CN214063682U - External tooth rotary driver with braking symmetric support - Google Patents

Abstract

The utility model discloses an area braking symmetric support's external tooth gyration driver belongs to the engineering machine tool field. The utility model comprises a power element, a braking device and a base which are connected in sequence, wherein a driving gear and an external tooth slewing bearing are arranged in the base, and the braking device drives the external tooth slewing bearing to work through the driving gear; a plurality of bearing holes are symmetrically formed in the base by taking the central shaft of the driving gear as a symmetry line, and the upper supporting bearing and the lower supporting bearing are symmetrically arranged in the bearing holes by taking the central shaft of the driving gear as a symmetry line. The driving gear of the utility model is symmetrically fixed on the base, so that the driving gear can bear larger tangential force and radial force under the same tooth width, and meanwhile, the output shaft of the power element is prevented from being impacted by the radial force; the braking device can brake the rotary driver in time after the power element stops working, so that the impact of load rotation inertia on the power element is avoided, the power element is effectively protected, and the service life of the rotary driver is greatly prolonged.

Description

External tooth rotary driver with braking symmetric support

Technical Field

The utility model belongs to the technical field of engineering machine tool and specifically relates to an area braking symmetry supporting's external tooth rotary actuator that says so.

Background

The rotary driver is a common device in engineering machinery, and is an essential part in the engineering machinery accessory industry. The prior rotary drive on the market mainly adopts a transmission mode of a turbine worm pair, and has the advantages of strong braking self-locking capability and reliable impact-resistant structure of the turbine worm pair; the defects of the device are that the transmission efficiency is low, the abrasion of the turbine and the worm is quick, the service life is short, and the use cost of a user is too high. Therefore, the rotary drive in the form of gear transmission gradually replaces the rotary drive of a turbine worm pair in the field of engineering machinery. The existing gear transmission type rotary drive mainly comprises a driving gear cantilever type, a driving gear asymmetric support type and the like, and the main problems of the rotary drive are the defects of tooth breakage of the driving gear, breakage of an output shaft of a power element, eccentric wear of a sealing piece of the power element, oil leakage and the like in the use process due to large load variation of a rotary driver.

Although the gear-meshing type rotary driver improves the transmission efficiency, the gear-meshing type rotary driver loses the braking self-locking capacity, and potential safety hazards such as vehicle sliding and the like can occur due to the fact that the load inertia of the rotary driver is large.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved by the utility model

Broken tooth of driving gear, power component output shaft fracture and can appear swift current car scheduling problem to current slewing drive ware appearance, the utility model discloses a take braking symmetric support's external tooth slewing drive ware improves current slewing drive ware, makes it have reliable whole symmetric support structure, also can avoid the broken tooth of driving gear when bearing great load, has improved slewing drive ware's life, can not only improve transmission efficiency, still has braking self-locking function simultaneously, has solved potential safety hazards such as gear engagement gyration drive swift current car in the past.

2. Technical scheme

In order to achieve the above purpose, the utility model provides a technical scheme does:

an external tooth rotary driver with a braking symmetric support comprises a power element, a braking device and a base which are sequentially connected, wherein a driving gear and an external tooth rotary support are installed in the base, and the braking device drives the external tooth rotary support to work through the driving gear; a plurality of bearing holes are symmetrically formed in the base by taking the central axis of the driving gear as a symmetry line, and the upper supporting bearing and the lower supporting bearing are symmetrically arranged in the bearing holes by taking the central axis of the driving gear as a symmetry line; an integral symmetrical supporting structure is formed, so that broken teeth of the driving gear can be avoided when a large load is borne, and the service life of the rotary driver is prolonged; the driving gear is symmetrically fixed on the base by the upper supporting bearing and the lower supporting bearing, so that the driving gear can bear larger tangential force and radial force under the same tooth width, meanwhile, the impact of the radial force on an output shaft of the power element is avoided, the power element is protected by the braking device, the power element is not directly impacted by load, and the service life of the power element is prolonged.

According to the further technical scheme, the mounting numbers of the upper supporting bearing and the lower supporting bearing are consistent; the upper bearing is mounted in a bearing hole close to the braking device, and the lower bearing is mounted in a bearing hole far away from the braking device.

According to the further technical scheme, the upper supporting bearing and the lower supporting bearing are rolling bearings or sliding bearings capable of bearing radial loads, and the device is convenient to use and maintain, reliable in work and good in starting performance.

According to the technical scheme, one end, fixed with an upper supporting bearing, of the driving gear is in key connection with the braking device, one end, fixed with a lower supporting bearing, of the driving gear is covered with an end cover, the end cover is fixed on the base through bolts, and the driving gear is fixed on the base.

According to the technical scheme, the boss is arranged on the outer tooth slewing bearing, the boss between the base and the outer tooth slewing bearing is sealed through the radial rotary sealing element, a fully-closed structure is formed, lubricating oil and lubricating grease in the slewing drive are prevented from overflowing, the use and maintenance cost of the slewing drive is saved, and the pollution of oil stains to the environment is reduced.

According to the further technical scheme, the radial rotary sealing element is a rotary shaft lip-shaped sealing ring and is provided with a flexible lip, and radial force is applied to the shaft by a sealing cutting edge with a spring to prevent lubricating oil from leaking.

According to the further technical scheme, the brake device is connected with the driving gear in a key mode, the driving gear is connected with the outer tooth slewing bearing in a rotating mode, the power element transmits torque to the brake device through the key connection, and the brake device drives the driving gear to rotate through the key connection, so that the outer tooth slewing bearing is further driven to work.

According to the further technical scheme, the brake device is a wet-type multi-disc brake or a dry-type multi-disc brake, has a brake self-locking function, and solves the potential safety hazards of the conventional gear meshing rotation driving sliding vehicle and the like.

In a further technical scheme, the power element is a pneumatic motor, a hydraulic motor or an electric motor, the size is small, the weight is light, the starting torque is large, and the load can be driven to work.

3. Advantageous effects

Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:

(1) the utility model discloses an external tooth rotary drive ware of area braking symmetric support adopts whole symmetrical support structure, makes the driving gear can bear bigger tangential force and radial force under equal tooth width, also can avoid the broken tooth of driving gear when bearing great load, has improved rotary drive ware's life; the power element is protected by the integral symmetrical structure, so that the power element is not directly impacted by load, and the service life of the power element is prolonged.

(2) The utility model discloses an external tooth rotary driver with brake symmetrical support, which utilizes the brake device to provide effective brake self-locking function, and solves the potential safety hazards of gear meshing rotary driving sliding vehicle and the like; and the braking device can brake the rotary driver in time, so that the impact of load rotation inertia on the power element is avoided, the power element is effectively protected, and the service life of the rotary driver is greatly prolonged.

(3) The utility model discloses an area braking symmetric support's external tooth rotary actuator has installed radial rotary seal spare for this rotary actuator is a totally enclosed structure, has avoided inside lubricating oil, the lubricating grease of rotary actuator to spill over, has saved rotary actuator and has used the maintenance cost, has reduced the pollution to the environment simultaneously.

(4) The utility model discloses an external tooth rotary drive ware of area braking symmetry supporting, rotation axis lip seal circle has flexible lip, usually by a metal framework support, leans on the sealed blade to exert to the axle with radial force, prevents the leakage of lubricating oil; and the rotary driver can prevent the invasion of substances such as external dust, muddy water and the like, thereby excellently protecting the rotary driver from being damaged.

(5) The utility model discloses a take external tooth rotary actuator of braking symmetric support, with slide bearing comparison, antifriction bearing's radial dimension is great, can bear bigger radial load.

(6) The utility model discloses an area braking symmetric support's external tooth rotary actuator through end cover or round pin axle with the more firm installation on the base of driving gear.

(7) The utility model discloses an area braking symmetric support's external tooth gyration driver, power component is small, light in weight, and the starting torque is big, can drive load work.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: 1. a power element; 2. a braking device; 3. a clamp spring; 4. an upper support bearing; 5. a base; 6. a driving gear; 7. a lower support bearing; 8. an end cap; 9. a radially rotating seal; 10. and the external tooth slewing bearing.

Detailed Description

For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings.

Example 1

The external tooth slewing drive with the braking symmetric support of the embodiment comprises a power element 1, a braking device 2 and a base 5 which are sequentially connected, wherein a driving gear 6 and an external tooth slewing support 10 are installed in the base 5, and the braking device 2 drives the external tooth slewing support 10 to work through the driving gear 6; a plurality of bearing holes are symmetrically formed in the base 5 by taking the central axis of the driving gear 6 as a symmetry line, and the upper bearing 4 and the lower bearing 7 are symmetrically arranged in the bearing holes in the base 5 by taking the central axis of the driving gear 6 as a symmetry line.

The power element 1 and one end of the braking device 2 are fixed together through a bolt, the power element and the braking device are connected through a key, the other end of the braking device 2 is fixed on the base 5 through a bolt, the other end of the braking device 2 is connected with a driving gear 6 in a key mode, the driving gear 6 is rotatably connected with the external tooth slewing bearing 10, the power element 1 transmits torque to the external tooth slewing bearing 10 through the braking device 2 through the driving gear 6, and the external tooth slewing bearing 10 drives a load to work.

The working principle is as follows: the power element 1 transmits torque to the braking device 2 through key connection, and the braking device 2 drives the driving gear 6 to rotate through key connection, so that the load on the external tooth slewing bearing 10 is further driven to work. When the load reaches the station, the power element 1 stops working, the braking device 2 performs braking, and the spring in the braking device 2 drives the friction plate and the braking plate to work to form braking for the rotary driver.

In addition, a plurality of bearing holes formed in the base 5 are symmetrically distributed by taking the central axis of the driving gear 6 as a symmetrical line, the upper support bearing 4 and the lower support bearing 7 are directly installed in the bearing holes in the base 5, and the installation numbers of the upper support bearing 4 and the lower support bearing 7 are consistent; the upper supporting bearing 4 is arranged in a bearing hole close to the braking device 2, the lower supporting bearing 7 is arranged in a bearing hole far away from the braking device 2, the upper supporting bearing 4, the base 5 and the lower supporting bearing 7 form a whole, the driving gear 6 is symmetrically fixed on the base 5 by the snap spring 3, the upper supporting bearing 4 and the lower supporting bearing 7 to form a whole symmetrical supporting structure, and the snap spring 3 is positioned between the upper supporting bearing 4 and the base 5.

The integral symmetrical supporting structure is adopted, so that the driving gear 6 can bear larger tangential force and radial force under the same tooth width, the tooth breakage of the driving gear 6 can be avoided when bearing larger load, and the service life of the rotary driver is prolonged; and the power element 1 is protected by the integral symmetrical structure, the impact of the radial force on the output shaft of the power element 1 is avoided, and the service life of the power element 1 is prolonged. The braking device 2 can brake the rotary driver in time after the power element 1 stops working, and meanwhile, the impact of load rotation inertia on the power element 1 is avoided, the power element 1 is effectively protected, and the service life of the rotary driver is greatly prolonged.

Example 2

The basic structure of the external tooth rotary driver with the braking symmetric support of the embodiment is the same as that of the embodiment 1, and the differences and improvements are that: as shown in fig. 1, the upper support bearing 4 and the lower support bearing 7 are rolling bearings or sliding bearings capable of bearing radial loads.

The sliding bearing, a bearing working under sliding friction, works stably and reliably without noise.

The rolling bearing is used for supporting a rotating shaft and parts on the shaft, and keeping the normal working position and the rotating precision of the shaft, and the rolling bearing is convenient to use and maintain, reliable in work, good in starting performance and high in bearing capacity at medium speed.

The radial dimension of the rolling bearing is large as compared with the sliding bearing. Therefore, in order to make the rotary drive capable of bearing larger radial load, the upper support bearing 4 and the lower support bearing 7 in the present embodiment each use a rolling bearing capable of bearing radial load.

Example 3

The basic structure of the external tooth rotary driver with the braking symmetric support of the embodiment is the same as that of the embodiment 2, and the differences and improvements are as follows: as shown in fig. 1. The driving gear 6 is fixed with the one end of upper support bearing 4 and 2 key-type connections of arresting gear, and the one end that is fixed with lower support bearing 7 is stamped the end cover 8, and the end cover 8 passes through the bolt fastening on base 5, can further fix driving gear 6 to fix driving gear 6 on base 5 more firmly.

Since the lower support bearing 7 is also fixed to the base 5, the end cap 8 can also be replaced by a pin: the base 5 is provided with a pin shaft hole, the outer ring of the lower supporting bearing 7 is fixed in the inner hole of the driving gear 6, the inner ring of the lower supporting bearing 7 is arranged on the pin shaft, and the pin shaft is fixed in the pin shaft hole of the base 5 to replace the end cover 8 and fix the driving gear 6.

Example 4

The basic structure of the external tooth rotary driver with the braking symmetric support of the embodiment is the same as that of the embodiment 3, and the differences and improvements are that: as shown in fig. 1, the outer tooth slewing bearing 10 is provided with a boss, and the boss between the base 5 and the outer tooth slewing bearing 10 is sealed by the radial rotary sealing element 9, so that the slewing drive forms a totally-enclosed structure, thereby avoiding the overflow of lubricating oil and lubricating grease in the slewing drive, saving the use and maintenance cost of the slewing drive, and simultaneously reducing the pollution of oil stains to the environment.

Further, the radial rotary seal 9 is a rotary shaft lip seal, including but not limited to a seal with a sub-lip inner-wrapping skeleton.

Rotating shaft lip seals, commonly referred to as oil seals, have flexible lips, usually supported by a metal backbone, which are urged radially against the shaft by seal lips to prevent leakage of lubricating oil; and the rotary driver can prevent the invasion of substances such as external dust, muddy water and the like, thereby excellently protecting the rotary driver from being damaged.

The rotating shaft lip-shaped sealing ring is simple in structure, easy to manufacture, easy to disassemble, convenient to overhaul, light in weight and low in material consumption, the simple rotating shaft lip-shaped sealing ring can be molded at one time, and even if the most complex oil seal is adopted, the manufacturing process is not complex. The metal framework oil seal can form the required oil seal by metal and rubber only through the engineering processes of stamping, gluing, embedding, mould pressing and the like; each oil seal is a combination of a thin-walled metal member and a rubber member, and the material consumption is extremely low, so that each oil seal is light in weight and inexpensive. And by the choice of materials it can be adapted to the specific temperature and medium conditions. The rotating shaft lip-shaped sealing ring has smaller torque ratio, can allow certain shaft eccentricity and can adapt to higher rotating speed (the peripheral speed can reach 30 m/s). And the sealing performance is better, not only can prevent the leakage of lubricating oil at the bearing part, but also can prevent water, dust and other harmful substances from invading from the outside.

Example 5

The basic structure of the external tooth rotary driver with the braking symmetric support of the embodiment is the same as that of the embodiment 4, and the differences and improvements are as follows: as shown in fig. 1, the braking device 2 is a wet-type multi-disc brake or a dry-type multi-disc brake.

A brake is a device having a function of decelerating, stopping, or maintaining a stopped state of a moving member, and is a mechanical part that stops or decelerates a moving member in a machine, and is commonly called a brake or a gate. The brake mainly comprises a braking frame, a braking piece, an operating device and the like. Some brakes are also equipped with automatic adjustment of the brake clearance. To reduce the braking torque and the structural size, the brake is usually mounted on the high-speed shaft of the device.

Furthermore, the braking device 2 in the embodiment also has a braking self-locking function, and the braking device 2 can brake the rotary driver in time after the power element 1 stops working, so that the potential safety hazards of the conventional gear meshing rotary driving sliding vehicle and the like are solved. Meanwhile, the impact of load rotation inertia on the power element 1 is avoided, the power element 1 is effectively protected, and the service life of the rotary driver is greatly prolonged.

Example 6

The basic structure of the external tooth rotary driver with the braking symmetric support of the embodiment is the same as that of the embodiment 5, and the differences and improvements are that: as shown in fig. 1, the power element 1 is a pneumatic motor, a hydraulic motor or an electric motor.

The pneumatic motor is a device for converting the pressure energy of compressed air into rotational mechanical energy, and outputs torque to drive the mechanism to rotate. The pneumatic motor has the advantages of small volume, simple structure, high generated power, higher adaptability, smaller temperature rise and long service life, and is not influenced by severe environments such as dustiness, humidity, dirt and the like. The rotating speed of the pneumatic motor can be changed along with the load, the pneumatic motor is particularly suitable for occasions with frequent starting, the reversing is very easy, and the quick starting and the quick stopping can be realized. The starting torque is large, the belt-loaded starting can be well realized, the stepless speed regulation is simple, the speed is from zero to the maximum, and the operation is flexible. The safety performance of the pneumatic motor is high, and dangerous factors such as sparks, overheating, explosion, short circuit and the like cannot be generated.

The hydraulic motor is also called as an oil motor, outputs torque to drive a mechanism to rotate, and has the advantages of small volume, light weight, simple structure, good manufacturability, insensitivity to oil pollution, impact resistance, small inertia and the like.

The motor also outputs torque to drive the mechanism to rotate, can run at low speed and high power, and can save a speed reducer to directly drive a large load; the motor has all the advantages of the traditional direct current motor, and simultaneously, the structures of a carbon brush and a slip ring are eliminated; the torque characteristic is excellent, the medium and low speed torque performance is good, the starting torque is large, and the starting current is small; stepless speed regulation, wide speed regulation range and strong overload capacity; small volume, light weight and large output force; the soft start and soft stop have good braking characteristics, and the original mechanical braking or electromagnetic braking device can be saved; the efficiency is high, the motor has no excitation loss and carbon brush loss, the multi-stage speed reduction loss is eliminated, the comprehensive power saving rate can reach 20-60%, and the acquisition cost is recovered one year only by saving electricity; the reliability is high, the stability is good, the adaptability is strong, and the maintenance is simple; the vibration and the jolt are resisted, the noise is low, the vibration is small, the operation is smooth, and the service life is long; no radio interference, no spark and high safety.

The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.

Claims (9)

1. The utility model provides an area braking symmetric bearing's external tooth gyration driver which characterized in that: the brake device comprises a power element (1), a brake device (2) and a base (5) which are sequentially connected, wherein a driving gear (6) and an external tooth slewing bearing (10) are installed in the base (5), and the brake device (2) drives the external tooth slewing bearing (10) to work through the driving gear (6); a plurality of bearing holes are symmetrically formed in the base (5) by taking the central shaft of the driving gear (6) as a symmetry line, and the upper supporting bearing (4) and the lower supporting bearing (7) are symmetrically arranged in the bearing holes by taking the central shaft of the driving gear (6) as a symmetry line.

2. The external tooth rotary drive with braking symmetrical support of claim 1, characterized in that: the mounting numbers of the upper support bearing (4) and the lower support bearing (7) are consistent; the upper supporting bearing (4) is arranged in a bearing hole close to the braking device (2), and the lower supporting bearing (7) is arranged in a bearing hole far away from the braking device (2).

3. The external tooth rotary drive with braking symmetrical support of claim 2, characterized in that: the upper supporting bearing (4) and the lower supporting bearing (7) are rolling bearings or sliding bearings capable of bearing radial loads.

4. The external tooth rotary drive with brake symmetrical support of claim 3, characterized in that: the brake device is characterized in that one end of the driving gear (6) fixed with the upper supporting bearing (4) is in key connection with the brake device (2), one end fixed with the lower supporting bearing (7) is covered with an end cover (8), and the end cover (8) is fixed on the base (5) through bolts.

5. The external tooth rotary drive with brake symmetrical support of claim 4, characterized in that: a boss is provided on the external tooth slewing bearing (10), and a seal is provided between the base (5) and the boss of the external tooth slewing bearing (10) by a radial rotary seal (9).

6. The external tooth rotary drive with brake symmetrical support of claim 5, characterized in that: the radial rotary sealing element (9) is a rotary shaft lip-shaped sealing ring.

7. An external tooth rotary drive with brake symmetrical support according to any one of claims 1-6, characterized in that: the braking device (2) is connected with the driving gear (6) in a key mode, and the driving gear (6) is connected with the external tooth slewing bearing (10) in a rotating mode.

8. An external tooth rotary drive with brake symmetrical support according to any one of claims 1-6, characterized in that: the brake device (2) is a wet-type multi-disc brake or a dry-type multi-disc brake.

9. An external tooth rotary drive with brake symmetrical support according to any one of claims 1-6, characterized in that: the power element (1) is a pneumatic motor, a hydraulic motor or an electric motor.

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