CN112590723B - Landing leg locking mechanism, engineering machine and control method - Google Patents
Landing leg locking mechanism, engineering machine and control method Download PDFInfo
- Publication number
- CN112590723B CN112590723B CN202011578999.XA CN202011578999A CN112590723B CN 112590723 B CN112590723 B CN 112590723B CN 202011578999 A CN202011578999 A CN 202011578999A CN 112590723 B CN112590723 B CN 112590723B
- Authority
- CN
- China
- Prior art keywords
- lock
- cylinder
- lock cylinder
- lock body
- locking mechanism
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 12
- 230000002159 abnormal effect Effects 0.000 claims description 12
- 239000003921 oil Substances 0.000 claims description 10
- 230000000903 blocking effect Effects 0.000 claims description 6
- 239000010687 lubricating oil Substances 0.000 claims description 6
- 210000002445 nipple Anatomy 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 239000000945 filler Substances 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S9/00—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks
- B60S9/02—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks for only lifting or supporting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S9/00—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks
- B60S9/22—Means for attaching lifting, supporting, or manoeuvring devices to vehicles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
- F16B7/10—Telescoping systems
- F16B7/14—Telescoping systems locking in intermediate non-discrete positions
- F16B7/1472—Telescoping systems locking in intermediate non-discrete positions with a clamping screw perpendicular to the axis of the telescoping members
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lock And Its Accessories (AREA)
Abstract
The invention discloses a landing leg locking mechanism, engineering machinery and a control method, which are used for improving the reliability and safety of a landing leg locking device. The landing leg locking mechanism comprises a lock cylinder, a lock body, a short cylinder and a spring; the lock cylinder is arranged in the lock body, a reset spring for automatically resetting the lock cylinder is arranged between the lock body and the lock cylinder, and the lock cylinder can axially move relative to the lock body; the handle is connected with the short cylinder by screw threads, the short cylinder is connected with the lock cylinder by elastic cylindrical pins, and the end part is additionally provided with an elastic retainer ring for axial limiting; the end part of the lock body is provided with an inclined plane which is contacted with the short cylinder to form inclined plane movement; the handle is rotated around the axis of the lock cylinder, the lock cylinder axially stretches and contracts under the action of inclined plane movement, locking is achieved through the V-shaped protrusions on the lock body and the V-shaped grooves on the control part, and then unlocking and locking state switching are conducted.
Description
Technical Field
The invention belongs to the field of engineering machinery, and particularly relates to a supporting leg locking mechanism.
Background
The locking mechanism has wider application in engineering machinery equipment. For example, many mobile engineering machinery devices have telescopic or swinging legs, which need to be unfolded during operation to ensure reliable support of the whole vehicle, but the legs must be retracted and reliably locked during running to ensure the trafficability and safety of the device. In order to prevent the legs of the mobile working machine from being extended or swung out unintentionally in the retracted state, a leg locking mechanism is required to lock the legs reliably.
The existing locking mechanism mostly comprises a pin shaft, a pin seat, a thin steel rope with a fixed lock catch and other parts, has complex structure and inconvenient operation, and does not meet the operation convenience and the working reliability of the locking mechanism. The existing lock body of the supporting leg locking mechanism is of a circular tube structure, an L-shaped chute is machined on the side wall of the lock body, one end of the lock body is closed, a lock cylinder is arranged in the lock body, and an operating handle is connected to the lock cylinder; a reset spring is arranged between the bottom surface in the lock body and one end of the pin shaft. The lock body with the sliding groove is welded with the mounting flange plate and is fixed on the fixed part of the movable engineering machine through bolts. When the locking is needed, the operating handle is pulled along the L-shaped chute and rotated for 90 degrees to release the handle, and the lock cylinder stretches out under the action of the spring force and stretches into the positioning hole arranged on the supporting leg to lock the supporting leg. When the lock is required to be unlocked, the operating handle is pulled along the L-shaped chute, the spring force is overcome, and the handle is rotated by 90 degrees when the operating handle is pulled to the terminal end of the L-shaped chute, so that the handle is clamped in the limit opening of the L-shaped chute, and the support leg lock is kept in an unlocking state. The locking state and the locking state of the supporting leg locking mechanism are maintained by the tension force of the reset spring. The existing landing leg locking mechanism is provided with a circular tube lock body, an L-shaped chute is arranged on the side wall of the lock body, one end of the lock body is closed, a pin shaft S lock cylinder is arranged in the lock body, a handle is connected to the lock cylinder, and a reset spring is arranged between the bottom surface of the lock body and one end of the pin shaft.
However, the prior art has some defects that firstly, an L-shaped chute is arranged on the side wall of the lock body, and one branch of the L-shaped chute is arranged on the side wall in a central way parallel to the axis of the lock body, so that the structure is inconvenient to machine; furthermore, the corners of the L-shaped sliding grooves are worn during long-term use of the operating handle, so that the handle is easy to slip under the action of the return spring and slides from the non-extending position to the extending position of the pin shaft; if the corner is reworked, the purposes of accurate limiting and locking are difficult to achieve; finally, during unlocking operation, the handle is required to be pulled along the axis with force, so that the return spring is compressed again, the spring force is large, and the operation is laborious. Moreover, during the mechanical transportation, the locking mechanism may fail, resulting in a safety hazard.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a landing leg locking mechanism, engineering machinery and a control method, so as to improve the reliability and safety of a landing leg locking device.
In order to achieve the above purpose, the invention is realized by adopting the following technical scheme:
in a first aspect, the invention provides a landing leg locking mechanism, which comprises a lock cylinder, a lock body, a short cylinder and a spring; the lock body is welded with a flange plate, a lock body inclined plane is arranged on the lock body, and a short cylinder inclined plane matched with the lock body inclined plane is arranged on the short cylinder; the flange plate is used for being fixedly connected with the movable engineering machinery; the lock body inclined plane and the short cylinder inclined plane are respectively provided with a limit bulge and a limit clamping groove which are matched with each other; the lock body and the middle part of the short cylinder form a through hole which is communicated with each other; the lock cylinder is arranged in the through holes of the lock body and the short cylinder in a penetrating way; a spring for automatically resetting the lock cylinder is arranged between the lock body and the lock cylinder; the lock body is internally provided with a shaft shoulder for fixing the spring; the lock cylinder is of a stepped shaft structure and can axially move relative to the lock body, and one end of the lock cylinder forms a blocking edge; the spring is sleeved on the lock cylinder, and two ends of the spring are respectively abutted against the shaft shoulder and the blocking edge; the short cylinder is fixedly connected with the lock cylinder, and a handle is fixedly connected to the short cylinder; the handle rotates around the axis of the lock cylinder, and the lock cylinder axially stretches under the action of the inclined plane of the lock body and the inclined plane of the short cylinder, so that the unlocking state and the locking state are switched; when the supporting leg locking mechanism is in an unlocking state, the limiting protrusion and the limiting clamping groove are clamped together to limit the lock cylinder; the spring is still in a compressed state when the leg locking mechanism is in a locked state.
Further, the limiting protrusion is a V-shaped protrusion, and the limiting clamping groove is a V-shaped clamping groove.
Further, a through hole is formed in the end portion of the lock cylinder, inserted into the short cylinder, of the lock cylinder, a pin hole corresponding to the through hole is formed in the short cylinder, and the short cylinder is fixedly connected with the lock cylinder through an elastic cylindrical pin shaft inserted into the through hole and the pin hole.
Furthermore, the end part of the lock cylinder, which is inserted into the short cylinder, is provided with an elastic check ring groove, and an elastic check ring is arranged in the elastic check ring groove for axial limiting.
Further, the middle part of the lock body is provided with an oil filling hole and an oil nozzle detachably connected to the oil filling hole, and the oil filling hole is used for filling lubricating oil into a cavity between the lock body and the lock cylinder.
Further, the handle is in threaded connection with the short cylinder.
Further, the landing leg locking mechanism further comprises a control module and a warning module in signal connection with the control module; the other end of the lock body, which is in contact with the short cylinder, is provided with a sensor, the lock cylinder is provided with a first sensing piece and a second sensing piece which are matched with the sensor, the first sensing piece is arranged at a corresponding position of the lock cylinder relative to the sensor in an unlocking state, and the second sensing piece is arranged at a corresponding position of the lock cylinder relative to the sensor in a locking state; the sensor is in signal connection with the control module; when the sensor senses the first sensor chip, an unlocked signal is transmitted to the control module, and the control module controls the warning module to send a prompt for carrying out the extending operation of the support legs according to the unlocked signal; when the sensor senses a second sensor sheet, an unlocked signal is transmitted to the control module, and the control module controls the warning module to send a prompt capable of moving the engineering machinery according to the unlocked signal; when the sensors do not sense the first sensor sheet and the second sensor sheet, an abnormal signal is sent to the control module, and the control module controls the warning module to send out an abnormal prompt according to the abnormal signal.
In a second aspect, the present invention provides a mobile engineering machine, including a vehicle body, a leg mounted on the vehicle body, and the leg locking mechanism, where the leg locking mechanism is disposed on the vehicle body, and is used to switch the locking state of the leg.
Further, the supporting leg locking mechanism is fixed on the vehicle body through the flange plate and the bolts, and lock core positioning holes or limiting blocks are arranged at corresponding positions of the telescopic and swinging supporting legs on the vehicle body; the handle rotates around the axis of the lock cylinder, and the lock cylinder axially stretches under the action of the inclined plane of the lock body and the inclined plane of the short cylinder, so that the lock cylinder is matched with the positioning hole or the limiting block to unlock or lock the supporting leg.
In a third aspect, the present invention provides a leg locking method, based on the leg locking method, including: when in locking operation, the handle is rotated around the axis of the lock cylinder, so that the limiting protrusion is separated from the limiting clamping groove, and the lock cylinder is reset and locked under the action of the spring, so that the supporting leg locking mechanism is in a locking state; during unlocking operation, the handle is rotated around the axis of the lock cylinder, so that the limiting protrusion is clamped with the limiting clamping groove, and the short cylinder and the lock body are stably connected under the action of the spring and the limiting clamping groove, so that the supporting leg locking mechanism is in an unlocking state.
Compared with the prior art, the invention has the beneficial effects that:
1. According to the landing leg locking mechanism, the operating handle is rotated around the axis of the lock cylinder, the lock cylinder axially stretches and contracts under the action of the inclined plane moving pair of the lock body and the short cylinder, and then the switching between the unlocking state and the locking state of the landing leg locking mechanism is realized; compared with the locking mechanism in the prior art, the locking mechanism is simple in structure and convenient to manufacture, and the reliable locking of the support leg can be ensured by matching with the limiting hole or the limiting block on the support leg;
2. the invention adopts a mode of rotating around the axis of the lock cylinder, the unlocking state and the locking state differ by 180 degrees, and the rotating direction does not need to be distinguished; the unlocking and locking state switching can be realized by rotating 180 degrees in any direction; the requirements on the application space of the installation of the locking mechanism are wider, and the whole layout of the engineering machinery is facilitated;
3. The V-shaped limiting clamping groove structure is characterized in that machining features are arranged at the end part of a part, so that the manufacturing manufacturability is better;
4. The lock body is provided with the lubricating nipple, lubricating oil is injected into the lubricating oil storage cavity in the lock body, and the long-time smooth extension and retraction of the lock core can be ensured;
5. By the control module and the warning module provided by the invention, different support leg locking mechanism states can be prompted, so that the safety and reliability of operation are ensured.
Drawings
FIG. 1 is a semi-sectional view of a first embodiment of the invention;
FIG. 2 is an exploded view of a structure of a first embodiment of the present invention;
fig. 3 is a schematic structural view of a locked state according to the first embodiment of the present invention;
fig. 4 is a schematic view of an unlocked state according to the first embodiment of the present invention;
FIG. 5 is a schematic diagram of a locking structure of a second embodiment of the present invention;
fig. 6 is a schematic diagram of a fixed connection structure of a second embodiment of the present invention.
In the figure:
1. A lock body; 11. a lock body inclined plane; 2. a lock core; 3. a spring; 4. a handle; 5. a short cylinder; 51. a short cylinder inclined plane; 6. a pin shaft; 7. a circlip; 8. a nipple; 9. v-shaped protrusions; 10. v-shaped clamping grooves; 11. a sensor; 121. a first sensor patch; 122. a second sensor chip; 13. a flange plate; 14. a limiting block; 15. a vehicle body; 16. a telescopic support leg; 17. and a supporting leg locking mechanism.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that, if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are used, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, only for convenience of describing the present invention and simplifying the description, and does not indicate or imply that the indicated apparatus or element must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Embodiment one:
the embodiment provides a supporting leg locking mechanism, which is suitable for locking supporting legs of a mobile engineering machine, and can effectively ensure the safety of the mobile engineering machine, and comprises a lock cylinder 2, a lock body 1, a short cylinder 5 and a spring 3 as shown in figures 1-2; the lock body 1 is welded with a flange plate 13, the lock body 1 is provided with a lock body inclined plane 11, and the short cylinder 5 is provided with a short cylinder inclined plane 51 matched with the lock body inclined plane 11.
The flange plate 13 is used for being fixedly connected with the movable engineering machinery; the flange plate 13 is provided with a plurality of bolt holes, and can be fixedly connected with the movable engineering machinery through the bolt holes.
The lock body inclined plane 11 and the short cylinder inclined plane 51 are respectively provided with a limit bulge and a limit clamping groove which are matched with each other; the middle parts of the lock body 1 and the short cylinder 5 form a through hole which is communicated with each other; the lock cylinder 2 is arranged in the through holes of the lock body 1 and the short cylinder 5 in a penetrating way; a spring 3 for automatically resetting the lock cylinder 2 is arranged between the lock body 1 and the lock cylinder 2; a shaft shoulder for fixing the spring 3 is arranged in the lock body 1; the lock cylinder 2 is of a stepped shaft structure and can axially move relative to the lock body 1, and one end of the lock cylinder 2 forms a blocking edge; the spring 3 is sleeved on the lock cylinder 2, and two ends of the spring are respectively abutted against the shaft shoulder and the blocking edge.
The short cylinder 5 is fixedly connected with the lock cylinder 2, and the short cylinder 5 is fixedly connected with a handle 4 through threads.
As shown in fig. 3-4, by rotating the handle 4 around the axis of the lock cylinder 2, the lock cylinder 2 is axially stretched under the action of the lock body inclined surface 11 and the short cylinder inclined surface 51, so that the unlocking state and the locking state are switched; as shown in fig. 4, when the leg locking mechanism 17 is in an unlocked state, the limiting protrusion and the limiting slot are clamped together to limit the lock cylinder 2; the spring 3 is still in a compressed state when the supporting leg locking mechanism 17 is in a locking state, and the lock cylinder 2 is reliably locked under the action of the pressure of the spring 3.
The limiting protrusion is a V-shaped protrusion 9, the limiting clamping groove is a V-shaped clamping groove 10, and the limiting clamping groove is not limited to the V shape and can also take other shapes. The V-shaped limiting clamping groove structure of the embodiment has the machining characteristics at the end part of the part, and the manufacturing manufacturability is better.
During unlocking operation, the operating handle 4 is rotated around the axis of the lock cylinder 2, and the inclined planes of the lock body 1 and the short cylinder 5 enable the operating force in the unlocking operation process to be supported in an auxiliary mode all the time, so that the operation is more convenient and labor-saving. During locking operation, the operating handle 4 is rotated around the axis of the lock cylinder 2, so that the V-shaped bulge 9 is separated from the V-shaped clamping groove 10, and the lock cylinder 2 can be reset and locked under the action of the spring 3 without manual pulling, thereby being fast and labor-saving.
The end of the lock cylinder 2 inserted into the short cylinder 5 is provided with a through hole, the short cylinder 5 is provided with a pin hole corresponding to the position of the through hole, the short cylinder 5 is fixedly connected with the lock cylinder 2 through an elastic cylindrical pin shaft 6 inserted into the through hole and the pin hole, the pin shaft 6 is detachably connected to the short cylinder 5, the fixing and the detachment of the short cylinder 5 and the lock cylinder 2 are facilitated, and the lock cylinder is simple in structure and convenient to use.
The end part of the lock cylinder 2, which is inserted into the short cylinder 5, is provided with a circlip 7 for axial limiting, and the lock cylinder 2 is also provided with a matched circlip groove.
The lock is characterized in that an oil filling hole and an oil nozzle 8 detachably connected to the oil filling hole are formed in the middle of the lock body 1, the oil filling hole is used for filling lubricating oil into a cavity between the lock body 1 and the lock cylinder 2, and a lubricating oil storage cavity inside the lock body 1 can ensure that the lock cylinder 2 stretches out and draws back smoothly for a long time.
The landing leg locking mechanism provided by the embodiment further comprises a control module and a warning module in signal connection with the control module; the other end of the lock body 1, which is in contact with the short cylinder 5, is provided with a sensor 11, the lock cylinder 2 is provided with a first sensor sheet 121 and a second sensor sheet 122 which are matched with the sensor, the first sensor sheet 121 is arranged at a corresponding position of the lock cylinder 2 relative to the sensor 11 in an unlocking state, and the second sensor sheet 122 is arranged at a corresponding position of the lock cylinder 2 relative to the sensor 11 in a locking state; the sensor 11 is in signal connection with the control module; when the sensor 11 senses the first sensor chip 121, an unlocked signal is transmitted to the control module, and the control module controls the warning module to send a prompt for carrying out the extending operation of the support legs according to the unlocked signal; when the sensor 11 senses the second sensor piece 122, an unlocked signal is transmitted to the control module, and the control module controls the warning module to send a prompt capable of moving the engineering machinery according to the unlocked signal; when neither the sensor 11 senses the first sensor piece 121 nor the second sensor piece 122, an abnormal signal is sent to the control module, and the control module controls the warning module to send out an abnormal prompt according to the abnormal signal. Different states of the supporting leg locking mechanism 17 can be prompted through the control module and the warning module, so that the safety and the reliability of operation are guaranteed.
The supporting leg locking mechanism 17 provided by the embodiment rotates the operating handle 4 around the axis of the lock cylinder 2, and the lock cylinder 2 axially stretches and contracts under the action of the inclined planes of the lock body 1 and the short cylinder 5, so that the switching between the unlocking state and the locking state of the supporting leg locking mechanism 17 is realized; compared with the locking mechanism in the prior art, the locking mechanism is simple in structure and convenient to manufacture, and the reliable locking of the support leg can be ensured by matching the limiting holes or limiting blocks 14 on the support leg as shown in fig. 5-6.
In addition, the embodiment adopts a mode of rotating around the axis of the lock cylinder 2, the unlocking state and the locking state differ by 180 degrees, and the rotating direction does not need to be distinguished; the unlocking and locking state switching can be realized by rotating 180 degrees in any direction; the requirements on the application space of the installation of the locking mechanism are wider, and the whole layout of the engineering machinery is facilitated.
Embodiment two:
The present embodiment provides a mobile engineering machine, including a vehicle body 15, a telescopic leg 16 mounted on the vehicle body 15, and a leg locking mechanism 17 according to the first embodiment, where the leg locking mechanism 17 is disposed on the vehicle body 15, and is used for implementing switching of the locking state of the telescopic leg 16.
As shown in fig. 5-6, the supporting leg locking mechanism 17 is fixed on the vehicle body 15 through the flange plate 13 and bolts, and the corresponding positions of the telescopic and swinging supporting legs on the vehicle body 15 are provided with positioning holes or limiting blocks 14 of the lock cylinder 2; by rotating the handle 4 around the axis of the lock cylinder 2, the lock cylinder 2 is axially stretched under the action of the lock body inclined plane 11 and the short cylinder inclined plane 51, so that the lock legs are unlocked or locked by matching with the positioning holes or the limiting blocks 14.
Compared with the locking mechanism in the prior art, the movable engineering machine is simple in structure and convenient to manufacture, and the reliable locking of the support leg can be ensured by being matched with the limiting hole or the limiting block 14 on the support leg.
During unlocking operation, the handle 4 is required to be pulled along the axis in the prior art, so that the return spring 3 is compressed again, the force of the spring 3 to be overcome is large, and the operation is laborious. The inclined planes of the lock body 1 and the short cylinder 5 enable the operation force in the unlocking operation process to be supported in an auxiliary mode all the time, unlocking is assisted, and operation is more convenient and labor-saving. During locking operation, the operating handle 4 is rotated around the axis of the lock cylinder 2, so that the V-shaped protrusion 9 is separated from the V-shaped clamping groove 10, and the lock cylinder 2 can be reset and locked under the action of the spring 3 without manual pulling, thereby being fast and labor-saving.
In the embodiment, a mode of rotating around the axis of the lock cylinder 2 is adopted, the unlocking state and the locking state differ by 180 degrees, and the rotating direction does not need to be distinguished; the unlocking and locking state switching can be realized by rotating 180 degrees in any direction; the requirements on the application space of the installation of the locking mechanism are wider, and the whole layout of the engineering machinery is facilitated.
In addition, the driving system of the vehicle body 15 is connected with a control module and a warning module, the warning module is arranged in the driving cab, the sensor 11 is not limited to be arranged on the lock body 1, but also can be arranged on the vehicle body 15, a first sensor sheet 121 and a second sensor sheet 122 which are matched with the sensor are arranged on the lock cylinder 2, the first sensor sheet 121 is arranged at a corresponding position of the lock cylinder 2 in an unlocking state relative to the sensor 11, and the second sensor sheet 122 is arranged at a corresponding position of the lock cylinder 2 in a locking state relative to the sensor 11; the sensor 11 is in signal connection with the control module; when the sensor 11 senses the first sensor chip 121, an unlocked signal is transmitted to the control module, and the control module controls the warning module to send a prompt for carrying out the extending operation of the support legs according to the unlocked signal; when the sensor 11 senses the second sensor piece 122, an unlocked signal is transmitted to the control module, and the control module controls the warning module to send a prompt capable of moving the engineering machinery according to the unlocked signal; when neither the sensor 11 senses the first sensor piece 121 nor the second sensor piece 122, an abnormal signal is sent to the control module, and the control module controls the warning module to send out an abnormal prompt according to the abnormal signal. Different states of the supporting leg locking mechanism 17 can be prompted through the control module and the warning module, so that the safety and the reliability of operation are guaranteed.
Embodiment III:
The present embodiment provides a leg locking method, which based on the leg locking method described in the first embodiment, includes: during locking operation, the handle 4 is rotated around the axis of the lock cylinder 2, so that the limiting protrusion is separated from the limiting clamping groove, the lock cylinder 2 is reset and locked under the action of the spring 3, and the supporting leg locking mechanism 17 is in a locking state; during unlocking operation, the handle 4 is rotated around the axis of the lock cylinder 2, so that the limiting protrusion is clamped with the limiting clamping groove, and the short cylinder 5 and the lock body 1 are stably connected under the action of the spring 3 and the limiting clamping groove, so that the supporting leg locking mechanism 17 is in an unlocking state.
In addition, the embodiment also provides a method for performing safety control by using the sensor 11, when the lock cylinder 2 is in an unlocking state and a locking state, the corresponding positions which can be sensed by the sensor 11 are respectively provided with the first sensor piece 121 and the second sensor piece 122, and when the sensor 11 senses the first sensor piece 121, a prompt for performing the extending operation of the supporting leg is sent; when the sensor 11 senses the second sensor piece 122, a prompt for enabling the movement of the engineering machinery is sent; when neither the sensor 11 senses the first sensor piece 121 nor the second sensor piece 122, an abnormality prompt is sent out, thereby ensuring the safety and reliability of operation.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature, and in the description of the invention, "a plurality" means two or more, unless otherwise specifically and clearly defined.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives, and variations may be made in the above embodiments by those skilled in the art without departing from the spirit and principles of the invention.
Claims (8)
1. The landing leg locking mechanism is characterized by comprising a lock cylinder, a lock body, a short cylinder and a spring; the lock body is welded with a flange plate, a lock body inclined plane is arranged on the lock body, and a short cylinder inclined plane matched with the lock body inclined plane is arranged on the short cylinder; the flange plate is used for being fixedly connected with the movable engineering machinery;
The lock body inclined plane and the short cylinder inclined plane are respectively provided with a limit bulge and a limit clamping groove which are matched with each other; the lock body and the middle part of the short cylinder form a through hole which is communicated with each other; the lock cylinder is arranged in the through holes of the lock body and the short cylinder in a penetrating way; a spring for automatically resetting the lock cylinder is arranged between the lock body and the lock cylinder; the lock body is internally provided with a shaft shoulder for fixing the spring; the lock cylinder is of a stepped shaft structure and can axially move relative to the lock body, and one end of the lock cylinder forms a blocking edge; the spring is sleeved on the lock cylinder, and two ends of the spring are respectively abutted against the shaft shoulder and the blocking edge; the short cylinder is fixedly connected with the lock cylinder, and a handle is fixedly connected to the short cylinder;
The handle is rotated around the axis of the lock cylinder, and the lock cylinder axially stretches and contracts relative to the lock body under the action of the inclined surface of the lock body and the inclined surface of the short cylinder, so that the unlocking state and the locking state are switched; when the supporting leg locking mechanism is in an unlocking state, the limiting protrusion and the limiting clamping groove are clamped together to limit the lock cylinder; the spring is still in a compressed state when the supporting leg locking mechanism is in a locking state;
The end part of the lock cylinder, inserted into the short cylinder, is provided with a through hole, the short cylinder is provided with a pin hole corresponding to the position of the through hole, and the short cylinder is fixedly connected with the lock cylinder through an elastic cylindrical pin shaft inserted into the through hole and the pin hole;
the limiting protrusion is a V-shaped protrusion, and the limiting clamping groove is a V-shaped clamping groove.
2. The leg locking mechanism as recited in claim 1, wherein the end of the lock cylinder that is inserted into the stub is provided with a circlip groove in which a circlip is mounted for axial restraint.
3. The leg locking mechanism as recited in claim 1, wherein the lock body has an oil filler hole in a middle portion thereof and a nipple removably attached to the oil filler hole for injecting lubricating oil into a cavity between the lock body and the lock cylinder.
4. The leg locking mechanism of claim 1 wherein the handle is threadably connected to the stub barrel.
5. The leg locking mechanism of claim 1, further comprising a control module and a warning module in signal communication with the control module;
The other end of the lock body, which is in contact with the short cylinder, is provided with a sensor, the lock cylinder is provided with a first sensor sheet and a second sensor sheet which are matched with the sensor, the first sensor sheet is arranged at a corresponding position of the lock cylinder relative to the sensor in an unlocking state, and the second sensor sheet is arranged at a corresponding position of the lock cylinder relative to the sensor in a locking state; the sensor is in signal connection with the control module; when the sensor senses the first sensor chip, an unlocked signal is transmitted to the control module, and the control module controls the warning module to send a prompt for carrying out the extending operation of the support legs according to the unlocked signal; when the sensor senses a second sensor sheet, an unlocked signal is transmitted to the control module, and the control module controls the warning module to send a prompt capable of moving the engineering machinery according to the unlocked signal; when the sensors do not sense the first sensor sheet and the second sensor sheet, an abnormal signal is sent to the control module, and the control module controls the warning module to send out an abnormal prompt according to the abnormal signal.
6. A mobile working machine comprising a vehicle body, a leg mounted on the vehicle body, and a leg lock mechanism as claimed in any one of claims 1 to 5, the leg lock mechanism being provided on the vehicle body for effecting switching of a lock state of the leg.
7. The mobile working machine according to claim 6, wherein the leg locking mechanism is fixed on a vehicle body through the flange plate and the bolt, and lock cylinder positioning holes or limiting blocks are arranged at corresponding positions of the telescopic and swinging legs on the vehicle body; the handle rotates around the axis of the lock cylinder, and the lock cylinder axially stretches under the action of the inclined plane of the lock body and the inclined plane of the short cylinder, so that the lock cylinder is matched with the positioning hole or the limiting block to unlock or lock the supporting leg.
8. A leg locking method, characterized by comprising, based on the leg locking mechanism of any one of claims 1 to 5:
when in locking operation, the handle is rotated around the axis of the lock cylinder, so that the limiting protrusion is separated from the limiting clamping groove, and the lock cylinder is reset and locked under the action of the spring, so that the supporting leg locking mechanism is in a locking state;
During unlocking operation, the handle is rotated around the axis of the lock cylinder, so that the limiting protrusion is clamped with the limiting clamping groove, and the short cylinder and the lock body are stably connected under the action of the spring and the limiting clamping groove, so that the supporting leg locking mechanism is in an unlocking state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011578999.XA CN112590723B (en) | 2020-12-28 | 2020-12-28 | Landing leg locking mechanism, engineering machine and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011578999.XA CN112590723B (en) | 2020-12-28 | 2020-12-28 | Landing leg locking mechanism, engineering machine and control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112590723A CN112590723A (en) | 2021-04-02 |
| CN112590723B true CN112590723B (en) | 2024-06-14 |
Family
ID=75203702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011578999.XA Active CN112590723B (en) | 2020-12-28 | 2020-12-28 | Landing leg locking mechanism, engineering machine and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112590723B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN214355947U (en) * | 2020-12-28 | 2021-10-08 | 徐州徐工施维英机械有限公司 | Landing leg locking mechanism and engineering machinery |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101856839B (en) * | 2010-06-18 | 2012-05-30 | 三一重工股份有限公司 | Outrigger locking device and concrete pump truck |
| CN102951129B (en) * | 2011-08-29 | 2015-04-22 | 北汽福田汽车股份有限公司 | Locking device used for locking support leg in engineering machine |
| CN102381291B (en) * | 2011-09-14 | 2014-09-10 | 三一汽车制造有限公司 | Retractable support leg and engineering machine with same |
| CN202294725U (en) * | 2011-09-25 | 2012-07-04 | 三一重工股份有限公司 | Engineering machinery, support leg locking device thereof and telescopic support leg structure thereof |
| CN110712630B (en) * | 2019-10-15 | 2024-04-26 | 三一汽车制造有限公司 | Landing leg locking means and special vehicle |
-
2020
- 2020-12-28 CN CN202011578999.XA patent/CN112590723B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN214355947U (en) * | 2020-12-28 | 2021-10-08 | 徐州徐工施维英机械有限公司 | Landing leg locking mechanism and engineering machinery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112590723A (en) | 2021-04-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109987066B (en) | Battery box unlocking device, battery box and battery box quick battery changing system | |
| CN214355947U (en) | Landing leg locking mechanism and engineering machinery | |
| US4350255A (en) | Telescoping mobile crane | |
| US20170305215A1 (en) | Trailer Coupling Comprising a Sensor | |
| CN107036745B (en) | Latch hook staring torque measuring device and method for uplock reliability test | |
| CN112590723B (en) | Landing leg locking mechanism, engineering machine and control method | |
| CN101243229B (en) | Boom uplock arrangement | |
| CN110712630A (en) | Landing leg locking device and special vehicle | |
| CN108417959B (en) | Locking device for motorized radar antenna pedestal | |
| CA2843472C (en) | Remote activation of scissor lift cylinder prop | |
| CN201095160Y (en) | Concrete pump vehicle supporting leg locking device | |
| CN212639777U (en) | Locking mechanical system and hoist | |
| CN111824986A (en) | Rotary pin plugging mechanism and automobile crane | |
| CN111559712B (en) | Locking mechanism and crane | |
| CN210031947U (en) | Quick-change device for generic tools and application device thereof in telescopic boom forklift | |
| CN212769461U (en) | Automobile crane supporting leg locking device | |
| CN109292697B (en) | Working equipment driving arm and overhead working truck | |
| IT201600095048A1 (en) | DEVICE FOR TOTAL OR SELECTIVE LOCKING OF A CHEST OF A TRANSPORT VEHICLE | |
| CN209383337U (en) | Operating equipment actuating arm and high-altitude operation vehicle | |
| CN109853653B (en) | Quick-changing device for accessory | |
| CN220708295U (en) | Hinge shaft coaxiality detection device | |
| CN218935720U (en) | Automatic landing leg lock, landing leg and engineering machinery | |
| CN216155361U (en) | Mechanical locking device for hydraulic support leg | |
| CN218174593U (en) | Locking mechanism of rotary table, rotary mechanism and aerial working device | |
| CN114455089B (en) | Helicopter probe rod |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |