Parallel-shaft reduction motor

Abstract

The present application relates to the technical field of motor, in particular to a parallel shaft reduction motor, comprising a shell, a motor body and an output mechanism; the shell is internally provided with a containing cavity; the output mechanism comprises a shaft coupling rotatably arranged at the top of the shell, a transmission ring movably arranged in the containing cavity, a buffer spring arranged between the bottom of the transmission ring and the containing cavity, and an adjusting assembly arranged in the containing cavity; the containing cavity is internally provided with a transmission assembly. The motor body and the output mechanism are arranged at both ends of the shell, the transmission assembly, the buffer spring, the transmission ring and the adjusting assembly are integrated in the containing cavity, the buffer spring is matched with the axially movable transmission ring, the transmission ring compresses the buffer spring to absorb impact energy when the load impact, thereby prolonging the service life of the whole machine; in addition, the transmission ring is driven by the axial displacement of the load torque, the transmission ratio of the linkage adjusting assembly is automatically changed, the small transmission ratio is maintained to reduce energy waste under light load, the large transmission ratio is switched to improve the output torque under heavy load, and various working conditions are adapted.

Description

Technical Field

[0001] This invention relates to the field of motor technology, and specifically to a parallel shaft geared motor. Background Technology

[0002] Parallel shaft geared motors are core power conversion devices in the industrial transmission field. They rely on gear transmission mechanisms to achieve speed reduction and torque increase, and are widely used in automated production lines, logistics conveying equipment, engineering machinery and precision transmission equipment.

[0003] Existing conventional parallel shaft geared motors generally adopt a gear transmission structure with a fixed transmission ratio. The output speed and output torque of the whole machine remain constant after the parameters are determined, and cannot be dynamically adjusted according to the load changes during actual operation. However, in actual working conditions, geared motors often face various operating states such as no-load start, steady-state light load, rated full load, and instantaneous impact load. When the load is small, the high transmission ratio will cause speed redundancy and energy waste, increasing operating energy consumption. When the load suddenly increases or is subjected to impact load, the fixed transmission ratio cannot automatically amplify the output torque, which can easily lead to motor overload and heat generation, and a sudden increase in impact stress on the transmission gears. Long-term operation will aggravate the wear of core transmission components such as gear teeth and bearings, and in severe cases, even cause failures such as broken teeth and shaft deformation, significantly reducing the operating stability and service life of the geared motor. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned shortcomings in the prior art by providing a parallel shaft geared motor.

[0005] The objective of this invention is achieved through the following technical solution: a parallel shaft geared motor, comprising a housing, a motor body, and an output mechanism; the motor body and the output mechanism are respectively disposed at both ends of the housing;

[0006] The housing has a receiving cavity; the output mechanism includes a coupling rotatably disposed on the top of the housing, a transmission ring movably disposed in the receiving cavity, a buffer spring disposed between the bottom of the transmission ring and the receiving cavity, and an adjustment assembly disposed in the receiving cavity; the transmission ring is used to drive the coupling to rotate;

[0007] The accommodating cavity is equipped with a transmission component; the motor body drives the transmission ring to rotate through the transmission component and the adjustment component.

[0008] The present invention is further configured such that the axis of the motor body is parallel to the axis of the coupling.

[0009] The present invention is further configured such that the transmission assembly includes a drive gear rotatably disposed in the accommodating cavity, a driven gear rotatably disposed in the accommodating cavity, and a synchronous belt disposed between the drive gear and the driven gear; the drive gear is connected to the output end of the motor body.

[0010] The present invention is further configured such that a relief groove is provided through the middle of the driven gear; the transmission ring is movably disposed within the relief groove;

[0011] The adjustment assembly includes an adjustment seat that slides horizontally in the accommodating cavity, a lower bevel gear that rotates on the adjustment seat, an upper bevel gear that drives the lower bevel gear coaxially, and a first bevel gear fixed at the bottom of the transmission ring; the upper bevel gear is used to mesh with the first bevel gear.

[0012] The axes of the upper bevel gear, the lower bevel gear, the first bevel gear, the transmission ring, and the coupling are arranged in parallel.

[0013] The present invention is further configured such that the accommodating cavity is provided with a sliding groove extending in a horizontal direction; the adjusting seat is slidably disposed in the sliding groove; and a retaining spring is provided between the adjusting seat and the sliding groove.

[0014] The present invention is further configured such that the adjusting assembly includes an adjusting screw rotatably disposed in the accommodating cavity and a second bevel gear fixedly disposed at one end of the adjusting screw; the adjusting screw extends horizontally; the inner wall of the clearance groove is provided with a bevel gear ring; the bevel gear ring meshes with the second bevel gear.

[0015] The adjusting seat passes through the adjusting screw; the adjusting seat is rotatably equipped with a third bevel gear; the third bevel gear is slidably sleeved on the adjusting screw; the third bevel gear meshes with the lower bevel gear.

[0016] The present invention is further configured such that the transmission ring, buffer spring, upper bevel gear, lower bevel gear, adjusting seat, abutment spring, adjusting screw, second bevel gear and third bevel gear are all disposed in the clearance groove;

[0017] The second bevel gear, the adjusting screw, and the third bevel gear are coaxially arranged;

[0018] The bottom of the buffer spring is connected to the outer shell; the top of the buffer spring abuts against the bottom of the transmission ring.

[0019] The present invention is further configured such that: a positioning post is fixedly provided in the accommodating cavity; a transmission sleeve is fixedly provided at the bottom of the coupling; the transmission sleeve is rotatably sleeved outside the positioning post; and the transmission ring is movably sleeved outside the transmission sleeve.

[0020] The present invention is further configured such that the transmission ring is provided with a driving pin; the transmission sleeve is provided with a driving groove; and the driving pin is movably disposed in the driving groove.

[0021] The present invention is further configured such that the driving groove includes a first driving spiral groove and a second driving spiral groove; the rotation direction of the first driving spiral groove is opposite to that of the second driving spiral groove; and the top of the first driving spiral groove is connected to the top of the second driving spiral groove.

[0022] The beneficial effects of this invention are as follows: By placing the motor body and the output mechanism at opposite ends of the housing, the invention integrates a transmission component, a buffer spring, a transmission ring, and an adjustment component within the housing cavity. The buffer spring, in conjunction with the axially movable transmission ring, allows the transmission ring to compress the buffer spring and absorb impact energy during load impacts, thus extending the overall service life of the machine. Furthermore, the transmission ring is driven to move axially by the load torque, and the linkage adjustment component automatically changes the transmission ratio. Under light loads, a small transmission ratio is maintained to reduce energy waste, while under heavy loads, a large transmission ratio is switched to increase the output torque, adapting to various working conditions. Attached Figure Description

[0023] The invention will be further illustrated with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the invention. For those skilled in the art, other drawings can be obtained based on the following drawings without any creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of the present invention;

[0025] Figure 2 This is a diagram of the internal structure of the present invention;

[0026] Figure 3 This is a cross-sectional view of the present invention;

[0027] Figure 4 yes Figure 3 A magnified view of part A in the middle;

[0028] Figure 5 This is a cross-sectional view of the concealed positioning column of the present invention;

[0029] Figure 6 yes Figure 5 A magnified view of part B in the middle;

[0030] The components are as follows: 1. Housing; 11. Motor body; 12. Drive gear; 13. Synchronous belt; 2. Receiving cavity; 21. Sliding groove; 22. Positioning pin; 3. Coupling; 4. Transmission ring; 41. Buffer spring; 42. First bevel gear; 43. Drive pin; 5. Driven gear; 51. Relief groove; 52. Bevel gear ring; 6. Adjusting seat; 61. Lower bevel gear; 62. Upper bevel gear; 63. Abutment spring; 64. Third bevel gear; 7. Adjusting screw; 71. Second bevel gear; 8. Transmission sleeve; 81. First drive spiral groove; 82. Second drive spiral groove. Detailed Implementation

[0031] The present invention will be further described in conjunction with the following embodiments.

[0032] Depend on Figures 1 to 6 As can be seen, the parallel shaft geared motor described in this embodiment includes a housing 1, a motor body 11, and an output mechanism; the motor body 11 and the output mechanism are respectively located at both ends of the housing 1.

[0033] The outer casing 1 is provided with a receiving cavity 2; the output mechanism includes a coupling 3 rotatably disposed on the top of the outer casing 1, a transmission ring 4 movably disposed in the receiving cavity 2, a buffer spring 41 disposed between the bottom of the transmission ring 4 and the receiving cavity 2, and an adjustment assembly disposed in the receiving cavity 2; the transmission ring 4 is used to drive the coupling 3 to rotate.

[0034] The accommodating cavity 2 is equipped with a transmission assembly; the motor body 11 drives the transmission ring 4 to rotate through the transmission assembly and the adjustment assembly.

[0035] Specifically, in this embodiment, the parallel shaft geared motor outputs power from the output end of the motor body 11 and enters the accommodating cavity 2 of the housing 1. It first completes a single-stage transmission via the transmission assembly, and then the power is transmitted to the transmission ring 4 via the adjustment assembly. Finally, the transmission ring 4 drives the coupling 3 to output torque outward. During operation, the buffer spring 41 always provides axial elastic support to the transmission ring 4. When the coupling 3 encounters an instantaneous impact load, the transmission ring 4 can compress the buffer spring 41 axially, converting the impact kinetic energy into elastic potential energy for absorption and release, thus reducing damage to the internal transmission components. Furthermore, the transmission ring 4 is driven axially by the load torque, and the linkage adjustment assembly automatically changes the transmission ratio. Under light loads, it maintains a small transmission ratio to reduce energy waste, while under heavy loads, it switches to a large transmission ratio to increase output torque, adapting to various working conditions. Moreover, this embodiment adopts a layout where the power input and output are located at opposite ends of the housing 1, ensuring the structural characteristics of the parallel shaft transmission while facilitating the partitioned assembly and subsequent maintenance of the internal transmission. The overall structure is neat and space utilization is high.

[0036] The parallel shaft geared motor described in this embodiment has its motor body 11 with its axis parallel to the axis of the coupling 3. This arrangement effectively compresses the overall radial dimension, making it suitable for narrow installation spaces.

[0037] This embodiment describes a parallel shaft geared motor. The transmission assembly includes a drive gear 12 rotatably disposed in a receiving cavity 2, a driven gear 5 rotatably disposed in the receiving cavity 2, and a synchronous belt 13 disposed between the drive gear 12 and the driven gear 5. The drive gear 12 is connected to the output end of the motor body 11. Specifically, after the motor body 11 is powered on and started, its output end drives the drive gear 12 to rotate synchronously. The drive gear 12 drives the driven gear 5 to rotate through the synchronous belt 13, completing the overall first-stage reduction and torque increase.

[0038] In this embodiment of the parallel shaft reduction motor, the driven gear 5 has a relief groove 51 extending through its middle; the transmission ring 4 is movably disposed within the relief groove 51.

[0039] The adjustment assembly includes an adjustment seat 6 that slides horizontally in the accommodating cavity 2, a lower bevel gear 61 that rotates on the adjustment seat 6, an upper bevel gear 62 that drives the lower bevel gear 61 coaxially, and a first bevel gear 42 that is fixedly disposed at the bottom of the transmission ring 4; the upper bevel gear 62 is used to mesh with the first bevel gear 42.

[0040] The axes of the upper bevel gear 62, the lower bevel gear 61, the first bevel gear 42, the transmission ring 4, and the coupling 3 are arranged in parallel.

[0041] Specifically, in this embodiment, the driven gear 5 rotates around its own axis during operation of the parallel shaft reduction motor. Power is transmitted to the transmission ring 4 through the adjustment component in the clearance groove 51, realizing the secondary transmission of power from the driven gear 5 to the coupling 3. The upper bevel gear 62 and the first bevel gear 42 maintain an end-face meshing state with their axes parallel. When the transmission ring 4 drives the first bevel gear 42 to move up and down along the axial direction, the meshing radius of the first bevel gear 42 changes, pushing the upper bevel gear 62 and the adjustment seat 6 to slide adaptively in the horizontal direction. Without interrupting the power transmission, the transmission ratio between the two is continuously changed. In addition, in this embodiment, the transmission ring 4 and the adjustment component are integrated inside the clearance groove 51 of the driven gear 5, making full use of the internal space of the driven gear 5.

[0042] In this embodiment, a parallel shaft geared motor is provided, wherein the accommodating cavity 2 is provided with a sliding groove 21 extending in the horizontal direction; the adjusting seat 6 is slidably disposed in the sliding groove 21; and a retaining spring 63 is provided between the adjusting seat 6 and the sliding groove 21.

[0043] Specifically, in the parallel shaft geared motor described in this embodiment, during operation, the spring 63 always applies an elastic thrust toward the transmission sleeve 8 to the adjusting seat 6, so that the tooth surface of the upper bevel gear 62 is always in close contact with the tooth surface of the first bevel gear 42, ensuring that the two maintain reliable meshing throughout the entire process of meshing radius change, and avoiding tooth disengagement and tooth breakage failures.

[0044] When the load increases and the first bevel gear 42 moves down with the transmission ring 4, the tooth surface of the first bevel gear 42 with a larger radius gradually engages in meshing, pushing the upper bevel gear 62 and the adjusting seat 6 to slide smoothly away from the transmission sleeve 8 along the sliding groove 21, and simultaneously compressing the spring 63 to store elastic potential energy.

[0045] When the load decreases and the first bevel gear 42 moves upward with the transmission ring 4, the spring 63 releases its elastic force to push the adjusting seat 6 to reset inward along the sliding groove 21, thereby driving the upper bevel gear 62 back to the small radius meshing position.

[0046] The parallel shaft geared motor described in this embodiment includes an adjustment assembly that further comprises an adjustment screw 7 rotatably disposed in the accommodating cavity 2 and a second bevel gear 71 fixedly disposed at one end of the adjustment screw 7; the adjustment screw 7 extends horizontally; the inner wall of the clearance groove 51 is provided with a bevel gear ring 52; the bevel gear ring 52 meshes with the second bevel gear 71;

[0047] The adjusting seat 6 passes through the adjusting screw 7; the adjusting seat 6 is rotatably provided with a third bevel gear 64; the third bevel gear 64 is slidably sleeved on the adjusting screw 7; the third bevel gear 64 meshes with the lower bevel gear 61.

[0048] Specifically, in the parallel shaft reduction motor described in this embodiment, when the driven gear 5 rotates, the bevel gear ring 52 on the inner wall of its clearance groove 51 rotates synchronously with the driven gear 5, driving the second bevel gear 71 to rotate around its own axis through tooth surface meshing. The second bevel gear 71 then drives the adjusting screw 7 to rotate synchronously. When the adjusting screw 7 rotates, it drives the third bevel gear 64 sleeved on it to rotate synchronously through circumferential engagement. The third bevel gear 64 drives the lower bevel gear 61 to rotate through meshing transmission. Finally, the lower bevel gear 61 coaxially drives the upper bevel gear 62 to rotate, transmitting power to the first bevel gear 42. In addition, the third bevel gear 64 is slidably sleeved on the outside of the adjusting screw 7 and can slide horizontally along the axial direction of the adjusting screw 7 together with the adjusting seat 6. During the movement of the adjusting seat 6, it always maintains circumferential transmission connection with the adjusting screw 7 and always maintains meshing with the lower bevel gear 61, so as to achieve uninterrupted power transmission during the dynamic adjustment of the transmission ratio.

[0049] In this embodiment of the parallel shaft geared motor, the transmission ring 4, buffer spring 41, upper bevel gear 62, lower bevel gear 61, adjusting seat 6, abutment spring 63, adjusting screw 7, second bevel gear 71 and third bevel gear 64 are all disposed in the relief groove 51.

[0050] The second bevel gear 71, the adjusting screw 7, and the third bevel gear 64 are arranged coaxially;

[0051] The bottom of the buffer spring 41 is connected to the outer casing 1; the top of the buffer spring 41 abuts against the bottom of the transmission ring 4.

[0052] Specifically, in the parallel shaft geared motor described in this embodiment, the transmission ring 4, buffer spring 41, upper bevel gear 62, lower bevel gear 61, adjusting seat 6, abutment spring 63, adjusting screw 7, second bevel gear 71, and third bevel gear 64 all operate independently within the clearance groove 51 inside the driven gear 5, without occupying additional space in the accommodating cavity 2. In addition, the second bevel gear 71, adjusting screw 7, and third bevel gear 64 are arranged coaxially, ensuring the coaxiality of the transmission chain, reducing transmission eccentricity and uneven wear of parts, and improving transmission efficiency and component life. Furthermore, the buffer spring 41 abuts against the bottom of the transmission ring 4 axially, and is stably compressed when the load increases and the transmission ring 4 moves downward, converting the impact load into stored elastic potential energy. When the load decreases, the elastic potential energy is released to push the transmission ring 4 to reset, while continuously absorbing axial vibration during operation, weakening the impact of load fluctuations on the motor body 11, and improving the overall operating stability and service life of the machine.

[0053] In this embodiment, a parallel shaft geared motor is provided with a positioning post 22 fixedly installed in the accommodating cavity 2; a transmission sleeve 8 is fixedly installed at the bottom of the coupling 3; the transmission sleeve 8 is rotatably sleeved on the outside of the positioning post 22; and the transmission ring 4 is movably sleeved on the outside of the transmission sleeve 8.

[0054] Specifically, the positioning pin 22 is fixed inside the accommodating cavity 2, providing stable radial support and rotation center positioning for the transmission sleeve 8, ensuring that the coupling 3 and the transmission sleeve 8 always rotate stably around the positioning pin 22, avoiding radial wobble and jump of the coupling 3, and improving the stability of the output torque; in addition, the transmission ring 4 can slide freely along the outer wall of the transmission sleeve 8, and transmit rotational torque through the circumferential mating structure, which not only retains the freedom of the transmission ring 4 to adjust the transmission ratio by axial displacement, but also ensures that the power can be reliably transmitted from the transmission ring 4 to the transmission sleeve 8 and the coupling 3.

[0055] In this embodiment, a parallel shaft geared motor is provided with a drive pin 43 in the transmission ring 4; a drive groove is provided in the transmission sleeve 8; and the drive pin 43 is movably disposed in the drive groove.

[0056] Specifically, when the transmission ring 4 rotates, the side wall of the drive pin 43 abuts against the side wall of the drive groove, and the circumferential contact force drives the transmission sleeve 8 and the coupling 3 to rotate synchronously, realizing the output of torque. When the load at the output end of the coupling 3 increases, the reverse resistance torque on the transmission sleeve 8 increases synchronously, and the drive pin 43 and the inclined surface of the drive groove generate an axial component force, which overcomes the elastic force of the buffer spring 41 and pushes the transmission ring 4 to slide downward along the axial direction of the transmission sleeve 8, directly converting the change in load torque into the axial displacement of the transmission ring 4, providing mechanical driving force for transmission ratio adjustment.

[0057] The parallel shaft geared motor described in this embodiment includes a drive groove comprising a first drive spiral groove 81 and a second drive spiral groove 82; the rotation direction of the first drive spiral groove 81 is opposite to that of the second drive spiral groove 82; the top of the first drive spiral groove 81 is connected to the top of the second drive spiral groove 82.

[0058] Specifically, when the motor body 11 rotates in the forward direction and the load increases, the drive pin 43 slides downward along the helical slope of the first drive helical groove 81, driving the transmission ring 4 to move axially downward in a stable manner; when the motor body 11 rotates in the reverse direction and the load increases, the drive pin 43 slides downward along the helical slope of the second drive helical groove 82 with the opposite rotation direction, similarly driving the transmission ring 4 to generate a downward axial displacement; this embodiment, through the above settings, ensures that regardless of whether the motor body 11 rotates in the forward or reverse direction, the transmission ring 4 can be driven to generate the same downward displacement when the load increases, ensuring that the motor body 11 can stably trigger the large transmission ratio torque increase mode under both forward and reverse operating conditions, realizing bidirectional load adaptive speed regulation.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A parallel shaft geared motor, characterized in that: It includes a housing (1), a motor body (11), and an output mechanism; the motor body (11) and the output mechanism are respectively located at both ends of the housing (1); The housing (1) is provided with a receiving cavity (2); the output mechanism includes a coupling (3) rotatably disposed on the top of the housing (1), a transmission ring (4) movably disposed in the receiving cavity (2), a buffer spring (41) disposed between the bottom of the transmission ring (4) and the receiving cavity (2), and an adjustment assembly disposed in the receiving cavity (2); the transmission ring (4) is used to drive the coupling (3) to rotate; The cavity (2) is provided with a transmission assembly; the motor body (11) drives the transmission ring (4) to rotate through the transmission assembly and the adjustment assembly; The accommodating cavity (2) is fixedly provided with a positioning post (22); the bottom of the coupling (3) is fixedly provided with a transmission sleeve (8); the transmission sleeve (8) is rotatably sleeved outside the positioning post (22); the transmission ring (4) is movably sleeved outside the transmission sleeve (8); The transmission ring (4) is provided with a drive pin (43); the transmission sleeve (8) is provided with a drive groove; the drive pin (43) is movably disposed in the drive groove; The drive groove includes a first drive spiral groove (81) and a second drive spiral groove (82); the spiral direction of the first drive spiral groove (81) is opposite to that of the second drive spiral groove (82); the top of the first drive spiral groove (81) is connected to the top of the second drive spiral groove (82).

2. The parallel shaft geared motor according to claim 1, characterized in that: The axis of the motor body (11) is set parallel to the axis of the coupling (3).

3. A parallel shaft geared motor according to claim 1, characterized in that: The transmission assembly includes a drive gear (12) rotatably disposed in the accommodating cavity (2), a driven gear (5) rotatably disposed in the accommodating cavity (2), and a synchronous belt (13) disposed between the drive gear (12) and the driven gear (5); the drive gear (12) is connected to the output end of the motor body (11).

4. A parallel shaft geared motor according to claim 3, characterized in that: The driven gear (5) has a relief groove (51) running through its middle; the transmission ring (4) is movably disposed within the relief groove (51); The adjustment assembly includes an adjustment seat (6) that slides horizontally in the accommodating cavity (2), a lower bevel gear (61) that rotates on the adjustment seat (6), an upper bevel gear (62) that drives the lower bevel gear (61) coaxially, and a first bevel gear (42) that is fixed at the bottom of the transmission ring (4); the upper bevel gear (62) is used to mesh with the first bevel gear (42); The upper bevel gear (62) and the lower bevel gear (61) are coaxially arranged; The first bevel gear (42), the transmission ring (4), and the coupling (3) are coaxially arranged; The axis of the upper bevel gear (62) is parallel to the axis of the first bevel gear (42).

5. A parallel shaft geared motor according to claim 4, characterized in that: The accommodating cavity (2) is provided with a sliding groove (21) extending in the horizontal direction; the adjusting seat (6) is slidably disposed in the sliding groove (21); and a retaining spring (63) is provided between the adjusting seat (6) and the sliding groove (21).

6. A parallel shaft geared motor according to claim 5, characterized in that: The adjustment assembly also includes an adjustment screw (7) rotatably disposed in the accommodating cavity (2) and a second bevel gear (71) fixedly disposed at one end of the adjustment screw (7); the adjustment screw (7) extends horizontally; the inner wall of the relief groove (51) is provided with a bevel gear ring (52); the bevel gear ring (52) meshes with the second bevel gear (71); The adjusting seat (6) passes through the adjusting screw (7); the adjusting seat (6) is rotatably provided with a third bevel gear (64); the third bevel gear (64) is slidably sleeved on the adjusting screw (7); the third bevel gear (64) meshes with the lower bevel gear (61).

7. A parallel shaft geared motor according to claim 6, characterized in that: The transmission ring (4), buffer spring (41), upper bevel gear (62), lower bevel gear (61), adjusting seat (6), abutment spring (63), adjusting screw (7), second bevel gear (71) and third bevel gear (64) are all located in the relief groove (51); The second bevel gear (71), the adjusting screw (7), and the third bevel gear (64) are coaxially arranged; The bottom of the buffer spring (41) is connected to the outer shell (1); the top of the buffer spring (41) abuts against the bottom of the transmission ring (4).

Images