Manual chain pulley

Abstract

The utility model discloses a manual chain pulley, which belongs to the technical field of pulleys and comprises a first side plate and a second side plate, a spline shaft is mounted between the first side plate and the second side plate, auxiliary gears are symmetrically mounted on one side of the first side plate, a main gear is arranged in the middle of the first side plate and meshed with the auxiliary gears, and a hand chain wheel is rotatably mounted on the other side of the first side plate. The hand chain wheel and the main gear are fixedly connected through a fixing shaft, and first rotating shafts are symmetrically installed on the side, close to the first side plate, of the second side plate. According to the manual chain pulley, the first side plate, the second side plate, the spline shaft, the first rotating shaft, the second rotating shaft, the auxiliary gear, the limiting disc, the pulley, the hand chain wheel, the main gear, the driving wheel, the driven wheel, the cleaning brush and the belt are used in cooperation, so that the outer side of the auxiliary gear in linkage can be cleaned in time in the process of manually operating the manual chain pulley; and external dust and impurities are prevented from being adhered in the tooth groove of the auxiliary gear to influence the transmission between the auxiliary gear and the main gear, so that the practicability of the manual chain pulley is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pulley blocks, in particular to a manual chain pulley block. Background Art

[0002] In the current domestic and foreign markets, the single-rail trolleys and chain hoists made of I-beams have free combination type, connection type through a bearing cross beam, and combined design of hoist and trolley. They mainly consist of four parts: a horizontal running system, a vertical lifting system, a braking system, and a speed reduction system. The driving structure is that there is a hoist on each side of the trolley to control the vertical lifting of the object. On the side of the hoist, the hand chain wheel 2 controls the horizontal sliding of the object on the guide rail.

[0003] For example, the utility model disclosed in the patent application No. 201621376563.1 is a low headroom integrated manual single-rail trolley, which is convenient to carry, install, disassemble and assemble. The distance between the two hooks is small, and the hoist and the single-rail trolley share a body, which greatly reduces the cost. And when the hand chain wheel and the gear shaft assembly are removed, the device becomes a low headroom integrated hand-pushed single-rail trolley.

[0004] The similar applications as above still have deficiencies:

[0005] Although the low headroom integrated manual single-rail trolley reduces the cost by sharing a body for the hoist and the single-rail trolley, the part of the trolley in contact with the track does not clean the track and the associated gears in time, resulting in the accumulation of dust and impurities on the associated gears and the track, and even the gear teeth grooves are filled with impurities, making the transmission impossible and the horizontal movement unable to be carried out.

[0006] Therefore, a manual chain pulley block is designed to optimize the above problems. Content of the Utility Model

[0007] The main purpose of the utility model is to provide a manual chain pulley block, which can clean the outside of the associated secondary gear in time during the process of manually operating the manual chain pulley block, avoid the adhesion of external dust and impurities in the tooth grooves of the secondary gear, affect the transmission between the secondary gear and the main gear, and thus improve the practicability of the manual chain pulley block.

[0008] The purpose of the utility model can be achieved by adopting the following technical solutions:

[0009] A manual chain block, comprising a first side plate and a second side plate. A spline shaft is installed between the first side plate and the second side plate. Auxiliary gears are symmetrically installed on one side of the first side plate. A main gear is arranged at the middle position of the first side plate, and the main gear meshes with the auxiliary gears. A hand chain wheel is rotatably installed on the other side of the first side plate, and the hand chain wheel and the main gear are fixedly connected by a fixed shaft. On the side of the second side plate close to the first side plate, rotating shafts I are symmetrically installed. One end of each rotating shaft I is fixed with a limit disc. Pulleys are fixed on the sides of the limit disc and the auxiliary gears close to each other. Driving wheels are fixed on the sides of the auxiliary gears and the limit discs away from each other. On the sides of the first side plate and the second side plate close to each other, rotating shafts II are symmetrically installed. Driven wheels are fixed on the outer sides of the rotating shafts II. A belt is arranged between the driven wheels and the driving wheels. Cleaning brushes are fixed at one end of each rotating shaft II. A hoist assembly is installed on the outer side of the spline shaft.

[0010] Preferably, positioning rods are fixed on one side of each cleaning brush, and brush sleeves are sleeved on the outer sides of the positioning rods.

[0011] Preferably, a support frame is fixed on one side of the first side plate and at the position below the hand chain wheel. One end of the support frame is fixed with a brush plate, and the brush plate is slidably connected with the hand chain wheel.

[0012] Preferably, the support frame is fixedly connected with the brush plate by bolts, and a through hole is formed at the middle position of the brush plate.

[0013] Preferably, protective shells are arranged on the sides of the first side plate and the second side plate close to each other, and movable plates are arranged on the outer sides of the protective shells.

[0014] Preferably, the diameter of the cleaning brush is smaller than that of the brush sleeve, and the thickness of the cleaning brush matches the thickness of the auxiliary gear.

[0015] Preferably, the height of the driven wheel is higher than that of the driving wheel, and the driven wheels are respectively located at both ends of the first side plate and the second side plate.

[0016] The beneficial effects of the present utility model are as follows:

[0017] The manual chain block provided by the present utility model, through the combined use of the first side plate, the second side plate, the spline shaft, the rotating shaft I, the rotating shaft II, the auxiliary gear, the limit disc, the pulley, the hand chain wheel, the main gear, the driving wheel, the driven wheel, the cleaning brush and the belt, can timely clean the outer side of the linked auxiliary gear during the process of manually operating the manual chain block, avoid the adhesion of external dust and impurities in the tooth grooves of the auxiliary gear, affect the transmission between the auxiliary gear and the main gear, and thus improve the practicability of the manual chain block;

[0018] Through the combined use of the positioning rod and the brush sleeve, while the cleaning brush rotates, it drives the positioning rod and the brush sleeve to rotate. The rotation of the brush sleeve cleans both the slide rail and the brush sleeve, reducing impurities and dust on the outside of the slide rail and the brush sleeve, reducing friction damage and jamming caused by dust, improving the smoothness of sliding operation and making it more labor-saving, thus providing convenience for people's use;

[0019] Through the combined use of the support frame and the brush plate, manually pulling the manual chain outside the hand sprocket drives the bracelet wheel to rotate, and the bottom brush plate cleans the bottom of the rotating bracelet wheel, cleaning different positions during the rotation of the bracelet wheel, reducing the adhesion of dust on the outside of the bracelet wheel, thus facilitating the cleaning work of the manual chain pulley. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the front cross-sectional view of the present utility model;

[0021] Figure 2 is the top view of the present utility model;

[0022] Figure 3 is the connection schematic diagram of the positioning rod and the brush sleeve of the present utility model;

[0023] Figure 4 is the front view of the present utility model.

[0024] In the figure: 1, side plate one; 2, side plate two; 3, spline shaft; 4, rotating shaft one; 5, rotating shaft two; 6, sub-gear; 7, limit disc; 8, pulley; 9, bracelet wheel; 10, main gear; 11, driving wheel; 12, driven wheel; 13, cleaning brush; 14, belt; 15, positioning rod; 16, brush sleeve; 17, support frame; 18, brush plate; 19, hoist assembly. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] To make the technical solutions of the present utility model clearer and more definite for those skilled in the art, the present utility model will be further described in detail below in conjunction with the embodiments and the drawings, but the embodiments of the present utility model are not limited thereto.

[0026] Such as Figures 1-4As shown in the figure, this embodiment provides a manual chain hoist, which includes a first side plate 1 and a second side plate 2. On the sides of the first side plate 1 and the second side plate 2 close to each other, protective shells are provided, and movable plates are arranged on the outer sides of the protective shells. The protective shells protect the outer sides of the driving wheel 11 and the driven wheel 12, and the movable plates facilitate the disassembly and assembly of the protective shells. A spline shaft 3 is installed between the first side plate 1 and the second side plate 2. On one side of the first side plate 1, auxiliary gears 6 are symmetrically installed. At the middle position of the first side plate 1, a main gear 10 is provided, and the main gear 10 meshes with the auxiliary gears 6. On the other side of the first side plate 1, a hand chain wheel 9 is rotatably installed, and the hand chain wheel 9 and the main gear 10 are fixedly connected by a fixed shaft. On the side of the second side plate 2 close to the first side plate 1, rotating shafts 4 are symmetrically installed. At one end of the rotating shaft 4, a limit disc 7 is fixed. On the sides of the limit disc 7 and the auxiliary gears 6 close to each other, pulleys 8 are fixed. On the sides of the auxiliary gears 6 and the limit discs 7 away from each other, driving wheels 11 are fixed. On the sides of the first side plate 1 and the second side plate 2 close to each other, rotating shafts 5 are symmetrically installed. On the outer sides of the rotating shafts 5, driven wheels 12 are fixed. The height of the driven wheels 12 is higher than that of the driving wheels 11, and the driven wheels 12 are respectively located at both ends of the first side plate 1 and the second side plate 2, which is conducive to setting a brush sleeve 16 that can contact both the slide rail and the pulley 8 in a sufficient space. A belt 14 is arranged between the driven wheels 12 and the driving wheels 11. At one end of each of the rotating shafts 5, a cleaning brush 13 is fixed. The diameter of the cleaning brush 13 is smaller than that of the brush sleeve 16, and the thickness of the cleaning brush 13 matches the thickness of the auxiliary gear 6. The brush sleeve 16 with a large diameter can better contact the outer side of the pulley 8 and the slide rail, facilitating the cleaning work. A hoist assembly 19 is installed on the outer side of the spline shaft 3.

[0027] Specifically, manually pull the manual chain wound around the outer side of the hand chain wheel 9, so that the hand chain wheel 9 rotates and then drives the main gear 10 to rotate. The main gear 10 then drives the auxiliary gears 6 to rotate. The auxiliary gears 6 simultaneously drive the driving wheels 11 to rotate, drive the driven wheels 12 to rotate through the belt 14, and the driven wheels 12 drive the cleaning brushes 13 to rotate and clean the outer side of the auxiliary gears 6.

[0028] As Figures 1-4 shown, on one side of each of the cleaning brushes 13, a positioning rod 15 is fixed, and a brush sleeve 16 is sleeved on the outer side of the positioning rod 15.

[0029] Specifically, when the cleaning brushes 13 rotate, they drive the positioning rods 15 and the brush sleeves 16 to rotate, and the rotation of the brush sleeves 16 simultaneously cleans the slide rail and the pulley 8, reducing impurities and dust on the outer sides of the slide rail and the brush sleeve 16.

[0030] As Figure 2 and Figure 4As shown, a support frame 17 is fixed on one side of the first side plate 1 and below the bracelet wheel 9. One end of the support frame 17 is fixed with a brush plate 18, and the brush plate 18 is slidably connected to the bracelet wheel 9. The support frame 17 is fixedly connected to the brush plate 18 by bolts. A through hole is provided in the middle position of the brush plate 18. The bolt connection facilitates disassembly, and the setting of the through hole is conducive to the discharge of impurities.

[0031] Specifically, while the bracelet wheel 9 rotates, the brush plate 18 at the bottom cleans the bottom of the rotating bracelet wheel 9, and cleans different positions during the rotation of the bracelet wheel 9, reducing the adhesion of dust on the outside of the bracelet wheel 9.

[0032] As mentioned above, the above are only further embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the scope disclosed by the present invention, according to the technical solution and its concept of the present invention, makes equivalent substitutions or changes, all belong to the protection scope of the present invention.

Claims

1. A manual chain block, characterized in that: It includes side plate one (1) and side plate two (2). A spline shaft (3) is installed between side plate one (1) and side plate two (2). On one side of side plate one (1), auxiliary gears (6) are symmetrically installed. At the middle position of side plate one (1), a main gear (10) is provided, and the main gear (10) meshes with the auxiliary gears (6). On the other side of side plate one (1), a bracelet wheel (9) is rotatably installed, and the bracelet wheel (9) and the main gear (10) are fixedly connected by a fixed shaft. On the side of side plate two (2) close to side plate one (1), rotating shafts one (4) are symmetrically installed. At one end of the rotating shaft one (4), a limiting disc (7) is fixed. On the sides of the limiting disc (7) and the auxiliary gears (6) close to each other, pulleys (8) are fixed. On the sides of the auxiliary gears (6) and the limiting discs (7) away from each other, driving wheels (11) are fixed. On the sides of side plate one (1) and side plate two (2) close to each other, rotating shafts two (5) are symmetrically installed. On the outer sides of the rotating shafts two (5), driven wheels (12) are fixed. A belt (14) is arranged between the driven wheels (12) and the driving wheels (11). At one end of each of the rotating shafts two (5), a cleaning brush (13) is fixed. A gourd assembly (19) is installed on the outer side of the spline shaft (3).

2. The manual chain hoist according to claim 1, characterized in that: On one side of each of the cleaning brushes (13), a positioning rod (15) is fixed. A brush sleeve (16) is sleeved on the outer side of each of the positioning rods (15).

3. A manual chain hoist according to claim 1, characterized in that: On one side of side plate one (1) and at the position below the bracelet wheel (9), a support frame (17) is fixed. At one end of the support frame (17), a brush plate (18) is fixed, and the brush plate (18) is slidably connected to the bracelet wheel (9).

4. A manual chain hoist according to claim 3, characterized in that: The support frame (17) is fixedly connected to the brush plate (18) by bolts. A through hole is opened at the middle position of the brush plate (18).

5. A manual chain hoist according to claim 1, characterized in that: On the sides of side plate one (1) and side plate two (2) close to each other, protective shells are provided, and movable plates are provided on the outer sides of the protective shells.

6. A manual chain hoist according to claim 1, wherein: The diameter of the cleaning brush (13) is smaller than the diameter of the brush sleeve (16), and the thickness of the cleaning brush (13) matches the thickness of the auxiliary gear (6).

7. A manual chain hoist according to claim 1, characterized in that: The height of the driven wheel (12) is higher than the height of the driving wheel (11), and the driven wheels (12) are respectively located at both ends of side plate one (1) and side plate two (2).

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