Device convenient for mounting and dismounting spring

Abstract

The utility model relates to the technical field of compression spring dismounting auxiliary equipment, and discloses a device convenient for mounting and dismounting a spring, which comprises a fixing assembly and a spiral feeding assembly, the fixing assembly comprises a fixing seat and a screw rod, the screw rod is fixedly connected with the fixing seat, and one side of the fixing seat facing a shaft is provided with a fixing hole for accommodating the end part of the shaft; the spiral feeding assembly comprises a transmission support and a locking nut, the transmission support comprises a transmission plate, a transmission ring and a transmission rod connected between the transmission plate and the transmission ring, the locking nut is fixedly connected with the transmission plate, the locking nut and the transmission plate are both in threaded connection with the screw, and the fixing base is located in the transmission support. In practical application, the scheme realizes quick and portable disassembly and assembly of the compression spring, and the maintenance cost is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary equipment for disassembling and assembling compression springs, and particularly relates to a device for facilitating the installation and disassembly of springs. Background Art

[0002] The marine gearbox realizes the functions of speed change and direction change through the engagement and disengagement of the friction clutch, and the friction clutch realizes the engagement and disengagement function through the reciprocating movement of the return spring. The return spring is a compression spring. The clutch of the marine gearbox usually bears a large torque, so the return spring also has a high tension. Special equipment or skills are required for safe compression or release during installation or disassembly. Otherwise, the spring may fly out out of control, causing injury or damage to surrounding equipment. At present, the return spring is usually disassembled and assembled with the assistance of a compressor. However, the compressor is bulky and cannot be carried, making it difficult to meet the simple and fast disassembly and assembly of the return spring. Not only is the disassembly and assembly efficiency low, but the maintenance cost is also high. Secondly, due to the special design and compact layout of the marine gearbox, standard compressors on the market may not be directly applicable, and special adapters or connectors are required to ensure precise docking with the return spring, which increases the complexity and cost of operation. Content of the Utility Model

[0003] The utility model aims to provide a device for facilitating the installation and disassembly of springs to achieve rapid and portable disassembly and assembly of compression springs and reduce maintenance costs.

[0004] To achieve the above object, the utility model adopts the following technical scheme: A device for facilitating the installation and disassembly of springs includes a fixed component and a screw feed component. The fixed component includes a fixed seat and a screw rod. The screw rod is fixedly connected to the fixed seat. A fixing hole for accommodating the end of the shaft is opened on one side of the fixed seat facing the shaft. The screw feed component includes a transmission bracket and a locking nut. The transmission bracket includes a transmission plate, a transmission ring and a transmission rod connecting the two. The locking nut is fixedly connected to the transmission plate. Both the locking nut and the transmission plate are threadedly connected to the screw rod. The fixed seat is located inside the transmission bracket.

[0005] The principle and advantages of this solution are as follows:

[0006] 1. In actual application, the fixed seat is connected to the shaft end to keep the whole disassembly and assembly device relatively stationary with the shaft. Then, the locking nut is manually rotated to move forward or backward along the screw rod, thereby driving the transmission bracket to approach or move away from the return spring, compressing or releasing the return spring, and realizing the installation or disassembly of the return spring. Compared with the compressor with large volume, immobility and high operation difficulty, the disassembly and assembly device of this solution has a simple overall structure and simple operation. It can not only quickly complete the disassembly and assembly work of the compression spring, but also be very portable and can be carried around at any time. For clutches or other equipment devices that cannot be moved, on-site maintenance can be quickly completed, reducing downtime and downtime losses.

[0007] 2. The existing reset spring is usually compressed by a compressor during installation. When the compressor is in operation, the reset spring is usually compressed quickly and once, and it is impossible to make adjustments in the middle, making it difficult to ensure installation accuracy. When the reset spring is tilted, not only does it need to be compressed repeatedly, but the spring is easily damaged by an eccentric load on the shaft, thereby reducing the service life of the clutch. In this solution, the transmission bracket compresses the spring by manually rotating the locking nut. During the compression process, workers can directly observe the installation status of the reset spring. When tilt occurs, adjustments can be made quickly and promptly to ensure the installation accuracy and quality of the reset spring, which not only reduces time and resource costs, but also effectively extends the overall service life of the clutch.

[0008] 3. The prior art requires at least two workers to complete the disassembly and assembly through the compressor. One person adjusts and observes the relative position between the reset spring and the compressor in real time, and the other person operates the compressor to compress the reset spring. In this solution, only one worker is needed to complete the disassembly and assembly of the spring, which reduces labor costs. Moreover, compared with the high technical requirements of the compressor on the operator, the disassembly and assembly device of this solution is simple to operate, and most workers can quickly get started, which reduces training costs and effectively reduces the comprehensive cost of disassembly and assembly of the reset spring.

[0009] 4. During the disassembly process, in this solution, the locking nut is manually loosened to gradually relieve the force on the reset spring until it is in a free state. Compared with the quick disassembly of the compressor, manually controlling the loosening of the locking nut is more convenient to control the speed of spring loosening, avoiding the phenomenon that the compression spring loosens at a fast speed under the action of a large rebound force and causes a safety accident, ensuring safer disassembly and reducing safety risks.

[0010] 5. The disassembly and assembly device of this scheme has high versatility and is applicable to devices or equipment with a variety of similar shafts and compression springs. It has a simple structure and is easy to operate, which reduces equipment maintenance costs.

[0011] Furthermore, the fixing hole on the fixing seat is a threaded hole, and the threaded hole is threadedly matched with the end of the shaft.

[0012] The above arrangement provides fixed support for the entire device through the threaded connection between the fixed seat and the shaft, the relative position between the device and the shaft is fixed, and the spiral feed assembly is more stable during the process of compressing the reset spring, effectively avoiding safety accidents caused by the reset spring flying out due to compression offset.

[0013] Furthermore, the fixing seat includes a connecting block and a fixing block, which are detachably connected to each other, the connecting block is connected to the screw rod, and a fixing hole is opened on the fixing block.

[0014] The detachable connection design of the above-mentioned connecting block and the fixing block has two advantages. First, it is convenient to replace the fixing block according to shafts of different specifications and models, improving the versatility of the disassembly and assembly device. Second, when the fixing block is worn or damaged, only the fixing block needs to be replaced, reducing the maintenance cost of the device itself.

[0015] Furthermore, on the sides where the connecting block and the fixing block are in contact, an inner stop and an outer stop are respectively provided. The depth of the inner stop on the connecting block is greater than the protruding height of the outer stop on the fixing block.

[0016] The above setting ensures that the end faces of the connecting block and the fixing block are in full contact during installation, avoiding the existence of gaps between the two, which may affect the internal structure of the fixing block, thus increasing the overall reliability of the device. At the same time, the depth of the inner stop on the connecting block being greater than the protruding height of the outer stop on the fixing block also reduces the precision requirements during processing, lowering the overall cost of the device.

[0017] Furthermore, the transmission rod is of a hollow structure.

[0018] The transmission rod being of a hollow structure reduces the overall weight of the device while maintaining sufficient strength, making the device more portable and facilitating the maintenance personnel to carry it.

[0019] Furthermore, an anti-slip pad is installed on the side of the transmission ring facing the return spring.

[0020] The anti-slip pad increases the friction between the transmission ring and the return spring, effectively enhancing the stability between the transmission ring and the return spring during the compression process and preventing the return spring from flying out due to slippage between the two.

[0021] Furthermore, it also includes a transition component. The transition component includes a transition sleeve sleeved on the small journal of the shaft, and the outer diameter of the transition sleeve is the same as the diameter of the large journal.

[0022] When the journal near the shaft where the return spring is installed is a stepped shaft, to prevent the spring retaining ring from moving radially during the installation of the return spring, which may cause jamming, the transition sleeve is sleeved on the small diameter section before installation to ensure a smooth transition between the two different diameter shafts of the stepped shaft and avoid jamming. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic view of the overall structure of an embodiment of the present utility model Figure 1 。

[0024] Figure 2 is a partial cross-sectional view of an embodiment of the present utility model.

[0025] Figure 3 is a schematic view of the overall structure of an embodiment of the present utility model Figure 2 。

[0026] Figure 4 It is a structural sectional view of a friction clutch.

[0027] Figure 5 It is a schematic structural diagram of the reset spring in the to-be-installed state.

[0028] Figure 6 It is a schematic structural diagram of the reset spring in the to-be-removed state. Specific implementation manners

[0029] The following is a further detailed description through specific implementation manners:

[0030] The reference numerals in the accompanying drawings of the specification include: shaft 1, shaft circlip 2, spring retainer 3, reset spring 4, clutch piston 5, reversing gear 6, fixed seat 7, connecting block 71, fixing block 72, inner stop 73, outer stop 74, screw 8, fixing hole 9, transmission bracket 10, transmission plate 101, transmission rod 102, transmission ring 103, lock nut 11, and transition sleeve 12.

[0031] The embodiment is basically as shown in the attached... Figures 1 - 3 shown: A device facilitating the installation and removal of a spring, including a fixing component and a spiral feed component. The fixing component includes a fixed seat 7 and a screw 8. The screw 8 is fixedly connected to the fixed seat 7. A fixing hole 9 for accommodating the end of the shaft 1 is opened on one side of the fixed seat 7 facing the shaft 1. The fixing hole 9 is a threaded hole, and the threaded hole is threadedly engaged with the end of the shaft 1 to fixedly connect the fixing component to the shaft 1. The spiral feed component includes a transmission bracket 10 and a lock nut 11. The transmission bracket 10 includes a transmission plate 101, a transmission ring 103, and a transmission rod 102 connected between the two. The transmission rod 102 is fixedly welded to the transmission plate 101 and the transmission ring 103. The lock nut 11 is welded to the transmission plate 101. The lock nut 11 is threadedly connected to the screw 8. A through hole is opened on the transmission plate 101, and the screw 8 passes through the transmission plate 101 from the through hole. The transmission plate 101 is threadedly connected to the screw 8. The fixed seat 7 slides inside the transmission bracket 10 and there is no contact between the fixed seat 7 and the transmission bracket 10.

[0032] Preferably, the fixed seat 7 includes a connecting block 71 and a fixing block 72. The connecting block 71 is connected to the screw 8. A fixing hole 9 is opened on the fixing block 72. The connection between the connecting block 71 and the fixing block 72 is a detachable connection. In this embodiment, the detachable connection method is bolt connection. The above detachable design is, firstly, convenient for replacing the fixing block 72 according to different specifications and models of the shaft 1, improving the versatility of the disassembly and assembly device. Secondly, when the fixing block 72 is worn or damaged, only the fixing block 72 can be replaced, reducing the maintenance cost of the device itself.

[0033] Preferably, inner and outer stop mouths 73 and 74 are respectively provided on the sides where the connecting block 71 contacts the fixed block 72. The depth of the inner stop mouth 73 on the connecting block 71 is greater than the protruding height of the outer stop mouth 74 on the fixed block 72. In this way, it is ensured that there is no gap between the outer peripheral surfaces of the connecting block 71 and the fixed block 72 during installation, avoiding affecting the internal structure of the fixed block 72, increasing the overall reliability of the device. At the same time, the depth of the inner stop mouth 73 on the connecting block 71 being greater than the protruding height of the outer stop mouth 74 on the fixed block 72 also reduces the precision requirements during processing, reducing the overall cost of the device.

[0034] Preferably, the transmission rod 102 has a hollow structure. The hollow structure reduces the overall weight of the device while maintaining sufficient strength, making the device more portable and more conducive to the maintenance personnel carrying it conveniently.

[0035] Preferably, an anti-slip pad (not shown in the figure) is installed on the side of the transmission ring 103 facing the return spring 4. The anti-slip pad has the same shape as the transmission ring 103. The anti-slip pad increases the friction between the transmission ring 103 and the return spring 4, effectively increasing the stability between the transmission ring 103 and the return spring 4 during the compression process, preventing the return spring 4 from flying out due to slippage between the two.

[0036] Preferably, the device further includes a transition assembly. The transition assembly includes a transition sleeve 12 sleeved on the small journal of the shaft 1. The outer diameter of the transition sleeve 12 is the same as the diameter of the large journal. When the journal near the shaft where the return spring 4 is installed is a stepped shaft, to prevent the spring retaining ring 3 from generating radial movement during the installation of the return spring 4, resulting in jamming, the transition sleeve 12 is sleeved on the small diameter section before installation, ensuring a smooth transition between the two shafts with different diameters of the stepped shaft and avoiding jamming.

[0037] The overall structure of this disassembly and assembly device is simple, and the operation is simple. It can not only quickly complete the spring disassembly and assembly work, but also be very portable and can be carried around at any time. For clutches that cannot be moved, the maintenance can be quickly completed on-site, reducing the downtime and downtime losses. During actual use, the locking nut 11 is manually adjusted to control the compression of the return spring 4 by the transmission bracket 10. During the installation process, the inclination state of the return spring 4 can be observed and adjusted quickly and in a timely manner to ensure the installation accuracy. During the disassembly process, manually controlling the loosening of the locking nut 11 is more convenient to control the loosening speed of the return spring 4, avoiding the phenomenon that the return spring 4 generates a safety accident due to a relatively fast loosening speed under the action of a large return spring force, ensuring safer disassembly and reducing safety risks.

[0038] The specific implementation process is as follows:

[0039] This embodiment takes the installation and disassembly of the return spring 4 inside the friction clutch as an example to elaborate on the usage process of this disassembly and assembly device. However, this disassembly and assembly device is not only applicable to friction clutches, but also applicable to any device or equipment where a shaft is matched with a compression spring with a similar structure.

[0040] As Figure 4 shown is a structural sectional view of the friction clutch, including a shaft 1, a shaft retaining ring 2, a snap ring 3, a clutch piston 5, and a reversing gear 6. The return spring 4 is installed on the shaft 1 and its two ends respectively abut against the clutch piston 5 and the snap ring 3.

[0041] When installing the return spring 4, assemble the return spring 4 and the snap ring 3 on the shaft 1, then thread-fix the fixing seat 7 to the shaft 1 through the fixing hole 9. The transmission ring 103 of the transmission bracket 10 abuts against the snap ring 3, making the return spring 4 in a state ready for installation. The free length of the return spring 4 before compression is H. The structural schematic diagram is as Figure 5 shown. The operation method is as follows: After confirming that the installation and disassembly device is stable, rotate the locking nut 11, so that the locking nut 11 pushes the transmission bracket 10 to move spirally on the screw rod 8 through the transmission plate 101, making the transmission bracket 10 push the snap ring 3 and thus compress the return spring 4. When the length of the return spring 4 is compressed to Figure 6 the H’ shown, at this time the card slot on the shaft 1 is just completely shown. Install the shaft retaining ring 2 in the card slot on the shaft 1. After ensuring that the return spring 4 is installed correctly, slowly loosen the locking nut 11 until the installation and disassembly device is removed. At this time, the installation of the return spring 4 is completed.

[0042] When disassembling the return spring 4, assemble the installation and disassembly device on the shaft 1 so that the spring is in a state ready for disassembly. At this time, the length of the spring after installation is H’. The structural schematic diagram is as Figure 6 shown. The operation method is as follows: After confirming that the installation and disassembly device is stable, continue to rotate the locking nut 11 with a wrench. The locking nut 11 continues to push the transmission bracket 10 to move spirally on the screw rod 8 through the transmission plate 101. When the length of the return spring 4 is further compressed to H”, at this time there will be an axial gap between the shaft retaining ring 2 and the snap ring 3. Use a tool to remove the shaft retaining ring 2 on the shaft 1, then slowly loosen the locking nut 11, so that the spring gradually returns to its free length H under its own elastic force. Disassemble the installation and disassembly device, and then disassemble the snap ring 3 and the return spring 4.

[0043] The above are only the embodiments of the present utility model, and common general technical solutions and / or characteristics and the like in the solutions are not described in detail herein. It should be noted that for those skilled in the art, without departing from the technical solutions of the present utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the present utility model, and these will not affect the implementation effect of the present utility model and the practicality of the patent. The protection scope required by this application shall be subject to the content of its claims, and the specific implementation manners and the like recorded in the specification can be used to interpret the content of the claims.

Claims

1. A device for facilitating the installation and removal of springs, characterized in that: It includes a fixed component and a spiral feed component. The fixed component includes a fixed seat and a screw rod. The screw rod is fixedly connected to the fixed seat. A fixed hole for accommodating the end of the shaft is provided on the side of the fixed seat facing the shaft; the spiral feed component includes a transmission bracket and a locking nut. The transmission bracket includes a transmission plate, a transmission ring and a transmission rod connected between the two. The locking nut is fixedly connected to the transmission plate. Both the locking nut and the transmission plate are threadedly connected to the screw rod. The fixed seat is located inside the transmission bracket.

2. The device for facilitating the installation and removal of a spring according to claim 1, wherein: The fixed hole on the fixed seat is a threaded hole, and the threaded hole is in threaded fit with the end of the shaft.

3. A device for facilitating the installation and removal of a spring according to claim 2, characterized in that: The fixed seat includes a connecting block and a fixing block, and the connection between the two is detachable. The connecting block is connected to the screw rod, and the fixing block is provided with a fixed hole.

4. A device for facilitating the installation and removal of a spring according to claim 3, characterized in that: Inner and outer stop mouths are respectively provided on the sides where the connecting block and the fixing block are in contact. The depth of the inner stop mouth on the connecting block is greater than the protruding height of the outer stop mouth on the fixing block.

5. The device for facilitating the installation and disassembly of a spring according to claim 4, characterized in that: The transmission rod is of a hollow structure.

6. The device for facilitating the installation and disassembly of a spring according to claim 5, characterized in that: An anti-slip pad is installed on the side of the transmission ring facing the return spring.

7. A device for facilitating the installation and removal of a spring according to claim 6, characterized in that: It further includes a transition component. The transition component includes a transition sleeve sleeved on the small shaft neck of the shaft, and the outer diameter of the transition sleeve is the same as the diameter of the large shaft neck.

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