CN216613846U - Crane wire rope reel groove-off detection device - Google Patents
Crane wire rope reel groove-off detection device Download PDFInfo
- Publication number
- CN216613846U CN216613846U CN202123381907.1U CN202123381907U CN216613846U CN 216613846 U CN216613846 U CN 216613846U CN 202123381907 U CN202123381907 U CN 202123381907U CN 216613846 U CN216613846 U CN 216613846U
- Authority
- CN
- China
- Prior art keywords
- wire rope
- steel wire
- spring
- groove
- crane
- 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.)
- Active
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 19
- 230000007246 mechanism Effects 0.000 claims abstract description 96
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 88
- 239000010959 steel Substances 0.000 claims abstract description 88
- 238000004804 winding Methods 0.000 claims abstract description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 24
- 229910052742 iron Inorganic materials 0.000 claims description 12
- 230000001105 regulatory effect Effects 0.000 description 18
- 238000009434 installation Methods 0.000 description 6
- 230000009191 jumping Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- -1 metallurgy Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000000246 remedial effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
Landscapes
- Control And Safety Of Cranes (AREA)
Abstract
The utility model relates to a hoisting apparatus, in particular to a device for detecting the groove disengagement of a steel wire rope drum of a crane, which comprises a primary mechanism, a secondary mechanism connected with the primary mechanism, a guide rail connected with the secondary mechanism and a sensor positioned on the secondary mechanism, wherein the primary mechanism comprises a telescopic pressure rod and a first spring connected with the telescopic pressure rod, and the secondary mechanism is connected with a second spring; the utility model solves the problems that false triggering is easy to occur, and the detection mechanism is even crushed when the angle between the steel wire rope and the winding drum is large.
Description
Technical Field
The utility model relates to the field of lifting machinery, in particular to a device for detecting the groove disengagement of a steel wire rope drum of a crane.
Background
A crane operation heavy-load carrying tool is widely applied to industries such as steel, metallurgy, chemical industry, nuclear power, ports and the like, and a crane lifting tool is mainly in a transmission mode that a steel wire rope drum is adopted to drive a steel wire rope to lift, so that a clamp is driven to lift and run. In the past, the operation of the crane depends on manual operation, the rise of the automatic crane is still a matter in recent years, and besides economic factors, the maturity of technical means is also a main reason for promoting the development of the industry. Automation, reliable teaching, closed loop formation in control and detection means. Rope skiving generally means that some or all of the rope slips from the rope groove of one sheave to one side of the sheave or between the rim and the stop plate. The steel wire rope is required to be out of the groove, and two conditions are required to be met, namely the steel wire rope is loosened, the steel wire rope is separated from the center of the groove and is positioned near a rim, groove jumping of the steel wire rope usually occurs under load of a crane lifting appliance, a clamp is inverted to one side, the incident angle of the steel wire rope is increased and under the condition of tension, and if the steel wire rope cannot be found in time after the groove is removed, the steel wire rope can be caused: the steel wire rope is damaged and scrapped, and after the groove is removed, the steel wire rope can be clamped between the pulley and the side plate of the pulley chamber. The lifting appliance is continuously lifted or dropped, and the steel wire rope is inevitably scratched; the pulley is broken, the steel wire rope carrying the heavy object has large force, and when the steel wire rope enters a pulley backlash, large lateral force is given to the pulley, so that the pulley can be damaged; the major accident is caused, after the steel wire rope bracket is supported, the steel wire rope bracket is not found and timely treated, and if the steel wire rope is broken, the unexpected accident of machine damage and casualty can be caused. The abnormal transitional wear of the steel wire rope and even the rope breakage accident can be caused, thereby causing hidden danger to the safety production and bringing unnecessary economic loss. The existing slot-off detection device is installed on the side surface of a winding drum and is easy to trigger by mistake, a grab bucket can incline when grabbing materials, and a detection mechanism can be crushed even when the angle between a steel wire rope and the winding drum is large, so that the existing detection device is not a perfect and mature detection device.
The patent of publication number CN214495535U discloses a drum pull rope groove-releasing detection device and a crane, wherein the drum pull rope groove-releasing detection device comprises a fixed support fixed by the relative position with the base of the drum, and the fixed support is connected with a mounting arm; and the detection module is arranged on the mounting arm, is opposite to the side surface of the winding drum, and is used for detecting whether the pull rope on the side surface of the winding drum opposite to the detection module is out of the groove or not, so that false triggering is easy to occur, when the grab bucket grabs materials, the grab bucket can incline, and when the angle between the steel wire rope and the winding drum is large, the detection mechanism can be crushed.
The patent with publication number CN204802876U discloses a detection device for detecting the groove separation of a steel wire rope on a winding drum of a hoisting device, wherein a first bracket and a second bracket are respectively arranged at two sides below the winding drum, a limit switch is arranged at the top of the first bracket, a pull ring is arranged at the top of the second bracket, a pull rope line is arranged between the pull ring and an elastic limit rod of the limit switch, the pull rope line is in a horizontal tensioning state under the elastic action of the elastic limit rod, and a signal end of the limit switch is connected with a controller through a signal line; can stimulate the elasticity gag lever post to the inboard slope when the stay cord receives the exogenic action to overcome the elasticity flagging of elasticity gag lever post to make limit switch signals give the controller, this utility model's advantage can in time discover wire rope and take remedial measure in time out of grooving flagging phenomenon, but easy spurious triggering, when the grab bucket grabs the material, the grab bucket can slope, and wire rope can crush detection mechanism with reel angle when big even.
SUMMERY OF THE UTILITY MODEL
The utility model provides a device for detecting the groove-releasing of a steel wire rope reel of a crane, aiming at the problems that the existing groove-releasing detection device in the prior art is arranged on the side surface of the reel and is easy to be triggered by mistake, a grab bucket can incline when the grab bucket grabs materials, and a detection mechanism can be crushed even when the angle between a steel wire rope and the reel is large.
The technical scheme adopted by the utility model is as follows:
the utility model provides a device for detecting the groove escape of a steel wire rope reel of a crane, which comprises a primary mechanism, a secondary mechanism connected with the primary mechanism, a guide rail connected with the secondary mechanism and a sensor positioned on the secondary mechanism, wherein the primary mechanism comprises a telescopic pressure rod and a first spring connected with the telescopic pressure rod, and the secondary mechanism is connected with a second spring.
Further, the distance between the compression bar and the steel wire rope winding drum is adjusted up and down by the telescopic compression bar.
Furthermore, an iron sheet for triggering the sensor is arranged on the first spring.
Furthermore, a limiting baffle is arranged on the guide rail.
Furthermore, the distance between the limiting baffle and the upper end of the secondary mechanism is larger than 100mm, the steel wire rope is prevented from jumping upwards greatly, and upward movement allowance is reserved for the secondary mechanism.
Further, the sensor is fixed at the upper end of the secondary mechanism through screws.
Furthermore, the first spring and the second spring are provided with adjusting plates for adjusting the elasticity of the springs.
Further, the primary mechanism triggering thrust is greater than 1000N.
Further, the secondary mechanism trigger thrust is greater than 3000N.
Furthermore, a limiting rod is arranged on the secondary mechanism.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model is arranged right above the winding drum, thereby preventing the false touch and having stable and reliable detection; the triggering mechanism adopts a structure of a two-stage lifting mechanism to accommodate various groove-disengaging conditions: when the steel wire rope jumps to the empty groove and the steel wire rope jumps upwards to the depth of the groove, the steel wire rope jacks up the pressure lever, the pressure lever drives the primary device to move upwards, and the trigger sensor detects and senses signals; and when the steel wire rope jumps to the groove with the steel wire rope, the steel wire rope jumps upwards by at least the height of the diameter of the steel wire rope, the steel wire rope jacks up the pressure lever, the pressure lever drives the primary device to move upwards, and the pressure lever continues to move upwards to jack the secondary mechanism upwards. The two-stage mechanism is arranged, the situation that the steel wire rope jumps upwards by at least one diameter of the steel wire rope is accommodated, the pressure of the steel wire rope, which is caused to the device, is buffered, the steel wire rope is prevented from damaging the device, each stage of mechanism is provided with a spring, the upward resistance of the mechanism is increased, and the mechanism can automatically move and reset.
Drawings
FIG. 1 is a schematic view of an elevation structure of a device for detecting the groove disengagement of a steel wire rope reel of a crane;
FIG. 2 is a schematic side view of a device for detecting the groove disengagement of a steel wire rope reel of a crane;
fig. 3 is a schematic view of a top view structure of a device for detecting the groove disengagement of a steel wire rope reel of a crane.
In the figure: the device comprises a first-level mechanism 1, a second-level mechanism 2, a guide rail 3, a sensor 4, a telescopic pressure rod 11, a first spring 12, a first adjusting plate 13, an iron sheet 14, a limiting rod 21, a second spring 22 and a limiting baffle 31.
Detailed Description
In order to clearly explain the technical features of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced in other ways than those described herein, and therefore the scope of the present application is not limited by the specific embodiments disclosed below. In addition, in the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise. In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate. In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Example 1
A device for detecting the groove disengagement of a steel wire rope reel of a crane comprises a primary mechanism 1, a secondary mechanism 2, a guide rail 3 and a sensor 4.
The primary mechanism 1 comprises a telescopic pressure lever 11 and a first spring 12 vertically connected with the telescopic pressure lever, the compressible pressure lever 11 comprises a cross rod and a vertical rod, the cross rod is in contact with the steel wire rope when the steel wire rope is out of the groove, and the vertical rod is telescopic and used for adjusting the distance between the pressure lever and the steel wire rope up and down; spring 12 upper end is equipped with regulating plate 13 of regulating spring elasticity, compresses spring 1210mm with regulating plate 13 during the installation, and the upper end of spring 12 is equipped with the iron sheet that triggers sensor 4, one-level mechanism 1 triggers thrust and is greater than 1000N.
The secondary mechanism 2 covers at the 1 back of primary mechanism, sensor 4 connects and openly just is located iron sheet 14 top at secondary mechanism 2, be equipped with on secondary mechanism 2 with horizontal pole vertically gag lever post 21, the excessive pressure of the scalable depression bar 11 of restriction, 2 back connections spring two 22 of secondary mechanism, be equipped with the regulating plate 23 of regulating spring elasticity on the spring two 22, use regulating plate 23 compression spring two 2250mm during the installation, secondary mechanism 2 triggers thrust and is greater than 3000N.
The back of guide rail 3 articulated secondary mechanism 2, guide rail 3 is double guide, guide rail 3 and secondary mechanism 2 parallel connection, secondary mechanism 2 reciprocates on guide rail 3, be equipped with limit baffle 31 on the guide rail 3, prevent the excessive pressure.
The steel wire rope groove jumping usually occurs in crane sling underload, the anchor clamps fall to one side, under the wire rope incident angle grow and receive the pulling force condition, the groove depth 15mm, jump the groove to the dead slot at the steel wire rope, when the wire rope upwards jumps the high 15mm of groove depth, wire rope thrust upwards is between 1000N to 3000N this moment, wire rope is with depression bar 11 jack-up, depression bar 11 drives one-level device 1 and moves upwards, iron sheet 14 among the one-level device 1 upwards moves trigger sensor 4 and detects and senses the signal, the staff receives the signal, after homing the wire rope, one-level mechanism 2 resets in the dead weight and the downward automatic movement of the resultant force of spring 12 elasticity.
Example 2
A device for detecting the groove disengagement of a steel wire rope reel of a crane comprises a primary mechanism 1, a secondary mechanism 2, a guide rail 3 and a sensor 4.
The primary mechanism 1 comprises a telescopic pressure lever 11 and a first spring 12 vertically connected with the telescopic pressure lever, the compressible pressure lever 11 comprises a cross rod and a vertical rod, the cross rod is in contact with the steel wire rope when the steel wire rope is out of the groove, and the vertical rod is telescopic and used for adjusting the distance between the pressure lever and the steel wire rope up and down; spring 12 upper end is equipped with regulating plate 13 of regulating spring elasticity, compresses spring 1210mm with regulating plate 13 during the installation, and the upper end of spring 12 is equipped with the iron sheet that triggers sensor 4, one-level mechanism 1 triggers thrust and is greater than 1000N.
The secondary mechanism 2 covers at the 1 back of primary mechanism, sensor 4 connects and openly just is located iron sheet 14 top at secondary mechanism 2, be equipped with on secondary mechanism 2 with horizontal pole vertically gag lever post 21, the excessive pressure of the scalable depression bar 11 of restriction, 2 back connections spring two 22 of secondary mechanism, be equipped with the regulating plate 23 of regulating spring elasticity on the spring two 22, use regulating plate 23 compression spring two 2250mm during the installation, secondary mechanism 2 triggers thrust and is greater than 3000N.
The back of guide rail 3 articulated secondary mechanism 2, guide rail 3 is double guide, guide rail 3 and secondary mechanism 2 parallel connection, secondary mechanism 2 reciprocates on guide rail 3, be equipped with limit baffle 31 on the guide rail 3, prevent the excessive pressure.
The jumping of the steel wire rope usually occurs under load of the crane spreader, the clamp is inverted to one side, the incident angle of the steel wire rope is increased and under the condition of tension, the diameter of the steel wire rope is 24mm, the steel wire rope jumps to the groove with a strand of steel wire rope, when the steel wire rope jumps upwards and the height of the steel wire rope is 24mm, at the moment, the steel wire rope pushes upwards more than 3000N, the steel wire rope jacks up the pressure lever 11, the pressure lever 11 drives the primary device 1 to move upwards, the iron sheet 14 in the primary device 1 moves upwards to trigger the sensor 4 to detect and sense signals until the pressure lever 11 contacts the limiting 21 rod in the secondary mechanism 2 and continues to jack up the secondary mechanism 2, therefore, the pressure of the steel wire rope on the device is buffered, the damage of the steel wire rope on the device is prevented, after a worker receives a signal and resets the steel wire rope, the primary mechanism 1 and the secondary mechanism 2 automatically move downwards and return under the combined force of the self weight and the elastic force of the first spring 12 and the second spring 22.
Example 3
A device for detecting the groove disengagement of a steel wire rope reel of a crane comprises a primary mechanism 1, a secondary mechanism 2, a guide rail 3 and a sensor 4.
The primary mechanism 1 comprises a telescopic pressure lever 11 and a first spring 12 vertically connected with the telescopic pressure lever, the compressible pressure lever 11 comprises a cross rod and a vertical rod, the cross rod is in contact with the steel wire rope when the steel wire rope is out of the groove, and the vertical rod is telescopic and used for adjusting the distance between the pressure lever and the steel wire rope up and down; spring 12 upper end is equipped with regulating plate 13 of regulating spring elasticity, compresses spring 1210mm with regulating plate 13 during the installation, and the upper end of spring 12 is equipped with the iron sheet that triggers sensor 4, one-level mechanism 1 triggers thrust and is greater than 1000N.
The secondary mechanism 2 covers at the 1 back of primary mechanism, sensor 4 connects and openly just is located iron sheet 14 top at secondary mechanism 2, be equipped with on secondary mechanism 2 with horizontal pole vertically gag lever post 21, the excessive pressure of the scalable depression bar 11 of restriction, 2 back connections spring two 22 of secondary mechanism, be equipped with the regulating plate 23 of regulating spring elasticity on the spring two 22, use regulating plate 23 compression spring two 2250mm during the installation, secondary mechanism 2 triggers thrust and is greater than 3000N.
The back of guide rail 3 articulated secondary mechanism 2, guide rail 3 is double guide, guide rail 3 and secondary mechanism 2 parallel connection, secondary mechanism 2 reciprocates on guide rail 3, be equipped with limit baffle 31 on the guide rail 3, prevent the excessive pressure.
Further, the distance between the limiting baffle 31 and the upper end of the secondary mechanism 2 is larger than 100mm, so that the steel wire rope is prevented from jumping upwards greatly, and the secondary mechanism 2 is provided with upward movement allowance.
The jumping of the steel wire rope usually occurs under load of the crane spreader, the clamp is inverted to one side, the incident angle of the steel wire rope is increased and under the condition of tension, the diameter of the steel wire rope is 24mm, the steel wire rope jumps to a groove with three strands of steel wire ropes superposed, when the steel wire rope jumps upwards and the height of the steel wire rope diameter is 48mm, at the moment, the steel wire rope pushes upwards more than 3000N, the steel wire rope jacks up the pressure lever 11, the pressure lever 11 drives the primary device 1 to move upwards, the iron sheet 14 in the primary device 1 moves upwards to trigger the sensor 4 to detect and sense signals until the pressure lever 11 contacts the limiting 21 rod in the secondary mechanism 2 and continues to jack up the secondary mechanism 2, therefore, the pressure of the steel wire rope on the device is buffered, the damage of the steel wire rope on the device is prevented, after a worker receives a signal and resets the steel wire rope, the primary mechanism 1 and the secondary mechanism 2 automatically move downwards and return under the combined force of the self weight and the elastic force of the first spring 12 and the second spring 22.
It should be understood that the above examples are only for clearly illustrating the technical solutions of the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The utility model provides a hoist wire rope reel out of groove detection device which characterized in that, includes one-level mechanism, the second grade mechanism who is connected with one-level mechanism, the guide rail of being connected with the second grade mechanism and be located the sensor of second grade mechanism, one-level mechanism includes scalable depression bar and the spring one of being connected with scalable depression bar, second grade mechanism connects spring two.
2. The device as claimed in claim 1, wherein the telescopic press rod adjusts the distance between the press rod and the steel cable up and down.
3. The device as claimed in claim 1, wherein the first spring is provided with an iron sheet.
4. The device for detecting the groove escape of the steel wire rope reel of the crane as claimed in claim 1, wherein a limit baffle is arranged on the guide rail.
5. The device as claimed in claim 4, wherein the distance between the limit stop and the upper end of the secondary mechanism is greater than 100 mm.
6. The device as claimed in claim 1, wherein the sensor is fixed to the secondary mechanism by screws.
7. The device for detecting the groove escape of the steel wire rope winding drum of the crane as claimed in claim 1, wherein the first spring and the second spring are provided with adjusting plates for adjusting the elasticity of the springs.
8. The device as claimed in claim 1, wherein the primary mechanism triggers thrust to be greater than 1000N.
9. The device as claimed in claim 1, wherein the secondary mechanism triggering thrust is greater than 3000N.
10. The device for detecting the groove escape of the steel wire rope reel of the crane as claimed in claim 1, wherein a stop lever is arranged on the secondary mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123381907.1U CN216613846U (en) | 2021-12-29 | 2021-12-29 | Crane wire rope reel groove-off detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123381907.1U CN216613846U (en) | 2021-12-29 | 2021-12-29 | Crane wire rope reel groove-off detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216613846U true CN216613846U (en) | 2022-05-27 |
Family
ID=81684710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123381907.1U Active CN216613846U (en) | 2021-12-29 | 2021-12-29 | Crane wire rope reel groove-off detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216613846U (en) |
-
2021
- 2021-12-29 CN CN202123381907.1U patent/CN216613846U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112978602B (en) | Lifting mechanism, ship lift, dock and working method of lifting mechanism | |
| CN116119517B (en) | Automatic anti-torsion device for port crane lifting appliance | |
| CN212864010U (en) | Rope loosening and overload protection detection assembly for stacker | |
| CN209668568U (en) | A kind of building hoist monitoring device of automatic alarm locking | |
| CN216613846U (en) | Crane wire rope reel groove-off detection device | |
| CN214653261U (en) | Lifting mechanism, ship lift and dock | |
| CN218025052U (en) | Heavy truck trades locking anti-breaking detection device of electric hoist and mount steel wire | |
| CN101585488A (en) | Wire cable rupture protection system | |
| CN218058131U (en) | Lifting machinery lifting hook anti-ejection device | |
| CN222574123U (en) | Super-high limiting device of container gantry crane | |
| CN212769275U (en) | Detection and safety device for tension of hoisting rope | |
| CN212687377U (en) | Hanger hangs down cable and prevents frame protection device | |
| CN208345584U (en) | A kind of suspension hook supplementary structure | |
| CN201169511Y (en) | Crane rope overwind-proof apparatus | |
| CN201762044U (en) | Novel safety protection device for tower crane | |
| CN212076216U (en) | Overweight control device of cable crane lifting rope | |
| CN219117003U (en) | Lifting limiter for crane | |
| CN215626400U (en) | Automatic rope guider of pneumatic small winch for well drilling | |
| CN220223189U (en) | Monitoring device for tail rope of elevator | |
| CN223102440U (en) | An upward limit device suitable for shaft hoisting | |
| CN206288866U (en) | A kind of raising stopping means and the crane using the raising stopping means | |
| CN220449607U (en) | Rope breakage protection device for lifting mechanism of roasting carbon block crane | |
| CN222023920U (en) | A protective device for hoisting crane | |
| CN214359849U (en) | Automatic change overload protection device of unmanned crane | |
| CN220283383U (en) | Rope breakage anti-falling device for tower crane lifting hook |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 412000 Room 401, F18 Building, Phase 6, Xinma Power Innovation Park, No. 899, Xianyue Road, Majiahe Street, Tianyuan District, Zhuzhou City, Hunan Province Patentee after: HUNAN TIANQIAO JIACHENG INTELLIGENT TECHNOLOGY Co.,Ltd. Country or region after: China Address before: 412000 R & D plant 308, phase C, Xinma power innovation park, 899 Xianyue Ring Road, Tianyuan District, Zhuzhou City, Hunan Province Patentee before: HUNAN TIANQIAO JIACHENG INTELLIGENT TECHNOLOGY Co.,Ltd. Country or region before: China |
|
| CP03 | Change of name, title or address |