Protection device of drag chain equipment

Abstract

The invention provides a protection device of drag chain equipment, and relates to the technical field of drag chain equipment, the protection device comprises chain plate assemblies, the tops and the bottoms of the two chain plate assemblies are connected through a plurality of upper connecting strips and lower connecting strips respectively, and bunching assemblies used for fixing cables are arranged between the upper connecting strips and the lower connecting strips; the rocker arm is horizontally arranged at the top of the upper connecting strip, the microswitch is horizontally arranged on the rocker arm, the chain plate assemblies at the two ends are fixed through the upper connecting strip and the lower connecting strip, the cable, the upper connecting strip and the lower connecting strip are fixedly protected through the protection assembly, the rocker arm is fixed through the upper connecting strip, and the rocker arm and the upper connecting strip are horizontally arranged in parallel. In the moving process of the drag chain, when the chain plate assembly drives the upper connecting strip, the rocker arm and the microswitch to hunch up, and the rocker arm and the microswitch hunch up to a certain height, the protection switch is triggered in time to act, the chain is interlocked to stop running equipment, the drag chain is prevented from being pulled abnormally, and therefore the drag chain is protected against damage.

Description

Technical Field

[0001] The present invention relates to the technical field of drag chain equipment, and in particular to a protective device for drag chain equipment. Background Art

[0002] The car dumper, re-adjuster, car transfer platform and air conditioner in coal-fired power plants need to move back and forth during coal unloading. Therefore, the power cables and control cables need to be able to move with the equipment, while ensuring that the cables are not damaged or broken during movement.

[0003] Therefore, cable drag chains are often used in electrical equipment such as car tippers, car transfer platforms, and air conditioners. They effectively protect the cables of car transfer platforms, car transfer platforms, and air conditioners during movement, allowing them to safely follow the movement of the equipment.

[0004] However, the following problems exist in the use of cable drag chains: due to the long-term, high-frequency return movement of the cable drag chain and the large amount of dust on site, the links of the drag chain are worn and dust accumulates, which will cause the drag chain to get stuck during the process of rolling up or lying down, causing the drag chain to arch and tip over the cable trough box. If it is not discovered in time, the cable will be directly broken by the equipment, seriously endangering the safe and stable operation of the tipping machine equipment. Summary of the invention

[0005] The invention provides a protection device for a drag chain device, which is used to solve the defects in the prior art.

[0006] The present invention provides a protection device for a drag chain equipment, comprising: a chain plate assembly, wherein the tops and bottoms of two groups of chain plate assemblies are respectively connected by a plurality of upper connecting bars and a lower connecting bar, a wiring harness assembly for fixing cables is arranged between the upper connecting bars and the lower connecting bars, a protection assembly is arranged on the outer side of the upper connecting bar, and the protection device comprises a rocker arm, wherein the rocker arm is horizontally arranged on the top of the upper connecting bar, and a micro switch is horizontally arranged on the rocker arm.

[0007] Preferably, the chain plate assembly comprises a plurality of wide chain plates and narrow chain plates, and the plurality of wide chain plates and the narrow chain plates are hinged at intervals to form a group of chain plate assemblies.

[0008] Preferably, the wiring harness assembly includes a screw rod, which is vertically rotatably arranged between the upper connecting bar and the lower connecting bar, an adjusting nut is arranged at one end of the screw rod extending out of the upper connecting bar, two moving blocks are symmetrically arranged on the screw rod, and the thread directions of the two moving blocks are opposite to those of the screw connecting part, a fixing plate is fixedly arranged between the upper connecting bar and the lower connecting bar, a half gear is symmetrically rotatably arranged on the fixing plate, a clamping claw is arranged on the half gear, teeth are arranged on the side of the moving block facing the clamping claw, and the moving block is meshingly connected with the half gear.

[0009] Preferably, it also includes a maintenance component, which is arranged on the outside of the chain plate assembly and the lower connecting bar. The maintenance component includes a correction module and a chain track module. The correction module is arranged on the outside of the two groups of chain plate assemblies, and the two groups of chain plate assemblies and the lower connecting bar are slidably arranged on the top of the chain track module.

[0010] Preferably, the chain track mechanism comprises a slide rail, a slide groove is provided in the slide rail, a rotating shaft is provided in the slide groove for horizontal rotation, and a plurality of rollers are provided on the rotating shaft.

[0011] Preferably, the correction module includes a support seat, two of the support seats are respectively arranged on both sides of the drag chain, a plurality of sleeve columns are arranged on the side of the support seat facing the drag chain, a slide plate is slidably arranged in the sleeve column, a buffer spring is arranged between the slide plate and the sleeve column, a sliding column is fixedly arranged on the right side of the slide plate, a buffer plate is fixedly arranged on the side of the sliding column facing the drag chain, a plurality of ball grooves are arranged in the side of the buffer plate facing the drag chain, a rotating ball is arranged in the ball groove, and the rotating ball is attached to the outer side of the chain plate assembly.

[0012] Preferably, an alarm module is used to sound an alarm;

[0013] A first calculation module is used to calculate the maximum tension that the drag chain can withstand based on the friction coefficient of the lower connecting bar, the friction coefficient of the wide chain piece, the friction coefficient of the narrow chain piece, the number of lower connecting bars, the number of wide chain pieces, the number of narrow chain pieces, the weight of the lower connecting bar and the upper connecting bar, the weight of the wide chain piece, the weight of the narrow chain piece, the resistance coefficient of the lower connecting bar, the resistance coefficient of the wide chain piece, the resistance coefficient of the narrow chain piece, the total length of the drag chain, and the friction coefficient of the drag chain;

[0014] The second calculation module is used to calculate the actual safety factor of the drag chain during operation based on the breaking tension between the wide chain and the narrow chain, the total number of wide chain and the narrow chain, and the uneven distribution coefficient of the wide chain and the narrow chain, where ∈ is the dynamic tension coefficient;

[0015] A processing module, used for comparing the second calculation module obtained by the second calculation module with the standard safety factor of the drag chain;

[0016] A recording module, used for recording and saving data of the first calculation module, the second calculation module, and the processing module;

[0017] The control system is electrically connected to the power supply of the device. The control system controls the alarm module to sound an alarm and controls the power switch of the device based on the results calculated by the first calculation module and the second calculation module.

[0018] Preferably, the calculation module 1 calculates based on the following formula 1:

[0019]

[0020] F y is the maximum tension that the drag chain can withstand, K1 is the friction coefficient of the lower and upper connecting bars, K2 is the friction coefficient of the wide chain, K3 is the friction coefficient of the narrow chain, n is the number of lower connecting bars, y is the number of wide chain, x is the number of narrow chain, m1 is the weight of the lower and upper connecting bars, m2 is the weight of the wide chain, m3 is the weight of the narrow chain, C1 is the resistance coefficient of the lower connecting bar, C2 is the resistance coefficient of the wide chain, C3 is the resistance coefficient of the narrow chain, l is the total length of the drag chain, and γ is the friction coefficient of the drag chain;

[0021] The calculation module 2 is calculated based on the following formula 2:

[0022]

[0023] i Actual safety factor during operation of the energy chain, F P The breaking tension between the wide chain and the narrow chain, n is the total number of wide and narrow chain, τ is the coefficient of uneven distribution of the lower connecting bar, wide chain, narrow chain, ∈ is the dynamic tension coefficient,

[0024] When i≥i b When the safety factor of the drag chain is qualified, it continues to work;

[0025] when i<i b When the safety factor of the drag chain fails to meet the requirements, the equipment will be stopped;

[0026] i b is the standard safety factor of the drag chain. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 It is a schematic diagram of the overall structure provided by an embodiment of the present invention;

[0029] Figure 2 is a schematic diagram of a top view structure provided by an embodiment of the present invention;

[0030] Figure 3 is a schematic structural diagram of a wiring harness assembly provided by an embodiment of the present invention;

[0031] Figure 4It is a schematic diagram of the overall structure of the maintenance component provided by an embodiment of the present invention.

[0032] Reference numerals:

[0033] 1. Chain plate assembly; 11. Wide chain plate; 12. Narrow chain plate; 2. Upper connecting bar; 3. Lower connecting bar; 4. Wiring assembly; 41. Screw; 42. Adjusting nut; 43. Moving block; 44. Fixed plate; 45. Half gear; 46. Clamp; 5. Protection assembly; 51. Rocker arm; 52. Micro switch; 6. Maintenance assembly; 61. Chain track module; 611. Slide rail; 612. Slide groove; 613. Rotating shaft; 614. Roller; 62. Correction module; 621. Support seat; 622. Bushing; 623. Slide plate; 624. Buffer spring; 625. Slide column; 626. Buffer plate; 627. Ball groove; 628. Rotating ball. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are 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.

[0035] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions and technical features between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0036] The present invention provides the following embodiments

[0037] Example 1

[0038] The embodiment of the present invention provides a protection device for a drag chain device, such as Figure 1As shown, it includes: a chain plate assembly 1, the tops and bottoms of the two groups of chain plate assemblies 1 are respectively connected by multiple upper connecting bars 2 and lower connecting bars 3, a wiring harness assembly 4 for fixing cables is arranged between the upper connecting bars 2 and the lower connecting bars 3, a protection assembly 5 is arranged on the outer side of the upper connecting bar 2, and the protection device includes a rocker arm 51, the rocker arm 51 is horizontally arranged on the top of the upper connecting bar 2, and a micro switch 52 is horizontally arranged on the rocker arm 51.

[0039] The working principle and beneficial effects of the above technical scheme are as follows: the upper connecting bar 2 and the lower connecting bar 3 fix the chain plate assemblies 1 at both ends, the protection assembly 5 fixes the cable to the upper connecting bar 2 and the lower connecting bar 3 for protection, the upper connecting bar 2 fixes the rocker arm 51, the rocker arm 51 is placed horizontally and parallel to the upper connecting bar 2, and a micro switch 52 is arranged on the rocker arm 51. During the movement of the drag chain, when the chain plate assembly 1 drives the upper connecting bar 2, the rocker arm 51 and the micro switch 52 to arch, when the rocker arm 51 and the micro switch 52 arch to a certain height, the protection switch is triggered in time to interlock and stop the running equipment to prevent the drag chain from being abnormally pulled, thereby protecting the drag chain from damage and reducing production costs.

[0040] Example 2

[0041] On the basis of Example 1, Figure 4 As shown, the chain plate assembly 1 includes a plurality of wide chain plates 11 and a narrow chain plate 12 , and the plurality of wide chain plates 11 and the narrow chain plates 12 are hinged at intervals to form a group of chain plate assemblies 1 .

[0042] The working principle and beneficial effects of the above technical solution are as follows: the two ends of the wide chain piece 11 are hinged to the narrow chain piece 12, and the two ends of the narrow chain piece 12 are hinged to the wide chain piece 11, which facilitates the wide chain piece 11 and the narrow chain piece 12 to carry objects while ensuring the flexibility between the wide chain piece 11 and the narrow chain piece 12, and also facilitates replacement and repair when a wide chain piece 11 or a narrow chain piece 12 is damaged.

[0043] Example 3

[0044] On the basis of Example 2, Figure 4As shown, the wiring harness assembly 4 includes a screw 41, which is vertically rotatably arranged between the upper connecting bar 2 and the lower connecting bar 3, and an adjusting nut 42 is arranged at one end of the screw 41 extending out of the upper connecting bar 2, and two moving blocks 43 are symmetrically arranged on the screw 41, and the thread directions of the two moving blocks 43 and the connecting parts of the screw 41 are opposite, and a fixing plate 44 is fixedly arranged between the upper connecting bar 2 and the lower connecting bar 3, and a half gear 45 is symmetrically rotatably arranged on the fixing plate 44, and a clamping claw 46 is arranged on the half gear 45, and teeth are arranged on the side of the moving block 43 facing the clamping claw 46, and the moving block 43 is meshingly connected with the half gear 45.

[0045] The working principle and beneficial effects of the above technical solution are as follows: the upper connecting bar 2 and the lower connecting bar 3 limit the rotation of the screw 41, and the screw 41 arranged between the upper connecting bar 2 and the lower connecting bar 3 is driven to rotate by adjusting the rotation of the adjusting thread. When the screw 41 rotates, the two moving blocks 43 on the screw 41 are opposite to the thread direction of the connecting part of the screw 41, and the two moving blocks 43 move toward or away from each other on the screw 41. The upper connecting bar 2 and the lower connecting bar 3 fix the fixed plate 44, and the half gear 45 and the clamping jaw 46 rotate freely on the fixed plate 44. The two moving blocks 43 mesh with the two half gears 45. When the two moving blocks 43 move toward or away from each other on the screw 41, the two clamping jaws 46 are driven to open and close. The opened and closed clamping jaws 46 clamp the cable passing therethrough, thereby fixing and protecting the cable.

[0046] Example 4

[0047] On the basis of Example 3, Figure 4 As shown, it also includes a maintenance component 6, which is arranged on the outside of the chain plate component 1 and the lower connecting bar 3. The maintenance component 6 includes a correction module 62 and a chain track module 61. The correction module 62 is arranged on the outside of the two groups of chain plate components 1, and the two groups of chain plate components 1 and the lower connecting bar 3 are slidably arranged on the top of the chain track module 61.

[0048] The working principle and beneficial effects of the above technical solution are as follows: the maintenance component 6 limits the outer sides of the chain plate components 1 and the lower connecting bar 3 for protection, the deviation correction module 62 limits the deviation correction and guides the two sides of the two groups of chain plate components 1 to prevent the two groups of chain plate components 1 from deflecting during movement and causing equipment damage in the event of an accident, and the chain track module 61 lays tracks for the two groups of chain plate components 1 and the lower connecting bar 3 during movement, converting sliding friction into rolling friction, reducing the friction between the bottom of the two groups of chain plate components 1 and the lower connecting bar 3 and the bottom surface, reducing the loss of the bottom of the two groups of chain plate components 1 and the lower connecting bar 3, and also reducing the heat generated by friction, thereby preventing the equipment from being damaged due to overheating.

[0049] Example 5

[0050] On the basis of Example 4, Figure 4 As shown, the chain track mechanism includes a slide rail 611, a slide groove 612 is provided in the slide rail 611, a rotating shaft 613 is provided in the slide groove 612 for horizontal rotation, and a plurality of rollers 614 are provided on the rotating shaft 613.

[0051] The working principle and beneficial effects of the above technical solution are as follows: the slide rail 611 provides sliding support for the entire device, the slide rail 611 provides rotation limit for the rotating shaft 613, the rotating shaft 613 and multiple rollers 614 rotate in the slide groove 612, and the rollers 614 provide rolling support for the two groups of chain plate assemblies 1 and the lower connecting bar 3.

[0052] Example 6

[0053] On the basis of Example 5, Figure 4 As shown, the correction module 62 includes a support seat 621, and the two support seats 621 are respectively arranged on both sides of the drag chain, and a plurality of sleeves 622 are arranged on the side of the support seat 621 facing the drag chain, a slide plate 623 is slidably arranged in the sleeve 622, and a buffer spring 624 is arranged between the slide plate 623 and the sleeve 622, a sliding column 625 is fixedly arranged on the right side of the slide plate 623, and a buffer plate 626 is fixedly arranged on the sliding column 625 facing the side of the drag chain, and a plurality of ball grooves 627 are arranged in the buffer plate 626 facing the side of the drag chain, and a rotating ball 628 is arranged in the ball groove 627, and the rotating ball 628 is attached to the outer side of the chain plate assembly 1.

[0054] The working principle and beneficial effects of the above technical solution are as follows: the support seat 621 stably supports the deviation correction module 62, one side of the support seat 621 fixes and limits the sleeve column 622, a slide plate 623 is slidably arranged in the sleeve column 622, the slide plate 623 moves horizontally left and right in the sleeve column 622, and the slide plate 623 drives the slide column 625 and the buffer plate 626 to move horizontally when moving, and the buffer spring 624 buffers the movement between the slide plate 623 and the inner wall of the sleeve column 622, thereby reducing the impact force between the slide plate 623 and the inner wall of the sleeve column 622, and the ball groove 626 in the buffer plate 626 is provided. 27 limits the rotating balls 628 to prevent the rotating balls 628 from falling during rotation. The portion of the rotating balls 628 exposed outside the ball grooves 627 is in contact with the outer side of the chain plate assembly 1. The wide chain plates 11 on the chain plate assembly 1 are in contact with the rotating balls 628 during movement. The rotating balls 628 on both sides limit the rolling of the wide chain plates 11 on both sides to prevent the drag chain from deflecting during movement, resulting in accidents and equipment damage. The spherical shape of the rotating balls 628 increases the limiting freedom of the wide chain plates 11, making the limiting direction slightly loose, which can partially buffer the limiting impact force in other directions.

[0055] Example 7

[0056] On the basis of Example 6, Figure 4 As shown, an alarm module is used to issue an alarm;

[0057] A first calculation module is used to calculate the maximum tension that the drag chain can withstand based on the friction coefficient of the lower connecting bar, the friction coefficient of the wide chain piece, the friction coefficient of the narrow chain piece, the number of lower connecting bars, the number of wide chain pieces, the number of narrow chain pieces, the weight of the lower connecting bar and the upper connecting bar, the weight of the wide chain piece, the weight of the narrow chain piece, the resistance coefficient of the lower connecting bar, the resistance coefficient of the wide chain piece, the resistance coefficient of the narrow chain piece, the total length of the drag chain, and the friction coefficient of the drag chain;

[0058] The second calculation module is used to calculate the actual safety factor of the drag chain during operation based on the breaking tension between the wide chain and the narrow chain, the total number of wide chain and the narrow chain, and the uneven distribution coefficient of the wide chain and the narrow chain, where ∈ is the dynamic tension coefficient;

[0059] A processing module, used for comparing the second calculation module obtained by the second calculation module with the standard safety factor of the drag chain;

[0060] A recording module, used for recording and saving data of the first calculation module, the second calculation module, and the processing module;

[0061] The control system is electrically connected to the power supply of the device. The control system controls the alarm module to sound an alarm and controls the power switch of the device based on the results calculated by the first calculation module and the second calculation module.

[0062] The working principle and beneficial effects of the above technical solution are as follows: the alarm module is used to issue an alarm, the first calculation module is used to calculate the maximum tension that the drag chain can withstand based on the friction coefficient of the lower connecting bar, the friction coefficient of the wide chain piece, the friction coefficient of the narrow chain piece, the number of lower connecting bars, the number of wide chain pieces, the number of narrow chain pieces, the weight of the lower connecting bar and the upper connecting bar, the weight of the wide chain piece, the weight of the narrow chain piece, the resistance coefficient of the lower connecting bar, the resistance coefficient of the wide chain piece, the resistance coefficient of the narrow chain piece, the total length of the drag chain, and the friction coefficient of the drag chain; the second calculation module is used to calculate the maximum tension that the drag chain can withstand based on the breaking tension between the wide chain piece and the narrow chain piece. force, the total number of wide and narrow chains, the uneven distribution coefficient of wide and narrow chains, ∈ is the dynamic tension coefficient to calculate the actual safety factor of the drag chain during operation, the processing module is used to compare the second calculation module obtained by the second calculation module with the standard safety factor of the drag chain, the recording module is used to record and save the data of the first calculation module, the second calculation module and the processing module, the control system is connected to the power supply of the device through an electrical signal, and the control system controls the alarm module to issue an alarm and control the power switch of the device based on the results calculated by the first calculation module and the second calculation module.

[0063] Example 8

[0064] On the basis of Example 7, Figure 4 As shown, the calculation module 1 calculates based on the following formula 1:

[0065]

[0066] F y is the maximum tension that the drag chain can withstand, K1 is the friction coefficient of the lower and upper connecting bars, K2 is the friction coefficient of the wide chain, K3 is the friction coefficient of the narrow chain, n is the number of lower connecting bars, y is the number of wide chain, x is the number of narrow chain, m1 is the weight of the lower and upper connecting bars, m2 is the weight of the wide chain, m3 is the weight of the narrow chain, C1 is the resistance coefficient of the lower connecting bar, C2 is the resistance coefficient of the wide chain, C3 is the resistance coefficient of the narrow chain, l is the total length of the drag chain, and γ is the friction coefficient of the drag chain;

[0067] The calculation module 2 is calculated based on the following formula 2:

[0068]

[0069] i Actual safety factor during operation of the energy chain, F P The breaking tension between the wide chain and the narrow chain, n is the total number of wide and narrow chain, τ is the coefficient of uneven distribution of the lower connecting bar, wide chain, narrow chain, ∈ is the dynamic tension coefficient,

[0070] When i≥i b When the safety factor of the drag chain is qualified, it continues to work;

[0071] when i<i b When the safety factor of the drag chain fails to meet the requirements, the equipment will be stopped;

[0072] i b is the standard safety factor of the drag chain.

[0073] The working principle and beneficial effects of the above technical solution are: Calculate the maximum tension that the drag chain can withstand, by Calculate the actual safety factor of the drag chain by comparing the actual safety factor when the drag chain is running with the standard safety factor of the drag chain. When the actual safety factor when the drag chain is running is greater than or equal to the standard safety factor of the drag chain, the drag chain's safety factor is qualified and continues to work. When the actual safety factor when the drag chain is running is less than the standard safety factor of the drag chain, the drag chain's safety factor is unqualified and the power supply of the equipment is cut off to stop the equipment operation.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A protective device for a drag chain device, characterized in that: include: A chain plate assembly (1), wherein the tops and bottoms of two groups of the chain plate assemblies (1) are connected respectively by a plurality of upper connecting bars (2) and lower connecting bars (3); a cable harness assembly (4) for fixing cables is arranged between the upper connecting bars (2) and the lower connecting bars (3); a protective assembly (5) is arranged on the outer side of the upper connecting bars (2); the protective device comprises a rocker arm (51); the rocker arm (51) is horizontally arranged on the top of the upper connecting bar (2); and a micro switch (52) is horizontally arranged on the rocker arm (51).

2. A protection device for a drag chain device according to claim 1, characterized in that: The chain plate assembly (1) comprises a plurality of wide chain plates (11) and narrow chain plates (12); the plurality of wide chain plates (11) and the narrow chain plates (12) are hingedly connected at intervals to form a group of chain plate assemblies (1).

3. A protection device for a drag chain device according to claim 2, characterized in that: The harness assembly (4) comprises a screw rod (41), wherein the screw rod (41) is vertically rotatably arranged between the upper connecting bar (2) and the lower connecting bar (3), an adjusting nut (42) is arranged at one end of the screw rod (41) extending out of the upper connecting bar (2), two moving blocks (43) are symmetrically arranged on the screw rod (41), and the thread directions of the two moving blocks (43) and the connecting parts of the screw rod (41) are opposite, a fixing plate (44) is fixedly arranged between the upper connecting bar (2) and the lower connecting bar (3), a half gear (45) is symmetrically rotatably arranged on the fixing plate (44), a clamping claw (46) is arranged on the half gear (45), a tooth is arranged on the side of the moving block (43) facing the clamping claw (46), and the moving block (43) is meshingly connected with the half gear (45).

4. A protection device for a drag chain device according to claim 1, characterized in that: The invention also comprises a maintenance component (6), wherein the maintenance component (6) is arranged on the outer side of the chain plate component (1) and the lower connecting bar (3), and the maintenance component (6) comprises a correction module (62) and a chain track module (61), wherein the correction module (62) is arranged on the outer side of the two groups of the chain plate components (1), and the two groups of the chain plate components (1) and the lower connecting bar (3) are slidably arranged on the top of the chain track module (61).

5. A protection device for a drag chain device according to claim 4, characterized in that: The chain rail mechanism comprises a slide rail (611), a slide groove (612) is provided in the slide rail (611), a rotating shaft (613) is provided in the slide groove (612) for horizontal rotation, and a plurality of rollers (614) are provided on the rotating shaft (613).

6. A protection device for a drag chain device according to claim 5, characterized in that: The deviation correction module (62) comprises a support seat (621), wherein two support seats (621) are respectively arranged on both sides of the drag chain, and a plurality of sleeves (622) are arranged on the side of the support seat (621) facing the drag chain, a slide plate (623) is slidably arranged in the sleeve (622), a buffer spring (624) is arranged between the slide plate (623) and the sleeve (622), a sliding post (625) is fixedly arranged on the right side of the slide plate (623), a buffer plate (626) is fixedly arranged on the side of the sliding post (625) facing the drag chain, and a plurality of ball grooves (627) are arranged in the side of the buffer plate (626) facing the drag chain, and a rotating ball (628) is arranged in the ball groove (627), and the rotating ball (628) is attached to the outer side of the chain plate assembly (1).

7. A protection device for a drag chain device according to claim 6, characterized in that: An alarm module, used for issuing an alarm; A first calculation module is used to calculate the maximum tension that the drag chain can withstand based on the friction coefficient of the lower connecting bar, the friction coefficient of the wide chain piece, the friction coefficient of the narrow chain piece, the number of lower connecting bars, the number of wide chain pieces, the number of narrow chain pieces, the weight of the lower connecting bar and the upper connecting bar, the weight of the wide chain piece, the weight of the narrow chain piece, the resistance coefficient of the lower connecting bar, the resistance coefficient of the wide chain piece, the resistance coefficient of the narrow chain piece, the total length of the drag chain, and the friction coefficient of the drag chain; The second calculation module is used to calculate the actual safety factor of the drag chain during operation based on the breaking tension between the wide chain and the narrow chain, the total number of wide chain and the narrow chain, and the uneven distribution coefficient of the wide chain and the narrow chain, where ∈ is the dynamic tension coefficient; A processing module, used for comparing the second calculation module obtained by the second calculation module with the standard safety factor of the drag chain; A recording module, used for recording and saving data of the first calculation module, the second calculation module, and the processing module; The control system is electrically connected to the power supply of the device. The control system controls the alarm module to sound an alarm and controls the power switch of the device based on the results calculated by the first calculation module and the second calculation module.

8. A protection device for a drag chain device according to claim 7, characterized in that: The calculation module 1 calculates based on the following formula 1: F y is the maximum tension that the drag chain can withstand, K1 is the friction coefficient of the lower and upper connecting bars, K2 is the friction coefficient of the wide chain, K3 is the friction coefficient of the narrow chain, n is the number of lower connecting bars, y is the number of wide chain, x is the number of narrow chain, m1 is the weight of the lower and upper connecting bars, m2 is the weight of the wide chain, m3 is the weight of the narrow chain, C1 is the resistance coefficient of the lower connecting bar, C2 is the resistance coefficient of the wide chain, C3 is the resistance coefficient of the narrow chain, l is the total length of the drag chain, and γ is the friction coefficient of the drag chain; The calculation module 2 is calculated based on the following formula 2: i Actual safety factor during operation of the energy chain, F P The breaking tension between the wide chain and the narrow chain, n is the total number of wide and narrow chain, τ is the coefficient of uneven distribution of the lower connecting bar, wide chain, narrow chain, ∈ is the dynamic tension coefficient, When i≥i b When the safety factor of the drag chain is qualified, it continues to work; when i<i b When the safety factor of the drag chain fails to meet the requirements, the equipment will be stopped; i b is the standard safety factor of the drag chain.

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