CN204162332U - A kind of boom crane - Google Patents
A kind of boom crane Download PDFInfo
- Publication number
- CN204162332U CN204162332U CN201420551669.5U CN201420551669U CN204162332U CN 204162332 U CN204162332 U CN 204162332U CN 201420551669 U CN201420551669 U CN 201420551669U CN 204162332 U CN204162332 U CN 204162332U
- Authority
- CN
- China
- Prior art keywords
- boom
- load cells
- cantilever beams
- tie
- column
- 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.)
- Expired - Fee Related
Links
Landscapes
- Jib Cranes (AREA)
Abstract
The utility model relates to a kind of boom crane, comprise column, cantilever beams and the walking walking dolly in described cantilever beams, also comprise the LOAD CELLS of the lifting weight for measuring walking dolly, be provided with boom tie between described cantilever beams and described column, described LOAD CELLS is arranged on the junction of described boom tie and column or is arranged on the junction of described boom tie and cantilever beams; Or described boom tie comprises two joints, two joint boom ties are serially connected by described LOAD CELLS.The steel rope of not following walking dolly due to LOAD CELLS moves, and the data line of LOAD CELLS, without the need to lengthening, which simplifies wiring, improves lifting weight measurement accuracy and the safety and reliability of boom crane, avoid the generation of safety misadventure.
Description
Technical field
The utility model relates to a kind of weight-lifting equipment, particularly a kind of boom crane.
Background technology
Boom crane is middle-size and small-size hoisting equipment, and its structure is unique, safe and reliable, and possess the features such as efficient, energy-conservation, time saving and energy saving, flexible, especially in the occasion of section apart from the allocation and transportation of, intensive, than other routinely handling appliance have more preceence, be thus used widely.Existing boom crane as shown in Figure 1, comprise fixed bearing 1 and electric block, the upper end of fixed bearing is rotated and is provided with column 2, the lower end of column is installed with the cantilever beams 3 extended in left-right direction, boom tie 4 is provided with above cantilever beams, one end of boom tie is installed in the upper end of column, and the other end of boom tie is installed in cantilever beams.The walking dolly 5 that electric block comprises electric block body 6 and is installed on electric block body 6, walking dolly 5 is walked in above-mentioned cantilever beams 3 under the driving of electric power.
In use, walking dolly drives electric block body sway in cantilever beams, after arriving the assigned address of lifting, electric block body starts lifting, rated load weight due to boom crane is subject to the restriction of moment, electric block is the closer to the right-hand member of cantilever beams, and the weight of its lifting allowed is less.But in practical operation; because cantilever beams span is large; and existing boom crane lacks lifting weight limits device; cannot monitor whether exceed its amount load in the lifting weight at cantilever beams diverse location place in the process of electric block walking; operating personal is merely able to when lifting operation judge by rule of thumb, and so frequent meeting causes damage and the safety misadventure of boom crane because of overload operation.
In order to solve the problem; lifting weight limits device need be set on boom crane; as disclosed a kind of safety guard in Chinese patent literature CN101343023B; comprise the apomecometer for measuring the position of coaster on arm, for the supratrochlear hoist cable of perception hang the LOAD CELLS of thing weight and the interior load limiter establishing micro controller system, load limiter is connected with power-supply controller of electric with apomecometer, LOAD CELLS respectively.In use, the data of suspended object weight are measured by LOAD CELLS, the data of coaster position on arm are by stadia surveying, above-mentioned two data are passed to load limiter in real time, the carried limitation that received data and the coaster be kept in its micro controller system are positioned at different boom position place contrasts by load limiter, when exceed can carry limitation time, load limiter cuts off the lifting power supply of tower crane by power-supply controller of electric, can effectively prevent overweight lifting.
But; when above-mentioned safety guard is applied on boom crane; because LOAD CELLS is arranged on a steel cord; when electric block in cantilever beams sway or when steel rope hoisting heavy rope closing time; drive LOAD CELLS sway or move up and down; the data line of such LOAD CELLS wants long enough to meet the movement requirement of LOAD CELLS, thus causes wiring complicated, affects the attractive in appearance of boom crane.And longer data line is easy to together with wirerope-winding, make, during the reel Wound steel rope of electric block, wiring occurs chaotic, affect normal lifting operation, also the reliability of the take off data of LOAD CELLS can be caused to reduce because of pulling LOAD CELLS, and then cause potential safety hazard.
Summary of the invention
The purpose of this utility model is to provide a kind of boom crane that can simplify boom crane wiring, improve the accuracy of measurement of lifting weight.
For achieving the above object, the utility model adopts following technical scheme: a kind of boom crane, comprise column, cantilever beams and the walking walking dolly in described cantilever beams, also comprise the LOAD CELLS of the lifting weight for measuring walking dolly, be provided with boom tie between described cantilever beams and described column, described LOAD CELLS is arranged on the junction of described boom tie and column or is arranged on the junction of described boom tie and cantilever beams; Or described boom tie comprises two joints, two joint boom ties are serially connected by described LOAD CELLS.
Described boom crane also comprises travel switch for measuring walking dolly position or proximity switch, and travel switch or proximity switch are arranged in the middle part of described cantilever beams.
Described boom crane also comprises load limiter, and this load limiter is display and control instrument of weighing.
The shape of described LOAD CELLS is tabular, and two ends, the left and right correspondence of LOAD CELLS is provided with two mounting holes, and the middle part of LOAD CELLS is the strain regions for installing resistance strain gage.
The utility model is by being arranged on the junction of boom tie and column or being arranged on the junction of boom tie and cantilever beams by LOAD CELLS, or boom tie comprises two joints, LOAD CELLS is serially connected between two joint boom ties, like this when cantilever beams is stressed, cantilever beams pulls boom tie, the power be subject to directly is passed LOAD CELLS by boom tie, LOAD CELLS can monitor stressing conditions during boom crane lifting more delicately, and the steel rope of not follow on walking dolly due to LOAD CELLS moves, the data line of LOAD CELLS is without the need to lengthening, which simplifies wiring.When hoisting heavy, steel rope can not with the data line generation wrapping phenomena of LOAD CELLS, the generation of disorder cable phenomenon when avoiding Wound steel rope, improves lifting weight measurement accuracy and the safety and reliability of boom crane, avoids the generation of safety misadventure.
Further, the utility model adopts travel switch or proximity switch to measure the position of walking dolly, is conducive to reducing cost of product.Travel switch or proximity switch are also arranged in the middle part of cantilever beams by the utility model, cantilever beams is just divided into left and right two sections of monitored areas by such travel switch or proximity switch, when walking dolly is through travel switch or proximity switch place, travel switch or proximity switch send signal, realize the monitoring to walking dolly present position in cantilever beams.
Further, boom crane of the present utility model also comprises load limiter, this load limiter is display and control instrument of weighing, the plug-in of display and control instrument of weighing can start different control programs according to the signal of travel switch or proximity switch, this just can realize in the process of carriage walking of walking, monitor the object whether exceeding its amount load in the lifting weight at cantilever beams diverse location place with LOAD CELLS jointly, thus actv. prevents the violation operation behavior of operating personal and actv. from avoiding safety misadventure.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing boom crane;
Fig. 2 is the structural representation of a kind of embodiment of boom crane of the present utility model;
Fig. 3 is the connection diagram of LOAD CELLS in Fig. 2, travel switch and display and control instrument of weighing.
In figure, each Reference numeral name is called: 1 fixed bearing, 2 columns, 3 cantilever beams, 4 boom ties, 5 walking dollies, 6 electric block bodies, 7 LOAD CELLS, 8 travel switches, and 9 weigh display and control instrument.
Detailed description of the invention
A kind of boom crane as Figure 2-3, comprise fixed bearing 1 and electric block, the upper end of fixed bearing is rotated and is provided with column 2, the lower end of column is installed with the cantilever beams 3 extended in left-right direction, the top of cantilever beams is provided with boom tie 4, the left end of boom tie is installed in the upper end of column, and the right-hand member of boom tie is installed in cantilever beams.Above-mentioned electric block is walked in above-mentioned cantilever beams by the walking dolly on it.
Above-mentioned boom crane also comprises the LOAD CELLS 7 of the lifting weight for measuring electric block, load limiter and the travel switch for measuring electric block position, and load limiter is connected by data line with travel switch with LOAD CELLS respectively.
In order to reduce costs, above-mentioned load limiter is display and control instrument 9 of weighing.Above-mentioned travel switch 8 is arranged on the middle part of cantilever beams.Certainly in other embodiments, load limiter establishes the controller of micro controller system in can also being, travel switch can also replace with proximity switch.Above-mentioned travel switch or proximity switch can select according to the field condition of field of employment the assigned address being arranged on cantilever beams.
In the present embodiment, the shape of LOAD CELLS 7 is tabular, and two ends, the left and right correspondence of LOAD CELLS is provided with two mounting holes, and the middle part of LOAD CELLS is the strain regions for installing resistance strain gage.Above-mentioned boom tie is divided into two joints, and two joint boom ties are serially connected respectively by the mode of bolted splice by two, the left and right mounting hole of above-mentioned LOAD CELLS.Because the strain regions of LOAD CELLS 7 is arranged in the middle, meanwhile, the setting of two mounting holes makes LOAD CELLS after installation is complete, and the deformation direction of its strain regions is identical with boom tie Impact direction, this provides for improved the accuracy of measurement of LOAD CELLS.Moreover the structure of LOAD CELLS 7 is simple, is convenient to produce in enormous quantities, reduces production and processing cost.Certainly, in other embodiments, above-mentioned LOAD CELLS can also be the resistance-strain chip LOAD CELLS of other shape, and as S shape, the head and the tail two ends of S shape save that boom tie is corresponding to be connected respectively with two.In other embodiments, above-mentioned boom tie can also be divided into more than two joints.In other embodiments, above-mentioned LOAD CELLS can also be arranged on the junction of boom tie and column, or is arranged on the junction etc. of cantilever beams and boom tie.
LOAD CELLS 7 is connected with display and control instrument 9 of weighing respectively by data line with travel switch 8, and display and control instrument of weighing is connected with the relay that hoists of electric block by data line.
Principle of work of the present utility model: because cantilever beams span is larger, about cantilever beams, the permission lifted load of two sections is different, cantilever beams 3 is divided into left and right two sections of monitored areas by the travel switch be arranged in the middle part of cantilever beams, carry out Discrete control to cantilever beams respectively, the built-in control program of display and control instrument of namely weighing arranges different maximum lifted loads to left and right two sections of monitored areas respectively.When walking dolly travels left section of monitored area, travel switch can not be touched, and now, the control program of the correspondence left section of monitored area of display and control instrument of weighing starts.When walking dolly 5 enters right section of monitored area through left section of monitored area, walking dolly touches travel switch, and signal transmission to display and control instrument of weighing, thus is triggered the control program of correspondence right section of monitored area of display and control instrument of weighing by travel switch.
The operating handle of user's manual manipulation electric block declines the suspension hook of electric block, LOAD CELLS 7 is passed to through suspension hook, walking dolly, cantilever beams successively by the weight of hanging piece, the weight signal collected is delivered to display and control instrument of weighing by LOAD CELLS 7, display and control instrument of weighing calculates lifting weight, when electric hoist overload, display and control instrument of weighing output signal disconnects the relay that hoists, and forbids electric block hoisting heavy.When electric block does not overload, then allow electric block hoisting heavy, thus realize preventing boom crane from lifting by crane the object of overload.
Claims (4)
1. a boom crane, comprise column, cantilever beams and the walking walking dolly in described cantilever beams, also comprise the LOAD CELLS of the lifting weight for measuring walking dolly, it is characterized in that: be provided with boom tie between described cantilever beams and described column, described LOAD CELLS is arranged on the junction of described boom tie and column or is arranged on the junction of described boom tie and cantilever beams; Or described boom tie comprises two joints, two joint boom ties are serially connected by described LOAD CELLS.
2. a kind of boom crane according to claim 1, is characterized in that: described boom crane also comprises travel switch for measuring walking dolly position or proximity switch, and travel switch or proximity switch are arranged in the middle part of described cantilever beams.
3. a kind of boom crane according to claim 1, is characterized in that: described boom crane also comprises load limiter, and this load limiter is display and control instrument of weighing.
4. a kind of boom crane according to any one of claim 1-3, it is characterized in that: the shape of described LOAD CELLS is tabular, two ends, the left and right correspondence of LOAD CELLS is provided with two mounting holes, and the middle part of LOAD CELLS is the strain regions for installing resistance strain gage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420551669.5U CN204162332U (en) | 2014-09-24 | 2014-09-24 | A kind of boom crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420551669.5U CN204162332U (en) | 2014-09-24 | 2014-09-24 | A kind of boom crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204162332U true CN204162332U (en) | 2015-02-18 |
Family
ID=52536042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420551669.5U Expired - Fee Related CN204162332U (en) | 2014-09-24 | 2014-09-24 | A kind of boom crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204162332U (en) |
-
2014
- 2014-09-24 CN CN201420551669.5U patent/CN204162332U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203295034U (en) | Lifting hook, winding plant, crane and crane deviation early-warning device | |
| CN101881001B (en) | Cradle stress and deformation early warning system | |
| CN104326379A (en) | Safety monitoring tower crane | |
| CN204022330U (en) | A kind of crane hook inhibiting device | |
| CN201971576U (en) | Moment limiting device and tower crane with same | |
| CN203359865U (en) | Moment limiting system and tower crane with same | |
| CN102412532B (en) | Overhead line pulley device | |
| CN203667837U (en) | Lifting angle limiter | |
| CN204162332U (en) | A kind of boom crane | |
| CN205328478U (en) | Heavy balanced tower crane | |
| CN203319442U (en) | Rope breakage protection device of construction lift | |
| CN203159068U (en) | Main hook hoisting device of crawler crane in working condition of tower | |
| CN201228181Y (en) | Detection apparatus of hanging basket hoisting machine | |
| CN103171973A (en) | Main hook hoisting method under tower type work condition of crawler crane | |
| CN103420240A (en) | Intelligent type tensile force warning device | |
| CN105836650A (en) | Electric hoist with weighing function | |
| CN205419597U (en) | Cantilever crane | |
| CN202944977U (en) | Hoisting tool of cable | |
| CN204218812U (en) | A kind of window cleaning machine hanging basket overload protection device | |
| CN205224626U (en) | Steel platform of unloading | |
| CN201801819U (en) | Stress and deformation early-warning system for hanging basket | |
| CN203624863U (en) | Novel bridge crane with double alarms | |
| CN201626777U (en) | Comprehensive safety protection device of hoisting equipment | |
| CN202124433U (en) | Weighing system of wireless data transmission intelligent crown block | |
| CN202393534U (en) | Tension sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150218 Termination date: 20150924 |
|
| EXPY | Termination of patent right or utility model |