Power switching device for a reduction gearbox

Abstract

The utility model relates to a power switching device for reduction gearbox, including the reduction gearbox body, the bevel gear box body, the clutch box body and motor from left to right set gradually, the input shaft in the reduction gearbox body enters the clutch box body through the bevel gear box body, the input shaft is supported in the bevel gear box body through the bearing, the clutch box body is built -in shift fork clutch, the shift fork clutch is equipped with axial limiting mechanism, the input shaft connects auxiliary power mechanism, the auxiliary power mechanism sets up on the bevel gear box body, the auxiliary power mechanism includes hand wheel axle, hand wheel driving bevel gear and passive bevel gear, and hand wheel axle rotation sets up on the bevel gear box body, one end of hand wheel axle that stretches into the bevel gear box body is connected hand wheel driving bevel gear, and the input shaft is equipped with passive bevel gear corresponding hand wheel driving bevel gear. The utility model under the condition of power failure or motor trouble, shift fork clutch uncouples, and hand wheel axle connects other power drive a pair of bevel gears and drives input shaft rotation, and makes the reduction machine normal operation through auxiliary power.

Description

Technical Field

[0001] This utility model relates to the field of gearbox technology, specifically to a power switching device for a gearbox. Background Technology

[0002] The gearbox is a core component of a mechanical transmission system. Its main function is to match the demands of the power source (motor) and the load equipment by reducing the rotational speed and increasing the output torque. Currently, most gearboxes on the market are directly connected to the motor at the input end, or connected via a coupling, and the connection cannot be interrupted. In the event of a power outage or motor failure, the gearbox will not operate. Utility Model Content

[0003] The purpose of this utility model is to overcome the above-mentioned shortcomings and provide a power switching device for a gearbox. In the event of power failure or motor failure, the shift fork clutch disengages, and the handwheel shaft is connected to other power to drive a pair of bevel gears to rotate the input shaft, thereby enabling the gearbox to operate normally through auxiliary power.

[0004] The purpose of this utility model is achieved as follows:

[0005] A power switching device for a gearbox includes a gearbox body, a bevel gearbox body, a clutch housing, and a motor arranged sequentially from left to right. The gearbox body has a multi-stage gear transmission. The input shaft inside the gearbox body enters the clutch housing via the bevel gearbox body. The input shaft is supported on the bevel gearbox body by bearings. The clutch housing has a built-in shift fork clutch equipped with an axial limiting mechanism. The input shaft is connected to an auxiliary power mechanism, which is mounted on the bevel gearbox body. The auxiliary power mechanism includes a handwheel shaft, a handwheel driving bevel gear, and a driven bevel gear. The handwheel shaft is rotatably mounted on the bevel gearbox body. One end of the handwheel shaft extending into the bevel gearbox body is connected to the handwheel driving bevel gear. The input shaft has a driven bevel gear corresponding to the handwheel driving bevel gear.

[0006] Preferably, the handwheel shaft is rotatably supported on a bearing seat, and the bearing seat is fixed to the bevel gearbox body.

[0007] Preferably, the end of the handwheel shaft extending out of the bevel gear housing is used to mount a handwheel or an electric wrench.

[0008] Preferably, the shift fork clutch includes a clutch driving part, a clutch driven part, a support seat, and a shift fork lever. The input shaft is connected to the clutch driven part, the clutch driving part is connected to the output shaft of the motor, the clutch driven part is rotatably connected to the support seat, and the support seat is used to connect the shift fork lever and the axial limiting mechanism.

[0009] Preferably, the axial limiting mechanism includes a support rod, a limiting rod, a limiting seat, and a handwheel. One end of the support rod is screwed to the support seat and locked with a nut, and the other end is engaged with the limiting rod, which can move radially along the support seat.

[0010] Preferably, when the clutch is engaged, the limit rod is located on the left side of the support rod; when the clutch is disengaged, the limit rod is located on the right side of the support rod.

[0011] Preferably, the limiting seat is fixed on the clutch housing, the limiting rod is slidably disposed in the limiting seat, the limiting seat is provided with a sliding groove corresponding to the limiting rod, and one end of the limiting rod extending out of the clutch housing is connected to the handwheel.

[0012] Preferably, the inner end of the limiting rod near the support rod is provided with a limiting retaining ring, and the sliding groove of the limiting seat is provided with a throat section corresponding to the limiting retaining ring.

[0013] The beneficial effects of this utility model are:

[0014] In the event of a power outage or motor failure, the shift fork clutch disengages, and the handwheel shaft connects to other power sources to drive a pair of bevel gears to rotate the input shaft, enabling the reducer to operate normally through auxiliary power.

[0015] The shift fork clutch is equipped with an axial limiting mechanism, which prevents the driven part of the clutch from disengaging to the left when the clutch is engaged, ensuring stable power transmission from the motor; and prevents the driven part of the clutch from engaging to the right when the clutch is disengaged, ensuring stable auxiliary power transmission. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a power switching device for a gearbox according to the present invention.

[0017] Figure 2 for Figure 1 AA sectional view.

[0018] Figure 3 for Figure 2 A magnified view of a portion of the image.

[0019] The components include: 1. Gearbox; 2. Bevel gearbox; 3. Clutchbox; 4. Motor; 5. Input shaft; 6. Clutch drive unit; 7. Clutch driven unit; 8. Support seat; 9. Shift fork lever; 10. Support rod; 11. Limit lever; 12. Limit seat; 13. Handwheel; 14. Nut; 15. Limit retaining ring; 16. Handwheel shaft; 17. Bearing seat; 18. Handwheel drive bevel gear; 19. Driven bevel gear. Detailed Implementation

[0020] See Figure 1-3This utility model relates to a power switching device for a gearbox, comprising a gearbox body 1, a bevel gearbox body 2, a clutch housing 3, and a motor 4 arranged sequentially from left to right. The gearbox body 1 has a multi-stage gear transmission. An input shaft 5 inside the gearbox body 1 enters the clutch housing 3 via the bevel gearbox body 2. The input shaft 5 is supported on the bevel gearbox body 2 by bearings. The clutch housing 3 houses a shift fork clutch, which includes a clutch driving part 6, a clutch driven part 7, a support seat 8, and a shift fork lever 9. The input shaft 5 is connected to the clutch driven part 7. The clutch driving part 6 is connected to the output shaft of the motor 4. The clutch driven part 7 is connected to the support seat 8 through a bearing. The support seat 8 is radially provided with a shift fork 10. The clutch housing 3 is provided with a shift fork opening corresponding to the shift fork 10. The support seat 8 is provided with a shift fork insertion hole corresponding to the shift fork 10. There are two shift fork openings at the front and rear. The shift fork openings are provided with plugs. When the clutch driving part 6 and the clutch driven part 7 need to disengage, the plugs are opened, and the shift fork 9 is inserted into the shift fork insertion hole on the support seat 8 through the shift fork opening. The shift fork 10 moves to the left, thereby disengaging the clutch driving part 6 and the clutch driven part 7.

[0021] The support base 8 is connected to an axial limiting mechanism, which includes a support rod 10, a limiting rod 11, a limiting seat 12, and a handwheel 13. One end of the support rod 10 is screwed to the support base 8 and locked by a nut 14, while the other end is engaged with the limiting rod 11, which can move radially along the support base 8. When the clutch is engaged, the limiting rod 11 is located on the left side of the support rod to prevent the clutch passive part 7 from moving axially to the left, thus ensuring that the clutch is engaged and prevented from disengaging.

[0022] The limiting seat 12 is fixed on the clutch housing 3, the limiting rod 11 is slidably disposed in the limiting seat 12, the limiting seat 12 is provided with a sliding groove corresponding to the limiting rod 11, and one end of the limiting rod 11 extending out of the clutch housing 3 is connected to the handwheel 13.

[0023] The limiting rod 11 is provided with a limiting retaining ring 15 at its inner end near the support rod 10. The sliding groove of the limiting seat 12 is provided with a throat section corresponding to the limiting retaining ring 15. The limiting retaining ring 15 plays a limiting role for the limiting rod 11, preventing the limiting rod 11 from falling off the limiting seat 12 during insertion and removal.

[0024] The input shaft 5 is connected to an auxiliary power mechanism, which is mounted on the bevel gearbox 2. The auxiliary power mechanism includes a handwheel shaft 16, a bearing seat 17, a handwheel drive bevel gear 18, and a driven bevel gear 19. The handwheel shaft 16 is rotatably supported on the bearing seat 17, which is fixed to the bevel gearbox 2. One end of the handwheel shaft 16 is hexagonal, and the other end is connected to the handwheel drive bevel gear 18. The input shaft 5 is equipped with a driven bevel gear 19 corresponding to the handwheel drive bevel gear 18. When the clutch is disengaged, the gearbox is driven by a handwheel or an electric wrench at the hexagonal position of the handwheel shaft.

[0025] Working principle:

[0026] Under normal circumstances, the clutch is engaged, the motor drives the input shaft to drive the reducer, and the limit rod is screwed in radially inward to engage with the support rod fixed on the support base. This prevents the support rod from driving the support base and the driven part of the clutch to move axially, causing the clutch to disengage, and ensuring stable power transmission under motor drive.

[0027] In case of power failure or motor malfunction, auxiliary transmission is used. First, unscrew the limit rod to release the engagement between the limit rod and the support rod. The support seat and the driven part of the clutch can move axially. Insert the shift fork rod into the corresponding shift fork rod insertion hole on the support seat. The shift fork rod drives the support seat and the driven part of the clutch on it to move to the left, disengaging the clutch. At this time, the support rod is located to the left of the limit rod. Screw the limit rod in, and the engagement between the limit rod and the support rod is re-established, limiting the clutch driven part in the reverse direction. Finally, at the hexagonal end of the handwheel shaft, the reducer can be driven by a handwheel or electric wrench.

[0028] In addition to the above embodiments, this utility model also includes other implementation methods. All technical solutions formed by equivalent transformation or equivalent substitution should fall within the protection scope of the claims of this utility model.

Claims

1. A power switching device for a gearbox, characterized in that: The device includes, from left to right, a reduction gearbox, a bevel gearbox, a clutch housing, and a motor. The input shaft inside the reduction gearbox enters the clutch housing via the bevel gearbox. The input shaft is supported on the bevel gearbox by bearings. The clutch housing contains a shift fork clutch equipped with an axial limiting mechanism. The input shaft is connected to an auxiliary power mechanism, which is mounted on the bevel gearbox. The auxiliary power mechanism includes a handwheel shaft, a handwheel driving bevel gear, and a driven bevel gear. The handwheel shaft is rotatably mounted on the bevel gearbox. One end of the handwheel shaft extending into the bevel gearbox is connected to the handwheel driving bevel gear. The input shaft has a driven bevel gear corresponding to the handwheel driving bevel gear.

2. The power switching device for a gearbox according to claim 1, characterized in that: The handwheel shaft is rotatably supported on a bearing seat, and the bearing seat is fixed to the bevel gearbox.

3. The power switching device for a gearbox according to claim 1, characterized in that: The end of the handwheel shaft extending out of the bevel gear housing is used to mount a handwheel or electric wrench.

4. The power switching device for a gearbox according to claim 1, characterized in that: The shift fork clutch includes a clutch driving part, a clutch driven part, a support seat, and a shift fork lever. The input shaft is connected to the clutch driven part, the clutch driving part is connected to the output shaft of the motor, the clutch driven part is rotatably connected to the support seat, and the support seat is used to connect the shift fork lever and the axial limiting mechanism.

5. A power switching device for a gearbox according to claim 4, characterized in that: The axial limiting mechanism includes a support rod, a limiting rod, a limiting seat, and a handwheel. One end of the support rod is screwed to the support seat and locked with a nut, while the other end is engaged with the limiting rod, which can move radially along the support seat.

6. A power switching device for a gearbox according to claim 5, characterized in that: When the clutch is engaged, the limit rod is located to the left of the support rod; when the clutch is disengaged, the limit rod is located to the right of the support rod.

7. A power switching device for a gearbox according to claim 5, characterized in that: The limiting seat is fixed on the clutch housing, the limiting rod is slidably disposed in the limiting seat, the limiting seat is provided with a sliding groove corresponding to the limiting rod, and one end of the limiting rod extending out of the clutch housing is connected to the handwheel.

8. A power switching device for a gearbox according to claim 7, characterized in that: The limiting rod is provided with a limiting retaining ring at its inner end near the support rod, and the sliding groove of the limiting seat is provided with a throat section corresponding to the limiting retaining ring.

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