CN112374395A - Height limiter for crane - Google Patents
Height limiter for crane Download PDFInfo
- Publication number
- CN112374395A CN112374395A CN202011272318.7A CN202011272318A CN112374395A CN 112374395 A CN112374395 A CN 112374395A CN 202011272318 A CN202011272318 A CN 202011272318A CN 112374395 A CN112374395 A CN 112374395A
- Authority
- CN
- China
- Prior art keywords
- wire rope
- rotating
- frame
- sliding
- fixed
- 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.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 43
- 239000010959 steel Substances 0.000 claims abstract description 43
- 239000000725 suspension Substances 0.000 claims abstract description 15
- 230000006835 compression Effects 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 8
- 238000010030 laminating Methods 0.000 claims 1
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract 1
- 239000011435 rock Substances 0.000 abstract 1
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/88—Safety gear
- B66C23/90—Devices for indicating or limiting lifting moment
- B66C23/905—Devices for indicating or limiting lifting moment electrical
Abstract
The invention discloses a height limiter for a crane, which comprises a suspension arm, a sliding groove, a screw rod, a second bolt and a connecting rod, wherein the left upper end of the suspension arm is rotatably connected with a guide wheel, a steel wire rope is attached to the outer side of the guide wheel, fixed disks are fixedly arranged on the front side and the rear side of the left upper end of the suspension arm through first bolts, a rotating frame is suspended in the air at the left lower part of the guide wheel, and the top of the rotating frame is fixedly connected with the lower side of the rotating arm. This high stopper for hoist, be provided with the spiral arm, the swivel mount, connecting rod and mount, when the angle changes between wire rope and the davit, wire rope pulling swivel mount uses spiral arm one end as the fulcrum rotation, make the swivel mount still fix on wire rope and davit, wire rope promotes the mount through the guiding axle and uses connecting rod one end as the fulcrum rotation when rocking, make wire rope keep at mount central point, above-mentioned structure plays the effect of compensation and location, make its wire rope that adapts to and rocks reduce the rigidity friction simultaneously, the wearing and tearing have been reduced, the service life is prolonged.
Description
Technical Field
The invention relates to the technical field of height limiters, in particular to a height limiter for a crane.
Background
The height limiter is a travel limit switch and is mainly installed on the crane, so that the roof fall accident can be effectively prevented.
Present high stopper divide into weight stopper and gyration stopper, the weight stopper is through confirming the lifting hook height with lifting hook direct contact, this spacing mode precision is high, but unable real-time determination lifting hook during the non-contact, and gyration stopper accessible wire rope displacement determines the lifting hook height in real time, nevertheless can the error when this stopper moves, lead to the position to judge the distortion easily after the error accumulation, consequently, two kinds of current high stoppers use and all have certain limitation, to the above-mentioned problem, need improve current equipment.
Disclosure of Invention
The invention aims to provide a height limiter for a crane, which aims to solve the problem that the existing height limiters proposed in the background technology are divided into a heavy hammer limiter and a rotary limiter, the heavy hammer limiter directly contacts with a lifting hook to determine the height of the lifting hook, the limiting mode has high precision, the lifting hook cannot be determined in real time when the heavy hammer limiter is not in contact with the lifting hook, the rotary limiter can judge the height of the lifting hook in real time through the moving distance of a steel wire rope, but the position of the position limiter is easy to be judged and distorted after errors are accumulated when the position limiter runs, and therefore the two existing height limiters have certain limitations when being used.
In order to achieve the purpose, the invention provides the following technical scheme: a height limiter for a crane, which comprises a suspension arm, a sliding chute, a screw rod, a second bolt and a connecting rod,
the steel wire rope hoisting device comprises a hoisting arm, a guide wheel is rotatably connected to the left upper end of the hoisting arm, a steel wire rope is attached to the outer side of the guide wheel, fixed disks are fixedly mounted on the front side and the rear side of the left upper end of the hoisting arm through first bolts, a rotating frame is suspended on the left lower side of the guide wheel, the top of the rotating frame is fixedly connected with the lower side of a rotating arm, and the upper side of the rotating arm is rotatably connected with the fixed disks;
the rotary rack comprises a rotary rack, a sliding chute, a sliding block, a screw rod, a pressing shaft, a second bolt, a magnetic wheel, a Hall sensor and a steel wire rope, wherein the sliding chute is formed in the rotary rack, the sliding block is connected to the inside of the sliding chute in a sliding manner, the screw rod penetrates through the left side of the rotary rack and is in threaded connection with the rotary rack, the right end of the screw rod penetrates through the sliding chute and is in rotational connection with the left end of the sliding block, the front end and the rear end of the pressing shaft are respectively in rotational connection with one sliding block, a rotary shaft is suspended in the right side of the rotary rack, connecting grooves are formed in the front end and the rear end of the rotary shaft, connecting pins are inserted in the connecting grooves, one;
the connecting rod, the connecting rod is fixed at the swivel mount downside, and the connecting rod rotates with the mount upside to be connected, the mount inboard rotates and is connected with two guiding axles, wire rope passes between two guiding axles, the unsettled adjustable shelf in mount below, and the adjustable shelf upside is fixed with the slide bar, compression spring has been cup jointed in the slide bar outside, and compression spring fixes respectively in mount bottom and adjustable shelf top in both ends from top to bottom, the slide opening has been seted up in the mount four corners, the slide bar upper end passes the slide opening and rather than sliding connection, mount upside fixed mounting has limit switch, and limit switch corresponds the slide bar setting.
Preferably, the center line of the guide wheel, the center line of the pressing shaft, the center line of the rotating shaft, the center line of the guide shaft and the steel wire rope are located on the same vertical plane, and the length dimension of the pressing shaft, the length dimension of the rotating shaft and the length dimension of the guide shaft are all larger than the length dimension of the guide wheel.
Preferably, the number of the swing arms is two, and the two swing arms are symmetrically arranged by taking the central line of the rotating frame as the center.
Preferably, the rotation axis of the radial arm coincides with the rotation axis of the guide wheel.
Preferably, the axis of rotation of the spindle coincides with the axis of rotation of the magnetic wheel and the axis of rotation of the connecting pin.
Preferably, the number of the connecting rods is two, and the two connecting rods are symmetrically arranged by taking the center line of the fixing frame as the center.
Preferably, the rotation axis of the fixing frame, the symmetry axis between the two guide shafts and the steel wire rope are located on the same vertical plane.
Preferably, the front side of the fixed frame and the front side of the movable frame are both provided with openings.
Preferably, the number of the sliding rods is four, and the four sliding rods are respectively arranged at four corners of the top of the movable frame.
Compared with the prior art, the invention has the beneficial effects that: the height limiter for the crane is characterized in that,
(1) the connecting groove, the connecting pin and the second bolt are arranged, the second bolt is taken down by rotating, and the rotating shaft is pulled to separate the connecting groove at the two ends of the rotating shaft from the connecting pin, so that the rotating shaft can be quickly replaced, the operation steps during maintenance are simplified, and the use is more convenient;
(2) the steel wire rope swinging device is provided with a swing arm, a rotating frame, a connecting rod and a fixing frame, when the angle between the steel wire rope and the suspension arm is changed, the steel wire rope pulls the rotating frame to rotate by taking one end of the swing arm as a fulcrum, so that the rotating frame is still fixed on the steel wire rope and the suspension arm, when the steel wire rope swings, the fixing frame is pushed by a guide shaft to rotate by taking one end of the connecting rod as the fulcrum, so that the steel wire rope is kept at the central part of the fixing frame, the structure plays a role in compensation and positioning, and the swinging steel wire rope is adapted to;
(3) be provided with limit switch and hall sensor, when pulling the lifting hook through wire rope, wire rope pulling pivot is rotated, rotates and drives the magnetic wheel and rotate, and hall sensor detects the number of turns of rotation of magnetic wheel, the real-time supervision lifting hook's of being convenient for height, and the touching promotes the adjustable shelf when the lifting hook height is too high simultaneously, promotes the slide bar when the adjustable shelf rises and rises along the slide opening, touches limit switch when the slide bar rises, through two kinds of spacing mode cooperation operations, has improved detection precision and practicality.
Drawings
FIG. 1 is a schematic cross-sectional front view of the present invention;
FIG. 2 is a schematic diagram of a left side view cross-sectional structure of the present invention;
FIG. 3 is a rear view of the present invention;
FIG. 4 is a schematic top view of the fixing frame of the present invention;
FIG. 5 is a schematic top view of a cross-sectional structure of the movable frame of the present invention;
FIG. 6 is a schematic top sectional view of the swivel frame of the present invention;
fig. 7 is a schematic rear sectional view of the swivel of the present invention.
In the figure: 1. the device comprises a suspension arm, 2, a guide wheel, 3, a steel wire rope, 4, a first bolt, 5, a fixed disc, 6, a rotating frame, 7, a rotating arm, 8, a sliding groove, 9, a sliding block, 10, a screw rod, 11, a pressing shaft, 12, a rotating shaft, 13, a connecting groove, 14, a connecting pin, 15, a second bolt, 16, a magnetic wheel, 17, a detection cavity, 18, a Hall sensor, 19, a connecting rod, 20, a fixed frame, 21, a guide shaft, 22, a movable frame, 23, a sliding rod, 24, a compression spring, 25, a sliding hole, 26, a limit switch, 27 and an opening.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-7, the present invention provides a technical solution: a height limiter for a crane is disclosed, as shown in figures 1, 2, 6 and 7, the left upper end of a suspension arm 1 is rotatably connected with a guide wheel 2, the outer side of the guide wheel 2 is provided with a steel wire rope 3 in an attaching manner, the central line of the guide wheel 2, the central line of a pressing shaft 11, the central line of a rotating shaft 12, the central line of a guide shaft 21 and the steel wire rope 3 are positioned on the same vertical plane, the length dimension of the pressing shaft 11, the length dimension of the rotating shaft 12 and the length dimension of the guide shaft 21 are all larger than the length dimension of the guide wheel 2, when the upper side of the steel wire rope 3 shakes in the guide wheel 2, the lower side part of the steel wire rope 3 is prevented from separating between the pressing shaft 11 and the rotating shaft 12 and between the two guide shafts 21, the front side and the rear side of the left upper end of the suspension arm 1 are fixedly provided with fixed discs 5 through first bolts 4, meanwhile, the upper side of a rotary arm 7 is rotatably connected with a fixed disc 5, two rotary arms 7 are arranged, the two rotary arms 7 are symmetrically arranged by taking the central line of a rotating frame 6 as the center, the rotating frame 6 is connected by matching the two rotary arms 7, so that the rotating frame 6 rotates more smoothly, the rotating axis of the rotary arm 7 is superposed with the rotating axis of a guide wheel 2, when the suspension arm 1 changes the angle, a steel wire rope 3 pulls the rotating frame 6 to rotate by taking one end of the rotary arm 7 as the center, the angle change between the rotating frame 6 and the steel wire rope 3 is reduced, a sliding groove 8 is arranged in the rotating frame 6, a sliding block 9 is slidably connected in the sliding groove 8, a screw rod 10 penetrates through the left side of the rotating frame 6 and is in threaded connection with the screw rod, the right end of the screw rod 10 penetrates through the sliding groove 8 and is rotatably connected with the left end of the sliding block 9, a compression shaft, the inside right side of swivel mount 6 is unsettled to have pivot 12, and connecting groove 13 has all been seted up at both ends around pivot 12, the axis of rotation of pivot 12 and 16 rotation axis of magnetic wheel and the axis of rotation coincidence of connecting pin 14, 3 pulling pivots 12 rotations of wire rope, it rotates to make pivot 12 directly drive 16 of magnetic wheel, connecting pin 14 has been pegged graft to the inside of connecting groove 13, and connecting pin 14 keeps away from one side of pivot 12 and is connected with swivel mount 6 rotation, second bolt 15 runs through pivot 12 and 14 threaded connection of connecting pin, the one end that connecting pin 14 kept away from pivot 12 is fixed with 16 of magnetic wheel, and 16 unsettled magnetic wheels are inside detecting chamber 17, it has hall sensor 18 to detect chamber 17 inside simultaneously, wire rope 3 passes between pivot 12 and the compact axle 11.
As shown in fig. 1, 2, 3, 4 and 5, the connecting rod 19 is fixed at the lower side of the rotating frame 6, the connecting rod 19 is rotatably connected with the upper side of the fixed frame 20, two connecting rods 19 are provided, the two connecting rods 19 are symmetrically arranged with the center line of the fixed frame 20 as the center, the fixed frame 20 is connected with the fixed frame 20 in a matching way through the two connecting rods 19, so that the fixed frame 20 rotates more stably, the rotation axis of the fixed frame 20, the symmetry axis between the two guide shafts 21 and the steel wire rope 3 are positioned on the same vertical plane, the fixed frame 20 is driven to rotate through the two guide shafts 21 when the steel wire rope 3 is kept vertical, so that the fixed frame 20 is kept vertical, the front sides of the fixed frame 20 and the movable frame 22 are both provided with openings 27, so that the steel wire rope 3 directly passes through the openings 27 to enter the centers of the movable frame 22, the movable frame 22 is suspended below the fixed frame 20, a sliding rod 23 is fixed on the upper side of the movable frame 22, four sliding rods 23 are arranged, four sliding rods 23 are respectively arranged at four corners of the top of the movable frame 22, the movable frame 22 is enabled to uniformly ascend through the cooperation of the sliding rods 23 and the sliding holes 25, a compression spring 24 is sleeved on the outer side of each sliding rod 23, the upper end and the lower end of the compression spring 24 are respectively fixed at the bottoms of the fixed frames 20 and the tops of the movable frames 22, the sliding holes 25 are formed in the four corners of the fixed frames 20, the upper ends of the sliding rods 23 penetrate through the sliding holes 25 and are in sliding connection with the sliding holes, a limit switch 26 is fixedly arranged.
The working principle is as follows: when the height limiter for the crane is used, the model AH3144EUA of the Hall sensor 18 and the model AH 3126 of the limit switch 26 are E2A-M12LS04-M1, an external power supply is switched on, the winch is started, the winch pulls the lifting hook to rise through the steel wire rope 3, the position of the rotating frame 6 is fixed by the cooperation of the tightened steel wire rope 3 and the suspension arm 1, the steel wire rope 3 moves and pulls the rotating shaft 12 to rotate, the rotating shaft 12 drives the magnetic wheel 16 in the detection cavity 17 to rotate through the connecting pin 14, the Hall sensor 18 in the detection cavity 17 monitors the rotating circle number of the magnetic wheel 16, the moving distance of the steel wire rope 3 and the rising height of the lifting hook can be calculated, the lifting hook touches the movable frame 22 when the height is too high and pushes the movable frame 22 to rise, the tightened steel wire rope 3 is matched with the connecting rod 19 to fix the position of the fixed frame 20, the movable frame 22 pushes the sliding rod 23 to rise, when the lifting hook descends, the compression spring 24 pushes the movable frame 22 to reset, the limit switch 26 is matched with the Hall sensor 18 for double detection, the height of the lifting hook can be monitored quickly and in real time, the roof fall accident is effectively prevented, the defects are mutually compensated by matching the two detection modes, the use is more practical, when the steel wire rope 3 shakes, the steel wire rope 3 pushes the fixed frame 20 and one end of the connecting rod 19 to rotate as a fulcrum through the guide shaft 21, when the suspension arm 1 changes the angle, the steel wire rope 3 pushes the rotating frame 6 to rotate by taking one end of the rotating arm 7 as the fulcrum through the pressing shaft 11 and the rotating shaft 12, so that the limiter can automatically perform displacement compensation along with the movement of the steel wire rope 3, the height limiter is prevented from supporting the steel wire rope 3, the abrasion caused by hard friction is reduced, the service life is prolonged, and when the rotating shaft 12 needs to be, the second bolt 15 is rotated and taken down, the rotating shaft 12 is pulled, connecting grooves 13 at two ends of the rotating shaft 12 are separated from connection with a connecting pin 14, reverse operation is performed, the new rotating shaft 12 is replaced, the steel wire rope 3 is located between the rotating shaft 12 and the pressing shaft 11, the screw rod 10 is rotated, the screw rod 10 pushes the sliding block 9 to slide along the sliding groove 8, the sliding block 9 pushes the pressing shaft 11 to move, the pressing shaft 11 and the rotating shaft 12 are matched to press the steel wire rope 3, the steel wire rope 3 conveniently pulls the rotating shaft 12 to rotate through friction force when the steel wire rope 3 moves, and therefore all work is completed.
The terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for simplicity of description only and are not intended to indicate or imply that the referenced devices or elements must be in a particular orientation, constructed and operative in a particular orientation, and are not to be considered limiting of the claimed invention.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (9)
1. The utility model provides a high stopper for hoist, includes davit (1), spout (8), screw rod (10), second bolt (15) and connecting rod (19), its characterized in that:
the suspension arm (1), the upper left end of the suspension arm (1) is rotatably connected with a guide wheel (2), the outer side of the guide wheel (2) is provided with a steel wire rope (3) in a laminating manner, the front side and the rear side of the upper left end of the suspension arm (1) are fixedly provided with fixed disks (5) through first bolts (4), the lower left side of the guide wheel (2) is suspended with a rotating frame (6), the top of the rotating frame (6) is fixedly connected with the lower side of a rotating arm (7), and meanwhile, the upper side of the rotating arm (7) is rotatably connected with the fixed disks (5);
the sliding groove (8) is arranged inside the rotating frame (6), the sliding block (9) is connected inside the sliding groove (8) in a sliding mode, the screw rod (10) penetrates through the left side of the rotating frame (6) and is in threaded connection with the left side of the rotating frame, the right end of the screw rod (10) penetrates through the sliding groove (8) and is in rotating connection with the left end of the sliding block (9), the left side of the inside of the rotating frame (6) is suspended with the compressing shaft (11), the front end and the rear end of the compressing shaft (11) are respectively in rotating connection with the sliding block (9), the right side of the inside of the rotating frame (6) is suspended with the rotating shaft (12), the front end and the rear end of the rotating shaft (12) are respectively provided with the connecting groove (13), the connecting pin (14) is inserted into the connecting groove (13), one side, far away from the rotating shaft (12), of the connecting pin (14) is in rotating connection with the rotating frame (, a magnetic wheel (16) is fixed at one end, far away from the rotating shaft (12), of the connecting pin (14), the magnetic wheel (16) is suspended in the detection cavity (17), a Hall sensor (18) is fixed in the detection cavity (17), and the steel wire rope (3) penetrates between the rotating shaft (12) and the pressing shaft (11);
a connecting rod (19), the connecting rod (19) is fixed at the lower side of the rotating frame (6), the connecting rod (19) is rotationally connected with the upper side of the fixed frame (20), the inner side of the fixed frame (20) is rotationally connected with two guide shafts (21), the steel wire rope (3) passes through the space between the two guide shafts (21), a movable frame (22) is suspended below the fixed frame (20), a sliding rod (23) is fixed on the upper side of the movable frame (22), a compression spring (24) is sleeved on the outer side of the sliding rod (23), and the upper and lower ends of the compression spring (24) are respectively fixed at the bottom of the fixed frame (20) and the top of the movable frame (22), four corners of the fixed frame (20) are provided with sliding holes (25), the upper end of the sliding rod (23) passes through the sliding holes (25) and is connected with the sliding holes in a sliding way, and a limit switch (26) is fixedly mounted on the upper side of the fixed frame (20), and the limit switch (26) is arranged corresponding to the sliding rod (23).
2. The height limiter for cranes according to claim 1, wherein: the center line of the guide wheel (2), the center line of the pressing shaft (11), the center line of the rotating shaft (12), the center line of the guide shaft (21) and the steel wire rope (3) are located on the same vertical plane, and the length dimension of the pressing shaft (11), the length dimension of the rotating shaft (12) and the length dimension of the guide shaft (21) are all larger than the length dimension of the guide wheel (2).
3. The height limiter for cranes according to claim 1, wherein: the number of the swing arms (7) is two, and the two swing arms (7) are symmetrically arranged by taking the central line of the rotating frame (6) as the center.
4. The height limiter for cranes according to claim 1, wherein: the rotation axis of the radial arm (7) is coincident with the rotation axis of the guide wheel (2).
5. The height limiter for cranes according to claim 1, wherein: the axis of rotation of the spindle (12) coincides with the axis of rotation of the magnet wheel (16) and the axis of rotation of the connecting pin (14).
6. The height limiter for cranes according to claim 1, wherein: the two connecting rods (19) are arranged, and the two connecting rods (19) are symmetrically arranged by taking the center line of the fixing frame (20) as the center.
7. The height limiter for cranes according to claim 1, wherein: the rotation axis of the fixed frame (20), the symmetry axis between the two guide shafts (21) and the steel wire rope (3) are positioned on the same vertical plane.
8. The height limiter for cranes according to claim 1, wherein: openings (27) are formed in the front side of the fixed frame (20) and the front side of the movable frame (22).
9. The height limiter for cranes according to claim 1, wherein: the number of the sliding rods (23) is four, and the four sliding rods (23) are respectively arranged at four corners of the top of the movable frame (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011272318.7A CN112374395A (en) | 2020-11-14 | 2020-11-14 | Height limiter for crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011272318.7A CN112374395A (en) | 2020-11-14 | 2020-11-14 | Height limiter for crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112374395A true CN112374395A (en) | 2021-02-19 |
Family
ID=74582330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011272318.7A Pending CN112374395A (en) | 2020-11-14 | 2020-11-14 | Height limiter for crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112374395A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203190958U (en) * | 2013-04-10 | 2013-09-11 | 新乡市恒创机械设备有限公司 | Detection device for hook height of electric hoist, and electric hoist using detection device |
| CN104355234A (en) * | 2014-10-29 | 2015-02-18 | 韶关市博仕乐液压机械制造有限公司 | Stroke detection device for crane steel rope |
| CN205114840U (en) * | 2015-11-13 | 2016-03-30 | 武汉钢铁(集团)公司 | Working roll clamp presss from both sides tight stop device |
| CN106741651A (en) * | 2016-11-13 | 2017-05-31 | 无锡晟欧船舶设备有限公司 | Rescue boat suspension bracket |
| CN208102267U (en) * | 2018-04-28 | 2018-11-16 | 江苏佼燕船舶设备有限公司 | Rescue boat boat davit with hydraulic cushion |
| CN208516819U (en) * | 2018-05-25 | 2019-02-19 | 深圳市强保成机械有限公司 | A kind of sea loop wheel machine rope reeling mechanism |
| KR20190063036A (en) * | 2017-11-29 | 2019-06-07 | 주식회사 라스테크 | Apparatus for measuring quality of water |
| CN110902584A (en) * | 2019-12-05 | 2020-03-24 | 湖南百特随车起重机有限公司 | Anti-collision protection device for truck-mounted crane |
| CN214956497U (en) * | 2021-05-28 | 2021-11-30 | 徐州长航科技有限公司 | Height limit switch |
-
2020
- 2020-11-14 CN CN202011272318.7A patent/CN112374395A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203190958U (en) * | 2013-04-10 | 2013-09-11 | 新乡市恒创机械设备有限公司 | Detection device for hook height of electric hoist, and electric hoist using detection device |
| CN104355234A (en) * | 2014-10-29 | 2015-02-18 | 韶关市博仕乐液压机械制造有限公司 | Stroke detection device for crane steel rope |
| CN205114840U (en) * | 2015-11-13 | 2016-03-30 | 武汉钢铁(集团)公司 | Working roll clamp presss from both sides tight stop device |
| CN106741651A (en) * | 2016-11-13 | 2017-05-31 | 无锡晟欧船舶设备有限公司 | Rescue boat suspension bracket |
| KR20190063036A (en) * | 2017-11-29 | 2019-06-07 | 주식회사 라스테크 | Apparatus for measuring quality of water |
| CN208102267U (en) * | 2018-04-28 | 2018-11-16 | 江苏佼燕船舶设备有限公司 | Rescue boat boat davit with hydraulic cushion |
| CN208516819U (en) * | 2018-05-25 | 2019-02-19 | 深圳市强保成机械有限公司 | A kind of sea loop wheel machine rope reeling mechanism |
| CN110902584A (en) * | 2019-12-05 | 2020-03-24 | 湖南百特随车起重机有限公司 | Anti-collision protection device for truck-mounted crane |
| CN214956497U (en) * | 2021-05-28 | 2021-11-30 | 徐州长航科技有限公司 | Height limit switch |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112729174A (en) | Level detection device is used in linear guide production | |
| CN206811686U (en) | A kind of tank body multi-angle polishes grinding machine | |
| CN212497632U (en) | Maintenance detection equipment for airplane hub | |
| CN112374395A (en) | Height limiter for crane | |
| CN112503315B (en) | Mounting device for monitoring high-speed gear | |
| CN110723665A (en) | Cantilever crane angle adjusting device | |
| CN211169599U (en) | Swing arm crane with swing arm slewing device | |
| CN214310879U (en) | Driving obstacle detection device | |
| CN112456371B (en) | High-efficient stable perpendicular material lifting machine | |
| CN210863135U (en) | Crane braking test device | |
| CN110976958B (en) | Arc drilling equipment | |
| CN109484994B (en) | Probing forklift fork arm | |
| CN111999191A (en) | High-efficient portable highway bridge bearing capacity detecting system | |
| CN215592476U (en) | Servo drive control mechanism modified from common chain hoist | |
| CN110885012A (en) | Swing arm crane with swing arm slewing device | |
| CN220887745U (en) | Double independent lifting mechanism for travelling crane | |
| CN220671563U (en) | Cabin electric detection device | |
| CN213179439U (en) | Sintering machine trolley and arching detection protection device thereof | |
| CN213171231U (en) | Suspension arm steering device of crawler crane | |
| CN218708726U (en) | Mobile crane and overturn-preventing monitoring device thereof | |
| CN217845956U (en) | Motor car wheel abrasion degree detection device | |
| CN219709034U (en) | Electric lifting device for cargo carrying platform | |
| CN218194396U (en) | Abrasion tester device | |
| CN220912600U (en) | Floor spring life detection equipment | |
| CN220149028U (en) | Adjustable mechanical equipment maintenance lifting mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |