Straddle carrier

Abstract

The straddle carrier comprises a frame, two groups of steering wheel assemblies and two groups of floating wheel assemblies, the two sets of steering wheel assemblies are located on the two sides of one end of the frame respectively, and wheels in the steering wheel assemblies can rotate along a vertical shaft to achieve steering. The two floating wheel assemblies are located on the two sides of the other end of the frame respectively and connected with the frame through the suspension oil cylinders, and the two floating wheel assemblies are connected through a pipeline, so that the two floating wheel assemblies achieve balanced stress of wheels on the two sides due to oil way conduction. According to the straddle carrier, the floating wheel assemblies are arranged on the two sides of one end of the frame correspondingly, the two floating wheel assemblies are connected through the pipeline, so that the two floating wheel assemblies achieve balanced stress of wheels on the two sides due to oil way conduction, and the two floating wheel assemblies can be regarded as a stress fulcrum which is combined with the two wheels at the other end; the straddle carrier is in a three-point supporting state and can stably run on a bumpy road surface, and the running stability is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hoisting equipment, in particular to a straddle carrier. BACKGROUND

[0002] The straddle carrier is a portal structure tire type self-walking hoisting equipment, which has a wide application scenario.

[0003] Generally, the straddle carrier has four groups of wheels, in order to reduce the cost, the wheel groups are directly rigidly connected with the straddle carrier under the condition of flat road surface. When driving on uneven road surface, the wheels can be separated from the ground, losing the traction and braking ability, reducing the stability of the whole vehicle. In view of this, the balance beam type whole axle can solve this problem, but due to the characteristics of the portal structure of the straddle carrier, it can only be arranged on the same side of the vehicle body, and due to the characteristics of high load and long wheelbase, the balance beam is usually large in structure, heavy in weight and high in cost. CONTENT OF THE UTILITY MODEL

[0004] In order to solve the above technical problems, the purpose of the present application is to provide a straddle carrier which is simple in structure and can improve the driving stability.

[0005] The technical scheme provided by the present application is as follows:

[0006] A straddle carrier, comprising a vehicle frame, two groups of steering wheel assemblies and two groups of floating wheel assemblies; the two groups of steering wheel assemblies are respectively located on both sides of one end of the vehicle frame, and the wheels in the steering wheel assemblies can rotate along the vertical shaft to realize steering; the two groups of floating wheel assemblies are respectively located on both sides of the other end of the vehicle frame, and are connected with the vehicle frame through suspension oil cylinders, and the two groups of floating wheel assemblies are connected through pipelines, so that the two groups of floating wheel assemblies are balanced in force transmission.

[0007] Preferably, the floating wheel assembly is connected with the vehicle frame through a sliding connection pair, so that the floating wheel assembly can slide up and down relative to the vehicle frame.

[0008] Preferably, the floating wheel assembly comprises a sliding column, the vehicle frame comprises a lower cross beam, the lower cross beam is provided with a mounting through hole, and the sliding column is arranged in the mounting through hole to form a sliding connection pair with the mounting through hole.

[0009] Preferably, a sliding sleeve is arranged in the mounting through hole, and the mounting through hole is matched with the sliding column through the sliding sleeve.

[0010] Preferably, the sliding column is connected with the piston rod of the suspension oil cylinder, the cylinder body of the suspension oil cylinder is connected with the vehicle frame, so that when the oil pressure in the pipeline pushes the piston rod, the piston rod extends and pushes the sliding column and the floating wheel assembly to move downward, and when the floating wheel assembly is forced to move upward, the piston rod can be retracted to squeeze the oil to the pipeline.

[0011] Preferably, the sliding column is hinged with the piston rod, and the cylinder body of the suspension oil cylinder is hinged with the vehicle frame.

[0012] Preferably, the upper end of the suspension oil cylinder is hinged with the vehicle frame, and the lower end is hinged with the floating wheel assembly, and the other hinged hole of the floating wheel assembly is hinged with the vehicle frame, so that the floating wheel assembly can swing relative to the vehicle frame.

[0013] Preferably, the cylinder body of the suspension oil cylinder is hinged with the vehicle frame, and the piston rod is hinged with the floating wheel assembly, so that when the oil in the pipeline presses the piston rod, the piston rod extends, and the floating wheel assembly swings inward and downward relative to the vehicle frame, and when the floating wheel assembly is subjected to an upward force, the piston rod is retracted to squeeze the oil to the pipeline.

[0014] Preferably, the vehicle frame comprises a lower cross beam, and the floating wheel assembly is hinged on the lower cross beam.

[0015] Preferably, the suspension oil cylinders on both sides are of the same specification.

[0016] Compared with the prior art, the cross conveyor of the utility model is provided with floating wheel assemblies on both sides of one end of the vehicle frame, and the two groups of floating wheel assemblies are connected through pipelines, so that the two groups of floating wheel assemblies are balanced in force through oil conduction, can be regarded as a force supporting point, and together with the two wheels at the other end, the cross conveyor is in a three-point supporting state, and can stably travel on a rugged road surface, and has high travel stability. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0018] Figure 1 It is a front view of the cross conveyor of the first embodiment of the utility model;

[0019] Figure 2 It is a front view of the cross conveyor of the first embodiment of the utility model; Figure 1 It is a side view of the cross conveyor shown in the figure;

[0020] Figure 3 It is a front view of the cross conveyor of the first embodiment of the utility model; Figure 1 It is an enlarged view of the floating wheel assembly;

[0021] Figure 4 It is an enlarged view of the floating wheel assembly; Figure 2 It is an enlarged view of the floating wheel assembly;

[0022] Figure 5 It is a front view of the cross conveyor of the second embodiment of the utility model;

[0023] Figure 6 For Figure 5 A side view of the straddle carrier is shown. DETAILED DESCRIPTION

[0024] In order for those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0025] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or indirectly on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0026] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship shown in the drawings 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 therefore cannot be understood as indicating or implying 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 limiting the present application.

[0027] In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" or "several" is two or more, unless otherwise explicitly and specifically limited.

[0028] It should be understood that the structures, proportions, sizes, etc. shown in the drawings of the present application are only used to cooperate with the content disclosed in the description, to enable those skilled in the art to understand and read, and are not used to limit the conditions that can be implemented by the present application, and therefore do not have technical significance. Any modification of structure, change of proportion relationship or adjustment of size, which does not affect the effects and purposes that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application.

[0029] As Figures 1 to 4 In the first embodiment, the straddle carrier includes a frame 1, two groups of steering wheel assemblies 2, and two groups of floating wheel assemblies 3.

[0030] The frame 1 comprises a plurality of vertical rods 11 and an upper cross beam 12 and a lower cross beam 13 fixedly connected with the vertical rods 11. The lifting system 4 is installed on the upper cross beam 12.

[0031] The two groups of steering wheel assemblies 2 are respectively arranged on both sides of one end of the frame 1 and are connected with the frame 1 through bearings, so that the wheels in the steering wheel assemblies 2 can rotate along the vertical axis to realize steering. The two groups of floating wheel assemblies 3 are respectively arranged on both sides of the other end of the frame 1 and are connected with the frame 1 through suspension oil cylinders 5, and the two groups of floating wheel assemblies 3 are connected through pipelines 6, so that the two groups of floating wheel assemblies 3 can be balanced in force transmission through the oil circuit. The specifications of the suspension oil cylinders 5 on both sides are the same.

[0032] Specifically, the floating wheel assembly 3 is connected with the frame 1 through a sliding connection pair, so that the floating wheel assembly 3 can slide up and down relative to the frame 1. In the embodiment, the floating wheel assembly 3 comprises a sliding column 31, the lower cross beam 13 of the frame 1 is provided with a mounting through hole 131, and the sliding column 31 is arranged in the mounting through hole 131 to form a sliding connection pair with the mounting through hole 131. A sliding sleeve 132 is arranged in the mounting through hole 131, and the mounting through hole 131 is matched with the sliding column 31 through the sliding sleeve 132, so as to improve the smoothness of the sliding between the sliding column 31 and the mounting through hole 131.

[0033] The sliding column 31 is connected with the piston rod 52 of the suspension oil cylinder 5, and the cylinder body 51 of the suspension oil cylinder 5 is connected with the frame 1, so that when the oil in the pipeline 6 presses the piston rod 52 (in the case that the floating wheel assembly 3 on the other side moves upward under force), the piston rod 52 extends and pushes the sliding column 31 and the floating wheel assembly 3 on the other side to move downward, and when the floating wheel assembly 3 moves upward under force, the piston rod 52 can be retracted to press the oil to the pipeline 6 (further press the piston rod 52 on the other side through the oil pressure in the pipeline 6 to make the piston rod 52 extend and push the sliding column 31 and the floating wheel assembly 3 on the other side to move downward).

[0034] In the embodiment, the sliding column 31 is hinged with the piston rod 52, and the cylinder body 51 of the suspension oil cylinder 5 is hinged with the frame 1, so that the movement between the cylinder body 51 and the piston rod 52 of the suspension oil cylinder 5 is more smooth.

[0035] As shown in FIGS. 1 and 2, the cross-truck comprises a frame 1, two groups of steering wheel assemblies 2, and two groups of floating wheel assemblies 3. The frame 1 comprises a plurality of vertical rods 11 and an upper cross beam 12 and a lower cross beam 13 fixedly connected with the vertical rods 11. The two groups of steering wheel assemblies 2 are respectively arranged on both sides of one end of the frame 1 and are connected with the frame 1 through bearings, so that the wheels in the steering wheel assemblies 2 can rotate along the vertical axis to realize steering. The two groups of floating wheel assemblies 3 are respectively arranged on both sides of the other end of the frame 1 and are connected with the frame 1 through suspension oil cylinders 5, and the two groups of floating wheel assemblies 3 are connected through pipelines 6, so that the two groups of floating wheel assemblies 3 can be balanced in force transmission through the oil circuit. Figure 5 , Figure 6 As shown in FIGS. 1 and 2, the cross-truck comprises a frame 1, two groups of steering wheel assemblies 2, and two groups of floating wheel assemblies 3. The frame 1 comprises a plurality of vertical rods 11 and an upper cross beam 12 and a lower cross beam 13 fixedly connected with the vertical rods 11. The two groups of steering wheel assemblies 2 are respectively arranged on both sides of one end of the frame 1 and are connected with the frame 1 through bearings, so that the wheels in the steering wheel assemblies 2 can rotate along the vertical axis to realize steering. The two groups of floating wheel assemblies 3 are respectively arranged on both sides of the other end of the frame 1 and are connected with the frame 1 through suspension oil cylinders 5, and the two groups of floating wheel assemblies 3 are connected through pipelines 6, so that the two groups of floating wheel assemblies 3 can be balanced in force transmission through the oil circuit.

[0036] In the embodiment, the upper end of the suspension oil cylinder 5' is hinged to the frame 1', and the lower end is hinged to the floating wheel assembly 3'. The floating wheel assembly 3' is further provided with another hinge hole for being hinged to the frame 1' (in the embodiment, the lower cross beam 13' of the frame 1').

[0037] In the embodiment, the cylinder body 51' of the suspension oil cylinder 5' is hinged to the frame 1', and the piston rod 52' is hinged to the floating wheel assembly 3', so that when the oil in the pipeline 6' pushes the piston rod 52' (in the case that the floating wheel assembly 3' on the other side swings upward under the upward force), the piston rod 52' extends, and the floating wheel assembly 3' swings inward and downward relative to the frame 1'. When the floating wheel assembly 3' is under the upward force, it swings and drives the piston rod 52' to retract, so as to squeeze the oil to the pipeline 6' (further push the piston rod 52' on the other side to extend through the oil pressure in the pipeline 6', so as to make the floating wheel assembly 3' on the other side swing inward and downward relative to the frame 1').

[0038] Compared with the prior art, the two embodiments of the cross conveyor are both provided with the floating wheel assemblies on both sides of one end of the frame, and the two groups of floating wheel assemblies are connected through the pipeline, so that the two groups of floating wheel assemblies are balanced by the oil circuit, and can be regarded as a force support point together with the two wheels on the other end, so as to make the cross conveyor in a three-point support state, and stably run on the rough road surface, and the running stability is high.

[0039] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A straddle carrier, characterized in that The vehicle frame, two sets of steering wheel assemblies and two sets of floating wheel assemblies; the two sets of steering wheel assemblies are respectively located at both sides of one end of the vehicle frame, and the wheels in the steering wheel assemblies can rotate along the vertical axis to realize steering; the two sets of floating wheel assemblies are respectively located at both sides of the other end of the vehicle frame, and are connected with the vehicle frame through suspension oil cylinders, and the two sets of floating wheel assemblies are connected through pipelines, so that the two sets of floating wheel assemblies are balanced in force due to oil conduction.

2. The shuttle as claimed in claim 1, wherein, The floating wheel assembly is connected with the vehicle frame through a sliding connection pair, so that the floating wheel assembly can slide up and down relative to the vehicle frame.

3. The shuttle as claimed in claim 2, wherein, The floating wheel assembly comprises a sliding column, the vehicle frame comprises a lower cross beam, the lower cross beam is provided with a mounting through hole, and the sliding column is arranged in the mounting through hole to form a sliding connection pair with the mounting through hole.

4. The shuttle as set forth in claim 3, wherein, A sliding sleeve is arranged in the mounting through hole, and the mounting through hole is matched with the sliding column through the sliding sleeve.

5. The shuttle as set forth in claim 3, wherein, The sliding column is connected with the piston rod of the suspension oil cylinder, the cylinder body of the suspension oil cylinder is connected with the vehicle frame, so that when the oil in the pipeline presses the piston rod, the piston rod extends and pushes the sliding column and the floating wheel assembly to move downward, and when the floating wheel assembly is forced to move upward, the piston rod can be retracted to squeeze the oil to the pipeline.

6. The shuttle as set forth in claim 3, wherein, The sliding column is hinged with the piston rod, and the cylinder body of the suspension oil cylinder is hinged with the vehicle frame.

7. The shuttle of claim 1 wherein, The upper end of the suspension oil cylinder is hinged with the vehicle frame, the lower end is hinged with the floating wheel assembly, and the other hinge hole of the floating wheel assembly is hinged with the vehicle frame, so that the floating wheel assembly can swing relative to the vehicle frame.

8. The shuttle according to claim 7, wherein, The cylinder body of the suspension oil cylinder is hinged with the vehicle frame, and the piston rod is hinged with the floating wheel assembly, so that when the oil in the pipeline presses the piston rod, the piston rod extends, and the floating wheel assembly swings inward and downward relative to the vehicle frame, and when the floating wheel assembly is subjected to an upward force, it swings and drives the piston rod to retract to squeeze the oil to the pipeline.

9. The shuttle as set forth in claim 7, wherein, The vehicle frame comprises a lower cross beam, and the floating wheel assembly is hinged on the lower cross beam.

10. A transporter as claimed in any one of claims 1 to 9, wherein, The specifications of the suspension oil cylinders on both sides are the same.

Images