Walking mechanism for portal crane

Abstract

The invention discloses a traveling mechanism for a portal crane, and belongs to the technical field of portal cranes, the traveling mechanism comprises a fixed plate, a track is arranged above the fixed plate, a movable seat assembly is arranged on the outer side of the track, and protective plates are mounted on the two sides of the movable seat assembly; by arranging the lifting damping device, a worker can adjust the overall height of the mechanism to a certain degree by adjusting the relative position between a fixed cylinder and a lifting column when needed, so that the working requirements of the portal crane under different conditions are better met, and the working capacity of the mechanism is improved; according to the portal crane, the lifting damping device is arranged, so that the mechanism can buffer external vibration to a certain degree through cooperation of the damper and the elastic rubber frame when needed, the possibility that the external vibration causes adverse effects on the portal crane is reduced, and the working capacity of the mechanism is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of gantry cranes, and in particular relates to a traveling mechanism for gantry cranes. Background Art

[0002] Gantry crane is a kind of deformation of bridge crane, also called gantry crane. It is mainly used for loading and unloading of outdoor cargo yard, material yard cargo and bulk cargo. Gantry crane has the characteristics of high site utilization, large operating range, wide adaptability and strong versatility, and is widely used in port cargo yards.

[0003] Chinese patent application No. 202223322450.1 discloses a walking mechanism for a gantry crane, which belongs to the technical field of gantry cranes, including a track and a moving seat, the moving seat is slidably arranged on the track, the moving seat is provided with a mounting groove, the track slides through the mounting groove, a driving assembly is arranged in the mounting groove, the driving assembly is used to drive the moving seat to move on the track, a control cavity is arranged on the moving seat, a strip hole is arranged in the mounting groove, and the strip hole is connected with the control cavity; by arranging a rotating wheel, when the track is twisted, the rotating wheel can be blocked, so that the rotating wheel cannot continue to move on the track, and the moving seat continues to move, so that the rotating wheel can move relative to the moving seat, and then the rotating wheel drives the moving rod to move relative to the moving seat through the fixed block, so that the moving rod can squeeze the control switch, and then the driving assembly can be controlled by the control switch, so that the moving seat can be controlled to stop, and the moving seat is prevented from falling off the track, thereby improving safety.

[0004] 1. The above-mentioned disclosed patent has the problem that the staff cannot adjust the overall height of the mechanism when necessary and cannot buffer the vibration when necessary, which makes it difficult to meet the working needs of the gantry crane in different situations, thereby reducing the working capacity of the mechanism; 2. The above-mentioned disclosed patent has the problem that the position of the moving seat on the track cannot be limited when necessary and cannot provide auxiliary lighting when necessary, thereby reducing the practicality of the mechanism. Summary of the invention

[0005] In order to solve the problems raised in the above background technology, the present invention provides a traveling mechanism for a gantry crane, which has the characteristics of high working capacity and strong practicality.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a walking mechanism for a gantry crane, comprising a fixed plate, a track is arranged above the fixed plate, a moving seat assembly is arranged on the outer side of the track, protective plates are installed on both sides of the moving seat assembly, a lifting and shock absorbing device is installed at the upper position of the moving seat assembly, and the fixed plate and the track are connected by a limiting lighting device.

[0007] Preferably, the lifting and shock absorbing device includes a bearing plate, an outer shell, a fixed cylinder, a connecting groove, a lifting column, an electric telescopic rod and a moving frame, a fixed cylinder is installed at an upper position of the moving seat assembly, a lifting column is arranged on the inner side of the fixed cylinder, a plurality of connecting grooves are provided on both sides of the lifting column, electric telescopic rods are installed on both sides of the fixed cylinder and at a position above the moving seat assembly, a moving frame is installed on the outer side of the electric telescopic rod, an outer shell is installed above the lifting column, and a bearing plate is arranged on the inner side of the outer shell.

[0008] Preferably, the shape and size of the inner cross section of the fixed cylinder are the same as the shape and size of the outer cross section of the lifting column, and the inner side of the connecting groove and the outer side of the movable frame are in close contact with each other.

[0009] Preferably, the lifting and shock absorbing device also includes a damper and an elastic rubber frame, the elastic rubber frame is installed between the inner bottom surface of the outer shell and the outer bottom surface of the supporting plate, and a plurality of dampers are installed between the inner bottom surface of the outer shell and the outer bottom surface of the supporting plate and at a position inside the elastic rubber frame.

[0010] Preferably, the lifting and shock absorbing device further comprises screws, and the top of the outer shell and the positions on both sides of the bearing plate are both threadedly mounted with screws.

[0011] Preferably, the position limiting lighting device includes a reduction motor, a screw rod and a limit plate. Two screw rods are arranged between the fixed plate and the track. The reduction motors are installed on both sides adjacent to each other between the two screw rods. The limit plate is installed on the outside of the screw rod and at a position outside the track through a thread.

[0012] Preferably, the position-limiting lighting device further comprises a mesh box, and the mesh box is installed on the outer sides of the two reduction motors.

[0013] Preferably, the position limiting lighting device further comprises a lighting lamp, and the lighting lamp is installed on a side of the position limiting plate away from the movable seat assembly.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention provides a lifting and damping device so that the staff can adjust the overall height of the mechanism by adjusting the relative position between the fixing cylinder and the lifting column when necessary, thereby better meeting the working needs of the gantry crane in different situations and further improving the working capacity of the mechanism.

[0016] 2. The present invention provides a lifting shock absorbing device so that the mechanism can, when necessary, buffer the vibration from the outside world through the cooperation of the damper and the elastic rubber frame, thereby reducing the possibility of adverse effects of external vibration on the gantry crane and further improving the working capacity of the mechanism.

[0017] 3. The present invention provides a limit lighting device so that the staff can limit the movement of the movable seat assembly by two limit plates when necessary, thereby preventing the movable seat assembly from moving to an unnecessary position, and the mechanism can provide auxiliary lighting by a lighting lamp when necessary, thereby improving the practicality of the mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A perspective view of the present invention;

[0019] Figure 2 It is a front view of the present invention;

[0020] Figure 3 It is a structural schematic diagram of the lifting and shock absorbing device of the present invention;

[0021] Figure 4 For the present invention Figure 3 Sectional view in the AA direction;

[0022] Figure 5 For the present invention Figure 3 Cross-sectional view in the BB direction;

[0023] Figure 6 It is a schematic structural diagram of the position limiting lighting device of the present invention.

[0024] In the figure: 1. fixed plate; 2. movable seat assembly; 3. lifting and shock absorbing device; 301. bearing plate; 302. damper; 303. screw; 304. outer shell; 305. fixing cylinder; 306. connecting groove; 307. lifting column; 308. electric telescopic rod; 309. movable frame; 310. elastic rubber frame; 4. protective plate; 5. limit lighting device; 51. mesh box; 52. reduction motor; 53. screw rod; 54. lighting lamp; 55. limit plate; 6. track. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Example 1

[0027] See also Figure 1-6The present invention provides the following technical solutions: a walking mechanism for a gantry crane, comprising a fixed plate 1, a track 6 is arranged above the fixed plate 1, a moving seat assembly 2 is arranged on the outer side of the track 6, protective plates 4 are installed on both sides of the moving seat assembly 2, a lifting and shock absorbing device 3 is installed at the upper position of the moving seat assembly 2, and the fixed plate 1 and the track 6 are connected by a limiting lighting device 5.

[0028] Specifically, the lifting and shock absorbing device 3 includes a bearing plate 301, an outer shell 304, a fixed cylinder 305, a connecting groove 306, a lifting column 307, an electric telescopic rod 308 and a moving frame 309. The fixed cylinder 305 is installed at the upper position of the moving seat assembly 2, and the lifting column 307 is arranged on the inner side of the fixed cylinder 305. A plurality of connecting grooves 306 are provided on both sides of the lifting column 307. Electric telescopic rods 308 are installed on both sides of the fixed cylinder 305 and above the moving seat assembly 2. The moving frame 309 is installed on the outer side of the electric telescopic rod 308. The outer shell 304 is installed above the lifting column 307, and the bearing plate 301 is arranged on the inner side of the outer shell 304.

[0029] By adopting the above technical solution, the staff can adjust the overall height of the mechanism by adjusting the relative position between the fixing cylinder 305 and the lifting column 307 when necessary, so as to better meet the working needs of the gantry crane in different situations.

[0030] Specifically, the shape and size of the inner cross section of the fixed cylinder 305 are the same as the shape and size of the outer cross section of the lifting column 307 , and the inner side of the connecting groove 306 and the outer side of the moving frame 309 are in close contact with each other.

[0031] By adopting the above technical solution, a gap is prevented from being formed between the inner side of the fixed tube 305 and the outer side of the lifting column 307 , thereby preventing the lifting column 307 from shaking in the fixed tube 305 .

[0032] Specifically, the lifting and shock absorbing device 3 also includes a damper 302 and an elastic rubber frame 310. The elastic rubber frame 310 is installed between the inner bottom surface of the outer shell 304 and the outer bottom surface of the supporting plate 301. A plurality of dampers 302 are installed between the inner bottom surface of the outer shell 304 and the outer bottom surface of the supporting plate 301 and at a position inside the elastic rubber frame 310.

[0033] By adopting the above technical solution, the mechanism can buffer the vibration from the outside world to a certain extent through the cooperation of the damper 302 and the elastic rubber frame 310, thereby reducing the possibility of adverse effects of external vibration on the gantry crane.

[0034] Specifically, the lifting and shock absorbing device 3 further includes screws 303 , and the screws 303 are installed at the top of the outer shell 304 and at positions on both sides of the bearing plate 301 through threads.

[0035] By adopting the above technical solution, the mechanism can prevent the relative movement between the outer shell 304 and the bearing plate 301 when necessary, thereby preventing the shock absorption work from being carried out, and better meeting the needs of the staff.

[0036] When the present embodiment is used, when the gantry crane needs to use the mechanism, the fixed plate 1 is fixed in the working position, the two electric telescopic rods 308 on the fixed cylinder 305 in the lifting and shock absorbing device 3 are operated, so that the two moving frames 309 are separated from the connecting grooves 306 on the lifting column 307, and then the outer shell 304 is pulled, thereby driving the bearing plate 301 and the lifting column 307 and other structures to move to the required height, and the two electric telescopic rods 308 are started again, so that the two moving frames 309 are inserted into the corresponding connecting grooves 306. If shock absorption work is required, the staff can unscrew the two screws 303, and then adjust another mechanism according to the above steps. After the adjustment is completed, the gantry crane is installed on the two bearing plates 301, and then the two moving seat assemblies 2 are operated to drive the gantry crane to move along the two tracks 6, so as to use it. During use, the damper 302 can cooperate with the elastic rubber frame 310 to perform shock absorption work, and the protective plate 4 can play a certain protective role.

[0037] Example 2

[0038] The difference between this embodiment and embodiment 1 is that the limiting lighting device 5 includes a reduction motor 52, a screw rod 53 and a limit plate 55, two screw rods 53 are arranged between the fixed plate 1 and the track 6, and the reduction motors 52 are installed on both sides adjacent to each other between the two screw rods 53, and the limit plate 55 is installed on the outer side of the screw rod 53 and at the position outside the track 6 through threads.

[0039] By adopting the above technical solution, the staff can limit the movement of the movable seat assembly 2 to a certain extent through the two limiting plates 55 when necessary, thereby preventing the movable seat assembly 2 from moving to an unnecessary position.

[0040] Specifically, the position-limiting lighting device 5 further includes a mesh box 51 , and the mesh box 51 is installed outside the two reduction motors 52 .

[0041] By adopting the above technical solution, the two reduction motors 52 are protected to a certain extent, thereby reducing the possibility of damage to the reduction motors 52. In addition, the mesh box 51 is designed in a mesh shape, thereby ensuring that the reduction motors 52 can obtain certain ventilation and heat dissipation.

[0042] Specifically, the position limiting lighting device 5 further includes a lighting lamp 54 , and the lighting lamp 54 is installed on a side of the position limiting plate 55 away from the movable seat assembly 2 .

[0043] By adopting the above technical solution, the mechanism can provide certain auxiliary lighting through the lighting lamp 54 when needed, so as to better cope with the needs in dark conditions such as night, and reduce the possibility of some inconveniences.

[0044] When this embodiment is used, when it is necessary to limit the movement of the movable seat assembly 2, the two reduction motors 52 in the mesh box 51 in the limit lighting device 5 are started, and the two reduction motors 52 drive the screw rod 53 to rotate. The screw rod 53 is threadedly connected to the limit plate 55, and the outer bottom surface of the limit plate 55 is tightly attached to the outer top surface of the fixed plate 1, so the two screw rods 53 drive the two limit plates 55 to move, and then adjust the movable range of the movable seat assembly 2, so as to limit the movement of the movable seat assembly 2. When necessary, the staff can start the lighting lamp 54 for auxiliary lighting. The fixed plate 1 and the track 6 are both welded to the mesh box 51.

[0045] The structure and principle of the movable seat assembly 2, the protective plate 4, and the track 6 composed of the movable seat, the mounting groove, the control cavity, the strip hole, the control switch, the movable rod, the fixed block, the rotating wheel, the driving wheel, the driving motor, the limit groove, the limit block, the spring, the load-bearing wheel and the brush have been disclosed in a walking mechanism for a gantry crane disclosed in Chinese patent application No. 202223322450.1. The working principle is that when in use, starting the driving motor can drive the driving wheel to rotate, and then the driving wheel can drive the movable seat to move on the track. The movement of the movable seat can drive the protective plate and the brush to move, so as to remove debris on the track. At the same time, the movable seat can drive the rotating motor to rotate. The wheel moves on the track. When the track is twisted, the rotating wheel contacts the twisted part before the driving wheel. At this time, the twisted part blocks the movement of the rotating wheel, so that the fixed block and the moving rod cannot move continuously. As the moving seat continues to move, the moving seat drives the control switch to approach the moving rod, so that the moving rod can squeeze the control switch, so that the squeezed control switch can control the drive motor to stop, and then control the drive wheel to stop, so that the moving seat can stop moving, avoiding the moving seat from falling off the track. The brush contacts the track, and small particles of debris on the track can be removed by the brush, avoiding small debris from damaging the driving wheel, thereby improving safety.

[0046] The structure and principle of the damper 302 in the present invention have been disclosed in a smart home washing machine shock absorbing device disclosed in Chinese Patent Application No. 201721446985.6, and its working principle is to use damping characteristics to reduce mechanical vibration and consume kinetic energy.

[0047] The working principle and use process of the present invention are as follows: when the gantry crane needs to use the mechanism, fix the fixed plate 1 in the working position, operate the two electric telescopic rods 308 on the fixed cylinder 305 in the lifting and shock absorbing device 3, so that the two moving frames 309 are separated from the connecting grooves 306 on the lifting column 307, and then pull the outer shell 304, thereby driving the bearing plate 301 and the lifting column 307 and other structures to move to the required height, and start the two electric telescopic rods 308 again, so that the two moving frames 309 are inserted into the corresponding connecting grooves 306. If shock absorption work is required, the staff can unscrew the two screws 303, and then adjust the other mechanism according to the above steps. After the adjustment is completed, the gantry crane is installed on the two bearing plates 301, and then the two moving seat assemblies 2 are operated to drive the gantry crane. The machine walks along the two tracks 6 for use. During use, the damper 302 can cooperate with the elastic rubber frame 310 to perform shock absorption, and the protective plate 4 can play a certain protective role. When it is necessary to limit the movement of the movable seat assembly 2, the two reduction motors 52 in the mesh box 51 in the limit lighting device 5 are started, and the two reduction motors 52 drive the screw rod 53 to rotate. The screw rod 53 is threadedly connected to the limit plate 55, and the outer bottom surface of the limit plate 55 is tightly attached to the outer top surface of the fixed plate 1, so the two screw rods 53 drive the two limit plates 55 to move, and then adjust the movable range of the movable seat assembly 2, so as to limit the movement of the movable seat assembly 2. When necessary, the staff can start the lighting lamp 54 for auxiliary lighting. The fixed plate 1 and the track 6 are both welded to the mesh box 51.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A traveling mechanism for a gantry crane, comprising a fixed plate, characterized in that: A track is arranged above the fixed plate, a movable seat assembly is arranged outside the track, protective plates are installed on both sides of the movable seat assembly, a lifting and shock absorbing device is installed at the upper position of the movable seat assembly, and the fixed plate and the track are connected by a limit lighting device.

2. A traveling mechanism for a gantry crane according to claim 1, characterized in that: The lifting and shock absorbing device comprises a bearing plate, an outer shell, a fixed cylinder, a connecting groove, a lifting column, an electric telescopic rod and a moving frame. The fixed cylinder is installed at an upper position of the moving seat assembly, the lifting column is arranged on the inner side of the fixed cylinder, a plurality of connecting grooves are provided on both sides of the lifting column, the electric telescopic rods are installed on both sides of the fixed cylinder and at a position above the moving seat assembly, the moving frame is installed on the outer side of the electric telescopic rod, the outer shell is installed above the lifting column, and the bearing plate is arranged on the inner side of the outer shell.

3. A traveling mechanism for a gantry crane according to claim 2, characterized in that: The shape and size of the inner cross section of the fixed cylinder are the same as those of the outer cross section of the lifting column, and the inner side of the connecting groove and the outer side of the moving frame are in close contact with each other.

4. A traveling mechanism for a gantry crane according to claim 2, characterized in that: The lifting and shock absorbing device also includes a damper and an elastic rubber frame. The elastic rubber frame is installed between the inner bottom surface of the outer shell and the outer bottom surface of the supporting plate. A plurality of dampers are installed between the inner bottom surface of the outer shell and the outer bottom surface of the supporting plate and at a position inside the elastic rubber frame.

5. A traveling mechanism for a gantry crane according to claim 4, characterized in that: The lifting and shock absorbing device also includes screws, and the top of the outer shell and the positions on both sides of the bearing plate are both threadedly installed with screws.

6. The traveling mechanism for a gantry crane according to claim 1, characterized in that: The position-limiting lighting device comprises a reduction motor, a lead screw and a limit plate. Two lead screws are arranged between the fixed plate and the track. The reduction motors are installed on both sides adjacent to each other between the two lead screws. The limit plate is installed on the outer side of the lead screw and at the outer side of the track through threads.

7. A traveling mechanism for a gantry crane according to claim 6, characterized in that: The position-limiting lighting device further comprises a mesh box, and the mesh box is installed on the outer sides of the two reduction motors.

8. The traveling mechanism for a gantry crane according to claim 6, characterized in that: The position limiting lighting device also includes a lighting lamp, and the lighting lamp is installed on a side of the position limiting plate away from the movable seat assembly.

Images