CN210505243U - Locking device and lifting appliance adopting same - Google Patents
Locking device and lifting appliance adopting same Download PDFInfo
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- CN210505243U CN210505243U CN201921344711.5U CN201921344711U CN210505243U CN 210505243 U CN210505243 U CN 210505243U CN 201921344711 U CN201921344711 U CN 201921344711U CN 210505243 U CN210505243 U CN 210505243U
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- guide rod
- guide
- locking device
- locking mechanism
- locking
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Abstract
The utility model provides a locking device and adopt device's hoist relates to the building technology field, and locking device includes support, guide bar and locking mechanism. The guide rod is connected with the support in a sliding mode, a guide groove is formed in the guide rod, and the guide rod is configured to be driven by a workpiece to be hoisted; the locking mechanism is hinged to the support and can be driven by the guide rod, so that one end of the locking mechanism is clamped into the guide groove, and the other end of the locking mechanism is pressed against the supporting leg downwards. The utility model provides a locking device can realize the locking of hoist landing leg, avoids preventing through the effort that the pneumatic cylinder produced that the landing leg is opened, reduces hydraulic system's fault rate to prevent that the section of jurisdiction from taking place the condition emergence that drops because of hydraulic system trouble at hoist and mount in-process, reduce hydraulic system's energy consumption simultaneously.
Description
Technical Field
The utility model relates to a building technical field especially relates to a locking device and adopt device's hoist.
Background
Referring to fig. 1, fig. 1 shows a segment spreader for lifting a segment 9 'having legs 8' hinged at a point a, i.e. the legs 8 'are rotatable around the point a, and one end of the legs 8' is connected to a hydraulic cylinder 10. The support legs 8 'are rotated around the point A under the action of the hydraulic cylinders 10, and the support legs 8' are opened and closed. After the legs 8' are closed, the segment 9' is lifted by the lifting device, and the lifted state needs to be maintained for a long time during the lifting process of the whole segment 9 '. The segment 9' now gives the legs 8' a vertically downward force F which tends to open the spreader and the torque required by the cylinder 10 to open the legs 8' about point a. While the typical tube sheet 9' is heavy and accordingly the force F is also large, the bending moment caused by the long-term resistance force F of the hydraulic cylinder 10 increases the failure rate of the hydraulic system and also increases the power of the hydraulic components. Meanwhile, once the hydraulic system fails, the supporting legs 8 'of the lifting appliance are opened, and the pipe piece 9' falls down, so that production accidents are caused.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a locking device can realize the locking of hoist landing leg, avoids preventing through the effort that the pneumatic cylinder produced that the landing leg is opened, reduces hydraulic system's fault rate to prevent that the section of jurisdiction from taking place the condition emergence that drops because of hydraulic system trouble at hoist and mount in-process, reduce hydraulic system's energy consumption simultaneously.
To achieve the purpose, the utility model adopts the following technical proposal:
the utility model provides a locking device, include:
a support;
the guide rod is connected with the support in a sliding mode, a guide groove is formed in the guide rod, and the guide rod is configured to be driven by a workpiece to be hoisted;
and the locking mechanism is hinged on the support and can be driven by the guide rod, so that one end of the locking mechanism is clamped in the guide groove, and the other end of the locking mechanism is downwards abutted against the supporting leg.
Preferably, the locking mechanism comprises:
the rocker arm is hinged to the bracket and inclines from bottom to top towards one side far away from the guide rod;
and the guide wheel is arranged at one end of the rocker arm, which is contacted with the guide rod, and is rotatably connected with the rocker arm.
Preferably, the method further comprises the following steps:
and one end of the elastic connecting piece is connected with the bracket, the other end of the elastic connecting piece is connected with the rocker arm, and the elastic connecting piece is configured to drive the locking mechanism to be tightly attached to the guide rod.
Preferably, the rocker arm comprises a body portion and a bending portion, and the body portion and the bending portion are arranged at an included angle.
Preferably, the guide groove has a cross-sectional shape of an arc.
Preferably, the method further comprises the following steps:
and the guide reset connecting piece is arranged on the bracket and is used for connecting and limiting the degree of freedom of the guide rod in the horizontal direction.
Preferably, the guide return link comprises:
the guide shaft is arranged on the bracket;
and the connecting sleeve is sleeved on the guide shaft and is connected with the guide rod.
Preferably, the guide return link further comprises:
and the limiting spring is sleeved on the guide shaft and arranged between the connecting sleeve and the support.
Preferably, the method further comprises the following steps:
the bolster install in the bottom of guide bar, the guide bar passes through bolster and section of jurisdiction contact.
Preferably, the method further comprises the following steps:
the sleeve is sleeved on the guide rod and connected with the support, and the guide rod can slide along the sleeve.
The utility model provides a lifting appliance, include:
a frame;
the middle part of the supporting leg is hinged with the frame;
the locking device is arranged on the rack.
Preferably, the abutting part of the support leg and the locking mechanism is provided with a groove, and the locking mechanism is configured to be capable of being clamped into the groove at one end.
The utility model has the advantages that:
1. the utility model provides a locking device realizes the locking to the landing leg through setting up locking mechanism, avoids preventing through the effort that the pneumatic cylinder produced that the landing leg is opened, reduces hydraulic system's fault rate to prevent that the section of jurisdiction from taking place the condition emergence that drops because of hydraulic system trouble at hoist and mount in-process, reduce hydraulic system's energy consumption simultaneously.
2. The utility model provides a locking device contacts with the section of jurisdiction through setting up the guide bar, carries out corresponding direction to locking mechanism according to the state of hoist and mount section of jurisdiction for locking mechanism can realize the locking to the landing leg according to the state of hoist and mount section of jurisdiction.
3. The utility model provides a locking device realizes the direction to the guide bar through setting up the direction connecting piece that resets for the guide bar can make the guide bar can automatic re-setting simultaneously along axial displacement, realizes locking mechanism's restoration, thereby realizes the unblock to the landing leg.
Drawings
FIG. 1 is a structural diagram of a lifting appliance for lifting pipe pieces in the prior art;
fig. 2 is a front view of a locking device according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view B-B of FIG. 2;
FIG. 4 is a cross-sectional view of C-C of FIG. 2;
fig. 5 is a structural matching diagram between the locking device and the supporting legs when the segment is not lifted by the lifting appliance according to the embodiment of the present invention;
fig. 6 is a structural matching diagram between the locking device and the supporting legs when the lifting appliance is lowered to the limit state according to the embodiment of the present invention;
fig. 7 is a structural matching diagram of the locking device provided by the embodiment of the invention between the hydraulic cylinder of the lifting appliance and the driving support leg after the driving support leg is closed;
fig. 8 is a structural matching diagram of the locking device provided by the embodiment of the present invention between the lifted lifting appliance and the supporting leg.
In the figure:
1. a support;
2. a locking mechanism; 21. a rocker arm; 22. a hinged lever; 23. a guide wheel;
3. an elastic connecting member;
4. a guide bar; 41. a guide groove;
5. a guide reset connecting piece; 51. a guide shaft; 52. connecting sleeves; 53. a limiting spring;
6. a buffer member;
7. a sleeve;
8. a support leg;
9. a duct piece;
10. and a hydraulic cylinder.
Detailed Description
In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention.
Referring to fig. 2-8, the present invention provides a locking device, which includes a bracket 1, a locking mechanism 2 and a guide rod 4. The bracket 1 is arranged on a lifting appliance; the locking mechanism 2 is hinged on the support 1, one end of the locking mechanism 2 is elastically connected with the support 1, and the other end of the locking mechanism 2 is used for being abutted against the supporting leg 8 of the lifting appliance to lock the supporting leg 8 of the lifting appliance; the guide rod 4 is connected with the bracket 1 in a sliding way, and a guide groove 41 is formed in the guide rod 4; one end of the elastic connecting piece 3 is connected with the bracket 1, the other end of the elastic connecting piece is connected with one end of the rocker arm 21, which is contacted with the guide rod 4, one end of the locking mechanism 2 can move along one side of the guide rod 4, which is provided with the guide groove 41, and the locking mechanism 2 inclines from bottom to top towards one side far away from the guide rod 4.
When the lifting appliance lifts the duct piece 9, the duct piece 9 abuts against the guide rod 4, so that the guide rod 4 moves upwards along the axial direction, the elastic connecting piece 3 tensions the locking mechanism 2 to tightly attach the guide rod 4 to move, when one end of the locking mechanism 2 slides to the guide groove 41, the other end of the locking mechanism 2 is clamped into the top end of the support leg 8 of the lifting appliance, a reaction force upwards along the axial direction is applied to the top of the support leg 8, and the support leg 8 is locked. The acting force generated by the hydraulic cylinder is avoided to prevent the landing leg 8 from being opened, the failure rate of the hydraulic system is reduced, and therefore the condition that the duct piece 9 drops due to the failure of the hydraulic system in the hoisting process is prevented, and meanwhile, the energy consumption of the hydraulic system is reduced.
In particular, the elastic connection 3 is a spring.
Preferably, referring to fig. 3, the locking mechanism 2 comprises a rocker arm 21 and a guide wheel 23. The rocker arm 21 is hinged on the bracket 1, and the rocker arm 21 inclines from bottom to top towards one side far away from the guide rod 4; the guide wheel 23 is installed at one end of the rocker arm 21 contacting the guide rod 4. When the guide rod 4 moves in the axial direction, the guide wheel 23 can drive one end of the rocker arm 21 to roll along the guide shaft 4, so that the friction force between the rocker arm 21 and the guide rod 4 is reduced.
Preferably, the swing arm 21 has a bent portion 211, and the bent portion 211 is inclined toward a side away from the guide bar 4. Because the hoist is when hoist and mount section of jurisdiction 9, the top of the stabilizer blade 8 of hoist both sides sets up the kink 211 of corresponding slope from bottom to top towards the inboard direction slope that is close to the hoist, can more laminate the top of stabilizer blade 8, improves the stability to the locking of stabilizer blade 8.
Preferably, the guide groove 41 has a cross-sectional shape of an arc to reduce a frictional force between the guide wheel 23 and the guide groove 41, facilitating relative movement between the guide wheel 23 and the guide groove 41.
Specifically, the locking mechanism 2 further includes a hinge rod 22, the hinge rod 22 is disposed through the rocker arm 21 and fixed on the bracket 1, and the rocker arm 21 is hinged to the bracket 1 through the hinge rod 22.
Preferably, the locking device further comprises a guide return link 5 mounted on the bracket 1 for connecting and limiting the freedom of the guide rod 4 in the horizontal direction so that the guide rod 4 does not tilt when moving in the axial direction.
Specifically, the guide return link 5 includes a guide shaft 51, a connection sleeve 52, and a limit spring 53. The guide shaft 51 is arranged on the bracket 1; the connecting sleeve 52 is sleeved on the guide shaft 51 and connected with the guide rod 4; the limiting spring 53 is sleeved on the guide shaft 51 and is arranged between the connecting sleeve 52 and the bracket 1. When the guide rod 4 moves upwards, the connecting sleeve 52 moves along the guide shaft 51 to guide the guide rod 4; meanwhile, the connecting sleeve 52 extrudes the limiting spring 53 when going upward, the limiting spring 53 stores energy, when the segment 9 is hoisted by the hanger, the supporting legs 8 leave the segment 9, the segment 9 goes downward and is separated from the guide rod 4, and the guide rod 4 goes downward and resets under the restoring force of the limiting spring 53.
Preferably, the bottom end of the guide rod 4 is further provided with a buffer member 6, and the guide rod 4 is in contact with the duct piece 9 through the buffer member 6, so that the thrust applied to the guide rod 4 by the duct piece 9 is buffered, and the guide rod 4 is prevented from being damaged due to rigid collision between the duct piece 9 and the guide rod 4. Preferably, the buffer member 6 is provided as an elastic member such as silicone rubber.
Preferably, the locking device further comprises a sleeve 7, the sleeve 7 is sleeved on the guide rod 4 and connected with the support 1, the guide rod 4 can slide along the sleeve 7, and the sleeve 7 is arranged to avoid direct friction between the guide rod 4 and the support 1 to cause abrasion.
The following details the utility model provides a locking device's working process:
referring to fig. 5, when the segment 9 is not lifted by the spreader, the leg 8 is fully opened, the guide rod 4 is extended to the maximum from the bottom of the support frame 1 under the action of the limiting spring 53, the guide wheel 23 is in contact with the edge of the guide rod 4 above the guide groove 41, a distance a is formed between the leg 8 and the rocker arm 21, the top of the leg 8 is tracked when the leg 8 rotates, as shown by the dotted circle in fig. 5-7, and the leg 8 cannot be in contact with the rocker arm 21 even if the leg 8 swings.
When the hanger descends, the segment 9 contacts with the buffer member 6 and applies upward thrust to the buffer member 6, and the guide rod 4 moves upwards under the driving of the buffer member 6 and compresses the limiting spring 53. Fig. 6 shows the limit of the upward movement of the guide rod 4 and the contact state of the swing arm 21 with the guide rod 4 when the hanger is lowered to the limit, in which the swing arm 21 contacts the edge of the guide rod 4 located below the guide groove 41, and the tilting state of the swing arm 21 is the same as the state when the hanger is not used for lifting the segment 9, that is, the leg 8 does not contact the swing arm 21 even if it swings.
Referring to fig. 7, the leg 8 is closed by the hydraulic cylinder, and the support plate at the bottom of the leg 8 is located below the segment 9 and is not in contact with the segment 9, and a distance b is formed between the support plate at the bottom of the leg 8 and the segment 9. Then, the hanger starts to lift, and in the lifting process of the hanger, under the action of the restoring force of the limiting spring 53, the guide rod 4 is pressed downwards along the axial direction, so that the buffer piece 6 is always in contact with the duct piece 9. Meanwhile, the rocker arm 21 moves upwards together with the hanger under the pulling force of the elastic connecting piece 3, so that the guide wheel 23 falls into the guide groove 41, the rocker arm 21 rotates counterclockwise by taking the hinge rod 22 as a rotating shaft, so that one end of the rocker arm 21 is clamped into a notch at the top of the supporting leg 8 as shown in fig. 8, under the action of gravity F, the supporting leg 8 applies a force F1 to the rocker arm 21, the force F1 acts on the rocker arm 21 along the axial direction of the bent part 211, and the force F1 cannot push the rocker arm 21 to rotate. Meanwhile, under the action of the force F1, the rocker arm 21 applies a transverse force F2 to the guide rod 4, the guide wheel 23 is tangent to the center of the guide groove 41, the force F2 is perpendicular to the guide rod 4, and under the action of the force F2, the guide rod 4 cannot move axially, that is, the guide rod 4 cannot drive the rocker arm 21 to rotate, and the support leg 8 is locked by the rocker arm 21.
When the segment 9 is placed on the ground by the lifting appliance, the lifting appliance drives the locking device to move downwards under the action of gravity, and the guide rod 4 moves upwards under the upward thrust of the segment 9, so that the rocker arm 21 is in a state shown in fig. 7, and the automatic unlocking of the support legs 8 of the lifting appliance after the segment 9 is put down is realized. Then, under the action of the hydraulic cylinder, the support legs 8 are opened, the hanger continues to rise, the guide rods 4 are finally separated from the segment 9, and the rocker arms 21 are reset to the state shown in fig. 5 under the action of the limiting springs 53.
The technical principle of the present invention is described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without any inventive effort, which would fall within the scope of the present invention.
Claims (12)
1. A locking device for locking a leg (8) in a spreader, comprising:
a support (1);
the guide rod (4) is connected with the support (1) in a sliding mode, a guide groove (41) is formed in the guide rod (4), and the guide rod (4) can be driven by a workpiece to be hoisted;
the locking mechanism (2) is hinged to the support (1), the locking mechanism (2) is configured to be driven by the guide rod (4), so that one end of the locking mechanism (2) is clamped into the guide groove (41), and the other end of the locking mechanism is pressed against the support leg (8) downwards.
2. A locking device according to claim 1, characterized in that the locking mechanism (2) comprises:
the rocker arm (21) is hinged to the bracket (1), and the rocker arm (21) inclines from bottom to top towards one side far away from the guide rod (4);
and the guide wheel (23) is arranged at one end of the rocker arm (21) which is contacted with the guide rod (4), and the guide wheel (23) is rotationally connected with the rocker arm (21).
3. A locking device according to claim 2, further comprising:
and one end of the elastic connecting piece (3) is connected with the bracket (1), the other end of the elastic connecting piece is connected with the rocker arm (21), and the elastic connecting piece (3) is configured to drive the locking mechanism (2) to be tightly attached to the guide rod (4).
4. A locking device according to claim 2, characterized in that the rocker arm (21) comprises a body portion and a bent portion (211), the body portion and the bent portion (211) being arranged at an angle.
5. A locking device according to claim 1, characterized in that the cross-section of the guide groove (41) is arc-shaped.
6. A locking device according to claim 1, further comprising:
and the guide reset connecting piece (5) is arranged on the bracket (1) and is used for connecting and limiting the freedom degree of the guide rod (4) in the horizontal direction.
7. A locking device according to claim 6, characterized in that the guiding reset link (5) comprises:
a guide shaft (51) mounted on the bracket (1);
and the connecting sleeve (52) is sleeved on the guide shaft (51) and is connected with the guide rod (4).
8. A locking device according to claim 7, wherein the guiding reset link (5) further comprises:
and the limiting spring (53) is sleeved on the guide shaft (51) and arranged between the connecting sleeve (52) and the bracket (1).
9. A locking device according to any of claims 1-8, further comprising:
bolster (6), install in the bottom of guide bar (4), guide bar (4) pass through bolster (6) and section of jurisdiction (9) contact.
10. A locking device according to any of claims 1-8, further comprising:
the sleeve (7) is sleeved on the guide rod (4) and connected with the support (1), and the guide rod (4) can slide along the sleeve (7).
11. A spreader, comprising:
a frame;
the middle part of the supporting leg (8) is hinged with the frame;
a locking device according to any one of claims 1 to 10, wherein the locking device is mounted on the frame.
12. A spreader according to claim 11, characterised in that the abutment of the leg (8) with the locking mechanism (2) has a recess (81), the locking mechanism (2) being configured such that one end thereof can snap into the recess (81).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921344711.5U CN210505243U (en) | 2019-08-19 | 2019-08-19 | Locking device and lifting appliance adopting same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921344711.5U CN210505243U (en) | 2019-08-19 | 2019-08-19 | Locking device and lifting appliance adopting same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210505243U true CN210505243U (en) | 2020-05-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921344711.5U Active CN210505243U (en) | 2019-08-19 | 2019-08-19 | Locking device and lifting appliance adopting same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210505243U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110371846A (en) * | 2019-08-19 | 2019-10-25 | 法兰泰克重工股份有限公司 | A kind of locking device and the suspender using the device |
-
2019
- 2019-08-19 CN CN201921344711.5U patent/CN210505243U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110371846A (en) * | 2019-08-19 | 2019-10-25 | 法兰泰克重工股份有限公司 | A kind of locking device and the suspender using the device |
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