Field adjusting system and method for constant-force spring hanging device

Abstract

The invention discloses an on-site adjusting system and method for a constant-force spring hanging device, and belongs to the technical field of on-site measurement and debugging of in-service equipment, the system comprises an adjusting auxiliary device, the constant-force spring hanging device and a plurality of starting devices; the constant-force spring hanging device comprises a hanging rod and a constant-force spring main body connected with the upper end of the hanging rod; a load adjusting part is arranged on the boom middle section; the lower end of the suspender is connected with components; the starting device is used for starting and fixing the component; the adjusting auxiliary devices are fixed to the two sides of the constant-force spring barrel. During specific operation, the starting device is used for fixing the component, the working state and the stress structure of the original hanging device group are not influenced, and the relative position and the load condition of the component are kept unchanged; and the lifting rod is unloaded by adjusting the auxiliary device, so that the operation difficulty during adjustment is reduced, and the load abnormity and the displacement abnormity of the large-specification constant-force spring lifting device are eliminated under the condition that the normal work of the lifting device is not influenced.

Description

Technical Field

[0001] The invention belongs to the technical field of on-site measurement and debugging of in-service equipment, and in particular relates to an on-site adjustment system and method for a constant force spring suspension device. Background Art

[0002] During the operation of the pipeline system, there may be some problems in the design, installation, operation and maintenance of the pipeline supports and hangers. In addition, after a period of operation, the shape, position of the pipeline and the performance of components such as the support and hanger springs may change to a certain extent, resulting in support and hanger damage, overload, underload and displacement obstruction, resulting in increased stress in local areas of the pipeline and increased thrust on the end equipment. The emergence of these problems will inevitably affect the safety and economy of the equipment operation.

[0003] Constant force spring suspension devices are currently widely used suspension devices. It is a very common problem that they get stuck during operation. The basic solution is to adjust the turnbuckle screws or load bolts of the suspension device during maintenance to eliminate the abnormal load-bearing condition of the suspension device and restore normal working conditions. However, due to the wide application of constant force spring suspension devices and the development of technology, the capacity level of units is getting larger and larger, and the specifications and weight of pipeline equipment and components that need to be suspended are also becoming larger and larger. The traditional manual adjustment method is gradually unable to adapt to the constant force spring suspension device with increasing load.

[0004] Therefore, it is necessary to design an on-site adjustment system and method suitable for a constant force spring suspension device so as to eliminate the abnormal load or displacement without affecting the normal operation of the suspension device. Summary of the invention

[0005] In order to overcome the above-mentioned shortcomings of the prior art, the object of the present invention is to provide an on-site adjustment system and method for a constant force spring suspension device to solve the technical problem of abnormal load or displacement existing in the existing constant force spring suspension device.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: The invention discloses an on-site adjustment system for a constant force spring hanging device, comprising: an adjustment auxiliary device, a constant force spring hanging device and a plurality of starting devices; the constant force spring hanging device comprises a hanger rod and a constant force spring main body connected to the upper end of the hanger rod; a load adjustment component is arranged in the middle section of the hanger rod; components are connected to the lower end of the hanger rod; the starting device is used for starting and fixing the components; and the adjustment auxiliary device is fixed on both sides of a constant force spring cylinder.

[0007] Preferably, the load adjustment component is a turnbuckle screw.

[0008] Preferably, a displacement pointer is provided on the constant force spring body; and a load bolt is provided inside the constant force spring body.

[0009] Preferably, a measuring caliper is provided on the auxiliary adjustment device.

[0010] Preferably, the auxiliary adjustment device is connected to the spring pressure plate inside the constant force spring cylinder through a connecting sleeve.

[0011] The present invention also discloses an on-site adjustment method for a constant force spring suspension device, which uses the on-site adjustment system of the constant force spring suspension device to perform adjustment, and comprises the following steps: 1) Fix the adjustment auxiliary device on both sides of the constant force spring cylinder of the constant force spring suspension device; 2) Use the starting device to start and fix the components connected to the lower end of the boom; 3) Start the adjustment auxiliary device to unload the suspension rod of the constant force spring suspension device; 4) During the unloading process, the load adjustment component set in the middle section of the boom is adjusted according to the load or displacement that needs to be adjusted; 5) After the adjustment is completed, turn off the auxiliary adjustment device to restore the load-bearing capacity of the boom; 6) Remove the starting device in use and restore the constant force spring suspension device to normal working condition.

[0012] Preferably, in step 3), the displacement of the spring pressure plate inside the constant force spring cylinder is monitored and controlled in real time according to a measuring caliper provided on the auxiliary adjustment device.

[0013] Further preferably, in step 4), the load bolt in the constant force spring body or the turnbuckle screw provided in the middle section of the suspension rod is adjusted according to the load or displacement to be adjusted.

[0014] Further preferably, in step 4), when the displacement is adjusted abnormally, adjustment is performed according to the displacement pointer set on the constant force spring body, and when the displacement pointer is stuck at the upper limit, the turnbuckle screw is tightened and adjusted; when the turnbuckle screw is adjusted to 10% of the stroke slot, the adjustment of the displacement abnormality is completed; when the displacement pointer is stuck at the lower limit, the turnbuckle screw is loosened and adjusted; when the turnbuckle screw is adjusted to 90% of the stroke slot, the adjustment of the displacement abnormality is completed.

[0015] Further preferably, in step 4), when the adjustment load is abnormal, the load bolt in the constant force spring body is adjusted, and the length of the load bolt is correspondingly adjusted according to the load percentage that needs to be increased or decreased.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention discloses an on-site adjustment system for a constant force spring hanging device. The adjustment auxiliary device can be firmly fixed on both sides of the constant force spring cylinder, and is tightly connected with the spring pressure plate inside the constant force spring cylinder through a connecting sleeve, so as to ensure the accuracy and stability of the adjustment. The adjustment auxiliary device has a start and stop function, and can be started when the hanging rod of the hanging device is unloaded to reduce the difficulty of adjustment, and can be closed after the adjustment is completed to make the hanging rod of the hanging device resume the load-bearing state, so as to ensure the normal operation of the hanging device. The constant force spring suspension device that needs to be adjusted includes a constant force spring body and a suspension rod. The upper end of the suspension rod is firmly connected to the constant force spring body, the middle section is provided with an adjustable turnbuckle screw, and the lower end is used to connect various components to realize the suspension function; a number of starting devices can effectively start and fix the components to ensure that the relative position and force structure of the components remain unchanged during the adjustment process, thereby avoiding affecting the normal operation of the suspension device; in specific operations, the starting device is used to fix the components without affecting the original working state and force structure of the suspension device group, and the relative position and load of the components remain unchanged; and the auxiliary device is adjusted to unload the suspension rod of the suspension device, reducing the difficulty of operation during adjustment, which provides feasibility for eliminating the load anomaly and displacement anomaly of a larger constant force spring suspension device. It eliminates the load or displacement anomaly without affecting the normal operation of the suspension device.

[0017] Furthermore, the turnbuckle screw, as a load adjustment component, has the advantages of convenient adjustment and high precision, which further improves the accuracy and operability of the adjustment.

[0018] Furthermore, the displacement pointer is set on the constant force spring body, with clear scales, which can accurately indicate the compression degree of the spring and provide an intuitive reference for adjustment. The load bolt is set in the constant force spring body, and the load size can be adjusted as needed, and the load can be accurately adjusted by rotation or extension.

[0019] Furthermore, the measuring caliper is integrated in the auxiliary adjustment device, has high precision and high sensitivity, and can monitor and control the displacement of the spring pressure plate in real time, ensuring the accuracy and reliability of the adjustment.

[0020] Furthermore, by connecting the connecting sleeve to the spring pressure plate, the auxiliary adjustment device can effectively adjust the constant force spring, thereby improving the efficiency and accuracy of the adjustment.

[0021] The present invention also discloses an on-site adjustment method for a constant force spring hanging device, wherein an adjustment auxiliary device is fixed on both sides of the constant force spring cylinder of the constant force spring hanging device; the stability and accuracy of the adjustment auxiliary device are ensured, and a basis is provided for subsequent adjustment operations. A starting device is used to start and fix the components connected to the lower end of the suspension rod; the stability of the components during the adjustment process is ensured, and accidental movement or damage is avoided. The adjustment auxiliary device is started to unload the suspension rod of the constant force spring hanging device; the unloading operation allows adjustments to be made without bearing loads, thereby improving the accuracy and safety of the adjustment. During the unloading process, the load adjustment component provided in the middle section of the suspension rod is adjusted according to the load or displacement to be adjusted; accurate adjustment of the load or displacement during the unloading process is achieved, thereby meeting the requirements under different working conditions. After the adjustment is completed, the adjustment auxiliary device is turned off to restore the suspension rod to load-bearing state; it is ensured that the suspension rod can restore normal load-bearing after the adjustment is completed, thereby ensuring the normal operation of the equipment. The used starting device is removed, so that the equipment can quickly return to normal working conditions after the adjustment is completed, thereby improving the availability and efficiency of the equipment.

[0022] Furthermore, the displacement of the spring pressure plate inside the constant force spring cylinder is monitored and controlled in real time according to the measuring caliper set on the auxiliary adjustment device. By monitoring the displacement of the spring pressure plate in real time with the measuring caliper, it is possible to ensure that the displacement control during the adjustment process is accurate and correct. This real-time monitoring mechanism helps to promptly detect and correct any potential displacement deviations, thereby improving the accuracy and efficiency of the adjustment. In addition, it can prevent equipment damage or performance degradation caused by excessive or insufficient displacement.

[0023] Furthermore, according to the load or displacement to be adjusted, the load bolt in the constant force spring body or the turnbuckle screw set in the middle section of the suspension rod is adjusted to achieve precise adjustment of the load or displacement. By adjusting the load bolt or turnbuckle screw, the load and displacement of the constant force spring can be precisely controlled. This precise adjustment capability enables the equipment to adapt to different working conditions and requirements, improving the flexibility and applicability of the equipment.

[0024] Furthermore, through the indication of the displacement pointer, abnormal displacement can be quickly identified and corrected by tightening the turnbuckle screw. Adjusting the turnbuckle screw to 10% of the stroke slot as the adjustment standard can ensure the accuracy and consistency of the adjustment and avoid over-adjustment or under-adjustment. For the situation where the displacement pointer is stuck at the lower limit, this step provides a corresponding loosening adjustment method. Adjusting the turnbuckle screw to 90% of the stroke slot as the adjustment standard can also ensure the accuracy and consistency of the adjustment. This targeted adjustment method helps to quickly resolve the abnormal displacement problem and restore the normal working state of the equipment.

[0025] Furthermore, by adjusting the length of the load bolt, the load of the constant force spring can be increased or decreased as needed. This method of corresponding adjustment according to the load percentage can ensure the accuracy and effectiveness of the adjustment, enable the equipment to adapt to different load requirements, and improve the reliability and stability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of on-site installation of the horizontal constant force spring suspension device disclosed in the present invention.

[0027] Among them: 1. Constant force spring body; 2. Constant force spring cylinder; 3. Spring pressure plate; 4. Adjustment auxiliary device; 5. Displacement pointer; 6. Turnbuckle screw. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only 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 should fall within the scope of protection of the present invention.

[0029] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0030] The present invention is further described in detail below in conjunction with the accompanying drawings: See also Figure 1It is a schematic diagram of on-site installation of the horizontal constant force spring suspension device disclosed in the present invention; as can be seen from the figure, the on-site adjustment system of the horizontal constant force spring suspension device disclosed in the present invention includes an adjustment auxiliary device 4, a constant force spring suspension device to be adjusted, a number of starting devices and corresponding accessories; each constant force spring suspension device includes a constant force spring body 1 and a suspension rod, the upper end of the suspension rod is connected to the constant force spring body 1, the middle section is provided with a turnbuckle screw 6, and the lower end is connected to components; a displacement pointer 5 is provided on the constant force spring body 1 for indicating the degree of spring compression; the adjustment auxiliary device 4 is directly fixed to both sides of the constant force spring cylinder 2, and is connected to the spring pressure plate 3 inside the constant force spring cylinder 2 through a connecting sleeve; a number of starting devices are used to start and fix the components so that their relative positions and force structures remain unchanged during the adjustment process.

[0031] The on-site adjustment method for a constant force spring suspension device based on an adjustment auxiliary device disclosed in the present invention comprises the following steps: 1) Fix the adjustment auxiliary device 4 on both sides of the spring cylinder 2 of the hanging device to be adjusted; 2) Use several starting equipment devices to start and fix the components; 3) Start the auxiliary adjustment device 4 to unload the suspension rod of the suspension device, and monitor and control the displacement of the spring pressure plate 3 in real time according to the measuring caliper on the auxiliary adjustment device 4; 4) After unloading to a certain extent, adjust the load bolt or turnbuckle screw 6 according to the load or displacement that needs to be adjusted; 5) After the adjustment is completed, close the adjustment auxiliary device 4 to restore the load-bearing capacity of the suspension rod of the hanging device; 6) Remove the starting device in use and restore the constant force spring suspension device to normal working condition.

[0032] When adjusting the displacement abnormality, adjust according to the displacement pointer 5. When it is stuck at the upper (lower) limit, it is necessary to adjust the turnbuckle screw 6 of the hanging device in step 4) to tighten (loosen) it and adjust the turnbuckle screw 6 to 10% (90%) of its travel slot to complete the adjustment of the displacement abnormality.

[0033] When the load adjustment is abnormal, it is necessary to adjust the load bolt in the constant force spring body 1 in step 4), and adjust the length of the load bolt accordingly according to the load percentage that needs to be increased or decreased.

[0034] Example 1 A field adjustment system for a constant force spring suspension device, comprising: an adjustment auxiliary device 4, a constant force spring suspension device and a plurality of starting devices; the constant force spring suspension device comprises a suspension rod and a constant force spring body 1 connected to the upper end of the suspension rod; a load adjustment component is arranged in the middle section of the suspension rod; components are connected to the lower end of the suspension rod; the starting device is used to start and fix the components; the adjustment auxiliary device 4 is fixed on both sides of the constant force spring cylinder 2.

[0035] A method for adjusting a constant force spring suspension device on site, comprising the following steps: 1) Fix the adjustment auxiliary device 4 on both sides of the constant force spring cylinder 2 of the constant force spring suspension device; 2) Use the starting device to start and fix the components connected to the lower end of the boom; 3) Start the adjustment auxiliary device 4 to unload the suspension rod of the constant force spring suspension device; 4) During the unloading process, the load adjustment component set in the middle section of the boom is adjusted according to the load or displacement that needs to be adjusted; 5) After the adjustment is completed, close the adjustment auxiliary device 4 to restore the load-bearing capacity of the boom; 6) Remove the starting device in use and restore the constant force spring suspension device to normal working condition.

[0036] Example 2 A field adjustment system for a constant force spring hanging device, comprising: an adjustment auxiliary device 4, a constant force spring hanging device and a plurality of starting devices; the constant force spring hanging device comprises a hanger, and a constant force spring main body 1 connected to the upper end of the hanger; a displacement pointer 5 is arranged on the constant force spring main body 1; a load bolt is arranged inside the constant force spring main body 1; a turnbuckle screw 6 is arranged in the middle section of the hanger; components are connected to the lower end of the hanger; the starting device is used to start and fix the components; the adjustment auxiliary device 4 is fixed to both sides of the constant force spring cylinder 2; the adjustment auxiliary device 4 is connected to the spring pressure plate 3 inside the constant force spring cylinder 2 through a connecting sleeve; and a measuring caliper is arranged on the adjustment auxiliary device 4.

[0037] A method for adjusting a constant force spring suspension device on site, comprising the following steps: 1) Fix the adjustment auxiliary device 4 on both sides of the constant force spring cylinder 2 of the constant force spring suspension device; 2) Use the starting device to start and fix the components connected to the lower end of the boom; 3) Start the adjustment auxiliary device 4 to unload the suspension rod of the constant force spring suspension device; monitor and control the displacement of the spring pressure plate 3 inside the constant force spring cylinder 2 in real time according to the measuring caliper set on the adjustment auxiliary device 4; 4) During the unloading process, according to the load or displacement that needs to be adjusted, adjust the load bolt in the constant force spring body 1 or the turnbuckle screw 6 set in the middle section of the suspension rod; when the adjustment displacement is abnormal, adjust it according to the displacement pointer 5 set on the constant force spring body 1. When the displacement pointer 5 is stuck at the upper limit, tighten the turnbuckle screw 6; when the turnbuckle screw 6 is adjusted to 10% of the stroke slot, the adjustment of the abnormal displacement is completed; when the displacement pointer 5 is stuck at the lower limit, loosen the turnbuckle screw 6; when the turnbuckle screw 6 is adjusted to 90% of the stroke slot, the adjustment of the abnormal displacement is completed; when the adjustment load is abnormal, adjust the load bolt in the constant force spring body 1, and adjust the load bolt length accordingly according to the load percentage that needs to be increased or decreased; 5) After the adjustment is completed, close the adjustment auxiliary device 4 to restore the load-bearing capacity of the boom; 6) Remove the starting device in use and restore the constant force spring suspension device to normal working condition.

[0038] Example 3 A field adjustment system for a constant force spring hanging device comprises: an adjustment auxiliary device 4, a constant force spring hanging device, a plurality of starting devices and corresponding accessories, the constant force spring hanging device comprises a constant force spring main body 1 and a hanger, the upper end of the hanger is connected to the constant force spring main body 1, the middle section is provided with a turnbuckle screw 6, and the lower end is connected to components, the constant force spring main body 1 is provided with a displacement pointer 5, the adjustment auxiliary device 4 is fixed to both sides of the constant force spring cylinder 2, and is connected to the spring pressure plate 3 inside the constant force spring cylinder 2 through a connecting sleeve.

[0039] A method for adjusting a constant force spring suspension device on site, comprising the following steps: 1) Fix the auxiliary adjustment device 4 on both sides of the spring cylinder 2 of the hanging device to be adjusted to ensure the stability and accuracy of the adjustment; 2) Use several starting equipment devices to start and fix the components to ensure that the relative position and force structure of the components remain unchanged during the adjustment process; 3) Start the auxiliary adjustment device 4 to unload the suspension rod of the suspension device to reduce the difficulty of operation during adjustment. Monitor and control the displacement of the spring pressure plate 3 in real time according to the measuring caliper on the auxiliary adjustment device 4 to ensure the accuracy of adjustment; 4) After unloading to a certain extent, the load bolt or turnbuckle screw 6 is adjusted according to the load or displacement to be adjusted, so as to achieve precise adjustment of the load or displacement; 5) After the adjustment is completed, close the auxiliary adjustment device 4 to restore the load-bearing capacity of the suspension rod of the suspension device to ensure the normal operation of the suspension device; 6) The starting device used is removed and the constant force spring suspension device 1 is restored to normal working condition to ensure the reliability and service life of the suspension device.

[0040] When adjusting the displacement abnormality, first make a judgment based on the indication of the displacement pointer 5. When it is stuck at the upper limit, it means that the compression degree of the spring is too large. At this time, it is necessary to adjust the turnbuckle screw 6 of the hanging device in step 4 to tighten it. During the specific operation, adjust the turnbuckle screw 6 to about 10% of its stroke slot to ensure that the compression degree of the spring returns to the normal range. When it is stuck at the lower limit, it means that the compression degree of the spring is too small. At this time, it is necessary to adjust the turnbuckle screw 6 in step 4 to loosen it. During the specific operation, adjust the turnbuckle screw 6 to about 90% of its stroke slot to ensure that the compression degree of the spring returns to the normal range. Through the above adjustments, the displacement abnormality can be effectively eliminated and the normal operation of the hanging device can be ensured.

[0041] When adjusting the load abnormality, you first need to adjust the load bolts in the main body of the hanging device. In the specific operation, according to the actual need to increase or decrease the load percentage, the load bolts are rotated or extended and adjusted. During the adjustment process, it is necessary to pay close attention to the working status and force structure of the hanging device to ensure that the adjustment process will not cause adverse effects on the hanging device. Through the above adjustments, the size of the load can be accurately adjusted to meet actual needs and improve the reliability and service life of the hanging device.

[0042] The present invention proposes an on-site adjustment system and method for a constant force spring hanging device, which includes an adjustment auxiliary device 4, a constant force spring hanging device to be adjusted, a number of starting devices and corresponding accessories. The adjustment auxiliary device 4 has an exquisite structural design, can be firmly fixed on both sides of the constant force spring cylinder 2, and is tightly connected with the spring pressure plate 3 through a connecting sleeve. During the adjustment process, the adjustment auxiliary device 4 can start to unload the suspension rod, reduce the difficulty of operation during adjustment, and ensure the accuracy and stability of the adjustment. The displacement pointer 5 is arranged on the constant force spring body 1, has a clear scale, can accurately indicate the degree of compression of the spring, and provide an intuitive reference for adjustment. The starting device is used to fix components to ensure that the relative position and force structure of the components remain unchanged during the adjustment process. The method includes the steps of fixing the adjustment auxiliary device 4, starting and fixing components, unloading the suspension rod, adjusting the load bolts or turnbuckle screws 6, restoring the load and removing the starting device, etc. The operation is simple and convenient, and can achieve accurate adjustment of the hanging device.

[0043] The present invention unloads the suspension rod of the suspension device by adjusting the auxiliary device 4, thereby reducing the difficulty of operation during adjustment and improving the efficiency and accuracy of adjustment. At the same time, the structural design of the adjustment auxiliary device 4 is exquisite, and it can be firmly fixed on both sides of the constant force spring cylinder 2 to ensure the stability of the adjustment. Using a starting device to fix the components avoids affecting the relative position and force structure of the components during the adjustment process, thereby ensuring the normal operation of the suspension device. At the same time, the starting device is reasonably designed and easy to operate, thereby improving the convenience of adjustment. The present invention can accurately indicate the degree of compression of the spring and monitor the displacement of the spring pressure plate 3 in real time through the coordinated use of the displacement pointer 5 and the measuring caliper, thereby providing an intuitive reference and precise control means for the adjustment, thereby ensuring the accuracy and reliability of the adjustment. The present invention can eliminate the abnormal load or displacement of the suspension device without affecting the normal operation of the suspension device, thereby improving the reliability and service life of the suspension device. At the same time, the method is simple and convenient to operate, is applicable to constant force spring suspension devices of various specifications, and has a wide range of application prospects.

[0044] The above contents are only for explaining the technical idea of ​​the present invention and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. An on-site adjustment system for a constant force spring suspension device, characterized in that: include: An adjustment auxiliary device (4), a constant force spring hanging device and a plurality of starting devices; the constant force spring hanging device comprises a hanging rod and a constant force spring body (1) connected to the upper end of the hanging rod; a load adjustment component is arranged in the middle section of the hanging rod; components are connected to the lower end of the hanging rod; the starting device is used to start and fix the components; the adjustment auxiliary device (4) is fixed to both sides of the constant force spring cylinder (2).

2. The on-site adjustment system of the constant force spring suspension device according to claim 1, characterized in that: The load adjustment component is a turnbuckle screw (6).

3. The on-site adjustment system of the constant force spring suspension device according to claim 1, characterized in that: A displacement pointer (5) is provided on the constant force spring body (1); and a load bolt is provided inside the constant force spring body (1).

4. The on-site adjustment system of the constant force spring suspension device according to claim 1, characterized in that: The auxiliary adjustment device (4) is provided with a measuring caliper.

5. The on-site adjustment system of the constant force spring suspension device according to claim 1, characterized in that: The auxiliary adjustment device (4) is connected to the spring pressure plate (3) inside the constant force spring cylinder (2) via a connecting sleeve.

6. A method for adjusting a constant force spring suspension device on site, characterized in that: The on-site adjustment system of the constant force spring suspension device according to any one of claims 1 to 5 is used for adjustment, comprising the following steps: 1) Fixing the adjustment auxiliary device (4) on both sides of the constant force spring cylinder (2) of the constant force spring suspension device; 2) Use the starting device to start and fix the components connected to the lower end of the boom; 3) Activate the auxiliary adjustment device (4) to unload the suspension rod of the constant force spring suspension device; 4) During the unloading process, the load adjustment component set in the middle section of the boom is adjusted according to the load or displacement that needs to be adjusted; 5) After the adjustment is completed, close the auxiliary adjustment device (4) to restore the load-bearing capacity of the boom; 6) Remove the starting device in use and restore the constant force spring suspension device to normal working condition.

7. The on-site adjustment method of the constant force spring suspension device according to claim 6, characterized in that: In step 3), the displacement of the spring pressure plate (3) inside the constant force spring cylinder (2) is monitored and controlled in real time according to the measuring caliper provided on the auxiliary adjustment device (4).

8. The on-site adjustment method of the constant force spring suspension device according to claim 6, characterized in that: In step 4), the load bolt in the constant force spring body (1) or the turnbuckle screw (6) provided in the middle section of the suspension rod is adjusted according to the load or displacement to be adjusted.

9. The on-site adjustment method of the constant force spring suspension device according to claim 8, characterized in that: In step 4), when the displacement is abnormally adjusted, the adjustment is performed according to the displacement pointer (5) provided on the constant force spring body (1); when the displacement pointer (5) is stuck at the upper limit, the turnbuckle screw (6) is tightened and adjusted; when the turnbuckle screw (6) is adjusted to 10% of the stroke slot, the adjustment of the displacement abnormality is completed; when the displacement pointer (5) is stuck at the lower limit, the turnbuckle screw (6) is loosened and adjusted; when the turnbuckle screw (6) is adjusted to 90% of the stroke slot, the adjustment of the displacement abnormality is completed.

10. The on-site adjustment method of the constant force spring suspension device according to claim 8, characterized in that: In step 4), when the load adjustment is abnormal, the load bolt in the constant force spring body (1) is adjusted, and the length of the load bolt is adjusted accordingly according to the load percentage that needs to be increased or decreased.

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