Screw straightening protection device of screw hoist

Abstract

The utility model relates to a screw straightening protection device for a screw hoist, which belongs to the technical field of screw hoists and comprises a mounting base, a straightening protection box is fixedly mounted at the top of the mounting base, a hoist body is fixedly mounted at the top of the straightening protection box, a threaded rod is arranged at the top of the hoist body in a penetrating manner, and the threaded rod is connected with the straightening protection box. Straightening control assemblies are arranged on the four side walls of the straightening protection box, and straightening assemblies are installed in the straightening protection box through the straightening control assemblies. According to the screw straightening protection device for the screw hoist, the straightening assembly is arranged in the straightening protection box, the straightening guide wheels of the straightening assembly make contact with the surface of the threaded rod, the threaded rod is straightened, the threaded rod is kept in a straight rod state before entering the hoist, and the problem that when the borne load is large, the threaded rod cannot be straightened is solved. And the threaded rod is easy to bend and deform, so that the work of the screw hoist is influenced, and the threaded rod is severely blocked.

Description

Technical Field

[0001] The utility model relates to the technical field of screw hoists, in particular to a screw straightening and protecting device for a screw hoist. Background Technique

[0002] A screw hoist is a mechanical device that is directly connected to a gate leaf through a threaded rod or through a guiding slider and a connecting rod, and is widely used for opening and closing gates of engineering projects such as reservoirs, hydropower stations, and irrigation channels. A screw hoist, also known as a screw-type hoist, is a machine that moves up and down through a threaded rod to open and close a gate. It mainly consists of a bracket, a nut, a screw rod, large and small bevel gears, a pressure bearing, a hand crank, etc. There are two types: a screw hoist with both manual and electric functions and a manual screw hoist.

[0003] The bottom end of the threaded rod of the screw hoist is connected to the gate. The screw hoist is driven to work by a hand crank or a motor, driving the threaded rod to move up and down, and driving the gate to open and close, with the characteristics of flexible operation and strong adaptability.

[0004] However, the threaded rod of a common screw hoist is relatively long. When the load is large, the threaded rod is prone to bending deformation, which affects the operation of the screw hoist. In severe cases, the threaded rod will be stuck and the gate cannot be opened and closed normally. In view of this, this application proposes a screw straightening and protecting device for a screw hoist. Content of the Utility Model

[0005] In view of the deficiencies of the prior art, the utility model provides a screw straightening and protecting device for a screw hoist, which has the advantages of straightening the threaded rod during the up and down movement of the threaded rod, etc., and solves the problems that when the load is large, the threaded rod is prone to bending deformation, which affects the operation of the screw hoist, and in severe cases, the threaded rod will be stuck and the gate cannot be opened and closed normally.

[0006] To achieve the above object, the utility model provides the following technical solution: A screw straightening and protecting device for a screw hoist, including a mounting base plate, a straightening and protecting box is fixedly installed on the top of the mounting base plate, a hoist body is fixedly installed on the top of the straightening and protecting box, a threaded rod penetrates through the top of the hoist body, the threaded rod extends below the mounting base plate through the straightening and protecting box, straightening control components are arranged on the four side walls of the straightening and protecting box, and a straightening component is installed inside the straightening and protecting box through the straightening control components;

[0007] The straightening control component includes a fixed sleeve fixedly installed on the inner side wall of the straightening and protecting box, a control screw rod is slidably installed inside the fixed sleeve, a rotating nut threadedly connected to the control screw rod is rotatably installed on one side of the straightening and protecting box, and a straightening component is fixedly installed at one end of the control screw rod located inside the straightening and protecting box;

[0008] The straightening assembly includes a mounting base fixedly installed at one end of the control screw rod. A straightening guide wheel adapted to the threaded rod is rotatably installed inside the mounting base.

[0009] Furthermore, the four straightening control assemblies are grouped in pairs. One group of the straightening control assemblies is respectively installed on the opposite inner side walls of the straightening protection box, and the two groups of the straightening control assemblies are staggeredly installed, one above the other, inside the straightening protection box.

[0010] Furthermore, the four straightening assemblies are grouped in pairs. One group of the straightening assemblies is symmetrically distributed on the surface of the threaded rod. An arc-shaped groove is formed on the surface of the straightening guide wheel.

[0011] Furthermore, an opening and closing control shaft is rotatably installed on the surface of the hoist body. A handwheel fixing rod is fixedly installed at one end of the opening and closing control shaft, and the handwheel fixing rod is an external hexagonal rod.

[0012] Furthermore, a driven belt pulley is fixedly installed at the other end of the opening and closing control shaft, and a control motor is fixedly installed on the top of the mounting base plate.

[0013] Furthermore, a driving belt pulley is fixedly installed at the output end of the control motor, and the driven belt pulley and the driving belt pulley are connected by belt drive.

[0014] Furthermore, a limiting top block is fixedly installed at one end of the threaded rod located at the top of the hoist body. Through holes adapted to the threaded rod are formed at the bottom of the mounting base plate and the top of the straightening protection box.

[0015] Compared with the prior art, the utility model provides a screw straightening protection device for a screw hoist, which has the following beneficial effects:

[0016] The screw straightening protection device for the screw hoist, by arranging a straightening protection box at the top of the hoist body and arranging two groups of straightening control assemblies and straightening assemblies inside the straightening protection box, drives the straightening guide wheel of the straightening assembly to contact the surface of the threaded rod through the straightening control assembly, straightens the threaded rod, so that the threaded rod remains in a straight rod state before entering the hoist, prevents the threaded rod from being stuck inside the hoist after bending, and solves the problem that when the load received is large, the threaded rod is prone to bending deformation, affecting the operation of the screw hoist, and in severe cases, the threaded rod is stuck and the gate cannot be normally opened and closed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the utility model;

[0018] Figure 2 is a front sectional view of the straightening protection box of the utility model;

[0019] Figure 3 This is the top view sectional drawing of the straightening protection box of the present utility model;

[0020] Figure 4 This is the three-dimensional schematic diagram of the straightening protection box of the present utility model.

[0021] In the figure: 1. Installation base plate; 2. Straightening protection box; 3. Hoist body; 4. Threaded rod; 41. Limit top block; 5. Straightening control component; 51. Fixed sleeve; 52. Control lead screw; 53. Rotating nut; 6. Straightening component; 61. Installation base; 62. Straightening guide wheel; 7. Hoisting control shaft; 8. Handwheel fixing rod; 9. Driven pulley; 10. Control motor; 11. Driving pulley; 12. Belt. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] Embodiment 1: Please refer to Figures 1 to 4 , a screw straightening protection device for a screw hoist, including an installation base plate 1, a straightening protection box 2 is fixedly installed on the top of the installation base plate 1, a hoist body 3 is fixedly installed on the top of the straightening protection box 2, a threaded rod 4 penetrates through the top of the hoist body 3, the threaded rod 4 extends below the installation base plate 1 through the straightening protection box 2, straightening control components 5 are arranged on the four side walls of the straightening protection box 2, and a straightening component 6 is installed inside the straightening protection box 2 through the straightening control components 5.

[0024] Among them, the straightening control component 5 includes a fixed sleeve 51 fixedly installed on the inner side wall of the straightening protection box 2, a control lead screw 52 is slidably installed inside the fixed sleeve 51, a rotating nut 53 threadedly connected to the control lead screw 52 is rotatably installed on one side of the straightening protection box 2, and one end of the control lead screw 52 located inside the straightening protection box 2 is fixedly installed with a straightening component 6.

[0025] Secondly, the straightening component 6 includes an installation base 61 fixedly installed at one end of the control lead screw 52, and a straightening guide wheel 62 adapted to the threaded rod 4 is rotatably installed inside the installation base 61. By rotating the rotating nut 53, the control lead screw 52 is driven to slide inside the fixed sleeve 51, driving the straightening guide wheel 62 to approach the threaded rod 4 to straighten the threaded rod 4.

[0026] Meanwhile, the four straightening control components 5 are grouped in pairs. One pair of straightening control components 5 are respectively installed on the two opposite inner side walls of the straightening protection box 2, and the two pairs of straightening control components 5 are staggeredly installed one above the other inside the straightening protection box 2.

[0027] Among them, the four straightening components 6 are grouped in pairs. One pair of straightening components 6 are symmetrically distributed on the surface of the threaded rod 4. An arc-shaped groove is provided on the surface of the straightening guide wheel 62. When the threaded rod 4 moves up and down, it passes between the two straightening guide wheels 62, and the threaded rod 4 is straightened by the two pairs of straightening components 6 one above the other.

[0028] Secondly, a limit top block 41 is fixedly installed at one end of the threaded rod 4 located at the top of the hoist body 3. Through holes adapted to the threaded rod 4 are provided at the bottom of the mounting base plate 1 and the top of the straightening protection box 2.

[0029] Embodiment 2: On the basis of Embodiment 1, an opening and closing control shaft 7 is rotatably installed on the surface of the hoist body 3. A handwheel fixing rod 8 is fixedly installed at one end of the opening and closing control shaft 7, and the handwheel fixing rod 8 is an external hexagonal rod.

[0030] Among them, a driven belt pulley 9 is fixedly installed at the other end of the opening and closing control shaft 7, and a control motor 10 is fixedly installed at the top of the mounting base plate 1.

[0031] Secondly, a driving belt pulley 11 is fixedly installed at the output end of the control motor 10. The driven belt pulley 9 and the driving belt pulley 11 are connected by a belt 12 for transmission. By providing a handwheel fixing rod 8 at one end of the opening and closing control shaft 7 and a driven belt pulley 9 at the other end, when the control motor 10 drives the driving belt pulley 11 to rotate, and the belt 12 drives the driven belt pulley 9 to rotate, the opening and closing control shaft 7 can be driven by the control motor 10 or rotated manually by installing a handwheel.

[0032] When this embodiment is in use, the threaded rod 4 passes through the inside of the straightening protection box 2 and contacts the straightening guide wheel 62 inside the straightening protection box 2. The threaded rod 4 is straightened by the two pairs of straightening guide wheels 62. The straightened threaded rod 4 enters the hoist body 3 to prevent the threaded rod 4 from being stuck inside the hoist body 3 after bending.

[0033] The electrical components mentioned in the text are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device such as a computer for control, and the existing publicly disclosed electrical connection technology will not be elaborated in the text.

[0034] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising said element.

[0035] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A screw straightening protection device for a screw hoist, comprising a mounting base plate (1), characterized in that: A straightening protection box (2) is fixedly mounted on the top of the installation base plate (1), a gate hoist body (3) is fixedly mounted on the top of the straightening protection box (2), a threaded rod (4) is passed through the top of the gate hoist body (3), and the threaded rod (4) extends through the straightening protection box (2) to the bottom of the installation base plate (1), straightening control components (5) are arranged on the four side walls of the straightening protection box (2), and a straightening component (6) is installed inside the straightening protection box (2) through the straightening control component (5); The straightening control assembly (5) comprises a fixed sleeve (51) fixedly mounted on the inner wall of the straightening protection box (2), a control screw (52) being slidably mounted inside the fixed sleeve (51), a rotating nut (53) threadedly connected to the control screw (52) being rotatably mounted on one side of the straightening protection box (2), and a straightening assembly (6) being fixedly mounted on one end of the control screw (52) located inside the straightening protection box (2); The straightening assembly (6) comprises a mounting base (61) fixedly mounted on one end of the control screw rod (52), and a straightening guide wheel (62) adapted to the threaded rod (4) is rotatably mounted inside the mounting base (61).

2. A screw straightening protection device for a screw-type gate hoist according to claim 1, characterized in that: The four straightening control components (5) are arranged in groups of two. One group of straightening control components (5) is respectively installed on two opposite inner side walls of the straightening protection box (2). Two groups of straightening control components (5) are installed inside the straightening protection box (2) in an upper and lower staggered manner.

3. The screw straightening protection device for a screw-type gate hoist according to claim 1 is characterized in that: The four straightening components (6) are arranged in groups of two, and one group of straightening components (6) is symmetrically distributed on the surface of the threaded rod (4), and the surface of the straightening guide wheel (62) is provided with an arc-shaped groove.

4. The screw straightening protection device for a screw-type gate hoist according to claim 1 is characterized in that: An opening and closing control shaft (7) is rotatably mounted on the surface of the gate hoist body (3); a hand wheel fixing rod (8) is fixedly mounted on one end of the opening and closing control shaft (7); and the hand wheel fixing rod (8) is an external hexagonal rod.

5. The screw straightening protection device for a screw-type gate hoist according to claim 4 is characterized in that: A driven pulley (9) is fixedly mounted on the other end of the opening and closing control shaft (7), and a control motor (10) is fixedly mounted on the top of the mounting base plate (1).

6. The screw straightening protection device for a screw-type gate hoist according to claim 5 is characterized in that: A driving pulley 1 (1) is fixedly mounted on the output end of the control motor (10), and the driven pulley (9) and the driving pulley 1 (1) are connected via a belt (12).

7. The screw straightening protection device for a screw-type gate hoist according to claim 1 is characterized in that: A limit top block (41) is fixedly mounted on one end of the threaded rod (4) located at the top of the gate hoist body (3), and through holes matching the threaded rod (4) are provided at the bottom of the mounting base plate (1) and the top of the straightening protection box (2).

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