CN209337999U - A kind of guide wheel heavy hammer type lifting limiter - Google Patents
A kind of guide wheel heavy hammer type lifting limiter Download PDFInfo
- Publication number
- CN209337999U CN209337999U CN201822185318.8U CN201822185318U CN209337999U CN 209337999 U CN209337999 U CN 209337999U CN 201822185318 U CN201822185318 U CN 201822185318U CN 209337999 U CN209337999 U CN 209337999U
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- guide wheel
- limit switch
- wheel weight
- apical axis
- fixed
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Abstract
The utility model relates to a kind of guide wheel heavy hammer type lifting limiters, including guide wheel weight, connection rod set, connecting steel wire ropes, apical axis, spring and limit switch, guide wheel weight is set on the hoist rope of lifting mechanism, limit switch is fixed by the bracket on lifting mechanism, apical axis upper end cooperates after passing through the spring being fixed on bracket with limit switch, apical axis lower end sets connecting steel wire ropes, and guide wheel weight is connect by connection rod set with connecting steel wire ropes.Limit switch is separated with guide wheel weight and is individually fixed in lifting mechanism rack by the utility model; avoid shock of the limit switch with guide wheel weight by suspension hook; effective protection limit switch prevents from being caused limit to be failed by shock damage; limit switch is avoided to hang together with guide wheel weight and as guide wheel weight is swung; facilitate the connecting cable of arrangement and fixed limit switch and electric control system simultaneously; it prevents cable because of connection loosening caused by being pullled, being corroded and circuit disconnection, limit is caused to be failed.
Description
Technical field
The utility model relates to raisings to limit technical field, and in particular to a kind of guide wheel heavy hammer type lifting limiter.
Background technique
The lifting limiter of crane is the important safety device of crane, it can effectively limit hoist rope and
Suspension hook rises above maximum, prevents the serious safe thing for rushing on suspension hook and hitting pulley, even going out pulley
Therefore.Heavy hammer type lifting limiter is a kind of common lifting limiter, since its simple structure, convenient control is reliable, existing
It is used widely on crane.
But existing heavy hammer type lifting limiter have the following deficiencies: first is that inductive switch be connected on weight and with
Collision block is directly hit, and the enormous impact shock effect for hitting generation is easily damaged inductive switch；Second is that inductive switch and weight one
It rises and hangs on cantilever crane head and swung with weight, thus need to connect from cantilever crane head on a cable to inductive switch, weight
When swing, cable is easier to be stained with the lubricating grease of wirerope and be corroded；Third is that inductive switch hangs with weight and often generates
It swings, be easy to make the connection of inductive switch and cable loosening or be damaged and circuit is caused to disconnect, limiter is made to fail.Thus, it is existing
Inductive switch, cable and the connection circuit of some heavy hammer type lifting limiters are easy to damage because hitting or corroding, and cause to limit
Device failure, thus need to regularly replace cable and inductive switch, significantly increase the use and maintenance cost of crane.
Utility model content
For the deficiency in the presence of the prior art, the utility model provides a kind of guide wheel heavy hammer type lifting limiter,
Limit switch and weight are installed separately, while preventing limit switch from swinging with weight, avoid because hit etc. external force because
Element causes limit switch to fail or damage.
To achieve the above object, the utility model uses the following technical solution: a kind of guide wheel heavy hammer type lifting limit
Device, including guide wheel weight, connection rod set, connecting steel wire ropes, apical axis, spring and limit switch, guide wheel weight are set in lifting mechanism
Hoist rope on, limit switch is fixed by the bracket on lifting mechanism, and apical axis upper end passes through the bullet that is fixed on bracket
Cooperate after spring with limit switch, apical axis lower end sets connecting steel wire ropes, and guide wheel weight is connect by connection rod set with connecting steel wire ropes.Just
Under normal working condition, guide wheel weight relies on self gravity, is held apical axis downwards to the conduction of power by connection rod set and wirerope,
Limit switch is contactless with apical axis.
Further, fixed block is set on bracket, spring is fixed in fixed block and can stretch in fixed block.
Further, apical axis sequentially passes through fixed block, spring from fixed block bottom, and the upper end of apical axis is set and limit switch
The umbrella spindle nose of sensing part cooperation, the apical axis below fixed block are equipped with stop collar.Under normal operating conditions, guide wheel weight
For apical axis by umbrella spindle nose by spring-compressed, umbrella spindle nose and limit switch are contactless.
Further, connection rod set includes first connecting rod and second connecting rod, one end of first connecting rod and one end of second connecting rod
It is connect with connecting steel wire ropes, the other end of first connecting rod and the other end of second connecting rod connect with the both ends of guide wheel weight respectively
It connects.
Compared with the prior art, the utility model has the following beneficial effects:
1, limit switch and guide wheel weight are installed separately, limit switch is avoided to be hit with guide wheel weight by suspension hook
It hits, effective protection limit switch prevents from being caused limit to be failed by shock damage.
2, limit switch is individually fixed in lifting mechanism rack, avoids limit switch and is hung together with guide wheel weight
And as guide wheel weight is swung, while facilitating the connecting cable of arrangement and fixed limit switch and electric control system, prevents
Cable causes limit to be failed because of connection loosening caused by being pullled, being corroded and circuit disconnection.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model；
Appended drawing reference: 1- guide wheel weight；2- lifting mechanism；3- connecting steel wire ropes；4- apical axis；5- spring；6- limit switch；
7- bracket；8- umbrella spindle nose；9- first connecting rod；10- second connecting rod；11- fixed block；12- stop collar；13- fixed pulley；14- rises
Rise wirerope；15- suspension hook.
Specific embodiment
The utility model is described further with reference to the accompanying drawing.
As shown in Figure 1, a kind of guide wheel heavy hammer type lifting limiter, it is characterised in that: including guide wheel weight 1, connection rod set, company
Wirerope 3, apical axis 4, spring 5 and limit switch 6 are connect, guide wheel weight 1 is set on the hoist rope of lifting mechanism, and limit is opened
It closes 6 to be fixed on lifting mechanism by bracket 7,4 upper end of apical axis is matched after passing through the spring 5 being fixed on bracket 7 with limit switch 6
It closes, 4 lower end of apical axis sets connecting steel wire ropes 3, and guide wheel weight 1 is connect by connection rod set with connecting steel wire ropes 3.
Fixed block 11 is set on bracket 7, spring 5 is fixed in fixed block 11 and can stretch in fixed block 11.
Apical axis 4 sequentially passes through fixed block 11, spring 5 from 11 bottom of fixed block, and the upper end of apical axis 4 is set and limit switch 6
The apical axis 4 of the umbrella spindle nose 8 of sensing part cooperation, 11 lower section of fixed block is equipped with stop collar 12.The basal diameter of umbrella spindle nose 8
Greater than 5 central diameter of spring, with guarantee umbrella spindle nose 8 can pressing spring 5, while realizing that limit prevents apical axis 4 from falling downwards.Limit
For ring 12 for limiting, the amplitude for preventing apical axis 4 from moving upwards under the active force of spring 5 is excessive, causes apical axis 4 to limit switch
6 damage.
Connection rod set includes first connecting rod 9 and second connecting rod 10, one end of one end of first connecting rod 9 and second connecting rod 10 with
Connecting steel wire ropes 3 connect, and the other end of first connecting rod 9 and the other end of second connecting rod 10 connect with the both ends of guide wheel weight 1 respectively
It connects.Connecting steel wire ropes 3 are fixed using rope clamp matched with wirerope, guide wheel weight 1 select in the prior art both ends with through-hole
Weight in the through-hole that first connecting rod 9 and second connecting rod 10 are respectively penetrated to 1 two ends of guide wheel weight, and uses plain washer
And split pin fixation prevents from falling off.
The working principle of the utility model are as follows:
Under normal operating conditions, guide wheel weight relies on self gravity, the conduction by connection rod set and connecting steel wire ropes to power
Apical axis to be held downwards, for apical axis by spring-compressed, limit switch is contactless with apical axis,.
When fixed pulley 13 recycles 14 raising of hoist rope, when suspension hook 15 rises to upper limit position, suspension hook 15 will be led
It takes turns weight 1 to jack up, apical axis 4 is caused to be no longer influenced by downward pulling force, at this moment spring 5 jacks up apical axis 4 through umbrella spindle nose 8 upwards,
And then contacting apical axis 4 with limit switch, electric control system signal is given in limit switch movement, and electric control system issues
Signal powers off driving motor, while brake brakes, and fixed pulley 13 stops operating, and suspension hook 15 is made not continue to elevator
Row, lifting mechanism is merely able to carry out step-down operation at this time, wherein the letter between limit switch, driving motor and electric control system
Number transmitting belongs to the prior art.
Finally, it is stated that above embodiments are merely intended for describing the technical solutions of the present application, but not for limiting the present application, although ginseng
The utility model is described in detail according to preferred embodiment, those skilled in the art should understand that, it can be to this
The technical solution of utility model is modified or replaced equivalently, without departing from the objective and model of technical solutions of the utility model
It encloses, should all cover in the scope of the claims of the utility model.
Claims (4)
1. a kind of guide wheel heavy hammer type lifting limiter, it is characterised in that: including guide wheel weight (1), connection rod set, connecting steel wire ropes
(3), apical axis (4), spring (5) and limit switch (6), guide wheel weight (1) are set on the hoist rope of lifting mechanism, limit
Switch (6) is fixed on lifting mechanism by bracket (7), after apical axis (4) upper end passes through the spring (5) being fixed on bracket (7)
Cooperate with limit switch (6), apical axis (4) lower end sets connecting steel wire ropes (3), guide wheel weight (1) by connection rod set with connect steel wire
Rope (3) connection.
2. a kind of guide wheel heavy hammer type lifting limiter as described in claim 1, it is characterised in that: bracket sets fixed block on (7)
(11), spring (5) is fixed in fixed block (11) and can stretch in fixed block (11).
3. a kind of guide wheel heavy hammer type lifting limiter as claimed in claim 2, it is characterised in that: apical axis (4) is from fixed block
(11) bottom sequentially passes through fixed block (11), spring (5), and the upper end of apical axis (4) is set to be cooperated with the sensing part of limit switch (6)
Umbrella spindle nose (8), the apical axis (4) below fixed block (11) is equipped with stop collar (12).
4. a kind of guide wheel heavy hammer type lifting limiter as described in claim 1, it is characterised in that: connection rod set includes first connecting rod
(9) it is connect with connecting steel wire ropes (3) with second connecting rod (10), one end of first connecting rod (9) and one end of second connecting rod (10),
The other end of first connecting rod (9) and the other end of second connecting rod (10) are connect with the both ends of guide wheel weight (1) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822185318.8U CN209337999U (en) | 2018-12-25 | 2018-12-25 | A kind of guide wheel heavy hammer type lifting limiter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822185318.8U CN209337999U (en) | 2018-12-25 | 2018-12-25 | A kind of guide wheel heavy hammer type lifting limiter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209337999U true CN209337999U (en) | 2019-09-03 |
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ID=67758899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822185318.8U Active CN209337999U (en) | 2018-12-25 | 2018-12-25 | A kind of guide wheel heavy hammer type lifting limiter |
Country Status (1)
| Country | Link |
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| CN (1) | CN209337999U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112357767A (en) * | 2020-11-20 | 2021-02-12 | 中船华南船舶机械有限公司 | Hydraulic electric control upper limiting system of lifting hook |
| CN113772551A (en) * | 2021-09-27 | 2021-12-10 | 大连华锐重工集团股份有限公司 | Hook top punching detection device for floating crane |
-
2018
- 2018-12-25 CN CN201822185318.8U patent/CN209337999U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112357767A (en) * | 2020-11-20 | 2021-02-12 | 中船华南船舶机械有限公司 | Hydraulic electric control upper limiting system of lifting hook |
| CN113772551A (en) * | 2021-09-27 | 2021-12-10 | 大连华锐重工集团股份有限公司 | Hook top punching detection device for floating crane |
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