CN102632786B - Hydraulic wheel retracting device for amphibious vehicle - Google Patents

Abstract

The amphibious vehicle wheel hydraulic retractable device includes the frame, the steering knuckle installed in the middle of the wheel, and the driving cylinder. The piston rod of the driving cylinder is connected to the lower part of the steering knuckle through the lower ball joint. The top of the front end of the cylinder body of the driving cylinder is connected to the support The middle part of the rod is fixedly connected, and the front and rear ends of the support rod are respectively fixedly connected with the outer end of a pull rod. The two pull rods are arranged along the left and right directions. The rotating pin shaft and the rotating shaft are set at the same axis. The upper part of the steering knuckle is installed and connected with the outer end of the wheel support frame through the upper ball joint. More than one bearing block is mounted and connected to the vehicle frame. The purpose of the utility model is to provide a hydraulic retractable device for amphibious vehicle wheels with simple and compact structure, good buffering and shock absorption effects, safe and reliable performance, low failure rate, low cost and high lifting height for the wheels.

Description

Amphibious vehicle wheel hydraulic retractable device

technical field

The invention relates to a hydraulic retractable device for wheels of an amphibious vehicle.

Background technique

The structure of the existing amphibious vehicle wheel retractable driving device is usually relatively complicated, and the volume is large, and the suspension part of the vehicle is required to be greatly changed during installation and use. Therefore, the lifting height of the wheel is relatively low, and it is difficult to meet the requirements of the amphibious vehicle. usage requirements. In addition, the existing amphibious vehicle wheel retractable device does not have buffering and shock absorbing functions. In order to reduce the vibration of the vehicle body, a separate shock absorbing device is usually required, resulting in a high cost.

Contents of the invention

The object of the present invention is to provide a hydraulic retractable device for amphibious vehicle wheels with simple and compact structure, good buffering and shock absorption effects, safe and reliable performance, low failure rate, low cost and high lifting height for the wheels.

The amphibious vehicle wheel hydraulic retractable device of the present invention includes a vehicle frame, a steering knuckle installed in the middle of the wheel, and a driving oil cylinder arranged along the left and right directions, and the rear part of the cylinder body of the driving oil cylinder is connected to the vehicle frame through a rotating shaft. , the rotating shaft is set along the front and back horizontal direction, the piston rod of the driving cylinder is installed and connected with the lower part of the steering knuckle through the lower ball joint, the top of the front end of the cylinder body of the driving cylinder is fixedly connected with the middle part of the support rod, and the support rod is arranged along the front and rear horizontal direction , the front and rear ends of the support rod are respectively fixedly connected with the outer end of a pull rod, and the two pull rods are arranged along the left and right directions, and the inner ends of the two pull rods are installed on the vehicle frame by a turning pin shaft respectively, and the two turning pin shafts The upper part of the steering knuckle is installed and connected with the outer end of the wheel support frame through the upper ball joint, and the inner end of the wheel support frame is connected with the torque transmission sleeve set by clearance fit, and the torque transmission sleeve Arranged along the front and rear horizontal directions, the torque transmission sleeve adopts more than one bearing seat to be installed and connected with the vehicle frame. The torsion damping shaft is coaxially arranged in the torque transmission sleeve along the axial direction, and one end of the torsion damping shaft is connected to the torque transmission shaft. One end of the sleeve is fixedly connected, the other end of the torsion damping shaft protrudes from the torque transmission sleeve, one end of the torsion damping shaft protrudes from the torque transmission sleeve and is fixedly connected with the inner end of the shock absorber arm, and the outer end of the shock absorber is connected to the The wheel support frame is fixedly connected, and two swing arms are arranged vertically between the two pull rods. They are hingedly connected with the inner end of one connecting rod respectively, and the outer ends of the two connecting rods are installed and connected with the outer ends of the piston rod of the drive oil cylinder respectively through the rotating pin shaft.

In the amphibious vehicle wheel hydraulic retractable device of the present invention, the middle part of the support rod is hingedly connected with the lower end of the shock absorber, the upper end of the shock absorber is connected with the pin shaft of the shock absorber arm, and the shock absorber arm is horizontally aligned with the left and right sides. It is set that the inner end of the shock absorber arm is fixedly connected with the outer side wall of the torque transmission sleeve.

In the amphibious vehicle wheel hydraulic retractable device of the present invention, the vehicle frame is provided with a transmission, and the transmission includes a housing, a power input shaft arranged along the front and rear directions, and a power output shaft arranged along the left and right directions, and the housing uses the power input shaft The axis of the center is rotatably installed on the frame, the outer end of the power output shaft is connected with the left universal joint shaft of the spherical roller universal joint, and the left universal joint of the spherical roller universal joint The shaft goes out of the housing, and the end surface of the right universal joint shaft of the spherical roller universal joint is provided with an insertion hole, and the insertion hole and the inner end shaft section of the drive shaft are inserted in a slidable manner by spline fit. Connected, the outer end of the drive shaft is installed and connected with the ball cage, and the ball cage is installed at the center of the wheel.

In the amphibious vehicle wheel hydraulic retractable device of the present invention, the inner end of the shock absorbing arm is provided with a through hole, and the through hole of the shock absorbing arm is matched with the outer wall of the torsion shock absorbing shaft through a spline, and the shock absorbing arm The outer end of the wheel adopts more than one bolt to be fixedly connected with the wheel support frame.

In the amphibious vehicle wheel hydraulic retractable device of the present invention, the diameter of the torsion damping shaft is 20-50mm, the length of the torsion damping shaft (14) is 280-750mm, and the diameter of the inner hole of the torsion transmission sleeve is 20-50mm. The diameter of the damping shaft is 1.02-1.14 times, and the torsion damping shaft is made of spring steel.

In the amphibious vehicle wheel hydraulic retractable device of the present invention, the diameter of the torsion damping shaft is 25-35 mm, the length of the torsion damping shaft is 300-700 mm, and the diameter of the inner hole of the torsion transmission sleeve is the torsion damping shaft 1.05-1.1 times the diameter.

When the amphibious vehicle wheel hydraulic retractable device of the present invention is in use, the piston rod of the driving cylinder can be stretched out, and the lower part of the steering knuckle can be pushed to swing outwards and upwards, so that the lower part of the wheel can move upwards and outwards, and be lifted Get up, thereby the wheel is lifted away from the water surface, to reduce the resistance of the amphibious vehicle walking in the water using the amphibious vehicle wheel hydraulic retractable device of the present invention; The rod protrudes outwards and pulls the lower ends of the two swing arms to swing outwards and upwards, and the torque transmission sleeve will rotate accordingly under the action of the upper ends of the two swing arms. When the amphibious vehicle using the amphibious vehicle wheel hydraulic retractable device of the present invention needs to return to the land to drive, the piston rod of the driving oil cylinder arranged on the vehicle frame can be allowed to shrink inward, driving the steering knuckle to move downward and inward, Let the lower part of the wheel move downward, inward, and be put down, so that the amphibious vehicle using the hydraulic retractable device for the wheel of the amphibious vehicle of the present invention can move on land. In the process of moving on land, the jump caused by the up and down bumps of the wheel can act on the shock absorber arm through the wheel support frame, so that the outer end of the shock absorber arm can swing, so that the inner end of the shock absorber arm can twist back and forth The damping shaft makes one end of the torsion damping shaft do torsional motion to absorb and slow down the jump caused by the up and down bumps of the wheel. Therefore, the amphibious vehicle wheel hydraulic retractable device of the present invention has the characteristics of simple and compact structure, good buffering and shock absorption effects, safe and reliable performance, low failure rate, low cost, and large lifting height for the wheels.

The amphibious vehicle wheel hydraulic retractable device of the present invention will be further described below in conjunction with the accompanying drawings.

Description of drawings

Fig. 1 is a structural schematic diagram of the wheel hydraulic retractable device of the amphibious vehicle of the present invention, in which two hydraulic retractable devices for the wheel of the amphibious vehicle are drawn side by side in the figure.

Detailed ways

As shown in Figure 1, the amphibious vehicle wheel hydraulic retractable device of the present invention includes a vehicle frame 1, a steering knuckle 3 installed in the middle of the wheels 2 (one of the wheels is not shown), and a drive cylinder 4 arranged in the left and right directions. , the rear part of the cylinder body of the drive cylinder 4 is installed and connected with the vehicle frame 1 through the rotating shaft 5, and the rotating shaft 5 is arranged along the front and rear horizontal directions, and the piston rod of the driving cylinder 4 is connected with the bottom of the steering knuckle 3 through the lower ball joint 26, and the driving cylinder 4, the top of the front end of the cylinder body is fixedly connected to the middle part of the support rod 6, and the support rod 6 is arranged along the front and rear horizontal directions. The inner ends of the two pull rods 7 are installed on the vehicle frame 1 with a revolving pin shaft 8 respectively, and the two revolving pin shafts 8 are coaxially arranged with the rotating shaft 5. The outer end of the frame 10 is installed and connected, and the inner end of the wheel support frame 10 is connected with the torque transmission sleeve 11 by clearance fit. The torque transmission sleeve 11 is arranged along the front and rear horizontal directions. It is installed and connected with the vehicle frame 1. The torsion damping shaft 14 is coaxially arranged in the torque transmission sleeve 11 along the axial direction. One end of the torsion damping shaft 14 is fixedly connected with one end of the torque transmission sleeve 11. The other end stretches out the torque transmission sleeve 11, and one end of the torsion damping shaft 14 stretches out of the torque transmission sleeve 11 is fixedly connected with the inner end of the shock absorber arm 13, and the outer end of the shock absorber arm 13 is fixedly connected with the wheel support frame 10 Two swing arms 15 are arranged vertically between the two pull rods 7, the upper ends of the two swing arms 15 are fixedly connected with the outer side walls of the torque transmission sleeve 11 respectively, and the lower ends of the two swing arms 15 are respectively connected with a connecting The inner end of rod 16 is hingedly connected, and the outer ends of two connecting rods 16 are installed and connected with the outer end of the piston rod of drive oil cylinder 4 by a revolving pin shaft 17 respectively.

The middle part of the above-mentioned support rod 6 is hingedly connected with the lower end of the shock absorber 18, and the upper end of the shock absorber 18 is connected with the adopting pin of the shock absorber arm 19. The inner end is fixedly connected with the outer wall of the torque transmission sleeve 11 .

The vehicle frame 1 is provided with a speed changer, the speed changer includes a housing 20, a power input shaft 23 arranged in the front-rear direction and a power output shaft 24 arranged in the left-right direction, and the housing 20 is rotatable around the axis of the power input shaft 23. Installed on the vehicle frame 1, the outer end of the power output shaft is connected with the left universal joint shaft of the spherical roller universal joint 24, and the left universal joint shaft of the spherical roller universal joint 24 passes through the housing 20 outward. , the end face of the right universal joint shaft of the spherical roller type universal joint 24 is provided with an insertion hole, and the insertion hole and the inner end shaft section of the drive shaft 25 are connected by spline fit to be slidably inserted, and the outer portion of the drive shaft 25 The end is installed and connected with the ball cage 21, and the ball cage 21 is installed in the central part of the wheel 2.

The inner end of the above-mentioned shock-absorbing arm 13 is provided with a through hole, and the through-hole of the shock-absorbing arm 13 cooperates with the outer side wall of the torsion damping shaft 14 through a spline, and the outer end of the shock-absorbing arm 13 is supported by more than one bolt and the wheel. The frame 10 is fixedly connected.

The diameter of the above-mentioned torsion damping shaft 14 is preferably 20-50mm, the length of the torsion damping shaft 14 is preferably 280-750mm, and the diameter of the inner hole of the torque transmission sleeve 11 is preferably 1.02-1.14 times the diameter of the torsion damping shaft 14. The shock shaft 14 is preferably made of spring steel.

The diameter of the above-mentioned torsion damping shaft 14 is preferably 25-35mm, the length of the torsion damping shaft 14 is preferably 300-700mm, and the diameter of the torque transmission sleeve 11 endoporus is preferably 1.05-5mm of the diameter of the torsion damping shaft 14. 1.1 times.

When the amphibious vehicle using the amphibious vehicle wheel hydraulic retractable device of the present invention needs to move in water, the piston rod of the drive cylinder 4 can be stretched out to push the bottom of the steering knuckle 3 to swing outwards and upwards, so that the bottom of the wheel can Move upwards and outwards, and be lifted, thereby the wheels are lifted away from the water surface, so as to reduce the resistance of the amphibious vehicle using the amphibious vehicle wheel hydraulic retractable device of the present invention to walk in water; at the same time, the two connecting rods 16 The outer end will also stretch out along with the piston rod of the drive cylinder 4, and pull the lower ends of the two swing arms 15 to swing outwards and upwards, and the torque transmission sleeve 11 will act on the upper ends of the two swing arms 15. Rotate accordingly.

When the wheel is lifted, the outer end of the wheel support frame 10 will move together with the upper part of the steering knuckle 3, and the inner end of the wheel support frame 10 will slide relative to the torque transmission sleeve 11, and the wheel support frame will The inner end of 10 is not fixedly connected with the torque transmission sleeve 11.

When the amphibious vehicle using the amphibious vehicle wheel hydraulic retractable device of the present invention needs to return to the land to drive, the piston rod of the drive cylinder 4 arranged on the vehicle frame 1 can be allowed to shrink inwardly, driving the steering knuckle 3 downward, The lower part of the wheel is moved downward and inward, and is put down, so that the amphibious vehicle using the hydraulic retractable device for the wheels of the amphibious vehicle of the present invention can move on land. In the process of moving on land, the jump caused by the up and down bumps of the wheel can act on the shock absorbing arm 13 through the wheel support frame 10, so that the outer end of the shock absorbing arm 13 can swing, so that the inner end of the shock absorbing arm 13 Twisting the torsion damping shaft 14 back and forth makes one end of the torsion damping shaft 14 do a torsion motion to absorb and slow down the jump caused by the up and down bumps of the wheel.

The above-mentioned embodiments are only descriptions of the preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, ordinary engineers and technicians in the field may make various modifications to the technical solutions of the present invention. and improvements, all should fall within the scope of protection determined by the claims of the present invention.

Claims (6)

1. Amphibious vehicle wheel hydraulic retractable device, including vehicle frame (1), steering knuckle (3) installed in the middle of the wheel (2), characterized in that: it also includes a drive cylinder (4) arranged along the left and right directions, and the drive cylinder The rear portion of the cylinder body of (4) is installed and connected with the vehicle frame (1) through a rotating shaft (5), and the rotating shaft (5) is arranged along the front and rear horizontal directions, and the piston rod of the driving oil cylinder (4) passes through the lower ball joint (26) It is installed and connected with the lower part of the steering knuckle (3), and the top of the front end of the cylinder body of the driving oil cylinder (4) is fixedly connected with the middle part of the support rod (6). ) are fixedly connected to the outer ends of a pull rod (7) respectively, and the two pull rods (7) are arranged along the left and right directions, and the inner ends of the two pull rods (7) are respectively installed on the On the vehicle frame (1), two revolving pin shafts (8) are coaxially arranged with the rotating shaft (5), and the upper part of the steering knuckle (3) is connected to the wheel support frame (10) through the upper ball joint (9). ), the inner end of the wheel support frame (10) is connected with the set of the torque transmission sleeve (11) by clearance fit, the torque transmission sleeve (11) is set along the front and rear horizontal direction, and the torque transmission sleeve (11) More than one bearing seat (12) is installed and connected with the vehicle frame (1), and the torsion damping shaft (14) is coaxially arranged in the torque transmission sleeve (11) along the axial direction, and the torsion damping shaft (14) ) is fixedly connected with one end of the torque transmission sleeve (11), the other end of the torsion damping shaft (14) stretches out the torque transmission sleeve (11), and the torsion damping shaft (14) stretches out of the torque transmission sleeve ( One end of 11) is fixedly connected with the inner end of the shock-absorbing arm (13), and the outer end of the shock-absorbing arm (13) is fixedly connected with the wheel support frame (10). There are two swing arms (15), the upper ends of the two swing arms (15) are fixedly connected with the outer side walls of the torque transmission sleeve (11), and the lower ends of the two swing arms (15) are respectively connected with a connecting rod The inner end of (16) is hingedly connected, and the outer ends of two connecting rods (16) are installed and connected with the outer end of the piston rod of described drive oil cylinder (4) by rotating pin shaft (17) respectively. 2. The amphibious vehicle wheel hydraulic retractable device according to claim 1, characterized in that: the middle part of the support rod (6) is hingedly connected to the lower end of the shock absorber (18), and the upper end of the shock absorber (18) It is connected with the adopting pin of the shock absorber arm (19), and the shock absorber arm (19) is arranged horizontally along the left and right sides, and the inner end of the shock absorber arm (19) is fixed to the outer wall of the torque transmission sleeve (11). connected. 3. The amphibious vehicle wheel hydraulic retractable device according to claim 2, characterized in that: the vehicle frame (1) is provided with a speed changer, the speed changer includes a housing (20), a power input shaft ( 23) and the power output shaft arranged along the left and right directions, the housing (20) is rotatably mounted on the vehicle frame (1) centered on the axis of the power input shaft (23), and the outer end of the power output shaft Connected with the left universal joint shaft transmission of the spherical roller universal joint (24), the left universal joint shaft of the spherical roller universal joint (24) passes through the housing (20), and the spherical roller universal joint The end face of the right universal joint shaft of the knuckle (24) is provided with an insertion hole, and the insertion hole and the inner end shaft section of the drive shaft (25) are connected by spline fit to be slidably inserted, and the drive shaft (25) The outer end is installed and connected with the ball cage (21), and the ball cage (21) is installed at the central part of the wheel (2). 4. The amphibious vehicle wheel hydraulic retractable device according to claim 3, characterized in that: the inner end of the shock absorbing arm (13) is provided with a through hole, and the through hole of the shock absorbing arm (13) is connected with the spline The outer side wall of the torsion damping shaft (14) matches, and the outer end of the damping arm (13) adopts more than one bolt to be fixedly connected with the wheel support frame (10). 5. The amphibious vehicle wheel hydraulic retractable device according to claim 4, characterized in that: the diameter of the torsion damping shaft (14) is 20-50mm, and the length of the torsion damping shaft (14) is 280-750mm , the diameter of the inner hole of the torque transmission sleeve (11) is 1.02-1.14 times the diameter of the torsion damping shaft (14), and the torsion damping shaft (14) is made of spring steel. 6. The amphibious vehicle wheel hydraulic retractable device according to claim 5, characterized in that: the diameter of the torsion damping shaft (14) is 25-35mm, and the length of the torsion damping shaft (14) is 300-700mm , the diameter of the inner hole of the torque transmission sleeve (11) is 1.05-1.1 times the diameter of the torsion damping shaft (14).

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