CN206767480U - A kind of tower-crane torque limiter - Google Patents
A kind of tower-crane torque limiter Download PDFInfo
- Publication number
- CN206767480U CN206767480U CN201720548722.XU CN201720548722U CN206767480U CN 206767480 U CN206767480 U CN 206767480U CN 201720548722 U CN201720548722 U CN 201720548722U CN 206767480 U CN206767480 U CN 206767480U
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- CN
- China
- Prior art keywords
- tower
- pressure measurement
- measurement plate
- torque limiter
- column
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Abstract
The utility model discloses a kind of tower-crane torque limiter, including column, the column is sequentially provided with the test chamber being mutually communicated, accommodating chamber and pilot hole；Also include into manometric module, pressure measurement plate being located in test chamber by pressure measurement plate and with the guide post group of pressure measurement plate Joint, and guide rod through pilot hole and stretches out in column；Multiple diaphragm pressure sensors are provided with pressure measurement plate on the side opposite with accommodating chamber；Adjustable plate is actively provided with guide rod, and the first pull bar is connected with end；Set is placed with accommodating chamber, and spring and one end are resisted against on pressure measurement plate on the guide bar；Shrouding is provided with the outside of test chamber, the second pull bar is connected with the middle part of shrouding.Beneficial effect is：Using spring as return unit, the generation of deformation is avoided, and entirety has protective action, and sensing element can be protected simple by the destruction corroded, overall structure；Using diaphragm pressure sensor, it is swift in response, service life length.
Description
Technical field
It the utility model is related to a kind of safety device for preventing tower crane overload operation, more particularly to a kind of tower crane moment limit
Device processed.
Background technology
Traditional limiter of moment is mostly circular ring type, mainly by torus, the cambered plate being located in torus and sensing
Device, the fixed block composition for being fixed on two force rods of torus outer wall and being located in fix bar.Drawn by force rod
Power, cambered plate deformation is driven, and then make working sensor and send signal, but due to being that signal is transmitted by the way of deformation,
Torus can deform after a number of uses, and cambered plate can also deform, and the reaction of the acquisition signal made slows up, and tower crane is
Also it is not stopped after drag torque is limited, easily causes contingency.And existing most cambered torque-limiters do not have yet
There is protective action, be easily out of order after long-term use of, have a strong impact on the effect for preventing tower crane overload operation.
Utility model content
The purpose of this utility model is to overcome in the prior art that cambered plate is yielding, the flimsy defect of torus, carries
For it is a kind of be unlikely to deform, the tower-crane torque limiter that overall structure is firm.
To achieve the above object, the technical scheme that the utility model is provided is as follows：A kind of tower-crane torque limiter, including post
Shape body, the column are sequentially provided with the test chamber being mutually communicated, accommodating chamber and pilot hole from upper end to lower end；Also include pressure measurement
Component, manometric module by pressure measurement plate and guide post group into, wherein, pressure measurement plate is located in test chamber, and on pressure measurement plate with accommodating chamber
It is provided with multiple diaphragm pressure sensors on opposite side, and guide rod one end and pressure measurement plate downside Joint, the other end
The first pull bar is connected with after stretching out in column through pilot hole；Adjustable plate is actively provided with the guide rod, and is located at post
Below shape body；Spring is arranged with the guide rod, the spring one end is against pressure measurement plate downside, and the other end is against accommodating chamber
Bottom surface；The test chamber upper end is provided with the shrouding with column mates, and the second pull bar is connected with the middle part of the shrouding；It is described
Spring, which is pressurized, makes the pressure sensor contacts test chamber bottom surface on pressure measurement plate and output pressure signal.Limiter of moment is installed to tower
Behind the force part hung, in the case of under tension, the first pull bar drives the movement of pressure measurement plate, compression spring and close test chamber
Bottom surface, the diaphragm pressure sensor on pressure measurement plate is under pressure and send pressure signal to processor, so as to the super negative of tower crane
Lotus runs the processing for being stopped or being limited operation, to reach the effect for ensureing safe operation.Due to being passed using diaphragm pressure
Sensor, early warning can be carried out with multiple spot, equipment is not caused maloperation when running.
Further, oil transportation hole is provided with circumference in the middle part of the column, the outlet pilot hole in the oil transportation hole.
Further, in addition to lubricating structure, the lubricating structure include telescopic oil conservator, support bar and bending knot
The oil pressing rod of structure, the oil conservator are fixed in the porch in oil transportation hole；The support bar is affixed on the cylinder and to be located at oil storage
Below device；The oil pressing rod is rotatablely connected with support bar, and the oil pressing rod rotates extruding oil conservator to pilot hole oil spout.
Further, it is provided with the through hole being engaged with the second pull bar in the middle part of the shrouding.
Further, the annular protrusion being engaged with detection cavity wall is provided with the shrouding downside.
Further, the groove for placing seal is provided with the annular protrusion circumference.
Further, the diaphragm pressure sensor is four, and is evenly distributed on and surveys at platen edge.
Further, the pilot hole lower end is provided with seal groove, and lippacking is provided with the seal groove.
Further, it is provided with threading hole on second pull bar.
Further, the locking nut for locking adjustable plate is cased with the guide rod.
Usefulness of the present utility model is：Pressure signal collection is carried out using diaphragm pressure sensor and transmitted, is reacted
Speed is fast, and tower crane, which transfinites, to be prevented in time；Using spring as return unit, the generation of deformation is avoided；Column upper end
There is sealing structure with lower end, there is protective action, can protect sensing element not by the destruction corroded；Provided with lubricating machine
Structure so that slip of the guide rod in pilot hole is more flexible, and overall structure is simple, is swift in response, service life length.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation of the utility model shrouding；
Fig. 3 is Fig. 1 top view；
Fig. 4 is the utility model diaphragm pressure sensor distribution schematic diagram.
In figure, 1, column, 101, test chamber, 102, accommodating chamber, 103, oil transportation hole, 104, seal groove, 2, manometric module,
201st, pressure measurement plate, 202, guide rod, 3, diaphragm pressure sensor, 4, spring, 5, adjustable plate, 6, locking nut, 7, shrouding, 8,
One pull bar, the 9, second pull bar, 10, oil conservator, 11, support bar, 12, oil pressing rod, 13, lip-type packing.
Embodiment
Below in conjunction with the accompanying drawings and preferred embodiment is further described with regard to the technical solution of the utility model.
As Figure 1-Figure 4, a kind of tower-crane torque limiter, including column 1, the column 1 is from upper end to lower end
It is sequentially provided with the test chamber 101 being mutually communicated, accommodating chamber 102 and pilot hole；Also include manometric module 2, manometric module 2 is by pressure measurement
Plate 201 and formed with the guide rod 202 of the Joint of pressure measurement plate 201, guide rod 202 is that light bar segment and thread segment form, wherein spiral shell
Line section is to stretch out in column lower end, guide rod 202 perpendicular to pressure measurement plate 201, wherein, pressure measurement plate 201 is located at test chamber 101
In, and the diameter of pressure measurement plate is more than the diameter of accommodating chamber so that the downside of pressure measurement plate 201 can reliably contact accommodating chamber 102
Bottom surface, and the one end of guide rod 202 and the lower surface of pressure measurement plate 201 are welded, and the other end is welded with the first pull bar after passing through pilot hole
8；Four diaphragm pressure sensors 3 are provided with the pressure measurement plate 201 on the side opposite with accommodating chamber 102, and are located at pressure measurement
The marginal position of plate 201；Adjustable plate 5 is actively provided with the guide rod 202, adjustable plate 5 passes through screw thread and the spiral shell of guide rod 202
Line section coordinates, and is regulation reaction sensitivity, in order to prevent for adjusting the distance between pressure measurement plate 201 and the bottom surface of accommodating chamber 102
Adjustable plate 5 is moved, and locking nut 6 is also arranged with the thread segment of guide rod 202, avoids adjustable plate 5 from arbitrarily moving.It is described to lead
Spring 4 is cased with to bar 202, and one end of spring 4 is resisted against the downside of pressure measurement plate 201, one end is resisted against the bottom of accommodating chamber 102
Face, when spring 4 is compressed, all it is housed in accommodating chamber 102, pressure measurement plate 201 will not be caused to contact the bottom of test chamber 101 downwards
It is obstructed during face.The outside of test chamber 101 is provided with the shrouding 7 being engaged with column 1, and shrouding 7 is tight by soket head cap screw
Gu on column 1, and the annular protrusion being engaged with the inwall of test chamber 101 is additionally provided with the lower surface of shrouding 7, and in annular
The groove for placing seal is provided with raised outer circumference face, after shrouding 7 is fastened on column 1, test chamber 101 passes through
Seal carries out waterproof sealing, can prevent from, because rainy or humidity causes moisture content to enter in test chamber 101, avoiding inside
Detecting element is corroded or damaged, wherein, seal can use the polytetrafluoroethylene (PTFE) of O-ring or square-section can be with
Play sealing function.The middle part of shrouding 7 is connected with the second pull bar 9, and the second pull bar 9 passes through shrouding 7；The stress of first pull bar 8
The compression spring 4 of pressure measurement plate 201 is driven afterwards and is moved to the bottom surface of test chamber 101, believes the compression output pressure of diaphragm pressure sensor 3
Number；And processor is transferred signals to by signal wire, processor can also be taken according to the different pressures signal value received
Different measures prevents the overload operation of tower crane.When not being stressed, spring 4, which is in free state, makes pressure measurement plate 201 remote
The bottom surface of test chamber 101, avoid because vibration causes diaphragm pressure sensor 3 to produce error signal.
The further preferred scheme of the present embodiment, is provided with oil transportation hole 103 on the middle part circumference of column 1, and oil transportation hole 103
Outlet pilot hole；Lubricating structure is additionally provided with, the lubricating structure includes telescopic oil conservator 10, support bar 11 and bending knot
The oil pressing rod 12 of structure, the oil conservator 10 are fixed in the porch in oil transportation hole 103, and the oil-out of oil conservator 10 is provided with nozzle, when
Oil conservator 10 can spray lubricating oil when being extruded；The support bar 11 is located at the lower section of oil conservator 10, and is fixed in post by one end
On shape body 1, and the kink of oil pressing rod 12 is rotatablely connected with support bar 11, and the lower end of oil pressing rod 12 is rotatably connected on the first pull bar
On 8, when the first 8 under tension of pull bar, move down so as to drive oil pressing rod 12 to be rotated centered on kink, so that
Oil pressing rod 12 rotates frictional force after extruding oil conservator 10 adds lubricating oil to pilot hole oil spout, in pilot hole and reduced, every time by
Reaction is rapider during pulling force, eliminates the influence come due to resistance band such as frictional force.
The further preferred scheme of the present embodiment, seal groove 104 is provided with pilot hole lower end, lip is installed in seal groove 104
Shape sealing ring 13, can effectively protect outside inside can also prevent that lubricating oil loss is too fast so that profit is constantly in pilot hole
Sliding state.
The further preferred scheme of the present embodiment, threading hole is provided with the second pull bar 9, for through signal wire, and in signal
Line passes position and is provided with waterproof pad.
The operation principle of the present embodiment is：Limiter of moment is typically mounted on the main limb of the main limb in front or rear of tower cap,
The fixing point second pull bar 9 being fixed on main limb, and the first pull bar 8 is fixed on to the stress point on main limb, the one of signal wire
End is connected to diaphragm pressure sensor 3 by the threading hole on the second pull bar 9, and the other end is connected to processor.When torque limits
After device receives the deformation pressure of main limb, for manometric module 2 therein under the drive of deformation power, compression spring 4 simultaneously makes pressure measurement plate 201
It is close with the bottom surface of test chamber 101, so that the diaphragm pressure sensor 3 on pressure measurement plate 201 is by pressure measurement plate 201 and test chamber
Pressure between 101 bottom surfaces, pressure conversion is then sent to processor in pressure signal.When processor receives tower crane lifting
Corresponding to weight during pressure value, different measures is taken, when reaching the 95% of rated weight, sends acousto-optic early warning；Reach
Rated weight 100% when, send sound and light alarm prompting；When reaching the 105% of rated weight, tower crane is automatically cut off to danger side
To the control circuit of operation, but allow to run to safe direction, so as to reach the purpose of safeguard protection.And each limiter of moment
During work, i.e., under tension when, lubricating structure can into pilot hole lubricating oil spraying so that the first pull bar 8 is in pilot hole
The mobile frictional force with very little, it is rapider in the reaction of tower crane overload operation, further increase safe effect.
In description of the present utility model, it is to be understood that term " first ", " second ", " upper end ", " lower end " etc. are only
For descriptive purposes, and it is not intended that instruction or hint relative importance or the implicit number for indicating indicated technical characteristic
Amount.Explanation is needed further exist for, the utility model can not only be used such as the longitudinal direction that figure is placed, horizontal can also used, no
It is limited to orientation expressed in figure.
Above-described is only principle of the present utility model and preferred embodiment.It should be pointed out that the common skill to this area
For art personnel, on the premise of the utility model principle is not departed from, moreover it is possible to make some variations and modifications, should be regarded as belonging to yet
In the scope of protection of the utility model.
Claims (10)
- A kind of 1. tower-crane torque limiter, it is characterised in that：Including column, the column is sequentially provided with from upper end to lower end Test chamber, accommodating chamber and the pilot hole being mutually communicated；Also include manometric module, manometric module by pressure measurement plate and guide post group into, Wherein, pressure measurement plate is located in test chamber, and multiple diaphragm pressure sensings are provided with side opposite with accommodating chamber on pressure measurement plate Device, and guide rod one end and pressure measurement plate downside Joint, the other end are connected with first after stretching out in column through pilot hole Pull bar；Adjustable plate is actively provided with the guide rod, and below column；Spring is arranged with the guide rod, should Spring one end is against pressure measurement plate downside, and the other end is against the bottom surface of accommodating chamber；The test chamber upper end is provided with and column The shrouding being engaged, the shrouding middle part are connected with the second pull bar；The spring, which is pressurized, connects the pressure sensor on pressure measurement plate Touch test chamber bottom surface and output pressure signal.
- 2. tower-crane torque limiter according to claim 1, it is characterised in that：It is provided with the middle part of the column on circumference defeated Oilhole, the outlet pilot hole in the oil transportation hole.
- 3. tower-crane torque limiter according to claim 2, it is characterised in that：Also include lubricating structure, the lubricating machine Structure includes the oil pressing rod of telescopic oil conservator, support bar and bending structure, and the oil conservator is fixed in the porch in oil transportation hole； The support bar is affixed on the cylinder and below oil conservator；The oil pressing rod is rotatablely connected with support bar, the oil pressing rod Extruding oil conservator is rotated to pilot hole oil spout.
- 4. tower-crane torque limiter according to claim 1, it is characterised in that：It is provided with and the second pull bar in the middle part of the shrouding The through hole being engaged.
- 5. tower-crane torque limiter according to claim 4, it is characterised in that：It is provided with and examines on the shrouding downside Survey the annular protrusion that cavity wall is engaged.
- 6. tower-crane torque limiter according to claim 5, it is characterised in that：It is provided with and is used on the annular protrusion circumference Place the groove of seal.
- 7. tower-crane torque limiter according to claim 1, it is characterised in that：The diaphragm pressure sensor is four, And it is evenly distributed on and surveys at platen edge.
- 8. tower-crane torque limiter according to claim 1, it is characterised in that：The pilot hole lower end is provided with seal groove, Lippacking is installed in the seal groove.
- 9. according to the tower-crane torque limiter described in claim 4~6 any one, it is characterised in that：On second pull bar It is provided with threading hole.
- 10. tower-crane torque limiter according to claim 9, it is characterised in that：It is cased with being used to lock on the guide rod The locking nut of adjustable plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720548722.XU CN206767480U (en) | 2017-05-17 | 2017-05-17 | A kind of tower-crane torque limiter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720548722.XU CN206767480U (en) | 2017-05-17 | 2017-05-17 | A kind of tower-crane torque limiter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206767480U true CN206767480U (en) | 2017-12-19 |
Family
ID=60640541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720548722.XU Expired - Fee Related CN206767480U (en) | 2017-05-17 | 2017-05-17 | A kind of tower-crane torque limiter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206767480U (en) |
-
2017
- 2017-05-17 CN CN201720548722.XU patent/CN206767480U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171219 Termination date: 20180517 |