Spring supported vertical internal tooth coupling

Abstract

A spring supporting vertical inner tooth coupling relates to a coupling. The present application is to solve the problem that the existing coupling cannot be applied to support the coupling weight to the lower equipment in the vertical transmission occasion. The first inner tooth sleeve (1) is sleeved on the upper part of the outer tooth shaft (2), and the inner teeth of the first inner tooth sleeve (1) are engaged with the drum-shaped outer teeth (2-1) of the outer tooth shaft (2) to form a hinge point of the coupling, the fixed ring (4) is positioned between the first inner tooth sleeve (1) through the stop opening and is fixed with the screw (6); The through hole is opened in the circumferential direction of the fixed ring (4), and the spring (5) and the supporting pin (3) are installed in the through hole; The outer tooth (7) is connected with the spline outer tooth (2-2) of the outer tooth shaft (2), and the drum-shaped outer tooth on the outer tooth (7) is engaged with the outer tooth of the outer tooth shaft (2). The present application greatly reduces the swing resistance of the coupling when compensating deformation by using the rigidity of the spring. The present application is used in mechanical transmission.

Description

Technical Field

[0001] This invention relates to a coupling, specifically a spring-supported vertical internal gear coupling. It belongs to the field of mechanical transmission. Background Technology

[0002] Drum gear couplings are important components of mechanical transmission systems, used to transmit power and compensate for axial, angular, and radial misalignments between two shafts caused by installation errors, working deformation, thermal expansion, etc. They are widely used in various mechanical equipment in metallurgy, chemical industry, transportation, and other fields.

[0003] In vertical transmission applications, couplings are installed vertically in the shaft system. To ensure the vertical fixation of the coupling, the gear coupling section needs to be supported. This support must bear the weight of the coupling while not impeding the oscillation that occurs during coupling compensation. If a planar contact support is used, it will hinder the compensating movement of the coupling during operation, causing the connected equipment on both sides to bear greater reaction forces, which can easily lead to equipment damage and wear on the coupling teeth.

[0004] The conventional support method currently involves installing a concentric arc-shaped support at the bottom of the coupling, where the arc surface contacts the plane, providing support without affecting the coupling's compensating movement. This support structure cannot be used if the lower equipment cannot bear the weight of the coupling. For example, in a test bench where the equipment under test is installed at the bottom, the upper auxiliary equipment must bear the weight of the coupling to prevent external forces from affecting the test results. Alternatively, in some specially structured equipment, large vertical forces may cause malfunctions or shorten the equipment's lifespan.

[0005] In summary, existing couplings are unsuitable for vertical transmission applications where the weight of the coupling is supported on the lower equipment. Summary of the Invention

[0006] The purpose of this invention is to address the problem that existing couplings are unsuitable for supporting the weight of the coupling on lower equipment in vertical transmission applications. Therefore, this invention provides a spring-supported vertical internal gear coupling.

[0007] The technical solution of the present invention is as follows: A spring-supported vertical internal gear coupling includes a first internal gear sleeve, an external gear shaft, a support pin, a fixing ring, a spring, a screw, external teeth, and a second internal gear sleeve. The first internal gear sleeve is fitted onto the upper part of the external gear shaft, and the internal teeth of the first internal gear sleeve mesh with the drum-shaped external teeth of the external gear shaft to form a hinge point of the coupling. The fixing ring is positioned with the first internal gear sleeve by a stop and fixed with a screw. A through hole is opened in the circumferential direction of the fixing ring, and the spring and the support pin are installed in the through hole. The internal spline on the external teeth is connected to the spline external teeth of the external gear shaft, and the drum-shaped external teeth on the external teeth mesh with the internal teeth of the second internal gear sleeve to form another hinge point of the coupling.

[0008] Furthermore, the first internal gear sleeve has a first stepped hole and a first through hole, which are coaxially connected.

[0009] Furthermore, the upper part of the first stepped hole is machined with a first internal tooth, and the lower part of the first stepped hole is machined with a smooth hole.

[0010] Furthermore, the upper part of the external gear shaft is machined with drum-shaped external teeth, and the lower part of the external gear shaft is machined with spline external teeth.

[0011] Furthermore, a second stepped hole is provided on the fixing ring in the circumferential direction, wherein the upper hole diameter of the stepped hole is smaller than the lower hole diameter.

[0012] Furthermore, a limiting shoulder is machined in the middle of the support pin, the upper part of the support pin passes through the upper hole on the fixing ring, the limiting shoulder is located in the lower hole on the fixing ring, and the spring is fitted on the support pin located in the lower hole.

[0013] Furthermore, the inner hole of the external gear is machined with a first spline internal tooth, which meshes with the spline external tooth of the external gear shaft.

[0014] Furthermore, the outer circumference of the external teeth is machined with drum-shaped external teeth.

[0015] Furthermore, the second internal gear sleeve is machined with drum-shaped internal teeth.

[0016] Preferably, the height of the drum-shaped outer teeth is less than the height of the first inner teeth of the first inner tooth sleeve.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] 1. This invention is installed in a vertically mounted gear coupling system. When the lower equipment is not suitable to bear the weight of the coupling, this invention can be suspended on the upper equipment without affecting the coupling's compensation function.

[0019] 2. Under the elastic force of the spring 5, the support pin 3 of the present invention lifts the external gear shaft 2. When the external gear shaft 2 swings, it only needs to overcome the elastic force of the spring 5, thus avoiding the disadvantage of inflexible swinging when supported by a rigid planar surface. The weight of the external gear shaft is transmitted to the upper equipment through the support pin, spring, and first inner gear sleeve 1, thereby avoiding the weight of the coupling being applied to the lower equipment. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the spring-supported vertical drum-shaped gear coupling of the present invention. Detailed Implementation

[0021] Specific implementation method one: Combining Figure 1This embodiment describes a spring-supported vertical internal gear coupling, comprising a first internal gear sleeve 1, an external gear shaft 2, a support pin 3, a retaining ring 4, a spring 5, a screw 6, an external gear 7, and a second internal gear sleeve 8.

[0022] The first internal gear sleeve 1 is fitted onto the upper part of the external gear shaft 2, and the internal teeth of the first internal gear sleeve 1 mesh with the drum-shaped external teeth 2-1 of the external gear shaft 2 to form a hinge point of the coupling. The fixing ring 4 is positioned with the first internal gear sleeve 1 by a stop and fixed with screws 6. A through hole is opened in the circumferential direction of the fixing ring 4, and the spring 5 and the support pin 3 are installed in the through hole. The external teeth 7 are connected to the spline external teeth 2-2 of the external gear shaft 2, and the drum-shaped external teeth on the external teeth 7 mesh with the internal teeth of the second internal gear sleeve 8 to form another hinge point of the coupling.

[0023] In this embodiment, the upper part of the first inner gear sleeve 1 has multiple first connecting holes 1-3 machined in the circumferential direction. The first inner gear sleeve 1 is connected to the upper device by bolts passing through the first connecting holes 1-3. This connection method is simple, reliable, and easy to assemble and disassemble.

[0024] In this embodiment, the support pin lifts the external gear shaft under the elastic force of the spring. When the external gear shaft swings, it only needs to overcome the elastic force of the spring, avoiding the disadvantage of inflexible swinging when using a rigid planar support. At the same time, the weight of the external gear shaft is transferred to the upper equipment through the spring, thereby avoiding the weight of the coupling being applied to the lower equipment.

[0025] In practical use, the external gear of the coupling is either a drum-shaped gear or a straight gear, while the internal gear is a straight gear. The internal and external gears can be used in conjunction with tooth tip positioning or tooth side positioning. A retaining ring secures the spring and support pin to the upper internal gear sleeve of the coupling. The weight of the external gear shaft is transferred to the upper internal gear sleeve via the retaining pin and spring. The external gear shaft and external gear are connected by a spline and axially secured with a round nut, ensuring that the external gear shaft can smoothly pass through the inner hole of the first internal gear sleeve during installation.

[0026] Vertically mounted gear couplings typically require supporting their weight on the lower equipment. If the weight needs to be suspended from the upper equipment, a planar support method is generally used, which hinders the coupling's compensating movement. This invention uses spring supports to suspend the weight of the gear coupling from the upper equipment, significantly reducing the swaying resistance during coupling deformation compensation by utilizing the spring stiffness. This solves the support problem for vertical gear couplings when the lower equipment cannot bear the coupling's weight.

[0027] Specific Implementation Method Two: Combining Figure 1In this embodiment, the first internal gear sleeve 1 has a first stepped hole and a first through hole 1-3, which are coaxially aligned and connected. This arrangement facilitates connection with the external gear shaft 2, support pin 3, fixing ring 4, and spring 5 without interference. Other components and connections are the same as in specific embodiment one.

[0028] The first through hole 1-3 is used for the main body of the external gear shaft 2 to pass through. Among them, the first stepped hole refers to the first internal tooth 1-1 and the smooth hole 1-2.

[0029] Specific implementation method three: Combining Figure 1 In this embodiment, the upper part of the first stepped hole is machined with a first internal tooth 1-1, and the lower part of the first stepped hole is machined with a smooth hole 1-2. This arrangement ensures that the diameter of the smooth hole 1-2 is larger than the inner diameter of the tooth root of the first internal tooth 1-1. Other components and connections are the same as in specific embodiments one or two.

[0030] Specific implementation method four: Combination Figure 1 In this embodiment, the upper part of the external gear shaft 2 is machined with drum-shaped external teeth 2-1, and the lower part of the external gear shaft 2 is machined with splined external teeth 2-2. This arrangement facilitates connection with the first internal gear sleeve 1 and the external teeth 7. Other components and connection relationships are the same as in specific embodiments one, two, or three.

[0031] In this embodiment, the external gear shaft 2 is a T-shaped gear shaft. The horizontal section of the external gear shaft 2 has drum-shaped external teeth 2-1. The vertical section of the external gear shaft 2 facilitates the installation of the first internal gear sleeve 1, the support pin 3, the retaining ring 4, the spring 5, and the screw 6. Simultaneously, the outer diameter of the spline external teeth 2-2 is smaller than the outer diameter of the vertical section of the external gear shaft 2, ensuring that the spline external teeth 2-2 do not collide during installation.

[0032] Specific Implementation Method Five: Combining Figure 1 In this embodiment, the fixing ring 4 has a second stepped hole 4-1 in the circumferential direction, and the upper hole diameter of the stepped hole is smaller than the lower hole diameter. This arrangement facilitates the installation of the spring and also allows for compensation in the radial direction. Other components and connections are the same as in specific embodiments one, two, three, or four.

[0033] Specific Implementation Method Six: Combination Figure 1 In this embodiment, a limiting shoulder 3-1 is machined in the middle of the support pin 3. The upper part of the support pin 3 passes through the upper hole on the fixing ring 4, and the limiting shoulder 3-1 is located in the lower hole on the fixing ring 4. The spring 5 is fitted onto the support pin 3 located in the lower hole. With this configuration, the upper end of the limiting shoulder 3-1 rests on the lower end face of the horizontal section of the external gear shaft 2. Other components and connections are the same as in specific embodiments one, two, three, four, or five.

[0034] In this embodiment, the top of the support pin 3 moves vertically up and down against the external gear shaft under the action of the spring.

[0035] Specific implementation method seven: Combination Figure 1 In this embodiment, the inner hole of the external gear 7 is machined with a first spline internal tooth 7-1, which meshes with the spline external tooth 2-2 of the external gear shaft 2. This configuration makes the connection more reliable and ensures precise power transmission. Other components and connection relationships are the same as in specific embodiments one, two, three, four, five, or six.

[0036] Specific implementation method eight: Combination Figure 1 In this embodiment, the outer circumference of the external gear 7 is machined with drum-shaped external teeth 7-2. This configuration allows the coupling to have a stronger load-bearing capacity and a larger compensation angle. Other components and connections are the same as in specific embodiments one, two, three, four, five, six, or seven.

[0037] In this embodiment, the height of the drum-shaped external tooth 7-2 is less than the height of the internal tooth 8-1 of the second internal tooth sleeve 8, which facilitates compensation in the axial direction of the external tooth shaft.

[0038] Specific Implementation Method Nine: Combining Figure 1 In this embodiment, the second internal gear sleeve 8 is machined with drum-shaped internal teeth 8-1. This arrangement facilitates meshing with drum-shaped external teeth 7-2. Other components and connections are the same as in any of the specific embodiments one to eight.

[0039] Specific Implementation Method Ten: Combining Figure 1 In this embodiment, the height of the drum-shaped external tooth 2-1 is less than the height of the first internal tooth 1-1 of the first internal tooth sleeve 1. This arrangement facilitates compensation along the axial direction of the external tooth shaft. Other components and connections are the same as in any of the specific embodiments one through nine.

[0040] Combination Figure 1 Explanation of the working principle of this invention:

[0041] The coupling mainly consists of a first internal gear sleeve 1, an external gear shaft 2, a support pin 3, a retaining ring 4, a spring 5, a screw 6, external teeth 7, and a second internal gear sleeve 8. The internal teeth of the first internal gear sleeve 1 engage with the drum-shaped external teeth on the external gear shaft 2 to form the coupling hinge point. The retaining ring 4 is positioned with the external gear sleeve 1 by a stop and fixed with the screw 6. A through hole with a larger lower diameter and a smaller upper diameter is opened in the circumferential direction of the retaining ring 4. The spring 5 is installed in the lower large hole, and the support pin 3 is installed in the upper small hole. The external teeth 7 are connected to the external gear shaft 2 by a spline and are axially positioned by a round nut. The drum-shaped external teeth on the external teeth 7 engage with the internal teeth of the second internal gear sleeve 8 by tooth tip positioning or tooth side positioning, thereby transmitting torque and compensating for misalignment.

[0042] The spring and support pin are fixed to the inner gear sleeve on the upper side of the coupling by a retaining ring. The weight of the outer gear shaft is transferred to the upper inner gear sleeve through the retaining pin and spring, and then to the upper equipment. The spring stiffness is calculated based on the weight of the coupling to determine parameters such as spring diameter and quantity, ensuring that the spring force is sufficient to support the weight.

[0043] While the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the invention. Those skilled in the art can make other changes within the spirit of the invention and apply it to fields not mentioned in the invention. Of course, all such changes made in accordance with the spirit of the invention should be included within the scope of protection claimed by the invention.

Claims

1. A spring-supported vertical internal gear coupling, characterized in that: It includes a first inner gear sleeve (1), an outer gear shaft (2), a support pin (3), a retaining ring (4), a spring (5), a screw (6), an outer tooth (7), and a second inner gear sleeve (8). The first internal gear sleeve (1) is fitted onto the upper part of the external gear shaft (2), and the internal teeth of the first internal gear sleeve (1) mesh with the drum-shaped external teeth (2-1) of the external gear shaft (2) to form a hinge point of the coupling. The fixing ring (4) is positioned with the first internal gear sleeve (1) by a stop and fixed with screws (6). A through hole is provided in the circumferential direction of the fixing ring (4), and the spring (5) and the support pin (3) are installed in the through hole. The external teeth (7) are connected to the spline external teeth (2-2) of the external gear shaft (2), and the drum-shaped external teeth on the external teeth (7) mesh with the internal teeth of the second internal gear sleeve (8) to form another hinge point of the coupling. A limiting shoulder (3-1) is machined in the middle of the support pin (3). The upper part of the support pin (3) passes through the upper hole on the fixing ring (4). The limiting shoulder (3-1) is located in the lower hole on the fixing ring (4). The spring (5) is fitted on the support pin (3) located in the lower hole.

2. The spring-supported vertical internal gear coupling according to claim 1, characterized in that: The first internal gear sleeve (1) has a first stepped hole and a first through hole (1-3) inside, and the first stepped hole and the first through hole (1-3) are coaxially connected.

3. A spring-supported vertical internal gear coupling according to claim 1 or 2, characterized in that: The upper part of the first stepped hole is machined with the first internal tooth (1-1), and the lower part of the first stepped hole is machined with the smooth hole (1-2).

4. A spring-supported vertical internal gear coupling according to claim 3, characterized in that: The upper part of the external gear shaft (2) is machined with drum-shaped external teeth (2-1), and the lower part of the external gear shaft (2) is machined with spline external teeth (2-2).

5. A spring-supported vertical internal gear coupling according to claim 4, characterized in that: A second stepped hole (4-1) is provided on the fixed ring (4) in the circumferential direction, wherein the upper hole diameter of the stepped hole is smaller than the lower hole diameter.

6. A spring-supported vertical internal gear coupling according to claim 5, characterized in that: The inner hole of the external tooth (7) is machined with a first spline internal tooth (7-1), which meshes with the spline external tooth (2-2) of the external tooth shaft (2).

7. A spring-supported vertical internal gear coupling according to claim 6, characterized in that: The outer circumference of the external tooth (7) is machined with a drum-shaped external tooth (7-2).

8. A spring-supported vertical internal gear coupling according to claim 7, characterized in that: The second internal gear sleeve (8) is machined with drum-shaped internal teeth (8-1).

9. A spring-supported vertical internal gear coupling according to claim 8, characterized in that: The height of the drum-shaped external tooth (2-1) is less than the height of the first internal tooth (1-1) of the first internal tooth sleeve (1).

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