Conveying chain tensioning force monitoring device and chain conveying mechanism

Abstract

The utility model provides a conveying chain tensioning force monitoring device and a chain conveying mechanism. The conveying chain tensioning force monitoring device comprises a screw rod, a marker, and a push block, a first nut, a fixed seat and a limiting piece which are sequentially arranged on the screw rod in a penetrating manner, the push block, the first nut and the limiting piece are fixedly connected with the screw rod, the fixed seat is in sliding connection with the screw rod, a spring is arranged between the first nut and the fixed seat, and the marker is arranged on the screw rod. At the beginning, the spring is in a compressed state, the limiting piece and the fixing base are arranged at intervals, and the marker is close to the spring to mark whether the length of the spring changes or not. According to the utility model, the change of the tensioning force of the conveying chain is intuitively shown through the length change of the spring, whether the conveying chain becomes loose can be known by observing whether the length of the spring is changed, the change of the tensioning force can be monitored in real time, and abnormal conditions can be found in time; high-frequency monitoring can be carried out according to needs, and the tensioning force can be better monitored.

Description

Technical Field

[0001] This utility model belongs to the field of vehicles, specifically relating to a conveyor chain tension monitoring device and a chain conveying mechanism. Background Technology

[0002] Chain conveyor systems are tools used in vehicle assembly workshops to operate other equipment. A chain conveyor system consists of a conveyor chain, which may slack during operation. Since the tension of the conveyor chain affects transmission performance and lifespan, it is necessary to check whether the tension of the conveyor chain meets the requirements.

[0003] To check whether the tension of the conveyor chain is appropriate, existing technology uses a method of periodic manual inspection. Specifically, when the chain conveyor mechanism is stopped, two inspectors pull the chain up with great force and use a torque scale to measure whether the tension of the chain is appropriate. This method of manually monitoring the tension periodically cannot detect changes in the chain tension in a timely manner, and cannot detect whether the conveyor chain is loose in a timely manner. Utility Model Content

[0004] This invention provides a conveyor chain tension monitoring device and a chain conveying mechanism to solve the problem that existing technologies cannot monitor changes in tension in a timely manner.

[0005] To solve the above-mentioned technical problems, this utility model provides a conveyor chain tension monitoring device. The conveyor chain tension monitoring device includes a screw, a marker, and a push block, a first nut, a fixed seat, and a limiting member sequentially mounted on the screw. The push block, the first nut, and the limiting member are fixedly connected to the screw, and the fixed seat is slidably connected to the screw. A spring is provided between the first nut and the fixed seat. Initially, the spring is in a compressed state, and the limiting member is spaced apart from the fixed seat. The marker is positioned close to the spring to indicate whether the length of the spring has changed.

[0006] Furthermore, the marker is a movable marker, one end of which is fixedly connected to the first nut. Initially, the other end of the movable marker abuts against the side of the fixed seat near the first nut. The movable marker is used to move along the length of the screw under the action of the spring.

[0007] Furthermore, the movable marker is a sleeve, the spring is located inside the sleeve, one end of the sleeve is fixedly connected to the first nut, and initially, the other end of the sleeve abuts against the side of the fixed seat near the first nut.

[0008] Furthermore, the movable marker is a connecting rod, which is set along the length of the spring and located outside the spring. One end of the connecting rod is fixedly connected to the first nut, and initially, the other end of the connecting rod abuts against the side of the fixed seat near the first nut.

[0009] Furthermore, the length of the active marker is L.标 L 标 =Lo-L 链 ×C / k, where Lo is the length of the spring in its natural state, L 链 Let C be the initial length of the conveyor chain, C be the tension coefficient at the end of the conveyor chain, and k be the spring constant.

[0010] Furthermore, the conveyor chain tension monitoring device includes a fixed plate, a fixed marker, and a fixed base.

[0011] Furthermore, the fixed marker is a scale with graduations. In the initial state, the zero mark of the scale is flush with the end of the spring closest to the fixed seat.

[0012] Furthermore, the distance between the limiting member and the fixed seat is less than or equal to the compression length of the spring in the initial state.

[0013] Furthermore, the limiting component is a second nut.

[0014] This utility model also provides a chain conveying mechanism, which includes a conveying chain, a fixing component, a tensioning wheel, and a conveying chain tension monitoring device according to this utility model. The conveying chain is wound around the tensioning wheel, and the fixing seat in the conveying chain tension monitoring device is fixedly installed on the fixing component. The push block in the conveying chain tension monitoring device is fixedly connected to the tensioning wheel.

[0015] Initially, the tension wheel, push block, and screw are balanced by the spring force and the tension of the conveyor chain. When the conveyor chain loosens, the spring force exceeds the tension of the conveyor chain, causing the spring to extend and push against the first nut. The first nut, screw, push block, and tension wheel then move away from the fixed base under the spring force, causing the tension wheel to tighten against the conveyor chain. By observing the spring extension and comparing it with the initial length, it can be determined whether the conveyor chain has loosened. This invention visually represents the change in the tension of the conveyor chain through the change in the spring length. Simply observing the change in spring length is enough to determine if the conveyor chain has loosened. It offers good real-time performance, allowing for real-time monitoring of tension changes and timely detection of abnormalities. High-frequency monitoring can be performed as needed for better control of the tension. It can also promptly identify potential problems and provide early warnings, helping to prevent equipment failures.

[0016] In addition, this utility model also has an automatic adjustment function. When the conveyor chain is slack, the spring force is automatically released, and the first nut drives the screw and tension wheel to move in the direction of tightening the chain, thereby tightening the conveyor chain. This realizes the function of automatically adjusting the tension when the conveyor chain is slack. Even if the chain is somewhat slack, the spring can still provide a certain tension to ensure the normal operation of the equipment.

[0017] Furthermore, this invention uses the change in spring length to objectively reflect whether the chain is loose, resulting in objective and accurate inspection results. This avoids the influence of human factors and provides more precise test results. At the same time, the inspection results are objective and unaffected by subjective factors, ensuring the consistency of the test results.

[0018] Furthermore, this invention allows for manual observation of whether the spring length changes to determine if the chain is slack, reducing manual downtime for inspection, lowering labor intensity, and improving work efficiency; saving manpower and time costs; improving reliability by reducing human error and ensuring the stability of testing; and ensuring safety by reducing the risk of manual operation in hazardous environments.

[0019] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the chain conveyor mechanism according to an embodiment of the present utility model;

[0021] Figure 2 This is a top view of the chain conveyor mechanism according to an embodiment of the present utility model;

[0022] Figure 3 This is a schematic diagram of the conveyor chain tension monitoring device according to an embodiment of the present invention;

[0023] Figure 4 for Figure 3 Exploded view of the conveyor chain tension monitoring device;

[0024] Figure 5 This is a schematic diagram showing the parameters of the spring in an embodiment of the present invention.

[0025] In the diagram: 1. Conveyor chain tension monitoring device; 11. Screw; 12. Push block; 13. First nut; 14. Movable marker; 15. Fixed seat; 16. Limiting component; 17. Spring; 2. Tensioning wheel; 3. Connecting shaft; 4. Fixed plate; 5. Conveyor chain. Detailed Implementation

[0026] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the specific implementation methods and effects of this utility model will be described in detail below with reference to the accompanying drawings and preferred embodiments.

[0027] In this specification, various systems, structures, and devices are schematically depicted in the accompanying drawings for illustrative purposes only. Not all features of actual systems, structures, and devices are described; for example, well-known functions or structures are not described in detail to avoid unnecessary detail that could obscure the invention. It should be understood that in any practical application, numerous implementation decisions are required to achieve the specific goals of the developer or user, and to comply with system-related and industry-related limitations, which may vary depending on the specific application. Furthermore, it should be understood that while such implementation decisions are complex and time-consuming, they are routine tasks for those skilled in the art who will benefit from this invention.

[0028] Unless otherwise required by the content, the word "comprising" will be interpreted in an open-ended, inclusive sense throughout the following description and claims, such as "including but not limited to".

[0029] Throughout this specification, the reference to the term "an embodiment" means that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. Therefore, the phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0030] In the description of the embodiments of this utility model, the terms "first", "second", etc. are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features.

[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "connection" and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] Figure 1 This is a schematic diagram of the chain conveyor mechanism according to an embodiment of the present utility model; Figure 2 This is a top view of the chain conveyor mechanism according to an embodiment of the present utility model; Figure 3 This is a schematic diagram of the conveyor chain tension monitoring device 1 according to an embodiment of the present invention; Figure 4 for Figure 3 An exploded view of the conveyor chain tension monitoring device 1.

[0033] According to one aspect of the present invention, a conveyor chain tension monitoring device 1 is provided, such as... Figures 1 to 4 As shown, the conveyor chain tension monitoring device 1 includes a screw 11, a push block 12, a first nut 13, a fixed seat 15, and a limiting member 16. The push block 12, the first nut 13, the fixed seat 15, and the limiting member 16 are sequentially mounted on the screw 11. The push block 12 is fixedly connected to the screw 11 and is used to fixally connect to the tension wheel 2 to drive the tension wheel 2 to move. The fixed seat 15 is slidably connected to the screw 11. The first nut 13 and the limiting member 16 are both fixedly connected to the screw 11. A spring 17 is provided between the first nut 13 and the fixed seat 15. Initially, the spring 17 is in a compressed state, and the limiting member 16 is spaced apart from the fixed seat 15. A marker is placed near the spring 17 to mark whether the length of the spring 17 has changed.

[0034] like Figure 3 and Figure 4 As shown, during initial installation, since the tension wheel 2, push block 12, and screw 11 are fixedly connected, they can be considered as a whole. Initially, this whole is balanced by the elastic force of spring 17 and the tension force of the conveyor chain 5. When the conveyor chain 5 loosens, the spring 17 becomes greater than the tension force of the conveyor chain 5, causing spring 17 to extend and push against the first nut 13. The whole consisting of the first nut 13, screw 11, push block 12, and tension wheel 2 moves away from the fixed seat 15 under the elastic force of spring 17, causing tension wheel 2 to press against the conveyor chain 5. By observing the extension of spring 17 with a marker and comparing it with its initial length, it can be determined whether the conveyor chain 5 has loosened. This invention visually represents the change in the tension force of the conveyor chain 5 through the change in the length of spring 17. Simply observing whether the length of spring 17 changes is sufficient to determine whether the conveyor chain 5 has loosened.

[0035] It has good real-time performance, enabling real-time monitoring of tension force changes and timely detection of abnormalities; it can perform high-frequency monitoring as needed for better monitoring of tension force; it can detect potential problems in a timely manner and provide early warnings, which helps prevent equipment failures.

[0036] In addition, this utility model also has an automatic adjustment function. When the conveyor chain 5 is slack, the elastic force of the spring 17 is automatically released, and the first nut 13 drives the screw 11 and the tension wheel 2 to move in the direction of tightening the chain, thereby tightening the conveyor chain 5. This realizes the function of automatically adjusting the tension when the conveyor chain 5 is slack. Even if the chain is slack to a certain extent, the spring 17 can still provide a certain tension to ensure the normal operation of the equipment.

[0037] Furthermore, this invention uses the change in the length of spring 17 to objectively reflect whether the chain is loose, resulting in objective and accurate inspection results. This avoids the influence of human factors and provides more precise test results. At the same time, the inspection results are objective and unaffected by subjective factors, ensuring the consistency of the test results.

[0038] Furthermore, this invention allows for manual observation of whether the length of the spring 17 changes to determine if the chain is slack, reducing manual downtime for inspection, lowering labor intensity, and improving work efficiency; saving manpower and time costs; improving reliability by reducing human error and ensuring the stability of the test; and ensuring safety by reducing the risk of manual operation in hazardous environments.

[0039] In addition, this utility model has the advantage of complete data recording: it can systematically record data, which is convenient for analysis and traceability.

[0040] The marker can be any structure that indicates whether the length of the spring 17 has changed.

[0041] There are multiple ways to achieve the sliding of the screw 11 relative to the fixed base 15. In one embodiment of this utility model, the fixed base 15 is provided with a smooth through hole, and the screw 11 passes through the through hole.

[0042] In one embodiment of this utility model, see Figure 3 and Figure 4 The marker is a movable marker 14, meaning its position can change. One end of the movable marker 14 is fixedly connected to the first nut 13. Initially, the other end of the movable marker 14 abuts against the side of the fixed seat 15 near the first nut 13. The movable marker 14 is used to move along the length of the screw 11 under the action of the spring 17. Initially, there is no gap between the other end of the movable marker 14 and the fixed seat 15. When the conveyor chain 5 becomes loose, the spring 17 pushes the first nut 13, and the first nut 13 drives the movable marker 14 to move away from the fixed seat 15. Then, a gap gradually forms between the other end of the movable marker 14 and the fixed seat 15. By observing whether there is a gap between the other end of the movable marker 14 and the fixed seat 15, it can be determined whether the conveyor chain 5 has become loose. In this embodiment, the change in the length of the spring 17 is expressed through the gap between the movable marker 14 and the fixed seat 15, which makes it easier for the user to observe and to detect whether the chain is loose in a timely manner.

[0043] In one embodiment of this utility model, the movable marker 14 is a sleeve, such as... Figure 3 and Figure 4As shown, spring 17 is located inside the sleeve, one end of which is fixedly connected to the first nut 13. Initially, the other end of the sleeve abuts against the side of the fixed seat 15 near the first nut 13. When a gap is created between the sleeve and the fixed seat 15, in other words, when part of the spring 17, which was originally located inside the sleeve, is exposed outside the sleeve, it indicates that the spring 17 has become longer and the conveyor chain 5 has become loose.

[0044] In one embodiment of this utility model, the movable marker 14 is a connecting rod, which is arranged along the length of the spring 17 and located outside the spring 17. One end of the connecting rod is fixedly connected to the first nut 13, and initially, the other end of the connecting rod abuts against the side of the fixed seat 15 near the first nut 13. In this embodiment, the movable marker 14 is rod-shaped. By observing whether a gap is formed between the free end of the connecting rod and the fixed seat 15, it can be determined whether the conveyor chain 5 has become loose.

[0045] In one embodiment of this utility model, the length of the active marker 14 is L. 标 In this embodiment, the length of the movable marker 14 refers to the length of the movable marker 14 in the direction parallel to the screw 11, and the length of the movable marker 14 is L. 标 L 标 =Lo-L 链 ×C / k, where Lo is the length of spring 17 in its natural state, L 链 Let C be the initial length of the conveyor chain 5, C be the tension coefficient at the end of the conveyor chain 5, and k be the elastic coefficient of the spring 17.

[0046] This embodiment provides a method for calculating the length of the active marker 14, see [link to documentation]. Figure 5 The details are as follows:

[0047] First, calculate the elastic force of spring 17 using Hooke's Law: F 弹 =kx;F 弹 The restoring force of spring 17 is represented by k, the spring constant of spring 17 is represented by x, and the elongation or compression of spring 17 is represented by x.

[0048] See Figure 5 The spring constant k of the circular spring 17 is calculated as follows:

[0049]

[0050] The meaning of each term in the formula is as follows: G is the shear modulus of spring 17 [unit MPa, psi] (the value of G is generally 178000 for steel wire springs and 177200 for stainless steel springs); d is the wire diameter of spring 17 [unit mm]; n is the effective number of coils of spring 17 [unit coils]; D is the center diameter of spring 17 [unit mm]; k is the spring constant of spring 17 [unit kg / mm].

[0051] Secondly, calculate the pretension force of conveyor chain 5. The formula for calculating the pretension force F_chain of conveyor chain 5 is: F_chain 链 =L 链 ×C, the unit N of the F chain, where L 链 denoted by , where is the initial length (m) of conveyor chain 5, and C represents the tension coefficient at the end of conveyor chain 5.

[0052] The specific value depends on the type and tensioning method of the conveyor chain 5. The commonly used end tension coefficients of the conveyor chain 5 are as follows: manually tensioned conveyor chain 5: C = 0.02~0.03; spring-tensioned conveyor chain 5: C = 0.05~0.15; hydraulically or pneumatically tensioned conveyor chain 5: C = 0.1~0.2.

[0053] Finally, based on the fact that the restoring force of spring 17 is equal to the tension force of the chain, F 链 =F 弹 The compression of spring 17, x, can be obtained, x = L 链 ×C / k.

[0054] The length L of the active marker 14 (e.g., sleeve) 标 L 标 =Lo-x=Lo-L 链 ×C / k, Lo represents the initial length of spring 17, that is, the length of spring 17 in its natural state.

[0055] According to the range of pretension force values ​​of conveyor chain 5, the deformation length of spring 17 meets the range of pretension force, X = [x1, x2], where X is the length range value that provides pretension force; x1 is the maximum compression size of spring 17, and x2 is the minimum compression size of spring 17.

[0056] During operation, the conveyor chain 5 needs to maintain a certain tension. This is because the transmission conveyor chain 5 undergoes bending and elastic deformation during operation. Without proper tension, the conveyor chain 5 may experience phenomena such as chain detachment or chain slippage, affecting the normal operation of the machine. The tension of the transmission conveyor chain 5 is affected by factors such as the weight of the conveyor chain 5 itself, the working load, and the speed, and should be calculated according to specific circumstances.

[0057] In one embodiment of this utility model, such as Figure 1 and Figure 2As shown, the conveyor chain tension monitoring device 1 includes a fixed plate 4, a fixed marker, and a fixed base 15.

[0058] The fixed marker can be any structure that can indicate whether the length of the spring 17 has changed, such as a ruler, a color block, or other indicating graphics. By observing the change in position between the end of the spring 17 away from the fixed seat 15 and the fixed marker, it can be determined whether the spring 17 has elongated.

[0059] In one embodiment of this utility model, the fixed marker is a graduated ruler. The length of the spring 17 can be read through the ruler. Initially, the spring 17 has an initial length. When the conveyor chain 5 becomes loose, the side length of the spring 17 automatically tightens against the conveyor chain 5, at which point the length of the spring 17 will be greater than the initial length. Therefore, the change in the length of the spring 17 can be observed through the ruler, and it can also be intuitively determined whether the conveyor chain 5 has become loose.

[0060] In one embodiment of this utility model, in the initial state, the zero mark of the scale is flush with the end of the spring 17 near the fixed seat 15. Since the fixed seat 15 is fixed, the side of the spring 17 near the fixed seat 15 remains in contact with the fixed seat 15 and remains stationary. When the end of the spring 17 away from the fixed seat 15 moves, the corresponding value on the scale changes. Therefore, it is possible to more intuitively and conveniently observe whether the length of the spring 17 has changed, and thus determine whether the conveyor chain 5 has become loose.

[0061] In another embodiment of this utility model, in the initial state, the zero mark of the scale is flush with the end of the spring 17 away from the fixed base 15. When the end of the spring 17 away from the fixed base 15 moves, the end of the spring 17 away from the fixed base 15 will not be aligned with the zero mark, and at this time it can also be determined whether the length of the spring 17 has changed.

[0062] The limiting member 16 can be any component that abuts against the fixed seat 15 to block the movement of the screw 11, such as a stop or a baffle.

[0063] As the spring 17 gradually lengthens, the spring 17 on one side of the fixed seat 15 pushes the first nut 13. The first nut 13 drives the movable marker 14 to move away from the fixed seat 15. The limiting member 16 on the other side of the fixed seat 15 moves toward the fixed seat 15 under the drive of the screw 11. The gap between the limiting member 16 and the fixed seat 15 gradually decreases. When the limiting member 16 contacts the fixed seat 15, the fixed seat 15 blocks the nut from continuing to move, and thus the screw 11 can no longer move.

[0064] In one embodiment of this utility model, the distance between the limiting member 16 and the fixed seat 15 is equal to the compressed length of the spring 17 in the initial state. When the limiting member 16 abuts against the fixed seat 15, it indicates that the elastic force of the spring 17 has been released, and the spring 17 can no longer apply a pushing force to the tensioning wheel 2. At this time, the conveyor chain 5 can be adjusted, for example, by cutting off a section of the conveyor chain 5, to achieve the purpose of tensioning the conveyor chain 5. Alternatively, the tension monitoring device 1 can be adjusted to further push the tensioning wheel 2.

[0065] In one embodiment of this utility model, the limiting member 16 is a second nut. When the screw 11 gradually moves until the limiting member 16 abuts against the fixed seat 15, the tension can be adjusted. The specific adjustment method is as follows: rotate the second nut away from the fixed seat 15 to create a certain gap between it and the fixed seat 15 (see...). Figure 3 The first nut 13 rotates towards the fixed seat 15 to recompress the spring 17. As the spring 17 is compressed, the thrust of the spring 17 on the first nut 13, screw 11, push block 12, and tension wheel 2 increases, causing the tension wheel 2 to press against the conveyor chain 5, thus achieving the function of adjusting the tension force. Because the spring 17 stores energy, when the chain becomes loose, the spring 17 can automatically release its elastic force to press against the tension wheel 2, achieving the function of automatically adjusting the tension force. In one embodiment of this utility model, after adjustment, the distance between the second nut and the fixed seat 15 is equal to the compressed length of the spring 17 after this adjustment.

[0066] The distance between the limiting member 16 and the fixed base 15 can also be less than the compression length of the spring 17 in the initial state, that is, the initial compression length of the spring 17. When the limiting member 16 abuts against the fixed base 15, it indicates that the elastic force of the spring 17 has been released to the set level, and there is still a certain amount of elastic force.

[0067] This utility model also provides a chain conveyor mechanism, see [link to relevant documentation]. Figure 1 and Figure 2 The chain conveying mechanism includes a conveying chain 5, a fixing component, a tensioning wheel 2, and a conveying chain tension monitoring device 1 according to the present invention. The conveying chain 5 is wound around the tensioning wheel 2. The fixing seat 15 in the conveying chain tension monitoring device 1 is fixedly installed on the fixing component. The push block 12 in the conveying chain tension monitoring device 1 is fixedly connected to the tensioning wheel 2.

[0068] The fixing assembly includes two fixing plates 4, see Figure 2 The tensioning wheel 2 is located between two fixed plates 4, and passes through the connecting shaft 3. One end of the connecting rod is fixedly connected to the push block 12 in one of the conveyor chain tension monitoring devices 1, and the other end of the connecting shaft 3 is fixedly connected to the push block 12 in the other conveyor chain tension monitoring device 1 (e.g., Figure 2 (As shown).

[0069] In one embodiment of this utility model, there are two tensioning wheels 2, such as... Figure 2 As shown, when the two tensioning wheels 2 move closer to each other, the conveyor chain 5 is tensioned; there are four conveyor chain tension monitoring devices 1, with two on each side of the fixed assembly. The two conveyor chain tension monitoring devices 1 connected to the same tensioning wheel 2 are the conveyor chain tension monitoring devices 1 of this utility model, while the other two conveyor chain tension monitoring devices 1 can be the original fixed type conveyor chain tension monitoring devices 1 without the adjustment function of spring 17.

[0070] The chain conveyor mechanism may include two conveyor chains 5, each conveyor chain 5 having two tensioning wheels 2, and each tensioning wheel 2 being connected to two conveyor chain tension monitoring devices 1.

[0071] It should be noted that this utility model may include any feature or combination of features or generalization thereof implied or expressly disclosed herein, and is not limited to any of the defined scopes listed above. Any elements, features and / or structural arrangements described herein may be combined in any suitable manner.

[0072] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A conveyor chain tension monitoring device, characterized by, The device comprises a screw rod, a marker, and a push block, a first nut, a fixed seat and a limiting piece which are sequentially arranged on the screw rod, the push block, the first nut and the limiting piece are fixedly connected with the screw rod, the fixed seat is slidably connected with the screw rod, a spring is arranged between the first nut and the fixed seat, the spring is in a compressed state at the beginning and the limiting piece is arranged at a distance from the fixed seat, and the marker is arranged close to the spring to mark whether the length of the spring changes.

2. The conveyor chain take-up force monitoring device of claim 1, wherein, The marker is a movable marker, one end of the movable marker is fixedly connected with the first nut, at the beginning, the other end of the movable marker abuts against one side of the fixed seat close to the first nut, and the movable marker is used to move along the length direction of the screw rod under the action of the spring.

3. The conveyor chain take-up force monitoring device of claim 2, wherein, The movable marker is a sleeve, the spring is arranged in the sleeve, one end of the sleeve is fixedly connected with the first nut, and at the beginning, the other end of the sleeve abuts against one side of the fixed seat close to the first nut.

4. The conveyor chain take-up force monitoring apparatus of claim 2, wherein, The movable marker is a connecting rod, the connecting rod is arranged along the length direction of the spring and outside the spring, one end of the connecting rod is fixedly connected with the first nut, and at the beginning, the other end of the connecting rod abuts against one side of the fixed seat close to the first nut.

5. The conveyor chain take-up force monitoring device of any one of claims 2-4, wherein, The length of the active marker is L 标 , L 标 = Lo - L 链 × C / k, where Lo is the length of the spring in the natural state, L 链 is the initial length of the conveyor chain, C is the end-rise coefficient of the conveyor chain, and k is the spring constant.

6. The conveyor chain take-up force monitoring device of claim 1, wherein, The device comprises a fixed plate, the marker is a fixed marker, and the marker is fixedly arranged on the fixed plate, and the fixed seat is fixedly arranged on the fixed plate.

7. The conveyor chain tension monitoring device of claim 6, wherein, The fixed marker is a scale with scales, and at the beginning, the zero scale line of the scale is flush with one end of the spring close to the fixed seat.

8. The conveyor chain take-up force monitoring apparatus of claim 1, wherein, The distance between the limiting piece and the fixed seat is less than or equal to the compressed length of the spring at the beginning.

9. The conveyor chain take-up force monitoring apparatus of claim 1, wherein, The limiting piece is a second nut.

10. A chain conveyor mechanism characterized by, The device comprises a conveying chain, a fixed assembly, a tensioning wheel and a conveying chain tensioning force monitoring device according to any one of claims 1-9, the conveying chain is wound on the tensioning wheel, the fixed seat in the conveying chain tensioning force monitoring device is fixedly arranged on the fixed assembly, and the push block in the conveying chain tensioning force monitoring device is fixedly connected with the tensioning wheel.

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