Steering structure and charging vehicle

Abstract

The utility model provides a steering structure and a charging vehicle. The steering structure is installed on an engineering vehicle. The steering structure comprises a vehicle frame connecting frame fixedly installed at the bottom of a vehicle frame of the engineering vehicle; the driving wheel connecting frame is rotatably mounted at the bottom of the frame connecting frame; the adapter bearing is mounted between the frame connecting frame and the driving wheel connecting frame; an inner ring of the adapter bearing is fixedly connected with the frame connecting frame, and an outer ring of the adapter bearing is connected with the top of the driving wheel connecting frame; the outer edge face of the outer ring of the adapter bearing is provided with a gear tooth groove. A spur rack is further installed in the frame connecting frame, teeth of the spur rack are matched with and meshed with tooth grooves of the gear, and the spur rack can move front and back in the tangential direction of the outer ring so that the outer ring can rotate around the inner ring. A driving assembly used for driving the spur rack to move is further installed in the frame connecting frame.

Description

Technical Field

[0001] This application relates to the field of steering structure technology for engineering vehicles, and in particular to a steering structure and a material loading vehicle. Background Technology

[0002] The material handling truck is designed with a large hopper almost as long as the vehicle body. When the hopper is full, the increased weight inevitably shifts the vehicle's center of gravity forward. To address this shift, engineers had to sacrifice some space at the front of the vehicle, repositioning the hydraulic cylinders connecting the body and the hopper rearward to balance the vehicle's center of gravity. However, this adjustment introduced a new challenge: the rearward movement of the hydraulic cylinders encroached on the space originally occupied by the front wheels. To solve this problem, a compact steering assembly was needed to ensure that the vehicle could still be nimbly steered while maintaining balance. Utility Model Content

[0003] The purpose of this invention is to solve the above-mentioned problems by providing a steering structure and a feeding vehicle.

[0004] The technical solution of this application is implemented as follows:

[0005] In a first aspect, this application provides a steering structure, which is installed on an engineering vehicle;

[0006] The steering structure includes:

[0007] A frame connecting frame is fixedly installed at the bottom of the frame of the engineering vehicle;

[0008] A drive wheel connecting bracket is rotatably mounted on the bottom of the frame connecting bracket;

[0009] A transition bearing is installed between the frame connecting frame and the drive wheel connecting frame;

[0010] The inner ring of the adapter bearing is fixedly connected to the frame connecting bracket, and the outer ring of the adapter bearing is connected to the top of the drive wheel connecting bracket.

[0011] The outer ring of the transition bearing has gear tooth grooves on its outer edge surface;

[0012] The frame connecting bracket is also equipped with a rack, the teeth of which are adapted to and mesh with the gear teeth. The rack can move back and forth along the tangential direction of the outer ring so that the outer ring can rotate around the inner ring.

[0013] The frame connecting bracket also houses a drive assembly for moving the rack.

[0014] The advantages or beneficial consequences of the above technical solutions at least include:

[0015] In a second aspect, the application further provides a charging trolley, which is provided with the turning structure according to any one of the above technical solutions, and the frame connecting frame of the turning structure is installed at the tail of the charging trolley.

[0016] The advantages or beneficial consequences of the above technical solutions at least include:

[0017] The smooth rotation between the driving wheel connecting frame and the frame connecting frame is realized by the rotatable adapter bearing installed in the internal structure of the frame connecting frame. In addition, by moving the oil cylinder connecting the charging trolley and the hopper backward, the center of gravity of the whole vehicle can be adjusted to a more balanced middle position. This design not only helps to avoid the disadvantageous situation of the front inclination of the whole vehicle during operation, but also further ensures that the wheels can be directly driven by the engine by installing the engine of the charging trolley in the driving wheel connecting frame, thereby improving the operation efficiency and stability of the whole system BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application.

[0019] Figure 1 A structural schematic view of the turning structure of the embodiment of the application is shown.

[0020] Figure 2 An installation schematic view of the turning structure of the embodiment of the application is shown.

[0021] Figure 3 An installation schematic view of the adapter bearing of the embodiment of the application is shown.

[0022] Figure 4 A position schematic view of the straight rack of the embodiment of the application is shown.

[0023] Figure 5 A first schematic view of the turning structure of the embodiment of the application before and after rotation is shown.

[0024] Figure 6 A second schematic view of the turning structure of the embodiment of the application before and after rotation is shown, in which the frame connecting frame is hidden.

[0025] Figure 7 A cooperation schematic view of the straight rack and the screw rod of the embodiment of the application is shown.

[0026] Figure 8The meshing schematic view of the screw rod and the gear tooth slot of the utility model embodiment is shown.

[0027] Figure 9 The position schematic view of the steering structure installed on the charging trolley of the utility model embodiment is shown.

[0028] The figure mark: 10, steering structure, 11, trolley connecting frame, 111, straight rack, 1111, tooth, 1112, guide rail, 112, screw rod, 113, servo motor, 114, guide groove, 12, driving wheel connecting frame, 13, adapter bearing, 131, outer ring, 1311, gear tooth slot, 132, inner ring, 20, charging trolley, DETAILED DESCRIPTION

[0029] Embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While certain embodiments of the present application are shown in the drawings, it is understood that the present application can be implemented in various forms and should not be interpreted as being limited to the embodiments set forth herein, but rather these embodiments are provided for more thorough and complete understanding of the present application. It should be understood that the drawings and embodiments of the present application are only for illustrative purposes and are not intended to limit the scope of protection of the present application.

[0030] It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0031] It should be understood that the term "comprising" and its variants used herein are open and inclusive, i.e., "including but not limited to". The term "based on" is "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Related definitions of other terms will be given in the following description. It should be noted that the "first", "second", etc. concepts mentioned in the present application are only used to distinguish different devices, modules or units, and are not used to limit the functions performed by these devices, modules or units or their mutual dependence.

[0032] It should be noted that the modification of "one" or "multiple" mentioned in the present application is illustrative and not restrictive, and those skilled in the art should understand that unless otherwise explicitly indicated in the context, it should be understood as "one or more".

[0033] The names of the messages or information exchanged between the multiple devices in the embodiments of the present application are only for illustrative purposes, and are not used to limit the scope of these messages or information.

[0034] A steering structure 10, wherein the steering structure 10 is mounted on an engineering vehicle, and further, the steering structure 10 includes:

[0035] The frame connecting bracket 11 is fixedly installed on the bottom of the engineering vehicle frame by the first bolt assembly, such as... Figure 2 As shown;

[0036] The drive wheel connecting bracket 12 is rotatably mounted on the bottom of the frame connecting bracket 11;

[0037] The adapter bearing 13 is installed between the frame connecting frame 11 and the drive wheel connecting frame 12. The drive wheel connecting frame 12 is rotatably installed at the bottom of the frame connecting frame 11 via the adapter bearing 13.

[0038] The inner ring 132 of the adapter bearing 13 is also fixedly connected to the frame connecting bracket 11 via the first bolt assembly, specifically, as follows: Figure 2 As shown, both the inner ring 132 and the frame connecting frame 11 have corresponding and through bolt holes. During installation, the first bolt assembly passes through the engineering vehicle and then through the bolt holes to pass through the frame connecting frame 11 and the inner ring 132, so that the inner ring 132, the frame connecting frame 11 and the engineering vehicle are fixed together.

[0039] Furthermore, the outer ring 131 of the transition bearing 13 is connected to the top of the drive wheel connecting bracket 12 via a second bolt assembly, and similarly, as... Figure 3 As shown, the second bolt assembly passes through the drive wheel connecting frame 12 from below and then through the outer ring 131, thereby fixing the outer ring 131 to the drive wheel connecting frame 12.

[0040] Furthermore, the outer ring 131 of the transition bearing 13 has gear tooth grooves 1311 on its outer edge surface, such as... Figure 2 As shown in the right magnified portion; and a rack 111 is also horizontally installed inside the frame connecting frame 11. The teeth 1111 of the rack 111 are adapted to and mesh with the gear tooth groove 1311. The rack 111 can move back and forth along the tangent direction of the outer ring 131 so that the outer ring 131 rotates around the inner ring 132, thereby realizing the rotation of the drive wheel connecting frame 12 and the frame connecting frame 11;

[0041] The frame connecting bracket 11 also houses a drive assembly for moving the rack 111. This application provides two embodiments for the specific structure of the drive assembly:

[0042] In the first embodiment: the driving component includes:

[0043] The screw rod 112 is rotatably installed in the frame connecting frame 11, the axial direction of the screw rod 112 is consistent with the tangent direction of the outer ring 131, and the straight rack 111 is provided with a threaded groove, the screw rod 112 is threadedly connected with the straight rack 111 through the threaded groove, so that the straight rack 111 is driven to move forward and backward along the tangent direction of the outer ring 131 through the rotation of the screw rod 112, as shown in the figure. Figure 6

[0044] The servo motor 113 is installed outside the frame connecting frame 11, the driving end is inserted into the frame connecting frame 11, and the servo motor 113 is fixed with the screw rod 112, and the servo motor 113 is used for rotating the screw rod 112.

[0045] It should be noted that: the lead angle of the screw rod 112 is less than the friction angle, and the lead angle of the screw rod 112 is less than or equal to 20°, so that the self-locking of the screw rod 112 and the straight rack 111 can be realized, that is, the forward and backward movement of the straight rack 111 is limited by the screw rod 112 and cannot move forward and backward, so as to avoid that the self-rotation of the wheel drives the rack to move together, resulting in that the wheel cannot realize self-locking.

[0046] Based on the further improvement of the above structure, the inner wall of the frame connecting frame 11 is also provided with a guide groove 114, and the outer side of the straight rack 111 is also provided with a guide rail 1112, the guide rail 1112 is slidably embedded in the guide groove 114, so as to guide the smooth forward and backward movement of the straight rack 111, as shown in the figure. Figure 7

[0047] In the second embodiment:

[0048] The driving assembly comprises a servo electric push rod, the housing of the servo electric push rod is installed outside the frame connecting frame 11, the telescopic end is inserted into the frame connecting frame 11, and the servo electric push rod is fixedly connected with the straight rack 111, the telescopic direction of the telescopic end of the servo electric push rod is consistent with the moving direction of the straight rack 111, the straight rack 111 can be moved forward and backward, so as to realize the rotation of the outer ring 131, that is, the rotation of the driving wheel connecting frame 12 and the frame connecting frame 11 can be completed.

[0049] The embodiment of the utility model also provides a charging trolley, the charging trolley 20 is installed with the above-mentioned steering structure 10, the frame connecting frame 11 of the steering structure 10 is installed at the tail of the charging trolley 20, so as to realize the steering of the charging trolley 20, in addition, the engine of the charging trolley 20 is installed in the driving wheel connecting frame 12, and the engine is used for driving the wheel to rotate, so as to realize the movement of the charging trolley 20, as shown in the figure. Figure 9 ​​As shown, the wheels in front of the charging trolley 20 can be driven wheels, and the wheels of the steering structure 10 in the rear can be driving wheels, integrating the steering and driving in one structure, facilitating equipment maintenance, and also providing more space for other positions of the vehicle body, for example, the oil cylinder connecting the charging trolley 20 and the hopper can be moved backward to balance the center of gravity of the whole vehicle to the middle, effectively avoiding the front tilting of the whole vehicle.

[0050] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0051] Those skilled in the art should understand that the above embodiments are only for clearly illustrating the present application, and do not limit the scope of the present application. Based on the above disclosure, other changes or modifications can also be made by those skilled in the art, and these changes or modifications are still within the scope of the present application.

Claims

1. A turning structure characterized by: The turning structure (10) is installed on an engineering vehicle; The turning structure (10) comprises: A frame connecting frame (11) fixedly installed at the bottom of the frame of the engineering vehicle; A driving wheel connecting frame (12) rotatably installed at the bottom of the frame connecting frame (11); A turning bearing (13) installed between the frame connecting frame (11) and the driving wheel connecting frame (12); The inner ring (132) of the turning bearing (13) is fixedly connected with the frame connecting frame (11), and the outer ring (131) of the turning bearing (13) is connected with the top of the driving wheel connecting frame (12); The outer ring (131) of the turning bearing (13) has gear teeth grooves (1311) on the outer edge surface thereof; A straight rack (111) is further installed in the frame connecting frame (11), the gear teeth (1111) of the straight rack (111) are adapted to and meshed with the gear teeth grooves (1311), and the straight rack (111) is movable forward and backward along the tangent direction of the outer ring (131) to rotate the outer ring (131) around the inner ring (132); A driving assembly for driving the straight rack (111) to move is further installed in the frame connecting frame (11).

2. The turning structure of claim 1, wherein: The driving assembly comprises: A screw rod (112) rotatably installed in the frame connecting frame (11), the axial direction of the screw rod (112) being consistent with the tangent direction of the outer ring (131); A servo motor (113), the housing of the servo motor (113) being installed outside the frame connecting frame (11), the driving end of the servo motor (113) extending into the frame connecting frame (11) and being fixed with the screw rod (112), the servo motor (113) being used for rotating the screw rod (112); The straight rack (111) is provided with a threaded groove, and the screw rod (112) is threadedly matched with the straight rack (111) through the threaded groove; so that the straight rack (111) is driven to move forward and backward along the tangent direction of the outer ring (131) through the rotation of the screw rod (112).

3. The steering structure of claim 2, wherein: The lead angle of the screw rod (112) is less than the friction angle, and the lead angle of the screw rod (112) is ≤20°.

4. A turning structure according to claim 2 or 3, characterised in that: An inner wall of the frame connecting frame (11) is further provided with a guide groove (114), and an outer side of the straight rack (111) is further provided with a guide rail (1112) slidably embedded in the guide groove (114).

5. The turning structure of claim 1, wherein: The driving assembly comprises a servo motor push rod, the housing of the servo motor push rod being installed outside the frame connecting frame (11), the telescopic end of the servo motor push rod extending into the frame connecting frame (11) and being fixedly connected with the straight rack (111).

6. A charging car characterized by: The charging vehicle (20) is provided with the turning structure according to any one of claims 1-5, and the frame connecting frame (11) of the turning structure (10) is installed at the tail of the charging vehicle (20).

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