Winding type platform lifting arm mechanism

Abstract

The utility model provides a winching type platform lifting arm mechanism which comprises lifting arms, the two ends of each lifting arm are hinged to a chassis and a lifting platform through lifting fulcrums respectively, an infrared probe is installed on the left side of the lifting platform, a hinge point in the center of the lifting platform is connected with the two ends of a pulley shaft, and a pair of lifting arms is arranged on the left side and the right side respectively. Grouping pulley blocks are arranged at the two ends of the pulley shafts, steel wire ropes are wound around the grouping pulley blocks, and one ends of the steel wire ropes are connected with the traction main frame through steel wire rope adjusting buckles. According to the winching type platform lifting arm mechanism, the wheel base of the pulley shaft is changed from L to L'due to tightening and loosening of the steel wire rope, and the height of the lifting platform is also changed from H to H '. The lifting arms and the like are components, multiple groups of components are linked to lift the whole platform, and the infrared probe tracks and detects the position of goods and transmits a signal to an electric control system so as to ensure the accurate height of the lifting platform.

Description

Technical Field

[0001] The utility model relates to the technical field of platform lifting arm mechanisms, in particular to a twisting type platform lifting arm mechanism. Background Art

[0002] Aerial work platforms can be divided into straight arm type and articulated arm type according to the arm span. The articulated arm aerial work platform adopts a multi-stage folding arm combination design, which is flexible and convenient. It can cross certain obstacles and perform multi-point operations in one place. It has good safety and convenient movement, but the cost is high. Articulated arm aerial work platform vehicles are widely used in urban management, electricity, street lights, advertising, communications, filming, gardening, transportation, docks, airports, ports, large industrial and mining companies and other industries for installation, maintenance and climbing operations.

[0003] However, in the prior art, most of the straight arm and curved arm types are used, and the articulated platform lifting arm mechanism is rarely used. The traditional straight arm and curved arm types cannot be forced to move forward by external force, and cannot be pulled backward by the reverse traction of the grouped wire ropes, which is inconvenient to operate. In order to solve this technical problem, a articulated platform lifting arm mechanism is proposed. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies in the prior art, the present application aims to provide a hinged platform lifting arm mechanism, including a lifting arm, wherein the two ends of the lifting arm are hinged to the chassis and the lifting platform through lifting fulcrums, an infrared probe is installed on the left side of the lifting platform, and the central hinge point is connected to the two ends of the pulley shaft, and the lifting arms are provided with a pair on each side, which are cross-placed and connected in series by two pulley shafts in the center, and grouped pulley groups are provided at both ends of the pulley shaft, and the grouped pulley groups are wound with steel wire ropes, and one end of the steel wire rope is connected to the traction frame through a steel wire rope adjustment buckle.

[0005] Preferably, the lifting arm is hinged.

[0006] Preferably, the traction frame is a linkage mechanism, which is forced to move forward by external force and is reversely pulled by a steel wire rope when moving backward.

[0007] Preferably, the traction frame is pulled forward by external force, driving the wire rope, and the wire rope forces the two pulley shafts to approach each other through the grouped pulley block.

[0008] Preferably, tightening and loosening of the wire rope causes the wheelbase of the pulley shaft to change from L to L', and the height of the lifting platform also changes from H to H'.

[0009] Beneficial effect: The twisted platform lifting arm mechanism changes the wheelbase of the pulley shaft from L to L' and the height of the lifting platform from H to H' due to the tightening and loosening of the wire rope. The lifting arms and other components are all components, and multiple groups are linked to make the entire platform rise and fall. The infrared probe tracks and detects the position of the goods, and transmits the signal to the electric control system to ensure the accurate height of the lifting platform. At the same time, it is flexible and convenient, can cross certain obstacles, and perform multi-point operations in one place. It has good safety, convenient movement, and is practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0011] Figure 1 This is a front view of the twisting platform lifting arm mechanism of the utility model;

[0012] Figure 2 It is a top view of the twisting platform lifting arm mechanism of the utility model;

[0013] Figure 3 It is a partial structural schematic diagram of the twisting platform lifting arm mechanism of the utility model;

[0014] In the figure: 1. chassis; 2. infrared probe; 3. lifting platform; 4. lifting arm; 5. grouped pulley block; 6. lifting arm fulcrum; 7. wire rope; 8. wire rope adjustment buckle; 9. pulley shaft; 10. traction frame. DETAILED DESCRIPTION

[0015] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It is also necessary to explain that, for ease of description, only the parts related to the utility model are shown in the accompanying drawings.

[0016] The accompanying drawings in the embodiments of the present invention: different types of section lines in the drawings are not marked according to national standards, nor do they impose any requirements on the materials of the components. Instead, they are used to distinguish the cross-sectional views of the components in the drawings.

[0017] See also Figure 1-3 A hinged platform lifting arm mechanism includes a lifting arm 4, the two ends of which are hinged to a chassis 1 and a lifting platform 3 through a lifting fulcrum 6, an infrared probe 2 is installed on the left side of the lifting platform 3, and the central hinge point is connected to the two ends of a pulley shaft 9, and the lifting arm 4 has a pair on each side, which are cross-placed and connected in series by two pulley shafts 9 in the center, and grouped pulley blocks 5 are provided at both ends of the pulley shaft 9, and a steel wire rope 7 is wound around the grouped pulley block 5, and one end of the steel wire rope 7 is connected to a traction frame 10 through a steel wire rope adjustment buckle 8.

[0018] Among them, the lifting arm 4 is of hinged type.

[0019] The traction frame 10 is a linkage mechanism, which is forced to move forward by external force and is pulled backward by the wire rope 7 in the opposite direction.

[0020] The traction frame 10 is pulled forward by external force, driving the steel wire rope 7, and the steel wire rope 7 forces the two pulley shafts 9 to approach each other through the grouped pulley block 5.

[0021] The tightening and loosening of the steel wire rope 7 changes the wheelbase of the pulley shaft 9 from L to L', and the height of the lifting platform 3 also changes from H to H'.

[0022] It should be noted that the platform rises: the traction frame 10 is pulled forward by external force, driving the grouped steel wire ropes 7, and the grouped steel wire ropes 7 force the two pulley shafts 9 to be close through the grouped pulley group 5, and the two ends of the pulley shaft 9 force the central point of the lifting arm 4 to be close. Since the lifting arm 4 is placed crosswise, the front and rear distance of the fulcrum 6 of the lifting arm 4 remains unchanged, and it can only force the up and down distance to change, thereby raising the platform.

[0023] Platform descent: Due to the gravity of the platform and related accessories, the platform always has a downward force. When the grouped wire rope 7 loses traction, it will relax. Under the action of gravity, the grouped pulley shaft 9 will separate and the lifting platform 3 will descend.

[0024] As the steel wire rope 7 is tightened and loosened, the wheelbase of the pulley shaft 9 changes from L to L', and the height of the lifting platform 3 also changes from H to H'. The lifting arm and other components are all components, and multiple groups are linked to make the entire platform rise and fall. The infrared probe 2 tracks and detects the position of the cargo and transmits the signal to the electronic control system to ensure the accurate height of the lifting platform 2.

[0025] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the utility model involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the concept of the utility model. For example, the above features are replaced with the technical features with similar functions disclosed in the present application (but not limited to) by each other to form a technical solution.

Claims

1. A hinged platform lifting arm mechanism, comprising a lifting arm (4), characterized in that: The two ends of the lifting arm (4) are respectively hinged to the chassis (1) and the lifting platform (3) through lifting fulcrums (6); an infrared probe (2) is installed at the left side of the lifting platform (3); and the central hinge point is connected to the two ends of the pulley shaft (9); the lifting arm (4) has a pair of lifting arms on the left and right, which are arranged crosswise and are connected in series by two pulley shafts (9) in the center; the two ends of the pulley shaft (9) are provided with group pulley blocks (5), and the group pulley blocks (5) are wound with steel wire ropes (7); one end of the steel wire rope (7) is connected to the traction frame (10) through a steel wire rope adjustment buckle (8).

2. The articulated platform lifting arm mechanism according to claim 1, characterized in that: The lifting arm (4) is of hinged type.

3. The articulated platform lifting arm mechanism according to claim 1, characterized in that: The traction frame (10) is a linkage mechanism, which is forced to move forward by an external force and is reversely pulled by a steel wire rope (7) when moving backward.

4. The articulated platform lifting arm mechanism according to claim 1, characterized in that: The traction frame (10) is pulled forward by an external force, driving the steel wire rope (7), and the steel wire rope (7) forces the two pulley shafts (9) to approach each other through the group pulley block (5).

5. The articulated platform lifting arm mechanism according to claim 1, characterized in that: The tightening and loosening of the steel wire rope (7) causes the wheelbase of the pulley shaft (9) to change from L to L', and the height of the lifting platform (3) also changes from H to H'.

Images