Dual-drive speed reducer

Abstract

The utility model provides a dual-drive speed reducer, which relates to the field of mechanical transmission and comprises a box body, a cavity penetrating left and right is arranged in the box body, and a through hole is arranged on the lower side of the box body; the front flange and the rear flange are respectively fixed on the left and right sides of the box body; the middle flange is fixed at the through hole of the box body; the left and right ends of the outer side of the motor input shaft are respectively fixed on the box body and the inner wall of the front flange through two bearings; the upper end and the lower end of the shaft sleeve are fixed to the inner wall of the middle flange through two bearings respectively, and set screws are arranged on the side wall of the shaft sleeve. The manual driving shaft is coaxially arranged in an inner hole of the shaft sleeve in a sliding mode and provided with a first pin hole and a second pin hole which are vertically spaced, and the set screw is selectively in threaded connection with the first pin hole or the second pin hole. And the output bevel gear and the input bevel gear are coaxially fixed on the excircles of the upper ends of the motor input shaft and the manual driving shaft respectively. The structure is provided with two sets of independent driving systems, and when a power source is disconnected, the manual driving shaft can manually adjust the rotating angle of the speed reducer, so that the working condition reaches the required position.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical transmission, in particular to a double-drive reducer. Background Art

[0002] At present, the commonly used reduction transmission mechanisms on the market are all driven by power sources, such as electric motors or hydraulic motors. Some are directly driven, and some are driven through couplings. However, these drives will inevitably stop working during use due to power outages and other reasons. When this happens, some work is stagnant and the workbench stops on the travel trajectory. However, in actual work, it is often necessary to return the workstation to its original position to ensure normal operation next time, which is difficult to do. When the current reducer transmission mechanism is working, if the motor is working and encounters a power outage, the motor can only be removed and the reducer can be manually turned to return the workstation to its original position, which wastes a lot of manpower and material resources. In special cases, it may even fail to meet the return requirements.

[0003] Reducers with manual drive structures are widely used, especially for equipment that requires two drive systems. The existing devices are not only large in size, low in efficiency, difficult to operate, and noisy, but also have serious power loss problems during normal operation, which is mainly manifested in ineffective gear meshing, resulting in loud noise, difficult operation, and low timeliness of operation. Utility Model Content

[0004] In view of this, an embodiment of the utility model provides a dual-drive reducer, which aims to solve the problem that the existing reducer transmission mechanism cannot return to its original position in time when the power source driving stops working.

[0005] The embodiment of the utility model provides a dual-drive reducer, comprising:

[0006] A box body, wherein a cavity penetrating in the left and right directions is provided in the box body, and a through hole communicating with the cavity is provided on the lower side of the box body;

[0007] The front flange and the rear flange are fixed on the left and right sides of the box body respectively;

[0008] An intermediate flange is fixed at the through hole of the box body;

[0009] The motor input shaft is arranged in the cavity, and the left and right ends of the outer side of the motor input shaft are respectively fixed to the inner wall of the box body and the inner wall of the front flange through two bearings;

[0010] A shaft sleeve, the upper and lower ends of which are fixed to the inner wall of the intermediate flange through two bearings respectively, and a mounting hole is provided on the side wall of the shaft sleeve, and a set screw is installed in the mounting hole;

[0011] A manual drive shaft is coaxially slidably disposed in the inner hole of the shaft sleeve, and a first pin hole and a second pin hole are provided on the manual drive shaft, so that when the manual drive shaft slides, the set screw is selectively threadedly connected with the first pin hole or the second pin hole; and,

[0012] The output bevel gear and the input bevel gear are coaxially fixed on the outer circles of the motor input shaft and the upper end of the manual drive shaft, respectively, so that when the set screw is fixed in the first pin hole, the output bevel gear is in a meshing state with the input bevel gear, and when the set screw is fixed in the second pin hole, the output bevel gear is in a disengaged state with the input bevel gear.

[0013] Furthermore, it also includes a dust cover, which is arranged on the outside of the manual drive shaft and is detachably fixed to the lower end of the middle flange by screws.

[0014] Furthermore, the gear ratio between the input bevel gear and the output bevel gear is 1:2.

[0015] Furthermore, there is a clearance fit between the manual drive shaft and the inner hole of the sleeve.

[0016] Furthermore, a sealing ring is provided between the manual drive shaft and the shaft sleeve.

[0017] Furthermore, the motor input shaft and the bearings fixed outside the sleeve are both single-row deep groove ball bearings.

[0018] Furthermore, the external interface at the lower end of the manual drive shaft is a square interface.

[0019] Furthermore, the output bevel gear is press-fitted onto the outer circle of the motor input shaft and connected to the motor input shaft via a first flat key, and the motor input shaft is used to be connected to an external motor.

[0020] Furthermore, the input bevel gear is pressed onto the outer circle of the manual drive shaft and connected to the manual drive shaft via a second flat key. A threaded hole and a pressure plate are also provided at the upper end of the manual drive shaft. The pressure plate is screwed into the threaded hole and fixed to the manual drive shaft via a countersunk screw.

[0021] The beneficial effect of the technical solution provided by the embodiment of the utility model is that in the dual-drive reducer of the utility model, the manual drive structure is disconnected and closed by sliding the manual drive shaft in the inner hole of the sleeve and cooperating between the set screw and the first pin hole and the second pin hole. When the set screw is set in the second pin hole, the input bevel gear and the output bevel gear are in a disengaged state, and at this time, the motor drive can be adopted; when the set screw is set in the first pin hole, the input bevel gear and the output bevel gear are in a meshing state, and at this time, the manual drive can be adopted.

[0022] The dual-drive reducer structure has two independent drive systems to cope with emergencies. When the power source is disconnected, the manual drive shaft can manually adjust the reducer rotation angle, thereby adjusting the load displacement to achieve the required working position. The adjustment is simple and convenient, with strong reliability and labor saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a dual-drive reducer provided by the utility model in which the output bevel gear and the input bevel gear are disengaged;

[0024] Figure 2 yes Figure 1 A schematic diagram of the structure of the manual drive shaft;

[0025] Figure 3 yes Figure 1 Schematic diagram of the structure in which the output bevel gear and the input bevel gear are in meshing state.

[0026] In the figure: 1, third flat key; 2, front flange; 3, first single-row deep groove ball bearing; 4, first flat key; 5, first hexagon socket cylindrical head screw; 6, output bevel gear; 7, housing; 8, motor input shaft; 9, second single-row deep groove ball bearing; 10, second hexagon socket cylindrical head screw; 11, rear flange; 12, third hexagon socket cylindrical head screw; 13, dust cover; 14, fourth hexagon socket cylindrical head screw; 15, intermediate flange; 16, bushing; 17, manual drive shaft; 18, first pin hole; 19, second pin hole; 20, set screw; 21, third single-row deep groove ball bearing; 22, sealing ring; 23, fourth single-row deep groove ball bearing; 24, shaft elastic retaining ring; 25, input bevel gear; 26, second flat key; 27, countersunk screw; 28, pressure plate. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the utility model clearer, the implementation mode of the utility model will be further described below in conjunction with the accompanying drawings.

[0028] The up, down, left, and right in this article are only for the convenience of description. When the device is rotated or at different angles, the corresponding directions will change accordingly.

[0029] Please refer to Figure 1-Figure 3As shown, a dual-drive reducer provided by an embodiment of the utility model comprises: a housing 7, a front flange 2 and a rear flange 11, an intermediate flange 15, a motor input shaft 8, a shaft sleeve 16, a manual drive shaft 17, an output bevel gear 6 and an input bevel gear 25. A cavity penetrating in the left and right directions is provided in the housing 7, and a through hole communicating with the cavity is provided on the lower side of the housing 7; the front flange 2 and the rear flange 11 are respectively fixed to the stoppers provided on the left and right sides of the housing 7 by means of a first hexagon socket head screw 5 and a second hexagon socket head screw 10, and the left and right sides here are only for illustration purposes. The middle flange 15 is fixed to the through hole of the housing 7 by a third hexagon socket head screw 12; the motor input shaft 8 is arranged in the cavity, and the left and right ends of the outer side of the motor input shaft 8 are respectively fixed to the inner wall of the housing 7 and the inner wall of the front flange 2 by two bearings; the upper and lower ends of the sleeve 16 are respectively fixed to the inner wall of the middle flange 15 by two bearings, and the side wall of the sleeve 16 is provided with a mounting hole, and a set screw 20 is installed in the mounting hole; the manual drive shaft 17 is coaxially slidably arranged in the inner hole of the sleeve 16, and the manual drive shaft 17 is provided with a first pin hole 18 spaced up and down. and a second pin hole 19, so that when the manual drive shaft 17 slides, the set screw 20 is selectively threadedly connected with the first pin hole 18 or the second pin hole 19; and, the output bevel gear 6 and the input bevel gear 25 are coaxially fixed on the outer circle of the motor input shaft 8 and the upper end of the manual drive shaft 17, respectively, so that when the set screw 20 is fixed in the first pin hole 18, the output bevel gear 6 is in a meshing state with the input bevel gear 25, and when the set screw 20 is fixed in the second pin hole 19, the output bevel gear 6 is in a disengaged state with the input bevel gear 25.

[0030] The manual drive structure is disconnected and closed by sliding the manual drive shaft 17 in the inner hole of the sleeve 16 and cooperating between the set screw 20 and the first pin hole 18 and the second pin hole 19. When the set screw 20 is set in the second pin hole 19, the input bevel gear 25 and the output bevel gear 6 are in a disengaged state, and at this time, the motor drive can be adopted; when the set screw 20 is set in the first pin hole 18, the input bevel gear 25 and the output bevel gear 6 are in a meshing state, and at this time, the manual drive can be adopted.

[0031] The dual-drive reducer structure has two independent drive systems to cope with emergencies. When the power source is disconnected, the manual drive shaft 17 can manually adjust the reducer rotation angle, thereby adjusting the load displacement to achieve the required working position. The adjustment is simple and convenient, the reliability is strong, and it is relatively labor-saving.

[0032] At the same time, when the motor is driven alone, the manual end is disconnected, which reduces the power loss of the bevel gear meshing and the transmission noise. The manual drive shaft 17 is disconnected and closed by manual operation without the aid of other tools, which greatly reduces the use and operation costs and has strong timeliness.

[0033] The manual drive structure of this structure is easy to operate, can be disconnected, has high efficiency, small size and low noise.

[0034] Furthermore, it also includes a dust cover 13, which is arranged on the outside of the manual drive shaft 17 and is detachably fixed to the lower end of the middle flange 15 by screws. Specifically, the dust cover 13 is fixed to the lower end of the middle flange 15 by a fourth hexagon socket head screw 14.

[0035] The dust cover 13 is detachably provided on the outer side of the manual drive shaft 17 , so as to prevent dust or foreign matter from entering between the manual drive shaft 17 and the shaft sleeve 16 when the manual drive shaft 17 is not in use.

[0036] Specifically, the gear ratio of the input bevel gear 25 to the output bevel gear 6 is 1:2, and the amplified torque is a multiple of the speed ratio. The torque amplification achieves the effect of saving effort for the user during the adjustment process.

[0037] Specifically, there is a clearance fit between the manual drive shaft 17 and the inner hole of the sleeve 16. The clearance fit allows the manual drive shaft 17 and the sleeve 16 to be slidably connected, and also facilitates ensuring the coaxiality between the manual drive shaft 17 and the sleeve 16.

[0038] Furthermore, a sealing ring 22 is provided between the manual drive shaft 17 and the shaft sleeve 16 , and the sealing ring 22 is an O-type sealing ring 22 , which is used to ensure that the grease inside the speed reducer does not leak out.

[0039] Preferably, the bearings fixed outside the motor input shaft 8 and the shaft sleeve 16 are both single-row deep groove ball bearings.

[0040] Specifically, the bearing fixed to the outer side of the motor input shaft 8 and the inner wall of the front flange 2 is the first single-row deep groove ball bearing 3, and the bearing fixed to the inner wall of the housing 7 is the second single-row deep groove ball bearing 9, and the outer ring of the second single-row deep groove ball bearing 9 is also fixedly connected to the inner wall of the rear flange 11. The bearings fixed to the outer side wall of the sleeve 16 are the third single-row deep groove ball bearing 21 and the fourth single-row deep groove ball bearing 23, respectively, wherein the fourth single-row deep groove ball bearing 23 is located at the upper end of the sleeve 16, and the inner ring of the fourth single-row deep groove ball bearing 23 is also provided with a shaft elastic retaining ring 24 for limiting and fixing.

[0041] Further, the external interface at the lower end of the manual drive shaft 17 is a square interface. The square interface is convenient for connection with external pliers or other tools, which is convenient for saving effort when manually rotating the manual drive shaft 17.

[0042] Specifically, the output bevel gear 6 is press-fitted on the outer circle of the motor input shaft 8 and connected to the motor input shaft 8 through the first flat key 4. The motor input shaft 8 is used to connect to an external motor. Specifically, the motor input shaft 8 is coaxially connected to an external load through the third flat key 1.

[0043] Furthermore, the input bevel gear 25 is pressed onto the outer circle of the manual drive shaft 17 and connected to the manual drive shaft 17 via a second flat key 26. The upper end of the manual drive shaft 17 is also provided with a threaded hole and a pressure plate 28. The pressure plate 28 is screwed into the threaded hole and fixed to the manual drive shaft 17 via a countersunk screw 27.

[0044] The input bevel gear 25 can be further fixed by fixing the pressing plate 28 on the upper end of the manual drive shaft 17 to prevent the input bevel gear 25 from being displaced.

[0045] In this document, the directional words such as front, back, top, and bottom are defined by the positions of the components in the drawings and the positions of the components relative to each other, and are only for the sake of clarity and convenience in expressing the technical solution. It should be understood that the use of the directional words should not limit the scope of protection claimed in this application.

[0046] In the absence of conflict, the above embodiments and features in the embodiments may be combined with each other.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A dual-drive reducer, characterized in that: include: A box body, wherein a cavity penetrating in the left and right directions is provided in the box body, and a through hole communicating with the cavity is provided on the lower side of the box body; The front flange and the rear flange are fixed on the left and right sides of the box body respectively; An intermediate flange is fixed at the through hole of the box body; The motor input shaft is arranged in the cavity, and the left and right ends of the outer side of the motor input shaft are respectively fixed to the inner wall of the box body and the inner wall of the front flange through two bearings; A shaft sleeve, the upper and lower ends of which are fixed to the inner wall of the intermediate flange through two bearings respectively, and a mounting hole is provided on the side wall of the shaft sleeve, and a set screw is installed in the mounting hole; A manual drive shaft is coaxially slidably disposed in the inner hole of the shaft sleeve, and a first pin hole and a second pin hole are provided on the manual drive shaft, so that when the manual drive shaft slides, the set screw is selectively threadedly connected with the first pin hole or the second pin hole; as well as, The output bevel gear and the input bevel gear are coaxially fixed on the outer circles of the motor input shaft and the upper end of the manual drive shaft, respectively, so that when the set screw is fixed in the first pin hole, the output bevel gear is in a meshing state with the input bevel gear, and when the set screw is fixed in the second pin hole, the output bevel gear is in a disengaged state with the input bevel gear.

2. The dual-drive reducer according to claim 1, characterized in that: It also includes a dust cover, which is arranged on the outside of the manual drive shaft and is detachably fixed to the lower end of the middle flange by screws.

3. The dual-drive reducer according to claim 1, characterized in that: The gear ratio between the input bevel gear and the output bevel gear is 1:

2.

4. The dual-drive reducer according to claim 1, characterized in that: The manual drive shaft and the inner hole of the shaft sleeve are clearance-fitted.

5. The dual-drive reducer according to claim 4, characterized in that: A sealing ring is arranged between the manual drive shaft and the shaft sleeve.

6. The dual-drive reducer according to claim 2, characterized in that: The bearings fixed outside the motor input shaft and the shaft sleeve are both single-row deep groove ball bearings.

7. The dual-drive reducer according to claim 1, characterized in that: The external interface at the lower end of the manual drive shaft is a square interface.

8. The dual-drive reducer according to claim 1, characterized in that: The output bevel gear is press-fitted onto the outer circle of the motor input shaft and connected to the motor input shaft via a first flat key. The motor input shaft is used to be connected to an external motor.

9. The dual-drive reducer according to claim 1, characterized in that: The input bevel gear is pressed onto the outer circle of the manual drive shaft and connected to the manual drive shaft via a second flat key. A threaded hole and a pressure plate are also provided at the upper end of the manual drive shaft. The pressure plate is screwed into the threaded hole and fixed to the manual drive shaft via a countersunk screw.

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