Speed reducer capable of rapidly adjusting frequency

Abstract

The utility model relates to the technical field of speed reducers, in particular to a speed reducer capable of quickly adjusting frequency, which comprises a casing, a control groove is arranged on the right side wall of the casing, a first rotating shaft is rotatably connected to the inner wall of the casing, a sliding groove is arranged on the surface of the first rotating shaft, and a support frame is sleeved on the surface of the first rotating shaft. The surface of the first rotating shaft is sleeved with a driving wheel, the inner wall of the supporting frame is rotationally connected with a driven wheel, the inner wall of the machine shell is rotationally connected with a second rotating shaft, and a plurality of clamping grooves are formed in the surface of the second rotating shaft. By arranging the control groove, the first rotating shaft, the driving wheel, the driven wheel, the second rotating shaft, the adjusting wheels and the control rod, the control rod is pulled during use, so that the driving wheel drives the driven wheel to move and move along the track of the sliding groove, and the driven wheel is controlled to be meshed with different adjusting wheels to adjust the rotating speed of the second rotating shaft; therefore, a rapid frequency modulation function is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of speed reducers, in particular to a speed reducer capable of rapid frequency regulation. Background Art

[0002] A reducer is an independent component consisting of a gear drive, worm drive, or gear-worm drive enclosed in a rigid housing. It is commonly used as a reduction gear between a prime mover and a working machine. It matches speeds and transmits torque between the prime mover and the working machine or actuator, and is widely used in modern machinery.

[0003] In the prior art, the reducer also has the function of frequency modulation, which can meet the power output of different speeds. Usually, the speed regulation of the reducer is achieved by meshing two different gears with each other, relying on the different number of teeth between the gears to achieve frequency modulation. However, under this method, when the reducer needs to be frequency modulated, it is necessary to wait for the output shaft of the reducer to stop, and then replace the two gears to achieve frequency modulation. This method is inefficient and cannot achieve fast frequency modulation. Therefore, we propose a reducer with fast frequency modulation to solve the above problems. Utility Model Content

[0004] The purpose of the present invention is to provide a speed reducer capable of rapid frequency regulation to solve the problems raised in the above-mentioned background technology.

[0005] The technical solution of the utility model is: a reducer with rapid frequency regulation, comprising a casing, a control slot is provided on the right side wall of the casing, the inner wall of the casing is rotatably connected to a first rotating shaft, a sliding slot is provided on the surface of the first rotating shaft, a support frame is sleeved on the surface of the first rotating shaft, a driving wheel is sleeved on the surface of the first rotating shaft, a driven wheel is rotatably connected to the inner wall of the support frame, the inner wall of the casing is rotatably connected to the second rotating shaft, a plurality of slots are provided on the surface of the second rotating shaft, a telescopic rod is fixedly connected to the inner wall of the slot, a movable column is fixedly connected to the upper end of the telescopic rod, the surface of the movable column is rotatably connected to the movable rod, and a movable column is provided above the movable column. A card block is provided, a sliding groove is provided on the lower surface of the card block, a plurality of adjusting wheels are sleeved on the surface of the second rotating shaft, an annular groove is provided at the front end of the plurality of adjusting wheels, a circular ring is provided on the inner wall of the plurality of annular grooves, a fixing rod is fixedly connected to the front end of the plurality of circular rings, the upper surfaces of the plurality of fixing rods are fixedly connected to the inner wall of the casing, a control rod is fixedly connected to the side wall of the support frame, two symmetrically arranged limiting grooves are provided on the surface of the control rod, the inner walls of the two limiting grooves are fixedly connected with a cylinder, the surfaces of the two cylinders are sleeved with springs, the ends of the two springs away from the control rod are fixedly connected with a ball, and a plurality of switches are provided on the inner wall of the control groove.

[0006] Preferably, there are multiple groups of longitudinal grooves in the control groove, and the longitudinal grooves and the switches in the grooves correspond one to one with the multiple groups of gears of the regulating wheel.

[0007] Preferably, two sliding blocks are fixedly connected to the inner wall of the driving wheel, and the sizes of the sliding blocks match the sliding grooves.

[0008] Preferably, the driven wheel is larger than the driving wheel, and the driven wheel is meshedly connected with the surface of the driving wheel.

[0009] Preferably, the plurality of adjusting wheels are a group of gear combinations with different sizes and numbers of meshing teeth, and the gear combination can be meshed and connected with the driven wheel.

[0010] Preferably, a wedge-shaped groove is provided on the inner wall of the adjusting wheel, and the size of the wedge-shaped groove matches the clamping block.

[0011] Preferably, the inner wall of the control groove is provided with a plurality of groups of semicircular grooves, and the sizes of the semicircular grooves match those of the balls.

[0012] Preferably, the size of the movable rod matches the sliding groove, and the movable rod is slidably connected to the inner wall of the sliding groove.

[0013] The present invention provides a speed reducer capable of rapid frequency modulation through improvement, which has the following improvements and advantages compared with the prior art:

[0014] First: The utility model is provided with a control groove, a first rotating shaft, a driving wheel, a driven wheel, a second rotating shaft, an adjusting wheel and a control lever. When in use, the control lever is pulled to make the driving wheel drive the driven wheel to move along the track of the sliding groove, and the driven wheel is controlled to engage with different adjusting wheels to adjust the speed of the second rotating shaft, thereby realizing the function of rapid frequency modulation.

[0015] Second, the present invention provides a card slot, a telescopic rod, a switch, a card block, a movable column and a movable rod. When in use, the telescopic rod is extended by the pressure of the control lever on the switch, driving 11 to extend from the card slot and engage with the wedge-shaped groove of the adjusting wheel, so that when the corresponding adjusting wheel rotates, the second rotating shaft is driven to rotate together. For other switches that are not subjected to the pressure of the control lever, the corresponding card blocks are not extended from the card slot. At this time, when the second rotating shaft rotates, these corresponding adjusting wheels will not be rotated, thereby facilitating better engagement between the driven wheel and the corresponding adjusting wheel during the next frequency adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0017] Figure 1 This is a front view structural diagram of the present utility model;

[0018] Figure 2This is a schematic diagram of the second rotating shaft structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the fixing rod structure of the utility model;

[0020] Figure 4 This is a schematic structural diagram of the driven wheel of the utility model;

[0021] Figure 5 This is a schematic diagram of the driving wheel structure of the utility model;

[0022] Figure 6 This is a schematic diagram of the control tank structure of the utility model;

[0023] Figure 7 It is for Figure 6 A in the middle is an enlarged structural diagram;

[0024] Figure 8 It is a schematic diagram of the card block structure of the present utility model.

[0025] Description of reference numerals:

[0026] 1. Casing; 2. Control slot; 3. First rotating shaft; 4. Sliding slot; 5. Support frame; 6. Driving wheel; 7. Driven wheel; 8. Second rotating shaft; 9. Slot; 10. Telescopic rod; 11. Block; 12. Adjusting wheel; 13. Annular groove; 14. Ring; 15. Fixed rod; 16. Control rod; 17. Limiting slot; 18. Cylinder; 19. Spring; 20. Ball; 21. Switch; 22. Movable column; 23. Movable rod; 24. Sliding slot. DETAILED DESCRIPTION

[0027] The following is a detailed description of the present invention, clearly and completely describing the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] The utility model provides a reducer capable of rapid frequency modulation through improvement. The technical solution of the utility model is:

[0029] like Figure 1 - Figure 8As shown, a reducer with rapid frequency regulation includes a casing 1, a control slot 2 is opened on the right side wall of the casing 1, the inner wall of the casing 1 is rotatably connected to the first rotating shaft 3, the surface of the first rotating shaft 3 is opened with a sliding slot 4, the surface of the first rotating shaft 3 is sleeved with a support frame 5, the surface of the first rotating shaft 3 is sleeved with a driving wheel 6, the inner wall of the support frame 5 is rotatably connected to the driven wheel 7, the inner wall of the casing 1 is rotatably connected to the second rotating shaft 8, the surface of the second rotating shaft 8 is opened with a plurality of card slots 9, the inner wall of the card slot 9 is fixedly connected to a telescopic rod 10, the upper end of the telescopic rod 10 is fixedly connected to a movable column 22, the surface of the movable column 22 is rotatably connected to a movable rod 23, the upper method of the movable column 22 is provided with a card block 11, the lower part of the card block 11 A sliding groove 24 is provided on the surface, and a plurality of adjusting wheels 12 are sleeved on the surface of the second rotating shaft 8. An annular groove 13 is provided at the front end of the plurality of adjusting wheels 12, and a ring 14 is provided on the inner wall of the plurality of annular grooves 13. A fixing rod 15 is fixedly connected to the front end of the plurality of rings 14. The upper surfaces of the plurality of fixing rods 15 are fixedly connected to the inner wall of the casing 1. A control rod 16 is fixedly connected to the side wall of the support frame 5. Two symmetrically arranged limiting grooves 17 are provided on the surface of the control rod 16. The inner walls of the two limiting grooves 17 are fixedly connected to cylinders 18. The surfaces of the two cylinders 18 are sleeved with springs 19. The ends of the two springs 19 away from the control rod 16 are fixedly connected to balls 20. The inner wall of the control groove 2 is provided with a plurality of switches 21.

[0030] Furthermore, the control slot 2 has multiple sets of longitudinal slots, and the longitudinal slots and the switches 21 in the slots correspond one-to-one with the multiple sets of gears and telescopic rods 10 of the adjusting wheel 12. The balls 20 in different longitudinal slots control the corresponding telescopic rods 10 to control whether the corresponding gears drive the second rotating shaft 8 to rotate. The telescopic rods 10 corresponding to the multiple sets of gears are started and closed by the switches 21 in the corresponding longitudinal slots.

[0031] Furthermore, two sliders are fixedly connected to the inner wall of the driving wheel 6 , and the sizes of the sliders match the sliding groove 4 . By providing the sliders, the driving wheel 6 can move back and forth in the sliding groove 4 .

[0032] Furthermore, the size of the driven wheel 7 is larger than that of the driving wheel 6, and the driven wheel 7 is meshed with the surface of the driving wheel 6. By setting the driven wheel 7 with a gear larger than that of the driving wheel 6, the speed of the driven wheel 7 is lower than that of the driving wheel 6.

[0033] Furthermore, the multiple adjusting wheels 12 are a group of gear combinations with different sizes and numbers of meshing teeth, and the gear combination can be meshed and connected with the driven wheel 7. By setting multiple meshing teeth of different sizes and numbers, the requirements of different speeds can be met.

[0034] Furthermore, a wedge-shaped groove is provided on the inner wall of the adjusting wheel 12, and the size of the wedge-shaped groove matches the clamping block 11. The clamping block 11 is connected or separated from the wedge-shaped groove by the telescopic rod 10, so that the adjusting wheel 12 rotates with the second rotating shaft 8 or cancels the linkage.

[0035] Furthermore, the inner wall of the control groove 2 is provided with multiple groups of semicircular grooves, and the size of the semicircular grooves matches the ball 20. When the control rod 16 moves to allow the ball 20 to enter the semicircular grooves, the control rod 16 can be limited.

[0036] Furthermore, the size of the movable rod 23 matches the slide groove 24, and the movable rod 23 is slidably connected to the inner wall of the slide groove 24. When the telescopic rod 10 is extended or shortened, the movable rod 23 moves in the slide groove 24, and the movable column 22 and the movable rod 23 rotate to adjust the angle of the block 11, so that the block 11 can be smoothly raised or lowered.

[0037] Working principle: When in use, first rotate the first rotating shaft 3, the first rotating shaft 3 drives the driving wheel 6 to rotate, the driving wheel 6 drives the driven wheel 7 to rotate, and the driven wheel 7 drives the adjusting wheel 12 to rotate, so as to change the speed and realize the deceleration function. When the speed needs to be adjusted, first press the control rod 16 down, and then move the casing 1 horizontally to the required position. The control rod 16 drives the support frame 5 to move together. Because a slider is provided in the driving wheel 6, the driving wheel 6 follows the support frame 5 along the sliding groove 4 to the required position. Then the operator manually pushes the control rod 16 upward until the ball 20 is stuck in the semicircular groove. At the same time, the surface of the control rod 16 presses the switch 21 to start the corresponding telescopic rod 10, so that the telescopic rod 10 drives the card block 11 rises and gets into the wedge-shaped groove of the adjusting wheel 12. At the same time, the driven wheel 7 contacts the corresponding adjusting wheel 12, driving the adjusting wheel 12 to rotate. Because the card block 11 is stuck in the wedge-shaped groove of the adjusting wheel 12, the adjusting wheel 12 drives the second rotating shaft 8 to rotate together. When the speed is adjusted next time, the control rod 16 is also pulled downward. At this time, the pressure of the control rod 16 on the switch 21 disappears, and the corresponding telescopic rod 10 drives the card block 11 to drop into the card slot 9. The limit of the card block 11 on the adjusting wheel 12 is released. At this time, the second rotating shaft 8 is no longer affected by the adjusting wheel 12 and gradually slows down to a stop. Then the control rod 16 is translated to the desired gear position and pushed up again. Similarly, it acts on the corresponding adjusting wheel 12 to achieve rapid frequency modulation.

[0038] The above description is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A speed reducer capable of rapid frequency modulation, comprising a housing (1), characterized in that: The right side wall of the housing (1) is provided with a control slot (2), the inner wall of the housing (1) is rotatably connected to a first rotating shaft (3), the surface of the first rotating shaft (3) is provided with a sliding slot (4), the surface of the first rotating shaft (3) is provided with a support frame (5), the surface of the first rotating shaft (3) is provided with a driving wheel (6), the inner wall of the support frame (5) is rotatably connected to a second rotating shaft (8), the surface of the second rotating shaft (8) is provided with a plurality of slots (9), the inner wall of the slot (9) is fixedly connected to a telescopic rod (10), the upper end of the telescopic rod (10) is fixedly connected to a movable column (22), the surface of the movable column (22) is rotatably connected to a movable rod (23), a block (11) is provided above the movable column (22), the lower surface of the block (11) is provided with a sliding slot ( 24), the surface of the second rotating shaft (8) is provided with a plurality of adjusting wheels (12), the front ends of the plurality of adjusting wheels (12) are provided with annular grooves (13), the inner walls of the plurality of annular grooves (13) are provided with circular rings (14), the front ends of the plurality of circular rings (14) are fixedly connected with fixed rods (15), the upper surfaces of the plurality of fixed rods (15) are fixedly connected with the inner wall of the housing (1), the side wall of the support frame (5) is fixedly connected with a control rod (16), the surface of the control rod (16) is provided with two symmetrically arranged limiting grooves (17), the inner walls of the two limiting grooves (17) are fixedly connected with cylinders (18), the surfaces of the two cylinders (18) are provided with springs (19), the ends of the two springs (19) away from the control rod (16) are fixedly connected with balls (20), and the inner wall of the control groove (2) is provided with a plurality of switches (21).

2. A reducer capable of rapid frequency modulation according to claim 1, characterized in that: The control slot (2) has multiple groups of longitudinal slots, and the longitudinal slots and the switches (21) in the slots correspond one to one with the multiple groups of gears of the regulating wheel (12).

3. The reducer capable of rapid frequency modulation according to claim 1, characterized in that: Two sliding blocks are fixedly connected to the inner wall of the driving wheel (6), and the sizes of the sliding blocks match the sliding groove (4).

4. The reducer capable of rapid frequency modulation according to claim 1, characterized in that: The driven wheel (7) is larger in size than the driving wheel (6), and the driven wheel (7) is meshedly connected with the surface of the driving wheel (6).

5. The reducer capable of rapid frequency modulation according to claim 1, characterized in that: The plurality of regulating wheels (12) are a group of gear combinations with different sizes and meshing tooth numbers, and the gear combination and the driven wheel (7) can be meshed and connected.

6. The reducer capable of rapid frequency modulation according to claim 1, characterized in that: The inner wall of the regulating wheel (12) is provided with a wedge-shaped groove, and the size of the wedge-shaped groove matches the clamping block (11).

7. The reducer capable of rapid frequency modulation according to claim 1, characterized in that: The inner wall of the control groove (2) is provided with a plurality of groups of semicircular grooves, and the sizes of the semicircular grooves match those of the balls (20).

8. The reducer capable of rapid frequency modulation according to claim 1, characterized in that: The size of the movable rod (23) matches the sliding groove (24), and the movable rod (23) is slidably connected to the inner wall of the sliding groove (24).

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