A portal crane flexible outrigger adjustment mechanism

Abstract

The utility model relates to the technical field of hoisting machinery especially discloses a door type crane flexible supporting leg adjusting mechanism, including flexible supporting leg body, the one side of flexible supporting leg body top is provided with support frame, is provided with the adjusting sleeve on the support frame, is inserted with L shape support and is connected in the adjusting sleeve, the short side bottom of L shape support is provided with the adjusting seat, both ends of adjusting seat all are provided with the travelling wheel, is provided with the drive arrangement on the adjusting seat, and drive arrangement is connected with travelling wheel transmission, the utility model discloses the adjusting installation position of L shape support relative adjusting sleeve is driven by worm elevator, and the connecting positioning between L shape support and adjusting sleeve is realized through the mode of the insertion of positioning pin shaft, makes flexible supporting leg body can adapt to the installation requirement of different main girder, need not to process different flexible supporting leg body, reduces the construction cost, and the versatility is strong, and the movement of flexible supporting leg body is realized through the drive arrangement of setting and drives the travelling wheel, satisfies the support need of different operation surface, improves the safety of use.

Description

Technical Field

[0001] This utility model relates to the field of lifting machinery technology, and in particular to a flexible outrigger adjustment mechanism for a gantry crane. Background Technology

[0002] Gantry cranes, a variation of bridge cranes, are also known as portal cranes. Due to their high site utilization, large operating range, wide adaptability, and strong versatility, gantry cranes are widely used for loading and unloading operations in outdoor material yards, freight yards, and bulk cargo areas. Existing gantry cranes generally consist of a main beam, one rigid leg, and one flexible leg. The rigid and flexible legs are connected to the lower ends of the main beam, forming the gantry frame and improving the crane's stability. Typically, the rigid leg is rigidly connected to the main beam, while the flexible leg is flexibly connected. However, because the specifications of the main beam vary, the flexible leg needs to be adjusted according to the main beam model when connected to different main beams, requiring the fabrication of different flexible legs, which significantly increases construction costs.

[0003] Therefore, it is necessary to propose an improvement to the flexible outrigger adjustment mechanism of gantry cranes to overcome the shortcomings of the existing technology. Utility Model Content

[0004] The purpose of this invention is to solve the problems in the prior art and provide a flexible outrigger adjustment mechanism for gantry cranes.

[0005] The technical solution of this utility model is:

[0006] A flexible outrigger adjustment mechanism for a gantry crane includes a flexible outrigger body, a support frame on one side of the top of the flexible outrigger body, an adjustment sleeve on the support frame, an L-shaped bracket inserted and connected inside the adjustment sleeve, the L-shaped bracket slidingly engaging with the adjustment sleeve, an adjustment seat at the bottom of the short side of the L-shaped bracket, wheels at both ends of the adjustment seat, a drive device at one end of the adjustment seat, and the drive device being connected to one of the wheels.

[0007] Preferably, the adjusting sleeve has a fixing plate inside, and a worm gear jack is installed on the fixing plate. The output end of the worm gear jack abuts against the bottom of the long side of the L-shaped bracket.

[0008] Preferably, the adjusting sleeve is provided with four horizontally distributed first positioning holes, and the L-shaped bracket is provided with two sets of second positioning holes. Each set of second positioning holes is evenly distributed in two columns along the long side of the L-shaped bracket, and the two adjacent columns of second positioning holes in the two sets are staggered.

[0009] Preferably, a positioning pin is inserted into the first positioning hole, one end of the positioning pin is provided with a positioning boss, the other end of the positioning pin is provided with a groove, a connecting pin is provided in the groove, and a stop is provided on the connecting pin.

[0010] Preferably, the stop block is provided with a long groove, and the connecting pin penetrates and connects to the long groove, and slides in cooperation with the long groove.

[0011] Preferably, the input shaft of the worm gear jack penetrates and extends to the outside of the adjusting sleeve and is connected to a handwheel.

[0012] Preferably, the adjusting sleeve is provided with a protective cover, which covers the outside of the handwheel.

[0013] Preferably, a limiting wheel is provided on one of the long sides of the L-shaped bracket, and the limiting wheel is rotatably connected to the L-shaped bracket through a mounting bracket.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention uses a worm gear jack to drive an L-shaped bracket to adjust its installation position relative to the adjusting sleeve. The connection and positioning between the L-shaped bracket and the adjusting sleeve is achieved through a positioning pin insertion method. This allows the flexible outrigger body to adapt to the installation requirements of different main beams, eliminating the need to process different flexible outrigger bodies, reducing construction costs, and providing strong versatility. A driving device drives the traveling wheels to roll and contact the main beam, enabling the flexible outrigger body to move along the main beam, meeting the support needs of different working surfaces and improving its versatility. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the left-side structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the combined structure of the adjusting sleeve and the L-shaped bracket of this utility model;

[0019] Figure 4 This is a cross-sectional view of the combination of the adjusting sleeve and the L-shaped bracket of this utility model;

[0020] Figure 5 This is a schematic diagram of the positioning pin structure of this utility model;

[0021] Figure 6 This is a schematic diagram of the stop block structure of this utility model.

[0022] The components include: 1. Flexible outrigger body; 2. Support frame; 3. Adjusting sleeve; 4. L-shaped bracket; 5. Adjusting seat; 6. Traveling wheel; 7. Drive device; 8. Fixing plate; 9. Worm gear lift; 10. First positioning hole; 11. Second positioning hole; 12. Positioning pin; 13. Positioning boss; 14. Groove; 15. Connecting pin; 16. Stop block; 17. Long groove; 18. Handwheel; 19. Protective cover; 20. Limiting wheel; 21. Mounting bracket. Detailed Implementation

[0023] To make the technical means, technical features, utility model purpose and technical effects of this utility model easier to understand, the present utility model will be further described below with reference to specific illustrations.

[0024] like Figures 1-6 As shown, a flexible outrigger adjustment mechanism for a gantry crane includes an adjustment sleeve 3, an L-shaped bracket 4, a traveling wheel 6, and a drive device 7. The entire mechanism is installed on the flexible outrigger body 1. It can adjust its installation dimensions according to the different specifications of the main beam (not shown in the figure) to meet the installation and use requirements of main beams of various specifications. It can also drive the flexible outrigger body 1 to adjust its position along the main beam, so that the flexible outrigger body 1 moves closer to the rigid outrigger (not shown in the figure), thereby improving the safety performance of the gantry crane when moving without load.

[0025] like Figures 1-6 As shown, a support frame 2 is welded to one side of the top of the flexible outrigger body 1. An adjusting sleeve 3 is installed on the top of the support frame 2. A fixing plate 8 is connected to the lower side of the inside of the adjusting sleeve 3. A worm gear jack 9 is installed on the fixing plate 8. An L-shaped bracket 4 is connected to the adjusting sleeve 3. Specifically, the long side of the L-shaped bracket 4 is inserted into the adjusting sleeve 3, and the bottom end of the long side of the L-shaped bracket 4 abuts against the top of the output end of the worm gear jack 9. The worm gear jack 9 drives the long side of the L-shaped bracket 4 to slide within the adjusting sleeve 3 to achieve the adjustment of the installation position. The L-shaped bracket 4 is connected to the bottom of the short side of the main beam. The adjustment seat 5 is perpendicular to the short side of the L-shaped bracket 4. Both ends of the adjustment seat 5 are equipped with walking wheels 6. In use, the walking wheels 6 roll in contact with the top of the main beam to achieve movement relative to the main beam. A drive device 7 is installed on the side wall of one end of the adjustment seat 5. The drive device 7 is connected to the walking wheel 6 located at that end for driving the walking wheel 6 to rotate. The drive device 7 adopts a three-in-one motor deceleration braking method, which is an application of existing technology. The specific structure will not be described in detail in this embodiment.

[0026] In this embodiment, the worm gear jack 9 is driven manually. After installation, the input shaft of the worm gear jack 9 penetrates and extends to the outside of the adjusting sleeve 3. A handwheel 18 is installed on the input shaft of the worm gear jack 9 located outside the adjusting sleeve 3. The worm gear jack 9 is driven to move by rotating the handwheel 18. In order to prevent damage to the handwheel 18 by collision during movement and operation, a protective cover 19 is connected to the adjusting sleeve 3. The protective cover 19 is located outside the handwheel 18 and protects the handwheel 18.

[0027] After the worm gear jack 9 drives the L-shaped bracket 4 to be adjusted into position on the adjusting sleeve 3, it is necessary to fix the relative position of the L-shaped bracket 4 on the adjusting sleeve 3. Horizontally distributed first positioning holes 10 are machined on the adjusting sleeve 3. In this embodiment, there are four first positioning holes 10, which penetrate the adjusting sleeve 3. Correspondingly, second positioning holes 11, corresponding to the first positioning holes 10, are machined on the long side of the L-shaped bracket 4. The second positioning holes 11 are machined in four rows, with multiple holes in each row. The multiple second positioning holes 11 in each row are located along the long side of the L-shaped bracket 4. The four rows of second positioning holes 11 are evenly distributed in the degree direction. They are divided into two groups. The two rows of second positioning holes 11 in the same group are symmetrically distributed. The two adjacent rows of second positioning holes 11 in the two groups are staggered, so that the second positioning holes 11 are more densely distributed on the long side of the L-shaped bracket 4. This improves the precision of the L-shaped bracket 4 in adjusting the position on the adjusting sleeve 3. After the adjustment is in place, two of the four first positioning holes 10 can correspond to two of the two second positioning holes 11 in one of the two groups of second positioning holes 11. After the correspondence, the positioning pin 12 is inserted into the first positioning hole 10 and the second positioning hole 11.

[0028] A positioning boss 13 is machined at one end of the positioning pin 12 to limit the insertion of the positioning pin 12. To facilitate operation of the positioning pin 12, a lifting eye screw can be installed on the positioning boss 13 for easy handling and to prevent it from falling. A groove 14 is machined at the other end of the positioning pin 12, and a connecting pin 15 is installed in the groove 14. A stop 16 is connected to the connecting pin 15. Specifically, a long groove 17 is machined on the stop 16, and the connecting pin 15 penetrates and connects to the long groove 17, and slides in cooperation with the long groove 17. When the positioning pin 12 is inserted into the first positioning hole 10 and the second positioning hole 11, the stop 16 is rotated to make the length direction of the stop 16 parallel to the axis of the positioning pin 12. After insertion, the stop 16 is rotated to make the connecting pin 15 slide relative to the long groove 17, so that the length direction of the stop 16 is perpendicular to the axis of the positioning pin 12, thereby blocking and limiting the positioning pin 12 and preventing it from coming out during use, thus ensuring safe use.

[0029] like Figure 1 and Figure 2As shown, a mounting bracket 21 is connected to the side wall of the L-shaped bracket 4 with the long side facing the short side. A limiting wheel 20 is connected to the mounting bracket 21. The limiting wheel 20 can roll into contact with the side wall of the main beam to guide and limit the movement of the adjusting sleeve 3 and the L-shaped bracket 4 relative to the main beam.

[0030] The working principle of this utility model is as follows:

[0031] According to the specifications of the main beam, the worm gear jack 9 is driven by rotating the handwheel 18 to adjust the L-shaped bracket 4 within the adjusting sleeve 3 to adapt to the installation requirements of the flexible outrigger body 1 on the main beam. After adjustment, the positioning pin 12 is inserted into the corresponding first positioning hole 10 and second positioning hole 11 for positioning, thus completing the installation on the main beam. In use, the drive device 7 is started to move the flexible outrigger body 1 along the main beam direction away from the rigid outrigger to the working surface. Under no-load conditions, the height of the flexible outrigger body 1 is adjusted and supported on the working surface. After the operation is completed, the drive device 7 is started to move the flexible outrigger body 1 closer to the rigid outrigger, thereby realizing the overall movement position adjustment of the crane.

[0032] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. All equivalent changes and modifications made in accordance with the scope of the claims of this utility model should fall within the technical scope of this utility model.

Claims

1. A flexible outrigger adjustment mechanism for a gantry crane, comprising a flexible outrigger body (1), characterized in that, A support frame (2) is provided on one side of the top of the flexible support leg body (1). An adjustment sleeve (3) is provided on the support frame (2). An L-shaped bracket (4) is inserted and connected inside the adjustment sleeve (3). The L-shaped bracket (4) and the adjustment sleeve (3) are slidably engaged. An adjustment seat (5) is provided at the bottom of the short side of the L-shaped bracket (4). Both ends of the adjustment seat (5) are provided with walking wheels (6). A drive device (7) is provided at one end of the adjustment seat (5). The drive device (7) is connected to one of the walking wheels (6) in a transmission.

2. The gantry crane flexible outrigger adjustment mechanism according to claim 1, characterized in that: The adjusting sleeve (3) has a fixing plate (8) inside, and a worm gear jack (9) is provided on the fixing plate (8). The output end of the worm gear jack (9) abuts against the bottom of the long side of the L-shaped bracket (4).

3. The gantry crane flexible outrigger adjustment mechanism according to claim 1, characterized in that: The adjusting sleeve (3) is provided with four horizontally distributed first positioning holes (10), and the L-shaped bracket (4) is provided with two sets of second positioning holes (11). Each set of second positioning holes (11) is evenly distributed in two columns along the long side of the L-shaped bracket (4), and the two adjacent columns of second positioning holes (11) in the two sets are staggered.

4. The gantry crane flexible outrigger adjustment mechanism according to claim 3, characterized in that: A positioning pin (12) is inserted into the first positioning hole (10). One end of the positioning pin (12) is provided with a positioning boss (13), and the other end of the positioning pin (12) is provided with a groove (14). A connecting pin (15) is provided in the groove (14), and a stop (16) is provided on the connecting pin (15).

5. The gantry crane flexible outrigger adjustment mechanism according to claim 4, characterized in that: The stop block (16) is provided with a long groove (17), and the connecting pin (15) penetrates and connects to the long groove (17) and slides in cooperation with the long groove (17).

6. The gantry crane flexible outrigger adjustment mechanism according to claim 2, characterized in that: The input shaft of the worm gear jack (9) penetrates and extends to the outside of the adjusting sleeve (3) and is connected to a handwheel (18).

7. The gantry crane flexible outrigger adjustment mechanism according to claim 6, characterized in that: The adjusting sleeve (3) is provided with a protective cover (19), which covers the outside of the handwheel (18).

8. The gantry crane flexible outrigger adjustment mechanism according to claim 1, characterized in that: The L-shaped bracket (4) has a limiting wheel (20) on one side of its long side. The limiting wheel (20) is rotatably connected to the L-shaped bracket (4) through a mounting bracket (21).

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