CN218021815U - Steering mechanism and unpowered transfer trolley - Google Patents
Steering mechanism and unpowered transfer trolley Download PDFInfo
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- CN218021815U CN218021815U CN202221683021.4U CN202221683021U CN218021815U CN 218021815 U CN218021815 U CN 218021815U CN 202221683021 U CN202221683021 U CN 202221683021U CN 218021815 U CN218021815 U CN 218021815U
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Abstract
The utility model relates to an article transportation field, concretely relates to steering mechanism and unpowered transfer car (buggy). The steering mechanism comprises an axle, a steering arm, a steering pull rod, a steering knuckle arm and a steering fork, the axle is arranged along the left and right directions, the steering arm is rotatably assembled at the middle position of the axle, the steering arm is hinged with the steering pull rod, the steering pull rod is hinged with the steering knuckle arm, the steering knuckle arm is fixedly connected with the steering fork, a vertical surface of the steering arm facing the axle is arranged on the steering arm, the plane perpendicular to the axis of the axle and passing through the rotating axis of the steering arm is used as a reference plane, a steering limiting part is arranged at the middle position of the axle, a left vertical limiting surface and a right vertical limiting surface are arranged on the steering limiting part and located on two sides of the reference plane, the left vertical limiting surface is used for limiting and matching with the vertical surface of the steering arm when the steering arm rotates to the left side to a first set angle, and the right vertical limiting surface is used for limiting and matching with the vertical surface of the steering arm when the steering arm rotates to the right side to a second set angle.
Description
Technical Field
The utility model relates to an article transportation field, concretely relates to steering mechanism and unpowered transfer car (buggy).
Background
At present, an unpowered transfer trolley generally adopts an omnidirectional wheel mode to steer, the omnidirectional wheel is convenient to move transversely, but has larger weight and volume, and the steering is not easy to control when the load is heavier.
In order to solve the problems, the chinese utility model patent with the granted announcement number of CN207015426U discloses a four-wheel steering mechanism for a trailer, which comprises a front axle, a front steering axle mechanism and wheels, wherein the front steering axle mechanism comprises a front steering rod, a front steering pull rod, a front steering knuckle arm and a front steering fork, the front steering rod is rotatably assembled on the front axle, the front steering rod has a vertical surface facing the axle, the front end of the front steering rod is used for being connected with a traction rod, the rear end of the front steering rod is hinged with the front steering pull rod, the front steering pull rod is hinged with the front steering knuckle arm, the front steering knuckle arm is fixedly connected with the front steering fork, and the wheels are fixed on the front steering fork. When the trailer steers, the traction rod drives the front steering rod to rotate, the front steering rod drives the front steering pull rod to move, and the front steering pull rod drives the front steering knuckle arm and the front steering fork to move, so that the front wheel steers. The steering mechanism has the advantages of small weight and volume and easy control.
In the technology, because the rotation angle of the front steering rod is not limited, when the rotation angle of the front steering rod is larger, the wheels and the frame are easy to scratch, and the normal transportation of the trailer is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a steering mechanism to solve the problem that the rotation angle of a front steering rod in the prior art is not limited so as to cause the rubbing between wheels and a frame; an object of the utility model is also to provide an unpowered transfer car (buggy) to solve above-mentioned problem.
In order to achieve the above object, the utility model discloses steering mechanism's technical scheme is:
the steering mechanism comprises an axle, a steering arm, a steering pull rod, a steering knuckle arm and a steering fork, wherein the steering pull rod, the steering knuckle arm and the steering fork are respectively provided with two parts, the axle is arranged along the left and right direction, the steering arm is rotatably assembled at the middle position of the axle, the steering arm is hinged with the steering pull rod, the steering pull rod is hinged with the steering knuckle arm, the steering knuckle arm is fixedly connected with the steering fork, a vertical surface of the steering arm facing the axle is arranged on the steering arm, a plane which is perpendicular to the axis of the axle and passes through the rotating axis of the steering arm is used as a reference plane, a steering limiting part is arranged at the middle position of the axle, a left vertical limiting surface and a right vertical limiting surface which are positioned at two sides of the reference plane are arranged on the steering limiting part, the left vertical limiting surface is in limiting fit with the vertical surface of the steering arm when the steering arm rotates to the left side to a first set angle, and the right vertical limiting surface is in limiting fit with the vertical surface of the steering arm when the steering arm rotates to the second set angle.
The beneficial effects are that: by arranging the steering limiting part in the middle of the axle, when the steering arm rotates to a corresponding set angle along with the traction rod, the vertical face of the steering arm on the steering arm can be in limit fit with the left vertical limiting face or the right vertical limiting face of the steering limiting part, so that mechanical limiting is realized, the phenomenon that wheels and a frame are scratched due to overlarge rotating angle of the steering arm is avoided, normal steering of a transfer trolley is ensured, and the transfer safety is improved.
As a further improvement, the left vertical limiting surface and the right vertical limiting surface are vertical straight surfaces.
The beneficial effects are that: design like this, can increase the area of contact of the vertical spacing face of left and right and the vertical face of steering arm to it is spacing to stabilize to carry on the steering arm.
As a further improvement, the steering limiting member is a steering limiting plate.
The beneficial effects are that: compared with two steering limiting blocks, the design reduces the fixing process of the steering limiting part.
As a further improvement, the left vertical limiting surface and the right vertical limiting surface are connected in a smooth transition mode through vertical cambered surfaces.
The beneficial effects are that: by the design, the problem of stress concentration is avoided.
As a further refinement, the first set angle is equal to the second set angle.
The beneficial effects are that: the design is such that the steering angle of the steering arm to the left and to the right is the same.
As a further improvement, the axle is a front axle, and the steering stopper is provided on a front side of the axle.
The beneficial effects are that: by the design, the steering limiting part can be fixed on the front side of the front axle, and the fixing of the steering limiting part is facilitated.
As a further improvement, the two steering rods are articulated to the steering arm by means of a common articulation shaft.
The beneficial effects are that: because only one common hinge shaft is arranged on the steering arm, the structure of the steering arm is simplified, and meanwhile, the assembly of two steering pull rods and the steering arm is facilitated.
As a further improvement, the steering limiting parts are two steering limiting blocks arranged at intervals in the left-right direction, and the left vertical limiting surface and the right vertical limiting surface are respectively arranged on the two steering limiting blocks.
The beneficial effects are that: by the design, the steering limiting part is made of less materials, and the cost is reduced.
In order to realize the purpose, the utility model discloses unpowered transfer car (buggy)'s technical scheme is:
the unpowered transfer trolley comprises a frame and a steering mechanism arranged on the frame, wherein the steering mechanism comprises an axle, two steering arms, a steering pull rod, a steering knuckle arm and a steering fork, the two steering pull rods, the steering knuckle arm and the steering fork are arranged, the axle is arranged along the left and right direction, the steering arm is assembled at the middle position of the axle in a rotating mode and is hinged to the steering pull rod, the steering pull rod is hinged to the steering knuckle arm, the steering knuckle arm is fixedly connected with the steering fork, a vertical surface of the steering arm facing the axle is arranged on the steering arm, a plane perpendicular to the axis of the axle and passing through the rotating axis of the steering arm is used as a reference plane, a steering limiting part is arranged at the middle position of the axle, a left vertical limiting surface and a right vertical limiting surface which are located on two sides of the reference plane are arranged on the steering limiting part, the left vertical limiting surface is used for limiting and matching with the vertical surface of the steering arm when the steering arm rotates to the left side to a first set angle, and the right vertical limiting and matching with the vertical surface of the steering arm when the steering arm rotates to a second set angle.
The beneficial effects are that: by arranging the steering limiting part in the middle of the axle, when the steering arm rotates to a corresponding set angle along with the traction rod, the vertical face of the steering arm on the steering arm can be in limit fit with the left vertical limiting face or the right vertical limiting face of the steering limiting part, so that mechanical limiting is realized, the phenomenon that wheels and a frame are scratched due to overlarge rotating angle of the steering arm is avoided, normal steering of a transfer trolley is ensured, and the transfer safety is improved.
As a further improvement, the left vertical limiting surface and the right vertical limiting surface are vertical straight surfaces.
The beneficial effects are that: design like this, can increase the area of contact of the vertical spacing face of left and right and the vertical face of steering arm to it is spacing to stabilize to carry on the steering arm.
As a further improvement, the steering limiting member is a steering limiting plate.
The beneficial effects are that: compare in two and turn to the stopper, design like this, reduced the fixed process that turns to the locating part.
As a further improvement, the left vertical limiting surface and the right vertical limiting surface are connected in a smooth transition mode through vertical cambered surfaces.
The beneficial effects are that: by the design, the problem of stress concentration is avoided.
As a further refinement, the first set angle is equal to the second set angle.
The beneficial effects are that: the design is such that the steering angle of the steering arm to the left and to the right is the same.
As a further improvement, the axle is a front axle, and the steering stopper is provided on a front side of the axle.
The beneficial effects are that: by the design, the steering limiting part can be fixed on the front side of the front axle, and the fixing of the steering limiting part is facilitated.
As a further improvement, the two steering rods are articulated to the steering arm by means of a common articulation shaft.
The beneficial effects are that: because only one common hinge shaft is arranged on the steering arm, the structure of the steering arm is simplified, and meanwhile, the assembly of two steering pull rods and the steering arm is facilitated.
As a further improvement, the steering limiting parts are two steering limiting blocks arranged at intervals in the left-right direction, and the left vertical limiting surface and the right vertical limiting surface are respectively arranged on the two steering limiting blocks.
The beneficial effects are that: by the design, the steering limiting part is made of less materials, and the cost is reduced.
As a further improvement, the frame is provided with an avoiding notch for avoiding wheels.
The beneficial effects are that: due to the design, the wheels can be prevented from being scratched and rubbed with the frame, the steering angle of the wheels can be increased, and the reduction of the steering radius of the transfer trolley is facilitated.
Drawings
FIG. 1 is a schematic structural view of the unpowered transfer trolley of the present invention;
FIG. 2 is an enlarged view taken at A in FIG. 1;
FIG. 3 is a schematic view of the structure of FIG. 1 from another perspective;
FIG. 4 is a schematic view of the steering arm of FIG. 1;
fig. 5 is a schematic structural view of the steering link of fig. 1.
In the figure: 11. a frame; 12. an axle; 13. a draw bar; 14. a steering arm; 15. a steering tie rod; 16. a knuckle arm; 17. a steering fork; 18. a wheel; 19. a steering limit plate; 20. a steering arm vertical plane; 21. a left vertical limiting surface; 22. a right vertical limiting surface; 23. a vertical arc surface; 24. a rotating shaft; 25. a common hinge shaft; 26. a joint; 27. a ball stud; 28. avoiding the gap.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, which may be present, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" or the like does not exclude the presence of another like element in a process, method, article, or apparatus that comprises the element. Furthermore, the terms "front", "back", "upper", "lower", "left" and "right" are based on the orientation and positional relationship shown in the drawings and are only for convenience of description of the present invention, and do not indicate that the device or component referred to must have a specific orientation, and therefore, should not be construed as limiting the present invention.
The features and properties of the present invention are described in further detail below with reference to examples.
The utility model discloses embodiment 1 of unpowered transfer car (buggy):
as shown in fig. 1 and 3, the unpowered transfer vehicle comprises a vehicle frame 11, a steering mechanism is arranged on the vehicle frame 11, the steering mechanism comprises an axle 12, a steering arm 14, a steering tie rod 15, a steering knuckle arm 16 and a steering fork 17, and two steering tie rods 15, two steering knuckle arms 16 and two steering forks 17 are arranged.
In the present embodiment, the axle 12 is a front axle, and the arrangement direction of the axle 12 in fig. 1 is the left-right direction. As shown in fig. 1 and 4, the steering arm 14 is rotatably mounted on the axle 12 at an intermediate position through a rotating shaft 24, a front end of the steering arm 14 is hinged to the drawbar 13, a rear end of the steering arm 14 is hinged to the steering tie rod 15, the steering tie rod 15 is hinged to the knuckle arm 16, the knuckle arm 16 is fixedly connected to the steering fork 17, and the steering fork 17 is connected to the wheel 18.
As shown in fig. 1 and 2, the steering arm 14 is provided with a steering arm vertical surface 20 facing the axle 12, i.e., the steering arm vertical surface 20 faces rearward; the axle turning device is characterized in that a plane which is perpendicular to the axis of an axle 12 and passes through the rotation axis of a steering arm 14 is used as a reference plane, a steering limiting plate 19 is arranged in the middle of the axle 12, the steering limiting plate 19 is welded and fixed on the front side of the axle 12, a left vertical limiting surface 21 and a right vertical limiting surface 22 which are located on two sides of the reference plane are arranged on the steering limiting plate 19, the left vertical limiting surface 21 is used for being in limiting fit with a steering arm vertical surface 20 when the steering arm 14 rotates leftwards to a first set angle, and the right vertical limiting surface 22 is used for being in limiting fit with the steering arm vertical surface 20 when the steering arm 14 rotates rightwards to a second set angle, so that the situation that the wheels 18 are scratched with the frame 11 due to overlarge rotation angle of the steering arm 14 is avoided. The steering limit plate 19 constitutes a steering limit member.
Preferably, the left vertical limiting surface 21 and the right vertical limiting surface 22 are symmetrically arranged on both sides of the reference plane, i.e. the first set angle is equal to the second set angle. Wherein, the left vertical limiting surface 21 and the right vertical limiting surface 22 are vertical straight surfaces. In other embodiments, the left vertical limiting surface and the right vertical limiting surface may both be vertical cambered surfaces.
In this embodiment, the steering limiting plate 19 is further provided with a vertical arc surface 23, and the left vertical limiting surface 21 and the right vertical limiting surface 22 are connected through the vertical arc surface 23 in a smooth transition manner, so that the problem of stress concentration is avoided.
As shown in fig. 1, 4 and 5, one end of the tie rod 15 is provided with a joint 26, the other end of the tie rod 15 is provided with a ball stud 27, and the tie rod 15 is hinged to the knuckle arm 16 through the ball stud 27; the steering arm 14 is provided with a common hinge shaft 25, and the joints 26 of the two steering tie rods 15 are connected to the common hinge shaft 25, i.e. the two steering tie rods 15 are hinged with the steering arm 14 through the common hinge shaft 25. Wherein the tie rod 15 is an adjustment tie rod, the distance between the joint 26 and the ball stud 27 can be fine-tuned, thereby facilitating the connection of the tie rod 15 between the steering arm 14 and the knuckle arm 16.
As shown in fig. 1, the frame 11 is further provided with an avoidance notch 28, so that the turning angle of the wheels 18 can be increased while the wheels 18 are prevented from being scratched with the frame 11, and the turning radius of the transfer trolley can be reduced.
When the transfer vehicle steers, the traction rod 13 is operated by manpower to swing left and right, the traction rod 13 drives the steering arm 14 to rotate, the steering arm 14 drives the steering pull rod 15 to move, and the steering pull rod 15 drives the knuckle arm 16 and the steering fork 17 to move, so that the wheels 18 are steered. After the steering arm 14 rotates with the traction rod 13 by a set angle, the vertical surface 20 of the steering arm on the steering arm 14 is in limit fit with the left vertical limit surface 21 or the right vertical limit surface 22 of the steering limit plate 19, so that mechanical limit is realized, the wheels 18 and the frame 11 are prevented from being scratched, the normal steering of the transfer trolley is ensured, and the transfer safety is improved.
The utility model discloses embodiment 2 of unpowered transfer car (buggy):
the present embodiment is different from embodiment 1 in that, in embodiment 1, the steering limiting member is a steering limiting plate. In this embodiment, turn to the locating part for controlling two that arrange turn to the stopper, left vertical spacing face and right vertical spacing face set up respectively on two turn to the stopper.
The utility model discloses embodiment 3 of unpowered transfer car (buggy):
the difference between the present embodiment and embodiment 1 is that in embodiment 1, the left vertical limiting surface and the right vertical limiting surface are transitionally connected by an arc surface. In this embodiment, the left vertical limiting surface and the right vertical limiting surface are in transition connection through a straight surface.
The utility model discloses embodiment 4 of unpowered transfer car (buggy):
the present embodiment is different from embodiment 1 in that in embodiment 1, the axle is a front axle, and the steering stopper is provided on the front side of the axle. In the present embodiment, the steering stopper is provided on the rear side of the axle when the axle is the front axle.
The utility model discloses embodiment 5 of unpowered transfer car (buggy):
the present embodiment differs from embodiment 1 in that in embodiment 1, two steering rods are hinged to a steering arm via a common hinge shaft. In this embodiment, two hinge shafts are arranged on the steering arm at intervals in the left-right direction, and the two steering rods are respectively hinged to the steering arm through the hinge shafts.
The embodiment of the steering mechanism of the utility model, the structure of the steering mechanism is the same as that of any one of the embodiments 1 to 5 of the unpowered transfer trolley, and the description is omitted.
The above description is only for the preferred embodiment of the present invention, and the present invention is not limited thereto, the protection scope of the present invention is defined by the claims, and all structural changes equivalent to the contents of the description and drawings of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. Steering mechanism, including axletree (12), steering arm (14), tie rod (15), knuckle arm (16) and steering fork (17) all are provided with two, axletree (12) are arranged along left and right direction, tie rod (14) rotate the intermediate position of assembly at axletree (12), tie rod (15) are articulated with steering arm (15), tie rod (15) are articulated with knuckle arm (16), knuckle arm (16) and steering fork (17) fixed connection, be equipped with the vertical face of steering arm (20) towards axletree (12) on steering arm (14), its characterized in that, with the axis of perpendicular to axletree (12) and the plane that passes through the axis of rotation of steering arm (14) as the reference plane, the intermediate position of axletree (12) is equipped with the turn to the locating part, be equipped with the vertical left spacing face (21) and the vertical spacing face (22) of right spacing face (21) that are in the reference plane both sides on turning to the locating part, vertical spacing face (20) is used for when steering arm (14) and the cooperation of steering arm (20) and the right spacing face of turning to the vertical spacing face of steering arm (20), be used for setting for the right spacing arm (20) and steering arm (20) rotation angle cooperation of turning to the right side.
2. The steering mechanism according to claim 1, wherein the left vertical limiting surface (21) and the right vertical limiting surface (22) are vertical straight surfaces.
3. The steering mechanism according to claim 2, wherein the steering stop is a steering stop plate (19).
4. The steering mechanism according to claim 3, wherein the left vertical limiting surface (21) and the right vertical limiting surface (22) are connected in a smooth transition manner through a vertical arc surface (23).
5. The steering mechanism as claimed in any one of claims 1 to 4, wherein the first set angle is equal to the second set angle.
6. The steering mechanism according to any one of claims 1 to 4, wherein the axle (12) is a front axle, and the steering stopper is provided on a front side of the axle (12).
7. Steering mechanism according to any one of claims 1 to 4, characterized in that the two steering rods (15) are articulated to the steering arm (14) by means of a common articulation shaft (25).
8. The steering mechanism according to claim 1 or 2, wherein the steering limiting member is two steering limiting blocks arranged at an interval in the left-right direction, and the left vertical limiting surface (21) and the right vertical limiting surface (22) are respectively provided on the two steering limiting blocks.
9. Unpowered transport vehicle comprising a frame (11) and a steering mechanism arranged on the frame (11), characterized in that the steering mechanism is a steering mechanism according to any one of claims 1 to 8.
10. The unpowered transport vehicle according to claim 9, characterized in that the frame (11) is provided with an avoidance opening (28) for avoiding a wheel (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221683021.4U CN218021815U (en) | 2022-06-30 | 2022-06-30 | Steering mechanism and unpowered transfer trolley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221683021.4U CN218021815U (en) | 2022-06-30 | 2022-06-30 | Steering mechanism and unpowered transfer trolley |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218021815U true CN218021815U (en) | 2022-12-13 |
Family
ID=84380045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221683021.4U Active CN218021815U (en) | 2022-06-30 | 2022-06-30 | Steering mechanism and unpowered transfer trolley |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218021815U (en) |
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2022
- 2022-06-30 CN CN202221683021.4U patent/CN218021815U/en active Active
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