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CN-224225141-U - Wide-corner steering gear

CN224225141UCN 224225141 UCN224225141 UCN 224225141UCN-224225141-U

Abstract

The utility model relates to the technical field of steering gears, in particular to a wide-angle steering gear which comprises a valve body, wherein a valve core is arranged in the valve body, a valve sleeve is arranged in the valve core, a torsion spring main body is arranged on the outer wall of the valve core, a rotor is arranged in the valve body, a stator body is arranged in the valve body, an oil inlet is formed in the valve body, a filtering component is arranged in the oil inlet, a working groove communicated with the valve core is formed in the valve body, a first oil port and a second oil port are formed in the valve sleeve, and an oil return groove is formed in the inner wall of the valve body. The utility model firstly increases the free rotation angle to 90 degrees by adopting the cylindrical spiral torsion spring as the torsion spring main body, reduces the flow velocity, greatly reduces the hydraulic flow impact vibration, maximally reduces the flow impact of 1/2, and simultaneously can cancel the buffer valve, the shock absorber and the energy accumulator of the steering system by adopting the technology, thereby saving the cost.

Inventors

  • CAI GUODING
  • ZHANG PINGPING
  • HE GUANQING
  • JIN XIN

Assignees

  • 芜湖中意液压科技股份有限责任公司

Dates

Publication Date
20260512
Application Date
20250624

Claims (7)

  1. 1. The wide-angle steering gear is characterized by comprising a valve body (1), wherein a valve core (2) is arranged in the valve body (1), a valve sleeve (3) is arranged in the valve core (2), a torsion spring main body (4) is arranged on the outer wall of the valve core (2), a rotor (5) is arranged in the valve body (1), a stator body (6) is arranged in the valve body (1), an oil inlet (101) is formed in the valve body (1), a filtering component (7) is arranged in the oil inlet (101), a working groove (102) communicated with the valve core (2) is formed in the valve body (1), a first oil port (103) and a second oil port (104) are formed in the valve sleeve (3), and an oil return groove (105) is formed in the inner wall of the valve body (1).
  2. 2. A wide angle diverter as set forth in claim 1 wherein said first port (103) and said second port (104) are staggered circumferentially such that either one of said first port (103) and said second port (104) can cooperate with said working channel (102) to form a working valve port and the other can cooperate with said return channel (105) to form a return valve port.
  3. 3. A wide angle steering gear according to claim 1, wherein the torsion spring body (4) is a cylindrical helical torsion spring which increases the free angle of rotation to 90 °.
  4. 4. A wide-angle diverter as set forth in claim 1, wherein the filter assembly (7) comprises a mounting plate (701), wherein a filter tube (703) is mounted at one end of the mounting plate (701), the filter tube (703) is in threaded connection with the oil inlet (101), external threads (704) are mounted on the outer walls of the filter tube (703), and baffles (702) are mounted on the inner walls of the filter tube (703).
  5. 5. The wide-angle diverter as set forth in claim 4, wherein a first disc (705) is disposed inside the filter tube (703), connecting rods (706) are mounted on side walls of one ends of the first disc (705), a second disc (707) is mounted on one end, far away from the first disc (705), of the connecting rods (706), filter screens (708) are mounted inside the second disc (707) and the first disc (705), and the second disc (707) is matched with the baffle (702).
  6. 6. The wide-angle steering gear according to claim 4, wherein the outer wall of the filter tube (703) is sleeved with a mounting ring (709), and inner threads (7091) are mounted on the inner walls of the mounting ring (709), and the inner threads (7091) are in threaded connection with the outer threads (704).
  7. 7. A wide angle steering gear according to claim 4, wherein the inner wall of the mounting plate (701) is provided with a gasket (7011).

Description

Wide-corner steering gear Technical Field The utility model relates to the technical field of steering gears, in particular to a wide-angle steering gear. Background The hydraulic steering gear is a non-road vehicle steering gear and can be used in a reversed loader, an excavator, a mining truck and other automobiles with engineering machinery speed per hour lower than 60 km. Most common full-hydraulic steering gears in the market at present adopt the leaf spring, the case has a free corner, and the free corner is little, only has 20 corner scope of angle to the valve pocket, and the aperture of this kind of steering gear case and each link of valve pocket is little, and the velocity of flow is high, and hydraulic oil supply is suddenly, turns to sensitively, arouses steering mechanism's impact vibration easily, and driver's operation is tired easily simultaneously, does not have hydraulic oil filter equipment to lead to containing impurity in the hydraulic oil, thereby influence the life of steering gear, consequently need a wide corner's steering gear to satisfy people's user demand. Disclosure of utility model This section is intended to outline some aspects of embodiments of the utility model and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description of the utility model and in the title of the utility model, which may not be used to limit the scope of the utility model. In view of the above or the fact that most common all-hydraulic steering gears in the market at present adopt leaf springs, the valve core has a free rotation angle relative to the valve sleeve, the free rotation angle is small, and only has a rotation angle range of 20 degrees, the opening degree of each link of the valve core and the valve sleeve of the steering gear is small, the flow rate is high, the hydraulic oil supply is abrupt, the steering is sensitive, the impact vibration of a steering mechanism is easy to cause, the driver is easy to fatigue in operation, meanwhile, a hydraulic oil filtering device is not provided, and therefore, the hydraulic oil contains impurities, thereby influencing the service life of the steering gear, and therefore, the wide rotation angle steering gear is required to meet the use demands of people. It is therefore an object of the present utility model to provide a wide angle steering gear. In order to solve the technical problems, the utility model provides the technical scheme that the wide-angle steering gear comprises a valve body, wherein a valve core is arranged in the valve body, a valve sleeve is arranged in the valve core, a torsion spring main body is arranged on the outer wall of the valve core, a rotor is arranged in the valve body, a stator body is arranged in the valve body, an oil inlet is formed in the valve body, a filtering component is arranged in the oil inlet, a working groove communicated with the valve core is formed in the valve body, a first oil port and a second oil port are formed in the valve sleeve, and an oil return groove is formed in the inner wall of the valve body. The steering gear with the wide angle is characterized in that the first oil port and the second oil port are arranged in a staggered mode in the circumferential direction, so that any one of the first oil port and the second oil port can be matched with the working groove to form a working valve port, and the other one of the first oil port and the second oil port can be matched with the oil return groove to form an oil return valve port. As a preferable scheme of the wide-angle steering gear, the torsion spring main body is a cylindrical spiral torsion spring, and the free angle of rotation can be increased to 90 degrees. As a preferable scheme of the wide-angle steering gear, the filtering assembly comprises a mounting plate, a filtering pipe is arranged at one end of the mounting plate, the filtering pipe is in threaded connection with an oil inlet, external threads are arranged on the outer wall of the filtering pipe, and a baffle is arranged on the inner wall of the filtering pipe. As a preferable scheme of the wide-angle steering gear, a first disc is arranged in the filter pipe, connecting rods are arranged on the side walls of one end of the first disc, a second disc is arranged at one end, far away from the first disc, of the connecting rods, filter screens are arranged in the second disc and the first disc, and the second disc is matched with a baffle. As an optimal scheme of the wide-angle steering gear, the outer wall of the filter pipe is sleeved with the mounting ring, the inner walls of the mounting ring are provided with the internal threads, and the internal threads are in threaded connection with the external threads. As a preferable scheme of the wide-angle steering gear, a sealing gasket is arranged on the inner wall of the mounting plate. The wide-angle steering gear has the following beneficial ef