Dismounting device for dynamic scroll plate of scroll compressor

Abstract

The utility model discloses a vortex compressor dynamic vortex plate dismounting device which comprises a dismounting plate, three connecting holes are formed in the dismounting plate, the positions of the three connecting holes correspond to the positions of three driven shafts on a dynamic vortex plate respectively, fixing screws are arranged in the connecting holes, and the fixing screws are connected with the connecting holes. The fixing screw is used for being connected with a threaded hole in the driven shaft. Three cushion blocks are arranged in the circumferential direction of the static vortex disc, the cushion blocks are arranged on the end face of the static vortex disc in a supporting mode, three disassembling screws are arranged on the disassembling disc in the circumferential direction, the disassembling screws are in threaded connection with the disassembling disc, and the three disassembling screws can abut against the three cushion blocks correspondingly. The dismounting device is simple in structure, convenient to use and not limited by dismounting sites, and the dismounting efficiency is improved.

Description

Scroll compressor moving scroll disassembly device Technical Field

[0001] This utility model belongs to the field of scroll compressor technology, specifically relating to a scroll compressor moving scroll disassembly device. Background Technology

[0002] Scroll compressors employ a precision-machined and assembled scroll meshing structure, resulting in a compact structure, small size, and light weight. Three-point parallel four-bar anti-rotation mechanism scroll compressors require disassembly of the moving scroll during maintenance. Currently, the disassembly method involves placing the stationary scroll with its mounting surface A facing downwards, supporting it with three support blocks, and then evenly tapping the triangular top surface B of the stationary scroll with a rubber mallet. Under the combined force of gravity and the tapping, the moving scroll slowly detaches downwards. This disassembly method is inconvenient, difficult, and time-consuming, and it easily causes damage or localized deformation to both the moving and stationary scrolls, as well as jamming between them, significantly complicating the maintenance of scroll compressors. Summary of the Invention

[0003] The purpose of this utility model is to provide a disassembly device for the moving scroll of a scroll compressor, so as to solve the problems of inconvenient disassembly, high disassembly difficulty and low disassembly efficiency of the moving scroll of a scroll compressor.

[0004] This utility model is achieved through the following technical solution:

[0005] A scroll compressor moving scroll disassembly device includes a disassembly plate with three connecting holes. The positions of the three connecting holes correspond to the positions of the three driven shafts on the moving scroll. Fixing screws are installed in the connecting holes and are used to connect with threaded holes on the driven shafts.

[0006] Three pads are arranged around the circumference of the stationary volute disk, and the pads are supported on the end face of the stationary volute disk. Three disassembly screws are arranged around the circumference of the disassembly disk, and the disassembly screws are threadedly connected to the disassembly disk, so that the three disassembly screws can respectively abut against the three pads.

[0007] In some embodiments, the pad is made of a non-metallic material or a metallic material with a hardness lower than that of the static vortex disk.

[0008] In some embodiments, the pad is an arc-shaped strip structure that mates with the mounting boss of the stationary vortex disk.

[0009] In some embodiments, the pad is provided with a positioning element that cooperates with the stationary volute, the positioning element being used for positioning and installing the pad on the stationary volute.

[0010] In some embodiments, the positioning element is two positioning pins located at both ends of the pad, and the positioning pins respectively cooperate with the pin holes on the mounting boss of the stationary volute.

[0011] In some embodiments, an auxiliary disassembly fixture is also included, which includes three drive heads and a transmission mechanism. The transmission mechanism is used to drive the three drive heads to rotate synchronously about their axes, and the three drive heads can be coaxially connected to three disassembly screws respectively.

[0012] In some embodiments, the transmission mechanism includes a fixed bracket, a driving gear, and three driven gears;

[0013] The driven gear is connected to a transmission shaft, which is rotatably connected to a fixed bracket via a bearing. The driving gear is connected to a drive shaft, which is rotatably connected to a fixed bracket via a drive shaft. The driven gear is arranged circumferentially around the driving gear and meshes with the driving gear. A rocker arm is provided on the drive shaft.

[0014] The drive heads are coaxially connected to the transmission shafts.

[0015] In some embodiments, the removal screw is an external hex head or internal hex head screw, the drive head is a socket head that matches the removal screw, and the end of the drive shaft mates with the interface of the socket head.

[0016] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0017] Based on the structural characteristics of a scroll compressor, this invention utilizes the threaded hole on the driven shaft of the moving scroll and uses fixing screws to securely connect the disassembly disc to the moving scroll. A pad is designed to match the end face of the stationary scroll, expanding the upper support surface of the stationary scroll. This allows the disassembly screws to apply a pressing force to the stationary scroll, thereby achieving the disassembly of the moving scroll. The disassembly device has a simple structure, is easy to use, and is not limited by the disassembly site, thus improving disassembly efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 is a schematic diagram of the structure of the moving scroll and stationary scroll in a scroll compressor.

[0020] Figure 2 is a schematic diagram of the disassembly device structure according to an embodiment of the present invention.

[0021] Figure 3 is a top view of the disassembly device structure according to an embodiment of this utility model.

[0022] Figure 4 is a bottom view of the pad structure in the disassembly device of this utility model embodiment.

[0023] Figure 5 is a top view of the auxiliary disassembly tooling structure of an embodiment of this utility model.

[0024] Figure 6 is a bottom view of the auxiliary disassembly tooling structure of an embodiment of this utility model.

[0025] in:

[0026] 11. Moving scroll, 12. Stationary scroll, 13. Driven shaft, 14. Mounting boss, 15. Pin hole;

[0027] 21. Disassemble the disc; 22. Fixing screws; 23. Washer block; 231. Locating pin; 24. Disassemble the screws.

[0028] 31. Upper bracket, 32. Lower bracket, 33. Drive gear, 34. Driven gear, 35. Rocker arm, 36. Drive head. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0030] Referring to Figure 1, the moving scroll 11 in the scroll compressor is disposed inside the stationary scroll 12. Driven shafts 13 are connected to the three corners of the moving scroll 11, and threaded holes are provided at the ends of the driven shafts 13. Mounting bosses 14 are provided on the outer sides of the three sides of the stationary scroll 12.

[0031] Based on the structural characteristics of the moving scroll and stationary scroll in the scroll compressor, referring to Figures 2 and 3, in some embodiments of this utility model, the disassembly device for disassembling the moving scroll includes a disassembly plate 21, which is provided with three connecting holes. The positions of the three connecting holes correspond to the positions of the three driven shafts on the moving scroll, and fixing screws 22 are provided in the connecting holes. The fixing screws 22 are used to connect with the threaded holes on the driven shafts.

[0032] Three pads 23 are arranged around the circumference of the stationary volute disk. The pads 23 are supported on the end face of the stationary volute disk. Three disassembly screws 24 are arranged around the disassembly disk 21. The disassembly screws 24 are threadedly connected to the disassembly disk 21, and the positions of the three disassembly screws 24 are respectively matched with the positions of the pads, so that the three disassembly screws can respectively abut against the three pads 23.

[0033] During disassembly, the fixing screws are fixedly connected to the driven shaft through the threaded holes on the driven shaft, the disassembly plate is fixedly connected to the moving scroll plate, the three pads are respectively placed on the mounting boss of the stationary scroll plate, the three disassembly screws are evenly turned, the three disassembly screws press against the three pads respectively, and the moving scroll plate is disassembled from the stationary scroll plate by the pressing force provided by the disassembly screws at the three positions.

[0034] As can be seen from Figure 1, the available end face area for support on each side of the static scroll is very small, and the space for the disassembly screw to apply force to the static pressure plate is very small. The disassembly screw cannot effectively apply top pressure force to the static scroll. Furthermore, due to the small contact area between the disassembly screw and the static pressure plate, the force exerted by the disassembly screw on the static scroll at the contact position is relatively large. In addition, the disassembly screw and the static scroll are in rotational contact, and the rotational friction between the disassembly screw and the static scroll during rotation can easily damage the end face of the static scroll.

[0035] The mounting bosses on each side of the stationary volute are two separate boss structures. In some embodiments, the pad 23 adopts an arc-shaped strip structure that cooperates with the mounting bosses of the stationary volute. The arc-shaped structure allows the pad to better match the limited support surface on the stationary volute, enabling the pad to be stably supported on the stationary volute. The strip structure allows the pad to be supported on the two boss structures, thereby adapting to the structural characteristics of the stationary volute and expanding the area that the stationary volute can support.

[0036] A positioning element is provided on the pad 23 to mate with the stationary scroll plate. This positioning element is used for positioning and installing the pad on the stationary scroll plate. As shown in Figure 1, the A-side of the stationary scroll plate and the moving scroll plate are basically flush, and the gap between them is very small. However, because the support surface available on the stationary scroll plate is small, the pad may press against or cover the moving scroll plate, requiring repeated adjustments to its position during installation, or causing it to shift during disassembly. These issues can affect the disassembly of the moving scroll plate. By providing a positioning element on the pad, the pad is positioned and installed on the stationary scroll plate during installation, facilitating accurate positioning and preventing shifting of the pad's position.

[0037] In some embodiments, referring to FIG4, the positioning elements are two positioning pins 231 located at both ends of the pad, and the positioning pins 231 respectively cooperate with the pin holes 15 on the mounting boss of the stationary volute. The positioning and limiting of the pad are achieved through the cooperation between the positioning pins and the pin holes.

[0038] In some embodiments, the spacer 23 is made of a non-metallic material, such as plastic or wood, or a metallic material with a lower hardness than the stationary scroll plate, such as copper. The spacer provides a transitional contact between the disassembly screw and the stationary scroll plate, and the hardness of the spacer is less than that of the stationary scroll plate, thus avoiding damage to the surface of the stationary scroll plate.

[0039] In the moving scroll disassembly device, three disassembly screws are used to apply pressure to three pads at three different positions. During disassembly, the three disassembly screws need to be rotated sequentially. Not only is it difficult to control the amount of rotation of each disassembly screw, but it also affects the disassembly efficiency.

[0040] In view of the potential problems that may exist in the disassembly process of the disassembly device, in some embodiments, an auxiliary disassembly fixture is adopted, which can drive three disassembly screws to rotate simultaneously, so as to further improve the disassembly efficiency.

[0041] Referring to Figures 5 and 6, the auxiliary disassembly fixture includes three drive heads and a transmission mechanism. The transmission mechanism is used to drive the three drive heads to rotate synchronously around their axes, and the three drive heads can be coaxially connected to the three disassembly screws respectively.

[0042] The transmission mechanism includes a fixed bracket, a driving gear 33, and three driven gears 34. The fixed bracket includes an upper bracket 31 and a lower bracket 32 ​​arranged opposite to each other, which serve as the connection basis for the transmission mechanism. Both the upper and lower brackets include three support arms and are designed with a weight-reducing structure to reduce the weight of the auxiliary disassembly tooling.

[0043] A drive shaft is connected to the driven gear 34, and the drive shaft is rotatably connected to the fixed bracket through a bearing, so that the drive shaft can rotate relative to the fixed bracket; a drive shaft is connected to the driving gear 33, and the driving gear 33 is rotatably connected to the fixed bracket through the drive shaft; the driven gear 34 is arranged around the driving gear and meshes with the driving gear respectively; a rocker arm 35 is provided on the drive shaft.

[0044] The drive shaft is rotated by the rocker arm, which drives the drive gear to rotate. The drive gear simultaneously drives three driven gears to rotate, and when the driven gears rotate, they drive the corresponding transmission shafts to rotate.

[0045] The drive heads 36 are coaxially connected to the transmission shaft. When the transmission shaft rotates, it can drive each drive head to rotate, thus achieving simultaneous rotation of the three drive heads. In this way, when the drive heads are connected to the removal screws, the three removal screws can be rotated in one direction at the same time.

[0046] The auxiliary disassembly fixture has a gear ratio of less than 1 between the driving gear and the driven gear, which creates a speed reduction effect. When the rocker arm is rotated, the disassembly screw can be rotated slowly, so that the disassembly screw can slowly apply force to the stationary volute.

[0047] The disassembly screw 24 uses either an external hex head or an internal hex head screw, and the drive head 36 uses a socket head that matches the disassembly screw. The end of the drive shaft mates with the interface of the socket head. The socket head can be a standard kit from an existing socket wrench. In this case, the end of the drive shaft only needs to be designed to mate with the interface of the socket head, making the application of the auxiliary disassembly tooling more convenient and more practical.

[0048] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", and "outer" used to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0049] Furthermore, the use of terms such as "horizontal" or "vertical" in the description of this utility model does not imply that the component is required to be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0050] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0051] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A disassembly device for the moving scroll of a scroll compressor, characterized in that, The device includes a disassembly plate with three connecting holes, the positions of which correspond to the positions of three driven shafts on the moving scroll. Each connecting hole contains a fixing screw for connection to a threaded hole on the driven shaft. Three pads are arranged circumferentially around the stationary scroll, supporting the end face of the stationary scroll. Three disassembly screws are also arranged circumferentially on the disassembly plate, threadedly connected to the disassembly plate, allowing each screw to abut against one of the three pads.

2. The scroll compressor moving scroll disassembly device according to claim 1, characterized in that, The pad is made of non-metallic material or metallic material with a hardness lower than that of the static vortex disk.

3. The scroll compressor moving scroll disassembly device according to claim 1, characterized in that, The pad is an arc-shaped strip structure that mates with the mounting boss of the stationary vortex disk.

4. The scroll compressor moving scroll disassembly device according to claim 1 or 3, characterized in that, The pad is provided with a positioning element that cooperates with the stationary volute disk. The positioning element is used for positioning and installing the pad on the stationary volute disk.

5. The scroll compressor moving scroll disassembly device according to claim 4, characterized in that, The positioning element consists of two positioning pins located at both ends of the pad, and the positioning pins respectively cooperate with the pin holes on the mounting boss of the stationary volute.

6. The scroll compressor moving scroll disassembly device according to claim 1, characterized in that, It also includes an auxiliary disassembly fixture, which includes three drive heads and a transmission mechanism. The transmission mechanism is used to drive the three drive heads to rotate synchronously around their axes, and the three drive heads can be coaxially connected to three disassembly screws respectively.

7. The scroll compressor moving scroll disassembly device according to claim 6, characterized in that, The transmission mechanism includes a fixed bracket, a driving gear, and three driven gears; a drive shaft is connected to the driven gear, and the drive shaft is rotatably connected to the fixed bracket via bearings; a drive shaft is connected to the driving gear, and the driving gear is rotatably connected to the fixed bracket via the drive shaft; the driven gears are arranged circumferentially around the driving gear and mesh with the driving gear respectively; a rocker arm is provided on the drive shaft; and the drive heads are coaxially connected to the drive shaft respectively.

8. The scroll compressor moving scroll disassembly device according to claim 7, characterized in that, The disassembly screw is an external hex head or internal hex head screw, the drive head is a socket head that matches the disassembly screw, and the end of the drive shaft mates with the interface of the socket head.

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