CN2783584Y

CN2783584Y - Switch device for tree branch crusher

Info

Publication number: CN2783584Y
Application number: CN 200520100999
Authority: CN
Inventors: 赵国泗
Original assignee: CIXI CITY BEST POWER TOOLS Co Ltd
Current assignee: CIXI CITY BEST POWER TOOLS Co Ltd
Priority date: 2005-03-16
Filing date: 2005-03-16
Publication date: 2006-05-24
Anticipated expiration: 2015-03-16

Abstract

The utility model relates to a switch device used for a branch cracker, which comprises a panel, and a starting switch and a stopping switch installed on the panel. The utility model is characterized in that the starting switch and the stopping switch are electromagnet switches with starting buttons and stopping buttons, and the panel is also provided with a turn knob which can positively and reversely rotate for exchange and a transfer switch which is linked by the turn knob and is positioned at the back of the panel. A shaft of the turn knob positioned at the back of the panel can be provided with a pressing plate which can be matched with an exchange button of the transfer switch to act. By using the structure, the switching state of each contact of the transfer switch can be altered by changing the rotary direction of the turn knob to control a motor finally and keep the utility model in a positive and reverse state. Meanwhile, because the starting switch and the stopping switch adopt the integral electromagnetic switches, a relay coil can be used for losing electricity to make the utility model in a manual state when the motor reversely rotates to realize the operating requirement of inching as required. Therefore, the utility model has the advantages of simple structure, convenient operation and high reliability and sensitivity and is worth applying generally to the existing branch cracker.

Description

A kind of switching device that is used on the chipper

Technical field

The utility model relates to a kind of switching device, especially refers to a kind of switching device that is used on the chipper.

Background technology

For action need, design has installing hole on existing chipper housing, disposes switching device on this installing hole, and this switching device generally includes panel and the forward and backward switch that is installed on the panel, startup, stop button and point driving switch.During use, operate corresponding button or switch respectively, can reach the forward and backward of motor and the purpose of moving point.Obviously, adopt the switching device of said structure, though can satisfy certain operation requirement, because its element is many, complex structure, and rotating is regulated sensitive inadequately when switching, also occur misoperation easily, therefore still have unsatisfactory part in the use, need await further improvement.

Summary of the invention

Technical problem to be solved in the utility model be provide at prior art a kind of regulate that sensitivity and when counter-rotating can only crawl be used for switching device on the chipper.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: this switching device that is used on the chipper comprises panel and the starting switch and the shutdown switch that are installed on the panel, it is characterized in that: described starting switch and shutdown switch are one to have the electromagnetic switch of start button, stop button, but and the knob that rotating switches also are installed on described panel and are subjected to this knob change over switch interlock, that be positioned at back side of panel.

Be positioned at the pressing plate that matches with switch bar on the above-mentioned change over switch can be installed on the rotation axis of described back side of panel, promptly this pressing plate is pushed the switch bar on the change over switch and is made it be in different on off operating modes along with the rotation of rotation axis, to realize the interlock between change over switch and the knob.

Described change over switch can be made up of two groups of single-pole double-throw switch (SPDT)s; Also can form by two groups of double-point double-throw switchs.

Compared with prior art, advantage of the present utility model is: can change the on-state of each contact of change over switch by changing the direction of rotation of knob, finally control motor and make it be in the forward and backward state.Because starting switch and shutdown switch adopt the electromagnetic switch that has startup, stop button of integral piece, therefore can utilize its relay coil dead electricity, and make it when motor reverses, can only be in manual state, simultaneously to realize the job requirement of crawl as required.Therefore the utility model is simple in structure, easy to operate, reliable and highly sensitive, is worth applying on existing chipper.

Description of drawings

Fig. 1 is the schematic perspective view of the utility model embodiment;

Fig. 2 looks schematic diagram for the back of the body of Fig. 1;

Fig. 3 is the fundamental diagram of the utility model embodiment.

Embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

As depicted in figs. 1 and 2, this switching device is positioned on the installing hole of chipper housing, it comprises and is embedded at the panel on the installing hole 1, is installed in the electromagnetic switch 7 on the panel 1 and is used for the knob 4 that motor positive and inverse switches, and at the back side of panel 1 change over switch 5 that links with knob 4 is installed also simultaneously.In the present embodiment, it is the switch of KJD17 that above-mentioned electromagnetic switch adopts model, and position right button thereon is as start button 2, and left button is as stop button 3.It is the switch of HY12 that change over switch 5 then adopts model, this change over switch comprises switch bar and the two groups of single-pole double-throw switch (SPDT)s that are pivoted at an upper portion thereof, by pushing switch bar, can change the on off operating mode of two groups of single-pole double-throw switch (SPDT)s, according to this principle, linking in the following manner between above-mentioned knob 4 and the change over switch 5: promptly be positioned on the rotation axis at panel 1 back side pressing plate 6 is installed, this pressing plate 6 is corresponding to the switch bar on the change over switch 5, when pressing plate 6 rotates along with rotation axis, can push this switch bar and change over switch 5 is under the different on off operating modes.

The connection principle of present embodiment when work as shown in Figure 3, two groups of normally-closed contacts of stop button 3 are passed through at the two poles of the earth of power supply respectively, form the first node A and the second node B behind two normally opened contacts of start button 2, wherein the first node A is connected in the normal-closed end 52 of first group of single-pole double-throw switch (SPDT) in the change over switch 5 respectively, the end of the end of the Chang Kaiduan 56 of second group of single-pole double-throw switch (SPDT) and motor main winding L2 and electromagnetic switch 7 repeat circuit coil L, the second node B then links to each other with the Chang Kaiduan 53 and normal-closed end 55 of second group of single-pole double-throw switch (SPDT) and the other end of motor main winding L2 of first group of single-pole double-throw switch (SPDT) in the change over switch 5, the other end of above-mentioned relay coil L links to each other by the end of capacitor C with motor auxiliary winding L1, and the other end of motor auxiliary winding L1 links to each other with the common port 51 of first group of single-pole double-throw switch (SPDT) in the change over switch 5, is connected in series the common port 54 that a little then is connected in second group of single-pole double-throw switch (SPDT) in the change over switch 5 between above-mentioned relay coil and the L capacitor C.

During the chipper operate as normal, knob 4 is threaded to the left side, driving pressing plate 6 this moment rotates, pressing plate 6 is pushed the switch bar of change over switch 5 again, make two groups of single-pole double-throw switch (SPDT)s in the change over switch 5 be in as shown in Figure 3 state, this moment, the started by press button 2, make its normally opened contact closure, be added in motor main winding and auxiliary winding two ends behind the normal-closed end of two groups of single-pole double-throw switch (SPDT)s, the common port in the normally opened contact of the normally-closed contact of supply voltage by stop button 3, start button 2 and the change over switch 5, make it begin just to change, to realize the work of normal broken branch.The also normal-closed end of second group of single-pole double-throw switch (SPDT), two ends that common port puts on relay coil in the normally opened contact of the normally-closed contact by stop button 3, start button 2 and the change over switch of supply voltage simultaneously, make start button be in the self-sustaining state, promptly both made and unclamped hand, 2 liang of groups of start button normally opened contact still is in closure state, to guarantee the chipper continuous operation.And need quit work the time, then only need push stop button 3, make entire circuit be in power failure state.And when chipper is worked, when if generation branch stuck phenomenon needs the motor counter-rotating, then only need knob 4 is threaded to the right, common port in the change over switch 5 is communicated with Chang Kaiduan, this moment relay coil L dead electricity, need with hand always behind the started by press button 2, just can make its normally opened contact closed and connect the power supply of motor.And in a single day hand leaves start button, then restores under the effect of start button self restoring force, and circuit disconnects, thus operation requirement that can only crawl when realizing the motor counter-rotating.

Claims

1, a kind of switching device that is used on the chipper, it comprises panel (1) and is installed in starting switch and shutdown switch on the panel, it is characterized in that: described starting switch and shutdown switch are one to have the electromagnetic switch (7) of start button (2), stop button (3), and at described panel (1) but on the knob (4) that rotating switches also is installed and is subjected to this knob change over switch (5) that link, that be positioned at back side of panel.

2, the switching device that is used on the chipper according to claim 1 is characterized in that: be positioned at the pressing plate (6) that the action that matches with switch bar on the above-mentioned change over switch (5) is installed on the rotation axis at described panel (1) back side.

3, the switching device that is used on the chipper according to claim 1 and 2 is characterized in that: described change over switch (5) has two groups of single-pole double-throw switch (SPDT)s.