CN104074342B - A kind of overload protection arrangement - Google Patents
A kind of overload protection arrangement Download PDFInfo
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- CN104074342B CN104074342B CN201410344764.2A CN201410344764A CN104074342B CN 104074342 B CN104074342 B CN 104074342B CN 201410344764 A CN201410344764 A CN 201410344764A CN 104074342 B CN104074342 B CN 104074342B
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- windlass
- limit switch
- plastering machine
- overload protection
- pulley
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Abstract
The present invention discloses a kind of overload protection arrangement, comprises windlass and plastering machine, and plastering machine is carried out transmission by wireline by windlass; Also comprise the pulley frame that a relative windlass place frame is swingable; Described pulley frame is provided with the pulley for changing described lineoutofservice signal pull direction; Pulley frame is also provided with the first touching face and the 2nd touching face; The contraposition of first touching face institute has installed thrust device; 2nd touching face is connected with pulling force device; Also comprise and can control the first limit switch and the 2nd limit switch that windlass shuts down; First limit switch is placed in the first side, touching face, and the 2nd limit switch is placed in the 2nd touching side, face. Overload protection arrangement disclosed by the invention, structure is simple, and no matter plastering machine runs into card machine situation in process of rising or falling, can start in time, windlass is shut down, thus effectively protect machine.
Description
Technical field
The present invention relates to the overload protection arrangement of plastering machine, especially a kind of overload protection arrangement.
Background technology
Manually spread sand-cement slurry on body of wall has the advantages such as efficiency height, time saving and energy saving less manpower to plastering machine replacement.
At present, the plastering machine of construction usage is provided with one group of upright track, and such one group of upright track track normally parallel to each other by 2 and vertical setting is formed, be called left track and right track. Head of plastering a wall does up-and-down movement along upright track, thus realizes plastering and calendering function from top to bottom from bottom to top.
In existing plastering machine, it is connected with windlass by wireline as plastering machine is first, it is achieved head of plastering a wall makes the function of up-and-down movement along upright track. As Authorization Notice No. be CN2531027Y patent document disclosed in a kind of plastering machine, it is made up of track, windlass, plastering machine three part, and track is made up of upper and lower traverse rod and vertical rail; Windlass is connected by wireline and plastering machine; Plastering machine fuselage is equipped with defeated mud band, deposits mud plate, mud throwing, trowel. Use when this kind of plastering machine is suitable for plastering a wall surface construction, it is possible to improve work efficiency, alleviate labour intensity.
If the surface of wall unfairness that powder is smeared, plastering machine, in lifting process, is smeared plate and may be touched the projection on body of wall and cannot follow plastering machine and continue to do up-and-down movement. Now, if plastering machine still keeps rising or decline, the load of plastering machine can increase fast, it is possible to can meet with and scrape projection by force and damage body of wall or smear the situation that plate fractures because smearing plate. In order to avoid that above-mentioned two situations occur, plastering machine is generally also provided with load protector. This kind of load protector is made up of current detecting device and power cutoff mechanism. When there is any one of above-mentioned two situations, the load of plastering machine all can increase fast, and now, the electric current of plastering machine also can increase. When current detecting device detects that the electric current of plastering machine exceedes set(ting)value, power cutoff mechanism will start, and cut off the power supply of plastering machine, make head forfeiture power of plastering a wall, thus plate and body of wall are smeared in protection.
But, detecting that the working current of plastering machine exceeds set(ting)value from current detecting device, cut off the power supply of plastering machine to power cutoff mechanism, this process needs the regular hour, cannot respond in time. During this section, head of plastering a wall still can keep rising or decline, smears plate and still can be squeezed and be fractureed. And, this kind of load protector only can detect out smears the situation that in plate uphill process, plastering machine load increases, and smears the situation that in plate decline process, plastering machine load increases and cannot detect.
For this reason, it is necessary to a kind of new load protector.
Summary of the invention
It is an object of the invention to provide a kind of when smearing plate and run into obstruction in process of rising or falling, can respond in time thus protect the overload protection arrangement of machine.
In order to realize above-mentioned purpose, the present invention adopts following technical scheme:
A kind of overload protection arrangement, comprises windlass and plastering machine, and plastering machine is carried out transmission by wireline by windlass; Also comprise the pulley frame that a relative windlass place frame is swingable; Described pulley frame is provided with the pulley for changing described lineoutofservice signal pull direction; Pulley frame is also provided with the first touching face and the 2nd touching face; The contraposition of first touching face institute has installed thrust device; 2nd touching face is connected with pulling force device; Also comprise and can control the first limit switch and the 2nd limit switch that windlass shuts down; First limit switch is placed in the first side, touching face, and the 2nd limit switch is placed in the 2nd touching side, face.
The principle of work of the present invention is as follows:
1) when head of plastering a wall is parked in the most end and windlass does not start: under the effect of pulling force device, pulley frame is parked in the position of lower 2nd limit switch of pressure.
2) in normal rope traction plastering machine uphill process: pulley frame can be produced a relatively stable side direction thrust by the pulling force of the wireline being changed direction, and this side direction thrust is towards the first limit switch, and is greater than the pulling force of pulling force device. Due to the startup power that can not overcome thrust device with joint efforts of side direction thrust and pulling force device pulling force, so pulley frame will be pressed on thrust device, it is between the first limit switch and the 2nd limit switch, but can not deflect to the position pressing the first limit switch.
3), when running into card machine in rope traction plastering machine uphill process: as the projection on body of wall causes machine stuck, plastering machine cannot continue to rise. Now, the pulling force of wireline can increase instantaneously, and described side direction thrust also can increase thereupon. When side direction thrust overcomes the startup power of the pulling force of pulling force device and thrust device; pulley frame will deflect and press the first limit switch; now the first limit switch will directly cut off the power supply of windlass; or the signal making windlass stop rotation being exported as signal generation apparatus; force windlass stopping work, thus realize protecting the object of windlass with head of plastering a wall.
4) in normal rope traction plastering machine decline process: pulley frame can be produced a relatively stable side direction thrust by the pulling force of the wireline being changed direction equally, and this side direction thrust is towards the first limit switch, and is greater than the pulling force of pulling force device. Due to the startup power that can not overcome thrust device with joint efforts of side direction thrust and pulling force device pulling force, so pulley frame will be pressed on thrust device, it is between the first limit switch and the 2nd limit switch, but can not deflect to the position pressing the first limit switch.
5), when running into card machine in rope traction plastering machine decline process: when plastering machine cannot continue decline, now, owing to windlass still keeps running, wireline will become lax, and side direction thrust before this will disappear. Pulley frame will deflect and press the 2nd limit switch to pulling force device direction under the effect of pulling force device. Now the 2nd limit switch will directly cut off the power supply of windlass, or export the signal making windlass stop rotation as signal generation apparatus, forces windlass stopping work, thus realizes protecting the object of windlass with head of plastering a wall.
It should be noted that windlass is rotating type, it is provided with the contactor of two interlockings, the rising action of the corresponding head of plastering a wall of the rotating of windlass and decline action. First limit switch is for the stopping of the head rising action that controls to plaster a wall, and the 2nd limit switch is for the stopping of the head decline action that controls to plaster a wall.
In addition, head of plastering a wall declines again after being raised to top, period windlass can need experience a stopping process, but this stopping process wireline is the weight that still subject head of plastering a wall, so in this stopping process, pulley frame keeps being between the first limit switch and the 2nd limit switch, and can not press the first limit switch or the 2nd limit switch.
As known from the above, the startup power of thrust device determines the startup opportunity of overload protection function. And once after starting, the thrust of thrust device is preferably a constant force, but not the thrust of cylinder, common spring one class can with the device of distortion state change. Preferred scheme is, thrust device is gas spring or other is for providing the mechanism of constant force.
Due to plastering machine run into card machine situation time, smearing plate and can bear bigger load on plastering machine. Overload protection arrangement can startup in time can determine machine can be intact. For this reason, it is preferred that the first limit switch and the 2nd limit switch are microswitch type travel switches.
When plastering machine runs into card machine situation in decline process, pulling force device can draw in time movable pulley rack move toward the 2nd limit switch determine machine can be intact. For this reason, it is preferred that pulling force device selects extension spring.
Overload protection arrangement disclosed by the invention, structure is simple, and no matter plastering machine runs into card machine situation in process of rising or falling, can start in time, windlass is shut down, thus effectively protect machine.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of plastering machine structure in the embodiment of the present invention 1;
Fig. 2 is the partial enlargement figure of A in Fig. 1;
Plastering machine structural representation when Fig. 3 is that in the embodiment of the present invention 1, windlass does not start;
Fig. 4 is the partial enlargement figure of A in Fig. 3;
Schematic diagram when Fig. 5 is that in the embodiment of the present invention 1, first travel switch works;
Schematic diagram when Fig. 6 is that in the embodiment of the present invention 1, the 2nd travel switch works;
Fig. 7 is the schematic diagram of plastering machine mechanism in the embodiment of the present invention 2;
Fig. 8 is the schematic diagram of overload protection arrangement in the embodiment of the present invention 2.
Description of reference numerals: 1-windlass; 2-plastering machine; 3-wireline; 4-pulley frame; 5-pulley; 6-first touches face; 7-the 2nd touches face; 8-gas spring; 9-first travel switch; 10-the 2nd travel switch; 11-extension spring; 12-back up pad; 13-bearing pin; 14-windlass frame
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
Embodiment 1:
Overload protection arrangement as shown in Figure 1, 2, comprises windlass 1 and plastering machine 2. Plastering machine 2 is carried out transmission by wireline 3 by windlass 1. Overload protection arrangement is arranged in windlass frame 14. Windlass 1 is rotating type, and it is provided with the contactor of two interlockings. The rising action of the corresponding plastering machine 2 of the rotating of windlass 1 and decline action.
Pulley frame 4 is hinged in windlass frame 14 by bearing pin 13, can relatively windlass frame about 14 swing.
Pulley frame 4 is provided with the first touching face 6 and the 2nd touching face 7. The side in the first touching face 6 is provided with gas spring 8 and the first travel switch 9; The side being connected with extension spring the 11, two touching face 7 on 2nd touching face 7 is also provided with the 2nd travel switch 10. Gas spring 8 and extension spring 11 are installed in windlass frame 14, and the first travel switch 9 and the 2nd travel switch 10 electrically connect with windlass 1. First travel switch 9 is for controlling the stopping of plastering machine 2 rising action, and the 2nd travel switch 10 is for controlling the stopping of plastering machine 2 decline action. In the present embodiment 1, the first travel switch 9 and the 2nd travel switch 10 are all microswitch type travel switches.
Pulley frame 4 is also installed pulley 5. Pulley 5 is pressed on wireline 3 by extension spring 11. Now, pulley 5 can be caused a relatively stable side force by the pulling force of wireline 3.
As shown in Figure 3,4, when plastering machine 2 is parked in the most end and windlass 1 does not start, under the effect of extension spring 11, pulley frame 4 is pressed on the 2nd travel switch 10.
For uphill process:
In normal operation, wireline 3 draws plastering machine 2 and rises, and pulley 5 can be produced a relatively stable side direction thrust by the pulling force of the wireline 3 being changed direction, and this side direction thrust is equal to or greater than the pulling force of extension spring 11. In the pulling force situation that the side direction thrust of wireline 3 equals extension spring 11, pulley frame 4 can not keep, and the relative position of pulley 5 and wireline 3 is constant; In the pulling force situation that the side direction thrust of wireline 3 is greater than extension spring 11, pulley frame 4 has the trend to the deflection of gas spring 8 direction, but now, side direction thrust that wireline 3 produces and the difference of the pulling force of extension spring 11 are still less than the startup power of gas spring 8, pulley frame 4 can not deflect to the position pressing the first travel switch 9, and plastering machine 2 keeps normal rising.
When the unexpected situation of appearance, as the projection on body of wall causes machine stuck, plastering machine 2 cannot continue to rise, and now, as shown in Figure 5, the pulling force of wireline 3 can increase instantaneously, and its side force also can increase thereupon. When side force is greater than the startup power sum of the gentle spring 8 of pulling force that extension spring 11 provides, pulley frame 4 is connected pulley 5 and deflects and press the first travel switch 9, and windlass 1 is shut down, thus realizes protecting the object of windlass with head of plastering a wall.
For decline process:
In normal operation, wireline 3 draws plastering machine 2 and declines, and pulley 5 can be produced a relatively stable side direction thrust by the pulling force of the wireline 3 being changed direction equally, and this side direction thrust is equal to or greater than the pulling force of extension spring 11 equally. In the pulling force situation that the side direction thrust of wireline 3 equals extension spring 11, pulley frame 4 can not keep, and the relative position of pulley 5 and wireline 3 is constant; In the pulling force situation that the side direction thrust of wireline 3 is greater than extension spring 11, pulley frame 4 has the trend to the deflection of gas spring 8 direction, but now, side direction thrust that wireline 3 produces and the difference of the pulling force of extension spring 11 are still less than the startup power of gas spring 8, pulley frame 4 can not deflect to the position pressing the first travel switch 9, and plastering machine 2 keeps normal rising.
And when the projection on body of wall causes machine stuck, when plastering machine 2 cannot continue decline, now, as shown in Figure 6, owing to windlass 1 still keeps running, wireline 3 is lax by becoming makes wireline 3 the side direction thrust of pulley frame 4 be disappeared, wireline 3 and pulley 5 depart from. The direction that pulley frame 4 is connected pulley 5 meeting past extension spring 11 under the effect of extension spring 11 deflects and presses the 2nd travel switch 10; now the 2nd travel switch 10 will directly cut off the power supply of windlass 1; or the signal making windlass 1 stop rotation being exported as signal generation apparatus; force windlass 1 to stop work, thus realize protecting the object of windlass with head of plastering a wall.
In actual use, the action that plastering machine declines again after constantly repeating to rise to top, period windlass can need experience a stopping process, but this stopping process wireline is the weight that still subject plastering machine, so in this stopping process, pulley frame keeps being between the first limit switch and the 2nd limit switch, and can not press the first travel switch or the 2nd travel switch.
Embodiment 2:
The structure of the overload protection arrangement of the present embodiment 2 is identical with embodiment 1, and the present embodiment 2 is with the difference of embodiment 1, and as shown in Figure 7,8, windlass 1 is directly fixedly connected with plastering machine 2, and wireline is relative with portalframe top fixing. Now, overload protection arrangement is directly installed on plastering machine 2.
Extension supporting plate 12 in the frame of plastering machine 2, extension spring 11 is connected in back up pad 12. Pulley frame 4 is hinged in the frame of plastering machine 2 by bearing pin 13, can relatively swing by plastering machine 2.
Along with rising or the decline of plastering machine 2, overload protection arrangement is all followed plastering machine 2 and is moved, and the relative position of pulley 5 and wireline 3 remains unchanged. When the unexpected situation of appearance, as the projection on body of wall causes machine stuck, plastering machine 2 cannot continue to rise or decline, and now, overload protection arrangement action, its action process is consistent with embodiment 1, and windlass 1 shuts down, it is achieved the function of protection machine.
Overload protection arrangement disclosed by the invention, structure is simple, and no matter plastering machine runs into card machine situation in process of rising or falling, can start in time, windlass is shut down, thus effectively protect machine.
Above-listed detailed explanation is the concrete explanation for the feasible embodiment of the present invention, this embodiment and be not used to limit the present invention patent scope, every do not depart from done by the present invention equivalence enforcement or change, all should be included within the scope of patent right of the present invention.
Claims (4)
1. an overload protection arrangement, comprises windlass and plastering machine, and plastering machine is carried out transmission by wireline by windlass, it is characterized in that: also comprise the pulley frame that a relative windlass place frame is swingable; Described pulley frame is provided with the pulley for changing described lineoutofservice signal pull direction; Described pulley frame is also provided with the first touching face and the 2nd touching face; The contraposition of first touching face institute has installed thrust device; 2nd touching face is connected with pulling force device; Also comprise and can control the first limit switch and the 2nd limit switch that windlass shuts down; Described first limit switch is placed in the first side, touching face, and described 2nd limit switch is placed in the 2nd touching side, face.
2. a kind of overload protection arrangement according to claim 1, is characterized in that: described thrust device is gas spring or other is for providing the mechanism of constant force.
3. a kind of overload protection arrangement according to claim 1, is characterized in that: described first limit switch and the 2nd limit switch are microswitch type travel switches.
4. a kind of overload protection arrangement according to claim 1, is characterized in that: described pulling force device is extension spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410344764.2A CN104074342B (en) | 2014-07-18 | 2014-07-18 | A kind of overload protection arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410344764.2A CN104074342B (en) | 2014-07-18 | 2014-07-18 | A kind of overload protection arrangement |
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| Publication Number | Publication Date |
|---|---|
| CN104074342A CN104074342A (en) | 2014-10-01 |
| CN104074342B true CN104074342B (en) | 2016-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410344764.2A Expired - Fee Related CN104074342B (en) | 2014-07-18 | 2014-07-18 | A kind of overload protection arrangement |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5368429A (en) * | 1991-04-29 | 1994-11-29 | Young; Roland O. | Panel lifting apparatus |
| CN2506728Y (en) * | 2001-10-18 | 2002-08-21 | 商其山 | Automatic plastering machine |
| CN200949309Y (en) * | 2006-09-19 | 2007-09-19 | 杨云山 | Wall plastering machine base device |
| CN202214965U (en) * | 2011-07-18 | 2012-05-09 | 黄仕安 | Complete electric mechanical whitewashing equipment |
| CN203640243U (en) * | 2013-12-16 | 2014-06-11 | 邱忠 | Automatic wall whitewashing and flattening machine |
| CN204040418U (en) * | 2014-07-18 | 2014-12-24 | 王建虎 | A kind of overload protection arrangement |
-
2014
- 2014-07-18 CN CN201410344764.2A patent/CN104074342B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5368429A (en) * | 1991-04-29 | 1994-11-29 | Young; Roland O. | Panel lifting apparatus |
| CN2506728Y (en) * | 2001-10-18 | 2002-08-21 | 商其山 | Automatic plastering machine |
| CN200949309Y (en) * | 2006-09-19 | 2007-09-19 | 杨云山 | Wall plastering machine base device |
| CN202214965U (en) * | 2011-07-18 | 2012-05-09 | 黄仕安 | Complete electric mechanical whitewashing equipment |
| CN203640243U (en) * | 2013-12-16 | 2014-06-11 | 邱忠 | Automatic wall whitewashing and flattening machine |
| CN204040418U (en) * | 2014-07-18 | 2014-12-24 | 王建虎 | A kind of overload protection arrangement |
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| Publication number | Publication date |
|---|---|
| CN104074342A (en) | 2014-10-01 |
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Effective date of registration: 20151120 Address after: 528200, Shengli South Road, Nanhai Industrial Zone, Nanhai District, Guangdong, Foshan Applicant after: FOSHAN TUPO MACHINERY MANUFACTURING CO., LTD. Address before: 528200 breakthrough machinery company, Shengli South Road, Ping Industrial Park, Nanhai District, Foshan, Guangdong 1, China Applicant before: Wang Jianhu |
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Granted publication date: 20160601 Termination date: 20190718 |
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