CN218669655U

CN218669655U - Swing cylinder crankshaft type radial plunger motor

Info

Publication number: CN218669655U
Application number: CN202223325616.5U
Authority: CN
Inventors: 黄素平; 姜剑平; 阮金勇
Original assignee: Ningbo Zheli Hydraulic Technology Co ltd
Current assignee: Ningbo Zheli Hydraulic Technology Co ltd
Priority date: 2022-12-11
Filing date: 2022-12-11
Publication date: 2023-03-21
Anticipated expiration: 2032-12-11

Abstract

The utility model relates to a radial plunger motor technical field of tilt cylinder bent axle formula, and disclose tilt cylinder bent axle formula radial plunger motor, including leading to the food tray, it sets up the double-end key to lead to food tray upper end center, join in marriage the upper end of food tray and connect the copper cushion, lead to lid behind the oil tray upper end fixed connection, the upper end of back lid sets up five plunger subassemblies, five plunger subassembly tip sets up five tilt cylinder subassemblies, set up a plurality of plunger rings between plunger subassembly and tilt cylinder subassembly. According to the oscillating cylinder crankshaft type radial plunger motor, the shell is subjected to a vacuum nitriding process, so that the rigidity of the shell is improved. And the sealing ring made of polyester material has good sealing effect. The upper bearing and the lower bearing adopt self-aligning bearings to effectively compensate concentric errors, shaft deformation and bearing seat deformation. The oil groove is formed in the matching position of the rear cover and the swing cylinder assembly, the lubricating damping holes of the swing cylinder assembly are communicated in a multi-groove mode for lubrication, the conduction efficiency is improved while fault points are reduced, and the pressure resistance is further improved.

Description

Swing cylinder crankshaft type radial plunger motor

Technical Field

The utility model relates to a hydraulic pressure technical field specifically is pendulum cylinder bent axle formula radial plunger motor.

Background

As a main component in providing a high torque hydraulic system, the radial piston hydraulic motor directly affects the mechanical working efficiency under actual conditions. It can work under very low rotational speed steadily and reliably, can with the operating device lug connection that needs low-speed operation, make the complete machine structure simplify, still have the advantage that the volume efficiency is high and the life-span is longer, wide application is in hydraulic system such as light industry machinery, engineering machine tool, the cooperation of adopting between pendulum cylinder and the casing in traditional technology is that oilless bearing does the transition, the pendulum cylinder is easy to take the oilless bearing of inlaying on the casing partially at the wobbling in-process, lead to oilless bearing to lead to the oil hole and the dislocation of motor high-pressure chamber, cause the trapped oil, thereby cause motor operating pressure unstability, phenomenons such as shake, and traditional cylindrical roller bearing bears the ability of radial force relatively weak.

According to a comparison document (patent name: a tilt cylinder type radial plunger hydraulic motor, with the publication number of CN 203130358U, with the application number of 201320005758.5), the device is provided with a roller retainer to achieve the effects of eliminating the roller clearance and protecting the roller, the surfaces of the plunger and the tilt cylinder are coated with anti-abrasion paint to resist abrasion, but the abrasion of the anti-abrasion paint can affect the normal use of the motor, the retainer can bear larger moment when in use and is easy to damage, the retainer is embedded in a groove on the inner wall of a bearing sleeve, the structure is complex, and after abrasion occurs, the abrasion can affect the normal work of the motor.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the invention aims to provide a tilt cylinder crankshaft type radial plunger motor, which solves the problems that according to a comparison document (the patent name is a tilt cylinder type radial plunger hydraulic motor, the publication number is CN 203130358U, and the application number is 201320005758.5), a roller retainer is arranged in the device to achieve the effects of eliminating a roller gap and protecting a roller, abrasion-resistant paint is coated on the surfaces of the plunger and the tilt cylinder to resist abrasion, but the abrasion-resistant paint can influence the normal use of the motor, the retainer can bear larger moment when in use and is easy to damage, the retainer is embedded in a groove on the inner wall of a bearing sleeve, the structure is complex, and after abrasion occurs, the abrasion can influence the normal work of the motor.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: radial plunger motor of tilt cylinder bent axle formula, including leading to the food tray, it sets up the double-end key to lead to food tray upper end center, a plurality of wear-resisting rings of double-end key overcoat, it is a plurality of the food tray is joined in marriage to the overcoat of wear-resisting ring, join in marriage the upper end of food tray and connect the copper cushion, the outer lane of copper cushion sets up the plane seal, lead to the lid behind the fixed connection of food tray upper end, the upper end trompil of back lid sets up a plurality of screw O type circles, the upper end of back lid sets up casing O type circle, the upper end of back lid sets up five plunger subassemblies, five plunger subassembly sets up five tilt cylinder subassembly tip sets up five, set up a plurality of plunger rings between plunger subassembly and tilt cylinder subassembly, five lubricated damping hole is seted up to the end of tilt cylinder subassembly one side, the inside in lubricated damping hole sets up the seal cover, the upper end of back lid sets up the upper bearing, the upper end connection bent axle subassembly of upper end connection bent axle subassembly, the lower bearing is connected to the upper end of bent axle subassembly, the upper end fixed connection protecgulum of back lid, the upper end center of protecgulum is provided with the oil blanket.

Preferably, the double-end key and the connecting end of the oil through disc are matched with the oil through disc, and the structure is simple.

Preferably, lead to the food tray and be connected for bolt lock with the back lid connected mode, the stud key, a plurality of wear ring, join in marriage the food tray and all set up in the cavity that leads to the formation of food tray and back lid bolt lock after with copper cushion, the structure integrated level is high.

Preferably, the housing O-shaped ring is arranged at the center of the connecting part of the rear cover and the front cover, and the five plunger assemblies, the five tilt cylinder assemblies, the upper bearing, the crankshaft assembly and the lower bearing are all arranged in a cavity formed by the bolt locking connection of the rear cover and the front cover, so that the structure is compact, and the high pressure resistance is realized.

Preferably, the plunger assembly is matched with an opening at the lower end of the tilt cylinder assembly, and five tilt cylinder assemblies are matched with the inner structure of the front cover, so that the structure is ingenious, and the size is small.

Preferably, the upper bearing is matched with the inner structure of the rear cover, the lower bearing is matched with the inner structure of the front cover, and the front cover and the rear cover are subjected to vacuum nitriding treatment, so that the rigidity of the shell is improved.

Compared with the prior art, the utility model provides a radial plunger motor of tilt cylinder bent axle formula possesses following beneficial effect:

1. according to the swing cylinder crankshaft type radial plunger motor, the front cover and the rear cover are subjected to vacuum nitriding treatment, so that the rigidity of the shell is improved.

2. This pendulum cylinder bent axle formula radial plunger motor has got rid of the oilless bearing link, adopts the mode of multichannel oil groove and the lubricated damping hole that the pendulum cylinder subassembly tip was seted up to lubricate in protecgulum and back lid and five pendulum cylinder subassembly cooperations, has improved conduction efficiency when reducing the fault point, and the pressure resistance can obtain further promotion.

3. The upper bearing and the lower bearing both adopt self-aligning bearings, the concentric error, the shaft deformation and the bearing seat deformation are effectively compensated, and a small amount of axial load can be borne while the radial load is borne.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic view of the three-dimensional structure of the present invention;

fig. 3 is a schematic three-dimensional structure diagram of the present invention;

FIG. 4 is a schematic view of the split structure of the present invention;

fig. 5 is a first schematic plan view of the present invention;

fig. 6 is a schematic plan view of the present invention;

fig. 7 is a schematic plan view of the present invention.

Wherein: 1. an oil passing disc; 2. a double-headed key; 3. a wear ring; 4. an oil distribution disc; 5. a copper cushion block; 6. plane sealing; 7. a rear cover; 8. a screw O-shaped ring; 9. a housing O-ring; 10. a plunger assembly; 11. a tilt cylinder assembly; 1101. lubricating the damping hole; 12. a plunger ring; 13. sealing sleeves; 14. an upper bearing; 15. a crankshaft assembly; 16. a lower bearing; 17. a front cover; 18. and (7) oil sealing.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-7, the present invention provides a technical solution: the swing cylinder crankshaft type radial plunger motor comprises an oil through disc 1, wherein a double-end key 2 is arranged at the center of the upper end of the oil through disc 1, a plurality of wear-resistant rings 3 are sleeved outside the double-end key 2, an oil distribution disc 4 is sleeved outside the wear-resistant rings 3, the upper end of the oil distribution disc 4 is connected with a copper cushion block 5, the outer ring of the copper cushion block 5 is provided with a plane seal 6, the upper end of the oil through disc 1 is fixedly connected with a rear cover 7, a plurality of screw O-shaped rings 8 are arranged on the upper end of the rear cover 7, a shell O-shaped ring 9 is arranged at the upper end of the rear cover 7, five plunger assemblies 10 are arranged at the upper end of the rear cover 7, five swing cylinder assemblies 11 are arranged at the end parts of the five plunger assemblies 10 and the swing cylinder assemblies 11, a plurality of plunger rings 12 are arranged between the plunger assemblies 10 and the swing cylinder assemblies 11, a lubricating damping hole 1101 is formed in the end part of one side of the five swing cylinder assemblies 11, a seal sleeve gasket 13 is arranged inside the lubricating damping hole 1101, an upper bearing 14 is arranged at the upper end of the rear cover 7, an upper end of the upper bearing 14, an upper end of the upper bearing 15 is connected with an upper end connection assembly 15, a lower bearing assembly 15, a front cover 15 is connected with a front cover 17, the upper end of the crank assembly, an oil seal 18 is arranged at the center of the front cover 17, the upper end of the crank assembly, the crank assembly is compact structure, the crank assembly, the high-pressure resistant structure is small size and the high pressure resistant structure, and small size;

the double-end key 2 is matched with the oil through disc 1 at the connecting end of the oil through disc 1, the oil through disc 1 is connected with the rear cover 7 in a bolt locking manner, the double-end key 2, the wear-resisting rings 3, the oil distribution disc 4 and the copper cushion block 5 are all arranged in a cavity formed after the oil through disc 1 is connected with the rear cover 7 in a bolt locking manner, the structural integration degree is high, and the sealing performance is good;

casing O type ring 9 sets up in the center of lid 7 and protecgulum 17 connecting portion, five plunger subassemblies 10, five tilt cylinder subassemblies 11, upper bearing 14, bent axle subassembly 15 and lower bearing 16 all set up in the cavity that lid 7 and protecgulum 17 bolted connection formed after, plunger subassembly 10 and the opening looks adaptation of tilt cylinder subassembly 11 lower extreme, six tilt cylinder subassemblies 11 and protecgulum 17 inner structure looks adaptation, upper bearing 14 and lid 7 inner structure looks adaptation after, lower bearing 16 and protecgulum 17 inner structure looks adaptation, protecgulum 17 and back lid 7 adopt vacuum nitriding treatment, nitriding treatment has promoted the rigidity of casing.

The working principle is as follows: firstly, in the radial piston motor of the tilt cylinder crankshaft type, because lateral force does not exist between the piston assembly 10 and the tilt cylinder assembly 11, the bottom of the piston is designed to be in static pressure balance, and the piston assembly 10 and the crankshaft assembly 15 transmit torque force through rolling shaft sleeves, so that friction loss in the transmission process is reduced. Therefore, the device has the characteristics of high mechanical efficiency and high starting torque, the link of an oilless bearing is removed, the matching positions of the front cover 17 and the rear cover 7 with the five tilt cylinder assemblies 11 are lubricated by adopting a multi-channel oil groove mode and a lubricating damping hole 1101 formed in the end parts of the tilt cylinder assemblies 11, the conduction efficiency is improved while fault points are reduced, the pressure resistance is further improved, the plane flow distribution is simple and reliable, the plane sealing 6, the screw O-shaped ring 8, the shell O-shaped ring 9 and the sealing sleeve 13 are arranged, the sealing performance is good, the oil drainage quantity is small, the upper bearing (14) and the lower bearing (16) both adopt self-aligning bearings to effectively compensate for concentricity errors, shaft deformation and bearing seat deformation, a small amount of axial load can be borne while the radial load is borne, polyester sealing materials are used between the piston and the tilt cylinder assemblies 11, the device has high volumetric efficiency, the front cover 17 and the rear cover 7 adopt vacuum nitriding treatment, the structural rigidity is improved, the device is more durable, and the device is compact in structure, small in size and high-pressure resistant.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Radial plunger motor of pendulum jar bent axle formula, including logical food tray (1), double-end key (2), wear-resisting ring (3), join in marriage food tray (4), copper cushion (5), plane seal (6), back lid (7), screw O type circle (8), casing O type circle (9), plunger subassembly (10), pendulum jar subassembly (11), lubricated damping hole (1101), plunger ring (12), seal cover (13), upper bearing (14), bent axle subassembly (15), lower bearing (16), protecgulum (17), oil blanket (18), its characterized in that: the oil distribution disc is characterized in that a double-end key (2) is arranged at the center of the upper end of the oil distribution disc (1), a plurality of wear-resistant rings (3) are sleeved outside the double-end key (2), the oil distribution disc (4) is sleeved outside the double-end key (2), a plurality of screw O-shaped rings (8) are arranged at the upper end of the oil distribution disc (4), a shell O-shaped ring (9) is arranged at the outer ring of the copper-shaped ring (5), five plunger assemblies (10) are arranged at the upper end of the oil distribution disc (1) and fixedly connected with the rear cover (7), a plurality of swing cylinder assemblies (11) are arranged between the plunger assemblies (10) and the swing cylinder assemblies (11), a plurality of plunger rings (12) are arranged at the upper end of the rear cover (7), a lubricating damping hole (1101) is formed at the end of one side of the five swing cylinder assemblies (11), a sealing sleeve (13) is arranged inside the lubricating damping hole (13) is formed at the end of the rear cover (7), an upper bearing (14) is arranged at the upper end of the upper bearing (14), and a lower end of the bearing assembly (15) is connected with a front cover (17), an oil seal (18) is arranged at the center of the upper end of the front cover (17).

2. The tilt cylinder crankshaft radial piston motor of claim 1, wherein: the double-end key (2) and the connecting end of the oil through disc (1) are matched with the oil through disc (1).

3. The tilt cylinder crankshaft radial piston motor of claim 1, wherein: lead to food tray (1) and back lid (7) connected mode and be bolt locking connection, double-end key (2), a plurality of wear-resisting ring (3), join in marriage food tray (4) and all set up in the cavity that leads to formation behind oil tray (1) and back lid (7) bolt locking connection with copper cushion (5).

4. The tilt cylinder crankshaft radial piston motor of claim 1, wherein: the casing O-shaped ring (9) is arranged at the center of a connecting part of the rear cover (7) and the front cover (17), and the five plunger assemblies (10), the five tilt cylinder assemblies (11), the upper bearing (14), the crankshaft assembly (15) and the lower bearing (16) are all arranged in a cavity formed by bolt locking connection of the rear cover (7) and the front cover (17).

5. The tilt cylinder crankshaft radial piston motor of claim 1, wherein: the plunger assembly (10) is matched with an opening at the lower end of the tilt cylinder assembly (11), and six tilt cylinder assemblies (11) are matched with the inner structure of the front cover (17).

6. The tilt cylinder crankshaft radial piston motor of claim 1, wherein: the upper bearing (14) is matched with the inner structure of the rear cover (7), the lower bearing (16) is matched with the inner structure of the front cover (17), and the front cover (17) and the rear cover (7) are subjected to vacuum nitriding treatment.