Novel coupling and crane rotation driving device

Abstract

The utility model discloses a novel coupling and a crane rotation driving device, which are arranged between two groups of rotating shafts, and are characterized in that the novel coupling comprises two groups of connecting sleeves, the two groups of connecting sleeves are connected with each other, and the two groups of connecting sleeves are respectively sleeved on the outer walls of the two groups of rotating shafts; reinforcing sleeves are arranged on the two sets of connecting sleeves, the reinforcing sleeves are arranged between the connecting sleeves and the rotating shaft, the outer walls of the reinforcing sleeves are sleeved with positioning sleeves, the positioning sleeves and the reinforcing sleeves are coaxially arranged, and positioning bolts connected with the connecting sleeves are arranged on the positioning sleeves, so that the reinforcing sleeves are fixed between the connecting sleeves and the rotating shaft through the positioning sleeves; the connecting sleeve has the advantages that the connecting stability and torsion resistance between the connecting sleeve and the rotating shaft are effectively improved through cooperation of the reinforcing sleeve and the positioning sleeve, meanwhile, reliable positioning of the reinforcing sleeve in the axial direction and the radial direction is guaranteed through the fastening effect of the positioning bolt, and the loosening risk in the transmission process is greatly reduced.

Description

Technical Field

[0001] This utility model relates to a novel coupling and a crane rotation drive device. Background Technology

[0002] In the rotary drive systems of heavy machinery such as cranes, couplings, as the core transmission components connecting the drive motor and the gearbox, directly affect the overall performance of the equipment due to their reliability and durability. Traditional couplings mostly adopt a rigid connection method with keyway fit, transmitting torque through a single key structure. Over long-term operation, stress concentration easily occurs, leading to accelerated local wear of the keyway and even key shear failure. Moreover, the limited contact area of ​​traditional key connections makes circumferential slippage prone to occur during torque transmission, resulting in loosening of the connection and, in severe cases, misalignment of the transmission system. Therefore, this invention proposes a novel coupling and a crane rotary drive system to solve the above problems. Utility Model Content

[0003] The purpose of this invention is to provide a novel coupling and a crane rotation drive device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A novel coupling is disposed between two sets of rotating shafts, comprising two sets of connecting sleeves, the two sets of connecting sleeves being connected to each other, and the two sets of connecting sleeves being respectively fitted onto the outer walls of the two sets of rotating shafts;

[0006] Both sets of connecting sleeves are provided with reinforcing sleeves, which are disposed between the connecting sleeve and the rotating shaft. The outer wall of the reinforcing sleeve is fitted with a positioning sleeve, which is coaxially disposed with the reinforcing sleeve. The positioning sleeve is provided with a positioning bolt that connects to the connecting sleeve, so that the positioning sleeve fixes the reinforcing sleeve between the connecting sleeve and the rotating shaft.

[0007] As an improvement to the above technical solution, the reinforcing sleeve includes two sets of first reinforcing half-rings with identical structures, and a second reinforcing half-ring is provided on the first reinforcing half-ring;

[0008] The positioning sleeve is provided with a first positioning ring and a second positioning ring. The first positioning ring is sleeved on the outer wall of the two sets of first reinforcing half rings, and the second positioning ring is sleeved on the outer wall of the two second reinforcing half rings.

[0009] As an improvement to the above technical solution, multiple sets of first reinforcing blocks are evenly arranged between the two sets of first reinforcing semi-rings, and multiple sets of first reinforcing grooves are evenly opened on the outer wall of the connecting sleeve, with the multiple sets of first reinforcing grooves matching the multiple sets of first reinforcing blocks.

[0010] As an improvement to the above technical solution, multiple sets of second reinforcing blocks are evenly arranged between the two sets of second reinforcing semi-rings, and multiple sets of second reinforcing grooves are evenly opened on the outer wall of the rotating shaft, with the multiple sets of second reinforcing grooves matching the multiple sets of second reinforcing blocks.

[0011] As an improvement to the above technical solution, a reinforcing half-ring plate is provided between the first reinforcing half-ring and the second reinforcing half-ring, and a plurality of reinforcing holes are uniformly provided on the reinforcing half-ring plate.

[0012] Multiple sets of positioning holes are evenly formed on the second positioning ring;

[0013] The connecting sleeve has multiple sets of connecting holes evenly distributed on it;

[0014] The positions and sizes of the multiple sets of reinforcing holes, multiple sets of positioning holes, and multiple sets of connecting holes are matched, and the positioning bolts are arranged between the reinforcing holes, positioning holes, and connecting holes.

[0015] As an improvement to the above technical solution, the two sets of rotating shafts are respectively the output shaft of the drive motor and the input shaft of the gearbox.

[0016] A crane rotation drive device, characterized in that it includes a novel coupling as described in any one of the above-mentioned claims.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] By setting up a reinforcing sleeve and a positioning sleeve in synergy, the connection stability and torsional resistance between the connecting sleeve and the rotating shaft are effectively improved. At the same time, the tightening effect of the positioning bolts ensures the reliable positioning of the reinforcing sleeve in the axial and radial directions, greatly reducing the risk of loosening during transmission. It can also enhance the rigid connection of torque transmission. The structure of adding a reinforcing sleeve on the basis of key connection can make the stress distribution more uniform and reduce the risk of local wear of keyway. This structure is especially suitable for heavy-duty equipment such as cranes. It can maintain high reliability under complex working conditions, extend the service life of couplings and reduce maintenance costs, and has outstanding practical value. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram showing the connection between a set of connecting sleeves and a set of rotating shafts according to this utility model;

[0021] Figure 3 This is a schematic diagram showing the positions of the connecting sleeve and the reinforcing sleeve of this utility model;

[0022] Figure 4 This is a schematic diagram of the connecting sleeve of this utility model;

[0023] Figure 5 This utility model Figure 2 Enlarged structural diagram at point A;

[0024] Figure 6 This is a top view of the reinforcing sleeve of this utility model;

[0025] Figure 7 This utility model Figure 6 A schematic cross-sectional view of BB;

[0026] Figure 8 This is a schematic diagram of the structure of the reinforcing sleeve of this utility model;

[0027] Figure 9 This is a schematic diagram showing the positions of the first reinforcing half-ring and the second reinforcing half-ring of this utility model;

[0028] Figure 10 This is a schematic diagram of the positioning sleeve of this utility model.

[0029] In the figure: 10, connecting sleeve; 11, first reinforcing groove; 12, connecting hole; 20, rotating shaft; 21, second reinforcing groove; 30, reinforcing sleeve; 31, first reinforcing half ring; 311, first reinforcing block; 32, second reinforcing half ring; 321, second reinforcing block; 33, reinforcing half ring plate; 331, reinforcing hole; 40, positioning sleeve; 41, first positioning ring; 42, positioning hole; 43, second positioning ring. Detailed Implementation

[0030] 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.

[0031] Example:

[0032] like Figure 1-10 As shown, this embodiment proposes a novel coupling, which is disposed between two sets of rotating shafts 20 and includes two sets of connecting sleeves 10. The two sets of connecting sleeves 10 are connected to each other, and the two sets of connecting sleeves 10 are respectively fitted onto the outer walls of the two sets of rotating shafts 20.

[0033] Both sets of connecting sleeves 10 are provided with reinforcing sleeves 30. The reinforcing sleeves 30 are disposed between the connecting sleeves 10 and the rotating shaft 20. The outer wall of the reinforcing sleeve 30 is fitted with a positioning sleeve 40. The positioning sleeve 40 is coaxially disposed with the reinforcing sleeve 30. The positioning sleeve 40 is provided with a positioning bolt that connects to the connecting sleeve 10, so that the positioning sleeve 40 fixes the reinforcing sleeve 30 between the connecting sleeve 10 and the rotating shaft 20.

[0034] In this case, the rotating shaft 20 and the connecting sleeve 10 are connected by a key.

[0035] In this embodiment, when the coupling is installed between two sets of rotating shafts 20, the positioning sleeve 40 is first fitted onto the outer wall of the rotating shaft 20, and then the reinforcing sleeve 30 is installed between the rotating shaft 20 and the connecting sleeve 10. At the same time, the connecting sleeve 10 is fitted onto the outer wall of the rotating shaft 20, and the position of the positioning sleeve 40 is adjusted so that the positioning sleeve 40 is fitted onto the outer wall of the reinforcing sleeve 30. The positioning sleeve 40 is then fixed between the connecting sleeve 10 and the rotating shaft 20 by the positioning bolt, thereby completing the reinforcement process between the connecting sleeve 10 and the rotating shaft 20.

[0036] By setting up the synergistic cooperation between the reinforcing sleeve 30 and the positioning sleeve 40, the connection stability and torsional resistance between the connecting sleeve 10 and the rotating shaft 20 are effectively improved. At the same time, the tightening effect of the positioning bolts ensures the reliable positioning of the reinforcing sleeve 30 in the axial and radial directions, greatly reducing the risk of loosening during transmission. Moreover, it can enhance the rigid connection of torque transmission. The structure of adding the reinforcing sleeve 30 on the basis of the key connection can make the stress distribution more uniform and reduce the risk of local wear of the keyway. This structure is especially suitable for heavy-duty equipment such as cranes, which can maintain high reliability under complex working conditions, extend the service life of the coupling and reduce maintenance costs, and has outstanding practical value.

[0037] Specifically, the reinforcing sleeve 30 includes two sets of first reinforcing semi-rings 31 with identical structures, and a second reinforcing semi-ring 32 is provided on the first reinforcing semi-ring 31;

[0038] The positioning sleeve 40 is provided with a first positioning ring 41 and a second positioning ring 43. The first positioning ring 41 is sleeved on the outer wall of two sets of first reinforcing half rings 31, and the second positioning ring 43 is sleeved on the outer wall of two second reinforcing half rings 32.

[0039] In this embodiment, when the reinforcing sleeve 30 is placed between the connecting sleeve 10 and the rotating shaft 20, the first reinforcing half-ring 31 and the second reinforcing half-ring 32 are respectively brought into contact with the outer walls of the connecting sleeve 10 and the rotating shaft 20, and then the positioning sleeve 40 is used to make the first reinforcing half-ring 31 and the second reinforcing half-ring 32 form a complete ring.

[0040] The modular assembly of two sets of first reinforcing semi-rings 31 and second reinforcing semi-rings 32 forms a detachable multi-level reinforcing layer, which not only ensures a tight fit with the rotating shaft 20 and connecting sleeve 10, but also greatly simplifies the installation process. Moreover, the combination of the split reinforcing sleeve 30 and the positioning sleeve 40 significantly improves the torsional stiffness, and can still maintain stable torque transmission under heavy load impact conditions, reduce the risk of component wear, and extend service life. At the same time, this design ensures high load-bearing performance while taking into account the convenience of disassembly and assembly, and is especially suitable for applications such as cranes that require frequent maintenance.

[0041] Specifically, multiple sets of first reinforcing blocks 311 are evenly arranged between the two sets of first reinforcing semi-rings 31, and multiple sets of first reinforcing grooves 11 are evenly opened on the outer wall of the connecting sleeve 10, with the multiple sets of first reinforcing grooves 11 being adapted to the multiple sets of first reinforcing blocks 311.

[0042] Specifically, multiple sets of second reinforcing blocks 321 are evenly arranged between the two sets of second reinforcing semi-rings 32, and multiple sets of second reinforcing grooves 21 are evenly opened on the outer wall of the rotating shaft 20. The multiple sets of second reinforcing grooves 21 are adapted to the multiple sets of second reinforcing blocks 321.

[0043] In this embodiment, the fitting of the first reinforcing block 311 and the first reinforcing groove 11 forms a multi-point distributed shear-resistant surface, which significantly improves the torque transmission efficiency between the connecting sleeve 10 and the first reinforcing half-ring 31 and avoids deformation or failure caused by local stress concentration; the matching of the second reinforcing block 321 and the second reinforcing groove 21 enhances the circumferential locking capability between the rotating shaft 20 and the second reinforcing half-ring 32, ensuring the continuity and stability of power transmission;

[0044] Of course, the uniformly arranged first reinforcing block 311, first reinforcing groove 11, and second reinforcing block 321 and second reinforcing groove 21 will distribute the transmission load to the multi-level mating surface, effectively reducing the single-point bearing pressure. At the same time, the stress distribution is optimized through geometric symmetry design, reducing vibration and uneven wear, and improving the overall fatigue resistance of the coupling. It is especially suitable for shaft connection requirements in heavy-load and high-impact scenarios such as cranes.

[0045] Specifically, a reinforcing semi-ring plate 33 is provided between the first reinforcing semi-ring 31 and the second reinforcing semi-ring 32, and a plurality of reinforcing holes 331 are uniformly provided on the reinforcing semi-ring plate 33.

[0046] Multiple sets of positioning holes 42 are evenly provided on the second positioning ring 43;

[0047] Multiple sets of connection holes 12 are evenly provided on the connecting sleeve 10;

[0048] The positions and sizes of the multiple sets of reinforcing holes 331, multiple sets of positioning holes 42, and multiple sets of connecting holes 12 are matched, and the positioning bolts are arranged between the reinforcing holes 331, positioning holes 42, and connecting holes 12.

[0049] In this embodiment, the reinforcing semi-ring plate 33 spans the first reinforcing semi-ring 31 and the second reinforcing semi-ring 32, forming an axially rigid support skeleton. Combined with the evenly distributed reinforcing holes 331, it effectively improves the structural integrity between the two reinforcing semi-rings and suppresses radial deformation caused by torque transmission. At the same time, the through-matching design of the reinforcing holes 331, positioning holes 42 and connecting holes 12, through the pre-tightening force applied by the positioning bolts, forms a three-dimensional constraint network of the reinforcing sleeve 30, positioning sleeve 40 and connecting sleeve 10, which greatly enhances the bending stiffness and torsional performance of the coupling.

[0050] Specifically, the two sets of rotating shafts 20 are the output shaft of the drive motor and the input shaft of the gearbox, respectively.

[0051] In this embodiment, the coupling directly connects the drive motor and the gearbox in series. The composite reinforcement structure of the reinforcing sleeve 30 and the positioning sleeve 40 effectively buffers the instantaneous impact load generated by the high-frequency start and stop of the motor, avoiding the risk of shaft deformation or breakage caused by sudden torque changes in traditional rigid couplings, and ensuring the continuity and stability of the power transmission chain.

[0052] A crane rotation drive device includes a novel coupling as described in any one of the above claims.

[0053] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel coupling, disposed between two sets of rotating shafts (20), characterized in that: It includes two sets of connecting sleeves (10), which are connected to each other, and the two sets of connecting sleeves (10) are respectively fitted inside the outer walls of the two sets of rotating shafts (20); Both sets of connecting sleeves (10) are provided with reinforcing sleeves (30). The reinforcing sleeves (30) are located between the connecting sleeves (10) and the rotating shaft (20). The outer wall of the reinforcing sleeves (30) is fitted with positioning sleeves (40). The positioning sleeves (40) are coaxially arranged with the reinforcing sleeves (30). The positioning sleeves (40) are provided with positioning bolts that are connected to the connecting sleeves (10), so that the positioning sleeves (40) fix the reinforcing sleeves (30) between the connecting sleeves (10) and the rotating shaft (20).

2. The novel coupling according to claim 1, characterized in that: The reinforcing sleeve (30) includes two sets of first reinforcing half-rings (31) with the same structure, and a second reinforcing half-ring (32) is provided on the first reinforcing half-ring (31). The positioning sleeve (40) is provided with a first positioning ring (41) and a second positioning ring (43). The first positioning ring (41) is sleeved on the outer wall of the two sets of first reinforcing half rings (31), and the second positioning ring (43) is sleeved on the outer wall of the two second reinforcing half rings (32).

3. A novel coupling according to claim 2, characterized in that: Multiple sets of first reinforcing blocks (311) are evenly arranged between the two sets of first reinforcing semi-rings (31), and multiple sets of first reinforcing grooves (11) are evenly opened on the outer wall of the connecting sleeve (10). The multiple sets of first reinforcing grooves (11) are adapted to the multiple sets of first reinforcing blocks (311).

4. A novel coupling according to claim 3, characterized in that: Multiple sets of second reinforcing blocks (321) are evenly arranged between the two sets of second reinforcing semi-rings (32), and multiple sets of second reinforcing grooves (21) are evenly opened on the outer wall of the rotating shaft (20). The multiple sets of second reinforcing grooves (21) are adapted to the multiple sets of second reinforcing blocks (321).

5. A novel coupling according to claim 4, characterized in that: A reinforcing half-ring plate (33) is provided between the first reinforcing half-ring (31) and the second reinforcing half-ring (32), and a plurality of reinforcing holes (331) are uniformly provided on the reinforcing half-ring plate (33). Multiple sets of positioning holes (42) are evenly provided on the second positioning ring (43); Multiple sets of connecting holes (12) are evenly provided on the connecting sleeve (10); The positions and sizes of the multiple sets of reinforcing holes (331), multiple sets of positioning holes (42) and multiple sets of connecting holes (12) are matched, and the positioning bolts are set between the reinforcing holes (331), positioning holes (42) and connecting holes (12).

6. A novel coupling according to claim 1, characterized in that: The two sets of rotating shafts (20) are the output shaft of the drive motor and the input shaft of the gearbox, respectively.

7. A crane rotation drive device, characterized in that: The present invention includes a novel coupling as described in any one of claims 1-6.

Images