CN211733699U - Upper and lower limit control device of marine crane - Google Patents
Upper and lower limit control device of marine crane Download PDFInfo
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- CN211733699U CN211733699U CN201922371915.4U CN201922371915U CN211733699U CN 211733699 U CN211733699 U CN 211733699U CN 201922371915 U CN201922371915 U CN 201922371915U CN 211733699 U CN211733699 U CN 211733699U
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Abstract
The utility model belongs to the technical field of ship mechanical equipment, and relates to an upper and lower limit control device of a ship crane, which comprises a shell, wherein a speed reducer is arranged at one axial end of the shell, an output shaft of the speed reducer is connected with a camshaft, and the other end of the camshaft is rotatably supported on an end cover connected with the end surface of the shell; the lower limiting cam and the upper limiting cam are mounted on the cam shaft and spaced through spacing rings, and the lower limiting cam and the upper limiting cam are connected with the spacing rings through bolts. The utility model adopts closed transmission, the external environment has little influence on the transmission, the maintenance-free use can be realized, and the service life is longer; in addition, the structure is simple, the shape is small, the appearance degree is good, the installation and the maintenance are convenient, the upper limit position and the lower limit position of the crane can be quickly adjusted, the safety and the reliability are effectively improved, and the damage to equipment caused by excessive rope releasing and rope winding of the winch is avoided.
Description
Technical Field
The utility model belongs to the technical field of marine machinery equipment, a spacing controlling means about marine loop wheel machine is related to.
Background
The common upper and lower limit of the ship crane mainly utilizes a winch main shaft to drive an external lead screw to rotate, and utilizes a movable nut on the lead screw to press a travel switch to control the upper and lower limit positions of the crane. Because of the open transmission, all mechanisms are exposed to the air, and therefore, the mechanism is extremely easy to be affected with damp, oxidized and even corroded. In addition, the lead screw is long, inconvenient to install and occupies a large space, so that the limiting device of the crane has the advantages of short service life, unreliable action and poor appearance.
Disclosure of Invention
The utility model is directed at the above-mentioned problem, a spacing controlling means about marine loop wheel machine is provided, this controlling means compact structure, action are reliable, and life is longer.
According to the technical scheme of the utility model: the utility model provides a marine loop wheel machine upper and lower spacing controlling means which characterized in that: the speed reducer is arranged at one axial end of the shell, an output shaft of the speed reducer is connected with a camshaft, and the other end of the camshaft is rotatably supported on an end cover connected with the end face of the shell; the lower limiting cam and the upper limiting cam are arranged on the cam shaft and are separated by spacing rings, the lower limiting cam and the upper limiting cam are connected with the spacing rings through bolts, and the inner wall of the shell is provided with an upper limiting contact of a hydraulic travel switch matched with the upper limiting cam and a lower limiting contact of the hydraulic travel switch matched with the lower limiting cam.
As a further improvement of the utility model, the upper limiting cam and the lower limiting cam are respectively provided with a first arc-shaped groove and a second arc-shaped groove which are distributed along the circumferential direction; the spacing ring is provided with a third arc-shaped groove and a fourth arc-shaped groove, the first arc-shaped groove is connected with the third arc-shaped groove through a bolt, and the second arc-shaped groove is connected with the fourth arc-shaped groove through another bolt.
As a further improvement of the utility model, the length of the first arc-shaped groove is greater than the length of the second arc-shaped groove, and the length of the third arc-shaped groove is greater than the length of the fourth arc-shaped groove.
As a further improvement of the utility model, the winch main shaft is connected to the input of speed reducer.
As a further improvement, the end cover is welded on the end face of the housing, and the axial outer end of the camshaft is rotatably supported in the mounting hole of the end cover.
As a further improvement, the speed reducer is fixedly connected to the axial end of the casing, and the output end of the speed reducer is sealed in the casing.
The technical effects of the utility model reside in that: the utility model adopts closed transmission, the external environment has little influence on the transmission, the maintenance-free use can be realized, and the service life is longer; in addition, the structure is simple, the shape is small, the appearance degree is good, the installation and the maintenance are convenient, the upper limit position and the lower limit position of the crane can be quickly adjusted, the safety and the reliability are effectively improved, and the damage to equipment caused by excessive rope releasing and rope winding of the winch is avoided.
Drawings
Fig. 1 is a schematic view of the installation position of the present invention.
Fig. 2 is a left side view of fig. 1.
Fig. 3 is a front view of the structure of the present invention.
Fig. 4 is a left side view of the structure of the present invention.
Fig. 5 is a three-dimensional modeling diagram of the spacing ring of the present invention.
Fig. 6 is a three-dimensional model of the cam of the present invention.
Detailed Description
The following description will further describe embodiments of the present invention with reference to the accompanying drawings.
In the drawings 1-6, the winch comprises a winch main shaft 1, a speed reducer 2, a lower limiting cam 3, a first arc-shaped groove 3-1, a second arc-shaped groove 3-2, a cam shaft 4, an upper limiting cam 5, a shell 6, an interval ring 7, a third arc-shaped groove 7-1, a fourth arc-shaped groove 7-2, a hydraulic travel switch lower limiting contact 8, a hydraulic travel switch upper limiting contact 9, an end cover 10, a crane base 11, a suspension arm 12, a suspension hook upper dead center 13, a suspension hook lower dead center 14, a winch 15 and the like.
As shown in FIG. 1, the installation position of the present invention is schematically shown. It is installed opposite to the winch 15 and takes the main shaft of the winch as the power source.
As shown in fig. 2 and 3, the utility model relates to an upper and lower limit control device of a marine crane, which comprises a shell 6, wherein a speed reducer 2 is arranged at one axial end of the shell 6, the reduction ratio of the speed reducer 2 is larger, the input end of the speed reducer 2 is connected with a winch main shaft 1, the output shaft of the speed reducer 2 is connected with a cam shaft 4,
the other end of the camshaft 4 is rotatably supported on an end cover 10 connected with the end face of the shell 6; lower limiting cam 3, upper limiting cam 5 are installed on the camshaft 4, the lower limiting cam 3 and the upper limiting cam 5 are separated by a spacing ring 7, the lower limiting cam 3, the upper limiting cam 5 and the spacing ring 7 are connected through bolts, and the inner wall of the shell 6 is provided with an upper limiting contact 9 of a hydraulic travel switch matched with the upper limiting cam 5 and a lower limiting contact 8 of the hydraulic travel switch matched with the lower limiting cam 3. It can be understood that in order to realize the matching of the upper limit cam 5 and the lower limit cam 3 with the lower limit contact 8 and the upper limit contact 9 of the hydraulic travel switch respectively in the motion process, a staggered angle is formed between the upper limit cam 5 and the lower limit cam 3; the angles of the upper limiting cam 5 and the lower limiting cam 3 are determined by the stroke of the lifting hook, a lower limiting contact 8 of a hydraulic stroke switch and an upper limiting contact 9 of the hydraulic stroke switch are correspondingly arranged below the upper limiting cam 5 and the lower limiting cam 3 respectively, and the hydraulic stroke switch is connected with a control system.
The upper limiting cam 5 and the lower limiting cam 3 are respectively provided with a first arc-shaped groove 3-1 and a second arc-shaped groove 3-2 which are distributed along the circumferential direction; the spacing ring 7 is provided with a third arc-shaped groove 7-1 and a fourth arc-shaped groove 7-2, the first arc-shaped groove 3-1 is connected with the third arc-shaped groove 7-1 through a bolt, and the second arc-shaped groove 3-2 is connected with the fourth arc-shaped groove 7-2 through another bolt.
The length of the first arc-shaped groove 3-1 is greater than that of the second arc-shaped groove 3-2, and the length of the third arc-shaped groove 7-1 is greater than that of the fourth arc-shaped groove 7-2.
An end cover 10 is welded to an end face of the housing 6, and an axially outer end of the camshaft 4 is rotatably supported in a mounting hole of the end cover 10.
The speed reducer 2 is fixedly connected to the axial end of the shell 6, and the output end of the speed reducer 2 is sealed in the shell 6.
The utility model discloses the theory of operation of device: when the lifting hook is lowered, the winch spindle 1 drives the speed reducer 2 with a high rotation ratio to rotate forwards, the camshaft 4 connected with the output shaft of the speed reducer 2 drives the lower limiting cam 3 and the upper limiting cam 5 to rotate forwards together, and when the lower limiting cam 3 presses the lower limiting contact 9 of the hydraulic travel switch, the winch 15 stops rotating, so that the lifting hook is guaranteed not to continue to move downwards. When the lifting hook rises, the winch main shaft 1 drives the speed reducer 2 with a high rotation speed ratio to rotate reversely, the cam shaft 4 connected with the output shaft of the speed reducer 2 drives the cams 3 and 5 thereon to rotate reversely, and when the upper limit cam 5 presses down the upper limit contact 8 of the hydraulic travel switch, the winch stops rotating, so that the lifting hook is ensured not to continuously move upwards. The safety protection function of the limit position is achieved. The upper limit cam 5 on the cam shaft 4 is installed at a certain angle, so that the lower limit cam 3 firstly presses down the lower limit contact 9 of the hydraulic travel switch in forward rotation, and the upper limit cam 5 firstly presses down the upper limit contact 8 of the hydraulic travel switch in reverse rotation. This ensures the reliability of the action. The upper and lower limit positions of the lifting hook of the crane can be set by adjusting the installation angles of the spacing ring 7, the upper limit cam 5 and the lower limit cam 3 on the cam shaft 4.
The utility model discloses a device not only can use on all kinds of boats and ships loop wheel machines, can also be extensive use on harbour loop wheel machine, platform loop wheel machine, adopts the closed transmission, has avoided external condition's erosion, has improved life greatly, and the outward appearance degree is better. Meanwhile, the upper limit position and the lower limit position of the crane can be conveniently adjusted, the damage of equipment caused by excessive rope unwinding and rope winding of the winch is avoided, and the safety and the reliability of the use of the equipment are greatly improved.
Claims (6)
1. The utility model provides a marine loop wheel machine upper and lower spacing controlling means which characterized in that: the device comprises a shell (6), wherein a speed reducer (2) is arranged at one axial end of the shell (6), an output shaft of the speed reducer (2) is connected with a cam shaft (4), and the other end of the cam shaft (4) is rotatably supported on an end cover (10) connected with the end face of the shell (6); lower spacing cam (3), last spacing cam (5) of installation on camshaft (4), lower spacing cam (3), last spacing cam (5) pass through interval ring (7) looks interval, lower spacing cam (3), last spacing cam (5) pass through bolted connection with interval ring (7), the inner wall of casing (6) be provided with last spacing cam (5) matched with hydraulic pressure travel switch go up spacing contact (9) and with lower spacing cam (3) matched with hydraulic pressure travel switch lower spacing contact (8).
2. The upper and lower limit control device of the marine crane according to claim 1, characterized in that: the upper limiting cam (5) and the lower limiting cam (3) are respectively provided with a first arc-shaped groove (3-1) and a second arc-shaped groove (3-2) which are distributed along the circumferential direction; the spacing ring (7) is provided with a third arc-shaped groove (7-1) and a fourth arc-shaped groove (7-2), the first arc-shaped groove (3-1) is connected with the third arc-shaped groove (7-1) through a bolt, and the second arc-shaped groove (3-2) is connected with the fourth arc-shaped groove (7-2) through another bolt.
3. The upper and lower limit control device of the marine crane according to claim 2, wherein: the length of the first arc-shaped groove (3-1) is greater than that of the second arc-shaped groove (3-2), and the length of the third arc-shaped groove (7-1) is greater than that of the fourth arc-shaped groove (7-2).
4. The upper and lower limit control device of the marine crane according to claim 1, characterized in that: the input end of the speed reducer (2) is connected with the winch spindle (1).
5. The upper and lower limit control device of the marine crane according to claim 1, characterized in that: the end cover (10) is welded on the end face of the shell (6), and the axial outer end of the camshaft (4) is rotatably supported in a mounting hole of the end cover (10).
6. The upper and lower limit control device of the marine crane according to claim 1, characterized in that: the speed reducer (2) is fixedly connected to the axial end of the shell (6), and the output end of the speed reducer (2) is sealed in the shell (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922371915.4U CN211733699U (en) | 2019-12-26 | 2019-12-26 | Upper and lower limit control device of marine crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922371915.4U CN211733699U (en) | 2019-12-26 | 2019-12-26 | Upper and lower limit control device of marine crane |
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| Publication Number | Publication Date |
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| CN211733699U true CN211733699U (en) | 2020-10-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922371915.4U Active CN211733699U (en) | 2019-12-26 | 2019-12-26 | Upper and lower limit control device of marine crane |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023091453A3 (en) * | 2021-11-16 | 2023-07-06 | Span Tech Llc | Actuator for adjustable conveyor guiderail |
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2019
- 2019-12-26 CN CN201922371915.4U patent/CN211733699U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023091453A3 (en) * | 2021-11-16 | 2023-07-06 | Span Tech Llc | Actuator for adjustable conveyor guiderail |
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