CN201062188Y - Zero-position protection device for full-hydraulic tower crane - Google Patents
Zero-position protection device for full-hydraulic tower crane Download PDFInfo
- Publication number
- CN201062188Y CN201062188Y CNU2007200402359U CN200720040235U CN201062188Y CN 201062188 Y CN201062188 Y CN 201062188Y CN U2007200402359 U CNU2007200402359 U CN U2007200402359U CN 200720040235 U CN200720040235 U CN 200720040235U CN 201062188 Y CN201062188 Y CN 201062188Y
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- handle
- tower crane
- switch
- travel switch
- utility
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- Expired - Lifetime
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Abstract
The utility model discloses a zero position protecting device for an entire hydraulic pressure tower type crane. The utility model comprises a limit switch K1 (1), a limit switch K2 (2), a limit switch K3 (3), a limit switch K4 (4), a limit switch K5 (5), a limit switch K6 (6), a bumping block (7) installed on the handle of the lifting mechanism, a derricking gear, an operating handle (8), a lifting mechanism operating handle (9). The operation of the utility model is simple, convenient, secure, and reliable, and in particular the utility model is suitable for the entire hydraulic pressure tower crane to be used.
Description
Technical field
The utility model relates to a kind of safety guard of tower crane.
Background technology
In building construction process, tower crane plays important effect.Along with the increase of tower crane Occupation coefficient, the tower crane accidents incidence is also in rising trend, and for the effectively generation of choke suppress accident, it is one of effective means that tower crane is increased the necessary security device.
Summary of the invention
The purpose of this utility model is to provide a kind of zero position protection device of a kind of all-hydraulic tower crane of simple, reliable, convenient, safe zero position protection effect.
Technical solution of the present utility model is:
What all-hydraulic tower crane was different with other tower crane is, its operating handle is the oil circuit of control, and it can not be directly works to the control circuit of motor.The zero position protection device of all-hydraulic tower crane is by several travel switches, forms with the collision block of pressing dress on the operating handle to be connected.
The utility model is simple, reliable, convenient, safety, is specially adapted to the use of all-hydraulic tower crane.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is the scheme drawing of lifting mechanism operating handle assembling of the present utility model.
Fig. 2 is the scheme drawing of luffing mechanism operating handle assembling of the present utility model.
Fig. 3 is the scheme drawing of swing type mechanism operating handle assembling of the present utility model.
Fig. 4 is the control part of schematic circuit diagram of the present utility model.
The specific embodiment
A kind of zero position protection device of all-hydraulic tower crane comprises: travel switch K1 (1); travel switch K2 (2); travel switch K3 (3); travel switch K4 (4); travel switch K5 (5), travel switch K6 (6) is installed in the collision block (7) on the lifting mechanism handle; luffing mechanism, revolution operating handle (8), lifting mechanism operating handle (9).
Manual proportional reversing valve one side of lifting mechanism is installed a travel switch K1 (1) (as Fig. 1), plays zero position protection (another effect is to open oil to stop) and is referred to as neutral K switch o; Travel switch K2 (2) is that suspension hook continues to rise when preventing overweight, superelevation, super moment, is referred to as gib head direction identification switch.
The manual proportional reversing valve of luffing mechanism is installed travel switch 3 (3), travel switch 4 (4) (as Fig. 2), and the handle front side is a dolly K switch 3 forward, and rear side is a dolly K switch 4 backward.
The manual proportional reversing valve of swing type mechanism is installed travel switch 5 (5), travel switch 6 (6) (as Fig. 3), and the left side is a revolution anticlockwise K switch 5, and the right side is 6 (left and right sides all refers to handle) of revolution right rotation K switch.
By the control (circuit diagram such as Fig. 4) mechanical, electrical, that the liquid interlock is realized both forward and reverse directions: the exercises of suspension hook all are to control by manual proportional reversing valve.Now by manual valve handle impact stroke switch, control the propulsion source electrical motor and realize various controls by capable the closing of stroke.Now sketch each control action process:
The identification switch neutrality switch of neutral switch that cooperates with the manual apportioning valve of lifting mechanism machinery and gib head direction have only when handle (9) when placing zero-bit stroke switch 1 be state of nature (as the neutral normally off of Fig. 4).Press start button S1, the master hangs contactless switch 1C coil and could get, otherwise when handle (9) during not in zero-bit, the last collision block (7) of handle (9) rushes open travel switch K1 (1) disconnects its normally closed contact, the master hangs motor and can not start, have only travel switch K1 (1) to be in collision block (7) circular arc place like this, promptly handle (9) could start when being in zero-bit.Play the zero position protection effect.Because the 1C contactless switch gets electric its auxiliary open contact C1 adhesive self-locking.Main motor M 1 normal operation that hangs, handle (9) forward or the back pulling, suspension hook descends or rises.As handle (9) also impact stroke switch K2 impact stroke switch k1 time the when pulling back, promptly gib head direction identification switch is depressed, and normally closed contact disconnects.Primary current is maintained the 1C coil through the normally closed contact of superelevation Kg, overweight Kz, super moment Kj and C1 and gets.When wherein action of superelevation Kg, overweight Kz, super moment Kj, then the C1 dead electricity is led and is hung the motor stall.Can not normally start by start button S1 this moment, and by changing into backward forward, the startup master hangs motor and puts down suspension hook simultaneously with handle (9).Electric current is rotated by superelevation Kg, overweight Kz, super moment Kj (the action back is normally closed to become disconnection, often opens to become adhesive) open contact → gib head direction normally closed contact (handle (9) makes travel switch 2 (2) reset forward) → C1 coil adhesive motor.After superelevation Kg, overweight Kz, super moment Kj reset, restart motor with normal operation, this design meets the requirement of 4.7 perchs among the GB/T9462-99.
The control of luffing mechanism is identical with the control principle of swing type mechanism, and (to preceding switch Cheng KaiguanK 3 (3) at once, dolly switch 4 (4) is backward installed in handle (8) back at preceding installation one dolly of handle (8) only to tell about the control of luffing mechanism here.Handle (8) dolly backward moves backward).The normal circumstances electric current is pressed start button S2 as shown in Figure 4, and the C2 coil gets electric, by each spacing normally closed energy self-locking, M2 is rotated by the C2 secondary contact.When the action of dolly front limit, its normally closed contact disconnects, the open contact adhesive.Handle (8) pull back dolly backward switch adhesive C2 get electricly, dolly moves backward, restarts S2 after limit switch resets, and recovers normal operation.The principle of work of super moment is also same as described above, no longer repeats here.
Claims (2)
1. the zero position protection device of an all-hydraulic tower crane; it is characterized in that comprising: travel switch K1 (1); travel switch K2 (2), travel switch K3 (3), travel switch K4 (4); travel switch K5 (5); travel switch K6 (6) is installed in the collision block (7) on the lifting mechanism operating handle, luffing mechanism, revolution operating handle (8); lifting mechanism operating handle (9), travel switch (1), (2), (3), (4), (5), (6) directly are connected with handle (8), handle (9).
2. the zero position protection device of all-hydraulic tower crane according to claim 1, it is characterized in that comprising: collision block (7) is installed on the hoist mechanism operating handle (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200402359U CN201062188Y (en) | 2007-07-04 | 2007-07-04 | Zero-position protection device for full-hydraulic tower crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200402359U CN201062188Y (en) | 2007-07-04 | 2007-07-04 | Zero-position protection device for full-hydraulic tower crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201062188Y true CN201062188Y (en) | 2008-05-21 |
Family
ID=39450557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200402359U Expired - Lifetime CN201062188Y (en) | 2007-07-04 | 2007-07-04 | Zero-position protection device for full-hydraulic tower crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201062188Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108803474A (en) * | 2018-06-14 | 2018-11-13 | 武汉船用机械有限责任公司 | A kind of portable electric gunnel remote control and its control method |
-
2007
- 2007-07-04 CN CNU2007200402359U patent/CN201062188Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108803474A (en) * | 2018-06-14 | 2018-11-13 | 武汉船用机械有限责任公司 | A kind of portable electric gunnel remote control and its control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080521 |
|
| CX01 | Expiry of patent term |