Stable hoisting structure for portal frame

Abstract

The utility model belongs to the technical field of portal frames, and discloses a stable hoisting structure for a portal frame, which comprises two bottom plates, universal wheels are symmetrically arranged on the lower surfaces of the bottom plates, sleeve rods are fixedly arranged on the upper surfaces of the bottom plates, support rods are movably inserted into the upper sides of the sleeve rods, and a top rod is detachably arranged on the upper sides of the two support rods together. A lifting hook piece is slidably arranged on the lower surface of the ejector rod, a threaded sleeve is arranged between the sleeve rod and the supporting rod in a penetrating mode, a main fixing bolt is connected into the threaded sleeve in a threaded fit mode, and a plurality of fixing grooves used in cooperation with the threaded sleeve and the main fixing bolt are formed in the outer surface of the supporting rod. According to the scheme, the main fixing bolts are matched with the fixing grooves, so that the height of the portal frame can be flexibly adjusted to meet different hoisting requirements; the motor drives the lead screw to horizontally move the lifting hook, operation is simplified, and efficiency is improved; the reinforcing rods and other structures are reinforced in a multi-dimensional mode, stability is enhanced, and hoisting safety is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of gantry crane technology, specifically a stable hoisting structure for gantry cranes. Background Technology

[0002] A gantry crane is a piece of equipment used for lifting and moving heavy objects. It is usually composed of beams and columns, forming a shape similar to a "gate". The beams and columns are generally made of steel materials such as I-beams, channel steel or steel pipes, which have high strength and stability and can withstand large loads.

[0003] However, the following problems were found in the implementation of the relevant technologies:

[0004] In existing technologies, many gantry cranes with stable lifting structures have shortcomings in height adjustment. Some gantry cranes have a fixed height, which cannot adapt to different height operation requirements. If adjustments are needed, complex reassembly is required, which consumes a lot of time and manpower. At the same time, the adjustment of the hook position often relies on manual operation, which is not only inefficient but also difficult to accurately position, affecting the lifting progress. Moreover, in terms of structural stability, some gantry cranes lack multi-directional reinforcement structures such as reinforcing rods, side rods, and auxiliary frames, which makes them prone to swaying and tilting when lifting heavy objects, resulting in high safety risks and making it difficult to ensure the smooth and safe conduct of lifting operations. Utility Model Content

[0005] To address the problems mentioned in the background section, this invention provides a stable lifting structure for gantry cranes, featuring adjustable height, precise hook position adjustment, and structural stability. This invention utilizes a main fixing bolt and a fixing slot to flexibly adjust the gantry crane height to adapt to different lifting needs, reducing limitations in adapting to varying height requirements. A motor-driven lead screw allows for horizontal hook movement, minimizing adjustment time. Multi-dimensional reinforcement with reinforcing rods enhances stability and avoids safety hazards when lifting heavy objects.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a stable hoisting structure for a gantry crane, comprising two base plates, universal wheels symmetrically arranged on the lower surface of the base plates, a sleeve rod fixedly arranged on the upper surface of the base plates, and a support rod movably inserted into the upper side of the sleeve rod, a top rod detachably arranged on the upper side of the two support rods, a hook slidably arranged on the lower surface of the top rod, a threaded sleeve passing through the sleeve rod and the support rod, and a main fixing bolt connected to the threaded sleeve by internal thread engagement, and several fixing grooves for cooperating with the threaded sleeve and the main fixing bolt on the outer surface of the support rod.

[0007] Preferably, the system includes two base plates, characterized in that: symmetrical casters are provided on the lower surface of the base plates; a sleeve rod is fixedly provided on the upper surface of the base plates; a support rod is movably inserted into the upper side of the sleeve rod; a top rod is detachably provided on the upper side of both support rods; a hook is slidably provided on the lower surface of the top rod; a threaded sleeve is provided through the sleeve rod and the support rod; a main fixing bolt is connected to the threaded sleeve through its internal thread; and several fixing grooves are provided on the outer surface of the support rod to cooperate with the threaded sleeve and the main fixing bolt.

[0008] Preferably, a reinforcing rod is symmetrically fixedly connected between the two base plates, and a through groove is symmetrically opened on one side of the base plate, with the reinforcing rod fixedly installed in the corresponding groove.

[0009] Preferably, side rods are symmetrically fixedly connected to both sides of the sleeve rod and the base plate.

[0010] Preferably, a support plate is fixedly provided on the outer side of the sleeve rod, and a support column is fixedly provided on the upper surface of the support plate. An auxiliary frame is fixedly provided at the upper end of the support column. An auxiliary bolt is threadedly connected between the auxiliary frame and the corresponding support rod. Several auxiliary bolt slots for use with the auxiliary bolt are symmetrically opened on both sides of the support rod.

[0011] Preferably, an L-shaped clamping plate is symmetrically fixed on the upper surface of the support rod, and the top rod is clamped between the L-shaped clamping plate and the support rod. The L-shaped clamping plate and the top rod are connected by bolts.

[0012] Preferably, a limiting post is fixedly connected inside the adjustment frame, and the limiting post passes through the moving block.

[0013] Preferably, a slider is fixedly provided on the upper surface of the movable block, and the slider is engaged with the adjustment frame.

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

[0015] 1. This utility model allows for easy adjustment of the gantry height through the cooperation of the main fixing bolt and the fixing groove, meeting the hoisting operation requirements at different heights. The motor-driven screw drives the hook to move horizontally, making operation simple, reducing the workload of manually adjusting the hook position, and improving hoisting efficiency.

[0016] 2. This utility model enhances the overall stability of the gantry frame from multiple aspects through the use of reinforcing rods, side rods, auxiliary frames, and other structures, ensuring that it can withstand a large weight during hoisting, reducing the risk of swaying and tilting, and ensuring the safety of hoisting operations. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is an exploded view of the sleeve rod and its related structures of this utility model;

[0019] Figure 3 This is an exploded cross-sectional view of the top rod and adjusting frame of this utility model;

[0020] Figure 4 This is an exploded view of the base plate and related structures of this utility model.

[0021] In the diagram: 1. Base plate; 11. Casters; 12. Groove; 13. Reinforcing rod; 2. Support rod; 21. Sleeve rod; 22. Fixing groove; 23. Threaded sleeve; 24. Main fixing bolt; 25. Support plate; 26. Support column; 27. Auxiliary frame; 28. Auxiliary bolt parts; 29. ​​Auxiliary bolt groove; 210. Side rod; 3. Top rod; 31. L-shaped clamping plate; 4. Hook parts; 41. Adjusting frame; 42. Lead screw; 43. Motor; 44. Moving block; 45. Connecting rod; 46. Limiting post; 47. Sliding block. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figures 1 to 4 As shown, this utility model provides a stable hoisting structure for a gantry crane, including two base plates 1. Universal wheels 11 are symmetrically arranged on the lower surface of the base plates 1. With the help of the universal wheels 11 on the lower surface of the base plates 1, the entire gantry crane can be flexibly moved to a suitable hoisting position. A sleeve rod 21 is fixedly provided on the upper surface of the base plates 1, and a support rod 2 is movably inserted into the upper side of the sleeve rod 21. A top rod 3 is detachably provided on the upper side of both support rods 2. A hook 4 is slidably provided on the lower surface of the top rod 3. A connection is established between the sleeve rod 21 and the support rod 2. A threaded sleeve 23 is provided through the support rod 2, and a main fixing bolt 24 is connected to the threaded sleeve 23. Several fixing grooves 22 are opened on the outer surface of the support rod 2 to cooperate with the threaded sleeve 23 and the main fixing bolt 24. The support rod 2 is movably inserted into the sleeve rod 21. By first inserting the threaded sleeve 23 and then screwing the main fixing bolt 24 into the fixing grooves 22 at different positions, the insertion depth of the support rod 2 in the sleeve rod 21 can be adjusted, thereby changing the overall height of the gantry frame to adapt to different hoisting requirements.

[0024] Specifically, an adjustment frame 41 is fixedly provided on the upper surface of the top rod 3, and a lead screw 42 is rotatably provided inside the adjustment frame 41. A motor 43 is fixedly provided on one side of the adjustment frame 41, and the output end of the motor 43 passes through the adjustment frame 41 and is fixedly connected to the lead screw 42. A moving block 44 is threadedly sleeved on the outer surface of the lead screw 42. A connecting rod 45 is symmetrically fixed on the lower surface of the moving block 44. The connecting rod 45 is fixedly connected to the hook component 4. When the motor 43 is started, its output end drives the lead screw 42 inside the adjustment frame 41 to rotate. Since the moving block 44 and the lead screw 42 are threadedly sleeved, when the lead screw 42 rotates, the moving block 44 will move linearly along the lead screw 42. The moving block 44 is connected to the hook component 4 through the connecting rod 45. In this way, the hook component 4 can be horizontally slid on the lower surface of the top rod 3, which makes it convenient to adjust the position of the hook to align with the item to be lifted.

[0025] Furthermore, reinforcing rods 13 are symmetrically fixedly connected between the two base plates 1. A through groove 12 is symmetrically opened on one side of the base plate 1, and the reinforcing rods 13 are fixedly installed in the corresponding grooves 12. The two base plates 1 are fixedly connected by the reinforcing rods 13. The reinforcing rods 13 are installed in the grooves 12 of the base plates 1, which enhances the stability of the bottom of the gantry frame.

[0026] Furthermore, side rods 210 are symmetrically fixedly connected between the two sides of the sleeve rod 21 and the base plate 1. The side rods 210 between the two sides of the sleeve rod 21 and the base plate 1 further strengthen the connection between the sleeve rod 21 and the base plate 1.

[0027] It is worth noting that a support plate 25 is fixedly provided on the outer side of the sleeve rod 21, and a support column 26 is fixedly provided on the upper surface of the support plate 25. An auxiliary frame 27 is fixedly provided at the upper end of the support column 26. An auxiliary bolt 28 is threadedly connected between the auxiliary frame 27 and the corresponding support rod 2. Several auxiliary bolt slots 29 are symmetrically opened on both sides of the support rod 2 to cooperate with the auxiliary bolt 28. The support plate 25, the support column 26 and the auxiliary frame 27 on the outer side of the sleeve rod 21 constitute an auxiliary structure. The auxiliary bolt 28 is screwed into the auxiliary bolt slots 29 at different positions on both sides of the support rod 2, which enhances the stability of the connection between the support rod 2 and the sleeve rod 21.

[0028] It is worth noting that L-shaped clamping plates 31 are symmetrically fixed on the upper surface of the support rod 2, and the top rod 3 is clamped between the L-shaped clamping plates 31 and the support rod 2. The L-shaped clamping plates 31 and the top rod 3 are connected by bolts. The top rod 3 is clamped into the L-shaped clamping plates 31 on the support rod 2 and between the support rod 2. Then, the L-shaped clamping plates 31 and the top rod 3 are fixed with bolts to complete the installation of the top rod 3.

[0029] It is worth mentioning that a limiting post 46 is fixedly connected inside the adjusting frame 41, and the limiting post 46 passes through the moving block 44. The limiting post 46 passes through the moving block 44 to prevent the moving block 44 from rotating and to ensure that it can only make linear translation.

[0030] It is worth emphasizing that a slider 47 is fixedly provided on the upper surface of the moving block 44, and the slider 47 is locked on the adjustment frame 41. The slider 47 being locked on the adjustment frame 41 further ensures the stability of the movement of the moving block 44.

[0031] Among them, motor 43 is existing technology and will not be described in detail; at the same time, this utility model also includes a power supply, controller and switch, etc., which are not the main technical points of this patent and will not be described in detail; the "front, back, left and right" perspectives of this device are as follows: Figure 1 The direction shown in the diagram is the reference.

[0032] Working principle: With the help of the casters 11 on the lower surface of the base plate 1, the entire gantry frame can be moved flexibly to reach the appropriate hoisting position. The support rod 2 is movably inserted into the sleeve rod 21. By first inserting the threaded sleeve 23 and then screwing the main fixing bolt 24 into the fixing groove 22 at different positions, the insertion depth of the support rod 2 in the sleeve rod 21 can be adjusted, thereby changing the overall height of the gantry frame to adapt to different hoisting requirements.

[0033] When the motor 43 is started, its output end drives the lead screw 42 in the adjustment frame 41 to rotate. Since the moving block 44 and the lead screw 42 are threaded together, when the lead screw 42 rotates, the moving block 44 will move linearly along the lead screw 42. The limit post 46 passes through the moving block 44 to prevent the moving block 44 from rotating and ensure that it can only move linearly. The slider 47 is locked on the adjustment frame 41 to further ensure the stability of the moving block 44. The moving block 44 is connected to the hook part 4 through the connecting rod 45, so that the hook part 4 can slide horizontally on the lower surface of the top rod 3, which makes it convenient to adjust the position of the hook to align with the item to be lifted.

[0034] The top rod 3 is inserted between the L-shaped clamping plate 31 on the support rod 2 and the support rod 2. The L-shaped clamping plate 31 is then fixed to the top rod 3 with bolts to complete the installation of the top rod 3. The two base plates 1 are fixedly connected by a reinforcing rod 13. The reinforcing rod 13 is installed in the groove 12 of the base plate 1 to enhance the stability of the bottom of the gantry frame. The side rods 210 between the two sides of the sleeve rod 21 and the base plate 1 further reinforce the connection between the sleeve rod 21 and the base plate 1. The support plate 25, the support column 26 and the auxiliary frame 27 on the outside of the sleeve rod 21 constitute an auxiliary structure. The auxiliary bolts 28 are screwed into the auxiliary bolt grooves 29 at different positions on both sides of the support rod 2 to enhance the stability of the connection between the support rod 2 and the sleeve rod 21.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A stable hoisting structure for gantry, comprising two base plates (1), characterized in that: The lower surface of the bottom plate (1) is symmetrically provided with universal wheels (11), the upper surface of the bottom plate (1) is fixedly provided with sleeve rods (21), the upper side of the sleeve rod (21) is movably inserted with support rods (2), the upper sides of the two support rods (2) are jointly and detachably provided with top rods (3), the lower surface of the top rod (3) is slidably provided with hook members (4), the sleeve rods (21) and the support rods (2) are jointly and penetratively provided with threaded sleeves (23), the threaded sleeves (23) are threadedly and matchingly connected with main fixed bolts (24), and the outer surface of the support rod (2) is provided with a plurality of fixed grooves (22) matched with the threaded sleeves (23) and the main fixed bolts (24).

2. The stable hoisting structure for a portal as claimed in claim 1, characterized in that: The upper surface of the top rod (3) is fixedly provided with an adjusting frame (41), the adjusting frame (41) is rotatably provided with a lead screw (42), one side of the adjusting frame (41) is fixedly provided with a motor (43), the output end of the motor (43) penetrates the adjusting frame (41) and is fixedly connected with the lead screw (42), the outer surface of the lead screw (42) is threadedly sleeved with a moving block (44), the lower surface of the moving block (44) is fixedly provided with connecting rods (45) in symmetry, and the connecting rods (45) are fixedly connected with the hook members (4).

3. The stable hoisting structure for gantry according to claim 1, characterized in that: The two bottom plates (1) are fixedly and symmetrically connected with reinforcing rods (13), and the bottom plate (1) is symmetrically provided with through grooves (12) on one side.

4. The stable hoisting structure for a portal as claimed in claim 1, wherein: The two sides of the sleeve rod (21) and the bottom plate (1) are fixedly and symmetrically connected with side rods (210).

5. The stable hoisting structure for a portal as claimed in claim 1, wherein: The outer side of the sleeve rod (21) is fixedly provided with a support plate (25), the upper surface of the support plate (25) is fixedly provided with support columns (26), the upper end of the support column (26) is fixedly provided with an auxiliary frame (27), the auxiliary frame (27) and the corresponding support rod (2) are threadedly and penetratively connected with auxiliary bolt members (28), and the two sides of the support rod (2) are symmetrically provided with a plurality of auxiliary bolt grooves (29) matched with the auxiliary bolt members (28).

6. The stable hoisting structure for a portal as claimed in claim 1, wherein: The upper surface of the support rod (2) is fixedly provided with L-shaped clamping plates (31), the top rod (3) is clamped between the L-shaped clamping plates (31) and the support rod (2), and the L-shaped clamping plates (31) and the top rod (3) are connected through bolts.

7. The stable hoisting structure for gantry according to claim 2, characterized in that: The adjusting frame (41) is fixedly connected with a limiting column (46), and the limiting column (46) penetrates the moving block (44).

8. The stable hoisting structure for gantry according to claim 2, characterized in that: The upper surface of the moving block (44) is fixedly provided with a sliding block (47), and the sliding block (47) is clamped on the adjusting frame (41).

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