Motor coupling shaft with anti-collision structure

Abstract

The utility model discloses a motor coupling shaft with an anti-collision structure, which comprises a pump, a motor, a coupling shaft body and a convex plate, a rotor shaft is arranged at one end of the motor, the pump is connected with a transmission shaft, the transmission shaft is connected with the rotor shaft through the coupling shaft body, bearings are arranged at two ends of the side surface of the coupling shaft body, and the convex plate is arranged on the coupling shaft body. A plurality of connecting blocks are arranged on the outer side of the bearing, the connecting blocks are connected with movable columns, the movable columns are connected with movable sleeves, the movable sleeves are connected with elastic rings, the movable sleeves on one side of the connecting shaft body are connected to the inner side of the same elastic ring, a plurality of bolts are connected to the outer side of the elastic ring, and the bolts are connected with threaded holes. When the side face of the connecting shaft is collided, the connecting shaft can be well protected, only the convex plate and the concave plate at the part need to be replaced after the device is collided and a part of the convex plate and the concave plate are damaged, and the maintenance cost of the device is reduced.

Description

A motor coupling shaft with anti-collision structure Technical Field

[0001] This utility model relates to the field of anti-collision technology for connecting shafts, specifically a motor connecting shaft with an anti-collision structure. Background Technology

[0002] Motor connecting shafts are also commonly referred to as "couplings" or "coupling joints." These are different names for the same device, mainly used to connect the motor shaft and the shaft of the load equipment to achieve power transmission and shaft system connection. Among them, Chinese Patent No. CN202022465087.3 discloses a buffer coupling, which relates to the field of coupling technology. This utility model includes an upper coupling, an inner buffer device, a lower coupling, a connecting device, and an outer buffer device. The upper coupling includes an upper shaft seat, which is a hollow cylinder. The lower surface of the upper shaft sleeve is provided with a first retaining tooth. The inner buffer device includes a first gasket, a diaphragm, and a second gasket. The side surface of the first gasket is connected to the inner surface of the upper shaft seat. The upper and lower surfaces of the diaphragm are provided with grooves. The groove on the upper surface of the diaphragm slides in cooperation with the first retaining tooth. The lower coupling includes a lower shaft seat, one surface of which is provided with a mounting hole. This utility model discloses a buffer coupling, which includes a shim to reduce axial impact during the engagement of two shafts, a spring to mitigate axial impact during engagement, a diaphragm and a buffer cylinder to reduce radial load damage to the shafts, and a connecting shell to facilitate disassembly of the coupling.

[0003] Based on the above, the inventors have discovered the following problems: The above-mentioned device can buffer the axial force of the connecting shaft, but it ignores the protection of the side of the connecting shaft. During the operation of the connecting shaft, if it is hit by an external force from the side, the connecting shaft body will be damaged. Moreover, the existing connecting shaft protective shells generally resist external impact by shell deformation. When the protective shell is deformed by an external force, its protective effect will be greatly reduced, and a new protective shell needs to be replaced, resulting in high maintenance costs. Summary of the Invention

[0004] To achieve the above objectives, this utility model provides the following technical solution: a motor connecting shaft with an anti-collision structure, comprising a pump and a motor, a connecting shaft body, and a convex plate. One end of the motor is provided with a rotor shaft, and the pump is connected to a transmission shaft. The transmission shaft and the rotor shaft are connected via the connecting shaft body. Bearings are provided at both ends of the side of the connecting shaft body. Several connecting blocks are provided on the outer side of the bearings. Movable columns are connected to the connecting blocks, and movable sleeves are connected to the movable columns. Elastic rings are connected to the movable sleeves on one side of the connecting shaft body. Several bolts are connected to the outer side of the elastic ring, and the bolts are connected to threaded holes. The threaded holes are located at both ends of the convex plate, and both ends of the convex plate are respectively connected to a pair of bolts on the same horizontal line at both ends of the connecting shaft body. A concave plate is provided between adjacent convex plates.

[0005] Furthermore, the movable sleeve has a movable hole inside, one end of the movable column extends into the movable hole, the side of the movable column that fits with the movable hole has a rubber layer, and the end of the movable sleeve away from the movable column has a through hole.

[0006] Furthermore, both sides of the concave plate are provided with sliders, and both sides of the convex plate are provided with grooves. The sliders are movably disposed in the grooves, and the sliders are adapted to the grooves.

[0007] Furthermore, a rubber pad is provided on the side of the slider that fits into the groove.

[0008] Furthermore, a movable gap is provided between the concave plate and the elastic ring.

[0009] Furthermore, the size of the slider is smaller than the size of the groove.

[0010] Furthermore, the convex plate and the concave plate have the same length.

[0011] Compared with the prior art, the beneficial effects of this utility model are: the motor connecting shaft with anti-collision structure is reasonable and has the following advantages:

[0012] (1) Through the design of movable gaps, sliders and grooves, the force that collided with the concave plate and convex plate can be initially consumed, thereby reducing the direct transmission of this force to sensitive parts or connecting shafts. The design of movable gaps and grooves allows the slider to move during collision, absorbing some kinetic energy, which is then gradually consumed by friction. With the cooperation of rubber pads, the impact force can be further absorbed. Furthermore, through its elastic deformation characteristics, it can provide a certain buffering effect, avoiding excessive impact force and causing wear and damage to system components. Moreover, through the design of movable columns and movable holes, the movable columns can move under the action of external force, so that the collision force is converted and consumed, achieving the effect of further consuming the remaining collision force. This comprehensively realizes the anti-collision effect of the connecting shaft, ensuring that the connecting shaft maintains its integrity during long-term operation, reducing the occurrence of failures, and thus achieving an efficient, stable and safe motor drive system.

[0013] (2) Through the design of the bearing, when the rotor shaft rotates, it will drive the outer ring of the bearing to rotate slightly, which will drive the components on the bearing to rotate, gradually restoring the movable column and movable sleeve, the concave plate and the convex plate to their initial positions, thus preparing for the next collision of this device, so that this device always has a protective effect, and can achieve continuous protection of the connecting shaft, ensuring the normal operation of the drive system; and through the combined installation of the concave plate and the convex plate, when a part of the concave plate and the convex plate are damaged by the collision force, it is not necessary to replace the whole device, only the damaged concave plate and the convex plate need to be replaced, so that this device has a long service life and reduces the maintenance cost of this device. Attached Figure Description

[0014] Figure 1 is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 is an enlarged structural schematic diagram of this utility model;

[0016] Figure 3 is an exploded structural diagram of this utility model;

[0017] Figure 4 is a cross-sectional structural diagram of this utility model;

[0018] Figure 5 is an enlarged structural schematic diagram of section A of this utility model.

[0019] In the diagram: 1. Pump; 2. Motor; 3. Drive shaft; 4. Connecting shaft; 6. Rotor shaft; 7. Bearing; 8. Connecting block; 9. Elastic ring; 10. Movable sleeve; 11. Bolt; 12. Protruding plate; 13. Concave plate; 14. Movable column; 15. Sliding block; 16. Slide groove; 17. Movable gap; 18. Threaded hole; 19. Movable hole; 20. Through hole. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please refer to Figures 1-5, which illustrate a technical solution provided by this utility model:

[0022] Example:

[0023] In this embodiment, a motor connecting shaft with an anti-collision structure includes a pump 1, a motor 2, a connecting shaft body 4, and a convex plate 12. One end of the motor 2 is provided with a rotor shaft 6. The pump 1 is connected to a transmission shaft 3. The transmission shaft 3 and the rotor shaft 6 are connected through the connecting shaft body 4. Bearings 7 are provided at both ends of the side of the connecting shaft body 4. Several connecting blocks 8 are provided on the outside of the bearings 7. The connecting blocks 8 are connected to movable columns 14. Movable sleeves 10 are connected to movable columns 14. Movable sleeves 10 are connected to elastic rings 9. Several movable sleeves 10 on one side of the connecting shaft body 4 are connected to the same elastic ring 9. Several bolts 11 are connected to the outside of the elastic ring 9. The bolts 11 are connected to threaded holes 18. The threaded holes 18 are opened at both ends of the convex plate 12. Both ends of the convex plate 12 are respectively connected to a pair of bolts 11 on the same horizontal line at both ends of the connecting shaft body 4. A concave plate 13 is provided between adjacent convex plates 12.

[0024] When this device is impacted, the outer convex plate 12 and concave plate 13 are first subjected to the impact force. With the cooperation of the slider 15, the slide groove 16, and the movable gap 17, the impact force causes relative movement between the convex plate 12 and the concave plate 13, and relative movement between the slider 15 and the slide groove 16. Thus, a portion of the impact force is converted into movement between the slider 15 and the slide groove 16. Furthermore, the design of the rubber pad increases the friction between the slider 15 and the slide groove 16, thereby absorbing a larger impact force. The weakened impact force is then absorbed by the convex plate 12. 2. The deformation of the concave plate 13 and the elastic ring 9 consumes the remaining impact force, which is then converted into the relative movement of the movable column 14 and the movable hole 19 under the cooperation of the movable column 14 and the movable hole 19. The impact force is transmitted from the convex plate 12 and the concave plate 13 to the elastic ring 9, and then to the movable column 14 and the movable hole 19. During this transmission process, the impact force is gradually reduced from the outside to the inside, so that the internal connecting shaft 4 is not affected by the external impact force to the greatest extent, thereby achieving a comprehensive protection effect for the connecting shaft 4.

[0025] When this device is impacted and its surface protrusions 12 and concave plates 13 are undamaged, under the action of bearing 7 and connecting shaft 4, the rotor shaft 6 rotates, which in turn drives the connecting shaft 4 to rotate in the same direction. When the inner ring rotates, the rolling elements (such as balls or rollers) roll between the inner and outer rings. There is a contact force between the rolling elements and the outer ring, which is transmitted to the outer ring, causing the outer ring of bearing 7 to rotate slightly. This, in turn, causes the components on bearing 7 to rotate, gradually restoring the movable column 14 and movable sleeve 10, and the concave plate 13 and protrusion 12 to their initial positions. This prepares the device for protection against the next impact.

[0026] Furthermore, when a portion of the concave plate 13 and convex plate 12 are damaged by impact force, it is not necessary to replace the entire device; only the damaged concave plate 13 and convex plate 12 need to be replaced, thus extending the service life of the device and reducing its maintenance costs.

[0027] The movable sleeve 10 has a movable hole 19 inside, one end of the movable column 14 extends into the movable hole 19, the side of the movable column 14 that fits with the movable hole 19 is provided with a rubber layer, and the end of the movable sleeve 10 away from the movable column 14 is provided with a through hole 20.

[0028] By moving the movable column 14 within the movable hole 19 of the movable sleeve 10, and with a rubber layer on the side of the movable column 14 that is in contact with the inner wall of the movable hole 19, when the impact force is transmitted to the movable sleeve 10, it causes the movable hole 19 and the inner wall of the movable column 14 to move relative to each other, thereby consuming the impact force. The rubber layer can also increase the friction between the movable hole 19 and the movable column 14, further increasing the consumption of the impact force, and thus achieving a protective effect on the connecting shaft 4.

[0029] The concave plate 13 is provided with sliders 15 on both sides, and the convex plate 12 is provided with grooves 16 on both sides. The sliders 15 are movably disposed in the grooves 16, and the sliders 15 are adapted to the grooves 16.

[0030] The slider 15 is provided with a rubber pad on the side that fits against the slide groove 16;

[0031] The rubber pad design increases the friction between the slider 15 and the groove 16, thereby increasing the impact force on the side of the connecting shaft 4.

[0032] A movable gap 17 is provided between the concave plate 13 and the elastic ring 9;

[0033] The design of the movable gap 17 allows relative movement between the convex plate 12 and the concave plate 13, thereby converting the collision force into a moving force and consuming the collision force. This avoids direct damage to the accessories near the connecting shaft 4 by the collision force, and gradually reduces the collision force from the outside to the inside, protecting the integrity of the device. The first parts to be damaged are the outer convex plate 12 and the concave plate 13, which also reduces the maintenance difficulty for maintenance personnel.

[0034] The size of the slider 15 is smaller than the size of the groove 16;

[0035] The size and shape of the slider 15 and the groove 16 are not limited. The slider 15 is always located in the groove 16 and moves within the groove 16.

[0036] The convex plate 12 and the concave plate 13 have the same length.

[0037] Working principle: When this device is impacted, the outer convex plate 12 and concave plate 13 are first subjected to the impact force. With the cooperation of the slider 15, the slide groove 16, and the movable gap 17, the impact force causes relative movement between the convex plate 12 and the concave plate 13, and relative movement between the slider 15 and the slide groove 16. Thus, part of the impact force is converted into movement between the slider 15 and the slide groove 16. Furthermore, the design of the rubber pad increases the friction between the slider 15 and the slide groove 16, thereby absorbing a large amount of the impact force. The weakened impact force is further absorbed by the deformation of the convex plate 12, the concave plate 13, and the elastic ring 9. Finally, the remaining impact force is converted into movement by the cooperation of the movable column 14 and the movable hole 19. The relative movement of the moving column 14 and the movable hole 19 causes the aforementioned collision force to travel sequentially from the convex plate 12 and concave plate 13 to the elastic ring 9, and then to the moving column 14 and the movable hole 19. During this transmission process, the collision force is gradually reduced from the outside to the inside, so that the internal connecting shaft 4 is not affected by the external collision force to the greatest extent, thereby achieving a comprehensive protection effect for the connecting shaft 4. When the device is impacted and its surface convex plate 12 and concave plate 13 are not damaged, under the action of the bearing 7 and the connecting shaft 4, when the rotor shaft 6 rotates, it will drive the connecting shaft 4 to rotate in the same direction. When the inner ring rotates, the rolling elements (such as balls or rollers) will roll between the inner and outer rings. There is a contact force between the rolling element and the outer ring. This contact force is transmitted to the outer ring, causing the outer ring of the bearing 7 to rotate slightly. This, in turn, causes the components on the bearing 7 to rotate, gradually restoring the movable column 14 and movable sleeve 10, as well as the concave plate 13 and convex plate 12, to their initial positions. This prepares the device for protection against future collisions. Furthermore, when a portion of the concave plate 13 and convex plate 12 is damaged by a collision, it is not necessary to replace the entire device; only the damaged concave plate 13 and convex plate 12 need to be replaced. This extends the device's service life and reduces its maintenance costs.

[0038] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A motor coupling shaft with an anti-collision structure, comprising a pump (1) and a motor (2), a coupling shaft body (4), and a convex plate (12), characterized in that: The motor (2) has a rotor shaft (6) at one end, the pump (1) is connected to a transmission shaft (3), the transmission shaft (3) and the rotor shaft (6) are connected by a connecting shaft (4), the connecting shaft (4) has bearings (7) at both ends on both sides, the bearings (7) have several connecting blocks (8) on the outside, the connecting blocks (8) are connected to movable columns (14), the movable columns (14) are connected to movable sleeves (10), the movable sleeves (10) are connected to elastic rings (9), and several movable sleeves (10) on one side of the connecting shaft (4) are connected to the same elastic ring (9) inside, the elastic ring (9) is connected to several bolts (11) on the outside, the bolts (11) are connected to threaded holes (18), the threaded holes (18) are opened at both ends of the convex plate (12), and the two ends of the convex plate (12) are respectively connected to a pair of bolts (11) on the same horizontal line at both ends of the connecting shaft (4), and concave plates (13) are provided between adjacent convex plates (12).

2. A motor coupling shaft with an anti-collision structure according to claim 1, characterized in that: The movable sleeve (10) has a movable hole (19) inside. One end of the movable column (14) extends into the movable hole (19). The side of the movable column (14) that is in contact with the movable hole (19) is provided with a rubber layer. The end of the movable sleeve (10) away from the movable column (14) is provided with a through hole (20).

3. A motor coupling shaft with an anti-collision structure according to claim 2, characterized in that: The concave plate (13) is provided with sliders (15) on both sides, and the convex plate (12) is provided with grooves (16) on both sides. The sliders (15) are movably disposed in the grooves (16), and the sliders (15) and the grooves (16) are adapted to each other.

4. A motor coupling shaft with an anti-collision structure according to claim 3, characterized in that: The slider (15) is fitted with a rubber pad on the side where it fits into the groove (16).

5. A motor coupling shaft with an anti-collision structure according to claim 4, characterized in that: A movable gap (17) is provided between the concave plate (13) and the elastic ring (9).

6. The electric machine coupling shaft with anti-collision structure according to claim 5, characterized in that: The size of the slider (15) is smaller than the size of the groove (16).

7. The electric machine coupling shaft with anti-collision structure according to claim 6, characterized in that: The convex plate (12) and the concave plate (13) have the same length.

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