A device for ensuring the safety of a coal conveying system in a thermal power plant

Abstract

This application discloses a device for ensuring the safety of a coal conveying system in a thermal power plant, mainly comprising a base assembly, a buffer assembly, a receiving assembly, and an early warning assembly. The base assembly is located below the device. The buffer assembly includes a damping cylinder, a spring, and a damping plate. The receiving assembly is fixedly connected to the damping plate via a vertical shaft. The early warning assembly provides early warning of the spring's condition. When the spring's elasticity decreases due to prolonged use, the receiving assembly moves downwards with the spring, and the protruding button on the early warning assembly presses the push-button switch, triggering the alarm assembly to emit an audible and visual alarm, facilitating timely location and replacement of the failed spring. This application significantly improves the real-time monitoring efficiency of spring conditions in the coal conveying system, effectively ensuring the operational safety and reliability of the coal conveying system in thermal power plants.

Description

Technical Field

[0001] This disclosure relates to the field of coal transportation technology, and in particular to a device for ensuring the safety of coal conveying systems in thermal power plants. Background Technology

[0002] Coal is the most abundant and widely distributed fossil fuel on Earth. Coal conveying systems are commonly used in thermal power plants to transport coal. Springs are typically installed to cushion the coal during transport. However, in actual operation, these springs gradually lose elasticity over time, and there is a lack of monitoring methods. This not only significantly weakens the protective effect on the coal but also directly impacts the normal and safe operation of the coal conveying system in thermal power plants.

[0003] Therefore, there is an urgent need to provide a device that can monitor the changes in spring elasticity in real time and issue an alarm signal in a timely manner when the elasticity decreases, so as to effectively ensure the safe and stable operation of the coal conveying system of thermal power plants. Utility Model Content

[0004] This disclosure provides an apparatus for ensuring the safety of a coal conveying system in a thermal power plant, thereby addressing the aforementioned problems. The apparatus includes:

[0005] The base assembly mainly includes a base plate, and the base assembly is disposed below the device;

[0006] The buffer assembly includes a damping cylinder, a spring, and a damping plate; wherein,

[0007] The number of damping cylinders is at least four, and they are disposed above the base assembly;

[0008] The spring is disposed inside the damping cylinder, and the lower end of the spring contacts the bottom surface of the damping cylinder.

[0009] The damping plate is disposed on the upper end of the spring, and the damping plate is slidably connected to the inner wall of the damping cylinder;

[0010] The receiving assembly mainly includes a receiving plate, which is disposed above the damping plate, and the receiving plate and the damping plate are fixedly connected by a vertical shaft;

[0011] The warning component includes a marker, a raised button, and a push-button switch. The warning component is disposed between the damping cylinder and the receiving plate to provide warning of the spring state.

[0012] In some embodiments, the lower end of the marker is fixedly connected to the damping cylinder, the protruding button is disposed at the top of the marker, and the push-button switch is disposed on the lower side of the receiving plate.

[0013] In some embodiments, the marker, the protruding button, and the push-button switch are arranged on the same vertical line. When the receiving assembly moves down to a predetermined position as the spring elasticity decreases, the protruding button presses the push-button switch.

[0014] In some embodiments, at least a limiting component is included, the limiting component mainly includes a groove block, the number of the groove blocks is two, the groove blocks are symmetrically arranged above the damping cylinder, and the groove blocks have an insertion port on the side facing the center of the damping cylinder.

[0015] In some embodiments, the limiting component further includes a limiting rod that is adapted to the slot block and is inserted into the slot of the slot block.

[0016] In some embodiments, when the limiting rod in the limiting assembly is inserted into the inside of the socket, a limiting abutment portion extends from the inner side of the limiting rod. The limiting abutment portion is adapted to the damping plate. When the damping plate moves upward to a preset position, it abuts against the limiting abutment portion of the limiting rod. A grip portion for easy insertion and removal is provided on the outer side of the limiting rod.

[0017] In some embodiments, at least an alarm component is included, the alarm component comprising a control unit, a power supply unit, and an alarm alarm unit; wherein...

[0018] The control unit and the alarm unit are electrically connected;

[0019] The power supply unit provides power to the control unit and the alarm unit.

[0020] In some embodiments, the alarm component and the warning component are electrically connected. When the convex button presses the button switch, the control unit receives the electrical signal transmitted by the warning component, and the control unit controls the alarm unit to issue an audible and visual alarm.

[0021] In some embodiments, a manual assistance component is provided on the upper side of the receiving component. The manual assistance component mainly includes auxiliary handles, which are symmetrically arranged on the upper side of the receiving component and there are at least two auxiliary handles.

[0022] The grip part of the auxiliary handle is cylindrical and has a rough knurled surface.

[0023] The above-mentioned technical solutions adopted in the embodiments of this disclosure can achieve the following beneficial effects: When the spring's elasticity decreases due to long-term use, the receiving component moves downward with the spring, and the protruding button of the early warning component presses the button switch, triggering the alarm component to emit an audible and visual alarm, facilitating timely location of the spring in a failed state. When replacing the spring, the limiting rod can be pulled out to release the limiting of the damping plate, allowing the damping plate to detach from the damping cylinder, making it easy to remove the spring installed under the damping plate for replacement. This application significantly improves the efficiency of real-time monitoring of the spring status in the coal conveying system and the convenience of spring replacement, reducing equipment damage or production interruption caused by the failure to detect spring failure in a timely manner, and effectively ensuring the operational safety of the coal conveying system in thermal power plants.

[0024] It should be understood that both the foregoing general description and the following detailed description are exemplary and intended to provide further illustration of the claimed technology. Attached Figure Description

[0025] The above and other objects, features, and advantages of this disclosure will become more apparent from the more detailed description of the embodiments thereof in conjunction with the accompanying drawings. The drawings are provided to further illustrate the embodiments of this disclosure and form part of the specification. They are used together with the embodiments of this disclosure to explain the disclosure and do not constitute a limitation thereof. In the drawings, the same reference numerals generally represent the same components or steps.

[0026] Figure 1 This schematic diagram illustrates the overall external structure of a device for ensuring the safety of a coal conveying system in a thermal power plant according to an embodiment of the present disclosure.

[0027] Figure 2 This schematic diagram illustrates a partial cross-sectional view of a device for ensuring the safety of a coal conveying system in a thermal power plant according to an embodiment of the present disclosure.

[0028] Figure 3 This illustration schematically depicts an apparatus for ensuring the safety of a coal conveying system in a thermal power plant according to an embodiment of the present disclosure. Figure 2 A magnified view of the structure at point A in the middle;

[0029] Figure 4 This schematically illustrates a circuit connection block diagram of a device for ensuring the safety of a coal conveying system in a thermal power plant according to an embodiment of the present disclosure;

[0030] Figure 5 This illustration schematically shows an alarm triggering flowchart of a device for ensuring the safety of a coal conveying system in a thermal power plant according to an embodiment of the present disclosure;

[0031] Figure 6 This schematically illustrates a spring replacement flowchart of a device for ensuring the safety of a coal conveying system in a thermal power plant according to an embodiment of the present disclosure;

[0032] In the diagram: 101, base assembly; 102, buffer assembly; 103, receiving assembly; 104, early warning assembly; 105, limit assembly; 106, alarm assembly; 107, manual assistance assembly; 1, base plate; 2, damping cylinder; 3, spring; 4, damping plate; 5, receiving plate; 6, vertical shaft; 7, auxiliary handle; 8, groove block; 9, limit rod; 10, marker; 11, protruding button; 12, push button switch; 13, control unit; 14, power supply unit; 15, alarm unit. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this disclosure more apparent, exemplary embodiments according to this disclosure will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this disclosure, and not all embodiments of this disclosure. It should be understood that this disclosure is not limited to the exemplary embodiments described herein.

[0034] like Figures 1 to 3 As shown, this application provides a device for ensuring the safety of a coal conveying system in a thermal power plant, including a base assembly 101, a buffer assembly 102, a receiving assembly 103, an early warning assembly 104, a limit assembly 105, an alarm assembly 106, and a manual assistance assembly 107.

[0035] The base assembly 101 mainly includes a base plate 1, which provides a stable foundation support for the entire device.

[0036] The buffer assembly 102 includes damping cylinders 2, springs 3, and damping plates 4. At least four damping cylinders 2 are mounted on the base assembly 101, and each damping cylinder 2 has a cylindrical cavity. Springs 3 are disposed within the cavities of the damping cylinders 2, with their lower ends contacting the bottom surface of the cavities and their upper ends connected to the damping plates 4. The damping plates 4 are circular, positioned above the springs 3, and slidably connected to the inner wall of the damping cylinders 2. A vertical shaft 6 is mounted on the damping plates 4.

[0037] The receiving assembly 103 mainly includes a receiving plate 5, which is a horizontal rectangular metal plate. It is set above the damping plate 4 and is fixedly connected to the damping plate 4 by a vertical shaft 6. The upper surface of the receiving plate 5 is provided with a manual auxiliary assembly 107.

[0038] The warning component 104 includes a marker 10, a protruding button 11, and a push-button switch 12, and is disposed between the damping cylinder 2 and the receiving plate 5 to provide warnings about the state of the spring 3. The lower end of the marker 10 is fixedly connected to the damping cylinder 2, the protruding button 11 is disposed at the top of the marker 10, and the push-button switch 12 is disposed on the lower side of the receiving plate 5. The marker 10, the protruding button 11, and the push-button switch 12 are all arranged on the same vertical line.

[0039] The limiting component 105 includes a slot block 8 and a limiting rod 9. There are two slot blocks 8, symmetrically arranged above the damping cylinder 2, each with a slot facing the center of the damping cylinder 2. The limiting rod 9 is adapted to the slot block 8, inserting into the slot of the slot block 8. Its inner side extends into a limiting abutment portion, and its outer side has a grip portion for easy insertion and removal.

[0040] The alarm component 106 includes a control unit 13, a power supply unit 14, and an alarm unit 15. The control unit 13 and the alarm unit 15 are electrically connected, the power supply unit 14 provides power to the control unit 13 and the alarm unit 15, and the alarm component 106 is electrically connected to the warning component 104.

[0041] The manual assistance component 107 mainly includes an auxiliary handle 7, which is symmetrically arranged on the upper side of the receiving component 103, and there is at least one pair of auxiliary handles 7.

[0042] Figure 1 The diagram illustrates the external overall structure of a device for ensuring the safety of a coal conveying system in a thermal power plant according to an embodiment of the present disclosure.

[0043] like Figure 1 As shown, the device has an overall vertical structure. At the bottom of the device is the base assembly 101, which mainly includes a horizontally positioned base plate 1. The base plate 1 is cast from a high-strength material. Preferably, carbon steel or cast iron can be used. The thickness of the base plate 1 is not less than 10mm, but the thickness can be flexibly adjusted according to requirements. The base plate 1 provides a stable foundation support for the entire device.

[0044] A damping cylinder 2 is provided on the upper surface of the base plate 1. The number of damping cylinders 2 is at least four. The damping cylinders 2 are fixed to the upper surface of the base plate 1 by welding or bolting. The position and layout of the damping cylinders 2 are set according to the number of damping cylinders 2 and the actual needs of coal buffering. When there are four damping cylinders 2, they are symmetrically arranged at the four corners to form a rectangular layout.

[0045] The receiving plate 5 is connected to the damping cylinder 2 via a vertical shaft 6. The upper end of the vertical shaft 6 is fixedly connected to the receiving plate 5; preferably, this connection can be achieved using bolts. The lower end of the vertical shaft 6 is inserted into the damping cylinder 2. The receiving plate 5 is a horizontal rectangular metal plate, and its dimensions are larger than the outer contour of the array of damping cylinders 2. The receiving plate 5 directly supports the falling coal. A manual auxiliary component 107 is provided on the upper surface of the receiving plate 5, mainly including at least one pair of auxiliary handles 7 symmetrically arranged on the upper surface of the receiving plate 5. The gripping part of the auxiliary handle 7 is cylindrical with a rough knurled surface for easy handling by the operator.

[0046] The alarm assembly 106 includes a control unit 13, a power supply unit 14, and an alarm unit 15. The control unit 13 is mounted on the side wall of the base plate 1, and the power supply unit 14 and alarm unit 15 are adjacent to the control unit 13 and fixedly mounted on the side wall of the base plate 1. The control unit 13 controls the power supply unit 14 and alarm unit 15. Specifically, when the control unit 13 receives an electrical signal transmitted from the alarm assembly, it controls the alarm unit 15 to alert the operator to replace the spring 3 promptly through an audible and visual alarm. The power supply unit 14 supplies power to the control unit 13 and alarm unit 15.

[0047] In some embodiments, the control unit 13 is provided with a box-shaped structure, and a cavity is provided inside the box-shaped structure. The power supply unit 14 and the alarm unit 15 are disposed in the cavity of the control unit 13, forming a structure in which the control unit 13, the power supply unit 14 and the alarm unit 15 are integrated.

[0048] Figure 2 The illustration shows a partial cross-sectional structural diagram of a device for ensuring the safety of a coal conveying system in a thermal power plant according to an embodiment of the present disclosure.

[0049] like Figure 2 As shown, the damping cylinder 2 has an internal cavity with a cylindrical structure. The diameter of the damping cylinder 2 matches the outer diameter of the damping plate 4, ensuring that the damping plate 4 can slide vertically within the cavity of the damping cylinder 2. The depth of the cavity of the damping cylinder 2 is determined based on the free length and maximum compression of the spring 3.

[0050] Spring 3 is disposed inside the cavity of damping cylinder 2. The lower end of spring 3 contacts the inner bottom surface of damping cylinder 2 and provides upward elastic force with the inner bottom surface of damping cylinder 2 as support. The upper end of spring 3 is connected to damping plate 4 and supports damping plate 4 upward. Spring 3 is made of high-strength alloy material and has good elasticity and fatigue resistance. The free length of spring 3 is determined according to the design load of coal conveying system to ensure that under normal operating conditions, spring 3 can absorb the impact energy of falling coal through compression deformation.

[0051] The damping plate 4 has a circular structure and is made of high-strength, wear-resistant material. Preferably, the damping plate 4 can be made of cast iron with a thickness of not less than 10mm, or the thickness of the damping plate 4 can be determined based on the design load of the coal conveying system. A vertical shaft 6 is provided on the damping plate 4, and the load of the vertical shaft 6 is evenly transmitted to the spring 3 below through the damping plate 4.

[0052] The vertical shaft 6 is made of high-strength material, preferably carbon structural steel, with a diameter typically not less than 30mm. The diameter can also be determined based on the design load of the coal conveying system. The upper end of the vertical shaft 6 is fixedly connected to the bottom surface of the receiving plate 5 via bolts, while the lower end of the vertical shaft 6 is inserted into the cavity of the damping cylinder 2 and connected to the damping plate 4, forming a rigid force transmission structure. The axis of the vertical shaft 6 is coaxial with the axis of the damping cylinder 2 to ensure that the lateral friction between the damping plate 4 and the damping cylinder 2 is minimized when the vertical shaft 6 transmits loads, thereby guaranteeing the rigidity and reliability of the load transmission path and the long service life of the structure.

[0053] The receiving plate 5 is a horizontally positioned rectangular metal plate, with all four sides larger than the outer contour of the array formed by the damping cylinders 2, to completely cover the coal's falling area and prevent falling coal from affecting the normal operation of the device. The upper surface of the receiving plate 5 has multiple crisscrossing anti-slip grooves to effectively prevent coal from sliding on it. The lower surface of the receiving plate 5 is bolted to the upper end of the vertical shaft 6 to ensure reliable load transmission. When coal falls and impacts the receiving plate 5, the impact force is directly transmitted through the vertical shaft 6 to the damping plate 4 and the spring 3 below it, thus buffering and absorbing the impact energy of the falling coal.

[0054] Auxiliary handles 7 are symmetrically arranged on the receiving plate 5, and each receiving plate 5 has at least one pair of auxiliary handles 7. The auxiliary handles 7 provide a reliable force application position for the operator to hold easily during the installation, maintenance and spring replacement of the device.

[0055] Figure 3 This illustration schematically depicts an apparatus for ensuring the safety of a coal conveying system in a thermal power plant according to an embodiment of the present disclosure. Figure 2 A magnified view of the structure at point A in the middle.

[0056] like Figure 3 As shown, the outer diameter of the damping plate 4 matches the inner diameter of the damping cylinder 2, ensuring that the damping plate 4 slides vertically within the cavity of the damping cylinder 2 without lateral swaying. The upper surface of the damping plate 4 is connected to the vertical shaft 6, and the lower surface of the damping plate 4 is connected to the spring 3. The upper end of the vertical shaft 6 is rigidly connected to the receiving plate 5 by bolts. The vertical shaft 6 and the axis of the damping cylinder 2 are strictly coaxial. When the receiving plate 5 is subjected to the impact force of falling coal, the impact force of the coal is evenly transmitted to the damping plate 4 through the vertical shaft 6, and then the damping plate 4 moves downward to compress the spring 3, so that the impact force is buffered and absorbed by the compression of the spring 3.

[0057] Above the damping cylinder 2, symmetrical slots 8 are arranged on both sides. Each slot 8 has an insertion port on the side facing the cavity of the damping cylinder 2. This insertion port is adapted to a limiting rod 9 for insertion. After being inserted into the insertion port of the slot 8, the limiting rod 9 extends horizontally into the cavity of the damping cylinder 2, forming a limiting abutment. This limiting abutment is adapted to the damping plate 4. When the damping plate 4 moves upward to a predetermined position, it restricts further upward movement, preventing excessive stretching of the spring 3 and ensuring the normal and reliable operation of the protection device. The outer side of the limiting rod 9 has a grip with anti-slip texture. Operators can quickly insert and remove the limiting rod 9 through the grip to release the limiting of the damping plate 4, allowing the damping plate 4 to disengage from the cavity of the damping cylinder 2 for easy replacement of the spring 3.

[0058] The marker 10 is vertically fixed to the top of the damping cylinder 2. A protruding button 11 is provided at the top of the marker 10, and a push-button switch 12 is installed at the corresponding position on the lower side of the receiving plate 5. All three are strictly aligned on the same vertical line. Under normal operating conditions, the elasticity of the spring 3 keeps the push-button switch 12 under the receiving plate 5 and the protruding button 11 at the top of the marker 10 at a safe distance. When the elasticity of the spring 3 decays, the receiving assembly 103 moves downward with the spring 3 until the protruding button 11 at the top of the marker 10 presses the push-button switch 12. At this time, the push-button switch 12 conducts the circuit, and the triggered electrical signal is transmitted to the alarm assembly 106 through the connection circuit. After receiving the electrical signal from the warning assembly 104, the control unit 13 in the alarm assembly 106 controls the alarm unit 15 to issue an audible and visual alarm to realize real-time warning when the spring 3 fails.

[0059] Figure 4 The diagram illustrates a circuit connection block diagram of an apparatus for ensuring the safety of a coal conveying system in a thermal power plant according to an embodiment of the present disclosure.

[0060] like Figure 4 As shown, the device includes a warning component 104 and an alarm component 106. The push-button switch 12 in the warning component 104 is electrically connected to the control unit 13 in the alarm component 106. When the push-button switch 12 is triggered, the electrical signal generated is transmitted to the control unit 13 in real time through the connection circuit between the push-button switch 12 and the control unit 13.

[0061] The control unit 13 is configured to send a control command to the alarm unit 15 in response to a received trigger electrical signal, so as to control the alarm unit 15 to immediately activate the alarm. The alarm unit 15 includes an audible alarm and a visual alarm, used to issue corresponding audible and visual alarms to the operator, effectively indicating that the spring 3 has failed.

[0062] The control unit 13 is also configured to monitor the operating status of the power supply unit 14. The power supply unit 14 supplies power to both the control unit 13 and the alarm unit 15 via connection circuits. When the control unit 13 detects that the power supply unit 14 is in an abnormal operating state, it controls the alarm unit 15 to issue a corresponding audible and visual alarm to the operator.

[0063] Figure 5 The diagram illustrates an alarm triggering flowchart of a device for ensuring the safety of a coal conveying system in a thermal power plant according to an embodiment of the present disclosure.

[0064] like Figure 5 As shown, it includes the following steps:

[0065] S501, the receiving assembly 103 moves down to the predetermined position, and the protruding button 11 at the top of the marker 10 contacts the push button switch 12 on the lower side of the receiving plate 5 and generates pressure;

[0066] S502, when the push-button switch 12 is pressed, the circuit is turned on, and the generated electrical signal is transmitted to the control unit 13 of the alarm component 106;

[0067] S503, the control unit 13 receives and processes the electrical signal and sends a command to the alarm unit 15 to activate the alarm;

[0068] S504, after receiving the instruction from the control unit 13, the alarm unit 15 issues an audible and visual alarm to alert the operator that the spring 3 is in an abnormal state.

[0069] Figure 6 The illustration shows a flowchart of a spring replacement device for ensuring the safety of a coal conveying system in a thermal power plant according to an embodiment of the present disclosure.

[0070] like Figure 6 As shown, it includes the following steps:

[0071] S601, after the limit rod 9 disengages from the slot block 8, the limit abutment part separates from the damping plate 4;

[0072] S602, after the damping plate 4 is released from its limit, it moves upward and disengages from the damping cylinder 2 cavity, exposing the internal spring 3.

[0073] The basic principles of this disclosure have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this disclosure are merely examples and not limitations, and should not be considered as essential features of each embodiment of this disclosure. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the scope of this disclosure to the necessity of employing the aforementioned specific details for implementation.

[0074] The block diagrams of devices, apparatuses, devices, and systems disclosed herein are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, devices, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

[0075] Additionally, as used herein, the “or” used in a list of items beginning with “at least one” indicates a separate list, such that a list of, for example, “at least one of A, B, or C” means A or B or C, or AB or AC or BC, or ABC (i.e., A and B and C). Furthermore, the word “exemplary” does not imply that the described example is preferred or better than other examples.

[0076] It should also be noted that in the systems and methods of this disclosure, the components or steps can be decomposed and / or recombined. These decompositions and / or recombinations should be considered as equivalent solutions to this disclosure.

[0077] Various changes, substitutions, and modifications can be made to the technology described herein without departing from the teachings defined by the appended claims. Furthermore, the scope of the claims of this disclosure is not limited to the specific aspects of the processes, machines, manufactures, events, means, methods, and actions described above. Currently existing or later-developed processes, machines, manufactures, events, means, methods, or actions that perform substantially the same function or achieve substantially the same result as the corresponding aspects described above can be utilized. Therefore, the appended claims include such processes, machines, manufactures, events, means, methods, or actions within their scope.

[0078] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use this disclosure. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of this disclosure. Therefore, this disclosure is not intended to be limited to the aspects shown herein, but rather to be carried out within the widest scope consistent with the principles and novel features disclosed herein.

[0079] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this disclosure to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations therein.

Claims

1. A device for ensuring the safety of a coal conveying system in a thermal power plant, characterized in that, include: The base assembly mainly includes a base plate, and the base assembly is disposed below the device; The buffer assembly includes a damping cylinder, a spring, and a damping plate; wherein, The number of damping cylinders is at least four, and they are disposed above the base assembly; The spring is disposed inside the damping cylinder, and the lower end of the spring contacts the bottom surface of the damping cylinder. The damping plate is disposed on the upper end of the spring, and the damping plate is slidably connected to the inner wall of the damping cylinder; The receiving assembly mainly includes a receiving plate, which is disposed above the damping plate, and the receiving plate and the damping plate are fixedly connected by a vertical shaft; The warning component includes a marker, a raised button, and a push-button switch. The warning component is disposed between the damping cylinder and the receiving plate to provide warning of the state of the spring.

2. The apparatus as claimed in claim 1, characterized in that, The lower end of the marker is fixedly connected to the damping cylinder, the protruding button is located at the top of the marker, and the push-button switch is located on the lower side of the receiving plate.

3. The apparatus as described in claim 1, characterized in that, The marker, the protruding button, and the push-button switch are arranged on the same vertical line. When the receiving assembly moves down to the predetermined position as the elasticity of the spring decreases, the protruding button presses the push-button switch.

4. The apparatus as claimed in claim 1, characterized in that, It also includes a limiting component, which mainly includes two slot blocks. The slot blocks are symmetrically arranged above the damping cylinder, and each slot block has an insertion port on one side facing the center of the damping cylinder.

5. The apparatus as described in claim 4, characterized in that, The limiting component further includes a limiting rod, which is adapted to the slot block and is inserted into the slot of the slot block.

6. The apparatus as claimed in claim 5, characterized in that, When the limiting rod in the limiting assembly is inserted into the socket, a limiting abutment portion extends from the inner side of the limiting rod. The limiting abutment portion is adapted to the damping plate. When the damping plate moves upward to a preset position, it abuts against the limiting abutment portion of the limiting rod. A grip portion for easy insertion and removal is provided on the outer side of the limiting rod.

7. The apparatus as claimed in claim 1, characterized in that, It also includes an alarm component, which comprises a control unit, a power supply unit, and an alarm unit; wherein, The control unit and the alarm unit are electrically connected; The power supply unit provides power to the control unit and the alarm unit.

8. The apparatus as claimed in claim 7, characterized in that, The alarm component and the early warning component are electrically connected. When the button switch is pressed, the control unit receives the electrical signal transmitted by the early warning component and controls the alarm unit to issue an audible and visual alarm.

9. The apparatus as claimed in claim 1, characterized in that, The material receiving component is provided with a manual assistance component on its upper side. The manual assistance component mainly includes auxiliary handles, which are symmetrically arranged on the upper side of the material receiving component and there are at least two of them.

10. The apparatus as claimed in claim 9, characterized in that, The grip portion of the auxiliary handle is cylindrical and has a rough knurled surface.

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