CN113620196A - Braking device for vertical direction of crane and working method thereof - Google Patents
Braking device for vertical direction of crane and working method thereof Download PDFInfo
- Publication number
- CN113620196A CN113620196A CN202110910366.2A CN202110910366A CN113620196A CN 113620196 A CN113620196 A CN 113620196A CN 202110910366 A CN202110910366 A CN 202110910366A CN 113620196 A CN113620196 A CN 113620196A
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- Prior art keywords
- guide plate
- crane
- brake block
- vertical direction
- fixedly connected
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/06—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with radial effect
- B66D5/08—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with radial effect embodying blocks or shoes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/24—Operating devices
- B66D5/26—Operating devices pneumatic or hydraulic
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention relates to a braking device for a crane in the vertical direction and a working method thereof, wherein the braking device comprises: a bottom plate, wherein the middle part of the top surface of the bottom plate is fixedly provided with a shell, the interior of the shell is provided with a rolling cavity, the bottom of the rolling cavity is provided with a rolling mechanism, the cavity wall at one side of the rolling cavity is provided with a braking mechanism, the middle part of the bottom surface of the bottom plate is provided with a through hole, the brake block body is limited through the first guide plate and the second guide plate, the brake block body moves stably, so that the clamping groove on the brake block body can be clamped with the fixed block, the two second inclined blocks are driven to move by the movement of the brake block body and are matched with the second limit holes to limit the connecting rod, the two second inclined blocks and the corresponding first inclined blocks are pushed to enable the corresponding rotating rods to rotate, the two rotating rods simultaneously rotate to match with the bolts to pull the pushing rods, the pushing block is matched with the clamping groove to limit and fix the fixing block, so that the braking effect of the rotating shaft is improved.
Description
Technical Field
The invention relates to the field of cranes, in particular to a brake device for a crane in the vertical direction, and more particularly relates to a brake device for a crane in the vertical direction and a working method thereof.
Background
The crane refers to a multi-action hoisting machine for vertically lifting and horizontally carrying heavy objects within a certain range; also known as a crown block or a crane; the hoisting equipment has the working characteristics of intermittent movement, namely corresponding mechanisms for taking materials, transporting, unloading and the like in one working cycle alternately work, so that the development and the use of the crane on the market are more and more extensive.
The hoist is when transporting the goods, need brake the lifting rope, prevents that the goods from falling suddenly and causing the damage to subaerial people or other buildings, and traditional hoist braking mode is half-wave rectifier braking, transformer bridge type rectifier braking and solenoid valve band-type brake braking, but these mode brakeings are comparatively complicated, easy error, and expensive, inconvenient dismantles and gets off and change the part.
Disclosure of Invention
The problem of traditional hoist braking mode be half-wave rectification braking, transformer bridge type rectification braking and solenoid valve band-type brake braking has been solved to this scheme, but these mode brakess are comparatively complicated, error appears easily, and the price is expensive, and inconvenient dismantlement gets off to change the part.
The purpose of the invention can be realized by the following technical scheme: a braking device for the vertical direction of a crane and a working method thereof comprise the following steps: the winding device comprises a base plate, wherein a shell is fixedly mounted in the middle of the top surface of the base plate, a winding cavity is formed in the shell, a winding mechanism is arranged at the bottom of the winding cavity, a braking mechanism is arranged on the wall of one side cavity of the winding cavity, and a through hole is formed in the middle of the bottom surface of the base plate.
The invention has further technical improvements that: winding mechanism include with shell rolling chamber bottom fixed connection's mount pad, the top of mount pad is rotated through the pivot and is connected with the cylinder, the round trip has a lifting rope on the cylinder, shell and through-hole are run through to the one end of lifting rope, the one end fixedly connected with fixed block of pivot.
The invention has further technical improvements that: the brake mechanism comprises a first guide plate, a second guide plate and a hydraulic push rod, wherein the first guide plate, the second guide plate and the hydraulic push rod are fixedly connected with the wall of the housing rolling cavity, a brake block is arranged between the first guide plate and the second guide plate in a sliding mode, and moving mechanisms are arranged on the surfaces, far away from the brake block, of the first guide plate and the second guide plate.
The invention has further technical improvements that: first spacing hole and the spacing hole of second have all been seted up on first deflector and the second deflector, two the inside slip in first spacing hole is provided with pushing mechanism.
The invention has further technical improvements that: the moving mechanism comprises a supporting rod fixedly connected with the second guide plate, the top of the supporting rod is rotatably connected with a rotating rod through a fixing pin, and a first inclined block is fixedly connected with one end of the rotating rod.
The invention has further technical improvements that: push mechanism includes the catch bar with two first spacing hole sliding connection, the spout has all been seted up at the both ends of catch bar, two the spout is respectively through bolt and the dwang other end swing joint that corresponds, the middle part fixedly connected with catch block of catch bar, two guiding holes have been seted up towards a side of catch block to the catch bar.
The invention has further technical improvements that: the brake block comprises a brake block body fixedly connected with the extension end of the hydraulic push rod, a clamping groove is formed in one side, away from the hydraulic push rod, of the brake block body, the clamping groove corresponds to the position of the fixing block, guide rods are fixedly connected to the two sides of the clamping groove, connecting rods are fixedly connected to the top surface and the bottom surface of the brake block body, and a second inclined block is fixedly connected to one end of each connecting rod.
The invention has further technical improvements that: the two guide rods are respectively in sliding connection with the corresponding guide holes, and the two second inclined blocks respectively penetrate through the corresponding second limiting holes and are in sliding connection with the corresponding first inclined blocks.
The invention has further technical improvements that: the improved winding mechanism is characterized in that a dust cover is fixedly mounted on one side of the top surface of the bottom plate, a servo motor used for driving the winding mechanism is arranged in the dust cover, an air cylinder is arranged on the other side of the top surface of the bottom plate, and bottom feet are fixedly connected to four corners of the bottom surface of the bottom plate.
The working method of the braking device for the vertical direction of the crane specifically comprises the following steps:
the method comprises the following steps: the servo motor operates to drive the rotating shaft to rotate, so that the roller winds the lifting rope, and when the lifting rope is wound to a preset length, an operator controls the servo motor to stop operating;
step two: the air cylinder provides air pressure for the hydraulic push rod, so that the extending end of the hydraulic push rod is extended, the brake block body slides between the first guide plate and the second guide plate, the clamping groove in the brake block body is used for clamping the fixed block, and the rotating shaft is in a braking state;
step three: drive two second sloping blocks through the brake block body and promote the first sloping block that corresponds for two dwangs take place to rotate, make the catch bar move towards the fixed block under the spacing condition of two guide bars, thereby make catch block and the draw-in groove on the brake block body mutually support, carry out more stable braking to the fixed block.
Compared with the prior art, the invention has the beneficial effects that:
1. when the brake device is used, the brake block body is limited through the first guide plate and the second guide plate, so that the brake block body is matched with the hydraulic push rod to stably move between the first guide plate and the second guide plate, the clamping groove in the brake block body can be clamped with the fixed block, when the brake block body is matched with the hydraulic push rod, whether the brake block body brakes the rotating shaft or not can be conveniently controlled, meanwhile, the brake block is conveniently detached to maintain, and therefore the use efficiency of the brake device is guaranteed.
2. When the brake block is used, the two second inclined blocks are driven to move through the movement of the brake block body and are matched with the second limiting holes to limit the connecting rod, so that the second inclined blocks are kept stable in the moving process, the two second inclined blocks and the corresponding first inclined blocks are pushed to enable the corresponding rotating rods to rotate, the two rotating rods are simultaneously and rotatably matched with the bolts to pull the pushing rods, the pushing blocks are enabled to move towards the fixed blocks, the pushing blocks are matched with the clamping grooves in the brake block body to limit and fix the fixed blocks, and therefore the braking effect on the rotating shaft is improved.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of a winding mechanism according to the present invention;
FIG. 3 is a schematic structural view of the braking mechanism of the present invention;
FIG. 4 is a perspective view of the braking mechanism of the present invention;
FIG. 5 is a perspective view of the moving mechanism of the present invention;
FIG. 6 is a perspective view of the pushing mechanism of the present invention;
figure 7 is a perspective view of the brake pad of the present invention.
In the figure: 1. a base plate; 2. a dust cover; 3. a servo motor; 4. lifting a lifting rope; 5. a housing; 6. a winding mechanism; 7. a brake mechanism; 8. a cylinder; 9. a through hole; 10. footing; 601. a drum; 602. a fixed block; 603. a rotating shaft; 604. a mounting seat; 701. a first guide plate; 702. a pushing mechanism; 703. a second guide plate; 704. a moving mechanism; 705. a brake pad; 706. a hydraulic push rod; 7021. a chute; 7022. a push rod; 7023. a guide hole; 7024. a pushing block; 7041. rotating the rod; 7042. a first swash block; 7043. a support bar; 7051. a connecting rod; 7052. a guide bar; 7053. a brake pad body; 7054. and a second swash block.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood 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, a brake device for a crane in a vertical direction and a working method thereof include a bottom plate 1, a housing 5 is fixedly installed in the middle of the top surface of the bottom plate 1, a winding cavity is formed inside the housing 5, a winding mechanism 6 is arranged at the bottom of the winding cavity, a brake mechanism 7 is arranged on the cavity wall on one side of the winding cavity, and a through hole 9 is formed in the middle of the bottom surface of the bottom plate 1.
The winding mechanism 6 comprises a mounting seat 604 fixedly connected with the bottom of the winding cavity of the shell 5, the top of the mounting seat 604 is rotatably connected with a roller 601 through a rotating shaft 603, a lifting rope 4 is wound on the roller 601, one end of the lifting rope 4 penetrates through the shell 5 and the through hole 9, and one end of the rotating shaft 603 is fixedly connected with a fixed block 602; the servo motor 3 operates to drive the rotating shaft 603 to rotate, and the lifting rope 4 is driven to be wound on the roller 601, so that the length of the lifting rope 4 is controlled.
The braking mechanism 7 comprises a first guide plate 701, a second guide plate 703 and a hydraulic push rod 706 which are fixedly connected with the wall of the winding cavity of the housing 5, a brake block 705 is arranged between the first guide plate 701 and the second guide plate 703 in a sliding manner, a moving mechanism 704 is arranged on one side of each of the first guide plate 701 and the second guide plate 703, which is far away from the brake block 705, a first limiting hole and a second limiting hole are respectively formed in each of the first guide plate 701 and the second guide plate 703, and a pushing mechanism 702 is arranged in each of the two first limiting holes in a sliding manner; the brake block body 7053 is limited by the first guide plate 701 and the second guide plate 703, so that the brake block body 7053 is matched with the hydraulic push rod 706 to move smoothly between the first guide plate 701 and the second guide plate 703, a clamping groove in the brake block body 7053 can be clamped with the fixed block 602, and the brake block body 7053 can be conveniently controlled to brake the rotating shaft 603 by being matched with the hydraulic push rod 706.
The moving mechanism 704 comprises a supporting rod 7043 fixedly connected with the second guide plate 703, the top of the supporting rod 7043 is rotatably connected with a rotating rod 7041 through a fixing pin, one end of the rotating rod 7041 is fixedly connected with a first inclined block 7042, the pushing mechanism 702 comprises a pushing rod 7022 slidably connected with two first limiting holes, two ends of the pushing rod 7022 are respectively provided with a sliding groove 7021, the two sliding grooves 7021 are respectively movably connected with the other end of the corresponding rotating rod 7041 through bolts, the middle part of the pushing rod 7022 is fixedly connected with a pushing block 7024, one side surface of the pushing rod 7022 facing the pushing block 7024 is provided with two guide holes 7023, the brake block 705 comprises a brake block body 7053 fixedly connected with the extending end of the hydraulic push rod 706, one side of the brake block body 7053 far away from the hydraulic push rod 706 is provided with a clamping groove, the clamping groove corresponds to the position of the fixing block 602, two sides of the clamping groove are fixedly connected with guide rods 7052, the top surface and the bottom surface of the brake block body 7053 are fixedly connected with a connecting rod 7051, one end of each of the two connecting rods 7051 is fixedly connected with a second inclined block 7054, the two guide rods 7052 are respectively in sliding connection with the corresponding guide holes 7023, and the two second inclined blocks 7054 respectively penetrate through the corresponding second limiting holes and are in sliding connection with the corresponding first inclined blocks 7042; move two second sloping blocks 7054 of drive through brake block body 7053 and move, the spacing pore pair connecting rod 7051 of cooperation second is spacing, make the second sloping block 7054 keep steady at the removal in-process, promote with the first sloping block 7042 that corresponds through two second sloping blocks 7054, make corresponding dwang 7041 rotate, two dwang 7041 normal running fit bolts pull catch bar 7022 simultaneously, make catch block 7024 move towards fixed block 602, make the draw-in groove that catch block 7024 cooperates on the brake block body 7053 carry out spacing fixed to fixed block 602, thereby improve the braking effect to countershaft 603.
A dust cover 2 is fixedly mounted on one side of the top surface of the bottom plate 1, a servo motor 3 used for driving a winding mechanism 6 is arranged inside the dust cover 2, a cylinder 8 is arranged on the other side of the top surface of the bottom plate 1, and bottom feet 10 are fixedly connected to four corners of the bottom surface of the bottom plate 1.
The working method of the braking device for the vertical direction of the crane specifically comprises the following steps:
the method comprises the following steps: the servo motor 3 is operated to drive the rotating shaft 603 to rotate, so that the roller 601 winds the lifting rope 4, and when the lifting rope 4 is wound to a preset length, an operator controls the servo motor 3 to stop operating;
step two: the air cylinder 8 provides air pressure for the hydraulic push rod 706, so that the extending end of the hydraulic push rod 706 is extended, the brake block body 7053 slides between the first guide plate 701 and the second guide plate 703, and the clamping groove on the brake block body 7053 clamps the fixed block 602, so that the rotating shaft 603 is in a braking state;
step three: the two second inclined blocks 7054 are driven by the brake block body 7053 to push the corresponding first inclined blocks 7042, so that the two rotating rods 7041 rotate, the push rod 7022 moves towards the fixed block 602 under the limiting condition of the two guide rods 7052, and the push block 7024 is matched with a clamping groove in the brake block body 7053 to brake the fixed block 602 more stably.
The working principle is as follows: when the brake block is used, firstly, the hydraulic push rod 706 is powered through the air cylinder 8, so that the hydraulic push rod 706 extends to provide thrust for the brake block body 7053, the brake block body 7053 is limited through the first guide plate 701 and the second guide plate 703, so that the brake block body 7053 is matched with the hydraulic push rod 706 to move stably between the first guide plate 701 and the second guide plate 703, a clamping groove in the brake block body 7053 can be clamped with the fixed block 602, and whether the brake block body 7053 brakes the rotating shaft 603 or not can be conveniently controlled by matching with the hydraulic push rod 706; move two second sloping blocks 7054 of drive through brake block body 7053 and move, the spacing pore pair connecting rod 7051 of cooperation second is spacing, make the second sloping block 7054 keep steady at the removal in-process, promote with the first sloping block 7042 that corresponds through two second sloping blocks 7054, make corresponding dwang 7041 rotate, two dwang 7041 normal running fit bolts pull catch bar 7022 simultaneously, make catch block 7024 move towards fixed block 602, make the draw-in groove that catch block 7024 cooperates on the brake block body 7053 carry out spacing fixed to fixed block 602, thereby improve the braking effect to countershaft 603.
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A braking device for a crane in the vertical direction and a working method thereof are characterized in that: comprises that
The winding device comprises a base plate (1), wherein a shell (5) is fixedly mounted in the middle of the top surface of the base plate (1), a winding cavity is formed in the shell (5), a winding mechanism (6) is arranged at the bottom of the winding cavity, a braking mechanism (7) is arranged on the wall of one side cavity of the winding cavity, and a through hole (9) is formed in the middle of the bottom surface of the base plate (1).
2. The braking device for the vertical direction of the crane and the working method thereof according to claim 1 are characterized in that the winding mechanism (6) comprises a mounting seat (604) fixedly connected with the bottom of the winding cavity of the housing (5), the top of the mounting seat (604) is rotatably connected with a roller (601) through a rotating shaft (603), a lifting rope (4) is wound on the roller (601), one end of the lifting rope (4) penetrates through the housing (5) and the through hole (9), and one end of the rotating shaft (603) is fixedly connected with a fixed block (602).
3. The braking device for the vertical direction of the crane and the working method thereof according to claim 1 are characterized in that the braking mechanism (7) comprises a first guide plate (701), a second guide plate (703) and a hydraulic push rod (706) which are fixedly connected with the wall of the winding cavity of the housing (5), a brake block (705) is arranged between the first guide plate (701) and the second guide plate (703) in a sliding manner, and a moving mechanism (704) is arranged on the surfaces of the first guide plate (701) and the second guide plate (703) far away from the brake block (705).
4. The braking device for the vertical direction of the crane and the working method thereof according to claim 3, wherein the first guide plate (701) and the second guide plate (703) are both provided with a first limiting hole and a second limiting hole, and a pushing mechanism (702) is arranged inside the two first limiting holes in a sliding manner.
5. The vertical direction braking device for the crane and the working method thereof according to claim 3, wherein the moving mechanism (704) comprises a supporting rod (7043) fixedly connected with the second guide plate (703), the top of the supporting rod (7043) is rotatably connected with a rotating rod (7041) through a fixed pin, and one end of the rotating rod (7041) is fixedly connected with a first inclined block (7042).
6. The braking device for the vertical direction of the crane and the working method of the braking device for the vertical direction of the crane according to claim 4, wherein the pushing mechanism (702) comprises a pushing rod (7022) which is in sliding connection with two first limiting holes, sliding grooves (7021) are formed in two end portions of the pushing rod (7022), the two sliding grooves (7021) are movably connected with the other end of a corresponding rotating rod (7041) through bolts respectively, a pushing block (7024) is fixedly connected to the middle of the pushing rod (7022), and two guide holes (7023) are formed in one side face, facing the pushing block (7024), of the pushing rod (7022).
7. The vertical direction brake device for the crane and the working method thereof according to claim 3, wherein the brake block (705) comprises a brake block body (7053) fixedly connected with the extending end of the hydraulic push rod (706), a clamping groove is formed in one side, away from the hydraulic push rod (706), of the brake block body (7053), the clamping groove corresponds to the position of the fixed block (602), guide rods (7052) are fixedly connected to two sides of the clamping groove, connecting rods (7051) are fixedly connected to the top surface and the bottom surface of the brake block body (7053), and a second inclined block (7054) is fixedly connected to one end of each connecting rod (7051).
8. The vertical direction braking device for the crane and the working method thereof according to claim 7, wherein the two guide rods (7052) are respectively connected with the corresponding guide holes (7023) in a sliding manner, and the two second inclined blocks (7054) respectively penetrate through the corresponding second limiting holes and are connected with the corresponding first inclined blocks (7042) in a sliding manner.
9. The vertical direction braking device for the crane and the working method thereof according to claim 1 are characterized in that a dust cover (2) is fixedly installed on one side of the top surface of the bottom plate (1), a servo motor (3) for driving a winding mechanism (6) is arranged inside the dust cover (2), an air cylinder (8) is arranged on the other side of the top surface of the bottom plate (1), and feet (10) are fixedly connected to four corners of the bottom surface of the bottom plate (1).
10. A method for operating a vertical direction brake apparatus of a crane according to any one of claims 1 to 9, wherein: the method specifically comprises the following steps:
the method comprises the following steps: the servo motor (3) operates to drive the rotating shaft (603) to rotate, so that the roller (601) winds the lifting rope (4), and when the lifting rope (4) is wound to a preset length, an operator controls the servo motor (3) to stop operating;
step two: the air cylinder (8) is used for providing air pressure for the hydraulic push rod (706), so that the extending end of the hydraulic push rod (706) is extended, the brake block body (7053) slides between the first guide plate (701) and the second guide plate (703), the clamping groove in the brake block body (7053) is used for clamping the fixed block (602), and the rotating shaft (603) is in a braking state;
step three: the two second inclined blocks (7054) are driven by the brake block body (7053) to push the corresponding first inclined blocks (7042), so that the two rotating rods (7041) rotate, the push rods (7022) move towards the fixed blocks (602) under the limiting conditions of the two guide rods (7052), and therefore the push blocks (7024) are matched with clamping grooves in the brake block body (7053) to brake the fixed blocks (602) more stably.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110910366.2A CN113620196B (en) | 2021-08-09 | 2021-08-09 | Braking device for vertical direction of crane and working method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110910366.2A CN113620196B (en) | 2021-08-09 | 2021-08-09 | Braking device for vertical direction of crane and working method thereof |
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| Publication Number | Publication Date |
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| CN113620196A true CN113620196A (en) | 2021-11-09 |
| CN113620196B CN113620196B (en) | 2023-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110910366.2A Active CN113620196B (en) | 2021-08-09 | 2021-08-09 | Braking device for vertical direction of crane and working method thereof |
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| CN (1) | CN113620196B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1449355A (en) * | 2001-06-29 | 2003-10-15 | 三菱电机株式会社 | Elevator emergency brake device |
| CN206799061U (en) * | 2017-05-27 | 2017-12-26 | 白振松 | Crane braking device |
| CN207226721U (en) * | 2017-08-31 | 2018-04-13 | 河南省国泰安信息技术有限公司 | Elevator safety protection device |
| CN208022630U (en) * | 2018-01-05 | 2018-10-30 | 辛志民 | A kind of brake gear of crane spool |
| CN211733702U (en) * | 2019-12-16 | 2020-10-23 | 张伟 | Hydraulic operated haulage winch |
| CN211733706U (en) * | 2020-01-20 | 2020-10-23 | 徐州市凯诺机械有限公司 | Mechanical equipment hoisting device with automatic limiting function |
-
2021
- 2021-08-09 CN CN202110910366.2A patent/CN113620196B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1449355A (en) * | 2001-06-29 | 2003-10-15 | 三菱电机株式会社 | Elevator emergency brake device |
| CN206799061U (en) * | 2017-05-27 | 2017-12-26 | 白振松 | Crane braking device |
| CN207226721U (en) * | 2017-08-31 | 2018-04-13 | 河南省国泰安信息技术有限公司 | Elevator safety protection device |
| CN208022630U (en) * | 2018-01-05 | 2018-10-30 | 辛志民 | A kind of brake gear of crane spool |
| CN211733702U (en) * | 2019-12-16 | 2020-10-23 | 张伟 | Hydraulic operated haulage winch |
| CN211733706U (en) * | 2020-01-20 | 2020-10-23 | 徐州市凯诺机械有限公司 | Mechanical equipment hoisting device with automatic limiting function |
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| CN113620196B (en) | 2023-03-31 |
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Address after: 231600 intersection of Liaoyuan road and Daihe Road, Feidong Economic Development Zone, Hefei City, Anhui Province Applicant after: Anhui Jangho Intelligent Equipment Group Co.,Ltd. Address before: 230000 intersection of Liaoyuan road and Daihe Road, Feidong Economic Development Zone, Hefei City, Anhui Province Applicant before: Anhui Chunhua Intelligent Technology Co.,Ltd. |
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