Walking device of gantry crane trolley
By designing anti-tilt wheels and movable wheels on the gantry crane, the problem of rolling and wear during single-side lifting is solved, and the stability and safety of the trolley are improved.
Patent Information
- Application Number
- CN202421083349.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-17
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-05-17
AI Technical Summary
Existing gantry cranes are prone to roll when lifting heavy objects on one side, resulting in wear of the rim of the wheel, which poses safety hazards.
Design a walking device, including a walking wheel and an anti-tilt wheel. The walking wheel is close to the lifting side of the heavy object, the anti-tilt wheel is far away from the lifting side, the anti-tilt wheel rolls on the lower surface of the cross beam, and the movement direction is the same as the walking wheel to avoid small cars. Roll.
It effectively avoids the tiller roll during lifting, reduces the wear of the tiller, and improves the stability and safety of the tiller.
Smart Images
Figure CN222498412U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cranes, in particular to a traveling device of a gantry crane trolley. Background Art
[0002] The gantry crane is also called a portal crane. The gantry crane is driven by left and right trolleys to move the entire gantry crane (for example, it is called longitudinal movement). The trolley installed on the top beam of the gantry crane is used to lift heavy objects. At the same time, the trolley can move on the beam of the gantry crane, and the moving direction is perpendicular to the moving direction of the trolley (for example, it is called lateral movement), so that the entire gantry crane can lift heavy objects in different horizontal and vertical positions in the horizontal plane.
[0003] The trolley moves on the top beam of the gantry crane via its wheels (moving along the track fixed on the top surface of the beam), but heavy objects are often lifted on one side of the trolley, and the trolley runs for a long time and is busy, and the center of gravity of the trolley tends to tilt to one side, so the rims of the wheels of the trolley are very easy to wear. In the prior art, horizontal guide wheels are installed on the trolley on both sides of the track to prevent the wheels from shifting when running, thereby effectively reducing the hard friction and mechanical wear between the wheel rims of the trolley and the track during operation, which helps to stabilize the trolley during operation and reduce the damage caused by rail gnawing during the operation of the trolley.
[0004] However, since the trolley lifts heavy objects on one side, it is easy to tilt. Once the trolley tilts, it will bring great safety hazards. Although the horizontal guide wheels on both sides of the current running wheel clamp the track and have a certain ability to prevent tilting, they can avoid major safety accidents. However, once tilting occurs, the force on both sides of the track is uneven, which is still easy to cause wear of the running wheel. Utility Model Content
[0005] The utility model aims to provide a traveling device for a gantry crane trolley, so as to solve the problem that the traveling wheels are easily worn due to the side tilt after horizontal guide wheels are installed on both sides of the traveling wheels of the trolley.
[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0007] A traveling device of a gantry crane trolley includes a traveling wheel and an anti-tilt wheel connected to the bottom of the trolley body, the traveling wheel is close to the lifting side of the heavy object, and the anti-tilt wheel is away from the lifting side of the heavy object. The anti-tilt wheel is rotatably connected to the bottom of the body, and the anti-tilt wheel is used to roll on the lower surface of the crossbeam of the gantry crane, and the moving direction of the anti-tilt wheel is the same as that of the traveling wheel.
[0008] The principle and advantage of this solution are: when this solution is adopted, the running wheels run on the track on the top surface of the beam, and the anti-tilt wheels away from the lifting side roll on the lower surface of the beam, that is, one wheel runs on the upper surface and the other wheel runs on the lower surface. Since the anti-tilt wheels are away from the lifting side, when lifting heavy objects, the trolley has a tilting force toward the side of the heavy object. At this time, due to the setting of the anti-tilt wheels, the anti-tilt wheels clamp the beam, and the force of clamping the beam is used to avoid the trolley from tilting during lifting, thereby reducing or even avoiding the problem of wear of the running wheels caused by uneven force on the tilting.
[0009] Preferably, as an improvement, a wear-resistant plate is fixed or a wear-resistant coating is provided on the lower surface of the cross beam that contacts the anti-tilt wheel.
[0010] Beneficial effect: This solution can effectively reduce the friction between the anti-tilt wheel and the crossbeam, reduce wear, and thus extend the service life of the anti-tilt wheel and the crossbeam.
[0011] Preferably, as an improvement, a U-shaped auxiliary box is fixedly installed at the bottom of the vehicle body, the anti-roll wheel is rotatably connected in the U-shaped structure of the auxiliary box, and the anti-roll wheel protrudes out of the auxiliary box to ensure the stability of the anti-roll wheel installation.
[0012] Preferably, as an improvement, the number of the anti-tilt wheels is two to further improve the anti-tilt effect.
[0013] Preferably, as an improvement, the two anti-tip wheels are both rotatably connected to the auxiliary box.
[0014] Preferably, as an improvement, the auxiliary box is detachably connected to the vehicle body, so that after the anti-roll wheel is damaged, the auxiliary box can be removed to replace the anti-roll wheel.
[0015] Preferably, as an improvement, it also includes an anti-tilt hook detachably connected to the vehicle body, the anti-tilt hook being close to the lower surface of the cross beam.
[0016] Preferably, as an improvement, horizontal guide wheels are provided on both sides of the running wheel, the horizontal guide wheels are symmetrically arranged with respect to the running wheel, and the horizontal guide wheels can roll on the side of the track.
[0017] Beneficial effect: Horizontal guide wheels are arranged on both sides of the running wheel to ensure that the trolley runs stably on the track and prevent the trolley from deviating from the track during movement. The horizontal guide wheels are arranged symmetrically about the running wheel, so that the trolley can obtain good guiding effect in both the horizontal and vertical directions.
[0018] Preferably, as an improvement, the horizontal guide wheel is rotatably connected to the vehicle body via a self-aligning bearing.
[0019] Beneficial effect: The horizontal guide wheel is rotatably connected to the vehicle body through a self-aligning bearing, which can automatically adjust the position of the guide wheel to ensure that the guide wheel always keeps in contact with the side of the track, thereby improving the guiding accuracy and driving stability of the trolley.
[0020] Preferably, as an improvement, there are two running wheels, each of which corresponds to two symmetrically arranged horizontal guide wheels, and the running wheel is located between the horizontal guide wheels. This solution enables the running wheel to move at the front end of the forward or backward movement through the horizontal guide wheels, ensuring the driving stability and helping to increase the service life of the running wheel. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of the gantry crane trolley after being installed on the gantry crane according to an embodiment of the utility model.
[0022] Figure 2 for Figure 1 Left view of .
[0023] Figure 3 For Figure 1 Only the three-dimensional structural diagram of the trolley body, the traveling device of the gantry crane trolley, the track and the crossbeam is shown.
[0024] Figure 4 for Figure 3 Left view of .
[0025] Figure 5 for Figure 3 main view.
[0026] Figure 6 for Figure 3 Rear view of.
[0027] Figure 7 for Figure 3 Schematic diagram of the structure after removing the beams and tracks.
[0028] Figure 8 for Figure 7 Bottom view of .
[0029] Fig. 9 It is a three-dimensional structural schematic diagram showing only the anti-tilt wheel, anti-tilt hook, auxiliary box and connecting block.
[0030] Fig.10 It is a schematic diagram showing the three-dimensional structure of only the anti-roll wheel and the auxiliary box. DETAILED DESCRIPTION
[0031] The following is further described in detail through specific implementation methods:
[0032] The figure marks in the drawings of the specification include: cross beam 10, track 11, cart 20, weight 30, trolley 40, car body 1, running wheel 2, drive motor 3, auxiliary box 4, anti-tilt wheel 5, connecting block 6, anti-tilt hook 7, horizontal guide wheel 8.
[0033] Example
[0034] Combination Figures 1 to 10 As shown, a traveling device of a gantry crane trolley is installed on the crossbeam 10 of the gantry crane. The crossbeam 10 of the gantry crane is supported by two movable trolleys 20 on the left and right. The trolley 40 lifts a heavy object 30 on the side. The traveling device of the gantry crane trolley 40 includes a running wheel 2 rotating on a body 1. The running wheel 2 is driven by a driving motor 3 installed on the body 1 of the trolley 40. The running wheel 2 is used to move along a track 11 fixed on the crossbeam 10.
[0035] A U-shaped auxiliary box 4 is installed at the bottom of the vehicle body 1 away from the running wheel 2, the U-shaped opening of the auxiliary box 4 faces upward, and two anti-tilt wheels 5 are rotatably connected in the U-shaped structure of the auxiliary box 4, and the anti-tilt wheels 5 protrude from the opening of the auxiliary box 4. Specifically, the auxiliary box 4 is fixedly installed on a connection block 6, and the top of the connection block 6 is detachably connected to the vehicle body 1 by bolts.
[0036] The connecting line of the two anti-tilt wheels 5 is parallel to the track 11, the running wheel 2 is close to the lifting side of the heavy object 30, and the anti-tilt wheel 5 is away from the lifting side of the heavy object 30. The anti-tilt wheel 5 is used to roll on the lower surface of the beam 10 of the gantry crane, and the moving direction of the anti-tilt wheel 5 is the same as that of the running wheel 2.
[0037] A wear-resistant plate is fixed or a wear-resistant coating is provided on the lower surface of the cross beam 10 that contacts the anti-tilt wheel 5 .
[0038] The bottom of the vehicle body 1 is provided with a detachable anti-tilt hook 7 by bolts. There are two anti-tilt hooks 7, which are located on the outside of the anti-tilt wheel 5. When the auxiliary box 4 (connecting block 6) with the anti-tilt wheel 5 is disassembled and assembled, the anti-tilt hooks 7 can ensure that even if the trolley 40 tilts toward the lifting side, the anti-tilt hooks 7 can hook the lower surface of the crossbeam 10 before the anti-tilt wheel 5 is installed, thereby ensuring safety.
[0039] Horizontal guide wheels 8 are provided on both sides of the running wheel 2, and the horizontal guide wheels 8 are symmetrically arranged about the running wheel 2. The horizontal guide wheels 8 can roll on the side of the track 11, and the horizontal guide wheels 8 are used to contact the side of the top of the track 11. Because the track 11 is generally an I-beam structure, the top side is stronger than the middle of the track 11, and it is also the position where the wheel rim of the running wheel 2 is prone to gnawing the track. The horizontal guide wheels 8 contact at this position, which can help the stability of the trolley and reduce the impact on the track 11. The horizontal guide wheels 8 are rotatably connected to the car body 1 through the provided self-aligning bearings, and the running wheel 2 is also rotatably connected to the car body 1 through the self-aligning bearings.
[0040] There are two running wheels 2 , each of which corresponds to two symmetrically arranged horizontal guide wheels 8 , and the running wheel 2 is located between the horizontal guide wheels 8 .
[0041] When this embodiment is adopted, when the trolley 40 is traveling with a load, the trolley 40 tends to tilt toward the side of the heavy object 30. At this time, the center of gravity of the trolley 40 is biased toward the side of the running wheel 2, so that the anti-tilt wheel 5 is against the wear-resistant position of the beam 10, and the anti-tilt wheel 5 and the running wheel 2 move up and down on the beam 10, thereby ensuring that the trolley 40 will not tip over during the unilateral load-carrying process, which ensures safety while also helping to reduce the wear of the running wheel 2.
[0042] When the trolley 40 is traveling, no matter in which direction the track 11 moves, the paired horizontal guide wheels 8 are always at the front end. The guidance of the horizontal guide wheels 8 at the front end ensures that the running wheels 2 travel in the designed manner, which not only ensures the driving stability, but also greatly reduces or even avoids the phenomenon of the running wheels 2 gnawing the rails, thereby helping to extend the service life of the running wheels 2.
[0043] In addition, when the anti-tilt wheel 5 needs to be replaced due to wear, it is only necessary to remove the entire connecting block 6 with the anti-tilt wheel 5 and the auxiliary box 4 from the vehicle body 1. After the new anti-tilt wheel 5 is installed in the auxiliary box 4 again, the connecting block 6 is fixedly connected to the vehicle body 1. This embodiment makes the disassembly and assembly of the anti-tilt wheel 5 simple and convenient. After the anti-tilt wheel 5 is removed, the anti-tilt hook 7 can also hook the lower surface of the cross beam 10 when the vehicle body 1 tilts toward the walking wheel 2 side, thereby ensuring safety.
[0044] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.
Claims
1. A traveling device of a gantry crane trolley, comprising a traveling wheel, characterized in that: It also includes an anti-tipping wheel connected to the bottom of the trolley body, the running wheel is close to the lifting side of the heavy object, and the anti-tipping wheel is away from the lifting side of the heavy object. The anti-tipping wheel is rotatably connected to the bottom of the body, and the anti-tipping wheel is used to roll on the lower surface of the beam of the gantry crane. The moving direction of the anti-tipping wheel is the same as that of the running wheel.
2. The traveling device of a gantry crane trolley according to claim 1, characterized in that: A wear-resistant plate is fixed on the lower surface of the cross beam that contacts the anti-tilt wheel, or a wear-resistant coating is provided.
3. The traveling device of a gantry crane trolley according to claim 2, characterized in that: A U-shaped auxiliary box is fixedly installed at the bottom of the vehicle body, and the anti-tilt wheel is rotatably connected in the U-shaped structure of the auxiliary box, and the anti-tilt wheel protrudes out of the auxiliary box.
4. The traveling device of a gantry crane trolley according to claim 3, characterized in that: The number of the anti-tip wheels is two.
5. The traveling device of a gantry crane trolley according to claim 4, characterized in that: The two anti-tilt wheels are both rotatably connected to the auxiliary box.
6. The traveling device of a gantry crane trolley according to claim 5, characterized in that: The auxiliary box is detachably connected to the vehicle body.
7. The traveling device of a gantry crane trolley according to claim 1, characterized in that: It also includes an anti-tilt hook which is detachably connected to the vehicle body and is close to the lower surface of the crossbeam.
8. A traveling device of a gantry crane trolley according to any one of claims 1 to 7, characterized in that: Horizontal guide wheels are arranged on both sides of the running wheel, the horizontal guide wheels are symmetrically arranged about the running wheel, and the horizontal guide wheels can roll on the side of the track.
9. The traveling device of a gantry crane trolley according to claim 8, characterized in that: The horizontal guide wheel is rotatably connected to the vehicle body via a self-aligning bearing.
10. The traveling device of a gantry crane trolley according to claim 8, characterized in that: There are two running wheels, each of which corresponds to two symmetrically arranged horizontal guide wheels, and the running wheel is located between the horizontal guide wheels.