), the through groove (201) being arranged in a ring shape, and a vertical center line of the through groove (201) coincides with a vertical center line of the scale ring plate (2); A sliding ring plate (4) is slidably connected in the housing (1), and the sliding ring plate (4) is located below the scale ring plate (2), and the vertical center line of the sliding ring plate (4) coincides with the vertical center line of the scale ring plate (2); A rotating shaft (3) is rotatably connected in the housing (1), and a vertical center line of the rotating shaft (3) coincides with a vertical center line of the sliding ring plate (4); A pointer (302) is arranged on the rotating shaft (3), and the pointer (302) is used to indicate the tension scale on the scale ring plate (2); A blocking rod (5) is detachably connected to the sliding ring plate (4), and the blocking rod (5) is located in the through groove (201). The height of the blocking rod (5) is greater than the depth of the through groove (201), and the blocking rod (5) is higher than the lower surface of the pointer (302); A plurality of adjustment holes (401) are provided, and the plurality of adjustment holes (401) are evenly arranged on the sliding ring plate (4), and the adjustment holes (401) are used to adjust the installation position of the blocking rod (5).

2. The tension overload protection device according to claim 1, characterized in that: Also includes: Indicator lights (202), a plurality of which are provided, and the plurality of indicator lights (202) are stably mounted in the scale ring plate (2), and the indicator lights (202) are used to display the stage of the tension, and the plurality of indicator lights (202) are not connected to each other; The connecting plate (402) is stably connected to the sliding ring plate (4), and the connecting plate (402) is used to connect the plurality of indicator lights (202).

3. The tension overload protection device according to claim 1, characterized in that: Also includes: An annular groove (102) is formed in the housing (1), and a vertical center line of the annular groove (102) coincides with a vertical center line of the rotating shaft (3); A return spring (6) is stably mounted in the annular groove (102), and one end of the return spring (6) is in contact with the annular groove (102); The extrusion block (403) is stably mounted on the sliding ring plate (4), and the extrusion block (403) is located in the annular groove (102). The extrusion block (403) is adapted to the annular groove (102), and the extrusion block (403) is in contact with the other end of the return spring (6). The extrusion block (403) is used to extrude the return spring (6).

4. The tension overload protection device according to claim 1, characterized in that: Also includes: A gear ring (301) is stably connected to the rotating shaft (3), and a vertical center line of the gear ring (301) coincides with a vertical center line of the rotating shaft (3); The gear rod (701) is slidably mounted in the housing (1), and the gear rod (701) is meshingly connected with the gear ring (301), and the gear rod (701) is used to drive the gear ring (301) to rotate.

5. The tension overload protection device according to claim 4, characterized in that: Also includes: A stopper (7) is located in the housing (1), and the stopper (7) is stably connected to one end of the gear rod (701); A protection spring (8) is stably mounted in the housing (1), and the protection spring (8) is located at an end of the stopper (7) away from the gear rod (701), one end of the protection spring (8) is in contact with the stopper (7), and the other end is in contact with the housing (1).

6. The tension overload protection device according to claim 5, characterized in that: Also includes: A connecting rod (9) is stably connected to one end of the stopper (7) away from the gear rod (701), and the horizontal center line of the connecting rod (9) coincides with the horizontal center line of the protection spring (8), and the other end of the connecting rod (9) passes through the housing (1); A pull ring (901) is stably connected to the other end of the connecting rod (9), and the pull ring (901) is used to pass through the wiring; The auxiliary ring (101) is located on the same side as the pull ring (901), and the auxiliary ring (101) is firmly connected to the outer shell (1). The auxiliary ring (101) is used to pass through the wiring, and the distance between the auxiliary ring (101) and the outer shell (1) is greater than the distance between the pull ring (901) and the outer shell (1).

7. The tension overload protection device according to claim 4, characterized in that: Also includes: The limit block (7011) is slidably connected to the housing (1), and the limit block (7011) is stably connected to the gear rod (701), and the limit block (7011) is used to limit the sliding trajectory of the gear rod (701).

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