CN112010205A - Lockpin device for preventing engineering machinery horizontal support leg from extending outwards - Google Patents
Lockpin device for preventing engineering machinery horizontal support leg from extending outwards Download PDFInfo
- Publication number
- CN112010205A CN112010205A CN202010988298.7A CN202010988298A CN112010205A CN 112010205 A CN112010205 A CN 112010205A CN 202010988298 A CN202010988298 A CN 202010988298A CN 112010205 A CN112010205 A CN 112010205A
- Authority
- CN
- China
- Prior art keywords
- locking
- sleeve
- supporting leg
- pin shaft
- locking plate
- 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.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/72—Counterweights or supports for balancing lifting couples
- B66C23/78—Supports, e.g. outriggers, for mobile cranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/88—Safety gear
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C2700/00—Cranes
- B66C2700/03—Cranes with arms or jibs; Multiple cranes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
The invention provides a lock pin device for preventing a horizontal supporting leg of an engineering machine from extending outwards; comprises a locking plate and a locking pin assembly; the locking plate is fixedly connected and fixed on the movable supporting leg box, and a locking clamping groove is formed in the end face of one side, away from the movable supporting leg box, of the locking plate; the sleeve distal end face of the lock pin assembly is provided with an opening, the sleeve is fixed on the fixed support leg box, the near end of the pin shaft extends into the sleeve, the far end of the pin shaft penetrates through the sleeve and the fixed support leg box and extends towards the locking plate, the middle part of the pin shaft extends to form a retaining ring, the spring is sleeved on the outer wall of the pin shaft in the sleeve, and two ends of the spring respectively abut against the retaining ring and the inner wall of the sleeve; the locking plate follows the motion of the movable supporting leg box, and the moving track of the locking clamping groove passes through the far end of the pin shaft. Has the advantages that: the user does not need to repeatedly insert and pull the horizontal supporting leg lock pin; safety accidents caused by forgetting to insert and pull pins can be avoided; the locking pin device is flexible to install, and can be installed at any suitable position of the movable supporting leg; the working device is very simple, the cost is low, and the maintenance is convenient.
Description
Technical Field
The invention relates to a lock pin device for preventing a horizontal supporting leg of an engineering machine from extending outwards.
Background
The main components of engineering machinery, such as automobile cranes and concrete pump trucks, can be divided into an upper working part and a lower walking supporting chassis part. Particularly, the support leg system is arranged for supporting and hoisting heavy load requirements during operation of the automobile crane, and the support legs are horizontally extended and vertical.
As shown in figure 1 (part number 1 is a horizontal supporting leg, part number 2 is a vertical supporting leg, part number 3 is a lock pin device, and part number 4 is an automobile crane chassis frame), the automobile crane supporting leg comprises the horizontal supporting leg and the vertical supporting leg, when the automobile crane is used for hoisting, the horizontal supporting leg is firstly extended (the rear supporting leg is in an extended state as shown in figure 1), then the vertical supporting leg is extended, and hoisting construction can be carried out when the whole automobile is in a horizontal state.
When the automobile crane is in a running state, the vertical supporting legs and the horizontal supporting legs are required to be completely retracted into the fixed supporting leg box of the whole automobile, and the pin device is inserted, so that safety accidents caused by the fact that the supporting legs stretch out when the automobile crane runs are prevented.
At present, engineering machinery, particularly an automobile crane, horizontal supporting leg bolts are all manual type, the structure is shown in figure 2 (a part number 31 is a support, a part number 32 is a pin shaft, a part number 33 is a handle, and a part number 34 is a bolt), the horizontal supporting leg bolts are connected with a fixed supporting leg box through the bolt 34, the handle 33 is fixedly connected with the pin shaft 32, and when the horizontal supporting leg bolt is used, the handle is held to rotate at a proper angle, and the pin shaft is pulled out or inserted. However, the prior latch devices have the following disadvantages: 1. in the current engineering machinery, particularly an automobile crane, the horizontal leg lock pin devices are all manually inserted and pulled; 2. the national standard and the operation manual of the automobile crane of each manufacturer are strictly regulated as follows: when the automobile crane is in a running state, the horizontal supporting leg lock pin device must be ensured to be in a locking state. However, after the automobile crane is used, a user often forgets to lock the horizontal supporting leg lock pin device, so that when the automobile crane runs, the horizontal supporting leg automatically extends out due to road turning centrifugal force and the like, and serious safety accidents are easily caused; 3. the user needs to continuously insert and pull the pin when using the crane, which is very tedious.
Disclosure of Invention
The invention aims to solve the technical problem of providing a locking pin device which can be automatically locked and can safely and effectively prevent a horizontal supporting leg of an engineering machine from extending outwards.
In order to solve the technical problem, the invention provides a lock pin device for preventing a horizontal supporting leg of an engineering machine from extending outwards;
comprises a locking plate and a locking pin assembly;
the locking plate is fixedly connected and fixed on the movable supporting leg box, and a locking clamping groove is formed in the end face of one side, away from the movable supporting leg box, of the locking plate;
the lock pin assembly comprises a sleeve, a pin shaft and a spring, wherein an opening is formed in the distal end face of the sleeve, the sleeve is fixedly connected to the fixed support leg box, the proximal end of the pin shaft extends into the sleeve, the distal end of the pin shaft penetrates through the sleeve and the fixed support leg box and extends towards the locking plate, a baffle ring extends from the middle of the pin shaft, the spring is sleeved on the outer wall of the pin shaft in the sleeve, one end of the spring abuts against the baffle ring, and the other end of the spring abuts against the inner wall of;
the locking plate follows the motion of the movable leg box, and the moving track of the locking clamping groove of the locking plate passes through the far end of the pin shaft.
For a clearer understanding of the technical contents of the present invention, the latch device for preventing the horizontal leg of the construction machine from extending is simply referred to as the present latch device hereinafter.
Preferably, the outer wall of the far end of the sleeve extends to form a connecting flange matched with the fixed supporting leg box, and a plurality of connecting through holes are formed in the connecting flange.
Preferably, the locking clamping groove of the locking plate is a spherical groove, and the distal end of the pin shaft is matched with the spherical crown of the locking clamping groove.
As the optimization of the lock pin device, the end face of the locking plate, which is far away from one side of the movable leg box, is also provided with a track groove, the trend of the track groove is consistent with the moving track of the locking plate, the track groove is communicated with the locking clamping groove, and the depth of the track groove is smaller than that of the locking clamping groove.
The locking pin device has the following advantages:
1. the user does not need to repeatedly insert and pull the horizontal supporting leg lock pin; safety accidents caused by forgetting to insert and pull pins can be avoided;
2. the locking pin device is flexible to install, and can be installed at any suitable position of the movable supporting leg;
3. the hydraulic or electric control can also realize the function, but the lockpin device has the advantages of simple working device, low cost and convenient maintenance.
Drawings
FIG. 1 is a schematic view of a chassis frame of a truck crane in the prior art.
Fig. 2 is a schematic diagram of a horizontal leg latch of a truck crane in the prior art.
FIG. 3 is a view of the latch device in an embodiment of the present invention in use.
FIG. 4 is an exploded view of the latch assembly of the embodiment of the latch mechanism.
FIG. 5 is a perspective view of a lockout plate of an embodiment of the present detent device.
Detailed Description
As shown in fig. 3 to 5
The latch mechanism includes a lockout plate 65 and a latch assembly.
The lock pin assembly comprises a sleeve 61, a pin shaft 62 and a spring 63, an opening is formed in the far end face of the sleeve 61, a connecting flange 61a matched with the fixed supporting leg box 52 extends from the outer wall of the far end 62b of the sleeve 61, two connecting through holes are formed in the connecting flange 61a, the sleeve 61 is fixed on the fixed supporting leg box 52 through a bolt 64, the near end of the pin shaft 62 extends into the sleeve 61, the far end 62b of the pin shaft 62 penetrates through the sleeve 61 and the fixed supporting leg box 52 and extends towards the locking plate 65, the end of the far end 62b of the pin shaft 62 is matched with the spherical crown of the locking clamping groove 65a, a blocking ring 62a extends from the middle of the pin shaft 62, the spring 63 is sleeved on the outer wall of the pin shaft 62 in the sleeve 61, one end of.
The locking plate 65 follows the movable leg box 51, and the moving track of the locking clamping groove 65a of the locking plate 65 passes through the far end 62b of the pin shaft 62.
When the automobile crane is in a driving state, under the action of the spring 63, the pin shaft 62 of the lock pin assembly extends to the maximum position and is propped against the locking clamping groove 65a of the locking plate 65, and the centrifugal force of the horizontal supporting leg caused by road bending is overcome through friction force, so that the supporting leg is prevented from automatically extending;
when the horizontal supporting leg needs to extend out, the thrust of the horizontal oil cylinder is far larger than the friction force generated by the pin shaft 62 under the action of the spring 63, so that the horizontal oil cylinder extends out, and when the pin shaft 62 moves out of the stroke of the locking plate 65, the pin shaft 62 extends to the maximum position but is not in contact with any object on the supporting leg box, so that no friction force exists.
When the horizontal supporting leg needs to retract, the retraction thrust of the horizontal oil cylinder is far larger than the friction force generated by the pin 62 under the action of the spring 63, and the friction force only needs to be overcome in the stroke of the locking plate 65, and the track groove 65b is used for guiding the pin 62 to enter the locking clamping groove 65a of the locking plate 65.
The above description is only one embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the principle of the present invention, and these should also be considered as falling within the protection scope of the present invention.
Claims (4)
1. A lockpin device for preventing a horizontal supporting leg of a construction machine from extending outwards is characterized in that:
comprises a locking plate and a locking pin assembly;
the locking plate is fixedly connected and fixed on the movable supporting leg box, and a locking clamping groove is formed in the end face of one side, away from the movable supporting leg box, of the locking plate;
the lock pin assembly comprises a sleeve, a pin shaft and a spring, wherein an opening is formed in the distal end face of the sleeve, the sleeve is fixedly connected to the fixed support leg box, the proximal end of the pin shaft extends into the sleeve, the distal end of the pin shaft penetrates through the sleeve and the fixed support leg box and extends towards the locking plate, a baffle ring extends from the middle of the pin shaft, the spring is sleeved on the outer wall of the pin shaft in the sleeve, one end of the spring abuts against the baffle ring, and the other end of the spring abuts against the inner wall of;
the locking plate follows the motion of the movable leg box, and the moving track of the locking clamping groove of the locking plate passes through the far end of the pin shaft.
2. The lock pin device for preventing the horizontal leg of the engineering machine from extending outwards as claimed in claim 1, wherein:
the outer wall of the far end of the sleeve extends to form a connecting flange matched with the fixed supporting leg box, and a plurality of connecting through holes are formed in the connecting flange.
3. The lock pin device for preventing the horizontal leg of the engineering machine from extending outwards as claimed in claim 1, wherein:
the locking clamping groove of the locking plate is a spherical groove, and the end part of the far end of the pin shaft is matched with the spherical crown shape of the locking clamping groove.
4. The lock pin device for preventing the horizontal leg of the engineering machine from extending outwards as claimed in claim 3, wherein:
the terminal surface that movable landing leg case one side was kept away from to the lock plate still opens has the orbit groove, and the trend in orbit groove is unanimous with the removal orbit of lock plate, and the orbit groove communicates with each other with the locking draw-in groove, and the degree of depth in orbit groove is less than the degree of depth of locking draw-in groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010988298.7A CN112010205A (en) | 2020-09-18 | 2020-09-18 | Lockpin device for preventing engineering machinery horizontal support leg from extending outwards |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010988298.7A CN112010205A (en) | 2020-09-18 | 2020-09-18 | Lockpin device for preventing engineering machinery horizontal support leg from extending outwards |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112010205A true CN112010205A (en) | 2020-12-01 |
Family
ID=73522620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010988298.7A Pending CN112010205A (en) | 2020-09-18 | 2020-09-18 | Lockpin device for preventing engineering machinery horizontal support leg from extending outwards |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112010205A (en) |
-
2020
- 2020-09-18 CN CN202010988298.7A patent/CN112010205A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4141455A (en) | Means for storing and connecting jib on telescopic crane boom | |
| WO2007041535A1 (en) | Mobile lift device | |
| EP1913206B1 (en) | Boom uplock arrangement | |
| AU2020281125C1 (en) | Telescoping jack for lifting large capacity trucks | |
| CA2998248C (en) | Telescoping jack for lifting large capacity trucks | |
| CA2843472C (en) | Remote activation of scissor lift cylinder prop | |
| CN212269295U (en) | Lockpin device for preventing engineering machinery horizontal support leg from extending outwards | |
| US20190337780A1 (en) | Telescoping jack for lifting large capacity trucks | |
| CN112010205A (en) | Lockpin device for preventing engineering machinery horizontal support leg from extending outwards | |
| CN111379759B (en) | Hydraulic oil cylinder assembly and crane | |
| KR102022044B1 (en) | Overturn preventing device of high place works car | |
| CN106274611A (en) | Casing anti-hook locking device | |
| CN212639772U (en) | Lateral safety structure of crane | |
| KR100682404B1 (en) | Jack for gap | |
| CN116692700A (en) | Mountain working machine | |
| CN110980559A (en) | Lateral safety structure of crane | |
| CN114105006B (en) | Jacking crossbeam, climbing frame and tower crane | |
| CN213653586U (en) | Anti-free-falling supporting mechanism | |
| KR20240000030U (en) | A manual locking apparatus applied to vehicle maintenance lift | |
| CN109809342B (en) | Safety lock for lifting mechanism | |
| CN218708766U (en) | Pin pulling interlocking connecting rod device for suspension arm | |
| US11332350B2 (en) | Telescoping jack for lifting large capacity trucks | |
| CN218579517U (en) | Interlocking mechanism, crane boom and hoisting equipment | |
| CN210162102U (en) | Motor car rescue device | |
| CN114634123A (en) | Hydraulic anti-rotation self-unlocking device and lifting transport vehicle using same |
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 |