KR101595248B1 - Heavy equipment attachment hydraulic cylinder system with magnetic sensor for sensing exchange interval of seal - Google Patents

Abstract

The present invention relates to a hydraulic cylinder system for attaching a construction heavy equipment having a magnetic sensor for detecting a real exchange period, and more particularly, to a hydraulic cylinder system for attaching to a load head (107) And a magnetic sensor 120 mounted on the cylinder head 108. The magnetic sensor 110 includes a magnetic sensor 110 and a magnetic sensor 120. The magnetic sensor 110 includes a magnetic sensor 110, And a receiving unit 300 for receiving a signal transmitted from the transmitting unit 200. The receiving unit 300 receives a transmission signal transmitted by the transmitting antenna 240 of the transmitting unit 200, A reception signal processing unit 302 for processing a transmission signal received by the reception antenna 301 as a reception signal, a reception signal processing unit 302 for processing the transmission signal received by the reception signal processing unit 302, A reception control section 303 for transmitting the received signal to the reception MCU 304 and a reception control section 303 for receiving a signal indicating that the number of strokes of the cylinder rod 103 received by the reception control section 303 has reached a preset number A day counter 307 for counting the current use count of the stroke of the hydraulic cylinder 100 under the control of the receiving MCU 304 and a buzzer 305 and an LED 306 for transmitting sound and light to the user, A cylinder operation counter 308 for counting the total use count of the stroke of the hydraulic cylinder 100 under the control of the receiving MCU 304 and a total counter 309 for counting the number of times of exchanging the chambers 111, A day counter reset switch 310 for resetting the day counter 307, a cylinder operation counter reset switch 311 for resetting the cylinder operation counter 308, The processing unit 302, A buzzer 305, an LED 306, a day counter 307, a cylinder operation counter 308, a total counter 309, a day counter reset switch 310 and a cylinder action counter reset switch 311, And a reception MCU 304 for controlling the operation of the cylinder operation counter 308 when the cylinder operation counter reset switch 311 is operated after the chamber 111 of the hydraulic cylinder 100 is replaced. And the count display of the total counter 309 is counted up by one.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a hydraulic cylinder system for attaching a construction heavy equipment having a magnetic sensor for sensing a real exchange period.

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a hydraulic cylinder system for attachment of a construction heavy equipment having a magnetic sensor for sensing a real exchange period, and more particularly to a hydraulic cylinder system for a construction equipment using a magnetic sensor, And more particularly to a hydraulic cylinder system for attaching a construction heavy equipment having a magnetic sensor for sensing a change period of a seal that can check an exchange cycle of a cylinder.

In general, the stroke sensor is mounted on various industrial devices such as a farm machinery and a work table so as to maintain the level of the rolling and rolling of the farm machinery and the vertical movement of the work table.

Such conventional stroke sensors are provided so as to be spaced apart from the hydraulic cylinder and connected to each other by a structure such as a link and a wire so that power is transmitted from the hydraulic cylinder to each link and wire when the piston rod is extended and retracted, The expansion / contraction amount of the piston rod of the hydraulic cylinder is detected.

However, since the conventional stroke sensor is separated from the hydraulic cylinder, the reliability of the accurate control and measurement is degraded. Also, since each link and wire for operating the sensor are exposed to the outside, And the like.

To solve these problems, Korean Patent No. 10-0797776 has been developed.

The prior patent discloses a hydraulic cylinder; A piston rod inserted in the hydraulic cylinder so as to be stretchable and retractable in a proper stroke; And a hydraulic cylinder expansion / contraction amount measuring portion provided between one side of the piston rod and one side of the hydraulic cylinder for measuring the expansion / contraction amount of the hydraulic cylinder

Wherein the hydraulic cylinder expansion / contraction measuring device (20) is provided so as to protrude from one side of the hydraulic cylinder (10) and comprises a front case (21) and a rear case (22) A sensor case 23; A vertical bracket 25 installed at one side of the piston rod 12 and having a slot 25a; A power transmission member 30 provided inside the front case 21 of the sensor case 23; Horizontal fixed connection means (A) horizontally connected between the power transmitting member (30) and the vertical bracket (25) to operate the power transmitting member (30); And a potentiometer (40) provided inside the rear case (22) of the sensor case (23) so as to be rotatably connected to the power transmitting member (30) and sensing the amount of expansion and contraction of the hydraulic cylinder (10) And the stroke sensor is integrated to increase the reliability of the measurement because the movement length is short. The power transmitting member for operating the sensor is located inside the case, so that it is not corroded even when used for a long time, thereby maximizing durability and life. The spring is fixed inside the wire, and the wire is elastically stretched when the wire is operated and is returned to the wire, so that the wire can be tightly supported and the accurate detection of the hydraulic cylinder can be maintained.

However, the prior art has a problem in that it can not check the replacement cycle of the cylinder thread by counting the number of strokes of the piston only by detecting the expansion / contraction amount of the hydraulic cylinder by the potentiometer.

1. Korean Patent No. 10-0797776 entitled "Hydraulic Cylinder with Integrated Stroke Sensor" (registered on January 18, 2008)

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a cylinder head which is mounted on a cylinder head and which is coaxially opposed to a magnetic sensor inserted in a load head, And to provide a hydraulic cylinder system for attaching a construction heavy equipment having a magnetic sensor for sensing the actual exchange period in which the exchange period of the cylinder thread can be checked by counting the number of times.

A hydraulic cylinder system for attaching a construction heavy equipment having a magnetic sensor for detecting a real exchange period according to the present invention is mounted on a load head and is mounted on a cylinder head which detects a stroke of the stroke sensor A transmission unit for transmitting a signal received from the magnetic sensor of the hydraulic cylinder and a reception unit for receiving a signal transmitted from the transmission unit, A reception signal processing unit for processing a transmission signal received by the reception antenna into a reception signal; and a reception signal processing unit for transmitting a signal processed by the reception signal processing unit to a reception MCU A reception control section, and a reception control section A buzzer and an LED for transmitting to the operator of the hydraulic cylinder sound and light emission that the number of strokes of the cylinder rod has reached a set number of times; and a buzzer and LED for counting the use count of the stroke of the hydraulic cylinder under the control of the receiving MCU A day counter, a cylinder operation counter for counting the total use count of the stroke of the hydraulic cylinder under the control of the reception MCU, a total counter for counting the number of times of actual exchange, and a day counter reset switch A cylinder operation counter reset switch for resetting the cylinder operation counter, and a reception antenna, a received signal processing unit, a reception control unit, a buzzer, an LED, a day counter, a cylinder operation counter, a total counter, a day counter reset switch, For controlling the operation of the switch When the cylinder operation counter reset switch is operated after the seal of the hydraulic cylinder is changed, the cylinder operation counter is initialized to zero and the count display of the total counter is counted up by one time .

As described above, in the hydraulic cylinder system for attaching construction heavy equipment having a magnetic sensor for detecting a real exchange period according to the present invention, when the number of strokes of the cylinder rod reaches a set number of times, the magnetic sensor senses the number of strokes, It is advantageous that the operator of the attachment of the heavy construction equipment can easily recognize the actual replacement period of the hydraulic cylinder.

Further, by properly performing maintenance of the hydraulic cylinder in use, there is an advantage that the life cycle of the hydraulic cylinder can be increased.

1 is a front structural view showing a hydraulic cylinder in which a conventional stroke sensor is integrally provided;
BACKGROUND OF THE INVENTION Field of the Invention [0001] The present invention relates to a hydraulic cylinder system for attaching a construction heavy equipment,
3 is a cross-sectional view showing a still state of the hydraulic cylinder according to the present invention.
Figure 4a is a front view of Figure 3;
Figure 4b is a top view of Figure 3;
5 is an enlarged view of the main part of Fig.
6 is a front view showing an operating state of a hydraulic cylinder system according to the present invention;
7 is a plan view of Fig.
8 is a block diagram of a transmitter for transmitting a sensing signal by a magnetic sensor for detecting a real exchange period according to the present invention.
9 is a block diagram of a reception unit for receiving a sensing signal by a magnetic sensor for sensing a real exchange period according to the present invention.

Hereinafter, a hydraulic cylinder system for attaching a construction heavy equipment having a magnetic sensor for detecting a real exchange period according to the present invention will be described in detail with reference to the drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions of the present invention, and they may vary depending on the intentions or customs of the client, the operator, the user, and the like. Therefore, the definition should be based on the contents throughout this specification. Like numbers refer to like elements throughout the drawings.

FIG. 2 is a block diagram of a hydraulic cylinder system for attachment of a heavy construction equipment having a magnetic sensor for sensing a real exchange period according to the present invention, FIG. 3 is a sectional view showing a hydraulic cylinder according to the present invention in a stopped state, Fig. 4A is a front view of Fig. 3, Fig. 4B is a plan view of Fig. 3, Fig. 5 is an enlarged view of Fig. 4, Fig. 6 is a front view showing an operating state of the hydraulic cylinder system according to the present invention, FIG. 8 is a block diagram of a transmitter for transmitting a sensing signal by a magnetic sensor for detecting a real exchange period according to the present invention. FIG. 9 is a block diagram of a transmitter for sensing a real exchange cycle according to the present invention. FIG. 2 is a block diagram of a receiver for receiving a sensing signal by a magnetic sensor. FIG.

As shown in FIGS. 2 to 7, a hydraulic cylinder system for attaching a construction heavy equipment having a magnetic sensor for sensing a real exchange period according to the present invention includes a hydraulic cylinder 100, a hydraulic cylinder 100 mounted on the hydraulic cylinder 100, A transmission unit 200 for wirelessly transmitting a signal received from the magnetic sensor 110 and a reception unit 300 for receiving a signal transmitted from the transmission unit 200.

Here, the hydraulic cylinder 100 is a hydraulic cylinder 100 for a construction heavy equipment attachment including a bucket, which is ATTACHMENT (not shown), and a hydraulic breaker. The hydraulic cylinder 100 is provided with a cylinder tube 101, a piston 102, and a cylinder rod 103. A bucket (not shown) is supported at the tip of the cylinder rod 103, and the rear end of the cylinder tube 101 is supported by an arm (not shown). When the pressurized oil is supplied to the oil chamber 104 on the lower side of the cylinder tube 101, the cylinder rod 103 is extended.

In addition, when pressurized oil is supplied to the oil chamber 105 on the cylinder head 108 side, the cylinder rod 103 is contracted. By the expansion and contraction of the cylinder rod 103, a bucket (not shown) can be rotated. The cylinder tube 101 is structured such that a load head 107 and a cylinder head 108 are attached to a cylindrical body 106. The cylinder rod 103 protrudes from the hole 109 of the cylinder head 108.

In the hydraulic cylinder 100, a magnetic sensor 110 is mounted on the load head 107, and a magnet 120 is mounted on the cylinder head 108 so as to be opposed to the magnetic sensor 110 in a coaxial manner have.

With this configuration, the hydraulic cylinder 100 for operation of heavy construction equipment including a bucket and a hydraulic breaker performs a shrinkage and extension operation, and the hydraulic cylinder 100 is rotated by the shrinking and stretching operation, The movement between the bottom dead center and the top dead center is a reciprocating motion. The movement between the bottom dead center and the top dead center is referred to as a stroke. Accordingly, such a stroke is sensed by the magnetic sensor 110 and the magnet 120 and counted by a counter to be described later.

4A and 4B, when the magnetic sensor 110 and the magnet 120 are close to each other because the hydraulic cylinder 100 is not operated, the stroke is counted. When the hydraulic cylinder 100 is operated and the magnetic sensor 110 and the magnet 120 are separated by the cylinder rod 103 as shown in Figs. 6 and 7, the stroke As shown in FIG.

8 and 9, a configuration of a transmitter and a receiver for transmitting and receiving a sensing signal by a magnetic sensor for sensing a real exchange period according to the present invention will be described in detail.

8, a transmitting unit 200 for transmitting a sensing signal by a magnetic sensor that senses an exchange period of a room 111 according to the present invention includes a sensing unit 110 for sensing a sensed signal generated by a magnetic sensor 110, A magnetic switch 210 operated by the magnetic switch 210; An A / D converter (not shown) for converting an analog signal generated by the operation of the magnetic switch 210 into a digital signal is built in, and a digital signal for digital filtering the digital signal converted by the A / A signal processing unit 220; A transmission signal processing unit 230 for processing the digital signal filtered by the digital signal processing unit 220 into a transmission signal; A transmission antenna 240 for transmitting a transmission signal processed by the transmission signal processing unit 230; A transmission MCU (Micro Controller Unit) 250 for controlling the operation of the magnetic switch 210, the digital signal processing unit 220, the transmission signal processing unit 230, and the transmission antenna 240; And a transmission control unit 260 for transmitting the status checked by the transmission MCU 250 to the reception unit 300 to be described later through the transmission antenna 240.

When the magnetic switch 210 is operated by the sensing signal generated by the magnetic sensor 110 and the analog signal generated by the operation of the magnetic switch 210 is input to the built- The digital signal processor 220 digitally filters the digital signal converted by the A / D converter, processes the filtered digital signal as a transmission signal by the transmission signal processor 230, and transmits the processed signal to the transmission antenna 240 The transmission signal processing unit 230 and the transmission antenna 240 are connected to the transmission MCU 250. The transmission signal processing unit 230 and the transmission signal processing unit 230 are connected to the transmission switch 240, And controls the transmission control unit 260 to transmit the controlled state through the transmission antenna 240 to a reception unit to be described later.

The transmission unit 200 is mounted on a construction equipment attachment (not shown) including a bucket, an hydraulic breaker, and the like, which is an attachment of a construction heavy equipment, and is operated by a battery or a solar cell.

9, a receiving unit 300 for receiving a signal transmitted by a transmitting unit 200 for transmitting a sensing signal by a magnetic sensor that senses a real exchange period according to the present invention, A reception antenna 301 for receiving a transmission signal transmitted by a transmission antenna 240 of the base station 200 and a reception signal processor 302 for processing a transmission signal received by the reception antenna 301 into a reception signal A reception control unit 303 for transmitting the signal processed by the reception signal processing unit 302 to the reception MCU 304 and a control unit 303 for controlling the number of strokes of the cylinder rod 103 received by the reception control unit 303 A buzzer 305 for acoustically transmitting the situation of the hydraulic cylinder 100 to the operator of the hydraulic cylinder 100 and a state of the number of strokes of the cylinder rod 103 received by the reception control unit 303, (100) A day counter 307 for counting the current use count of the stroke of the hydraulic cylinder 100 under the control of the receiving MCU 304, A cylinder operation counter 308 for counting the total use count of the stroke of the hydraulic cylinder 100 under the control of the control unit 304, a total counter 309 for counting the number of times of exchanging the room 111, A cylinder operation counter reset switch 311 for resetting the cylinder operation counter 308 and a reception counter 302 for resetting the reception antenna 301 and the reception signal processing unit 302, A reception control unit 303, a buzzer 305, an LED 306, a day counter 307, a cylinder operation counter 308, a total counter 309, a day counter reset switch 310 and a cylinder operation counter reset switch 311 for controlling the operation of the receiving MCU 3 04).

The receiving antenna 300 of the receiving unit 300 receives the transmitting signal transmitted through the transmitting antenna 240 of the transmitting unit 200 and outputs the received transmitting signal The reception signal processing unit 302 processes the reception signal and the reception control unit 303 transmits the processed signal to the reception MCU 304. The reception MCU 304 notifies the buzzer 305 and / And transmits it to the operator of the hydraulic cylinder 100 with sound or light emission by the LED 306, thereby allowing the operator to recognize the thread 111 exchange period.

Thereafter, the day counter 307 and the cylinder operation counter 308 are reset by the day counter reset switch 310 and the cylinder operation counter reset switch 311 to initialize all the states.

Hereinafter, the operation of the day counter 307, the cylinder operation counter 308, and the total counter 309 of the receiving unit 200 according to the present invention will be described in detail.

First, when the hydraulic cylinder 100 is operated and the magnetic sensor 110 and the magnet 120 are separated from each other, the operation of the stroke is sensed and transmitted to the receiving unit 300 through the transmitting unit 200, The day counter 307 and the cylinder operation counter 308 count up the count display once. The day counter 307 counts the number of strokes of the hydraulic cylinder 100 on that day and the cylinder operation counter 308 counts the total number of strokes of the hydraulic cylinder 100.

Thereafter, if the up counted count is the same as the cylinder operation count set in the memory (not shown) of the receiving MCU 304 by the receiving MCU 304, then a specific color, preferably a red actual exchange LED (306) flickers and generates sound by the buzzer (305) to recognize the replacement cycle of the chamber (111) to the operator of the hydraulic cylinder (100).

Thereafter, when the cylinder of the hydraulic cylinder 100 is replaced and the cylinder operation counter reset switch 311 is operated, the cylinder operation counter 308 is initialized, and at the same time, the total counter 309 counts up the count display once.

Here, when the day's work using the hydraulic cylinder 100 is completed and the day counter reset switch 310 is operated, the count of the day counter 307 is initialized.

When the number of strokes of the cylinder rod 103 sensed through the magnetic sensor 110 reaches a set number of times, the hydraulic cylinder system for a construction heavy equipment attachment having a magnetic sensor for sensing a real exchange period according to the present invention, By informing the user through the light emission, a construction heavy equipment attachment operator including buckets, hydraulic breakers, and the like, which are attachments of construction heavy equipment, can easily recognize the replacement cycle of the chamber 111 of the hydraulic cylinder. In addition, by properly performing maintenance of the hydraulic cylinder 100 in use, the life cycle of the hydraulic cylinder 100 can be increased.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, Various changes, modifications or adjustments to the example will be possible. Therefore, the scope of protection of the present invention should be construed as including all changes, modifications, and adjustments that fall within the spirit of the technical idea of the present invention.

100: Hydraulic cylinder 101: Cylinder tube
102: piston 103: cylinder rod
104: lower side oil chamber 105: oil chamber
106: cylinder 107: load head
108: cylinder head 109: hole
110: Magnetic sensor 120: Magnetic
200: transmitting unit 210: magnetic switch
220: Digital Signal Processing Unit 230: Transmission Signal Processing Unit
240: transmitting antenna 250: transmitting MCU
260: transmission control unit 300:
301: Receive antenna 302: Received signal processor
303: Reception control unit 304: Receiving MCU
305: buzzer 306: LED
307: Day counter 308: Cylinder motion counter
309: Total counter 310: Day counter reset switch
311: Cylinder motion counter reset switch

Claims (5)

A hydraulic cylinder 100 having a magnetic sensor 110 mounted on the load head 107 and sensing a movement of a stroke of a predetermined distance or more from the magnet 120 and a magnet 120 mounted on the cylinder head 108 A transmission unit 200 for transmitting a signal received from the magnetic sensor 110 of the hydraulic cylinder 100 and a reception unit 300 for receiving a signal transmitted from the transmission unit 200,
The reception unit 300 includes a reception antenna 301 for receiving a transmission signal transmitted by the transmission antenna 240 of the transmission unit 200 and a reception antenna 301 for receiving the transmission signal received by the reception antenna 301, A reception control unit 303 for transmitting a signal processed by the reception signal processing unit 302 to the reception MCU 304 and a reception control unit 303 for receiving A buzzer 305 and an LED 306 for transmitting to the operator of the hydraulic cylinder 100 sound and light emission that the number of strokes of the cylinder rod 103 has reached a set number of times, A day counter 307 for counting the current use count of the stroke of the hydraulic cylinder 100 under the control of the receiving MCU 304 and a count counter 307 for counting the total use count of the stroke of the hydraulic cylinder 100 under the control of the receiving MCU 304 A cylinder operation counter 308 for the cylinder, A total counter 309 for counting the number of times the chamber 111 is exchanged, a day counter reset switch 310 for resetting the day counter 307, a cylinder operation counter 308 for resetting the cylinder operation counter 308, The reset switch 311 and the reception antenna 301, the reception signal processing unit 302, the reception control unit 303, the buzzer 305, the LED 306, the day counter 307, the cylinder operation counter 308, And a receiving MCU 304 for controlling the operation of the counter 309, the day counter reset switch 310 and the cylinder operation counter reset switch 311,
After the cylinder 111 of the hydraulic cylinder 100 is replaced and the cylinder operation counter reset switch 311 is activated, the cylinder operation counter 308 is initialized to zero and the count display 309 of the total counter 309 And a magnetic sensor for detecting a real exchange period. The hydraulic cylinder system for attaching a construction heavy equipment according to claim 1,
The method according to claim 1,
The transmission unit 200 includes a magnetic switch 210 operated by a sensing signal generated by a magnetic sensor 110 and a switch A 210 for converting an analog signal generated by the operation of the magnetic switch 210 into a digital signal, A digital signal processing unit 220 for digital-filtering the digital signal converted by the A / D converter with a built-in A / D converter, a digital signal processor 220 for processing the digital signal filtered by the digital signal processor 220 A transmission antenna 240 for transmitting a transmission signal processed by the transmission signal processing unit 230 and a transmission antenna 240 for transmitting the transmission signal processed by the transmission signal processing unit 230. The magnetic switch 210, A transmission microcontroller unit 250 for controlling the operation of the processing unit 230 and the transmission antenna 240 and a reception unit 300 for monitoring the status checked by the transmission MCU 250 through the transmission antenna 240. [ ) And a transmission control unit (260) for transmitting the hydraulic control signal to the hydraulic control unit.
The method of claim 2,
The transmission unit (200) is mounted on an Attachment of a heavy construction equipment, and is operated by a battery or a solar cell. The hydraulic cylinder system for a construction heavy equipment attachment according to claim 1, wherein the transmission unit (200)
The method according to claim 1,
The counting of the day counter 307 is initialized when the day counter operation is completed using the hydraulic cylinder 100 and the day counter reset switch 310 is operated. Hydraulic cylinder system for attachments.
The method according to claim 1,
The number of strokes of the cylinder rod 103 is determined by comparing the number of strokes stored in the memory of the receiving MCU 304 with the number of strokes stored in the memory of the receiving MCU 304. [ A hydraulic cylinder system for attachment of construction heavy equipment.

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