CN210217984U

CN210217984U - Improved generation bent axle connecting rod hydraulic motor

Info

Publication number: CN210217984U
Application number: CN201921064324.6U
Authority: CN
Inventors: Wanrong Wu; 吴万荣; Jixiong Qu; 瞿季雄; Yanbo Yan; 严燕波
Original assignee: Ningbo Dandun Hydraulic Transmission Co Ltd
Current assignee: Ningbo Dandun Hydraulic Transmission Co Ltd
Priority date: 2019-07-09
Filing date: 2019-07-09
Publication date: 2020-03-31
Anticipated expiration: 2029-07-09

Abstract

An improved crankshaft connecting rod hydraulic motor comprises a shell, wherein a plurality of cylinder bodies are uniformly distributed on the shell, and a cylinder cover is fixed at the outer end of each cylinder body and communicated with an oil way; the crankshaft assembly and the piston assembly are arranged in the shell, and the crankshaft part of the crankshaft assembly is arranged in the shell and sealed through a bearing cover; piston assemblies extending into the cylinder body are uniformly distributed on the outer side of the crankshaft part, and eccentric holes are formed in the eccentric structure of the crankshaft part. In a conventional crankshaft connecting rod hydraulic motor, when a crankshaft rotates at a high speed, a large centrifugal force is generated, causing strong vibration or vibration tendency of equipment. In this application, the mode that sets up the eccentric orfice through the eccentric structure of bent axle has alleviateed the quality of eccentric structure department, has reduced eccentric pivoted centrifugal force during operation, makes equipment operation more stable.

Description

Improved generation bent axle connecting rod hydraulic motor

Technical Field

The utility model belongs to the technical field of motor equipment, concretely relates to improved generation crankshaft connecting rod hydraulic motor.

Background

Hydraulic motors are transmission devices for realizing hydraulic-mechanical energy conversion, are widely applied in various industries, and are well known and common by people. The hydraulic motors are various, and among them, a crankshaft connecting rod type five-star hydraulic motor is one of them. There are more crankshaft connecting rod hydraulic motor among the prior art, if: chinese patent No. CN1189673C discloses a crankshaft connecting rod type hydraulic motor, in which the general structure of such a hydraulic motor is disclosed.

The crankshaft connecting rod type hydraulic motor is an actuating element for converting hydraulic energy into mechanical energy, generally, the hydraulic motor comprises a shell, an oil guider, an oil distributor, a piston connecting rod assembly and a crankshaft, one end of the crankshaft coaxially rotates with the oil distributor through a double-end structure, piston cylinders are uniformly arranged on the radial periphery of the crankshaft, and pistons in the piston cylinders are connected with a connecting rod ball hinge. When the hydraulic energy conversion device is used, pressure oil enters the piston cylinder from the oil distributor and the shell, the pressure oil generates pressure to act on the top of the piston, the piston pushes the connecting rod to further push the crankshaft to rotate, and the crankshaft rotates around the crankshaft rotating center, so that hydraulic energy is converted into mechanical energy to drive a load.

When a traditional crankshaft connecting rod type hydraulic motor works, a crankshaft (an eccentric shaft) in the motor rotates, and because the crankshaft is in a cam structure form, the gravity center of the whole mass deviates from a rotating axis, centrifugal force exists at any point deviating from the axis of an output shaft of the motor during working, the larger the rotating speed is, the larger the eccentric mass is, the larger the centrifugal vibration tendency during movement is, higher requirements are provided for the installation structure of equipment, and meanwhile, the service life of the equipment is also influenced by excessive vibration. In addition, during the rotation of the crankshaft, friction loss exists between parts, so that certain measures of lubrication and cooling are required.

Based on the above problems, the present application provides further design and improvement of the crankshaft connecting rod hydraulic motor in the prior art.

SUMMERY OF THE UTILITY MODEL

To not enough among the above prior art, the utility model provides an improved generation bent axle connecting rod hydraulic motor through the structural design to the bent axle among the hydraulic motor, has reduced centrifugal shock effect, has improved the stability when equipment moves, and friction is effectual with lubricated simultaneously, the whole long service life of equipment.

In order to solve the above technical problem, the present invention solves the above technical problems.

An improved crankshaft connecting rod hydraulic motor comprises a shell, wherein a plurality of cylinder bodies are uniformly distributed on the shell, and a cylinder cover is fixed at the outer end of each cylinder body and communicated with an oil way; the crankshaft assembly and the piston assembly are arranged in the shell, and the crankshaft part of the crankshaft assembly is arranged in the shell and sealed through a bearing cover; piston assemblies extending into the cylinder body are uniformly distributed on the outer side of the crankshaft part, and eccentric holes are formed in the eccentric structure of the crankshaft part.

In a conventional crankshaft connecting rod hydraulic motor, when a crankshaft rotates at a high speed, a large centrifugal force is generated, causing strong vibration or vibration tendency of equipment. In this application, the mode that sets up the eccentric orfice through the eccentric structure of bent axle has alleviateed the quality of eccentric structure department, has reduced eccentric pivoted centrifugal force during operation, makes equipment operation more stable.

In a preferred embodiment, the eccentric hole is disposed parallel to the axial direction of the crankshaft, and communicates with an eccentric side hole provided on the outer side of the crankshaft. In this structure, through the setting to eccentric orfice and eccentric side opening, formed oil circuit passageway, make hydraulic oil can enter into the outside of bent axle portion through this passageway, play fine lubricated effect, the hydraulic oil that flows simultaneously also can take away the friction heat.

In a preferred embodiment, two eccentric holes which are respectively communicated in front and back are formed in the crankshaft part, and the eccentric holes are communicated to the outer side of the crankshaft part through a plurality of eccentric side holes.

In a preferred embodiment, the piston assembly comprises a connecting rod arranged outside the crankshaft part and a piston extending into the cylinder body, the end part of the connecting rod is a ball seat, the ball seat is arranged in the piston, and the ball seat can rotate in the piston, so that the connecting rod cannot be clamped in the telescopic motion process of the piston.

In a preferred embodiment, the bottom of the connecting rod is a connecting rod seat, the connecting rod seat is provided with a guide groove, and the guide groove is matched with the guide ring for limiting, so that the connecting rod cannot be separated.

In a preferred embodiment, the top of the piston is provided with an oil hole, and the oil hole is arranged to allow part of hydraulic oil to enter into a friction interface between the piston and the ball seat through the oil hole to perform a lubricating and cooling function.

In a preferred embodiment, the crankshaft is disposed in a crankshaft bearing, the piston assembly is disposed outside the crankshaft bearing, and the crankshaft bearing and the piston assembly can rotate relative to each other with low friction.

In a preferred embodiment, the hydraulic motor is a five-star hydraulic motor.

Compared with the prior art, the utility model discloses following beneficial effect has: the improved crankshaft connecting rod hydraulic motor is provided, the centrifugal vibration effect is reduced and the stability of equipment in operation is improved through the structural design of a crankshaft in the hydraulic motor; through the design to the oilhole, make the cooling of equipment during operation with lubricated effectual, the whole long service life of equipment.

Drawings

Fig. 1 is a first perspective view of a motor according to the present invention.

Fig. 2 is a second perspective view of the motor of the present invention.

Fig. 3 is a first perspective view of the motor without the cylinder cover according to the present invention.

Fig. 4 is a second perspective view of the motor without the cylinder cover according to the present invention.

Fig. 5 is a perspective view of a housing in the motor of the present application.

FIG. 6 is a perspective view of a crankshaft assembly of the present application in cooperation with a piston assembly.

FIG. 7 is a schematic illustration of a crankshaft assembly of the present application in cooperation with a piston assembly.

FIG. 8 is a perspective view of a crankshaft assembly of the present application in cooperation with a connecting rod.

FIG. 9 is a first perspective view of a crankshaft assembly and crankshaft bearings thereon according to the present application.

Fig. 10 is a second perspective view of the crankshaft assembly of the present application and a crankshaft bearing thereon.

FIG. 11 is a perspective view of a crankshaft assembly of the present application.

Fig. 12 is a second perspective view of the crankshaft assembly of the present application.

FIG. 13 is an end view of a crankshaft assembly of the present application.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

The embodiments described below by referring to the drawings are exemplary only for explaining the present invention and are not construed as limiting the present invention, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

In the description of the present invention, it is to be understood that the term: the center, vertically, transversely, length, width, thickness, upper and lower, preceding, back, left and right, vertical, level, top, end, inside and outside, clockwise, anticlockwise etc. indicate position or positional relationship for based on the position or positional relationship that the drawing shows, just for the convenience of description the utility model discloses and simplified description, consequently can not be understood as the restriction of the utility model. Furthermore, the terms: first, second, etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features shown. In the description of the present invention, unless explicitly stated or limited otherwise, the terms: mounting, connecting, etc. should be understood broadly, and those skilled in the art will understand the specific meaning of the terms in this application as they pertain to the particular situation.

Referring to fig. 1 to 13, an improved crankshaft connecting rod hydraulic motor, which may be a five-star hydraulic motor, includes a housing 1, wherein a plurality of cylinder bodies 2 are uniformly distributed on the housing 1, the outer ends of the cylinder bodies 2 are fixed with cylinder covers 21 through bolts 211, and the cylinder covers 21 are communicated with an oil path 27; the housing 1 is internally provided with a crankshaft assembly 3 and a piston assembly, and a crankshaft part 31 of the crankshaft assembly 3 is arranged in the housing 1 and sealed by a bearing cover 4; the outside evenly distributed of bent axle portion 31 has the piston assembly who stretches into in the cylinder body 2, be equipped with eccentric orfice 312 on the eccentric structure of bent axle portion 31, the quality of eccentric structure department has been alleviateed in the setting of eccentric orfice 312, has reduced eccentric pivoted centrifugal force during operation, makes equipment operation more stable.

In the embodiment of the present application, the eccentric hole 312 is provided in parallel with the axial direction of the crankshaft, the eccentric hole 312 communicates with the eccentric side hole 313, and the eccentric side hole 313 is provided outside the crankshaft 31. In this structure, through the setting to eccentric hole 312 and eccentric side hole 313, formed the oil circuit passageway, made hydraulic oil can enter into the outside of bent axle portion 31 through this passageway, played fine lubricated effect, the while hydraulic oil that flows also can take away the friction heat. In a further embodiment, two eccentric holes 312 are provided on the crankshaft 31, and preferably symmetrically arranged; each eccentric hole 312 communicates to the outside of crankshaft portion 31 through a plurality of eccentric side hole 313, and eccentric side hole 313 is the aperture hole, can evenly distribute in the row, sets up rationally, and lubricated cooling effect is good.

In the hydraulic motor in this application, the piston assembly is including locating connecting rod 6 in the crankshaft part 31 outside and stretching into the piston 5 in the cylinder body 2, the tip of connecting rod 6 is ball seat 61, and this ball seat 61 is arranged in piston 5, and ball seat 61 can rotate in piston 5, guarantees that 5 concertina movement in-process connecting rod of piston can not block. The bottom of the connecting rod 6 is a connecting rod seat, the connecting rod seat is provided with a guide groove, and the guide groove is matched with the guide ring 321 for limiting, so that the connecting rod 6 cannot be separated. The top of the piston 5 is provided with an oil hole 55, and the oil hole is arranged to allow part of hydraulic oil to enter a friction interface between the piston 5 and the ball seat 61 through the oil hole, so as to perform the functions of lubrication and cooling.

Furthermore, in the hydraulic motor of the present application, the crankshaft 31 is disposed in the crankshaft bearing 32, the piston assembly is disposed outside the crankshaft bearing 32, the crankshaft bearing 32 and the piston assembly can rotate relatively to each other with low friction, and a protruding edge 311 is disposed outside the crankshaft 31 to define a roller in the crankshaft bearing 32.

The hydraulic motor in the present application generally operates as follows: when the hydraulic oil pump works, the motor is connected to the hydraulic oil pump, the hydraulic oil pump can be of a conventional structure, an oil pipe on the hydraulic oil pump is communicated with an oil way 27 in the motor, and meanwhile, the oil way 27 is communicated into the cylinder body 2 through the cylinder cover 21. When the crankshaft assembly 3 runs, the oil pump sequentially transfers oil and returns oil in the five cylinder bodies 2 through oil transfer and oil return to drive the pistons 5 in the cylinder bodies 2 to reciprocate, and the pistons 6 in the five cylinder bodies 2 sequentially reciprocate to drive the respective connecting rods 6 to move so as to drive the crankshaft part 31 to rotate, so that the crankshaft assembly 3 rotates to output torque.

In a conventional crankshaft connecting rod hydraulic motor, when a crankshaft rotates at a high speed, a large centrifugal force is generated, causing strong vibration or vibration tendency of equipment. In the application, the mode of setting up two great eccentric orfices 312 on the eccentric structure of bent axle, then process 4 apertures (eccentric side opening 313) in every eccentric orfice 312, alleviateed the quality of eccentric structure department, reduced eccentric pivoted centrifugal force during operation, make equipment operation more stable. Meanwhile, in the application, through the arrangement of the eccentric hole 312 and the eccentric side hole 313, an oil path channel is formed, so that hydraulic oil in the working process can enter between the crankshaft part 31 and the crankshaft bearing 32 through the channel, a good lubricating effect is achieved, and meanwhile, friction heat can be taken away by flowing hydraulic oil.

In view of the above, the utility model provides an improved crankshaft connecting rod hydraulic motor, which reduces the centrifugal vibration effect and improves the stability of the device during operation by the structural design of the crankshaft in the hydraulic motor; through the design to the oilhole, make the cooling of equipment during operation with lubricated effectual, the whole long service life of equipment.

The protection scope of the present invention includes but is not limited to the above embodiments, the protection scope of the present invention is subject to the claims, and any replacement, deformation, and improvement that can be easily conceived by those skilled in the art made by the present technology all fall into the protection scope of the present invention.

Claims

1. An improved crankshaft connecting rod hydraulic motor comprises a shell (1), wherein a plurality of cylinder bodies (2) are uniformly distributed on the shell (1), a cylinder cover (21) is fixed at the outer end of each cylinder body (2), and the cylinder cover (21) is communicated with an oil way (27); the crankshaft assembly (3) and the piston assembly are arranged in the shell (1), and a crankshaft part (31) of the crankshaft assembly (3) is arranged in the shell (1) and sealed through a bearing cover (4); the outside evenly distributed of bent axle portion (31) has the piston assembly who stretches into in cylinder body (2), its characterized in that: and an eccentric hole (312) is formed in the eccentric structure of the crankshaft part (31).

2. An improved hydraulic motor as claimed in claim 1, wherein the eccentric hole (312) is arranged parallel to the axial direction of the crankshaft, and the eccentric hole (312) communicates with an eccentric side hole (313), the eccentric side hole (313) being provided outside the crankshaft part (31).

3. An improved hydraulic motor as claimed in claim 1, wherein said crankshaft portion (31) is provided with two eccentric holes (312) extending through the crankshaft portion in a front-to-rear direction, said eccentric holes (312) being connected to the outside of the crankshaft portion (31) through a plurality of eccentric side holes (313).

4. An improved crankshaft connecting rod hydraulic motor according to claim 1, characterized in that the piston assembly comprises a connecting rod (6) arranged outside the crankshaft part (31) and a piston (5) extending into the cylinder (2), the end of the connecting rod (6) is a ball seat (61), and the ball seat (61) is arranged in the piston (5).

5. The improved hydraulic motor with the crankshaft and the connecting rod as claimed in claim 4 is characterized in that the bottom of the connecting rod (6) is a connecting rod seat, and a guide groove is arranged on the connecting rod seat and is matched with and limited by a guide ring (321).

6. An improved crankshaft connecting rod hydraulic motor according to claim 4, characterized in that the top of the piston (5) is provided with oil holes (55).

7. An improved crankshaft connecting rod hydraulic motor according to any of claims 1 to 6, characterized in that the crankshaft part (31) is placed in a crankshaft bearing (32) and the piston assembly is placed outside the crankshaft bearing (32).

8. The improved crankshaft connecting rod hydraulic motor as in claim 7, wherein said hydraulic motor is a five star hydraulic motor.