CN201141780Y

CN201141780Y - Four-link lever weighing mechanism of platform for work high above ground

Info

Publication number: CN201141780Y
Application number: CNU2007200653408U
Authority: CN
Inventors: 祖骏
Original assignee: HUNAN RUNSHARE HEAVY INDUSTRY Co Ltd
Current assignee: Hunan Runshare Heavy Industry Co., Ltd.
Priority date: 2007-12-07
Filing date: 2007-12-07
Publication date: 2008-10-29
Anticipated expiration: 2017-12-07

Abstract

The utility model relates to a four-bar weighing mechanism on high altitude work platform, which comprises an operation fence, a support rack, a pin shaft, a weighing frame, a sensor and a bracket, wherein the operation fence and the support rack are fastened by mechanical method, the support rack is provided with a pin hole A and a pin hole C, the bracket is provided with a pin hole B and a pin hole D; the pin shaft A on one weighing frame are arranged in a pair of pin hole A on the support rack, the pin shaft B is arranged in a pair of pin hole B on the bracket; the pin shaft C on another weighing frame are arranged in a pair of pin hole C on the support rack, the pin shaft D is arranged in a pair of pin hole D on the bracket; the above two weighing frames and the four pin shafts are combined to be a four-bar mechanism; the sensor is clamped between the two weighing frames, one face of the sensor is connected with the weighing frame by mechanical method, the other face of the sensor is propped on the other weighing frame; the other end of the bracket is connected with the arm rack of high altitude work platform. The four-bar weighing mechanism adopts new four-bar arrangement method, thereby facilitating to improve test precision and stability.

Description

Four connecting rod Weighing mechanisms of aerial work platform

Technical field

The utility model relates to a kind of overload pick-up unit of aerial work platform, specifically is the Weighing mechanism of action bar on the aerial work platform.

Background technology

Aerial work platform is current widely used work high above the ground machinery, its security is people's attention extremely, wherein overload is the one of the main reasons that causes security incident, and how preventing overload and stopping dangerous play automatically is the prerequisite technology contents of aerial work platform.Accuracy and validity that overload detects are the necessary conditions of car load safety.The Weighing mechanism of existing aerial work platform, when action bar was subjected to load, the frame of weighing opened outwardly, and what sensor was subjected to is the pulling force effect.The shortcoming of this structure is: because the pulling force effect, the connection of sensor can become loosening easily and lose efficacy, thereby influences the reliability of complete machine.

The utility model content

The technical matters that the utility model need solve is: because be subjected to the pulling force effect deficiency loosening and that lost efficacy that becomes easily, and provide the weighing device of a kind of accuracy of detection height, stable performance at the sensor in the existing aerial work platform Weighing mechanism.

The technical scheme that the utility model adopted: this Weighing mechanism comprises action bar, bracing frame, bearing pin, the frame of weighing, sensor, support, action bar and bracing frame adopt mechanical system to fix, have two pairs of pin-and-holes on the bracing frame, be pin-and-hole A and pin-and-hole C, also have two pairs of pin-and-holes on the support, i.e. pin-and-hole B and pin-and-hole D; The frame of weighing is 2, and bearing pin is 4; Bearing pin A on one of them frame of weighing is installed in a pair of pin-and-hole A on the bracing frame, in the rack-mount a pair of pin-and-hole B of bearing pin B; Bearing pin C on another frame of weighing is installed in a pair of pin-and-hole C on the bracing frame, in the rack-mount a pair of pin-and-hole D of bearing pin D; Above-mentioned 2 weigh frame and 4 bearing pins composition four-bar mechanisms; Sensor clip is in the centre of two framves of weighing, and one side is connected with the frame of weighing by mechanical mode, and the another side roof pressure is on another weighs frame; The other end of support is connected with the jib of aerial work platform.

Weighing principle of the present utility model is: when the action bar bearing load, because the effect of gravity, action bar and bracing frame sink, and four connecting rods become parallelogram by rectangle, sensor is squeezed, and can detect the size of load in the action bar by the output signal of detecting sensor.Because the utility model has adopted four new linkage arrangement modes, make sensor become pressured state by original tension state, and the end frame of not weighing directly is rigidly connected, just slide on the surface, help detecting unidirectional pressurized situation, make the object of detection more direct and accurate, help improving accuracy of detection, and more reliable and more stable.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Embodiment

See also Fig. 1, the utility model mainly is made up of action bar 1, bracing frame 2, bearing pin 3, the frame 41 of weighing, the frame 42 of weighing, sensor 5, support 6, action bar 1 adopts mechanical system to fix with bracing frame 2, have two pairs of pin-and-holes on the bracing frame 2, be respectively pin-and-hole A and pin-and-hole C, also have two pairs of pin-and-holes on the support 6, be respectively pin-and-hole B and pin-and-hole D.4 bearing pins are contained in respectively on 2 framves of weighing, and the bearing pin A on the frame 41 of weighing is installed in a pair of pin-and-hole A on the bracing frame 2, and bearing pin B is installed in a pair of pin-and-hole B on the support 6; The bearing pin C on the frame 42 of weighing is installed in a pair of pin-and-hole C on the bracing frame 2, and bearing pin D is installed in a pair of pin-and-hole D on the support 2.Above-mentioned 2 weigh frame and 4 bearing pins composition four-bar mechanisms.Sensor 5 is clipped in the centre of two framves of weighing, and one side is connected with the frame of weighing by mechanical mode, and the another side roof pressure is on another weighs frame.The other end of support 6 is connected with the jib of altitude effect platform.

Claims

1, four connecting rod Weighing mechanisms of aerial work platform, comprise action bar, bracing frame, bearing pin, the frame of weighing, sensor, support, it is characterized in that: action bar and bracing frame adopt mechanical system to fix, have two pairs of pin-and-holes on the bracing frame, be pin-and-hole A and pin-and-hole C, also have two pairs of pin-and-holes on the support, i.e. pin-and-hole B and pin-and-hole D; The frame of weighing is 2, and bearing pin is 4; The bearing pin A on the frame (41) of weighing is installed in a pair of pin-and-hole A on the bracing frame, in the rack-mount a pair of pin-and-hole B of bearing pin B; The bearing pin C on the frame (42) of weighing is installed in a pair of pin-and-hole C on the bracing frame, in the rack-mount a pair of pin-and-hole D of bearing pin D; Above-mentioned 2 weigh frame and 4 bearing pins composition four-bar mechanisms; Sensor clip is in the centre of two framves of weighing, and one side is connected with the frame of weighing by mechanical mode, and the another side roof pressure is on another weighs frame; The other end of support is connected with the jib of aerial work platform.