CN215974707U - Upper limiting device for elevation angle of boom of movable arm tower crane - Google Patents
Upper limiting device for elevation angle of boom of movable arm tower crane Download PDFInfo
- Publication number
- CN215974707U CN215974707U CN202122311864.3U CN202122311864U CN215974707U CN 215974707 U CN215974707 U CN 215974707U CN 202122311864 U CN202122311864 U CN 202122311864U CN 215974707 U CN215974707 U CN 215974707U
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- guide rod
- tilting frame
- frame guide
- tower crane
- stroke
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Abstract
The utility model discloses a boom angle upper limit device of a movable arm tower crane, which comprises an anti-tilting frame guide rod connecting rod, wherein an anti-tilting frame guide rod is movably inserted into one end of the anti-tilting frame guide rod connecting rod, the anti-tilting frame guide rod is connected with a stroke guide rod through a connecting pin, a stroke switch is arranged on one side of the stroke guide rod and on the side wall of the anti-tilting frame guide rod connecting rod, and one end of the anti-tilting frame guide rod connecting rod is connected with an anti-tilting frame. This stop device on luffing jib tower crane davit angle of elevation depends on current structure, need not carry out a large amount of structure transformation, is applicable to most luffing jib tower crane and uses to this device preparation simple to operate, it is easy to obtain the signal, does not need complicated debugging, only need set for in advance the biggest warning angle of elevation position of davit and corresponding travel switch position can, very practical improves the safety in utilization of tower machine.
Description
Technical Field
The utility model belongs to the technical field of a luffing jib tower crane, and particularly relates to an elevation upper limiting device for a jib of the luffing jib tower crane.
Background
The movable arm tower crane is easy to have backward tilting accidents in the amplitude variation process. In conventional designs, a luffing tower crane is provided with an anti-back-tipping device, i.e. an anti-tipping frame. Usually, after the suspension arm reaches a certain angle, the suspension arm is contacted with the anti-tilting frame guide rod, so that the suspension arm cannot continue to perform elevation amplitude variation, and the purpose of mechanical limiting is achieved. However, in the normal use process, due to negligence of tower crane operators and the quality of personnel, whether the suspension arm is in contact with the anti-tilting frame guide rod or not can not be noticed timely, and the suspension arm amplitude-variable operation is continuously executed after the suspension arm is in contact with the anti-tilting frame guide rod. Therefore, the tower crane structure is easy to impact and damage, and potential safety hazards are brought to the use of the tower crane.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an upper limiting device for the elevation angle of a boom of a luffing jib tower crane, so as to solve the problems in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme: the upper limit device for the boom elevation angle of the movable arm tower crane comprises an anti-tilting frame guide rod connecting rod, wherein an anti-tilting frame guide rod is movably inserted into one end of the anti-tilting frame guide rod connecting rod, the anti-tilting frame guide rod is connected with a stroke guide rod through a connecting pin, a stroke switch is arranged on one side of the stroke guide rod and on the side wall of the anti-tilting frame guide rod connecting rod, and one end of the anti-tilting frame guide rod connecting rod is connected with an anti-tilting frame.
Preferably, a travel switch bracket is installed on the anti-tilting frame guide rod and on one side close to the suspension arm, and the travel switch is installed on the travel switch bracket.
Preferably, the side wall of the anti-roll frame guide rod connecting rod is symmetrically provided with movable openings, the connecting pin penetrates through the movable openings and the anti-roll frame guide rod, and one end of the connecting pin extends to the outer side of the movable openings and is connected with one end of the stroke guide rod.
Preferably, a stroke guide rod bracket is installed on a side wall of the anti-roll stand guide rod connecting rod, and the stroke guide rod penetrates through the stroke guide rod bracket in a sliding manner.
The utility model has the technical effects and advantages that: this stop device on luffing jib tower crane davit angle of elevation depends on current structure, need not carry out a large amount of structure transformation, is applicable to most luffing jib tower crane and uses to this device preparation simple to operate, it is easy to obtain the signal, does not need complicated debugging, only need set for in advance the biggest warning angle of elevation position of davit and corresponding travel switch position can, very practical improves the safety in utilization of tower machine.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic side view of the present invention;
fig. 3 is a schematic structural diagram of the use state of the present invention.
In the figure: 1. an anti-tipping frame; 2. a stroke guide rod bracket; 3. a stroke guide rod; 4. a connecting pin; 5. an anti-roll stand guide rod; 6. a suspension arm; 7. a travel switch bracket; 8. a travel switch; 9. the anti-roll rack guide rod connecting rod.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The utility model provides a boom elevation upper limit device of a movable arm tower crane as shown in figures 1-3, which comprises an anti-tilting frame guide rod connecting rod 9, wherein one end of the anti-tilting frame guide rod connecting rod 9 is movably inserted with an anti-tilting frame guide rod 5, the anti-tilting frame guide rod 5 is connected with a stroke guide rod 3 through a connecting pin 4, the side wall of the anti-tilting frame guide rod connecting rod 9 is symmetrically provided with movable openings, the connecting pin 4 penetrates through the movable openings and the anti-tilting frame guide rod 5, one end of the connecting pin 4 extends to the outer side of the movable openings and is connected with one end of the stroke guide rod 3, and the length of the movable openings is the movable range of the anti-tilting frame guide rod 5; stroke guide rod support 2 is installed to the lateral wall of anti-roll stand guide rod connecting rod 9, stroke guide rod 3 slides and passes stroke guide rod support 2, stroke guide rod support 2 is used for injecing stroke guide rod 3 and can only be moving along the flexible direction of anti-roll stand guide rod 5, one side of stroke guide rod 3 just is located and is equipped with travel switch 8 on the lateral wall of anti-roll stand guide rod connecting rod 9, on the anti-roll stand guide rod 5 and be close to one side installation travel switch support 7 of davit 6, travel switch 8 installs on travel switch support 7. One end of the anti-tilting frame guide rod connecting rod 9 is connected with the anti-tilting frame 1, and one end of the anti-tilting frame guide rod 5 is provided with a suspension arm 6.
In the using process of the boom angle upper limiting device of the movable arm tower crane, as shown in fig. 3, after the boom 6 is contacted with the anti-tilting frame guide rod 5, the boom 6 starts to compress the anti-tilting frame guide rod 5, the anti-tilting frame guide rod 5 drives the stroke guide rod 3 to move, and after the boom moves to a certain position, the stroke guide rod 3 is contacted with the stroke switch 8 to trigger an alarm signal. At the moment, a tower crane driver can know that the suspension arm 6 is up to the set limit angle after receiving the alarm signal, and timely reduce the amplitude variation speed or stop the amplitude variation operation, thereby avoiding safety accidents.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (4)
1. The utility model provides a stop device on luffing jib tower crane davit elevation angle, includes and prevents inclining frame guide arm connecting rod (9), its characterized in that: the anti-tilting frame is characterized in that an anti-tilting frame guide rod (5) is movably inserted into one end of an anti-tilting frame guide rod connecting rod (9), the anti-tilting frame guide rod (5) is connected with a stroke guide rod (3) through a connecting pin (4), a stroke switch (8) is arranged on one side of the stroke guide rod (3) and located on the side wall of the anti-tilting frame guide rod connecting rod (9), and one end of the anti-tilting frame guide rod connecting rod (9) is connected with the anti-tilting frame (1).
2. The boom upper limit device of the luffing jib tower crane according to claim 1, wherein: and a travel switch bracket (7) is arranged on one side of the anti-tilting frame guide rod (5) close to the suspension arm (6), and a travel switch (8) is arranged on the travel switch bracket (7).
3. The boom upper limit device of the luffing jib tower crane according to claim 1, wherein: the anti-tilting frame guide rod connecting rod is characterized in that movable openings are symmetrically formed in the side wall of the anti-tilting frame guide rod connecting rod (9), the connecting pin (4) penetrates through the movable openings and the anti-tilting frame guide rod (5), and one end of the connecting pin (4) extends to the outer side of the movable openings and is connected with one end of the stroke guide rod (3).
4. The boom upper limit device of the luffing jib tower crane according to claim 1, wherein: the side wall of the anti-tilting frame guide rod connecting rod (9) is provided with a stroke guide rod bracket (2), and the stroke guide rod (3) penetrates through the stroke guide rod bracket (2) in a sliding manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122311864.3U CN215974707U (en) | 2021-09-24 | 2021-09-24 | Upper limiting device for elevation angle of boom of movable arm tower crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122311864.3U CN215974707U (en) | 2021-09-24 | 2021-09-24 | Upper limiting device for elevation angle of boom of movable arm tower crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215974707U true CN215974707U (en) | 2022-03-08 |
Family
ID=80570746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122311864.3U Active CN215974707U (en) | 2021-09-24 | 2021-09-24 | Upper limiting device for elevation angle of boom of movable arm tower crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215974707U (en) |
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2021
- 2021-09-24 CN CN202122311864.3U patent/CN215974707U/en active Active
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