Emergency clutch device for speed reducer

Abstract

The utility model relates to the technical field of speed reducer emergency mechanisms, in particular to an emergency clutch device for a speed reducer, which comprises a box body, a first outer gear shaft sleeve and a second outer gear shaft sleeve are correspondingly arranged in the box body, and an inner gear ring is arranged outside the first outer gear shaft sleeve and the second outer gear shaft sleeve in a spanning mode. The two ends of the pin shaft are fixed in the box body, the shifting fork is arranged on the pin shaft in a sliding and sleeving mode, and the operating unit drives the shifting fork to slide on the pin shaft. The pin shaft and the inner gear ring are arranged in parallel, the bottom end of the shifting fork is connected with the inner gear ring to drive the inner gear ring to be connected with or separated from the first outer gear shaft sleeve, the control unit comprises a handle and a swing arm, the handle is fixedly connected with the first end of the swing arm through a wrenching shaft, and the wrenching shaft is rotationally connected with the box body. The second end of the swing arm is rotationally connected with the shifting fork. The device is convenient to disassemble and assemble, and can be matched with motors and speed reducers of various models.

Description

Technical Field

[0001] The utility model relates to the technical field of reducer emergency mechanisms, in particular to an emergency clutch device for a reducer. Background Art

[0002] In large equipment such as ship loading and unloading machines, the operating mechanism often needs to be designed with an emergency function to prevent the normal motor from affecting the function of the entire machine after damage. For this reason, an emergency motor needs to be added to the reducer. However, the emergency motor and the reducer cannot be connected all the time. They must be connected when needed and disconnected when not needed. Therefore, a simple emergency clutch device for the reducer is designed to meet this functional requirement. Summary of the Invention

[0003] The utility model aims to solve the problem that the existing reducer lacks emergency function and the damage of the common motor will affect the function of the whole machine. An emergency clutch device for the reducer is provided, which is easy to disassemble and assemble and can match various models of motors and reducers.

[0004] In order to achieve the above purpose, the technical solution of the utility model is:

[0005] An emergency clutch device for a speed reducer comprises a housing, wherein a first externally toothed shaft sleeve and a second externally toothed shaft sleeve are correspondingly disposed within the housing, wherein an internal gear ring is disposed across the first and second externally toothed shaft sleeves, and further comprising a pin shaft with both ends fixed within the housing, a shift fork slidably sleeved on the pin shaft, and an operating unit for driving the shift fork to slide on the pin shaft; the pin shaft is disposed parallel to the internal gear ring, the bottom end of the shift fork is connected to the internal gear ring, driving the internal gear ring to engage or disengage with the first externally toothed shaft sleeve, and the operating unit comprises a handle and a swing arm, wherein the first end of the handle and the swing arm are fixedly connected via a pull shaft, the pull shaft being rotationally connected to the housing, and the second end of the swing arm being rotationally connected to the shift fork. The first externally toothed shaft sleeve is connected to the speed reducer, and the second externally toothed shaft sleeve is connected to the emergency motor.

[0006] Furthermore, an oil inlet is provided at the left end of the pin, and an oil outlet is provided at the upper portion of the pin, with an oil passage formed between the inlet and the outlet. Lubricating oil is added from the inlet, passes through the oil passage, and reaches the interface between the pin and the shift fork from the outlet, providing lubrication as the shift fork slides along the pin, thereby reducing friction between the two.

[0007] Furthermore, the swing arm is in an elongated shape, a rectangular groove is provided on the upper surface of the swing arm near the first end, and a rectangular protrusion matching the rectangular groove is provided on the bottom of the pull shaft. The pull shaft rotates to drive the swing arm to rotate.

[0008] Furthermore, a pulley is provided on the lower surface of the swing arm near the second end through a fixed shaft, and a sliding groove matching the pulley is provided on the upper surface of the shift fork. When the swing arm rotates, the pulley moves in the sliding groove and drives the shift fork to slide along the pin shaft.

[0009] Furthermore, the handle has a rotation angle of 0 to 29 degrees. When the handle is rotated 0 degrees, the motor is engaged with the reducer; when the handle is rotated 29 degrees, the motor is separated from the reducer.

[0010] Furthermore, the shift fork has a sliding portion and a clamping portion connected to each other up and down, the sliding portion is in an elongated strip shape, the upper portion of the clamping portion is connected to the sliding portion, and the lower portion is in a semicircular shape. The clamping portion is used to drive the inner gear ring to move relative to the first outer gear sleeve.

[0011] Furthermore, an annular groove matching the clamping portion is provided on the inner gear ring. The clamping portion is slidably connected to the inner gear ring.

[0012] Through the above technical solution, the beneficial effects of the utility model are:

[0013] The utility model is provided with a handle, a trigger shaft, a swing arm and a shift fork. When the handle is rotated, the shift fork is moved left and right on the pin shaft through the transmission action between the trigger shaft and the swing arm, thereby realizing the engagement and separation of the power of the equipment. The utility model has a simple structure, a high degree of standardization and modularization, and is convenient and quick to assemble and disassemble. By modifying the shaft diameter and other dimensions of the input and output ends, it can match various models of motors and reducers. The clutch function of the motor and the reducer is realized at an extremely low cost, and the continuous and stable operation of the equipment can be maintained in an emergency, thereby improving the safety and reliability of the equipment and reducing the downtime caused by sudden failures. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 This is a schematic structural diagram of the inner gear ring and the first outer gear sleeve of the utility model;

[0016] Figure 3 This is a schematic structural diagram of the utility model in which the inner gear ring and the first outer gear shaft sleeve are separated;

[0017] Figure 4 It is an exploded view of the internal structure of the utility model;

[0018] The numbers in the accompanying drawings are: 1 is the box body, 2 is the first external gear sleeve, 3 is the second external gear sleeve, 4 is the inner gear ring, 5 is the pin shaft, 51 is the oil channel, 6 is the shift fork, 61 is the sliding part, 611 is the slide groove, 62 is the clamping part, 621 is the fork foot, 7 is the operating unit, 71 is the handle, 72 is the swing arm, 721 is the rectangular groove, 722 is the pulley, and 73 is the pull shaft. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0020] like Figures 1 to 4 As shown, this embodiment provides an emergency clutch device for a speed reducer, comprising a housing 1, in which a first externally toothed shaft sleeve 2 and a second externally toothed shaft sleeve 3 are correspondingly arranged. The first externally toothed shaft sleeve 2 and the second externally toothed shaft sleeve 3 are concentrically arranged with a gap therebetween. An inner gear ring 4 is provided across the outer circumference of the second end of the first externally toothed shaft sleeve 2 and the first end of the second externally toothed shaft sleeve 3. The inner gear ring 4 is meshed with the first externally toothed shaft sleeve 2 and the second externally toothed shaft sleeve 3, respectively, and can slide along the axial direction and has two states of engagement and disengagement with the first externally toothed shaft sleeve 2. The first externally toothed shaft sleeve 2 is connected to the speed reducer, and the second externally toothed shaft sleeve 3 is connected to the emergency motor.

[0021] When the inner ring gear 4 is engaged with the first outer gear sleeve 2, the inner ring gear 4 is sleeved on the outer ends of the two outer gear sleeves, and the torque can be transmitted from the first outer gear sleeve 2 to the second outer gear sleeve 3; when the inner ring gear 4 is separated from the first outer gear sleeve 2, only one end of the inner ring gear 4 is engaged with the second outer gear sleeve 3, and the inner ring gear 4 and the first outer gear sleeve 2 are in a separated state, and the torque cannot be transmitted from the first outer gear sleeve 2 to the second outer gear sleeve 3.

[0022] The emergency clutch device for the reducer also includes a pin shaft 5 with both ends fixed in the housing 1, a fork 6 slidably sleeved on the pin shaft 5, and an operating unit 7 for driving the fork 6 to slide on the pin shaft 5; the pin shaft 5 is arranged parallel to the inner ring gear 4, the bottom end of the fork 6 is connected to the inner ring gear 4, driving the inner ring gear 4 to engage or disengage with the first outer gear shaft sleeve 2, the operating unit 7 includes a handle 71 and a swing arm 72, the first ends of the handle 71 and the swing arm 72 are fixedly connected by a pull shaft 73, the pull shaft 73 is rotationally connected to the housing 1, and the second end of the swing arm 72 is rotationally connected to the fork 6.

[0023] like Figures 2 and 3 As shown, by rotating the handle 71, the pull shaft 73 drives the first end of the swing arm 72 to rotate, and the second end of the swing arm 72 rotates around the pull shaft 73 with the first end as the center. Since the second end of the swing arm 72 is rotationally connected to the shift fork 6, during the rotation of the swing arm 72, the shift fork 6 is driven to translate on the pin shaft 5, and then the inner gear ring 4 is driven to move in the same direction.

[0024] Specifically, if Figure 4 As shown, the pin shaft 5 is cylindrical, an oil filling port is provided at the left end of the pin shaft 5, an oil outlet is provided at the upper part of the pin shaft 5, an oil channel 51 is formed between the oil filling port and the oil outlet, a left baffle is provided at the left end of the pin shaft 5, and a plug matching the oil filling port is provided on the left baffle; remove the left baffle, add lubricating oil from the oil filling port, the lubricating oil passes through the oil channel and comes from the oil outlet to the interface between the pin shaft 5 and the shift fork 6, playing a lubricating role in the process of the shift fork 6 sliding along the pin shaft 5, thereby reducing the friction between the two.

[0025] As an implementable embodiment, the swing arm 72 is in the shape of a long strip, and a rectangular groove 721 is provided on the upper surface of the swing arm 72 near the first end, and a rectangular protrusion matching the rectangular groove 721 is provided on the bottom of the pull shaft 73. A pulley 722 is provided on the lower surface of the swing arm 72 near the second end through a fixed axis rotation, and a sliding groove 611 matching the pulley 722 is provided on the upper surface of the shift fork 6. During the rotation of the swing arm 72, the pulley 722 moves in the sliding groove 611 and drives the shift fork 6 to slide along the pin shaft 5.

[0026] Specifically, the trigger shaft 73 is located at the upper portion of the outer side of the housing 1 and is connected to the handle 71. The handle 71 is cylindrical and arranged horizontally with the top cover of the housing 1. During use, the motor and reducer are separated or engaged by holding the handle 71 and rotating it a certain angle. The trigger shaft 73 is located at the lower portion of the inner side of the housing 1 and is fixedly connected to the swing arm 72 by bolts. In this embodiment, the maximum rotation angle of the handle 71 is 29 degrees. When the handle 71 is rotated 0 degrees, the motor and reducer are engaged; when the handle 71 is rotated 29 degrees, the motor and reducer are separated.

[0027] The shift fork 6 has a sliding portion 61 and a clamping portion 62 connected to each other in an upper and lower manner. The sliding portion 61 is in an elongated shape, and a through hole matching the pin shaft 5 is provided at the center of the sliding portion 61. A rectangular sliding groove 611 is provided on the upper surface of the sliding portion 61; the upper portion of the clamping portion 62 is connected to the sliding portion 61, and the lower portion is semicircular. The clamping portion 62 is slidably connected to the inner gear ring 4, and an annular groove matching the clamping portion 62 is provided on the inner gear ring 4. The semicircular lower portion of the clamping portion 62 is located in the annular groove, and a fork foot 621 is relatively provided on the inner side of the clamping portion 62. The fork foot 621 matches the annular groove and pushes the inner gear ring 4 to move left and right. In this embodiment, the fork foot 621 is rectangular, and the fork foot 621 is preferably made of wear-resistant material to ensure the stability and reliability of the shift fork foot 621 when changing gears.

[0028] The working principle of this utility model:

[0029] When in use, the output shaft of the emergency motor is connected to the second outer gear sleeve 3, and the input shaft of the reducer is connected to the first outer gear sleeve 2. The initial position when the handle 71 is perpendicular to the axis of the inner gear ring 4 is recorded as the 0° position. At this time, the inner gear ring 4 is engaged with the first outer gear sleeve 2, and torque can be transmitted between the reducer and the emergency motor; turn the handle 71 counterclockwise, and as the handle 71 rotates, the pull shaft 73 connected to the handle 71 drives the first end of the swing arm 72 to rotate, and the second end of the swing arm 72 rotates around the pull shaft 73 with the first end as the center of the circle. During the rotation of the swing arm 72, the pulley 722 moves in the slide groove 611 and drives the shift fork 6 to slide along the direction of the pin shaft 5. Since the bottom end of the shift fork 6 is located in the annular groove of the inner gear ring 4, the shift fork 6 drives the inner gear ring 4 to move in the direction away from the first outer gear sleeve 2 during the movement, so that the inner gear ring 4 is separated from the first outer gear sleeve 2, thereby realizing the separation of the emergency motor and the reducer.

[0030] The embodiments described above are only preferred embodiments of the present invention and do not limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structure, features and principles described in the patent scope of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. An emergency clutch device for a speed reducer, comprising a housing (1), wherein a first external gear shaft sleeve (2) and a second external gear shaft sleeve (3) are correspondingly arranged in the housing (1), and an inner gear ring (4) is arranged outside the first external gear shaft sleeve (2) and the second external gear shaft sleeve (3), characterized in that: The invention also includes a pin shaft (5) with both ends fixed in the housing, a shift fork (6) slidably sleeved on the pin shaft (5), and an operating unit (7) for driving the shift fork to slide on the pin shaft; the pin shaft (5) is arranged parallel to the inner gear ring (4); the bottom end of the shift fork (6) is connected to the inner gear ring (4) to drive the inner gear ring (4) to engage or disengage with the first outer gear shaft sleeve (2); the operating unit (7) includes a handle (71) and a swing arm (72); the first ends of the handle (71) and the swing arm (72) are fixedly connected via a pull shaft (73); the pull shaft (73) is rotationally connected to the housing (1); and the second end of the swing arm (72) is rotationally connected to the shift fork (6).

2. The emergency clutch device for a speed reducer according to claim 1, characterized in that: An oil filling port is provided at the left end of the pin shaft (5), an oil outlet is provided at the upper portion of the pin shaft (5), and an oil passage (51) is formed between the oil filling port and the oil outlet.

3. The emergency clutch device for a speed reducer according to claim 1, characterized in that: The swing arm (72) is in the shape of an elongated strip. A rectangular groove (721) is provided on the upper surface of the swing arm (72) close to the first end. A rectangular protrusion matching the rectangular groove (721) is provided on the bottom of the pull shaft (73).

4. The emergency clutch device for a speed reducer according to claim 1, characterized in that: A pulley (722) is provided on the lower surface of the swing arm (72) near the second end via a fixed shaft, and a sliding groove (611) matching the pulley (722) is provided on the upper surface of the shift fork (6).

5. The emergency clutch device for a speed reducer according to claim 1, characterized in that: The rotation angle of the handle (71) is 0-29°.

6. The emergency clutch device for a speed reducer according to claim 1, characterized in that: The shift fork (6) comprises a sliding portion (61) and a clamping portion (62) connected to each other in an upper and lower manner. The sliding portion (61) is in an elongated strip shape. The upper portion of the clamping portion (62) is connected to the sliding portion (61), and the lower portion is in a semicircular shape.

7. The emergency clutch device for a speed reducer according to claim 6, characterized in that: An annular groove matching the clamping portion (62) is provided on the inner gear ring (4).

Images