CN218025257U - Lifting mechanism of automobile double-roller rotating hub test bed - Google Patents

Abstract

The utility model discloses a car twin drum changes elevating system of hub test bench, elevating system installs between two cylinders for with wheel jack-up, wherein, elevating system can include: the fixing frame is fixed on a rotating hub rack of the automobile double-roller rotating hub test bed; the pair of drivers are fixedly suspended at two ends of the fixing frame so as to be positioned at a slewing mechanism of the automobile double-roller rotating hub test bed; and the lifting frame is in driving connection with the telescopic rods of the pair of drivers so as to jack up the wheels. The utility model discloses an elevating system is exported by original centre and is become both ends and exert oneself, and the atress is more even, and stability increases, and the intermediate space that vacates simultaneously can be easy to assemble rotation mechanism, has improved the space utilization of car twin drum commentaries on classics hub test bench greatly.

Description

Lifting mechanism of automobile double-roller rotating hub test bed

Technical Field

The utility model relates to a whole car test field specifically relates to a car twin drum changes elevating system of hub test bench.

Background

When the whole vehicle test is carried out in a laboratory, two whole vehicle racks (which can be understood as a whole vehicle running machine) can be selected. One is a power assembly rack, the tire is disassembled, and the outer edge of the half shaft is connected with a dynamometer through a flange connecting shaft; the other type is a whole vehicle rotating hub, the vehicle tire does not need to be dismantled and is coupled with a roller, and the roller is used for reasonably loading the tire, so that the vehicle approaches to the running state on a real road when running on a rotating hub rack. The whole vehicle rotating hub is divided into a single-roller rotating hub (one roller for each wheel) and a double-roller rotating hub (two rollers for each wheel). The single-roller rotating hub is generally used for measuring the economic (oil consumption or power consumption) and emission indexes of the whole vehicle, and has no steering function. When the function of intelligently driving the whole vehicle is tested, the whole vehicle needs to keep the steering function, a double-roller rotating hub is generally adopted, a slewing mechanism is additionally arranged below the double rollers, and when the wheels steer, the rollers are driven by the slewing mechanism to rotate along with the wheels.

When the whole vehicle is tested on the double-roller rotating hub test bed, because the pits are formed between the double rollers, the whole vehicle can sink into the pits between the double rollers in the process of loading and unloading the rotating hub stand, and the loading and unloading processes are very inconvenient. Therefore, a lifting mechanism is required to be installed in the roller, and in the process of rotating the hub up and down, the lifting mechanism is used for filling up the pits, so that the hub can be conveniently rotated up and down. During normal testing, the lifting mechanism is dropped, the wheel 100 contacts with the double roller 200, and is separated from the lifting mechanism 1, as shown in fig. 1.

The prior lifting mechanism uses a single air spring 10 to achieve lifting of the mechanism, as shown in fig. 2. However, such a lifting mechanism has the following problems:

1. the air spring 10 is arranged in the middle of the mechanism, and the middle of the mechanism is stressed unevenly, so that the stability of the mechanism is poor;

2. the mechanism has large height dimension and large occupied space, and because the swing mechanism is additionally arranged below the double rollers, the available space is very small, so the existing lifting mechanism cannot be installed.

Disclosure of Invention

The utility model aims at providing a car twin drum changes elevating system of hub test bench to solve above-mentioned problem. Therefore, the utility model discloses a technical scheme as follows:

a lifting mechanism of a double-roller rotating hub test bed for an automobile, which is installed between two rollers and used for jacking up wheels, wherein the lifting mechanism can comprise:

the fixing frame is fixed on a rotating hub rack of the automobile double-roller rotating hub test bed;

the pair of drivers are fixedly suspended at two ends of the fixing frame so as to be positioned at a slewing mechanism of the automobile double-roller rotating hub test bed; and

the lifting frame is in driving connection with the telescopic rods of the pair of drivers so as to jack up the wheels.

In a preferred embodiment, the fixing frame comprises two upright posts and a lower supporting plate, the two upright posts are fixedly erected on the upper surface of the lower supporting plate, and the pair of drivers are fixed on the lower surface of the lower supporting plate.

In a preferred embodiment, a mounting plate is fixed on the outer side of the upright post, and the mounting plate is fixed on the rotating hub rack.

In a preferred embodiment, the upright is positioned directly above the driver and forms a U-shape with the lower tray.

In a preferred embodiment, the upright post is provided with a C-shaped groove, and a telescopic rod of the driver extends into the C-shaped groove and is in driving connection with the lifting frame.

In a preferred embodiment, the lifting frame comprises an upper cross beam and two support legs fixed at two ends of the upper cross beam, guide blocks are fixed on the outer sides of the support legs, and the guide blocks are clamped in the C-shaped grooves and abut against the top ends of the telescopic rods. Preferably, a contact head is mounted at the top end of the telescopic rod, and the contact head is abutted to the lower surface of the guide block.

In a preferred embodiment, sliding strips are fixed on two sides of the supporting leg and are in sliding joint with two sides of the opening of the C-shaped groove, so that the supporting leg can slide up and down along the upright post.

In a preferred embodiment, the slide bar is L-shaped, and the upright post has L-shaped portions on both sides of the opening of the C-shaped slot, the L-shaped portions being complementary to the slide bar.

In a preferred embodiment, a reinforcing rib plate is arranged between the supporting leg and the upper cross beam. Preferably, the reinforcing rib plate is substantially in the shape of an isosceles right triangle, and two right-angled sides of the reinforcing rib plate are respectively fixed to the supporting legs and the upper cross beam.

In a preferred embodiment, a replaceable fender is mounted on an upper surface of the upper cross member. Preferably, the guard plate is provided with anti-slip stripes.

In a preferred embodiment, the actuator may be a pneumatic cylinder, a hydraulic cylinder, or an electric push rod.

The utility model discloses an elevating system is exported by original centre and is become both ends and exert oneself, and the atress is more even, and stability increases, and the intermediate space that vacates simultaneously can be easy to assemble rotation mechanism, has improved the space utilization of car twin drum commentaries on classics hub test bench greatly.

Drawings

FIG. 1 is a schematic diagram of the operation of the lifting mechanism of the automotive dual-drum hub test stand, wherein a) the lifting mechanism is shown in a lowered position and b) the lifting mechanism is shown in a jacked position;

FIG. 2 is a perspective view of a prior art lift mechanism;

fig. 3 is a perspective view of a lifting mechanism of an automobile dual-roller rotating hub test bed according to an embodiment of the present invention;

FIG. 4 is an exploded perspective view of the lift mechanism of the automotive dual drum hub test stand shown in FIG. 3;

FIG. 5 is a cross-sectional view of the lift mechanism of the automotive dual drum hub test stand shown in FIG. 3;

FIG. 6 is a front view of the lift mechanism of the automotive dual drum hub test stand shown in FIG. 3;

fig. 7 isbase:Sub>A sectional view of the elevating mechanism of the automotive twin drum hub test stand taken along linebase:Sub>A-base:Sub>A in fig. 6.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the objects, features and advantages of the invention can be more clearly understood. It should be understood that the embodiments shown in the drawings are not intended as limitations on the scope of the invention, but are merely illustrative of the true spirit of the technical solution of the invention.

In the following description, for the purposes of illustrating various disclosed embodiments, certain specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. One skilled in the relevant art will recognize, however, that the embodiments may be practiced without one or more of the specific details. In other instances, well-known devices, structures and techniques associated with this application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

Throughout the specification and claims, the word "comprise" and variations thereof, such as "comprises" and "comprising," are to be understood as an open, inclusive meaning, i.e., as being interpreted to mean "including, but not limited to," unless the context requires otherwise.

Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

As used in this specification and the appended claims, the singular forms "a", "an", and "the" include plural referents unless the context clearly dictates otherwise. It should be noted that the term "or" is generally employed in its sense including "and/or" unless the context clearly dictates otherwise.

In the following description, for the sake of clarity, the structure and operation of the present invention will be described with the aid of directional terms, but the terms "front", "rear", "left", "right", "outer", "inner", "outer", "inward", "upper", "lower", etc. should be understood as words of convenience and not as words of limitation.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it should also be noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and can include, for example, fixed connections, detachable connections, or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Referring now to fig. 3-7, a lifting mechanism 1 of a dual-roller hub test stand for an automobile is described, wherein the lifting mechanism 1 is installed between two rollers for jacking up a wheel, wherein the lifting mechanism 1 may include a fixed frame 11, a pair of drivers 12 and a lifting frame 13. Wherein, the fixed mount 11 is fixed on a rotary hub rack (not shown) of the automobile double-roller rotary hub test stand; a pair of drivers 12 are fixedly suspended at two ends of the fixed frame 11 so as to be positioned at a rotating mechanism of the automobile double-roller rotating hub test bed; and the lifting frame 13 is in driving connection with the telescopic rods 121 of the pair of drivers 12 so as to jack up the wheels. The lifting mechanism 1 is changed from the original middle output force to the output force at two ends, the stress is more uniform, the stability is increased, the vacant middle space can facilitate the installation of the swing mechanism, and the space utilization rate of the automobile double-roller rotating hub test bed is greatly improved.

As shown in fig. 4 and 5, the fixing frame 11 includes two upright posts 111 and a lower supporting plate 112. Two uprights 111 are fixed (e.g., by screws) to stand on the upper surface of the lower plate 112. A pair of actuators (e.g., air cylinders) 12 are fixed (e.g., by screws) on the lower surface of the lower plate 112. In the present embodiment, two vertical columns 111 are respectively located right above the two drivers 12 and form a U-shape with the lower tray 112. The two drivers 12 are integrated into a whole by the lower supporting plate 112, so as to realize synchronous movement. Each part of the fixing frame 11 is fixedly connected through bolts, so that the fixing frame is convenient to disassemble, assemble and maintain. The screw is a socket head cap screw and the screw hole is a counter bore to avoid interference with the driver 12.

The outer side of the column 111 is fixed (e.g. by socket head cap screws) with a mounting plate 14, the mounting plate 14 being fixed (e.g. by socket head cap screws) to the hub turret. Therefore, the whole mechanism can be suspended on the rotating hub rack, the lower space is large, and other devices such as a rotating mechanism and the like can be conveniently installed.

In the present embodiment, the vertical column 111 is a square column. The four corners of the lower end of the upright 111 are provided with receding parts 1111 for facilitating the bolt fastening of the driver 12. The length of the relief 1111 is longer than the set screw of the driver 12 (e.g., 1-2cm long) to facilitate operation.

The upright 111 is provided with a longitudinally extending C-shaped groove 1112 and the lower plate 112 is provided with a through hole 1121 in aligned communication with the C-shaped groove 1112. The telescopic rod 121 of the driver 12 can extend into the C-shaped groove 1112 through the through hole 1121 and is in driving connection with the lifting frame 13, so that the lifting frame 13 is driven to ascend and descend. A plurality of fixing screw holes (not shown) are disposed around the through hole 1121 of the lower support plate 112 for fixing the upright 111 and the lower support plate 112 together.

The crane 13 comprises an upper beam 131 and two legs 132 fixed to both ends of the upper beam 131. The upper beam 131 and the leg 132 are each a rectangular parallelepiped structure. The upper cross member 131 has a width slightly smaller than the minimum spacing between the two rollers and a length substantially the same as the axial length of the rollers. In one embodiment, the upper cross beam 131 has dimensions of 650mm (length) 110mm (width) 35mm (thickness). A guide block 133 is fixed to the outside of the leg 132, and the guide block 133 is caught in the C-shaped groove 1112 and abuts against the tip end of the telescopic rod 121 of the driver 12. Therefore, when the telescopic rod 121 of the driver 12 extends out, the whole lifting frame 13 can be jacked up through the guide block 133; when the telescopic rod 121 retracts, the lifting frame 13 descends along with the telescopic rod 121 under the action of gravity. Preferably, the top end of the telescopic rod 121 is mounted with a contact head 15, and the contact head 15 abuts against the lower surface of the guide block 133. Through the contact head 15, the contact area between the telescopic rod 121 and the guide block 133 can be increased, so that the lifting is more stable.

As shown in fig. 4-7, the slide bars 134 are fixedly mounted on both sides of one surface of the leg 132 facing the upright 111, and the slide bars 134 are slidably engaged with both sides of the opening of the C-shaped groove 1112 of the upright 111, so that the leg 132 can slide up and down along the upright 111, and the lifting frame 13 can be lifted and lowered more smoothly. In this embodiment, the slide 134 is an L-shaped oil-free linear slide, and the upright 111 has L-shaped portions 1113 at two sides of the opening of the C-shaped groove 1112, and the L-shaped portions 1113 complement the slide 134 to form a sliding rail structure. Since the slide 134 is fixed to the leg 132 by a screw, it can be replaced very conveniently when the slide 134 is worn more.

It should be understood that the C-shaped groove 1112 could be replaced by a "male" groove and the guide block 133 could be "male" so that both form a slider track structure to allow the crane 13 to slide up and down along the upright 111. In this case, the slide bar 134 may be omitted.

As shown in fig. 5, a reinforcing rib 135 is provided between the leg 132 and the upper cross member 131 to improve the load-bearing capacity of the upper cross member 131. Preferably, the stiffener plate 135 is substantially in the shape of an isosceles right triangle, and both sides of the right angle are fixed (e.g., by hexagon socket head cap screws) to the upper cross member 131 and the leg 132, respectively. Preferably, the corners of the stiffener plates 135 are cut away to avoid accidental injury during installation.

In addition, in order to prevent the upper cross member 131 from being worn by direct contact with the tire, a replaceable protector plate 16 is mounted on the upper surface of the upper cross member 131. In the present embodiment, the protector plate 16 is fixed to the upper cross member 131 by six screws. When the guard plate 16 is worn, the bolt is only required to be unscrewed to be detached, a new guard plate is replaced, and then the locking is carried out, so that the operation is very convenient. The length and width of the guard plate 16 are substantially the same as those of the upper cross member 131. Preferably, the cover 16 is provided with anti-slip stripes to increase the coefficient of friction and avoid wheel slip.

The fixing frame 11 and the lifting frame 13 can be made of steel with enough strength to avoid deformation in the using process and influence on the service life.

The actuator 12 may be a pneumatic cylinder, a hydraulic cylinder, an electric push rod, or the like. Preferably, the driver 12 is a cylinder, because the cylinder has the advantages of small volume, large thrust, low installation and maintenance cost, and the like. The lifting speed of the lifting mechanism 1 can be realized by controlling the air inlet speed and the air exhaust speed of the air cylinder, and the lifting mechanism is very convenient.

The preferred embodiments of the present invention have been described in detail, but it should be understood that various changes and modifications of the invention can be made by those skilled in the art after reading the above teaching of the present invention. Such equivalents are intended to fall within the scope of the claims appended hereto.

Claims (10)

1. The utility model provides a lifting mechanism of car twin drum commentaries on classics hub test bench, lifting mechanism installs between two cylinders for jack-up the wheel, its characterized in that, lifting mechanism includes:

the fixing frame is fixed on a rotating hub rack of the automobile double-roller rotating hub test bed;

the pair of drivers are fixedly suspended at two ends of the fixing frame so as to be positioned at a swing mechanism of the automobile double-roller rotating hub test bed; and

and the lifting frame is in driving connection with the telescopic rods of the pair of drivers so as to jack up the wheels.

2. The elevating mechanism of a dual drum hub test stand for automobiles according to claim 1, wherein said fixing frame comprises two upright posts and a lower plate, two said upright posts are fixedly erected on the upper surface of said lower plate, and said pair of drivers are fixed on the lower surface of said lower plate.

3. The lifting mechanism of a double-roller rotating hub test bed of an automobile as claimed in claim 2, wherein a mounting plate is fixed on the outer side of the upright post, and the mounting plate is fixed on the rotating hub rack.

4. The lift mechanism of a dual drum hub test stand for an automobile of claim 2, wherein the upright is positioned directly above the driver and forms a U-shape with the bottom plate.

5. The lifting mechanism of the automobile double-roller rotating hub test bed as claimed in claim 4, wherein the upright post is provided with a C-shaped groove, and a telescopic rod of the driver extends into the C-shaped groove and is in driving connection with the lifting frame.

6. The lifting mechanism of the automobile double-roller rotating hub test bed as claimed in claim 5, wherein the lifting frame comprises an upper cross beam and two support legs fixed at two ends of the upper cross beam, guide blocks are fixed at the outer sides of the support legs, and the guide blocks are clamped in the C-shaped grooves and abut against the top ends of the telescopic rods.

7. The lift mechanism for a dual drum hub test stand of claim 6, wherein a slide is fixed to both sides of said leg, said slide being slidably engaged to both sides of the opening of said C-shaped channel, such that said leg can slide up and down along said post.

8. The lifting mechanism of the automobile double-roller rotating hub test bed according to claim 6, characterized in that a reinforcing rib plate is arranged between the supporting leg and the upper cross beam.

9. The lift mechanism for a dual-drum hub test stand of claim 6, wherein the upper cross member has a replaceable fender mounted on an upper surface thereof.

10. The lift mechanism of a dual drum hub test stand for automobiles according to any one of claims 1 to 9, wherein said actuator comprises an air cylinder.

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