CN211496661U - Upright post lifting type movable gantry crane - Google Patents

Upright post lifting type movable gantry crane Download PDF

Info

Publication number
CN211496661U
CN211496661U CN201921771972.5U CN201921771972U CN211496661U CN 211496661 U CN211496661 U CN 211496661U CN 201921771972 U CN201921771972 U CN 201921771972U CN 211496661 U CN211496661 U CN 211496661U
Authority
CN
China
Prior art keywords
driving wheel
lifting
gantry crane
column
slewing bearing
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
Application number
CN201921771972.5U
Other languages
Chinese (zh)
Inventor
郦东兵
戚国良
钮浥林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Changzhou Well Tech Technologies Co ltd
Original Assignee
Changzhou Well Tech Technologies Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Changzhou Well Tech Technologies Co ltd filed Critical Changzhou Well Tech Technologies Co ltd
Priority to CN201921771972.5U priority Critical patent/CN211496661U/en
Application granted granted Critical
Publication of CN211496661U publication Critical patent/CN211496661U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model relates to a stand over-and-under type removes portal crane, stand and the hanging beam of installing at two stand tops including two parallel arrangement, and set up the bottom sprag in every stand bottom respectively, the stand includes the cylinder down, and flexible setting is at the last cylinder of cylinder top down, install the lifting assembly on the hanging beam, and the lifting assembly can remove on the hanging beam, the both ends of bottom sprag are provided with the drive wheel respectively, the epaxial transmission of wheel of drive wheel is connected with driving motor, the top of drive wheel is provided with interior tooth-like slewing bearing, interior tooth-like slewing bearing's top is provided with turns to the motor, it turns to the motor to drive the drive wheel through interior tooth-like slewing bearing. The utility model discloses a drive wheel drives and steering control through two motors, can realize 360 all around rotations on the basis of walking alone, has solved narrow and small space and has turned to, the limited problem of traveling to can improve the control accuracy to the drive wheel, it is more convenient to use.

Description

Upright post lifting type movable gantry crane
Technical Field
The utility model belongs to the technical field of wind energy blade carries, concretely relates to stand over-and-under type removes gantry crane.
Background
In the moving process of the wind energy blade, moving tools such as a gantry crane are needed, a driving wheel system of the traditional gantry crane is mainly completed by driving a steering connecting rod by a steering machine in the steering process, only a steering angle of 45 degrees at the left and the right can be realized, and when the wind energy blade can convey large-sized workpieces, the wind energy blade has great limitation on steering driving in narrow and small areas and is extremely inconvenient to use.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a stand over-and-under type removes longmen crane to solve the limited problem of steering angle.
The utility model discloses a stand over-and-under type removes gantry crane realizes like this:
the utility model provides a stand over-and-under type removes gantry crane, includes two parallel arrangement's stand and installs the hanging beam at two stand tops to and set up the bottom sprag in every stand bottom respectively, the stand includes down the cylinder, and flexible setting is in the last cylinder of cylinder top down, install on the hanging beam and lift by crane the subassembly, just it can to lift by crane the subassembly remove on the hanging beam, the both ends of bottom sprag are provided with the drive wheel respectively, the epaxial transmission of wheel of drive wheel is connected with driving motor, the top of drive wheel is provided with interior tooth-like slewing bearing, interior tooth-like slewing bearing's top is provided with the motor that turns to, it drives through interior tooth-like slewing bearing to turn to the motor the drive wheel turns to.
Furthermore, a driving wheel support is arranged above the inner tooth type slewing bearing, an installation bottom plate is arranged above the inner tooth type slewing bearing, an inner ring of the inner tooth type slewing bearing is connected with the driving wheel support, and an outer ring of the inner tooth type slewing bearing is connected with the installation bottom plate.
Furthermore, the driving wheel is installed on the outer side of the driving wheel support, the driving motor is installed on the inner side of the driving wheel support, and the driving motor is connected with a wheel shaft of the driving wheel through a speed reducer I.
Furthermore, the steering motor is installed on the installation bottom plate, a gear meshed with the inner ring of the inner tooth type slewing bearing is arranged below the installation bottom plate, and the steering motor is in transmission connection with the gear through a speed reducer II.
Furthermore, the front end and the rear end of the driving wheel support are provided with auxiliary universal wheels relatively.
Furthermore, a hydraulic cylinder is arranged in the lower cylinder body, and the end part of a piston rod of the hydraulic cylinder is connected with the upper cylinder body.
Furthermore, the upper end of lower cylinder is provided with the pin, the surface of going up the cylinder is provided with the pinhole, the pin can pass lower cylinder and stretch into in the pinhole.
Furthermore, the lifting assembly comprises a lifting box and a hydraulic rod arranged on one side of the lifting box, the telescopic direction of the hydraulic rod is the same as the length direction of the lifting beam, and the lifting box is slidably mounted on the lifting beam through the telescopic of the hydraulic rod.
Furthermore, shockproof frames are arranged on two sides of the lifting box, and a damping spring is arranged between the shockproof frames and the lifting box.
Furthermore, a cross frame is arranged between the two bottom supports, and a hydraulic system and an electric cabinet are installed on the cross frame.
After the technical scheme is adopted, the utility model discloses the beneficial effect who has does:
(1) the driving wheel of the utility model respectively adopts two motors to realize walking and steering driving, thereby each driving wheel can realize 360 degrees of all-directional rotation on the basis of independent walking, the problems of steering in narrow space and limited driving are solved, the control precision of the driving wheel can be improved, and the use is more convenient;
(2) the hanging beam of the utility model can realize height adjustment through the lifting of the upright post, thereby realizing the random adjustment of the height of the gantry crane according to the requirement, reducing the limitation of operation and increasing the application range;
(3) the utility model discloses a drive wheel is realized to interior tooth-like slewing bearing turns to the transmission, compares in leading to radial outer tooth-like slewing bearing, can increase the bearing capacity of driving wheel system to guarantee the stability when drive wheel turns to and walks.
Drawings
The present invention will be further explained with reference to the drawings and examples.
FIG. 1 is a block diagram of a column lift type mobile gantry crane according to a preferred embodiment of the present invention;
FIG. 2 is a structural diagram of the column lifting type mobile gantry crane according to the preferred embodiment of the present invention;
FIG. 3 is an enlarged view of portion A of FIG. 2;
FIG. 4 is a top view of the column lift type mobile gantry crane according to the preferred embodiment of the present invention;
FIG. 5 is a cross-sectional view of portion B-B of FIG. 4;
FIG. 6 is a block diagram of a drive wheel system of the column lift type mobile gantry crane according to the preferred embodiment of the present invention;
FIG. 7 is a block diagram of a drive wheel system of the column lift type mobile gantry crane according to the preferred embodiment of the present invention;
FIG. 8 is an exploded view of a portion of the drive wheel system of the column lift type mobile gantry crane according to the preferred embodiment of the present invention;
FIG. 9 is an exploded view of a portion of the drive wheel system of the column lift type mobile gantry crane according to the preferred embodiment of the present invention;
FIG. 10 is a structural view of a driving wheel support of the column lifting type mobile gantry crane according to the preferred embodiment of the present invention;
in the figure: the device comprises an upright post 1, a lower column 11, an upper column 12, a hydraulic cylinder 13, a pin 14, a pin hole 15, a hanging beam 2, a hoisting assembly 21, a hoisting box 22, a hydraulic rod 23, a pulley 24, a reinforcing plate 25, a shockproof frame 26, a damping spring 27, a lifting hook 28, a bottom support 3, a driving wheel 31, a driving motor 32, an internal tooth type slewing bearing 33, a steering motor 34, a driving wheel support 35, a mounting bottom plate 36, a top plate 37, a side plate 38, an end plate 39, a side beam 310, a mounting hole 311, a speed reducer I312, a through hole I313, a mounting groove I314, a reinforcing rib 315, a gear 316, a speed reducer II 317, a through hole II 318, a mounting groove II 319, an auxiliary universal wheel 320, an auxiliary wheel mounting plate 321, a lightening hole 322, a protective cover 323, a transverse.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1-10, an upright lifting type movable gantry crane includes two parallel uprights 1, a hanging beam 2 installed on the top of each upright 1, and a bottom support 3 respectively installed at the bottom of each upright 1, the upright 1 includes a lower cylinder 11, and an upper cylinder 12 telescopically installed above the lower cylinder 11, a lifting assembly 21 is installed on the hanging beam 2, and the lifting assembly 21 can move on the hanging beam 2, driving wheels 31 are respectively installed at two ends of the bottom support 3, a driving motor 32 is connected to a wheel shaft of the driving wheel 31 in a transmission manner, an internal tooth type slewing bearing 33 is installed above the driving wheel 31, a steering motor 34 is installed above the internal tooth type slewing bearing 33, and the steering motor 34 drives the driving wheel 31 to steer through the internal tooth type slewing bearing 33.
Preferably, the driving motor 32 and the steering motor 34 are servo motors with control precision, so that the gantry crane can be operated more conveniently in use.
Referring to fig. 6-10, the internal tooth type slewing bearing 33 is used for transmitting the torque of the steering motor 34 to the driving wheel 31 so as to drive the driving wheel 31 to steer, and for the convenience of mounting the internal tooth type slewing bearing 33, a driving wheel bracket 35 is arranged above the internal tooth type slewing bearing 33, a mounting base plate 36 is arranged above the internal tooth type slewing bearing, and the inner ring of the internal tooth type slewing bearing 33 is connected with the driving wheel bracket 35 and the outer ring is connected with the mounting base plate 36.
Specifically, the driving wheel mounting frame 35 includes a top plate 37, and a support frame installed below the top plate 37, the support frame includes side plates 38 and end plates 39 disposed at both ends of the side plates 38, and a side member 310 disposed between the two end plates 39 and opposite to the side plates 38, the side member 310 being connected to the top plate 37.
The support frame consisting of the side plates 38, the end plates 39 and the side beams 310 is perpendicular to the top plate 37, so that the top plate 37 can be supported, and the bearing capacity of the whole driving wheel 31 is increased.
Preferably, to facilitate the installation of the internal tooth type slewing bearing 33, the mounting bottom plate 36 and the top plate 37 are both provided with mounting holes 311 in an annular shape, the inner ring of the internal tooth type slewing bearing 33 is installed on the mounting hole 311 of the top plate 37 through a bolt, and the outer ring of the internal tooth type slewing bearing 33 is also installed on the mounting hole 311 of the mounting bottom plate 36 through a bolt.
In order to provide driving force for the driving wheel 31, the driving wheel 31 is installed on the outer side of the driving wheel bracket 35, the driving motor 32 is installed on the inner side of the driving wheel bracket 35, and the driving motor 32 is connected with the axle of the driving wheel 31 through a speed reducer I312.
Specifically, the driving wheel 31 is installed on the outer side of the side plate 38, and the speed reducer i 312 is installed inside an inner side supporting frame of the side plate 38, so that the occupied space of the whole driving wheel system can be relatively reduced, and the installation and the use are more convenient.
Preferably, the reducer i 312 is an L-shaped planetary reducer in order to improve the running stability and the load capacity of the driving wheel 31. The L-shaped planetary reducer is a three-level reducer with high reduction ratio, and the high reduction ratio can increase the stability of the driving wheel.
Preferably, a through hole I313 is formed in the side plate 38, a mounting groove I314 is formed in the periphery of the through hole I313, the speed reducer I312 is mounted in the mounting groove I314, and the output end of the speed reducer I passes through the through hole I313 to be connected with the axle of the driving wheel 31.
The mounting bottom plate 36 is fixed at the end of the bottom support 3, and a plurality of reinforcing ribs 315 are arranged at the joint to prevent deformation.
In order to realize the steering of the driving wheel 31, the steering motor 34 is mounted on the mounting base plate 36, a gear 316 meshed with the inner ring of the internal tooth type slewing bearing 33 is arranged below the mounting base plate 36, and the steering motor 34 is in transmission connection with the gear 316 through a speed reducer II 317.
The steering motor 34 rotates to drive the speed reducer II 317 to rotate, then the speed reducer II 317 drives the gear 316 to rotate, in order to realize the connection between the speed reducer II 317 and the gear 316, a through hole II 318 is arranged on the mounting base plate 36, and the output end of the speed reducer II 317 penetrates through the through hole II 318 to be connected with the gear 316.
Preferably, in order to fix the reducer ii 317 and the steering motor 34, an annular mounting groove ii 319 is provided on the outer ring of the through hole ii 318, and the reducer ii 317 is mounted in the mounting groove ii 319.
Specifically, in the present embodiment, the steering motor 34 is mounted above the reducer ii 317, and the reducer ii 317 is fixed in the mounting groove ii 319 by a bolt, so that the steering motor 34 and the reducer ii 317 are fixed.
In addition, optionally, an L-shaped planetary reducer can be selected as the reducer II 37.
In order to increase the load capacity of the entire driving wheel system and the stability when steering and walking, the front and rear ends of the driving wheel support 35 are provided with auxiliary universal wheels 320 in opposition.
Specifically, the outer side of the end plate 39 is provided with an auxiliary wheel mounting plate 321, and the auxiliary universal wheel 320 is mounted at the bottom of the auxiliary road mounting plate 321.
The two auxiliary universal wheels 320 are symmetrical relative to the mounting point of the driving wheel 31, so that good auxiliary effects on steering and walking of the driving wheel 31 can be achieved, and the stability of the whole driving wheel system is further ensured.
Preferably, the auxiliary wheel mounting plate 321 is perpendicular to the end plate 39.
In order to increase the stability of the connection between the auxiliary wheel mounting plate 321 and the end plate 39 and prevent deformation, a reinforcing rib 315 is provided between the auxiliary wheel mounting plate 321 and the end plate 39.
Preferably, the end plate 39 and the top plate 37 are respectively provided with a circular lightening hole 322, so that the whole weight of the driving wheel system can be correspondingly lightened on the basis of ensuring the bearing capacity of the whole driving wheel system.
The driving wheel 31, the driving motor 32, the steering motor 34, the driving wheel bracket 35, the pivoting support 33 and other structures form a driving wheel system, and in order to increase the protection of the driving wheel system, a protective cover 323 is arranged above the driving wheel 31, the steering motor 34 connected with the driving wheel 31 and the driving motor 32.
In order to adjust the height of the upright 1, a hydraulic cylinder 13 is arranged in the lower column 11, and the end part of a piston rod of the hydraulic cylinder 13 is connected with the upper column 12.
The piston rod of the hydraulic cylinder 13 is arranged upwards, and the extension degree of the upper column body 12 from the lower column body 11 can be realized through the extension and contraction of the piston rod, so that the height of the upright column 1 can be adjusted. Therefore, the application range of the whole gantry crane can be enlarged by the adjusting mode, and the limitation caused by the use environment is reduced.
In order to prevent the upper cylinder 12 from falling when the hydraulic cylinder 13 is out of order, a pin 14 is provided at the upper end of the lower cylinder 11, and a pin hole 15 is provided on the surface of the upper cylinder 12, so that the pin 14 can pass through the lower cylinder 11 and extend into the pin hole 15.
Through the cooperation of pin 14 and pinhole 15, can fix the position of upper cylinder 12, prevent the condition of unexpected falling, guarantee the security performance when using.
The hoisting assembly 21 is used for hoisting workpieces such as wind energy blades and the like, and the positions of hoisting points are required to be adjusted as required due to different sizes or specifications of the hoisted workpieces, so that the hoisting assembly 21 comprises a hoisting box 22 and a hydraulic rod 23 arranged on one side of the hoisting box 22, the telescopic direction of the hydraulic rod 23 is the same as the length direction of the hoisting beam 2, and the hoisting box 22 is slidably mounted on the hoisting beam 2 through the telescopic action of the hydraulic rod 23.
Specifically, the hydraulic rod 23 is installed at one end of the hanging beam 2, a piston rod of the hydraulic rod faces to the middle of the hanging beam 2, pulleys 24 are arranged on two sides of the hoisting box 22, and the pulleys 24 are slidably arranged on the side wall of the hanging beam 2, so that the hydraulic rod 23 extends and retracts to drive the hoisting box 22 to move on the hanging beam 2.
Preferably, in order to increase the carrying capacity of the lifting beam 2, a plurality of reinforcing plates 25 are arranged inside the lifting beam 2.
In order to facilitate the lifting of the workpiece, a hook 28 is mounted below the lifting box 22.
In order to reduce the vibration during the lifting process and ensure the stability during the lifting, two sides of the lifting box 22 are provided with shockproof frames 26, and a damping spring 27 is arranged between the shockproof frames 26 and the lifting box 22.
The piston rod of the hydraulic rod 23 is movably connected to the outer side of the shockproof frame 26 on one side through a nut and the like.
In order to control the hydraulic cylinder 13, the hydraulic rod 23, the driving motor 32 and the steering motor 34 conveniently, a cross frame 324 is arranged between the two bottom supports 3, and a hydraulic system 325 and an electric control box 326 are arranged on the cross frame 324.
Preferably, a plurality of reinforcing ribs 315 are disposed at the connection of the cross frame 324 and the bottom support 2 to prevent the connection from being deformed.
Before the gantry crane is used, the height of the upright post 1 and the position of the hoisting assembly 21 are adjusted as required, and after the wind energy blade is hoisted on the hook 28, when the gantry crane needs to travel, the driving motor 32 is started to drive the driving wheel 31 to rotate. When steering is needed, the steering motor 34 is started, the steering motor 34 drives the gear 316 to rotate, and the gear 316 is meshed with the inner ring of the inner tooth type slewing bearing 33, so that the inner ring of the inner tooth type slewing bearing 33, the driving wheel mounting frame 35 connected with the inner ring and the driving wheel 31 are driven to rotate, and the steering function can be realized. The whole process is simple to operate, is not limited by the use environment, can be moved and turned at will, and is more convenient to use.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (9)

1. The utility model provides a stand over-and-under type removes gantry crane which characterized in that: comprises two upright posts (1) which are arranged in parallel and a hanging beam (2) which is arranged at the top of the two upright posts (1), and bottom supports (3) respectively arranged at the bottom of each upright post (1), wherein each upright post (1) comprises a lower column body (11), and an upper column (12) telescopically arranged above the lower column (11), a hoisting component (21) is arranged on the hoisting beam (2), the lifting component (21) can move on the lifting beam (2), two ends of the bottom support (3) are respectively provided with a driving wheel (31), the wheel shaft of the driving wheel (31) is connected with a driving motor (32) in a transmission way, an inner tooth type slewing bearing (33) is arranged above the driving wheel (31), a steering motor (34) is arranged above the inner tooth type slewing bearing (33), the steering motor (34) drives the driving wheel (31) to steer through the internal tooth type slewing bearing (33);
the upper end of the lower column body (11) is provided with a pin (14), the surface of the upper column body (12) is provided with a pin hole (15), and the pin (14) can penetrate through the lower column body (11) and extend into the pin hole (15).
2. The column lifting type moving gantry crane according to claim 1, wherein a driving wheel support (35) is provided above the inner toothed slewing bearing (33), a mounting base plate (36) is provided above, and an inner ring of the inner toothed slewing bearing (33) is connected to the driving wheel support (35) and an outer ring is connected to the mounting base plate (36).
3. The column lifting type mobile gantry crane according to claim 2, wherein the driving wheel is installed at the outer side of the driving wheel support (35), the driving motor (32) is installed at the inner side of the driving wheel support (35), and the driving motor (32) is connected with the axle of the driving wheel (31) through a speed reducer i (312).
4. The column lifting type movable gantry crane as claimed in claim 3, wherein the steering motor (34) is mounted on the mounting base plate (36), a gear (316) engaged with the inner ring of the inner toothed slewing bearing (33) is arranged below the mounting base plate (36), and the steering motor (34) is in transmission connection with the gear (316) through a speed reducer II (317).
5. The column lifting type mobile gantry crane according to claim 2, wherein the driving wheel support (35) is provided with auxiliary universal wheels (320) at front and rear ends thereof, respectively.
6. The column lifting type mobile gantry crane according to claim 1, wherein a hydraulic cylinder (13) is provided in the lower column (11), and an end of a piston rod of the hydraulic cylinder (13) is connected to the upper column (12).
7. The column lifting type mobile gantry crane according to claim 1, wherein the lifting assembly (21) comprises a lifting box (22) and a hydraulic rod (23) arranged on one side of the lifting box (22), the telescopic direction of the hydraulic rod (23) is the same as the length direction of the lifting beam (2), and the lifting box (22) is slidably mounted on the lifting beam (2) through the telescopic movement of the hydraulic rod (23).
8. The column lifting type mobile gantry crane according to claim 7, wherein shock-proof frames (26) are provided on both sides of the lifting box (22), and a damping spring (27) is provided between the shock-proof frames (26) and the lifting box (22).
9. The column lifting type mobile gantry crane according to claim 1, wherein a cross frame (324) is arranged between the two bottom supports (3), and a hydraulic system (325) and an electric control box (326) are arranged on the cross frame (324).
CN201921771972.5U 2019-10-22 2019-10-22 Upright post lifting type movable gantry crane Active CN211496661U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921771972.5U CN211496661U (en) 2019-10-22 2019-10-22 Upright post lifting type movable gantry crane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921771972.5U CN211496661U (en) 2019-10-22 2019-10-22 Upright post lifting type movable gantry crane

Publications (1)

Publication Number Publication Date
CN211496661U true CN211496661U (en) 2020-09-15

Family

ID=72407157

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201921771972.5U Active CN211496661U (en) 2019-10-22 2019-10-22 Upright post lifting type movable gantry crane

Country Status (1)

Country Link
CN (1) CN211496661U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112357757A (en) * 2020-12-14 2021-02-12 山东晟天钢构有限公司 Navigation vehicle beam assembly and matched navigation vehicle system
CN113955634A (en) * 2021-09-22 2022-01-21 南通鸿歆盛制动系统有限公司 Mobile device of port crane

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112357757A (en) * 2020-12-14 2021-02-12 山东晟天钢构有限公司 Navigation vehicle beam assembly and matched navigation vehicle system
CN113955634A (en) * 2021-09-22 2022-01-21 南通鸿歆盛制动系统有限公司 Mobile device of port crane
CN113955634B (en) * 2021-09-22 2022-03-11 南通鸿歆盛制动系统有限公司 Mobile device of port crane

Similar Documents

Publication Publication Date Title
CN211496661U (en) Upright post lifting type movable gantry crane
CN211366724U (en) Tire walking assembly
CN2410278Y (en) Rail-free screw nut servo telescopic jib mechanism
CN212127287U (en) Electric hoist stable in installation
CN209757334U (en) A move capable car for automobile production line conveying equipment
CN208629007U (en) A kind of turnover device of the auto parts and components processing convenient for adjusting direction
CN210653294U (en) Driving wheel system capable of steering in all directions
CN211169687U (en) Controllable lifting platform
CN213771257U (en) Fixing mechanism for lifting machine
CN215924211U (en) Crane of hoist and mount that multi-angle was adjusted can carry out
CN213445913U (en) Boiler installation overhead hoist
CN215479491U (en) Electric jacking vehicle
CN213141312U (en) Three-fulcrum anti-tipping mechanism of electric forklift
CN211226100U (en) Steering device of electric tire crane
CN214531983U (en) Electric wallboard installing machine
CN110965818B (en) Driving device and control system of universal vehicle platform for stage
CN112062055B (en) Three-fulcrum anti-tipping mechanism of electric forklift
CN216889857U (en) Crane balancing weight processing is with hoist equipment
CN213923814U (en) Cantilever upwarp degree adjusting mechanism for cantilever crane
CN212863914U (en) Overhead travelling crane
CN216005131U (en) Self-walking crank arm type aerial work platform with anti-toppling supporting structure
CN212154254U (en) Adjustable supporting device for building
CN212374744U (en) Low-space manual hoist traveling crane equipment
CN212705143U (en) Welding device for machining automobile chassis parts
CN213015289U (en) Building lifting construction platform

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant