JPS5817940A - Detector for turning of slewing stand in construction equipment - Google Patents

Abstract

PURPOSE:To detect the turning of a slewing stand properly by mounting a light receiver and a light emitter to the slewing stand so as to be integrally turned, setting up a cylindrical body for shielding light intermittently having transmitted light to a travelling base and displaying the angle of turning in an operation chamer by information from an operating lever and the number of light reception. CONSTITUTION:The light receiver 14 and the light emitter 13 are mounted to the outer circumferential edge of thd slewing stand 3 of a backhoe, etc. so as to be integrally turned, the cylindrical member 16 for shielding light with light transmitting holes 15 at proper intervals in the circumferential direction is fixed to a travelling base, and projecting light being accompanied by the turning of the slewing stand 3 is intermittently transmitted to the light receiver 14. The turning of the slewing stand 3 is light-received by means of the light receiver 14, the angle of turning is calculated by means of a count circuit 19, and the angles of left and right turning of the slewing stand 3 are decided by means of a device 21 by informations 18a, b from the operating lever 17, and displayed to a device 22 in the operation chamber.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides an I/L method for detecting the amount of rotation of a swivel base in a port machine such as a boat hook, a horizontal shovel, or a crane truck.
The purpose of IIL is to enable detection by reasonable means over a wide range of time periods, and in a state where the detection results are in the form of information that is easy to process. be.

Embodiments of the present invention will be described below with reference to illustrative drawings.

Figure 1 and! As shown in Figure 2, the crawler traveling device il
+41 is attached to the lower part of the swivel base (3) to the internal gear (2) housed in the traveling machine stand equipped with
, M@/c? 0011iJ ri and 07 tu externally fitted through the steel ball (6) for forward/reverse rotation operation of the swivel table.
A high-performance hydraulic motor (6) is attached to the swivel base (3), and the small pole gear (7) which is rotated (9) by the motor (6) is #
A force that causes r'J to engage with the internal tooth gear (2),
The swivel base i31 VC,
1) Poom-, which can be moved vertically and swung, Arm l1ll and Arm O
By attaching a packhook device consisting of a powerful bagut QIl to υ, a backhook device capable of performing ground excavation work is installed as shown in Figures 8 to 4. It receives the light continuously projected from the light emitting device I and the light emitting device.
, The light-emitting cylindrical member O, which is attached to the swivel base (set) so as to rotate together with it and has light passage holes formed at appropriate intervals in the circumferential direction, is fixed to the front running base. As the rotating base (3) rotates, the projected light reaches the light receiving device 84.
The control lever Oη for the control valve (not shown) of the hydraulic motor (6) is in a neutral position (from P to left l).
@ position (swivel base left t that is suppressed when operated to υ)
g1g state detection switch (18m) and swivel base clockwise rotation state detection switch (which is suppressed when the operation lever is operated from the neutral position to the same position It (R) K) (
18b) is provided. And the light receiving device *1+
A device for resetting the circuit in the operating cabin 191 is provided with a kakuto circuit that counts the number of times the light reception state of the light is detected, and a device that resets the kakuto circuit when the swivel table (31 is operated to the reference rotation phase along the forward direction of the aircraft) is installed in the operating cabin 191. Inside & put digital data from Kakunto circuit I and both switches (18 Kameido (
Based on the signal from 18b), the swivel platform (310mtt
: Amount of left and right rotation from the reference rotation phase, i.e. swivel base (3)
8j1 A circuit that determines the rotation @ angle to the left and right from the reference reference phase? Set up an illusion, and further distinguish it lol
The left or right rotation angle of the swivel base (31) from the reference rotation phase is determined based on the digital data from the
A device (2) for setting zo to the maximum and displaying the next state is provided in the operator cabin (9), so that the operator can be accurately informed of the rotational position of the swivel base (3).

In the embodiment, in order to detect the rotational position of the swivel base (3), the amount of rotation of the swivel base (3) from the reference rotation phase was detected. 3) can also be used to detect the amount of rotation of 1111 from the rotational phase of the swivel table ts+ at that point. The relative of the member H that switches between the emitted light record light receiving device 94 K m1 and the non-reaching state is type 2 change history ti (function). For example, as described in the embodiment, the light passing hole #- is shaped like IIU, the shape of the hole may be a round hole, as shown in Figure 6, or a notch, as shown in Figure 6. Also, although I will not give any examples,
In order to reflect the projected light from the light emitting device 01 at the switching member and receive the light at the light receiving device i1,
It is configured to be able to reflect light, and has light escape holes or light absorbing S portions formed at appropriate intervals in the circumferential direction, and further, as described in the embodiment, for each of the light emitting device 11 and the light receiving device 114. It may be provided so as to be relatively movable as the rotating base 1$1 rotates. And the unit l & of the swivel base tit
It is also possible to change the number of times of switching for the Il & amount in various ways.
J. (18b) t sFi! ,t runi,fit,t
For example, a light linking member that is integrally moved with the user valve operating lever (lno) is provided, and the light linking member allows the device to receive light projected from the light emitting device and the state in which it does not receive light. It is possible to change the quality of each cypress, such as by switching to detect the operation state S of 0/0η.

In addition, in the example, Jl! As m4!I for determining the amount of rotation of the rotating base (31), an example consisting of a cacunto circuit 4 and a discrimination circuit @phantom was illustrated, but # indicates the sharp left rotation of the rotating base (31) and the rotating base (3). The light receiving device in each clockwise rotation shape w
It is only necessary to be able to determine the number of variations (b) in the light receiving state in one area, and various a configurations are possible.

Further, the detection device according to the present invention automatically moves the swivel base (3) to a desired set rotational position by Vcl! ! It can be used for various purposes, such as using ITki.

In summary, the device for detecting the amount of rotation of a swivel base in a construction machine according to Book 4 @ Akira is equipped with a device 1114+ that receives light continuously projected from a light emitting device t (II), and a forward/reverse direction Kf
With the rotation #I of the swivel base (3) capable of llJ, a member is provided that intermittently controls VcvJIII between the state in which the projected light reaches the light receiving unit and the state in which it does not reach the light receiving unit. Device to detect rotation direction (18m)・(
18b) aIIai to determine the amount of 1g1 rotation of the swivel base +31 based on the information of the light receiving device *tn and the information of the rotation direction detection device (18m door (18b))
It is characterized in that ll/@醗 is an IR line.

That is, the light receiving state of the light receiving device IJ41 is intermittently varied as the turning table 13) prepares 1g1 plate, and the variation 11
1! It is a non-contact type that makes effective use of the light emitting device 01 and the light receiving device A41, and is designed to determine the amount of rotation of the swivel base (3) based on the detection results of the number of l and the rotational force of the swivel base +31. Since it is designed to be detected by the structure, it is possible to perform accurate detection over a long period of time, and the amount of rotation can be extracted as digital data, compared to extracting it as analog data. , the detection results can be conveniently used for various purposes with an inexpensive arithmetic processing structure.More specifically, as a means for detecting the amount of rotation of the ljA turntable i31, relative sliding of a button meter or the like is used. Place the sensor equipped with the component on the swivel base [3]! I
＠One possibility is to install the sensor so that it slides during operation so that the amount of rotation can be retrieved as analog data, but in this case, it would be a hassle to frequently check and adjust the sensor to deal with wear. However, using the detection results has the disadvantage of requiring a complex and expensive arithmetic processing structure.

[Brief explanation of the drawing]

The drawings illustrate the advantages of implementing the rotation amount detection device of a swivel base in a construction machine V'c according to the present invention, and FIG. The cutaway side view, Figure @8 is a perspective view of the cylindrical member, Figure 4 is a block diagram, and Figures %5 and f16 are perspective views of different embodiments.〇(3)... Swivel base, odor...start,
Device, t141... Light receiving device, H...
Switching member, (18a) I (18b)...Rotation amount detection device, l11113υ...Rotating heron separate pot structure.

Claims (1)

[Claims] Light emitting device (receives light continuously projected from the field*
11114, and a member a- that intermittently switches between a state in which the projected light reaches the light receiving device I and a state in which it does not reach the light receiving device I as the rotating base (3) that can be driven in forward and reverse directions is rotated; 5111 to detect the rotation direction of the swivel table (3)
1 (18m) and (19b), and the light receiving device 94
and the rotational direction detection device (18m)/(18b
1!!1 rotation amount detection device for a swivel base in a 1s machine, characterized in that the swivel base (1!!1 rotation amount detection device 0 for a 1s installation machine is provided) for determining the rotation amount 1 of a button based on the information of the swivel base (button rotation amount 1).