KR20000041194A - Installation device and method of working range of telescopic handler - Google Patents

Abstract

PURPOSE: Installation device and method of working range of telescopic handler is provided to offer a variety of separated working modes and set critical values by working environment. CONSTITUTION: Installation device and method of working range of telescopic handler comprises; a gyration-sensing part(22) perceiving gyration of all direction; an out trigger-sensing part perceiving the contraction and extension of an out trigger; a load-sensing part(26) perceiving the load on telescopic handler; a control device(28) where working variables which are applied to the working mode on gyration of all direction and contraction and extension of an out trigger, and load chart on critical value of maximum load to each working mode are inputted; a warning part(30) which gives the alarm when perceived maximum load from each warning mode exceeds the critical value.

Description

Device for setting work area of telescopic handler and method

The present invention relates to an apparatus and a method for setting a work area of a telescopic handler, and more particularly, to divided into a front and rear work, a left and right work, a work in a contracted state of an outrigger, and a work in an extended state when the telescopic handler is turned. The present invention relates to a work area setting device and a method of a telescopic handler capable of automatically determining a safe work area.

Generally, but not limited to, a hydraulic vehicle is a telescopic handler, which is widely used to lift and unload a relatively heavy load by telescopic boom telescopic boom and move it to a predetermined position. Of course, the telescopic boom of such a telescopic handler typically consists of an outer boom segment, an inner boom segment and an intermediate boom segment inserted between each of these boom segments to adjust the overall length of the telescopic boom.

The telescopic handler, which is a general hydraulic vehicle, will be described with reference to FIGS. 1A and 1B. The front wheels 2 and the rear wheels 3, which are rotatably mounted on an axle not shown, are installed at the front and rear of the vehicle body 1, respectively. It is. In addition, both front and rear sides of the vehicle body 1 are provided with an outtrigger 4 so that the vehicle body can be stably and firmly fixed to the ground. Moreover, the pivot shaft 5 is provided in the upper part of the vehicle body 1, The upper pivot structure 6 which is freely rotatable with respect to the pivot shaft or the vehicle body 1 is provided in the pivot shaft 5.

On the other hand, the front of the upper swing structure 6 is provided with a cabin 7 for the operator to ride and drive, and behind the upper swing structure 6 extends toward the front through the side of the cabin 7 And as described above, a telescopic boom 8 is provided which may consist of an outer boom segment 8a, an inner boom segment 8b and an intermediate boom segment 8c or may consist of two or four or more segments. Of course, the outer boom segment 8a of the telescopic boom 8 is provided with a lift cylinder 9 that can adjust the angle of the entire telescopic boom 8, and the telescopic boom 8 is not shown telescopic. It is configured to contract and expand by the operation of the cylinder.

Further, a fork carriage 10 is rotatably mounted at the tip of the telescopic boom 8, more specifically, at the tip of the inner boom segment 8a, and the fork carriage 10 is also the inner boom segment 8c. It is rotated by the carriage cylinder 11 installed at the tip of the.

Accordingly, while the body 1 is stably balanced on the ground, the operator manipulates the height and the length of the telescopic boom 8 to lift or unload cargo into the fog carriage 10 as well as a predetermined position. You can move the cargo to

However, when turning such a general telescopic handler, the turning work area is arbitrarily set by the operator's or operator's prediction and judgment, so it is impossible to accurately detect and set a stable work area and also to warn appropriately when an overload occurs during work. There was a problem that can not run the work stably without a safety problem.

In addition, the pivoting operation of the telescopic handler may be performed when the outrigger is deployed in a rectangle rather than a square or the outrigger is not deployed, for example, a forward and backward turning operation, a left and right turning operation, or an outrigger contraction or extension. In spite of executing various work modes, the work is executed only by the set load chart on average, and there is a problem in that the work cannot be efficiently executed according to each work mode.

Accordingly, the present invention has been made to solve the above-described problems, an object of the present invention is to set the work area of the telescopic handler that can divide the work area by various work modes of the telescopic handler and execute the work by the load chart corresponding thereto. To provide a device.

Another object of the present invention is to provide an apparatus for setting a work area of a telescopic handler that can properly warn a driver of an overload when working in each work mode.

Another object of the present invention relates to a method for setting a work area of a telescopic handler that can divide a work area according to various work modes of the telescopic handler and execute a work for each load chart.

1A and 1B are side and back views of a typical telescopic handler.

Figure 2a and 2b is a side view and a rear view showing the installation state of the work area setting device of the telescopic handler according to the present invention.

Figure 3 is a diagram showing a work area during the turning operation of the telescopic handler according to the present invention.

4 is a flowchart showing a method for setting a work area of a telescopic handler according to the present invention.

♣ Explanation of symbols for the main parts of the drawing ♣

1: body 5: pivot

20: sensing plate 22: turning detection unit

24: outrigger detection unit 26: load detection unit

28: controller 30: warning unit

Z1: Forward and backward work area Z2: Left and right work area

These objectives are provided in a telescopic handler consisting of a vehicle body having front and rear driving wheels and a support outrigger, an upper pivot body pivotable about a pivot of the vehicle body, and a telescopic boom elastically mounted on the upper pivot body. Swivel detector for detecting whether the telescopic handler is turning forward and backward and left and right, outrigger detector for detecting whether the outrigger is contracted or extended, and load detector for detecting load applied to the telescopic handler. And a work variable for applying to each working mode which is divided into forward and leftward and leftward turning operations of the upper swing body and a stretched or contracted state of the outrigger and a threshold value corresponding to the maximum load in the respective working modes. A control device in which a plurality of set load charts are input, and a load sensed in each of the working modes It can be achieved by setting each of the turning operation of the telescopic handler unit which comprises parts of a warning to warn the threshold is greater than the value set in this driver load chart.

It is also an object of the present invention to provide a first rod chart in which a work variable and a maximum lifting load threshold are set while the outrigger is fully extended during the forward and backward turning operation, and the outrigger is turned during the forward and backward turning operation. The second rod chart, in which the work variable and the maximum lifting load threshold are set in the unextended state, and the work variable and the maximum lifting load in the state in which the outrigger is extended and the handler is supported in the left and right turning operation, Setting the turning work area of the telescopic handler with a set third rod chart and a control device in which a fourth load chart in which the work variable and the maximum lifting load threshold are set in the contracted state of the outrigger is retracted during the left and right turning operation. In the method, the step of determining whether the operation of the telescopic handler is the forward and backward turning operation, and if the determination result is the forward and backward turning operation Determining whether the outrigger is extended, applying the first road chart if the outrigger is extended, and applying the second road chart if the outrigger is not extended, Or determining whether the outrigger is extended after judging by the left and right turning operation, applying a third rod chart if the outrigger is extended, and applying a second rod chart if the outrigger is not extended. It can be achieved by the work area setting method of the telescopic handler.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figures 2a and 2b is a side view and a front view showing the installation state of the work area setting apparatus of the telescopic handler according to the present invention, Figure 3 is a front and rear work and left and right direction during the turning operation of the telescopic handler according to the present invention A diagram showing a work area is shown, and in FIG. 4 is a flowchart showing the operation and method of the work area setting device of the telescopic handler according to the present invention. The components of the telescopic handler shown in FIG. The same parts as are indicated by the same reference numerals.

First, referring to FIGS. 2A and 2B, the apparatus for setting a work area of a telescopic handler according to the present invention is installed on the upper surface of the vehicle body at the front and rear of the pivot 5 to define the front and rear working modes of the telescopic handler. A rotating sensing unit 22 for sensing each sensing plate 20 is provided at the bottom of the cabin or upper swing structure 6, which includes a sensing plate 20 and is rotatable about its pivot 5. Include.

In addition, the outrigger detection unit 24 that can detect the deployment of the outrigger at a predetermined position of the vehicle body of the telescopic handler, more specifically, the position where the contraction and extension of the outrigger 4 can be detected. ) And a load applied to the telescopic handler at a portion of the upper swing structure 6 which coincides with a predetermined position of the upper swing structure 6 of the telescopic handler, i.e., coincides with the central axis of the pivot shaft 5). Load sensing unit 26 for detecting the is installed.

On the other hand, each of these sensing units 22, 24, 26 is addressed to a control device 28, such as a microcomputer, which is basically installed in the telescopic handler, which also has a telescopic handler in each working mode. In order to warn the driver of an overload, a warning unit 30 is connected, which can be implemented, for example, as a buzzer or a lamp.

In particular, a load chart corresponding to each work mode is set and input to the control device 28. For example, the first load chart L1 extends the outriggers fully in the forward and backward turning operation to support the handler. The threshold value of the work variable and the maximum lifting load in the state is set, and the threshold value of the work variable and the maximum lifting load is set in the second rod chart L2 when the outrigger is not extended during the forward and backward turning operation. In the third rod chart L3, the threshold value of the work variable and the maximum lifting load when the outrigger is extended and the handler is supported in the left and right turning operation is set, and the fourth rod chart L4 is set in the fourth rod chart L4. The threshold value of the work variable and the maximum lifting load when the outrigger is retracted during the left and right turning operation is set. Of course, the work variables and thresholds in each of these working modes can be arbitrarily set based on various experiments and data according to the rated capacity and performance of the telescopic handler.

Hereinafter, the operation of the telescopic handler according to the present invention configured as described above will be described in detail with reference to FIGS. 3 and 4.

First, the turning work area of the telescopic handler is divided into a forward and backward turning work area Z1 and a left and right turning work area Z2 as shown in FIG. 3. It is divided by the sensing plate 20 installed in the vehicle body. That is, the sensing plate 20 is formed of, for example, a quarter-shaped plate, and as described later, when the line sensing unit 22 is positioned on the sensing plate 20, the sensing plate 20 performs forward and backward turning operations. If it can be determined that the left and right turning operation.

In such a state that the turning work area is set, for example, when the control device 30 is turned on as the engine is operated to operate the telescopic handler, the turning detection area 22 is used to move to the front and rear turning work area range. It is determined whether belonging to the front and rear turning operation (S101).

As a result of the determination, in the forward and backward turning operation, the outrigger detection unit 24 detects whether the outrigger 4 is extended to determine whether the outrigger is extended (S102), and the outrigger 4 is extended. If the driver is within the range of the load chart corresponding to the above-described condition, that is, the first load chart L1 stored in the control device 28, the driver executes the turning operation of the telescopic handler (S103). On the contrary, if it is determined that the outrigger is not extended in the outrigger extension determination step (S102), the driver may execute the telescopic handler turning within the range of the second road chart L2 stored in the control device 28.

On the other hand, if it is determined in the step S101 whether the front and rear turning operation, it is determined that it is not the front and rear turning operation, that is, if the front and rear direction sensing unit 22 is out of the front and rear turning operation area, it is actually left and right In this state, the outrigger detection unit 24 detects whether the outrigger 4 is extended and determines whether the outrigger is extended (S105), so that the outrigger 4 is extended. If the driver is within the range of the road chart corresponding to the above conditions, that is, the third road chart L3 stored in the control device 28, the driver executes the turning operation of the telescopic handler (S106). However, if it is determined that the outrigger is not extended in the outrigger extension determination step (S105), the driver executes the turning operation of the telescopic handler within the range of the fourth road chart L4 stored in the control device 28 ( S107).

Thereafter, while performing the turning operation within the range of each of the road charts L1, L2, L3, and L4, the load actually applied to the telescopic handler is detected using the load sensing unit 26 (S108). It is determined whether the loaded load is larger than the threshold value set in each of the load charts L1, L2, L3, and L4 (S109), and as a result, the threshold value of each load chart corresponding to the load detected in each work mode is determined. If larger, for example, by operating the warning unit 30, which may include a buzzer or a warning light (S110) to warn the driver or operator. Of course, if the detected load is less than the threshold value, it is either to continue the predetermined turning operation or to repeatedly execute the steps as described above.

Accordingly, different road charts can be applied depending on the work environment for the various work modes that telescopic can execute, so that the driver can perform stable and efficient turning work.

As a result, according to the apparatus for setting a work area of a telescopic handler according to the present invention, a work mode that can be executed in the telescopic handler is variously divided, and a critical work environment is set according to each work mode, so that stable and efficient work can be performed. There is a workable effect.

Claims (5)

A vehicle body 1 having front and rear wheels 2 and 3 for driving and an outrigger 4 for support, an upper swing body 6 rotatable about a pivot 5 of the vehicle body, and an upper swing body thereof In the telescopic handler composed of a telescopic boom (8) elastically installed in the A turning detection unit 22 for detecting whether the telescopic handler rotates forward and backward and left and right directions; An outrigger detector 24 for detecting whether the outrigger 4 is contracted and extended; A load sensing unit 26 for sensing a load applied to the telescopic handler, Thresholds corresponding to the maximum load in each work mode and work variables for applying to each work mode divided into forward and leftward and leftward turning operations of the upper swing body 6 and a stretched or contracted state of the outrigger. A control device 28 into which a plurality of road charts L1, L2, L3, and L4 having values set are input; The turning work setting device of the telescopic handler, characterized in that consisting of a warning unit (30) for warning if the load detected in each working mode is greater than the threshold value set in each load chart. The swing detection unit according to claim 1, wherein the swing detection unit is provided in the vehicle body 1 part in front and rear of the pivot shaft 5 to distinguish the forward and backward pivoting work area of the upper pivot body 6 and the left and right pivoting work area. Device for setting a work area of a telescopic handler, characterized in that it further comprises a sensing plate 20 is detected by. According to claim 1, wherein the first load chart (L1) of each of the load charts, the outrigger is fully extended during the forward and backward turning operation, the threshold value of the work variable and the maximum lifting load in the state supporting the handler is set; On the second rod chart L2, the threshold value of the work variable and the maximum lifting load when the outrigger is not extended during the forward and backward turning operation is set, and the third rod chart L3 is set out during the left and right turning operation. The threshold value of the work variable and the maximum lifting load when the trigger is extended to support the handler is set, and the fourth load chart L4 sets the work variable and the maximum lifting when the outrigger is retracted during the left and right turning operation. The work area setting device of the telescopic handler, characterized in that the threshold value of the load is set. The first load chart that sets the working variable and the maximum lifting load threshold when the outrigger is fully extended to support the handler in the forward and backward turning operation, and the outrigger is not extended during the forward and backward turning operation. A second rod chart having a variable and a maximum lift load threshold set, a third rod chart having a threshold value of a work variable and a maximum lift load when the outrigger is extended to support the handler during left and right turning operations; In the turning work area setting method of a telescopic handler having a control device in which a fourth load chart in which a work variable and a maximum lifting load threshold value are set in a state in which the outrigger is retracted during a left and right turning operation is provided. Determining whether the operation of the telescopic handler is a forward / backward turning operation (S101), As a result of the determination, it is determined whether the outrigger is extended in the forward and backward turning operation (S102), and if the outrigger is extended, the first rod chart is applied (S103), and if the outrigger is not extended, the second rod chart is applied. Step S104, If it is determined in the step (S101) that it is not the forward and backward turning operation, it is determined whether the outrigger is extended after judging by the left and right turning operation (S105), and if the outrigger is extended, the third rod chart is applied (S106), And if the outrigger is not extended, applying a second road chart (S107). The method of claim 4, further comprising: detecting a load applied to a work mode according to the independent application of each of the road charts (S108); It is determined whether the detected load is greater than the threshold set in the corresponding load chart (S109), and if the detected load is greater than the threshold, operating a warning unit (S110) further comprising the work area of the telescopic handler. How to set up.