A deformation-resistant spring compensation structure

Abstract

This invention discloses an anti-deformation spring compensation structure, including a housing assembly comprising an outer shell, a stroke groove, a support frame, a maintenance window, and a maintenance door; an adjustment assembly comprising a blade cam; a locking assembly comprising a threaded rod, a locking plate, an inner plate, and a locking groove; and an auxiliary assembly comprising a secondary spring. This invention features a maintenance window and a transparent maintenance door on the outer shell, allowing for direct observation of the internal condition and facilitating the assessment of maintenance needs. During maintenance, only the maintenance door needs to be removed, and internal parts can be replaced through the maintenance window, avoiding major disassembly and overhaul and reducing maintenance costs. The blade cam is equipped with a rotatable drum; rotating the drum causes the threaded rod to retract into the blade cam, pressing the locking groove against the locking plate to lock the blade cam, preventing dynamic changes in the system during maintenance. Simultaneously, the rotation of the drum synchronously drives the pressure shaft rod, releasing the restriction on the secondary shaft and enabling rapid disassembly and assembly of the auxiliary components, improving replacement efficiency.

Description

Technical Field

[0001] This invention relates to the field of spring application technology, specifically to an anti-deformation spring compensation structure. Background Technology

[0002] Anti-deformation spring compensation structure refers to a device that maintains the original mechanical output characteristics of the system by switching or replacing pre-installed or switchable elastic components when the original spring system experiences performance degradation such as permanent deformation, relaxation or fatigue fracture. The core of the solution is to address the load compensation problem after spring degradation.

[0003] A constant force spring hanger is a typical spring compensation device used to provide constant support force during thermal displacement of pipelines. A constant force spring hanger typically includes a housing, a vertical rod, a main spring fitted onto the rod, a pressure column assembly fixed to the top of the rod, and symmetrically arranged blade cams and secondary springs. During operation, the rod slides down, causing the pressure column assembly to compress the main spring and slide along the blade cam. When the pressure column assembly is above the horizontal cam convex point, the secondary spring generates an upward component force to compensate for insufficient force from the main spring. After passing the horizontal convex point, the secondary spring then generates a downward component force to counteract excess force from the main spring, thus keeping the output load constant throughout the entire stroke.

[0004] The secondary spring is extremely sensitive to pipeline vibration. Minor excitations such as inherent medium flow pulsations and equipment operation vibrations within the pipeline system are transmitted and amplified to the secondary spring through the lever mechanism of the blade cam, causing frequent small-amplitude expansion and contraction of the secondary spring. This continuous high-frequency fretting easily leads to high-cycle vibration fatigue, resulting in cracks and eventual breakage. In actual industrial environments, once a constant-force spring hanger is installed or supports a pipeline, its internal main and secondary springs are always under stress and dynamically expand and contract with the thermal displacement of the pipeline. Once the secondary spring fails due to fatigue, because the hanger casing is enclosed and integrated with the pipeline, it is impossible to replace the secondary spring without shutting down the system or removing the pipeline. This makes repair extremely difficult and costly, seriously affecting the safe and continuous operation of the pipeline system. Summary of the Invention

[0005] The purpose of this invention is to provide an anti-deformation spring compensation structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an anti-deformation spring compensation structure, comprising a housing assembly, the housing assembly comprising an outer shell, the outer shell having a pair of stroke grooves symmetrically opened on both sides, a support frame being fixedly installed at the bottom of the outer shell by bolts, and a pair of maintenance windows symmetrically opened on the front of the outer shell for easy disassembly, observation and maintenance, with maintenance doors fixed to the maintenance windows by screws;

[0007] The housing is provided with an adjustment assembly for compensating for and counteracting the main spring force. The adjustment assembly includes a blade cam that is rotatably mounted at the bottom inside the housing.

[0008] The blade cam is provided with a locking component for locking the position of the blade cam. The locking component includes a threaded rod threadedly connected to the inside of the blade cam. A locking plate is fixed to the outer end of the threaded rod. An inner plate is fixed inside the back of the outer shell. A locking groove is opened in the inner plate. The locking plate is slidably connected to the locking groove.

[0009] An auxiliary component is installed inside the housing to allow the blade cam to oscillate elastically. The auxiliary component includes a secondary spring connected to the blade cam.

[0010] Preferably, a hoisting assembly for installing pipes is installed inside the housing. The hoisting assembly includes a lifting shaft slidably connected inside the housing. The bottom end of the lifting shaft passes through a support frame. A main spring is sleeved on the lifting shaft. A pressure column mechanism is fixed at the top end of the lifting shaft. The two ends of the pressure column mechanism respectively abut against corresponding blade cams. A pair of limit rods are fixed on both sides of the pressure column mechanism. The limit rods are slidably connected in corresponding stroke grooves.

[0011] Preferably, a connecting bracket is symmetrically fixed to the middle of the side of the blade cam.

[0012] Preferably, a rotating cylinder is rotatably mounted inside the blade cam, the inner end of the threaded rod is slidably mounted inside the rotating cylinder, a pair of pressure shafts are symmetrically fixed to the cylindrical surface of the rotating cylinder, and a bevel gear disc and an extrusion block are fixed to the cylindrical surface of the rotating cylinder between the pressure shafts in a misaligned manner.

[0013] Preferably, the housing is provided with a guide assembly for guiding the installation and disassembly of the auxiliary components. The guide assembly includes a fixed guide rail fixed to the inner side wall of the housing. A pair of locking rods are symmetrically slidably installed on both sides of the fixed guide rail. The two ends of the locking rods pass through the fixed guide rail and the housing, respectively. A first spring is sleeved on the locking rod. A handle is fixedly connected to the outer ends of the two locking rods. A primary guide rail is fixed inside the front and back sides of the housing. The top of the secondary guide rail is rotatably connected to the primary guide rail. An adjustment groove is opened on the outer side of the bottom end of the secondary guide rail. A support base is fixed on the outer side of the connecting frame. The inner side of the support base is rotatably installed in the corresponding adjustment groove.

[0014] Preferably, a primary shaft is slidably connected inside the fixed guide rail. A clamp is fixed to the end of the primary shaft. A sleeve is fixed on the clamp. A telescopic rod is slidably installed inside the sleeve. A synchronization cylinder is rotatably connected to the end of the telescopic rod. Another clamp is fixed to one end of the synchronization cylinder, and the telescopic rod passes through the other clamp. A pair of secondary shafts are symmetrically fixed to the other end of the synchronization cylinder. The secondary shafts are slidably connected to the corresponding primary and secondary guide rails, respectively. A secondary spring is installed between the two clamps.

[0015] Preferably, the telescopic rod is internally provided with a limiting component to restrict its rotation. The limiting component includes an inner slide rod that slides elastically inside the telescopic rod via a second spring. The outer end of the inner slide rod is outside the telescopic rod. A movable cap is fixed to the outer end of the inner slide rod, and the pressing block abuts against the movable cap. Several primary wedges are fixed at equal intervals on the inner end of the inner slide rod. An anti-rotation key is slidably installed on the cylindrical surface of the telescopic rod. The anti-rotation key is elastically connected inside the telescopic rod via several third springs. Several secondary wedges are fixed at equal intervals on the primary wedges, and the secondary wedges abut against the corresponding primary wedges. A keyway is provided on the inner side of the sleeve to engage with the anti-rotation key.

[0016] Preferably, the telescopic rod end is provided with a bulletproof assembly for timely fixing the length of the secondary spring. The bulletproof assembly includes a bevel gear rotatably mounted on the end of the telescopic rod. The bevel gear meshes with the bevel gear disc. A one-way ratchet assembly is provided inside the bevel gear. A toothed assembly is fixed on the cylindrical surface of the telescopic rod. A cover is fixed to the end of the sleeve. A fourth spring and a braking tooth are installed inside the cover. The braking tooth is elastically connected to the inside of the cover through the fourth spring, and the braking tooth meshes with the toothed assembly.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. A maintenance window and a transparent maintenance door are provided on the outer casing. The maintenance door closes the maintenance window, while the transparent maintenance door allows observation of the internal structure of the casing, facilitating the determination of whether internal parts require repair. During maintenance, only the maintenance door needs to be removed, and internal parts can be repaired or replaced through the maintenance window, avoiding major disassembly and overhaul and effectively reducing maintenance costs. A rotatable drum is provided on the blade cam. During maintenance, rotating the drum drives the threaded rod to retract into the blade cam, thereby pressing the locking groove through the locking plate to lock the blade cam. This prevents the entire system from being in dynamic change during maintenance. Furthermore, the rotation of the drum simultaneously drives the pressure rod to rotate, releasing the restriction on the secondary shaft, thus enabling quick disassembly and assembly of auxiliary components and improving the efficiency of auxiliary component replacement.

[0019] 2. When the blade cam is locked, the extension or shortening of the secondary spring varies. To ensure that the new auxiliary component can easily match the length of the old auxiliary component during installation, guide components are provided at both ends of the auxiliary component for sliding. The guide components have a fixed guide rail and a primary guide rail, and the two ends of the secondary guide rail rotate on the primary guide rail and the connecting bracket, respectively. They can be adjusted synchronously with the swing of the blade cam, so that the bottom end of the secondary guide rail is always aligned with the installation position of the secondary shaft. Thus, during the process of pushing down the auxiliary component, the primary shaft and the secondary shaft slide in the fixed guide rail, the primary guide rail, and the secondary guide rail, respectively. During the sliding process, the length of the auxiliary component is gradually adjusted by the secondary guide rail, eventually reaching the length when the old auxiliary component was removed, thus making it easy to install the new auxiliary component.

[0020] 3. During the rotation of the drum and locking of the blade cam, the drum synchronously drives the bevel gear disc and the extrusion block to rotate. During the rotation of the extrusion block, it pushes the inner slide rod, causing the anti-rotation key to separate from the keyway and release the rotation lock of the telescopic rod. The bevel gear disc meshes with the bevel gear, driving the telescopic rod to rotate, so that the tooth assembly meshes with the brake tooth, locking the length of the telescopic rod. This prevents the secondary spring from restoring and causing an instantaneous break after the secondary shaft restriction is released, thus avoiding danger. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram illustrating the opening of the maintenance door of the present invention;

[0023] Figure 3 This is a schematic diagram of the internal planar surface of the outer casing of the present invention;

[0024] Figure 4 This is a disassembly diagram of the guide component 5 of the present invention;

[0025] Figure 5 This is a schematic diagram of the locking component of the present invention inside the blade cam;

[0026] Figure 6 This is a disassembled schematic diagram of the locking component structure of the present invention;

[0027] Figure 7 This is a schematic diagram of the auxiliary component structure of the present invention;

[0028] Figure 8 This is a cross-sectional view of the telescopic rod of the present invention;

[0029] Figure 9 This is a schematic diagram of the meshing of the tooth assembly and the brake tooth of the present invention;

[0030] Figure 10 This is a schematic diagram of a single ratchet assembly of the present invention.

[0031] Figure 11 This is a schematic diagram showing the cooperation between the locking component and the auxiliary component of the present invention;

[0032] Figure 12 This is a schematic diagram illustrating the cooperation between the guiding component and the auxiliary component of the present invention;

[0033] Figure 13 This is a schematic diagram of the internal structure of the fixed guide rail of the present invention.

[0034] In the diagram: 1. Housing assembly; 10. Outer shell; 11. Stroke groove; 12. Maintenance window; 13. Maintenance door; 14. Support frame; 2. Lifting assembly; 20. Lifting shaft; 21. Main spring; 22. Pressure column mechanism; 23. Limit rod; 3. Adjustment assembly; 30. Blade cam; 31. Connecting frame; 4. Locking assembly; 40. Rotary drum; 41. Threaded rod; 42. Locking plate; 43. Inner plate; 44. Locking groove; 45. Pressure shaft rod; 46. Bevel gear disc; 47. Extrusion block; 5. Guide assembly; 50. Fixed guide rail; 51. Primary guide rail; 52. Secondary guide rail; 53. Adjustment... 54. Groove; 55. Support seat; 56. Locking rod; 57. First spring; 68. Handle; 79. Auxiliary component; 60. Primary shaft; 61. Clamping plate; 62. Sleeve; 63. Telescopic rod; 64. Synchronizing cylinder; 65. Secondary shaft; 66. Secondary spring; 77. Limiting component; 70. Movable cap; 71. Inner slide rod; 72. Second spring; 73. Primary wedge; 74. Anti-rotation key; 75. Secondary wedge; 76. Third spring; 77. Keyway; 88. Bulletproof component; 80. Bevel gear; 81. One-way ratchet assembly; 82. Tooth assembly; 83. Cover; 84. Fourth spring; 85. Brake tooth. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Please see Figure 1-13 The present invention provides a technical solution: an anti-deformation spring compensation structure;

[0037] Example 1: Please refer to Figures 1-3 , Figures 6-7 This embodiment describes one of the implementable structures of the anti-deformation spring compensation structure;

[0038] The housing assembly 1 includes a housing 10. The housing 10 has a pair of travel grooves 11 symmetrically opened on both sides. A support frame 14 is fixedly installed at the bottom of the housing 10 by bolts. The front of the housing 10 has a pair of maintenance windows 12 that are convenient for disassembly, observation and maintenance. A maintenance door 13 is fixed to the maintenance window 12 by screws.

[0039] In this embodiment, the maintenance door 13 is made of transparent material and is installed on the outer shell 10 with screws. Maintenance personnel can easily see the working status of various components inside the outer shell 10 through the maintenance door 13, thereby efficiently determining whether internal parts need maintenance, greatly reducing the difficulty of maintenance. Moreover, after disassembling the maintenance door 13, replacement and repair can be carried out directly through the maintenance window 12, avoiding major disassembly and overhaul, and effectively reducing maintenance costs.

[0040] The housing 10 is equipped with a hoisting assembly 2 for installing pipes. The hoisting assembly 2 includes a lifting shaft 20 that is slidably connected to the inside of the housing 10. The bottom end of the lifting shaft 20 passes through the support frame 14. A main spring 21 is sleeved on the lifting shaft 20. A pressure column mechanism 22 is fixed at the top of the lifting shaft 20. The two ends of the pressure column mechanism 22 respectively abut against the corresponding blade cam 30. A pair of limit rods 23 are fixed on both sides of the pressure column mechanism 22. The limit rods 23 are slidably connected in the corresponding stroke groove 11.

[0041] In this embodiment, the bottom of the lifting shaft 20 can be connected to equipment for hoisting large pipes, so that the large pipes are suspended in the air; the pressure column mechanism 22 consists of a metal frame and rollers installed on both sides of the metal frame.

[0042] The substances transported in the pipeline will cause the pipeline to vibrate. In the system consisting of the lifting shaft 20, the main spring 21, the pressure column mechanism 22, the blade cam 30, and the auxiliary spring 66, according to the parallelogram law, under the action of the blade cam 30, the elastic forces of the main spring 21 and the auxiliary springs 66 on both sides of the lifting shaft 20 interact to form a resultant force. During the displacement of the lifting shaft 20, a constant load is obtained to reduce the vibration of the pipeline, thereby effectively protecting the pipeline.

[0043] The limit rod 23 slides inside the stroke groove 11, which restricts the lifting and lowering of the pressure column mechanism 22, thereby preventing the lifting shaft 20 and the pressure column mechanism 22 from moving beyond the limit, so that the main spring 21 deforms within the effective stroke and avoids damage to the main spring 21.

[0044] The housing 10 is provided with an adjustment assembly 3 to compensate for and counteract the elastic force of the main spring 21. The adjustment assembly 3 includes a blade cam 30 that is rotatably mounted at the bottom inside the housing 10. A connecting bracket 31 is symmetrically fixed to the middle of the side of the blade cam 30.

[0045] In this embodiment, reference Figure 3In the aforementioned system, during the downward displacement of the lifting shaft 20, the pressure column mechanism 22 continuously compresses the main spring 21, gradually increasing the elastic force of the main spring 21. Simultaneously, it compresses the curved surface of the blade cam 30, causing the blade cam 30 to swing to the left and right sides respectively. The blade cam 30 compresses the secondary spring 66, and the elastic force of the secondary spring 66 is fed back to the pressure column mechanism 22. The horizontal component of the force cancels each other out, while the vertical component of the force and the elastic force of the main spring 21 together provide the output load for the lifting shaft 20. When the elastic force of the main spring 21 is equal to the output load of the lifting shaft 20, the common tangent of the blade cam 30 and the pressure column mechanism 22 is vertical. As the pressure column mechanism 22 continues downward, the blade cam 30 begins to swing back, and the vertical component of the elastic force transmitted from the secondary spring 66 to the pressure column mechanism 22 becomes downward, used to offset the portion of the main spring 21's elastic force that exceeds the output load of the lifting shaft 20, keeping the entire system stable and thus achieving a constant output load throughout the entire operation.

[0046] The blade cam 30 is provided with a locking component 4 for locking the position of the blade cam 30. The locking component 4 includes a threaded rod 41 threadedly connected to the inside of the blade cam 30. A locking plate 42 is fixed to the outer end of the threaded rod 41. An inner plate 43 is fixed inside the back of the outer shell 10. A locking groove 44 is opened in the inner plate 43. The locking plate 42 is slidably connected to the locking groove 44. A rotating cylinder 40 is rotatably installed inside the blade cam 30. The inner end of the threaded rod 41 is slidably installed inside the rotating cylinder 40.

[0047] In this embodiment, the secondary spring 66 frequently extends and contracts in small amplitudes, making it prone to fatigue and malfunction. When it is necessary to repair or replace the secondary spring 66, the maintenance door 13 is opened, and the rotary drum 40 is driven to rotate using a hex wrench. This causes the threaded rod 41 to rotate, and under the constraint of the thread, the threaded rod 41 retracts into the blade cam 30, thereby causing the locking plate 42 to press against the locking groove 44. The contact surfaces of the locking plate 42 and the locking groove 44 are both provided with raised stripes. After they are pressed together, the blade cam 30 cannot swing, thus fixing the blade cam 30. Then the auxiliary component 6 can be removed, which avoids the secondary spring 66 continuously extending and contracting due to the dynamic swing of the blade cam 30 during the maintenance process, making it inconvenient to replace the auxiliary component 6.

[0048] An auxiliary component 6 is installed inside the housing 10 to make the blade cam 30 swing elastically. The auxiliary component 6 includes a secondary spring 66 connected to the blade cam 30.

[0049] A primary shaft 60 is slidably connected inside the fixed guide rail 50. A clamp 61 is fixed to the end of the primary shaft 60. A sleeve 62 is fixed on the clamp 61. A telescopic rod 63 is slidably installed inside the sleeve 62. A synchronous cylinder 64 is rotatably connected to the end of the telescopic rod 63. Another clamp 61 is fixed to one end of the synchronous cylinder 64, and the telescopic rod 63 passes through the other clamp 61. A pair of secondary shafts 65 are symmetrically fixed to the other end of the synchronous cylinder 64. The secondary shafts 65 are slidably connected to the corresponding primary guide rail 51 and secondary guide rail 52, respectively. A secondary spring 66 is installed between the two clamps 61.

[0050] In this embodiment, a secondary spring 66 is installed between the two clamping discs 61, and is slidably connected by a sleeve 62 and a telescopic rod 63 in the middle, thereby ensuring that the deformation direction of the secondary spring 66 is always straight during the deformation process; the primary shaft 60 is used to slide within the fixed guide rail 50 and is also restricted by the fixed guide rail 50; the synchronous cylinder 64 and the secondary shaft 65 are used to slide within the primary guide rail 51 and the secondary guide rail 52, and are also restricted by the primary guide rail 51 and the secondary guide rail 52.

[0051] Example 2: Please refer to Figures 3-5 , Figures 12-13 Based on Embodiment 1, this embodiment takes into account that the locking position of the blade cam 30 is not fixed during each maintenance or replacement in Embodiment 1, that is, the extension and retraction length of the secondary spring 66 is not fixed. After removing the old auxiliary component 6, when installing the new auxiliary component 6, it is necessary to manually calibrate the length of the secondary spring 66 and accurately install it on the connecting bracket 31, which is quite difficult. Moreover, compressing or stretching the length of the secondary spring 66 is quite laborious. Therefore, Embodiment 2 solves the problem of needing to calibrate the length of the secondary spring 66 when installing the new auxiliary component 6 through the following structure.

[0052] The housing 10 is provided with a guide component 5 for guiding the installation and removal of the auxiliary component 6. The guide component 5 includes a fixed guide rail 50 fixed to the inner side wall of the housing 10. A pair of locking rods 55 are symmetrically slidably installed on both sides of the fixed guide rail 50. The two ends of the locking rods 55 pass through the fixed guide rail 50 and the housing 10 respectively. A first spring 56 is sleeved on the locking rods 55. A handle 57 is fixedly connected to the outer end of the two locking rods 55. A primary guide rail 51 is fixed inside the front and back sides of the housing 10. The top of the secondary guide rail 52 is rotatably connected to the primary guide rail 51. An adjustment groove 53 is opened on the outer side of the bottom end of the secondary guide rail 52. A support seat 54 is fixed on the outer side of the connecting frame 31. The inner side of the support seat 54 is rotatably installed in the corresponding adjustment groove 53.

[0053] In this embodiment, the installation positions of both ends of the secondary spring 66 are first restricted. A fixed guide rail 50 with a fixed track is fixed inside the housing 10, allowing the primary shaft 60 to slide downwards within the fixed guide rail 50 until it reaches its bottom position, which is the installation position. At the other end of the secondary spring 66, a primary guide rail 51 is symmetrically fixed on the front and back sides inside the housing 10, and a secondary guide rail 52 is movably mounted, allowing the secondary shaft 65 to slide within the primary and secondary guide rails 51 and 52. The top of the secondary guide rail 52 is rotatably mounted to the primary guide rail 51, and the bottom of the secondary guide rail 52 is rotatably mounted to the blade cam 30 via an adjustment groove 53. The bottom of the secondary guide rail 52 is always aligned with the installation position of its connecting bracket 31. During the swing of the blade cam 30, the secondary guide rail 52 moves synchronously, ensuring that, at any position, the bottom of the secondary guide rail 52 leads to the installation position of the connecting bracket 31. Therefore, when the blade cam 30 is locked by the locking component 4, it is equivalent to fixing the bottom of the secondary guide rail 52. Since the primary guide rail 51 is fixed inside the housing 10, when the new auxiliary component 6 is installed from top to bottom, the auxiliary component 6 will be gradually stretched or compressed by the secondary guide rail 52. When it slides to the bottom of the secondary guide rail 52, the length of the auxiliary component 6 is exactly the same as the length of the old auxiliary component 6 when the blade cam 30 is locked, so that the new auxiliary component 6 can be perfectly matched, effectively reducing the installation difficulty of the auxiliary component 6.

[0054] Example 3: Please refer to Figure 3 , Figures 5-6 , Figures 8-11 Based on Embodiment 1, this embodiment takes into account that when the rotating drum 40 in Embodiment 1 releases the secondary shaft 65, if the secondary spring 66 is in a compressed or extended state, the instantaneous elastic deformation may cause the entire auxiliary component 6 to bounce up, which may not only damage other components, but also pose a threat to maintenance personnel, which is very unsafe. Therefore, Embodiment 3 solves the problem that the elastic auxiliary component 6 will bounce up when the pressure rod 45 releases the secondary shaft 65 through the following structure.

[0055] A pair of pressure rods 45 are symmetrically fixed on the cylindrical surface of the rotating drum 40, and a beveled disc 46 and an extrusion block 47 are fixed between the cylindrical surfaces of the rotating drum 40 with the pressure rods 45 offset from each other.

[0056] In this embodiment, during the swing of the blade cam 30, the pressure rod 45 presses against the secondary shaft 65, forming a clamping force with the connecting frame 31, ensuring that the secondary shaft 65 will not disengage from the connecting frame 31 during the extension and retraction of the secondary spring 66; during the rotation of the drum 40, the pressure rod 45, the bevel gear disk 46 and the extrusion block 47 are driven to rotate synchronously, and the pressure rod 45 releases the secondary shaft 65. Since the bevel gear disk 46 and the extrusion block 47 are misaligned on the cylindrical surface of the drum 40, the extrusion block 47 first extrudes the movable cap 70, and then the bevel gear disk 46 meshes with the bevel gear 80.

[0057] The telescopic rod 63 is provided with a limiting component 7 to restrict the rotation of the telescopic rod 63. The limiting component 7 includes an inner slide rod 71 that slides elastically inside the telescopic rod 63 via a second spring 72. The outer end of the inner slide rod 71 is outside the telescopic rod 63. A movable cap 70 is fixed to the outer end of the inner slide rod 71, and the pressing block 47 abuts against the movable cap 70. Several primary wedges 73 are fixed at equal intervals on the inner end of the inner slide rod 71. An anti-rotation key 74 is slidably installed on the cylindrical surface of the telescopic rod 63. The anti-rotation key 74 is elastically connected inside the telescopic rod 63 via several third springs 76. Several secondary wedges 75 are fixed at equal intervals on the primary wedges 73, and the secondary wedges 75 abut against the corresponding primary wedges 73. A keyway 77 is provided on the inner side of the sleeve 62 to engage with the anti-rotation key 74.

[0058] In this embodiment, during the extension and retraction of the secondary spring 66, the anti-rotation key 74 engages in the keyway 77 to prevent the sleeve 62 and the telescopic rod 63 from twisting, thus avoiding accidental engagement between the brake tooth 85 and the tooth set 82, which would cause the sleeve 62 and the telescopic rod 63 to lock, preventing the secondary spring 66 from extending or retracting. When the rotating drum 40 rotates, the drive threaded rod 41 drives the locking plate 42 to press against the locking groove 44, and the pressing block 47 pushes the movable cap 70. The movable cap 70 drives the first-stage wedge block 73 to release the second-stage wedge block 75 through the inner slide rod 71. Subsequently, under the elastic force of the third spring 76, the anti-rotation key 74 retracts into the telescopic rod 63 and disengages from the keyway 77.

[0059] The telescopic rod 63 is provided with a bulletproof component 8 that can fix the length of the secondary spring 66 in time. The bulletproof component 8 includes a bevel gear 80 rotatably installed at the end of the telescopic rod 63. The bevel gear 80 is meshed with the bevel gear disk 46. A one-way ratchet assembly 81 is provided inside the bevel gear 80. A tooth assembly 82 is fixed on the cylindrical surface of the telescopic rod 63. A cover 83 is fixed at the end of the sleeve 62. A fourth spring 84 and a brake tooth 85 are installed inside the cover 83. The brake tooth 85 is elastically connected to the inside of the cover 83 through the fourth spring 84, and the brake tooth 85 is meshed with the tooth assembly 82.

[0060] In this embodiment, after the anti-rotation key 74 releases the restriction on the sleeve 62, the bevel gear disk 46 begins to mesh with the bevel gear 80 and drives the bevel gear 80 to rotate. The bevel gear 80 drives the telescopic rod 63 to rotate, causing the tooth assembly 82 on the surface of the telescopic rod 63 to rotate to the position where it meshes with the brake tooth 85. During the rotation, inside the cover 83, under the elastic force of the fourth spring 84, the brake tooth 85 slides out and meshes with the tooth assembly 82, thereby locking the telescopic rod 63. Since the auxiliary spring 66 is in a compressed or extended state at this time, the auxiliary spring 66 will instantly reset when the auxiliary component 6 is released, which may easily cause the auxiliary component 6 to shatter, which is very dangerous. Therefore, it is necessary to immediately limit the deformation of the auxiliary spring 66 to ensure safe operation.

[0061] The bevel gear 80 is internally connected to the end of the telescopic rod 63 via a one-way ratchet assembly 81. At this time, the bevel gear disk 46 can drive the telescopic rod 63 to rotate through the bevel gear 80. When the new auxiliary component 6 is installed in place, during the reset process of the locking component 4, the bevel gear 80 rotates freely and will not drive the telescopic rod 63 to reverse. This is because in the new auxiliary component 6, the telescopic rod 63 cannot rotate due to the engagement of the anti-rotation key 74 with the keyway 77. If the bevel gear 80 could drive the telescopic rod 63 to rotate at this time, then when the bevel gear disk 46 resets, it would prevent jamming when it drives the bevel gear 80 to reverse.

[0062] Working principle: After the pipe is hoisted to the bottom of the lifting shaft 20, vibration occurs due to factors such as the flow of substances and temperature inside the pipe. At this time, the main spring 21 elastically extends and retracts, and the lifting shaft 20 drives the pressure column mechanism 22 to rise and fall, balancing the vibration brought by the pipe. During the lifting of the lifting shaft 20, the pressure column mechanism 22 constantly presses the blade cam 30, causing the secondary spring 66 to frequently extend and retract, which is prone to fatigue and breakage. Therefore, it is necessary to frequently inspect or replace the auxiliary components 6 and other parts inside the outer casing 10.

[0063] During a simple inspection, the condition of the internal parts of the outer casing 10 can be observed through the transparent maintenance door 13. When disassembly and repair are required, the maintenance door 13 can be opened, and the internal parts of the outer casing 10 can be repaired and replaced through the maintenance window 12.

[0064] When replacing auxiliary component 6, first use a hex wrench to rotate the drum 40. The drum 40 first rotates the threaded rod 41. The threaded rod 41 moves into the blade cam 30 through the threaded connection, so that the locking plate 42 presses against the locking groove 44 in the inner plate 43 to lock the blade cam 30. During this period, the drum 40 simultaneously rotates the pressure shaft rod 45, the bevel gear plate 46 and the extrusion block 47. The pressure shaft rod 45 releases the secondary shaft 65 it is pressing. Then the extrusion block 47 abuts against and pushes the movable cap 70. The movable cap 70 pushes the inner slide rod 71 into the telescopic rod 63. The inner slide rod 71 compresses the second spring 72 and at the same time drives the first-stage wedge block 73 to release the second-stage wedge block 75. Then, under the elastic drag of the third spring 76, the anti-rotation key 74 slides into the telescopic rod 63 and disengages from the keyway 77.

[0065] Next, the bevel gear 46 meshes with the bevel gear 80, causing the bevel gear 80 to rotate forward. The bevel gear 80 then rotates the telescopic rod 63 by ninety degrees, causing the tooth assembly 82 on the surface of the telescopic rod 63 to rotate to the position where it meshes with the brake tooth 85. During the rotation of the telescopic rod 63, inside the cover 83, under the elastic force of the fourth spring 84, the brake tooth 85 slides out and meshes with the tooth assembly 82, locking the telescopic rod 63 and thus fixing the length of the secondary spring 66.

[0066] Pull the handle 57 outwards from the outer casing 10 to slide the locking rod 55. The locking rod 55 compresses the first spring 56, releasing the restriction on the primary shaft 60. Then, gently lift the auxiliary component 6, allowing the primary shaft 60 and the secondary shaft 65 to enter the tracks of the fixed guide rail 50 and the secondary guide rail 52, respectively. Then, slowly rotate the telescopic rod 63 in the opposite direction to separate the brake tooth 85 from the tooth assembly 82, freeing the telescopic rod 63 and returning the anti-rotation key 74 to the keyway 77. Under the restriction of the fixed guide rail 50 and the secondary guide rail 52, the length of the secondary spring 66 will not change. Continue to lift the auxiliary component 6 upwards. The auxiliary component 6 rises along the fixed guide rail 50, the secondary guide rail 52, and the primary guide rail 51, gradually changing its length. Finally, the secondary spring 66 returns to its natural length, and the old auxiliary component 6 also detaches from the guide component 5.

[0067] Installing the new auxiliary component 6 is the reverse of the above operation: Move the new auxiliary component 6 downwards. Under the constraints of the fixed guide rail 50, the primary guide rail 51, and the secondary guide rail 52, the new auxiliary component 6 gradually extends or shortens during its sliding process until the primary shaft 60 slides to the bottom of the fixed guide rail 50 and the secondary shaft 65 slides into the connecting bracket 31. Release the handle 57, and under the elastic force of the first spring 56, the locking rod 55 re-inserts into the fixed guide rail 50, pressing the primary shaft 60.

[0068] The rotating drum 40 reverses, causing the threaded rod 41 to reverse as well. The threaded rod 41 then moves the locking plate 42 away from the locking groove 44. Simultaneously, the rotating drum 40 resets the pressure shaft 45, bevel gear disc 46, and extrusion block 47. The pressure shaft 45 presses against the secondary shaft 65. The bevel gear disc 46 drives the bevel gear 80 to rotate in the opposite direction. Although the extrusion block 47 can still extrude the movable cap 70, it lacks the power to rotate the telescopic rod 63 during this process, thus rendering its work ineffective.

[0069] At this point, the new auxiliary component 6 has been replaced, the blade cam 30 has been unlocked, and the maintenance door 13 has been reinstalled.

[0070] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A deformation-resistant spring compensation structure, comprising a housing assembly (1), the housing assembly (1) comprising a shell (10), the shell (10) having a pair of symmetrically formed travel grooves (11) on both sides, and a support frame (14) fixedly mounted on the bottom of the shell (10) by bolts, characterized in that: The outer shell (10) has a pair of maintenance windows (12) symmetrically opened on the front for easy disassembly, observation and maintenance. The maintenance windows (12) are fixed with maintenance doors (13) by screws. The housing (10) is provided with an adjustment assembly (3) to compensate for and counteract the elastic force of the main spring (21). The adjustment assembly (3) includes a blade cam (30) that is rotatably mounted at the bottom inside the housing (10). The blade cam (30) is provided with a locking assembly (4) for locking the position of the blade cam (30). The locking assembly (4) includes a threaded rod (41) threadedly connected to the inside of the blade cam (30). A locking plate (42) is fixed to the outer end of the threaded rod (41). An inner plate (43) is fixed inside the back of the outer shell (10). A locking groove (44) is provided in the inner plate (43). The locking plate (42) is slidably connected to the locking groove (44). An auxiliary component (6) is installed inside the housing (10) to allow the blade cam (30) to oscillate elastically. The auxiliary component (6) includes a secondary spring (66) connected to the blade cam (30).

2. The anti-deformation spring compensation structure according to claim 1, characterized in that: The housing (10) is equipped with a hoisting assembly (2) for installing pipes. The hoisting assembly (2) includes a lifting shaft (20) slidably connected inside the housing (10). The bottom end of the lifting shaft (20) passes through the support frame (14). A main spring (21) is sleeved on the lifting shaft (20). A pressure column mechanism (22) is fixed at the top end of the lifting shaft (20). The two ends of the pressure column mechanism (22) respectively abut against the corresponding blade cam (30). A pair of limit rods (23) are fixed on both sides of the pressure column mechanism (22). The limit rods (23) are slidably connected in the corresponding stroke groove (11).

3. The anti-deformation spring compensation structure according to claim 1, characterized in that: A connecting bracket (31) is symmetrically fixed to the middle of the side of the blade cam (30).

4. The anti-deformation spring compensation structure according to claim 3, characterized in that: A rotating cylinder (40) is rotatably mounted inside the blade cam (30). The inner end of the threaded rod (41) is slidably mounted inside the rotating cylinder (40). A pair of pressure rods (45) are symmetrically fixed on the cylindrical surface of the rotating cylinder (40). A bevel gear disc (46) and an extrusion block (47) are fixed between the pressure rods (45) on the cylindrical surface of the rotating cylinder (40) with the cylindrical surface of the rotating cylinder (40) offset.

5. The anti-deformation spring compensation structure according to claim 4, characterized in that: The housing (10) is provided with a guide assembly (5) for guiding the installation and removal of the auxiliary assembly (6). The guide assembly (5) includes a fixed guide rail (50) fixed to the inner wall of the housing (10). A pair of locking rods (55) are symmetrically slidably installed on both sides of the fixed guide rail (50). The two ends of the locking rods (55) pass through the fixed guide rail (50) and the housing (10) respectively. A first spring (56) is sleeved on the locking rod (55). A handle (57) is fixedly connected to the outer ends of the two locking rods (55). A primary guide rail (51) is fixed inside the front and back sides of the housing (10). The top of the secondary guide rail (52) is rotatably connected to the primary guide rail (51). An adjustment groove (53) is opened on the outer side of the bottom end of the secondary guide rail (52). A support seat (54) is fixed on the outer side of the connecting frame (31). The inner side of the support seat (54) is rotatably installed in the corresponding adjustment groove (53).

6. The anti-deformation spring compensation structure according to claim 5, characterized in that: The fixed guide rail (50) is internally connected to a primary shaft (60), and a clamp (61) is fixed at the end of the primary shaft (60). A sleeve (62) is fixed on the clamp (61), and a telescopic rod (63) is slidably installed inside the sleeve (62). A synchronization cylinder (64) is rotatably connected at the end of the telescopic rod (63). Another clamp (61) is fixed at one end of the synchronization cylinder (64), and the telescopic rod (63) passes through the other clamp (61). A pair of secondary shafts (65) are symmetrically fixed at the other end of the synchronization cylinder (64), and the secondary shafts (65) are slidably connected to the corresponding primary guide rail (51) and secondary guide rail (52) respectively. A secondary spring (66) is installed between the two clamps (61).

7. The anti-deformation spring compensation structure according to claim 6, characterized in that: The telescopic rod (63) is provided with a limiting component (7) to restrict the rotation of the telescopic rod (63). The limiting component (7) includes an inner slide rod (71) that slides elastically inside the telescopic rod (63) by a second spring (72). The outer end of the inner slide rod (71) is outside the telescopic rod (63). A movable cap (70) is fixed to the outer end of the inner slide rod (71), and the pressing block (47) abuts against the movable cap (70). The inner end of the inner slide rod (71) A number of primary wedges (73) are fixed at equal intervals. An anti-rotation key (74) is slidably installed on the cylindrical surface of the telescopic rod (63). The anti-rotation key (74) is elastically connected to the inside of the telescopic rod (63) by a number of third springs (76). A number of secondary wedges (75) are fixed at equal intervals on the primary wedges (73), and the secondary wedges (75) abut against the corresponding primary wedges (73). A keyway (77) is provided on the inner side of the sleeve (62) to engage with the anti-rotation key (74).

8. The anti-deformation spring compensation structure according to claim 6, characterized in that: The telescopic rod (63) is provided with a bulletproof assembly (8) for timely fixing the length of the secondary spring (66) at its end. The bulletproof assembly (8) includes a bevel gear (80) rotatably mounted at the end of the telescopic rod (63). The bevel gear (80) meshes with the bevel gear disc (46). A one-way ratchet assembly (81) is provided inside the bevel gear (80). A toothed assembly (82) is fixed on the cylindrical surface of the telescopic rod (63). A cover (83) is fixed at the end of the sleeve (62). A fourth spring (84) and a brake tooth (85) are installed inside the cover (83). The brake tooth (85) is elastically connected to the inside of the cover (83) through the fourth spring (84), and the brake tooth (85) meshes with the toothed assembly (82).

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