Vertical parallel shaft speed reducer

Abstract

The utility model discloses a vertical parallel shaft speed reducer, which belongs to the field of speed reducers and comprises a box body, an input shaft and an output shaft are arranged on the box body in parallel, the input shaft and the output shaft are linked through a reduction gear set, the input shaft is linked with an input flange, and the box body is hinged with an output flange and a transparent cover. The output shaft is provided with a first self-aligning roller bearing and a second self-aligning roller bearing in a penetrating mode, a first oil seal is arranged at the joint of the output flange and the output shaft, a second oil seal is arranged at the joint of the transparent cover and the output shaft, a thrust ball bearing is further arranged at the end, close to the transparent cover, of the output shaft, and the output shaft is in threaded connection with a round nut used for fixing the thrust ball bearing. When the output bearing bears a large radial load, the first self-aligning roller bearing and the second self-aligning roller bearing are respectively arranged at the edges of the output shaft and the box body, so that the radial bearing capacity of the output shaft is obviously improved, and the thrust ball bearing is additionally arranged at one end, far away from the output flange, of the output shaft, so that the axial loading capacity of the output shaft can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of speed reducer, concretely relates to a vertical parallel axis speed reducer. BACKGROUND

[0002] The current output shaft of vertical speed reducer usually bears large axial load, but the axial bearing capacity of traditional conical roller bearing is limited, which easily leads to shaft deviation and aggravation of bearing wear, affects transmission accuracy and service life, has poor sealing performance, and lubricant leakage leads to aggravation of gear and bearing wear.

[0003] The utility model discloses a strong parallel axis speed reducer discloses a kind of speed reducer box body, input shaft, first transmission shaft, second transmission shaft and output shaft are horizontally parallel in speed reducer box body, input shaft is reduced transmission first transmission shaft by first gear set, first transmission shaft is reduced transmission second transmission shaft by second gear set, second transmission shaft is reduced transmission output shaft by third gear set, the left side plate of speed reducer box body is fixedly connected with outer-hung support seat at output shaft position, the inner hole of outer-hung support seat is equipped with first conical roller bearing and first radial ball bearing and supports the middle of output shaft, the left side shaft end of output shaft is fixedly connected with load-bearing mounting plate outside speed reducer box body and outer-hung support seat, the right side shaft end of output shaft is supported by second conical roller bearing.

[0004] However, the above-mentioned parallel axis speed reducer still has the following defects:

[0005] First, under heavy load conditions, cracks may occur at the connection between the outer-hung support seat and the box body, the outer-hung support seat and the box body may deviate, the output shaft may bend, deform, fatigue fracture or bearing failure, and the load-carrying capacity and structural stability are poor.

[0006] Second, the speed reducer has poor liquid leakage prevention performance, lubricating oil is easy to leak from the gap between the outer-hung support seat and the bearing, lubricating oil loss is serious, the lubricating capacity of the gear and the bearing is reduced, and the service life of the gear and the bearing is short.

[0007] Therefore, it is necessary to improve the above-mentioned defects. UTILITY MODEL CONTENTS

[0008] The utility model discloses a vertical parallel axis speed reducer with compact structure, high load-carrying capacity and long service life to solve the above problems existing in the prior art.

[0009] To achieve the above object, the utility model adopts the technical scheme: a vertical parallel axis speed reducer, including the box, the box is provided with input shaft and output shaft in parallel, the input shaft and the output shaft are linked through the speed reducing gear group, the input shaft is linked with the input flange, the box is hinged with the output flange at one end of the output shaft and is hinged with the transparent cover at the other end, the output shaft is provided with the first aligning roller bearing and the second aligning roller bearing, the output flange is equipped with the first oil seal at the connecting place with the output shaft, the transparent cover is equipped with the second oil seal at the connecting place with the output shaft, the output shaft is still equipped with the thrust ball bearing at one end close to the transparent cover, and the output shaft is threadedly connected with the round nut for fixing the thrust ball bearing.

[0010] Through adopting the above technical scheme: the box output surface and the output flange are connected through the bolt, the output flange is connected with the customer equipment, the output flange is flared and can provide greater contact area and stronger connection strength, effectively reduces the risk of loosening or fracture in the transmission process, can ensure that the flange is connected with the load equipment with high concentricity, the first oil seal and the second oil seal can seal the connecting place of the output shaft and the box, prevent the lubricating oil in the box from seeping out of the gap, in addition, when the output bearing bears large radial load, the first aligning roller bearing and the second aligning roller bearing are arranged at the edge of the output shaft and the box respectively, the radial bearing capacity of the output shaft is significantly improved, the thrust ball bearing is installed at one end of the output shaft away from the output flange, the axial load capacity of the output shaft is improved, the round nut is threadedly connected on the output shaft, the thrust ball bearing is fixed and limited, the thrust ball bearing can keep the relative position stable, at the same time, the round nut can be quickly tightened or loosened by using tools such as wrench, the installation and dismounting process of the output shaft and each bearing is simplified, the maintenance cost of the speed reducer is reduced, in addition, the first aligning roller bearing, the second aligning roller bearing and the thrust ball bearing cooperate with each other, so that the speed reducer can load larger weight, the load of the speed reducer is evenly distributed, the service life and performance of each bearing are improved.

[0011] The vertical parallel axis speed reducer can be further provided with: the transparent cover is provided with a mounting cylinder on the end face away from the box, the thrust ball bearing is arranged in the mounting cylinder, the mounting cylinder side wall is provided with a limiting bolt, a pressing plate for abutting against the first oil seal is arranged between the thrust ball bearing and the transparent cover, a stop washer is arranged between the round nut and the thrust ball bearing, the output flange is provided with an oil seal baffle arranged on the output rod at the first oil seal, and the transparent cover is hinged with a protective cover covering the output shaft.

[0012] By adopting the technical scheme, the installation cylinder inner diameter is larger than the diameter of the thrust ball bearing, the outer ring of the thrust ball bearing can be attached to the inner wall of the installation cylinder, the thrust ball bearing is axially limited by the installation cylinder when being arranged on the output shaft, and the output rod is axially limited, so that the axial deviation of the output rod can be effectively prevented, in addition, the pressing plate can prevent the thrust ball bearing and the transparent cover from being rubbed, and can press and fix the first oil seal, the oil seal baffle can press the second oil seal, and the installation efficiency and stability of the first oil seal and the second oil seal are improved, so that the first oil seal and the second oil seal can be better fixed and pressed, the first oil seal and the second oil seal are prevented from loosening or leaking during use, and the normal operation of the mechanical equipment and the service life are ensured, the protective cover covers the outer side of the transparent cover, the output shaft end and the transparent cover are shielded, external dust can be prevented from entering the thrust ball bearing, the bearing can maintain stable performance under various working conditions, the operation efficiency of the whole machine is improved, and the downtime caused by bearing failure is reduced.

[0013] The vertical parallel shaft speed reducer can be further provided with an output shaft sleeve provided with a sleeve for positioning, one end of the first self-aligning roller bearing abutting against the output flange end face and the other end abutting against the second circular nut end face, the output shaft being provided with a positioning step, one end of the second self-aligning roller bearing abutting against the transparent cover end face and the other end abutting against the positioning step end face.

[0014] By adopting the technical scheme, the output flange and the output shaft sleeve can install and fix the first self-aligning roller bearing, the transparent cover and the positioning step can fix and support the second self-aligning roller bearing, the first self-aligning roller bearing can bear the axial force from the output flange and the circular nut, and the second self-aligning roller bearing can bear the axial force from the transparent cover and the positioning step, so that the axial positioning of the output shaft is further ensured, the axial and radial runout is effectively reduced, and the transmission accuracy and structural stability are improved.

[0015] The vertical parallel shaft speed reducer can be further provided with an oil supplement hole being formed in the side wall of the box body, an oil supplement pipe being arranged in the oil supplement hole, and an oil supplement tank being connected with the oil supplement pipe and provided with an oil mirror on the side wall for observing the oil in the oil supplement tank.

[0016] By adopting the technical scheme, the internal lubricating oil is continuously reduced when the speed reducer is running, the oil supplement tank is connected with the oil supplement pipe on the side of the box body, the height of the oil supplement tank is slightly higher than that of the box body, the oil level of the whole speed reducer is increased, the lubricating oil in the oil supplement tank can automatically supplement the box body, the internal gear set and the bearing of the speed reducer can be effectively lubricated in the case of vertical installation, the oil mirror is arranged on the side of the oil supplement tank, the oil level of the lubricating oil in the oil supplement tank can be observed through the oil mirror in real time, the lubricating oil can be conveniently supplemented, the risk of equipment failure caused by insufficient oil is reduced, and the reliability of equipment operation and the convenience of maintenance are enhanced.

[0017] The vertical parallel shaft speed reducer can be further provided with a ventilation hole in the side wall of the input flange, a ventilation pipe connected to the ventilation hole, the ventilation pipe being connected to one end of the oil supplement tank away from the oil supplement pipe, and the oil supplement tank being provided with an oil supplement hole, and an air vent cap for air exhaust being arranged on the oil supplement hole.

[0018] By adopting the above technical scheme, when the speed reducer continuously operates at high temperature or high intensity, the temperature inside the speed reducer increases, the lubricating oil and grease inside the speed reducer and the input flange vaporize, the internal air pressure continuously increases, and the oil seal or the connection is easily damaged. Since the speed reducer is vertically installed, the gas drifts to the input flange located above the tank body, enters the oil supplement tank through the ventilation hole and the ventilation pipe in the side of the input flange, can exert a certain pressure on the oil in the oil supplement tank, improves the oil supplement capacity of the oil supplement tank to the tank body, and can open the air vent cap on the oil supplement hole when the internal air pressure reaches a threshold value, thereby exhausting and relieving the pressure in the speed reducer, preventing the internal air pressure from being too high, and protecting the sealing structure of the speed reducer.

[0019] The utility model discloses the beneficial effects are:

[0020] First, the first aligning roller bearing, the second aligning roller bearing and the thrust ball bearing are arranged on the output shaft of the speed reducer, which can effectively bear the composite load and optimize the load distribution. When bearing large radial load, the radial bearing capacity of the first aligning roller bearing and the second aligning roller bearing is higher, and the better effect is played. When bearing axial load, the thrust ball bearing plays a role. In this way, the bearing capacity of the two kinds of bearings can be fully utilized, and the load is reasonably distributed. The first oil seal and the second oil seal arranged at the connection between the output shaft, the output flange and the transparent cover can improve the sealing structure of the speed reducer, prevent the lubricating oil in the tank body from leaking from the connection between the output shaft and the tank body, and prevent dust or rainwater from entering the thrust ball bearing. The protective cover is hinged to the thrust ball bearing, which can prevent dust or rainwater from entering the thrust ball bearing, maintain the stable performance of the thrust ball bearing, improve the operation efficiency of the whole speed reducer, and prolong the service life and performance of the bearing.

[0021] Second, the speed reducer is connected with the oil supplement tank. The oil supplement tank increases the oil level of the whole machine, so that the internal gear and bearing of the speed reducer can be effectively lubricated when the speed reducer is vertically installed. The oil supplement tank can continuously supplement the lubricating oil in the tank body, and the oil level in the oil supplement tank can be observed through the oil mirror on the side of the oil supplement tank, so that the continuous supplement of the lubricating oil in the tank body is ensured. In addition, to prevent the sealing from being reduced due to excessive internal air pressure of the tank body, the air vent cap is installed on the oil supplement tank to balance the internal and external air pressure and reduce the risk of oil leakage of the speed reducer.

[0022] The utility model will be further explained in detail in combination with the drawings and examples. DRAWINGS

[0023] Fig. 1The utility model discloses a speed reducer's structure schematic drawing;

[0024] Fig. 2 The utility model discloses a speed reducer's structure schematic drawing;

[0025] Fig. 3 The utility model discloses a speed reducer's structure schematic drawing;

[0026] Label comment: box 1, input flange 11, output flange 12, transparent cover 13, installation cylinder 14, limit bolt 15, protective cover 16, input shaft 2, output shaft 3, first aligning roller bearing 31, second aligning roller bearing 32, first oil seal 33, second oil seal 34, thrust ball bearing 35, round nut 36, shaft sleeve 37, positioning step 38, pressing plate 4, stop washer 5, oil seal baffle 6, oil supplement tank 7, oil supplement pipe 71, oil mirror 72, breather pipe 73, breather cap 74. DETAILED DESCRIPTION

[0027] The technical scheme in the embodiments of the utility model will be clearly and completely described below, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making the creative labor belong to the range of the utility model protection.

[0028] Embodiment one: as Figs. 1 to 3The vertical parallel axis speed reducer shown comprises a box body 1, the box body 1 is provided with an input shaft 2 and an output shaft 3 in parallel, the input shaft 2 and the output shaft 3 are linked through a speed reduction gear set, the input shaft 2 is linked with an input flange 11, the box body 1 is hinged with an output flange 12 at one end of the output shaft 3 and a transparent cover 13 at the other end, the output shaft 3 is provided with a first self-aligning roller bearing 31 and a second self-aligning roller bearing 32, the output flange 12 is provided with a first oil seal 33 at the connection with the output shaft 3, the transparent cover 13 is provided with a second oil seal 34 at the connection with the output shaft 3, the output shaft 3 is further provided with a thrust ball bearing 35 at the end close to the transparent cover 13, the output shaft 3 is screwed with a round nut 36 for fixing the thrust ball bearing 35, the transparent cover 13 is provided with a mounting cylinder 14 on the end face away from the box body 1, the thrust ball bearing 35 is arranged in the mounting cylinder 14, the mounting cylinder 14 is provided with a limiting bolt 15, a pressing plate 4 is arranged between the thrust ball bearing 35 and the transparent cover 13 for pressing against the first oil seal 33, a stop washer 5 is arranged between the round nut 36 and the thrust ball bearing 35, the output flange 12 is provided with an oil seal baffle 6 at the first oil seal 33, the transparent cover 13 is hinged with a protective cover 16 covering the output shaft 3, the output shaft 3 is sleeved with a shaft sleeve 37 for positioning, one end of the first self-aligning roller bearing 31 abuts against the end face of the output flange 12 and the other end abuts against the end face of the second round nut 36, the output shaft 3 is provided with a positioning step 38, one end of the second self-aligning roller bearing 32 abuts against the end face of the transparent cover 13 and the other end abuts against the end face of the positioning step 38.

[0029] The output face of the box body 1 is coupled with the output flange 12 through bolts, the output flange 12 serves as a connecting piece with customer equipment, the output flange 12 is flared to provide a larger contact area and stronger connection strength, effectively reducing the risk of loosening or breaking during transmission, ensuring high concentricity connection of the flange with the load equipment, the first oil seal 33 and the second oil seal 34 can seal the connection between the output shaft 3 and the box body 1, preventing the lubricating oil in the box body 1 from leaking out of the gap, when the output shaft 3 bears a large radial load, the first self-aligning roller bearing 31 and the second self-aligning roller bearing 32 are arranged at the edges of the output shaft 3 and the box body 1 respectively, significantly improving the radial load capacity of the output shaft 3, the thrust ball bearing 35 is installed at the end of the output shaft 3 away from the output flange 12, improving the axial load capacity of the output shaft 3, the round nut 36 is screwed on the output shaft 3, fixing and limiting the thrust ball bearing 35, the thrust ball bearing 35 can maintain stable relative position, and the round nut 36 can be quickly tightened or loosened by a wrench, simplifying the installation and disassembly process of the output shaft 3 and various bearings, reducing the maintenance cost of the speed reducer, in addition, the first self-aligning roller bearing 31, the second self-aligning roller bearing 32 and the thrust ball bearing 35 cooperate with each other to enable the speed reducer to load a larger weight, the load of the speed reducer is evenly distributed, improving the life and performance of the bearings.

[0030] The outer ring of the thrust ball bearing 35 can be attached to the inner wall of the cylinder 14. The thrust ball bearing 35 is axially limited by the cylinder 14 when it is installed through the output shaft 3, and at the same time, the output shaft 3 is axially limited, which can effectively prevent the output shaft 3 from being axially offset. In addition, the pressing plate 4 can prevent the thrust ball bearing 35 and the transparent cover 13 from rubbing, and can press and fix the first oil seal 33. The oil seal baffle 6 can press the second oil seal 34, which improves the installation efficiency and stability of the first oil seal 33 and the second oil seal 34, and can better fix and press the first oil seal 33 and the second oil seal 34, preventing the first oil seal 33 and the second oil seal 34 from loosening or leaking during use, thereby ensuring the normal operation of the mechanical equipment and prolonging the service life. The cover 16 covers the outer side of the transparent cover 13, which can shield the end of the output shaft 3 and the transparent cover 13, reduce the entry of external dust into the thrust ball bearing 35, and ensure that the bearing can maintain stable performance under various working conditions, improve the overall mechanical operation efficiency, and reduce the downtime caused by bearing failure.

[0031] The shaft sleeve 37 and the output flange 12 can install and fix the first aligning roller bearing 31, and the positioning step 38 and the transparent cover 13 can fix and support the second aligning roller bearing 32. The first aligning roller bearing 31 can bear the axial force from the output flange 12 and the circular nut 36, and the second aligning roller bearing 32 can bear the axial force from the transparent cover 13 and the positioning step 38, further ensuring the axial positioning accuracy of the output shaft 3, effectively reducing the axial and radial runout, and improving the transmission accuracy and structural stability.

[0032] Example two: based on example one, the difference between example two and example one is that the side wall of the box body 1 is provided with an oil supplementing hole, an oil supplementing pipe 71 is arranged in the oil supplementing hole, the oil supplementing pipe 71 is connected with an oil supplementing tank 7, an oil mirror 72 for observing the oil in the oil supplementing tank 7 is arranged on the side wall of the oil supplementing tank 7, an air vent hole is arranged in the side wall of the input flange 11, an air vent pipe 73 is connected with the air vent hole, the air vent pipe 73 is connected to the end of the oil supplementing tank 7 away from the oil supplementing pipe 71, and the oil supplementing tank 7 is provided with an oil supplementing hole, and an air vent cap 74 for air exhaust is arranged on the oil supplementing hole.

[0033] When the speed reducer is running, the internal lubricating oil will continuously decrease. By connecting the oil supplementing tank 7 to the side of the box body 1 through the oil supplementing pipe 71, the height of the oil supplementing tank 7 is slightly higher than that of the box body 1, which increases the oil level of the whole speed reducer. The lubricating oil in the oil supplementing tank 7 can automatically supplement the box body 1, so that the internal gear set and bearing of the speed reducer can also be effectively lubricated in the case of vertical installation. At the same time, the oil mirror 72 is arranged on the side of the oil supplementing tank 7, which can observe the oil level of the lubricating oil in the oil supplementing tank 7 through the oil mirror 72, realize convenient supplement of the lubricating oil, reduce the risk of equipment failure caused by insufficient oil, and enhance the reliability of equipment operation and the convenience of maintenance.

[0034] When the speed reducer is continuously operated at high temperature or high intensity, the temperature inside the speed reducer is increased, which causes the lubricating oil and grease inside the speed reducer and the input flange 11 to be gasified, the internal gas pressure is continuously increased, and the oil seal or the connection is easily damaged. Since the speed reducer is vertically installed, the gas is floated to the input flange 11 located above the box body 1, enters the oil supplement tank 7 through the air vent hole and the air vent pipe 73 on the side of the input flange 11, can exert a certain pressure on the oil liquid of the oil supplement tank 7, improves the oil supplement capacity of the oil supplement tank 7 to the box body 1, can open the air vent cap 74 on the oil supplement hole when the internal gas pressure reaches a threshold value, thereby discharges the gas and releases the pressure of the speed reducer, prevents the internal gas pressure from being too high, and protects the sealing structure of the speed reducer.

[0035] The above-mentioned embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but it cannot be understood as the limitation of the utility model patent range. It should be pointed out that for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the utility model, and these all belong to the protection range of the utility model.

Claims

1. A vertical parallel axis speed reducer comprising a housing, the housing being provided in parallel with an input shaft and an output shaft, the input shaft and the output shaft being linked by a speed reduction gear set, characterized in that: The input shaft is linked with an input flange, the box is hinged with an output flange at one end of the output shaft and a transparent cover at the other end, the output shaft is provided with a first self-aligning roller bearing and a second self-aligning roller bearing, the output flange is provided with a first oil seal at the connection with the output shaft, the transparent cover is provided with a second oil seal at the connection with the output shaft, the output shaft is further provided with a thrust ball bearing near the transparent cover, and the output shaft is threadedly connected with a round nut for fixing the thrust ball bearing.

2. A vertical parallel axis speed reducer according to claim 1, characterized in that: The transparent cover is provided with a mounting cylinder at the end face away from the box, the thrust ball bearing is arranged in the mounting cylinder, the mounting cylinder is provided with a limiting pin, the transparent cover is provided with a pressing plate for abutting against the first oil seal, the round nut is provided with a stop washer, the output flange is provided with an oil seal baffle plate arranged on the output rod at the first oil seal, and the transparent cover is hinged with a protective cover covering the output shaft.

3. A vertical parallel axis speed reducer according to claim 2, characterized in that: The output shaft is provided with a shaft sleeve for positioning, one end of the first self-aligning roller bearing is in abutment with the end face of the output flange, the other end is in abutment with the end face of the second round nut, the output shaft is provided with a positioning step, one end of the second self-aligning roller bearing is in abutment with the end face of the transparent cover, and the other end is in abutment with the end face of the positioning step.

4. A vertical parallel axis speed reducer according to any one of claims 1 to 3, characterized in that: The box is provided with an oil supplement hole in the side wall, the oil supplement hole is provided with an oil supplement pipe, the oil supplement pipe is connected with an oil supplement tank, and the oil supplement tank is provided with an oil mirror on the side wall for observing the oil in the oil supplement tank.

5. A vertical parallel axis speed reducer as claimed in claim 4, characterized in that: The input flange is provided with a vent hole in the side wall, the vent hole is connected with a vent pipe, the vent pipe is connected to the end of the oil supplement tank away from the oil supplement pipe, the oil supplement tank is provided with an oil supplement hole, and the oil supplement hole is provided with a vent cap for venting.

Images