Hoisting machinery base convenient to move and provided with stable structure

Abstract

The utility model relates to the technical field of hoisting machinery bases, in particular to a hoisting machinery base which is connected with a rack of a crane, the hoisting machinery base comprises a base, a bottom frame, trundles and a stable structure, and the base is of a box structure with an opening in the bottom; the bottom frame is arranged in the base; the trundles are installed at the bottom of the bottom frame. The stabilizing structure is connected between the base and the bottom frame; the stabilizing structure comprises a lead screw, a movable sleeve, a supporting column and a connecting rod. The lead screw is arranged in the base and driven by the driving device to rotate. The movable sleeve movably penetrates through the side wall of the base and is in threaded connection with the screw rod; the supporting column is in threaded connection with the movable sleeve in the vertical direction. The two ends of the connecting rod are rotationally connected with the movable sleeve and the underframe. By arranging the stabilizing structure, when the hoisting machinery base needs to be stably parked, the transverse size of the hoisting machinery base can be increased, and meanwhile, the trundles are also retracted into the base, so that the main bearing capacity of a hoisting machine during cargo transportation cannot act on the trundles, and the service life of the trundles can be effectively prolonged.

Description

Technical Field

[0001] This utility model relates to the field of lifting machinery base technology, specifically a lifting machinery base that is easy to move and has a stable structure. Background Technology

[0002] In the field of lifting operations, there are industrial processes involving the movement of machinery or other heavy objects from one location to another. These operations typically rely on lifting machinery, which requires a stable base to ensure its positional stability during operation. Existing lifting machinery base designs often incorporate casters at the bottom for easy movement when not in operation.

[0003] However, in practical applications, it has been found that this traditional base with casters has the following drawbacks: when the weight of the lifted goods is large, the casters, due to their own structural and material limitations, have limited load-bearing capacity, leading to wear, deformation, or even damage to the casters, which in turn affects the normal movement function of the lifting machinery base. To address these problems, this utility model proposes a lifting machinery base with a stable structure that is easy to move. Utility Model Content

[0004] The purpose of this utility model is to provide a crane base that is easy to move and has a stable structure, in order to solve the problems mentioned in the background art.

[0005] This utility model is achieved through the following technical solution:

[0006] A movable lifting machinery base with a stable structure is provided, which is connected to the frame of a crane. The lifting machinery base includes a base, a base frame, casters, and a stable structure. The base is a box structure with an open bottom. The base frame is located inside the base. The casters are installed at the bottom of the base frame. The stable structure is connected between the base and the base frame.

[0007] The stabilizing structure includes a lead screw, a movable sleeve, a support column, and a connecting rod. The lead screw is located inside the base and is driven to rotate by a drive device. The movable sleeve movably passes through the side wall of the base and is threadedly connected to the lead screw. The support column is threadedly connected to the movable sleeve along a vertical direction. The two ends of the connecting rod are rotatably connected to the movable sleeve and the base frame, respectively.

[0008] Optionally, a set of support legs is formed by one lead screw, one movable sleeve, one support column and one connecting rod, and four sets of support legs are provided around the base.

[0009] Optionally, the drive device includes a motor and a bevel gear set, the housing of the motor is fixed to the base, and the motor is connected to the lead screw via the bevel gear set.

[0010] Optionally, the casters are swivel casters with a braking structure, and the four casters are located at the four bottom corners of the base frame.

[0011] Optionally, the connecting rod is rotatably connected to the movable sleeve via a first rotating shaft, and the connecting rod is rotatably connected to the base frame via a second rotating shaft.

[0012] Optionally, a stud is fixedly provided on the top of the base, and a flange is fixedly provided on the frame. The flange has a connection hole corresponding to the stud, and the stud is fixed by a nut after being inserted into the connection hole.

[0013] Optionally, the support column includes a column body, a handwheel fixedly disposed at the top of the column body, and a base plate fixedly disposed at the bottom of the column body.

[0014] Compared with the prior art, this utility model provides a lifting machinery base that is easy to move and has a stable structure, which has the following advantages:

[0015] 1. This utility model, by setting up a stabilizing structure, includes a lead screw, a movable sleeve, a support column, and a connecting rod. When it is necessary to stably park the crane base in a designated position, the movable sleeve can be extended outward, thereby moving the support column away from the base and supporting it on the ground, thus increasing the lateral volume of the crane base and improving its stability. At the same time, the casters are also pulled upward into the base by the connecting rod. In this way, when the crane is transporting heavy goods, its main load-bearing capacity is applied to the base and support column, rather than to the casters, which can effectively extend the service life of the casters.

[0016] 2. The present invention has four sets of support legs arranged around the base. The four sets of support legs can provide support in four directions of the base, which has a good anti-tipping effect and ensures the stability of the lifting machinery base.

[0017] 3. The support column of this utility model includes a column body, a handwheel fixedly mounted on the top of the column body, and a base plate fixedly mounted on the bottom of the column body. The handwheel makes it easier for the operator to rotate the support column, and the base plate increases the contact area between the support column and the ground, making it less likely to damage the ground structure under the same pressure. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram showing the internal structure of the base of this utility model;

[0020] Figure 3This is a partial structural schematic diagram of the present invention;

[0021] Figure 4 For the present utility model Figure 3 A partially enlarged structural diagram.

[0022] In the diagram: 1. Frame; 2. Base; 3. Base frame; 4. Casters; 5. Lead screw; 6. Moving sleeve; 7. Support column; 70. Column; 71. Handwheel; 72. Base plate; 8. Connecting rod; 9. Motor; 10. Drive bevel gear; 11. Driven bevel gear; 12. Gearbox; 13. First rotating shaft; 14. Second rotating shaft; 15. Stud; 16. Flange; 17. Nut. Detailed Implementation

[0023] 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.

[0024] Example: Please refer to Figures 1 to 4 According to an embodiment of the present invention, a lifting machinery base with a stable structure that is easy to move is provided. It is connected to the frame 1 of the crane. The lifting machinery base includes a base 2, a base frame 3, and casters 4. The base 2 is a box structure with an open bottom. The base frame 3 is located inside the base 2. The casters 4 are installed at the bottom of the base frame 3. The lifting machinery base also includes a stable structure connecting the base 2 and the base frame 3. The stable structure specifically includes a lead screw 5, a movable sleeve 6, a support column 7, and a connecting rod 8. The lead screw 5 is located inside the base 2 and is driven to rotate by a drive device. The movable sleeve 6 movably passes through the side wall of the base 2 and is threadedly connected to the lead screw 5. The support column 7 is threadedly connected to the movable sleeve 6 along a vertical direction. The two ends of the connecting rod 8 are rotatably connected to the movable sleeve 6 and the base frame 3, respectively.

[0025] The lifting machinery base with the above-described structure is easy to move and has a stable structure. When the lifting machinery base needs to be moved, the casters 4 are in contact with the ground, and the entire lifting machinery base can be easily moved on the ground by the casters 4. At this time, the support column 7 is retracted to the outside of the base 2. The lateral volume of the lifting machinery base is small, making it easy to move through narrow areas and convenient for use. When it is necessary to stably park the lifting machinery base in a designated position, the drive device can drive the lead screw 5 to rotate in the opposite direction, causing the movable sleeve 6 to extend outward, thereby moving the support column 7 away from the base 2 and supporting it on the ground. This increases the lateral volume of the lifting machinery base and improves its stability. At the same time, the casters 4 are also pulled upward into the base 2 by the connecting rod 8. In this way, when the crane is transporting heavy goods, its main load-bearing capacity is applied to the base 2 and the support column 7, rather than to the casters 4, which can effectively extend the service life of the casters 4.

[0026] In this exemplary embodiment, a lead screw 5, a movable sleeve 6, a support column 7, and a connecting rod 8 constitute a set of support legs. Four sets of support legs are provided and positioned around the base 2. This arrangement allows the four sets of support legs to provide support in four directions of the base 2, effectively preventing tipping and ensuring the stability of the lifting machinery base. Of course, in other embodiments, the number of support legs can be two, three, five, etc., and the specific number of support legs can be set as needed.

[0027] In this exemplary embodiment, the drive device includes a motor 9 and a bevel gear set. The housing of the motor 9 is fixed to the base 2, and the motor 9 is connected to the lead screw 5 via the bevel gear set. Specifically, the bevel gear set includes a driving bevel gear 10 and four driven bevel gears 11 encapsulated in a gearbox 12. The gearbox 12 is fixed to the top of the base 2, and the four driven bevel gears 11 are coaxially fixed to the four lead screws 5 respectively. The housing of the motor 9 is fixed to the bottom of the gearbox 12, and the output shaft of the motor 9 is fixedly connected to the driving bevel gear 10. The motor 9 achieves synchronous rotation of the four lead screws 5 through the transmission engagement of the driving bevel gear 10 and the driven bevel gears 11. Of course, to reduce transmission friction, a lubricant (such as lubricating oil, grease, etc.) can also be filled in the gearbox 12.

[0028] In this exemplary embodiment, the casters 4 are swivel casters with braking structures, and the four casters 4 are located at the four corners of the bottom of the base frame 3. This arrangement facilitates the turning of the lifting machinery base during movement, and before lifting goods, the rolling of the swivel casters can be stopped by the braking structure of the swivel casters, thereby limiting the movement of the lifting machinery base.

[0029] In this exemplary embodiment, the connecting rod 8 is rotatably connected to the movable sleeve 6 via a first rotating shaft 13, and the connecting rod 8 is rotatably connected to the base frame 3 via a second rotating shaft 14. In other embodiments, both ends of the connecting rod 8 can be rotatably connected to the movable sleeve 6 and the base frame 3 respectively via hinges, etc.

[0030] To facilitate the assembly and disassembly of the frame 1 and the lifting machinery base, in this exemplary embodiment, a stud 15 is fixedly installed on the top of the base 2, and a flange 16 is fixedly installed on the frame 1. The flange 16 has a connection hole corresponding to the stud 15, and the stud 15 is inserted into the connection hole and fixed by a nut 17. By setting up the connection structure such as the stud 15, nut 17 and flange 16, subsequent assembly and disassembly work between the frame 1 and the lifting machinery base can be facilitated.

[0031] In this exemplary embodiment, the support column 7 includes a column body 70, a handwheel 71 fixedly disposed at the top of the column body 70, and a base plate 72 fixedly disposed at the bottom of the column body 70. This arrangement allows the operator to rotate the support column 7 with less effort, and the base plate 72 increases the contact area between the support column 7 and the ground, making it less likely to damage the ground structure under the same pressure.

[0032] Working principle: When the crane base needs to be moved, the drive device drives the lead screw 5 to rotate, causing the movable sleeve 6 to move towards the center of the base 2 until the support column 7 retracts and abuts against the outside of the base 2. At the same time, the base frame 3 moves downward under the action of the connecting rod 8 until the caster 4 replaces the base 2 and supports it on the ground. In this way, the entire crane base can be easily moved on the ground by the caster 4. Moreover, since the support column 7 is retracted to the outside of the base 2, the lateral volume of the crane base can be effectively reduced, making it easier to pass through narrow areas and further facilitating its movement and use. Furthermore, when it is necessary to stably park the crane base in a designated position, the drive device can drive the lead screw 5 to rotate in the opposite direction, causing the movable sleeve 6 to extend outward, thereby moving the support column 7 away from the base 2 and supporting it on the ground. This increases the lateral volume of the crane base and improves its stability. At the same time, the casters 4 are also retracted upward into the base 2. In this way, when the crane is transporting heavy goods, its main load-bearing capacity is applied to the base 2 and the support column 7, rather than to the casters 4, which can effectively extend the service life of the casters 4.

[0033] 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 movable lifting machinery base with a stable structure, connected to the crane frame (1), characterized in that, The lifting machinery base includes: The base (2) is a box structure with an open bottom; The base frame (3) is located within the base (2); Casters (4) are installed on the bottom of the base frame (3); A stable structure is provided, connecting the base (2) and the frame (3); The robust structure includes: The lead screw (5) is located inside the base (2) and is driven to rotate by the drive device; The movable sleeve (6) movably passes through the side wall of the base (2) and is threadedly connected to the lead screw (5); The support column (7) is connected to the movable sleeve (6) along a vertical thread; The connecting rod (8) is rotatably connected at both ends to the movable sleeve (6) and the base frame (3).

2. The lifting machinery base with a stable structure that is easy to move according to claim 1, characterized in that: A set of support legs is formed by a lead screw (5), a movable sleeve (6), a support column (7) and a connecting rod (8), and four sets of support legs are provided around the base (2).

3. The lifting machinery base with a stable structure that is easy to move according to claim 1 or 2, characterized in that: The drive device includes a motor (9) and a bevel gear set. The housing of the motor (9) is fixed to the base (2). The motor (9) is connected to the lead screw (5) through the bevel gear set.

4. The lifting machinery base with a stable structure that is easy to move according to claim 1 or 2, characterized in that: The casters (4) are universal wheels with braking structures, and the four casters (4) are located at the four corners of the bottom of the base frame (3).

5. The lifting machinery base with a stable structure that is easy to move according to claim 1 or 2, characterized in that: The connecting rod (8) is rotatably connected to the movable sleeve (6) via a first rotating shaft (13), and the connecting rod (8) is rotatably connected to the base frame (3) via a second rotating shaft (14).

6. The lifting machinery base with a stable structure that is easy to move according to claim 1 or 2, characterized in that: A stud (15) is fixedly installed on the top of the base (2), and a flange (16) is fixedly installed on the frame (1). A connection hole corresponding to the stud (15) is opened on the flange (16), and the stud (15) is fixed by a nut (17) after being inserted into the connection hole.

7. The lifting machinery base with a stable structure that is easy to move according to claim 1 or 2, characterized in that: The support column (7) includes a column body (70), a handwheel (71) fixed to the top of the column body (70), and a base plate (72) fixed to the bottom of the column body (70).

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