CN215402747U - Automatic locking system of swing mechanism of cantilever crane - Google Patents
Automatic locking system of swing mechanism of cantilever crane Download PDFInfo
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- CN215402747U CN215402747U CN202120376134.9U CN202120376134U CN215402747U CN 215402747 U CN215402747 U CN 215402747U CN 202120376134 U CN202120376134 U CN 202120376134U CN 215402747 U CN215402747 U CN 215402747U
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- pin shaft
- sleeve
- slewing mechanism
- automatic locking
- locking system
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Abstract
The utility model discloses an automatic locking system of a swing mechanism of a cantilever crane, which comprises: the rotary mechanism comprises a pin shaft, a sleeve, an elastic device and a fixed handle, wherein the sleeve is fixed on a lower flange plate of the rotary mechanism, the pin shaft penetrates through the sleeve, and the pin shaft is connected with the fixed handle; the elastic device is used for driving the pin shaft to automatically lock the flange plate of the slewing mechanism; when the fixed handle is positioned at the unlocking position, the pin shaft is positioned below the upper flange plate of the slewing mechanism, and the slewing mechanism is in an unlocking state; when the fixed handle is in the locking position, the pin shaft penetrates through an upper flange plate of the rotary mechanism, and the rotary mechanism is in the locking state. The utility model can manually lock or unlock the swing mechanism and has the function of automatic locking.
Description
Technical Field
The utility model relates to an automatic locking system for a swing mechanism of a cantilever crane, and belongs to the technical field of engineering machinery.
Background
At present, with the development of urban rail transit construction in China, cantilever cranes are more and more accepted and accepted by people and participate in the hot tide of urban rail production construction more widely. Along with the increasing frequency of the use of the cantilever crane, higher requirements are put forward on the safety of the cantilever crane in the vehicle running process, and a rotating mechanism locking pin shaft is generally installed on the cantilever crane to prevent property and personnel life loss caused by the rotation of the cantilever in the running process. However, due to the limitations of cost, installation conditions and the like, automatic/manual locking and detection of the swing mechanism are not applied, and locking protection is performed only by manpower and manual operation, so that potential safety hazards exist.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects of the prior art, the utility model aims to provide an automatic locking system for a swing mechanism of a cantilever crane, which solves the problem that the swing mechanism has no automatic locking function.
In order to achieve the above object, the present invention adopts the following technical solutions: an automatic locking system for a swing mechanism of a cantilever crane, comprising: the rotary mechanism comprises a pin shaft, a sleeve, an elastic device and a fixed handle, wherein the sleeve is fixed on a lower flange plate of the rotary mechanism, the pin shaft is arranged in the sleeve in a penetrating manner, and the pin shaft is connected with the fixed handle; the elastic device is used for driving the pin shaft to automatically lock the flange plate of the slewing mechanism;
when the fixed handle is positioned at the unlocking position, the pin shaft is positioned below the upper flange plate of the slewing mechanism, and the slewing mechanism is in an unlocking state;
when the fixed handle is in the locking position, the pin shaft penetrates through an upper flange plate of the rotary mechanism, and the rotary mechanism is in the locking state.
Furthermore, the handle fixing device further comprises a fixing sleeve, the fixing sleeve is covered on the end portion of the sleeve, and the fixing handle is arranged in the fixing sleeve in a penetrating mode.
Furthermore, a groove used for penetrating through the fixed handle is formed in the fixed sleeve, and the groove comprises the unlocking position and the locking position.
Further, the groove includes a vertical groove and a transverse groove communicated with the vertical groove, the transverse groove is the unlocking position, and the vertical groove is the locking position.
Further, the groove comprises a vertical groove and an upper transverse groove and a lower transverse groove which are respectively communicated with two ends of the vertical groove, the lower transverse groove is the unlocking position, and the upper transverse groove is the locking position.
Further, the elastic device is a spring.
Further, the pin shaft is a stepped shaft, a sealing plate is arranged between the fixed sleeve and the sleeve, the pin shaft penetrates through the sealing plate, and the elastic device is located between the step of the stepped shaft and the sealing plate.
Further, still include the detection device who is used for detecting the round pin axle position.
Further, the detection device is a proximity switch.
Furthermore, the proximity switch is fixed on the base body upright post of the slewing mechanism through a mounting plate.
The utility model achieves the following beneficial effects:
the upper flange plate and the lower flange plate of the slewing mechanism are locked through the pin shaft, and the pin shaft has the manual locking or unlocking function and the automatic locking function; in addition, whether the swing mechanism of the cantilever crane is locked can be detected, so that safety accidents caused by rotation of the cantilever in the driving process are prevented, and the safety in the driving process is improved; and whether the locking pin shaft is pulled out or not can be detected, so that the damage to equipment caused by rotating the crane when the slewing mechanism is locked is prevented.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the locking state of the pin of the present invention;
FIG. 3 is a schematic view of the pin shaft of the present invention in an unlocked state;
the meanings of the symbols in the figures: 1. a base body upright; 2. mounting a plate; 3. a proximity switch; 4. fixing a sleeve; 5. fixing a handle; 6. a lower flange plate of the swing mechanism; 7. a rotary transmission mechanism; 8. a flange plate is arranged on the slewing mechanism; 9. a pin shaft; 10. an elastic device; 11. a sleeve; 12. closing the plate; 13. a connecting member.
Detailed Description
The utility model is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Example 1:
as shown in fig. 1, an automatic locking system of a swing mechanism of a jib crane comprises: the rotary mechanism comprises a pin shaft 9, a sleeve 11, an elastic device and a fixed handle 5, wherein the sleeve 11 is fixed on a lower flange plate 6 of the rotary mechanism, the pin shaft 9 is arranged in the sleeve in a penetrating manner, and the pin shaft 9 is connected with the fixed handle 5; the elastic device 10 is used for driving the pin shaft to automatically lock a flange plate of the slewing mechanism;
as shown in fig. 3, when the fixed handle 5 is in the unlocking position, the pin shaft is located below the upper flange plate 8 of the swing mechanism, and the swing mechanism is in the unlocking state; at this point, the elastic means 10 are in a compressed state,
as shown in fig. 2, when the fixed handle 5 is in the locked position, the pin shaft is inserted into the upper flange plate 8 of the swing mechanism, and the swing mechanism is in the locked state. At this time, the elastic device 10 is in a relaxed state.
After the rotation mechanism stops rotating, the pin shaft hole of the upper flange plate cannot be just above the pin shaft, after the rotation mechanism stops rotating, the upper flange plate still rotates at a low speed, the handle is pulled out of the locking position, the elastic device drives the pin shaft to automatically bounce into the pin shaft hole when the upper flange plate of the rotation mechanism rotates at the low speed, and the automatic locking function is achieved. Of course, after the upper flange plate of the slewing mechanism completely stops, if the pin shaft hole is not aligned with the pin shaft, the upper flange plate is manually shifted, and the pin shaft automatically locks the upper flange plate.
Still include fixed cover 4, fixed cover 4 covers and establishes telescopic tip, fixed handle 5 wears to locate in fixed cover 4, the lower extreme of round pin axle 9 with fixed handle 5 is connected.
The fixed sleeve 4 is provided with a groove for penetrating the fixed handle 5, and the groove comprises the unlocking position and the locking position.
Preferably, the groove comprises a vertical groove and a transverse groove communicated with the vertical groove, the transverse groove is the unlocking position, the vertical groove is the locking position, and the transverse groove is similar to an L-shaped groove and can be arranged on the left side or the right side of the vertical groove;
the elastic means 10 is a spring.
The pin shaft is a step shaft, a sealing plate 12 is arranged between the fixed sleeve 4 and the sleeve, the pin shaft penetrates through the sealing plate, and the spring is located between a step of the step shaft and the sealing plate 12.
The device further comprises a detection device for detecting the position of the pin shaft.
The detection device is a proximity switch. The proximity switch 3 is mounted on the mounting plate 2,
the proximity switch is fixed on a base body upright post 1 of the slewing mechanism through a mounting plate 2.
The proximity switch is used for detecting a pin shaft for locking the upper flange plate and the lower flange plate of the slewing mechanism, when the pin shaft is detected, a signal is output, the pin shaft locking indicator lamp is turned off, and the slewing action is allowed; when the locking pin shaft is not detected, a signal is output, the pin shaft locking indicator lamp is on, and the rotation action is cut off.
The sleeve 11 is fixed on the base body upright 1 of the slewing mechanism through a connecting piece 13.
The proximity switch is fixed on the base body upright post of the slewing mechanism through a mounting plate.
The using method comprises the following steps:
before the crane works, the pin shaft is in a locking position, the proximity switch cannot detect the pin shaft, a signal is output, and the pin shaft locking indicator lamp is on, so that an operator can be reminded to unlock;
an operator manually pulls down the handle to drive the pin shaft to move downwards, the handle is clamped in the transverse groove on the fixing sleeve and reaches an unlocking position, the pin shaft is positioned below the upper flange plate 8 of the swing mechanism, and the swing mechanism is in an unlocking state; at the moment, the proximity switch detects the pin shaft, the limitation of the rotation action is removed, and the pin shaft locking indicator lamp is turned off; the rotary transmission mechanism 7 starts to act to drive the upper flange plate to rotate.
When the swing mechanism needs to be locked, an operator pulls the handle to leave the transverse groove on the fixing sleeve, the pin shaft automatically pops upwards under the action of the elastic device, and when the pin shaft hole in the upper flange plate rotates to the position above the pin shaft, the pin shaft is automatically locked in the pin shaft hole, so that the automatic locking function is realized; the proximity switch cannot detect the pin shaft, the rotation action is limited, and the pin shaft locking indicator lamp is on.
The upper flange plate and the lower flange plate of the slewing mechanism are locked through the pin shaft, and the pin shaft has the manual locking or unlocking function and the automatic locking function; in addition, whether the swing mechanism of the cantilever crane is locked can be detected, so that safety accidents caused by rotation of the cantilever in the driving process are prevented, and the safety in the driving process is improved; and whether the locking pin shaft is pulled out or not can be detected, so that the damage to equipment caused by rotating the crane when the slewing mechanism is locked is prevented.
In the case of the example 2, the following examples are given,
on the basis of embodiment 1, the structure of the groove on the fixing sleeve is changed:
the groove comprises a vertical groove and an upper transverse groove and a lower transverse groove which are respectively communicated with two ends of the vertical groove, the lower transverse groove is the unlocking position, and the upper transverse groove is the locking position.
The arrangement is to prevent the elastic device from losing efficacy, and the fixed handle is clamped by the upper transverse groove, so that the locking effect is better.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. An automatic locking system of a swing mechanism of a cantilever crane is characterized by comprising: the rotary mechanism comprises a pin shaft (9), a sleeve (11), an elastic device and a fixed handle (5), wherein the sleeve (11) is fixed on a lower flange plate (6) of the rotary mechanism, the pin shaft (9) penetrates through the sleeve, and the pin shaft (9) is connected with the fixed handle (5); the elastic device is used for driving the pin shaft to automatically lock the flange plate of the slewing mechanism;
when the fixed handle (5) is positioned at the unlocking position, the pin shaft is positioned below the upper flange plate (8) of the slewing mechanism, and the slewing mechanism is in the unlocking state;
when the fixed handle (5) is in a locking position, the pin shaft penetrates through an upper flange plate (8) of the rotary mechanism, and the rotary mechanism is in a locking state.
2. The automatic locking system of the swing mechanism of the cantilever crane as claimed in claim 1, further comprising a fixing sleeve (4), wherein the fixing sleeve (4) covers the end of the sleeve, and the fixing handle (5) is inserted into the fixing sleeve (4).
3. The automatic locking system of the slewing mechanism of the cantilever crane according to claim 2, wherein the fixing sleeve (4) is provided with a slot for passing the fixing handle (5), and the slot comprises the unlocking position and the locking position.
4. The automatic locking system of the slewing mechanism of the cantilever crane according to claim 3, wherein the groove comprises a vertical groove and a transverse groove communicated with the vertical groove, the transverse groove is the unlocking position, and the vertical groove is the locking position.
5. The automatic locking system of the slewing mechanism of the cantilever crane according to claim 3, wherein the groove comprises a vertical groove and an upper transverse groove and a lower transverse groove respectively communicated with two ends of the vertical groove, the lower transverse groove is the unlocking position, and the upper transverse groove is the locking position.
6. The automatic locking system of the slewing mechanism of the jib crane as claimed in claim 1, wherein said resilient means is a spring.
7. The automatic locking system of a slewing mechanism of a cantilever crane as claimed in claim 2, wherein the pin is a stepped shaft, a sealing plate (12) is disposed between the fixing sleeve (4) and the sleeve, the pin passes through the sealing plate, and the elastic means is located between a step of the stepped shaft and the sealing plate (12).
8. The automatic locking system of the slewing mechanism of the jib crane as claimed in claim 1, further comprising a detecting device for detecting the position of the pin.
9. The automatic locking system of the slewing mechanism of the jib crane according to claim 8, wherein said detection means is a proximity switch (3).
10. The automatic locking system of the slewing mechanism of the jib crane according to claim 9, wherein said proximity switch is fixed on a base body column of said slewing mechanism by a mounting plate (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120376134.9U CN215402747U (en) | 2021-02-19 | 2021-02-19 | Automatic locking system of swing mechanism of cantilever crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120376134.9U CN215402747U (en) | 2021-02-19 | 2021-02-19 | Automatic locking system of swing mechanism of cantilever crane |
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| Publication Number | Publication Date |
|---|---|
| CN215402747U true CN215402747U (en) | 2022-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120376134.9U Active CN215402747U (en) | 2021-02-19 | 2021-02-19 | Automatic locking system of swing mechanism of cantilever crane |
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| CN (1) | CN215402747U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114620597A (en) * | 2022-03-23 | 2022-06-14 | 中国第一汽车股份有限公司 | Core assembling lifting appliance |
-
2021
- 2021-02-19 CN CN202120376134.9U patent/CN215402747U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114620597A (en) * | 2022-03-23 | 2022-06-14 | 中国第一汽车股份有限公司 | Core assembling lifting appliance |
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