Deviation rectifying device for bridge crane
By installing a correction device on the bridge crane and adjusting the speed of the drive motor using an encoder and a frequency converter, the wear problem caused by the misalignment of the two longitudinal moving beams was solved, and the automatic correction and normal operation of the equipment were realized.
Patent Information
- Application Number
- CN202423276948.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-30
AI Technical Summary
When the two longitudinal moving beams of a bridge crane move out of alignment, it causes severe wear on the traveling wheels and guide rails, and may even cause the crane to jam.
A correction device is adopted, which forms a closed-loop control system through the main traveling wheel, free wheel and encoder. The encoder counts the number of revolutions of the traveling wheel and adjusts the speed of the drive motor to keep the traveling speed on both sides consistent and prevent deviation.
Automatic deviation control of the bridge crane was achieved, avoiding wear on the traveling wheels and guide rails and ensuring normal operation of the equipment.
Smart Images
Figure CN223592288U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a crane technical field, concretely relates to a bridge crane deviation rectifying device. BACKGROUND
[0002] In prior art, two longitudinal moving beams are arranged on the two sides of the crane, a transverse moving beam is arranged between the two longitudinal moving beams, the crane is installed on the transverse moving beam, and the crane moves left and right on the transverse moving beam under the control of the longitudinal moving beams. When the crane hoists a heavy object, the transverse moving beam moves left and right along the guide rail, and the longitudinal moving beam on one side is close to the other longitudinal moving beam, so that the moving beam on the side bears greater load, thereby causing the speed difference of the two longitudinal moving beams of the crane, that is, the longitudinal moving beam on one side moves faster, and the longitudinal moving beam on the other side moves slower, and the two longitudinal moving beams are deviated.
[0003] If the two longitudinal moving beams continuously move in the deviated state, the walking wheels and the guide rail will be seriously worn, the service life is affected, and the phenomenon of direct stop may even occur in serious cases. SUMMARY
[0004] The utility model discloses a bridge crane deviation rectifying device.
[0005] The utility model is through following technical scheme realizes: a bridge crane deviation rectifying device, including the walking rail of crane left and right two sides, each walking rail is equipped with a walking beam, and one end of walking beam is equipped with main walking wheel, and the other end is equipped with from walking wheel, wherein main walking wheel is connected with the output shaft of drive motor, and main walking wheel and from walking wheel are all clamped in walking rail and are connected with walking rail rolling, characterized by, main walking wheel and from walking wheel are equipped with deviation rectifying device between, and deviation rectifying device includes freewheel, and freewheel is connected with walking rail rolling, and one side of freewheel is equipped with encoder, and encoder is installed on walking beam through support, and encoder is connected with controller, and the output end of controller is connected frequency converter, and the output of frequency converter is connected drive motor.
[0006] Further, the main walking wheel, the freewheel and the from walking wheel are on the same center line.
[0007] Further, the two walking rails are symmetrically provided with reset sensors at the starting ends.
[0008] Further, the main walking wheel is provided with an anti-skid rubber ring.
[0009] Further, the main walking wheel, the from walking wheel, the freewheel, the encoder and the drive motor are two, respectively symmetrically installed on the left and right walking beams.
[0010] The utility model discloses an advantageous effect is: the utility model discloses a walking wheel on the same center line with main walking wheel is set up, and the number of turns of walking wheel tangential with it is counted by using encoder, and then the speed of drive motor is converted by controller, and then compared with the set speed, and the rotational speed of drive motor is further adjusted by using controller control frequency converter, make the walking speed of both sides and set value always keep consistent, and the generation of deviation phenomenon is prevented.
[0011] The utility model discloses simple structure, control nimble, convenient to use. DRAWINGS
[0012] Fig. 1 It is the structure schematic drawing of the utility model;
[0013] Fig. 2 It is the structure principle block diagram of the utility model;
[0014] In the drawings, 1 walking rail, 2 walking beam, 201 main walking wheel, 202 drive motor, 203 free wheel, 204 from walking wheel, 3 encoder, 4 controller, 5 frequency converter, 6 reset sensor. DETAILED DESCRIPTION
[0015] In order to make the purpose, technical scheme and beneficial effect of the utility model more clearly, the technical scheme in the utility model is further explained below with examples.
[0016] As Figs. 1-2 Shown, a bridge crane deviation rectifying device, including crane left and right two sides walking rail 1, each walking rail 1 on the walking beam 2 is equipped with, walking beam 2 one end is equipped with main walking wheel 201, the other end is equipped with from walking wheel 204, wherein main walking wheel 201 is connected with the output shaft of drive motor 202, main walking wheel 201 and from walking wheel 204 are all clamped on walking rail 1 and are connected with walking rail 1 and roll, main walking wheel 201 and from walking wheel 204 between still be equipped with deviation rectifying device, deviation rectifying device includes free wheel 203, free wheel 203 is connected with walking rail 1 and rolls, the side of free wheel 203 is equipped with encoder 3, encoder 3 is tangential with free wheel 203 and is arranged, encoder 3 adopts pulse encoder 3, namely free wheel 203 rotates a circle, and encoder 3 corresponds to rotate a circle and counts once, the movement displacement of main walking wheel 201 is calculated using encoder 3, encoder 3 is installed on walking beam 2 through support, support usually adopts H-shaped frame, encoder 3 is connected with controller 4, the output end of controller 4 is connected with frequency converter 5, and the output of frequency converter 5 is connected with drive motor 202, and controller 4 adopts programmable logic controller 4, namely PLC, and PLC controls both sides frequency converter 5 and corresponding drive motor and is connected with the encoder 3 installed on free wheel 203 and constitutes closed loop control system.
[0017] The main walking wheel 201, the free wheel 203 and the slave walking wheel 204 are on the same center line.
[0018] The two walking rails 1 are symmetrically provided with a reset sensor 6 at the starting end, that is, when the walking beam 2 walks on the walking rail 1 for one round and returns to the initial position, the reset sensor 6 senses the walking beam 2 and transmits a signal to the controller 4, and the controller 4 resets and clears the count of the encoder 3.
[0019] In order to prevent the main walking wheel 201 from slipping on the walking rail 1, the main walking wheel 201 is provided with an anti-skid rubber ring.
[0020] The main walking wheel 201, the slave walking wheel 204, the free wheel 203, the encoder 3 and the driving motor 202 are all two, which are symmetrically installed on the left and right walking beams 2.
[0021] When the crane is installed with the correction device, when the goods need to be moved horizontally, the driving motors 202 on the left and right walking beams 2 are started at the same time, the left driving motor 202 drives the main walking wheel 201 to walk forward along the walking rail 1, and the slave walking wheel 204 and the free wheel 203 are also driven to walk along the walking rail 1 under the driving of the main walking wheel 201, at this time, the encoder 3 arranged on the free wheel 203 starts to count the number of rounds of the free wheel 203 and transmits the data to the controller 4, which is converted into the speed of the driving motor 202 through internal processing of the controller 4, and the right side is the same, the controller 4 compares the speed of the left and right driving motors 202 with the set speed, and then sends instructions to the frequency converter 5, which adjusts the speed of the driving motor 202 to make the left and right driving motors 202 run at the same speed, so as to prevent the left and right walking beams 2 from deviating on the walking rail 1, and realize automatic correction control.
[0022] In addition to the technical features described in the specification, the remaining technical features are known to those skilled in the art.
Claims
1. A bridge crane correction device, comprising travel rails (1) on the left and right sides of the crane, each travel rail (1) having a travel beam (2), one end of the travel beam (2) having a main travel wheel (201) and the other end having a driven travel wheel (204), wherein the main travel wheel (201) is connected to the output shaft of a drive motor (202), and both the main travel wheel (201) and the driven travel wheel (204) are engaged on the travel rails (1) and rolled in connection with the travel rails (1), characterized in that, A correction device is also provided between the main traveling wheel (201) and the secondary traveling wheel (204). The correction device includes a free wheel (203), which is tumblingly connected to the traveling rail (1). An encoder (3) is provided on one side of the free wheel (203). The encoder (3) is mounted on the traveling beam (2) by a bracket. The encoder (3) is connected to the controller (4). The output end of the controller (4) is connected to the frequency converter (5). The output of the frequency converter (5) is connected to the drive motor (202).
2. The bridge crane correction device according to claim 1, characterized in that, The main traveling wheel (201), the free wheel (203), and the secondary traveling wheel (204) are on the same center line.
3. The bridge crane correction device according to claim 1, characterized in that, Reset sensors (6) are symmetrically located at the beginning of the two sides of the travel rail (1).
4. The bridge crane correction device according to claim 1, characterized in that, The main travel wheel (201) is covered with an anti-slip rubber ring.
5. A bridge crane alignment device according to claim 1, characterized in that, The main traveling wheel (201), the secondary traveling wheel (204), the free wheel (203), the encoder (3) and the drive motor (202) are all in pairs, and are symmetrically installed on the left and right traveling beams (2) respectively.