A clamping mechanism for off-highway wheels

Abstract

This invention provides a clamping mechanism for off-highway wheels, belonging to the technical field of wheel assembly equipment. It includes a clamping base plate, on which three identical hub clamping base plates are arranged circumferentially. A gripper fixing plate is radially slidably mounted on the upper end of each hub clamping base plate. A hub support plate and a hub clamping claw are fixed to the inner end of the gripper fixing plate. A tire support plate driven by a lifting cylinder is mounted on the gripper fixing plate. A tire support plate supported by a support rod is arranged between adjacent hub clamping base plates. A radially arranged driving cylinder is fixed to any tire support plate, and the piston rod of the driving cylinder drives the opposing gripper fixing plate to slide radially. A rotating bushing is rotatably connected to the middle of the clamping base plate. Three synchronous tie rods are circumferentially hinged to the rotating bushing, and the outer ends of the three synchronous tie rods are respectively hinged to the side walls of the three gripper fixing plates. This invention has advantages such as greater convenience for clamping large-size hubs and installing tires.

Description

Technical Field

[0001] This utility model belongs to the technical field of wheel assembly equipment, and specifically refers to a clamping mechanism for off-road wheels. Background Technology

[0002] Off-highway equipment, such as tractors, harvesters, and other off-highway vehicles, typically have wheels that are large in size and heavy in weight. Traditional clamping devices for these wheels often present problems when assembling and disassembling them.

[0003] Traditional clamping mechanisms mostly use three-jaw chucks to hold the wheel hub, but their maximum expansion diameter is usually insufficient to cover the size requirements of this type of wheel hub. At the same time, during the installation process, because this type of tire is thick and has high sidewall stiffness, the wheel hub needs to be tilted to a certain extent so that the tire shoulder can slide into the edge of the wheel hub with the help of gravity. However, traditional clamping can only achieve fixation in one direction, and the wheel hub cannot be adjusted at the angle. Moreover, it is usually done by manually prying or lifting, which is inefficient. Utility Model Content

[0004] The purpose of this invention is to provide a clamping mechanism for off-highway wheels, which can effectively clamp and secure large-sized wheel hubs, while facilitating subsequent tire installation.

[0005] The purpose of this utility model is achieved as follows:

[0006] A clamping mechanism for off-highway wheels includes a clamping base plate. Three identical hub clamping base plates are circumferentially arranged on the clamping base plate. A gripper fixing plate is radially slidably mounted on the upper end of the hub clamping base plate. A hub support plate and a hub clamping claw are fixed to the inner end of the gripper fixing plate. A tire support plate driven by a lifting cylinder is mounted on the gripper fixing plate. A tire support plate supported by a support rod is arranged between adjacent hub clamping base plates. A radially arranged driving cylinder is fixed on any tire support plate, and the piston rod of the driving cylinder drives the opposing gripper fixing plate to slide radially. A rotating bushing is rotatably connected to the middle of the clamping base plate. Three synchronous tie rods are circumferentially hinged to the rotating bushing, and the outer ends of the three synchronous tie rods are respectively hinged to the side walls of the three gripper fixing plates. When the driving cylinder drives the gripper fixing plate to slide radially, the synchronous tie rods synchronously drive the other two synchronous tie rods to move synchronously through the rotating bushing, and the other two gripper fixing plates slide radially synchronously.

[0007] The present invention is further configured such that the lifting cylinder is radially disposed on the upper surface of the gripper fixing plate, a push-pull plate is fixed to the output end of the lifting cylinder, two sets of parallel "X"-shaped connecting rods are disposed between the gripper fixing plate and the tire support top plate, and a slide rail is provided between the gripper fixing plate and the tire support top plate for hinged sliding of the ends of the "X"-shaped connecting rods. The other two ends of the "X"-shaped connecting rods are respectively hinged to the upper surface of the gripper fixing plate and the lower surface of the tire support top plate. The two ends of the push-pull plate are respectively fixedly connected to the ends of the "X"-shaped connecting rods hinged on the slide rails. When the piston rod of the lifting cylinder pushes the push-pull plate to move radially, the "X"-shaped connecting rod drives the tire support top plate to move up and down.

[0008] The present invention is further configured such that a stop plate is fixed to the inner end of the clamping claw fixing plate, the hub support plate and the bottom of the hub clamping claw are fixed to the upper end of the stop plate by bolts, and the stop plate is provided with a plurality of radially distributed screw holes.

[0009] The present invention is further configured such that the hub clamping claw includes a hub clamping seat bolted to the stop plate, a vertical claw is fixed on the hub clamping seat, the top of the vertical claw is formed with a hub clamping hook inclined towards the hub support plate, the hub support plate has an inverted "L" shaped structure, and a protective pad is detachably connected to the top of the hub support plate.

[0010] The present invention is further configured such that the tire support plate has a fan-shaped structure, and the driving cylinder is fixed to the bottom of the tire support plate.

[0011] The present invention is further configured such that a bearing seat is fixed in the middle of the clamping base plate, and the rotating bushing is rotatably connected to the bearing seat through a bearing.

[0012] The outstanding and beneficial technical effects of this utility model compared to the prior art are:

[0013] 1. The off-road wheel clamping mechanism provided by this utility model uses a single drive cylinder to synchronously drive three sets of clamping jaw fixing plates to move radially at the same time, which facilitates the effective clamping of wheel hubs of different sizes and has a wider range of applications than traditional clamping devices; at the same time, the lifting cylinder is used to move the tire support plate up and down, thereby achieving the tire tilting state, which facilitates the assembly of large-size tires.

[0014] 2. The lifting method further provided by this utility model adopts the radial arrangement of the lifting cylinder, and drives the push-pull plate to make the X-shaped connecting rods on both sides of the slide rail move smoothly, making the lifting more stable.

[0015] 3. The radially arranged screw holes on the stop plate of this utility model facilitate the adjustment of the distance between the hub support plate and the hub clamping claw, so that the distance between the hub clamping claw and the hub support plate can meet the clamping requirements of different gear hubs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a partial structural diagram of the present invention. Figure 1 ;

[0018] Figure 3 This is a partial structural diagram of the present invention. Figure 2 ;

[0019] Figure 4 This is a partial structural diagram of the present invention. Figure 3 ;

[0020] Figure label:

[0021] 1-Clamping base plate; 10-Rotating bushing; 11-Synchronous tie rod; 12-Bearing seat; 13-Bearing;

[0022] 2-Hub clamping base plate;

[0023] 3-Gripper fixing plate; 30-Slide rail; 31-Stop plate;

[0024] 4-Wheel hub support plate; 40-Protective pad;

[0025] 5-Wheel hub clamping claw; 50-Wheel hub clamping seat; 51-Vertical claw; 52-Wheel hub clamping angled hook;

[0026] 6-Tire support plate; 60-Lifting cylinder; 61-Push-pull plate;

[0027] 7-Tire support plate; 70-Support rod; 71-Drive cylinder;

[0028] 8-"X" type linkage. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. See also: Figure 1 — Figure 4 :

[0030] A clamping mechanism for off-highway wheels includes a clamping base plate 1. Three identical hub clamping base plates 2 are circumferentially arranged on the clamping base plate. A claw fixing plate 3 is radially slidably mounted on the upper end of each hub clamping base plate 2. A hub support plate 4 and a hub clamping claw 5 are fixed to the inner end of the claw fixing plate 3. A tire support plate 6 driven by a lifting cylinder 60 is mounted on the claw fixing plate 3. A tire support plate 7 supported by a support rod 70 is arranged between adjacent hub clamping base plates 2. A radially arranged driving cylinder 71 is fixed on any of the tire support plates 7. Furthermore, the piston rod of the driving cylinder 71 drives the opposing gripper fixing plate 3 to slide radially. A rotating bushing 10 is rotatably connected to the middle of the clamping base plate 1. Three synchronous pull rods 11 are circumferentially hinged to the rotating bushing 10, and the outer ends of the three synchronous pull rods 11 are respectively hinged to the side walls of the three gripper fixing plates 3. When the driving cylinder 71 drives the gripper fixing plate 3 to slide radially, the synchronous pull rods 11 drive the other two synchronous pull rods 11 to move synchronously through the rotating bushing 10, and the other two gripper fixing plates 3 slide radially synchronously.

[0031] During implementation, the wheel hub is normally placed above the three sets of wheel hub support plates 4 by conveying. The hydraulic cylinder 71 drives several clamping claw fixing plates 3 to move radially in sync. During the movement, the wheel hub clamping claws 5 are pushed to move radially, thereby achieving the clamping effect on the wheel hub.

[0032] The tire is placed on the tire support plate 6. Since the assembly of the large gear tire requires a certain tilt angle, the lifting cylinder 60 drives the tire support plate 6 to move upward, thereby creating a tilt, which makes it easier for the tire to be installed on the wheel hub.

[0033] During the above operation, all three tire support plates 6 can be raised or lowered as required, which makes the actual assembly process more flexible and the tires easier to assemble.

[0034] Preferably, the lifting cylinder 60 is radially disposed on the upper end face of the gripper fixing plate 3, and a push-pull plate 61 is fixed to the output end of the lifting cylinder 60. Two sets of parallel "X"-shaped connecting rods 8 are disposed between the gripper fixing plate 3 and the tire support plate 6. A slide rail 30 is provided between the gripper fixing plate 3 and the tire support plate 6 for hinged sliding of the ends of the "X"-shaped connecting rods 8. The other two ends of the "X"-shaped connecting rods 8 are respectively hinged to the upper end face of the gripper fixing plate 3 and the lower end face of the tire support plate 6. The two ends of the push-pull plate 61 are respectively fixedly connected to the ends of the "X"-shaped connecting rods 8 hinged on the slide rail 30. When the piston rod of the lifting cylinder 60 pushes the push-pull plate 61 to move radially, the "X"-shaped connecting rods 8 drive the tire support plate 6 to move up and down.

[0035] In the above structure, the lifting cylinder 60 is driven radially, saving longitudinal installation space and keeping the lifting distance within a suitable range. Meanwhile, the use of an "X"-shaped connecting rod 8 makes lifting smoother and more stable.

[0036] Preferably, a stop plate 31 is fixed to the inner end of the clamping claw fixing plate 3, and the bottom of the hub support plate 4 and the hub clamping claw 5 are fixed to the upper end of the stop plate 31 by bolts, and the stop plate 31 is provided with a plurality of radially distributed screw holes.

[0037] During implementation, the stop plate 31 can be used to adjust the relative position of the wheel hub support plate and the wheel hub clamping claw 5, making it more applicable to different models of wheel hubs.

[0038] Preferably, the hub clamping claw 5 includes a hub clamping seat 50 bolted to the stop plate 31, a vertical claw 51 fixed on the hub clamping seat 50, and a hub clamping hook 52 inclined towards the hub support plate 4 at the top of the vertical claw 51. The hub support plate 4 has an inverted "L" shaped structure, and a protective pad 40 is detachably connected to the top of the hub support plate 4.

[0039] The protective pad 40 can buffer the wheel hub, and the clamping hook 52 can effectively clamp the edge of the wheel hub to prevent loosening in the vertical direction.

[0040] Preferably, the tire support plate 7 has a fan-shaped structure, and the drive cylinder 71 is fixed to the bottom of the tire support plate 7.

[0041] In the above structure, the drive cylinder 71 is positioned below the tire support plate 7. During use, the tire or wheel hub above will not affect the normal operation of the cylinder.

[0042] Preferably, a bearing seat 12 is fixed in the middle of the clamping base plate 1, and the rotating bushing 10 is rotatably connected to the bearing seat 12 through a bearing 13.

[0043] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A clamping mechanism for an off-highway vehicle wheel, characterized by, The system includes a clamping base plate (1), three sets of identical wheel hub clamping base plates (2) arranged circumferentially on the clamping base plate, a clamping claw fixing plate (3) radially sliding on the upper end of the wheel hub clamping base plate (2), a wheel hub support plate (4) and a wheel hub clamping claw (5) fixed on the inner end of the clamping claw fixing plate (3), a tire support plate (6) driven by a lifting cylinder (60) is provided on the clamping claw fixing plate (3), a tire support plate (7) supported by a support rod (70) is provided between adjacent wheel hub clamping base plates (2), and a radially arranged driving cylinder (71) is fixed on any tire support plate (7), and the driving cylinder... The piston rod of (71) drives the opposing gripper fixing plate (3) to slide radially. The middle part of the clamping base plate (1) is rotatably connected to a rotating bushing (10). Three synchronous pull rods (11) are circumferentially hinged on the rotating bushing (10), and the outer ends of the three synchronous pull rods (11) are respectively hinged to the side walls of the three gripper fixing plates (3). When the driving cylinder (71) drives the gripper fixing plate (3) to slide radially, the synchronous pull rods (11) drive the other two synchronous pull rods (11) to move synchronously through the rotating bushing (10), and the other two gripper fixing plates (3) slide radially synchronously.

2. A non-highway vehicle wheel clamping mechanism according to claim 1 wherein, The lifting cylinder (60) is radially disposed on the upper end face of the gripper fixing plate (3). A push-pull plate (61) is fixed to the output end of the lifting cylinder (60). Two sets of parallel "X"-shaped connecting rods (8) are disposed between the gripper fixing plate (3) and the tire support plate (6). A slide rail (30) is provided between the gripper fixing plate (3) and the tire support plate (6) for hinged sliding of the ends of the "X"-shaped connecting rods (8). The other two ends of the "X"-shaped connecting rods (8) are respectively hinged to the upper end face of the gripper fixing plate (3) and the lower end face of the tire support plate (6). The two ends of the push-pull plate (61) are respectively fixedly connected to the ends of the "X"-shaped connecting rods (8) hinged on the slide rail (30). When the piston rod of the lifting cylinder (60) pushes the push-pull plate (61) to move radially, the "X"-shaped connecting rods (8) drive the tire support plate (6) to move up and down.

3. A non-highway vehicle wheel clamping mechanism as defined in claim 1 wherein, The inner end of the clamp fixing plate (3) is fixed with a stop plate (31). The bottom of the hub support plate (4) and the hub clamping claw (5) are fixed to the upper end of the stop plate (31) by bolts, and the stop plate (31) has several radially distributed screw holes.

4. A non-highway vehicle wheel clamping mechanism as defined in claim 3 wherein, The hub clamping claw (5) includes a hub clamping seat (50) bolted to the stop plate (31). A vertical claw (51) is fixed on the hub clamping seat (50). The top of the vertical claw (51) is formed with a hub clamping hook (52) inclined towards the hub support plate (4). The hub support plate (4) has an inverted "L" shaped structure. A protective pad (40) is detachably connected to the top of the hub support plate (4).

5. A non-highway vehicle wheel clamping mechanism as defined in claim 1 wherein, The tire support plate (7) has a fan-shaped structure, and the drive cylinder (71) is fixed to the bottom of the tire support plate (7).

6. A non-highway vehicle wheel clamping mechanism as defined in claim 1 wherein, A bearing seat (12) is fixed in the middle of the clamping base plate (1), and the rotating bushing (10) is rotatably connected to the bearing seat (12) through a bearing (13).

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