A hanging ear type variable diameter flipping device for a twin screw compressor

Abstract

The present invention relates to the technical field of twin-screw compressor assembly, and particularly relates to an ear-mounted variable-diameter flipping device for a twin-screw compressor, which includes a support frame. A rotatable flipping mechanism is arranged on the support frame, and a diameter-adjusting mechanism for fixing the twin-screw compressor is arranged on the flipping mechanism. The structure of the present invention is simple and compact, the operation is convenient, the site selection is flexible, the occupied space is small, the operation safety is improved, and the inconvenience caused by fixing, flipping and outer diameter change during the assembly process of the twin-screw compressor components by manual labor is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of twin-screw compressor assembly, and particularly relates to a hanger-type variable-diameter flipping device for twin-screw compressors. Background Art

[0002] Twin-screw compressors belong to positive-displacement compressors. They use two rotors with spiral grooves placed in the cylinder to mesh and rotate with each other, causing the volume between the teeth to change, thereby completing the three processes of gas suction, compression, and discharge. Since twin-screw compressors have no clearance volume, there is no expansion process of residual gas during the actual working process. There is a very small gap between the rotor and the casing, and there is no dynamic friction between them, so both the internal efficiency and mechanical efficiency are relatively high. In addition, due to its advantages such as no suction and exhaust valve devices, few wearing parts, reliable operation, convenient adjustment, and long service life, it has been increasingly widely used in the refrigeration field.

[0003] Twin-screw compressors are divided into fully enclosed, semi-enclosed, open-type, etc. Due to their large main structure volume and weight, it is difficult for workers to operate when assembling bolts and pneumatic components on the main structure. Currently, cantilever cranes are used for hoisting and assembly, with high manual assembly difficulty and high danger, resulting in low production efficiency and frequent safety accidents.

[0004] Therefore, how to assemble twin-screw compressors quickly and conveniently is an urgent problem for those skilled in the art at present. Summary of the Invention

[0005] To solve the deficiencies of the existing technology, the present invention provides a hanger-type variable-diameter flipping device for twin-screw compressors, which solves the inconvenience brought by fixing and flipping during the assembly process of twin-screw compressor components by workers.

[0006] The technical solution of the present invention is as follows:

[0007] An embodiment of the present invention provides a hanger-type variable-diameter flipping device for twin-screw compressors, including a support frame, a rotatable flipping mechanism is arranged on the support frame, and a diameter-adjusting mechanism for fixing the twin-screw compressor is arranged on the flipping mechanism.

[0008] Further, the flipping mechanism includes a flip plate, a flipping motor, and a flipping speed reducer; the flipping motor is arranged on one side of the support frame, and the flipping speed reducer is arranged on the other side of the support frame; the output shaft of the flipping motor is connected to the input end of the flipping speed reducer, and the output end of the flipping speed reducer is connected to the flip plate, and the rotation of the flipping speed reducer drives the flip plate to rotate.

[0009] Further, the flap includes a connecting portion and a diameter-adjusting mounting portion perpendicular to the connecting portion; the flap mechanism further includes a mounting cover disposed on the upper portion of the diameter-adjusting mounting portion; the connecting portion is connected to the output end of the flipping speed reducer, and the diameter-adjusting mounting portion is connected to the diameter-adjusting mechanism; a first hole for the twin-screw compressor to pass through is provided on the diameter-adjusting mounting portion.

[0010] Further, the diameter-adjusting mechanism includes a diameter-adjusting motor, a diameter-adjusting speed reducer, and a gear assembly; the output shaft of the diameter-adjusting motor is connected to the input end of the diameter-adjusting speed reducer, and the output shaft of the diameter-adjusting speed reducer is connected to the gear assembly.

[0011] Further, the gear assembly includes a first gear, a second gear, and a plurality of gear lugs evenly distributed along the circumference of the first hole; the output shaft of the diameter-adjusting speed reducer is connected to the first gear, the first gear meshes with the second gear, and the second gear meshes with the gear lugs; both ends of the gear lugs are respectively connected to the diameter-adjusting mounting portion and the mounting cover.

[0012] Further, the gear lug includes a third gear, a connecting shaft, and a diameter-adjusting arm; the third gear is disposed at one end of the connecting shaft and is integrally formed and coaxial with the connecting shaft; the diameter-adjusting arm is disposed at the other end of the connecting shaft and is perpendicular to the axis of the connecting shaft, and a fourth hole for mounting the twin-screw compressor lug is provided on the diameter-adjusting arm.

[0013] Further, a first bearing is provided at each end of the gear lug, and the gear lug is connected to the diameter-adjusting mounting portion and the mounting cover through the first bearing.

[0014] Further, the second gear is provided as a ring, and external teeth and internal teeth for meshing are provided on the inner and outer sides at one end of the second gear. The external teeth mesh with the first gear, and the internal teeth mesh with the gear lugs; a second bearing is connected to the other end of the second gear, and the second bearing is disposed on the diameter-adjusting mounting portion.

[0015] Further, the twin-screw compressor lug-type variable-diameter flipping device further includes a fixing member for fixing the flipping motor. One end of the fixing member is connected to the flipping motor, and the other end of the fixing member is connected to the support frame.

[0016] Further, the support frame includes a vertical plate and a bottom plate perpendicular to the vertical plate, and the flipping speed reducer is fixed on the vertical plate.

[0017] The beneficial effects achieved by the present invention are:

[0018] Embodiments of the present invention adopt the technical solution of setting up a flipping mechanism, which can fix and flip a twin-screw compressor. The structure is simple and compact, eliminating the need for a lifting arm for hoisting, facilitating operation, providing flexibility in site selection, occupying a small floor space, and enhancing the safety of operation.

[0019] Embodiments of the present invention adopt the technical solution of setting up a diameter-adjusting mechanism. The diameter-adjusting motor is connected to the diameter-adjusting speed reducer to drive the gear assembly to rotate, adjust the angle of the gear hanging ears, and change the internal diameter, enabling the assembly of twin-screw compressors of different models, achieving multi-purpose use of one machine, and reducing costs.

[0020] In summary, in the embodiments of the present invention, the support frame and the turning plate are connected through a turning motor and a turning speed reducer to realize the turning of the turning plate; the gear assembly is connected to the diameter-adjusting motor and the diameter-adjusting speed reducer. The diameter-adjusting motor and the diameter-adjusting speed reducer drive the first gear to rotate, drive the second gear to rotate, and transmit the power to the gear hanging ears. The gear hanging ears rotate at an angle to achieve the purpose of diameter change. The use of a two-stage gear drive to achieve diameter change realizes the fixation and displacement of twin-screw compressors with different outer diameters, and solves the inconveniences brought by manual fixation, turning, and outer diameter change during the assembly process of twin-screw compressor components. Brief Description of the Drawings

[0021] Figure 1 is the overall structural schematic diagram of an embodiment of the present invention.

[0022] Figure 2 is the overall structural schematic diagram of another perspective of an embodiment of the present invention.

[0023] Figure 3 is Figure 2 the top view schematic diagram of (the mounting cover is omitted).

[0024] Figure 4 is the overall structural exploded schematic diagram of an embodiment of the present invention.

[0025] Figure 5 is the structural schematic diagram of the turning plate of an embodiment of the present invention.

[0026] Figure 6 is the structural schematic diagram of the gear hanging ears of an embodiment of the present invention.

[0027] In the figure, 100 is a support frame; 110 is a vertical plate; 120 is a bottom plate; 200 is a flipping mechanism; 210 is a flipping plate; 211 is a connecting part; 212 is a diameter-adjusting mounting part; 213 is a first hole; 214 is a second hole; 215 is a third hole; 216 is a fifth hole; 220 is a flipping motor; 221 is a fixing part; 230 is a flipping speed reducer; 240 is a mounting cover; 250 is a second bearing; 300 is a diameter-adjusting mechanism; 310 is a diameter-adjusting motor; 320 is a diameter-adjusting speed reducer; 330 is a first gear; 340 is a second gear; 350 is a gear hanging ear; 351 is a third gear; 352 is a connecting shaft; 353 is a diameter-adjusting arm; 3531 is a fourth hole; 354 is a first bearing; 400 is a twin-screw compressor. Detailed implementation manners

[0028] To facilitate the understanding of those skilled in the art of the present invention, the following describes the specific implementation manners of the present invention with reference to the accompanying drawings.

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0030] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0031] As Figures 1 to 6 shown, the present invention provides a hanging ear type variable-diameter flipping device for a twin-screw compressor, including a support frame 100. A rotatable flipping mechanism 200 is installed on the support frame 100, and a diameter-adjusting mechanism 300 for fixing the twin-screw compressor 400 is installed on the flipping mechanism 200. This structural setting is simple, solves the drawback in the prior art that a cantilever crane is required for hoisting and assembling during the assembly process of the twin-screw compressor 400, greatly reduces the assembly difficulty and danger, and improves the production efficiency and installation safety.

[0032] The flipping plate 210 mechanism includes a flipping plate 210, a flipping motor 220, a flipping speed reducer 230, and a mounting cover 240.

[0033] The diameter adjustment mechanism 300 includes a diameter adjustment motor 310, a diameter adjustment speed reducer 320, a first gear 330, a second gear 340, and a plurality of gear lugs 350 evenly distributed along the circumferential direction of the second gear 340.

[0034] As Figures 1 to 4 , the support frame 100 includes a vertical standing plate 110 and a bottom plate 120 perpendicular to the standing plate 110. The bottom plate 120 is fixed to the ground by bolts, and a wire routing hole for wire routing is provided on the standing plate 110. To increase the connection strength of the support frame 100, a reinforcing plate is further provided between the standing plate 110 and the bottom plate 120.

[0035] On both sides of the standing plate 110, a swing speed reducer 230 and a fixing member 221 are respectively connected by screws, and the connection method can be screw connection. A swing motor 220 is connected to the fixing member 221 by screws. In this embodiment, the structure of the fixing member 221 is a circular cover-like structure, and a reserved hole for wire routing is axially provided. Of course, the structure of the fixing member 221 is not limited to this, and other structures are also possible. The swing speed reducer 230 is connected to the flap 210, and the connection method can be screw connection.

[0036] In this embodiment, the RV speed reducer is selected for the swing speed reducer 230, and other models of speed reducers can also be selected, which does not affect the protection scope of the present invention.

[0037] Specifically, the output shaft of the swing motor 220 is connected to the input end of the swing speed reducer 230, and the output end of the swing speed reducer 230 is connected to the flap 210. The rotation of the swing motor 220 drives the swing speed reducer 230 to rotate, thereby driving the flap 210 to rotate around the output end of the flap 210 speed reducer. Such a structural setting enables the twin-screw compressor 400 to be flipped to any angle during actual production and assembly. Compared with the prior art, it reduces the manual operation steps and workload, simplifies the assembly method of the compressor, and has higher operation efficiency and convenience; this structure does not require the use of a cantilever crane, so the site selection is flexible, and the assembly difficulty and danger are greatly reduced.

[0038] As Figure 5As shown, the flap 210 includes a connecting portion 211 and a diameter-adjusting mounting portion 212 perpendicular to the connecting portion 211. The connecting portion 211 and the diameter-adjusting mounting portion 212 are of an integral structure. To strengthen the structure of the flap 210, a reinforcing rib is welded between the connecting portion 211 and the diameter-adjusting mounting portion 212. The connecting portion 211 is provided with a third hole 215 for wire routing. The connecting portion 211 is connected to the output end of the flipping speed reducer 230 by screws and can be flipped with the rotation of the flipping speed reducer 230. The diameter-adjusting mounting portion is provided with a fifth hole 216, a counterbore, and a first hole 213 concentric with the counterbore. The first hole 213 allows the twin-screw compressor 400 to pass longitudinally. Three second holes 214 are evenly distributed along the circumferential direction on the counterbore. The second holes 214 are used to mount the first bearing 354, and the gear lug 350 is mounted inside the first bearing 354.

[0039] The mounting cover 240 is connected to the diameter-adjusting mounting portion 212 by screws. The mounting cover 240 is provided with an avoidance hole, which allows the twin-screw compressor 400 to pass longitudinally. The second gear 340 and the gear lug 350 are located between the diameter-adjusting mounting portion 212 and the mounting cover 240.

[0040] The diameter-adjusting mechanism 300 is mounted on the diameter-adjusting mounting portion 212. In this embodiment, the diameter-adjusting motor 310 and the diameter-adjusting speed reducer 320 are fixed by bolts, and the diameter-adjusting speed reducer 320 is fixed to the diameter-adjusting mounting portion 212 by bolts. The first gear 330 includes a gear disk and a mounting post extending from one side of the gear disk. The mounting post passes through the fifth hole 216 provided on the diameter-adjusting mounting portion 212 and is connected to the output shaft of the diameter-adjusting speed reducer 320 by bolts.

[0041] The output shaft of the diameter-adjusting motor 310 is connected to the input end of the diameter-adjusting speed reducer 320, and the output shaft of the diameter-adjusting speed reducer 320 is connected to the first gear 330. The first gear 330 meshes with the second gear 340, and the second gear 340 meshes with the gear lug 350; both ends of the gear lug 350 are connected to the diameter-adjusting mounting portion 212 and the mounting cover 240 through bearings respectively. The diameter-adjusting motor 310 drives the diameter-adjusting speed reducer 320 to rotate, the diameter-adjusting speed reducer 320 drives the first gear 330 to rotate, the first gear 330 drives the second gear 340 to mesh and rotate, and the second gear 340 drives the gear lug 350 to mesh and rotate.

[0042] Specifically, a second bearing 250 is fixedly installed on the sunk platform of the diameter-adjusting installation part 212. The second gear 340 is placed on the second bearing 250 and can rotate within the second bearing 250. Further, the second gear 340 is of an annular structure. On both the inner and outer sides at one end of the second gear 340, external teeth and internal teeth for meshing are provided. The external teeth mesh with the first gear 330, and the internal teeth mesh with the gear lug 350. At the other end of the second gear 340, a second bearing 250 is connected, and the second bearing 250 is fixed on the sunk platform of the diameter-adjusting installation part 212.

[0043] In this embodiment, the number of gear lugs 350 is three, which are evenly distributed along the circumference of the center of the second gear 340. At the upper and lower ends of each gear lug 350, a first bearing 354 is installed, and the gear lug 350 can rotate along its own axis direction. The two first bearings 354 are respectively fixedly installed on the diameter-adjusting installation part 212 and the mounting cover 240, and the gear lug 350 is connected to the diameter-adjusting installation part 212 and the mounting cover 240 through the first bearings 354.

[0044] As Figure 6 shown, the gear lug 350 includes a third gear 351, a connecting shaft 352, and a diameter-adjusting arm 353. The third gear 351 is arranged at one end of the connecting shaft 352 and is integrally formed and coaxial with the connecting shaft 352. The diameter-adjusting arm 353 is arranged at the other end of the connecting shaft 352 and is perpendicular to the axis of the connecting shaft 352. A fourth hole 3531 for installing the lug of the twin-screw compressor 400 is provided on the diameter-adjusting arm 353, and the installation method can be through bolt connection. In the diameter-adjusting mechanism, by changing the placement positions of the diameter-adjusting arms of the three gear lugs 350, twin-screw compressors 400 of different outer diameter models can be assembled and installed, realizing that only one twin-screw compressor lug-type variable-diameter flipping device can be applied to the use of equipment with different outer diameter models, with high usage flexibility and cost savings.

[0045] In summary, in this embodiment, the support frame 100 and the flap 210 are connected through the flipping motor 220 and the flipping speed reducer 230 to realize the flipping of the flap 210. The gear assembly is connected to the diameter-adjusting motor 310 and the diameter-adjusting speed reducer 320. The diameter-adjusting motor 310 and the diameter-adjusting speed reducer 320 drive the first gear 330 to rotate, drive the second gear 340 to rotate, and transmit the rotation to the gear lug 350. The gear lug 350 rotates by an angle to achieve the purpose of variable diameter. This embodiment uses a two-stage gear transmission to achieve variable diameter, realizing the fixation and displacement of twin-screw compressors 400 with different outer diameters, and solving the inconveniences brought by manual fixation, flipping, and outer diameter changes during the assembly process of the twin-screw compressor 400 components.

[0046] The embodiments of the present invention described above do not constitute a limitation on the protection scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. A double-screw compressor ear-mounted variable-diameter flipping device, characterized in that: It includes a support frame (100), on which a rotatable turning mechanism (200) is provided, and on which a diameter-adjusting mechanism (300) for fixing a twin-screw compressor (400) is provided; the diameter-adjusting mechanism (300) includes a diameter-adjusting motor (310), a diameter-adjusting speed reducer (320), a first gear (330), a second gear (340), and a number of gear lugs (350) evenly distributed along the circumferential direction of the second gear (340); the gear lug (350) includes a third gear (351), a connecting shaft (352), and a diameter-adjusting arm (353); the third gear (351) is provided at one end of the connecting shaft (352) and is integrated and coaxial with the connecting shaft (352); the diameter-adjusting arm (353) is provided at the other end of the connecting shaft (352) and is perpendicular to the axis of the connecting shaft (352), and a fourth hole (3531) for installing the lug of the twin-screw compressor (400) is provided on the diameter-adjusting arm (353).

2. The double-screw compressor ear-mounted variable-diameter flipping device according to claim 1, characterized in that: The turning mechanism (200) includes a turning plate (210), a turning motor (220), and a turning speed reducer (230). The turning motor (220) is provided on one side of the support frame (100), and the turning speed reducer (230) is provided on the other side of the support frame (100); the output shaft of the turning motor (220) is connected to the input end of the turning speed reducer (230), the output end of the turning speed reducer (230) is connected to the turning plate (210), and the rotation of the turning speed reducer (230) drives the turning plate (210) to rotate.

3. The double-screw compressor ear-mounted variable-diameter flipping device according to claim 2, characterized in that: The turning plate (210) includes a connecting portion (211) and a diameter-adjusting mounting portion (212) perpendicular to the connecting portion (211); the turning plate (210) mechanism further includes a mounting cover (240) provided on the upper part of the diameter-adjusting mounting portion (212). The connecting portion (211) is connected to the output end of the turning speed reducer (230), and the diameter-adjusting mounting portion (212) is connected to the diameter-adjusting mechanism (300). A first hole (213) for the twin-screw compressor (400) to pass through is provided on the diameter-adjusting mounting portion (212).

4. The double-screw compressor ear-mounted variable-diameter flipping device according to claim 3, characterized in that: The output shaft of the diameter-adjusting motor (310) is connected to the input end of the diameter-adjusting speed reducer (320), and the output shaft of the diameter-adjusting speed reducer (320) is connected to the first gear (330).

5. The double-screw compressor ear-mounted variable-diameter flipping device according to claim 4, characterized in that: The output shaft of the diameter-adjusting speed reducer (320) is connected to the first gear (330), the first gear (330) meshes with the second gear (340), and the second gear (340) meshes with the gear lug (350); both ends of the gear lug (350) are connected to the diameter-adjusting mounting portion (212) and the mounting cover (240).

6. The double-screw compressor ear-mounted variable-diameter flipping device according to claim 5, characterized in that: A first bearing (354) is provided at each end of the gear lug (350), and the gear lug (350) is connected to the diameter-adjusting mounting portion (212) and the mounting cover (240) respectively through the first bearing (354).

7. The double-screw compressor ear-mounted variable-diameter flipping device according to claim 5, characterized in that: The second gear (340) is arranged as a ring. External teeth and internal teeth for meshing are arranged on the inner and outer sides at one end of the second gear (340). The external teeth are meshed with the first gear (330), and the internal teeth are meshed with the gear lug (350). A second bearing (250) is connected to the other end of the second gear (340), and the second bearing (250) is arranged on the diameter-adjusting mounting part (212).

8. The double-screw compressor ear-mounted variable-diameter flipping device according to claim 2, characterized in that: The double-screw compressor lug-type variable-diameter flipping device further includes a fixing member (221) for fixing the flipping motor (220). One end of the fixing member (221) is connected to the flipping motor (220), and the other end of the fixing member (221) is connected to the support frame (100).

9. The double-screw compressor ear-mounted variable-diameter flipping device according to claim 2, characterized in that: The support frame (100) includes a vertical plate (110) and a bottom plate (120) perpendicular to the vertical plate (110). The flipping speed reducer (230) is fixed on the vertical plate (110).

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