Hoisting device for hoisting in narrow space

Abstract

The utility model relates to a hoisting device used in a narrow space, which belongs to the technical field of underground construction engineering, and is characterized in that an auxiliary mounting frame and a connecting piece are arranged, the connecting piece is in sliding connection with a cross beam through a stepping motor ball screw structure, and the connecting piece drives the auxiliary mounting frame to move together; and the flexible adjustment of the distance between the main mounting frame and the auxiliary mounting frame is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of underground construction engineering, in particular to a lifting and hoisting device used in a narrow space. Background Art

[0002] A crane is a multi-action lifting machine capable of vertically lifting and horizontally transporting heavy objects within a certain range. It is also known as an overhead crane, overhead crane, or hoist. Lifting equipment is characterized by intermittent motion, meaning that the corresponding mechanisms for retrieving, transporting, and unloading operations alternate within a single cycle. Cranes are becoming increasingly popular and widely used in the market.

[0003] The Chinese patent with publication number CN111824955A in the prior art discloses a bridge component lifting and hoisting device and its construction method. The equipment includes two sets of brackets, each of which includes two sets of main brackets, four diagonal braces, and two sets of connecting systems; the brackets are connected to the main structure of the steel beam; a crane beam and a crane are installed above the brackets, and the main brackets are extended outside the steel beam. The lifting and lowering function of the crane is used to achieve the purpose of lifting and lowering steel beam components in special geographical environments. However, lifting and hoisting within a small operating space will inevitably have an impact on the operating building during construction. Conventional truck cranes are used to lift above the operating area, and construction safety is a relatively large issue. Considering issues such as construction costs, it is necessary to optimize lifting and hoisting within a small space.

[0004] In view of the above problems, the present invention provides a new technical solution that is different from the prior art. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a lifting and hoisting device for use in a narrow space in view of the problem that the existing lifting and hoisting devices occupy a large space and are inconvenient to use in a narrow space.

[0006] This application provides a lifting and hoisting device for use in a narrow space, which adopts the following technical solutions

[0007] A lifting and hoisting device for use in a narrow space comprises a crossbeam and two sets of main mounting frames for supporting the crossbeam. Support mechanisms are provided on both sides of the crossbeam. The support mechanisms comprise a connecting piece and a secondary mounting frame. The secondary mounting frame is hinged to the connecting piece. The connecting piece is slidably connected to the side wall of the crossbeam via a stepper motor ball screw structure. The stepper motor ball screw structure is provided with a protective cover.

[0008] By adopting the above technical solution, the connecting member drives the auxiliary mounting frame to move, thereby realizing flexible adjustment of the distance between the main mounting frame and the auxiliary mounting frame.

[0009] Furthermore, the stepper motor ball screw structure includes a motor, a nut, and a screw shaft. The motor is fixed to the side wall of the beam, the screw shaft is fixedly connected to the motor output end, the nut is threadedly connected to the screw shaft, and the nut is fixedly connected to the connecting piece.

[0010] By adopting the above technical solution, the operator starts the motor to rotate, the screw shaft rotates to drive the nut to move back and forth along the screw shaft direction, the nut drives the connecting piece to move, and the connecting piece drives the auxiliary mounting frame to move back and forth on the beam.

[0011] Furthermore, the connecting member includes a limiting block, which is fixedly connected to the nut and contacts the outer end surface of the protective cover.

[0012] By adopting the above technical solution, the limiting block and the protective cover conflict with each other, and the protective cover supports the limiting block, thereby improving the stability of the device.

[0013] Furthermore, support beams are fixedly provided between the main mounting frames.

[0014] By adopting the above technical solution, the structure between the main mounting frames is ensured to be firm and the stability of the device is improved.

[0015] Furthermore, an arc-shaped support foot is detachably mounted on the bottom end of the auxiliary mounting frame.

[0016] By adopting the above technical solution, the arc-shaped supporting legs are more evenly stressed, thereby extending the service life of the device.

[0017] Furthermore, the connecting member includes a first flange and a second flange, the first flange is fixedly connected to the nut, and the first flange has multiple groups of first threaded holes in a circular array, and the second flange has second threaded holes at positions corresponding to the first flange, and the first threaded holes and the second threaded holes are threadedly connected by bolts to make the first flange and the second flange fit each other.

[0018] By adopting the above technical solution, the first flange and the second flange cooperate with each other. The operator can rotate the second flange to align the second threaded hole on the second flange with any first threaded hole on the first flange, and adjust the angle of the auxiliary mounting frame through the threaded connection of the bolts, thereby improving the overall flexibility of the device.

[0019] Furthermore, the angle between adjacent first threaded holes is less than 30 degrees.

[0020] By adopting the above technical solution, it is ensured that the number of the first and second threaded holes on the first flange and the second flange is sufficient so that the angle of the auxiliary mounting frame can be flexibly adjusted.

[0021] The beneficial effect of the present invention is that the present invention sets a secondary mounting frame and a connecting piece, and uses a stepping motor ball screw structure to make the connecting piece and the crossbeam slidingly connected, and the connecting piece drives the secondary mounting bracket to move together, thereby realizing flexible adjustment of the distance between the main mounting frame and the secondary mounting frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural diagram of the utility model;

[0023] Figure 2 This is a structural diagram of the ball screw structure of the stepping motor of the utility model;

[0024] Figure 3 This is a schematic structural diagram of the second embodiment of the present utility model;

[0025] Figure 4 This is a schematic structural diagram of a connecting member according to a second embodiment of the present invention;

[0026] In the figure: 1. Crossbeam; 2. Main mounting frame; 3. Support mechanism; 31. Connector; 311. First flange; 312. Second flange; 313. First threaded hole; 314. Second threaded hole; 315. Bolt; 32. Auxiliary mounting frame; 4. Stepper motor ball screw structure; 41. Motor; 42. Nut; 43. Screw shaft; 5. Protective cover; 6. Limit block; 7. Support beam; 8. Arc-shaped support foot. DETAILED DESCRIPTION

[0027] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The embodiments given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0028] The embodiment of the present application discloses a lifting and hoisting device for use in a narrow space. Example 1:

[0029] Reference Figure 1 A lifting and hoisting device for use in a narrow space includes a beam 1 and two sets of main mounting frames 2 for supporting the beam 1. Support mechanisms 3 are provided on both sides of the beam 1. The support mechanisms 3 include a connecting member 31 and a sub-mounting frame 32. The sub-mounting frame 32 is hinged to the connecting member 31. The connecting member 31 is slidably connected to the side wall of the beam 1 through a stepper motor ball screw structure. A protective cover 5 is provided on the outer cover of the stepper motor ball screw structure. The connecting member 31 drives the sub-mounting frame 32 to move, thereby realizing flexible adjustment of the distance between the main mounting frame 2 and the sub-mounting frame 32.

[0030] Reference Figures 1 to 2The ball screw structure of the stepper motor includes a motor, a nut 42, and a screw shaft 43. The motor is fixed to the side wall of the beam 1. The screw shaft 43 is fixedly connected to the output end of the motor. The nut 42 is threadedly connected to the screw shaft 43. The nut 42 is fixedly connected to the connecting piece 31. When the operator starts the motor to rotate, the screw shaft 43 rotates and drives the nut 42 to move back and forth along the axis direction of the screw shaft 43. The nut 42 drives the connecting piece 31 to move, and the connecting piece 31 drives the sub-mounting frame 32 to move back and forth on the beam 1.

[0031] Reference Figures 1 to 2 The connecting member 31 includes a limit block 6, which is fixedly connected to the nut 42 and the limit block 6 conflicts with the outer end surface of the protective cover 5. The limit block 6 and the protective cover 5 conflict with each other, and the protective cover 5 supports the limit block 6 to improve the stability of the device.

[0032] Reference Figures 1 to 2 A support beam 7 is fixed between the main mounting frames 2 to ensure that the structure between the main mounting frames 2 is firm and improve the stability of the device.

[0033] Reference Figures 1 to 2 The bottom end of the auxiliary mounting frame 32 is detachably mounted with an arc-shaped support foot 8, which allows the arc-shaped support foot 8 to be more evenly stressed, thereby extending the service life of the device.

[0034] The implementation principle of one embodiment of the present application is to utilize the principle of leverage to lift. According to the principle of leverage, as the length of the lever arm increases, the required force also decreases accordingly. Conversely, by increasing the length of the crossbeam 1 and adding a fulcrum, namely the secondary mounting frame 32, the force exerted by the crossbeam 1 on the main mounting frame 2 is reduced, thereby increasing the overall service life of the device. Furthermore, the distance between the secondary mounting frame 32 and the main mounting frame 2 can be flexibly adjusted. If only the main mounting frame 2 can be placed in a narrow space, the distance between the secondary mounting frame 32 and the main mounting frame 2 can be adjusted to allow the secondary mounting frame 32 to be placed in other spaces, thereby increasing the applicability of the device. Example 2:

[0035] Reference Figures 3 and 4The connecting member 31 includes a first flange 311 and a second flange 312. The first flange 311 is fixedly connected to the nut 42, and a plurality of first threaded holes 313 are opened on the first flange 311 in an annular array. The second flange 312 is provided with second threaded holes 314 at positions corresponding to the first flange 311. The first threaded holes 313 and the second threaded holes 314 are threadedly connected by bolts 315 so that the first flange 311 and the second flange 312 fit together. The first flange 311 and the second flange 312 cooperate with each other. The operator can rotate the second flange 312 to align the second threaded holes 314 on the second flange 312 with any first threaded holes 313 on the first flange 311, and threadedly connect them through bolts 315 to adjust the angle of the sub-mounting frame 32, thereby improving the overall flexibility of the device.

[0036] Reference Figures 3 and 4 The angle between adjacent first threaded holes 313 is less than 30 degrees, ensuring that the number of first threaded holes 313 and second threaded holes 314 on the first flange 311 and the second flange 312 is sufficient so that the angle of the auxiliary mounting frame 32 can be flexibly adjusted.

[0037] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A lifting and hoisting device for use in a narrow space, comprising a crossbeam (1) and two sets of main mounting frames (2) for supporting the crossbeam (1), characterized in that: Support mechanisms (3) are provided on both sides of the crossbeam (1), and the support mechanisms (3) include a connecting member (31) and a secondary mounting frame (32). The secondary mounting frame (32) is hinged to the connecting member (31), and the connecting member (31) is slidably connected to the side wall of the crossbeam (1) via a stepper motor (41) ball screw structure. The ball screw structure of the stepper motor (41) is provided with a protective cover (5) on its outer cover.

2. A lifting and hoisting device for use in a narrow space according to claim 1, characterized in that: The stepping motor (41) ball screw structure (4) comprises a motor (41), a nut (42), and a screw shaft (43); the motor (41) is fixedly arranged on the side wall of the beam (1); the screw shaft (43) is fixedly connected to the motor output end; the nut (42) is threadedly connected to the screw shaft (43); and the nut (42) is fixedly connected to the connecting piece (31).

3. A lifting and hoisting device for use in a narrow space according to claim 2, characterized in that: The connecting member (31) includes a limiting block (6), the limiting block (6) is fixedly connected to the nut (42), and the limiting block (6) is in conflict with the outer end surface of the protective cover (5).

4. The lifting and hoisting device for use in a narrow space according to claim 1, characterized in that: A support beam (7) is fixedly provided between the main mounting frames (2).

5. The lifting and hoisting device for use in a narrow space according to claim 1, characterized in that: The bottom end of the auxiliary mounting frame (32) is detachably mounted with an arc-shaped support foot (8).

6. The lifting and hoisting device for use in a narrow space according to claim 2, characterized in that: The connecting member (31) includes a first flange (311) and a second flange (312), wherein the first flange (311) is fixedly connected to a nut (42), and a plurality of first threaded holes (313) are formed in an annular array on the first flange (311), and a second threaded hole (314) is formed on the second flange (312) at a position corresponding to the first flange (311), and the first threaded hole (313) and the second threaded hole (314) are threadedly connected by bolts (315) so that the first flange (311) and the second flange (312) fit each other.

7. The lifting and hoisting device for use in a narrow space according to claim 6, characterized in that: The included angle between adjacent first threaded holes (313) is less than 30 degrees.

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