Active floating structure of chassis of aerial work platform and aerial work platform

Abstract

The present invention discloses an active floating structure for the chassis of an aerial work platform and an aerial work platform. The active floating structure for the chassis includes: a chassis body, front outriggers, rear outriggers, a front wheel mechanism, a rear wheel mechanism, and a steering mechanism. The chassis body is provided with a floating multi-way valve. The front outriggers are rotationally connected to the chassis body through a first connecting shaft, and the front outriggers are connected to the chassis body through floating cylinders. The rear outriggers are rotationally connected to the chassis body through a second connecting shaft, and the rear outriggers are provided with valve rods that cooperate with the floating multi-way valve. The floating multi-way valve controls the floating cylinders to perform corresponding actions according to the telescopic changes of the valve rods. The front wheel mechanism includes a left front wheel and a right front wheel, and the rear wheel mechanism includes a left rear wheel and a right rear wheel. The steering mechanism is arranged between the left front wheel and the right front wheel. In the present invention, the chassis body is rotationally connected to the front and rear outriggers, enabling the front and rear outriggers to be leveled; by providing a cooperating floating multi-way valve, valve rods, and floating cylinders, the leveling function of the chassis body is achieved.

Description

Technical Field

[0001] The present invention relates to the field of aerial work equipment, and particularly to an active floating structure for the chassis of an aerial work vehicle and an aerial work vehicle. Background Art

[0002] Aerial work vehicles are widely used in ship repair and construction, municipal engineering, electricity, communication, gardening, advertising, stadiums, airports, ports, and various large industrial and mining enterprises, etc., and are capable of performing aerial work, equipment installation, maintenance, etc. When a traditional aerial work vehicle works on a road surface with poor road conditions, such as a pitted ground, since the outriggers and the chassis are fixed and cannot float, the vehicle body will tilt together with the chassis, resulting in a relatively large shaking of the vehicle body, a very poor operation experience, and even a risk of rollover. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. For this purpose, the present invention provides an active floating structure for the chassis of an aerial work vehicle and an aerial work vehicle, which can ensure the safety of the aerial work vehicle during operation.

[0004] An active floating structure for the chassis of an aerial work vehicle according to an embodiment of the present invention includes: a chassis body, front outriggers, rear outriggers, a front wheel mechanism, a rear wheel mechanism, and a steering mechanism. A floating multi-way valve is provided on the chassis body. The middle part of the front outrigger is rotatably connected to the chassis body through a first connecting shaft, and both ends of the front outrigger are fixedly connected to the chassis body through floating cylinders. The middle part of the rear outrigger is rotatably connected to the chassis body through a second connecting shaft. A valve rod cooperating with the floating multi-way valve is provided on the rear outrigger. The floating multi-way valve controls the floating cylinders to perform corresponding actions according to the telescopic change of the valve rod. The front wheel mechanism includes a left front wheel and a right front wheel respectively connected to both ends of the front outrigger. The rear wheel mechanism includes a left rear wheel and a right rear wheel respectively connected to both ends of the rear outrigger. The steering mechanism is arranged between the left front wheel and the right front wheel.

[0005] The active floating structure for the chassis of an aerial work vehicle according to the above embodiment of the present invention has at least the following beneficial effects: The chassis body is not completely connected to the front outriggers and the rear outriggers. The front outriggers and the rear outriggers can rotate around the chassis body, so that the front and rear outriggers have a certain leveling ability, avoiding the instability of the vehicle body caused by the rotation of the chassis body; By providing a floating multi-way valve, a valve rod, and floating cylinders that cooperate with each other, the swing of the front outrigger is adjusted in real time according to the change of the road conditions, so as to level the chassis body of the aerial work vehicle.

[0006] According to some embodiments of the present invention, the axes of the first connecting shaft and the second connecting shaft are parallel to the midline in the length direction of the chassis body.

[0007] According to some embodiments of the present invention, the steering mechanism is a first steering oil cylinder with two ends respectively connected to the first connecting shaft and the left front wheel, and a second steering oil cylinder with two ends respectively connected to the first connecting shaft and the right front wheel.

[0008] According to some embodiments of the present invention, a steering link is provided between the left front wheel and the right front wheel.

[0009] According to some embodiments of the present invention, the floating multi-way valve is fixed on the underframe body through a first cushion block. The first cushion block is welded to one end of the underframe body close to the rear leg. The lower end of the first cushion block is detachably connected with a second cushion block, and an adjusting pad for adjusting the gap between the second cushion block and the rear leg is further provided between the first cushion block and the second cushion block.

[0010] According to some embodiments of the present invention, the second cushion block is connected to the first cushion block by bolts.

[0011] According to some embodiments of the present invention, a reinforcing plate is further provided between the upper end of the first cushion block and the underframe body.

[0012] Based on the same inventive concept, the present invention also provides an aerial work platform, which is provided with the underframe active floating structure in the above embodiments.

[0013] The additional aspects and advantages of the present invention will be partly given in the following description, partly will become obvious from the following description, or be understood through the practice of the present invention. Description of the Drawings

[0014] The above and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0015] Figure 1 is a top view of an embodiment of the present invention;

[0016] Figure 2 is a front view of an embodiment of the present invention;

[0017] Figure 3 is a partial structural cross-sectional view of the installation position of the floating multi-way valve;

[0018] Figure 4 is a rear view of an embodiment of the present invention.

[0019] Reference Signs:

[0020] Underframe body 100, floating multi-way valve 101;

[0021] Front leg 200, first connecting shaft 201, floating oil cylinder 202;

[0022] Rear outrigger 300, second connecting shaft 301, valve rod 302;

[0023] Front wheel mechanism 400, left front wheel 401, right front wheel 402;

[0024] Rear wheel mechanism 500, left rear wheel 501, right rear wheel 502;

[0025] Steering mechanism 600, first steering cylinder 601, second steering cylinder 602;

[0026] Steering link 700, first cushion block 800, reinforcement plate 801, second cushion block 900, adjusting pad 1000. Detailed implementation mode

[0027] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.

[0028] In the description of the present invention, it should be understood that the orientation descriptions such as up, down, front, back, left, right, etc. 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 invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0029] In the description of the present invention, unless otherwise clearly defined, words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0030] Refer to Figures 1 to 4 , a chassis active floating structure of an aerial work vehicle according to an embodiment of the present invention, includes: a chassis body 100, a front outrigger 200, a rear outrigger 300, a front wheel mechanism 400, a rear wheel mechanism 500, and a steering mechanism 600.

[0031] As Figure 3 and Figure 4 shown, a floating multi-way valve 101 is provided at one end of the chassis body 100 close to the rear outrigger 300.

[0032] The middle part of the front outrigger 200 is rotatably connected to the middle part of the front end of the chassis body 100 through a first connecting shaft 201, and both ends of the front outrigger 200 are fixedly connected to the top of the chassis body 100 through floating cylinders 202.

[0033] The front wheel mechanism 400 includes a left front wheel 401 and a right front wheel 402 respectively connected to both ends of the front support leg 200, and the rear wheel mechanism 500 includes a left rear wheel 501 and a right rear wheel 502 respectively connected to both ends of the rear support leg 300.

[0034] The middle part of the rear support leg 300 is rotatably connected to the middle part of the rear end of the chassis body 100 through a second connecting shaft 301. A valve rod 302 cooperating with the floating multi-way valve 101 is installed on the rear support leg 300. The valve rod 302 is axially stretched and compressed due to the swing of the rear support leg 300. The floating multi-way valve 101 will control the flow rate of the corresponding floating oil cylinder 202 according to the telescopic change of the valve rod 302 to level the chassis body 100 of the aerial work platform. For example, during the forward movement of the aerial work platform, when the left rear wheel 501 falls into a pit, the valve rod 302 will be pulled out, and the left front floating oil cylinder 202 will be filled with oil; when the left rear wheel 501 encounters a protrusion, the valve rod 302 will be compressed, and the right front floating oil cylinder 202 will be filled with oil.

[0035] The steering mechanism 600 is arranged between the left front wheel 401 and the right front wheel 402.

[0036] In some embodiments of the present invention, as Figure 1 shown, the axes of the first connecting shaft 201 and the second connecting shaft 301 are parallel to the midline in the length direction of the chassis body 100.

[0037] In some embodiments of the present invention, as Figure 1 shown, the steering mechanism 600 is a first steering oil cylinder 601 with both ends respectively connected to the first connecting shaft 201 and the left front wheel 401, and a second steering oil cylinder 602 with both ends respectively connected to the first connecting shaft 201 and the right front wheel 402. The traveling direction of the aerial work platform is controlled by the telescopic movement of the first steering oil cylinder 601 and the second steering oil cylinder 602.

[0038] In some embodiments of the present invention, as Figure 1 shown, in order to ensure the stability of the steering of the aerial work platform, a steering link 700 is provided between the left front wheel 401 and the right front wheel 402.

[0039] In some embodiments of the present invention, as Figure 3 shown, the floating multi-way valve 101 is fixed on the chassis body 100 through a first cushion block 800. The first cushion block 800 is welded to one end of the chassis body 100 close to the rear support leg 300. The lower end of the first cushion block 800 is detachably connected to a second cushion block 900. An adjusting pad 1000 for adjusting the gap between the second cushion block 900 and the rear support leg 300 is further provided between the first cushion block 800 and the second cushion block 900. In this way, by adjusting the gap between the chassis body 100 and the rear support leg 300, the maximum rotation angle of the rear support leg 300 is changed.

[0040] In some embodiments of the present invention, further, the second cushion block 900 is connected to the first cushion block 800 by bolts to facilitate the installation of the adjusting pad 1000 and the adjustment of the clearance between the chassis body 100 and the rear support leg 300.

[0041] In some embodiments of the present invention, a reinforcing plate 801 is further provided between the upper end of the first cushion block 800 and the chassis body 100 to enhance the connection strength between the first cushion block 800 and the chassis body 100.

[0042] Based on the same inventive concept, the present invention also provides an aerial work platform, which is provided with the chassis active floating structure in the above embodiments.

[0043] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0044] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An active floating structure for the chassis of an aerial work platform, characterized in that, Comprising: A chassis body (100) provided with a floating multi-way valve (101) thereon; Front outriggers (200), the middle part of which is rotationally connected to the chassis body (100) through a first connecting shaft (201), and both ends of which are fixedly connected to the chassis body (100) through floating oil cylinders (202); Rear outriggers (300), the middle part of which is rotationally connected to the chassis body (100) through a second connecting shaft (301), and is provided with a valve rod (302) cooperating with the floating multi-way valve (101), and the floating multi-way valve (101) controls the floating oil cylinders (202) to perform corresponding actions according to the telescopic change of the valve rod (302); A front wheel mechanism (400) including a left front wheel (401) and a right front wheel (402) respectively connected to both ends of the front outriggers (200); A rear wheel mechanism (500) including a left rear wheel (501) and a right rear wheel (502) respectively connected to both ends of the rear outriggers (300); A steering mechanism (600) provided between the left front wheel (401) and the right front wheel (402); The floating multi-way valve (101) is fixed to the chassis body (100) through a first cushion block (800), the first cushion block (800) is welded to one end of the chassis body (100) close to the rear outriggers (300), the lower end of the first cushion block (800) is detachably connected with a second cushion block (900), and an adjusting pad (1000) for adjusting the gap between the second cushion block (900) and the rear outriggers (300) is further provided between the first cushion block (800) and the second cushion block (900); The axes of the first connecting shaft (201) and the second connecting shaft (301) are parallel to the midline in the length direction of the chassis body (100).

2. The underframe active floating structure of the aerial work platform according to claim 1, characterized in that The steering mechanism (600) is a first steering oil cylinder (601) with both ends respectively connected to the first connecting shaft (201) and the left front wheel (401), and a second steering oil cylinder (602) with both ends respectively connected to the first connecting shaft (201) and the right front wheel (402).

3. The underframe active floating structure of the aerial work platform according to claim 1, characterized in that A steering link (700) is provided between the left front wheel (401) and the right front wheel (402).

4. The underframe active floating structure of the aerial work vehicle according to claim 1, characterized in that, The second cushion block (900) is connected to the first cushion block (800) by bolts.

5. The underframe active floating structure of the aerial work platform according to claim 1, characterized in that, A reinforcing plate (801) is further provided between the upper end of the first cushion block (800) and the chassis body (100).

6. An aerial work platform, characterized in that, A chassis active floating structure of an aerial work vehicle as described in any one of claims 1 to 5 is provided.

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