Drawing device for belt pulley

Abstract

The utility model belongs to the technical field of belt pulleys, and particularly relates to a drawing device for a belt pulley, which comprises a main body frame, a clamping screw rod is arranged on the outer wall of the main body frame, a hand wheel is fixedly connected to the top end of the clamping screw rod, a connecting sliding block is in threaded connection with the outer wall of the clamping screw rod, and a connecting rod is in screwed connection with one end of the connecting sliding block. The bottom end of the connecting rod is rotatably connected with a connecting block slidably connected with the outer wall of the main body frame, the inner wall of the connecting block is rotatably connected with a roller, the connecting block and the connecting sliding block slide to drive the connecting block to slide along the outer wall of the main body frame through the connecting rod, and meanwhile, the connecting block slides to drive the roller to roll along a limiting guide groove in the outer wall of the main body frame; abrasion of the connecting part of the connecting block and the main body frame caused by blocking during sliding of the connecting block is avoided, the connecting block slides to drive the drawing hook to be attached to the machining belt pulley, and rapid clamping operation of the machining belt pulley is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of pulleys, and in particular relates to a pulling device for a pulley. Background Art

[0002] Pulleys are hub-type parts, which are generally relatively large in size. The manufacturing process is generally based on casting and forging. Pulleys are mainly used in situations where power is transmitted over long distances, such as automobiles, mining machinery, mechanical processing equipment, textile machinery, etc. When disassembling the pulley, a pulley pulling device is required to separate the pulley and the shaft.

[0003] For example, the patent with the publication number CN214818284U discloses a pulley pulling device, which relates to the technical field of pulleys, and is designed to solve the problem that the ordinary pulley pulling device in the prior art is easy to damage the pulley shaft. A rotating head is arranged below the main thread column, and the rotating head and the main thread column are arranged as an integral structure. A top head is installed below the rotating head, and the top head is rotatably connected to the rotating head. A second clamping leg is arranged below the rotating head, and the second clamping leg and the rotating head are arranged as an integral structure. The second clamping leg is slidably connected to the rotating head. A main nut is arranged above the main thread column, and the main nut and the main thread column are arranged as an integral structure. A threaded seat is installed on the outer side of the main thread column, and the threaded seat is threadedly connected to the main thread column. A connecting platform is arranged above the threaded seat, and the connecting platform and the threaded seat are arranged as an integral structure. A connecting arm is installed on the outer side of the connecting platform, and the connecting arm is rotatably connected to the connecting platform.

[0004] When the existing pulley pulling device clamps the pulley, the staff needs to knock the pulling hook to fit tightly with the pulley, which makes the outer wall of the pulling hook easily deformed. In view of this, we propose a pulley pulling device. Utility Model Content

[0005] The purpose of the utility model is to provide a pulling device for a pulley in order to solve the above-mentioned technical problems, so as to avoid the problem that the staff need to knock the pulling hook to fit tightly with the pulley, which causes the outer wall of the pulling hook to be easily deformed.

[0006] In view of this, the utility model provides a pulling device for a pulley, comprising a main frame, the outer wall of the main frame is provided with a clamping screw, the top end of the clamping screw is fixedly connected to a hand wheel, the outer wall of the clamping screw is threadedly connected to a connecting slider, one end of the connecting slider is screwed to a connecting rod, the bottom end of the connecting rod is screwed to a connecting block slidably connected to the outer wall of the main frame, the inner wall of the connecting block is screwed to a roller, the outer wall of the main frame is provided with a limiting guide groove rollingly connected to the outer wall of the roller, the bottom end of the connecting block is fixedly connected to a pulling hook, and the side wall of the pulling hook is affixed to a processed pulley;

[0007] A drawing assembly is located on the outer wall of the main frame and is used for the drawing operation of processing the pulley.

[0008] Based on the above structure, the connecting slider slides through the connecting rod to drive the connecting block to slide along the outer wall of the main frame. At the same time, the sliding of the connecting block drives the roller to roll along the limiting guide groove of the outer wall of the main frame to avoid jamming of the connecting block when sliding, which causes wear on the connection part between the connecting block and the main frame. The sliding of the connecting block drives the pulling hook to fit with the processing pulley, thereby realizing the rapid clamping operation of the processing pulley.

[0009] Preferably, two groups of connecting rods are provided, and the connecting block forms a sliding structure with the main frame through the connecting slider and the connecting rod. During operation, the sliding of the connecting slider drives the two groups of connecting rods to slide synchronously, so that the sliding of the connecting slider drives the connecting block to slide along the outer wall of the main frame through the connecting rod, thereby realizing the control operation of the sliding of the connecting block.

[0010] Preferably, the connecting block forms a guiding structure through the roller and the limiting guide groove. When working, the connecting block slides to drive the roller to roll along the limiting guide groove on the outer wall of the main frame, thereby avoiding jamming of the connecting block when sliding, which causes wear on the connecting portion between the connecting block and the main frame.

[0011] Preferably, the pulling hook has a "J" shape, and the pulling hook forms a fitting structure with the processing pulley through a connecting block. During operation, the connecting block slides to drive the pulling hook to fit with the processing pulley, thereby realizing a quick clamping operation on the processing pulley.

[0012] Preferably, the pulling assembly comprises:

[0013] The outer wall of the main frame is located on one side of the clamping screw and is fixedly connected with a threaded block. The internal thread of the threaded block is connected with a working screw. The outer wall of the working screw is screwed with a connecting plate. The bottom end of the connecting plate is fixedly connected with a limiting rod slidably connected to the inner wall of the threaded block. The bottom end of the working screw is screwed with an abutment block. The bottom end of the abutment block is fitted with a shaft body embedded in the inner wall of the processing pulley. When working, the working screw drives the abutment block and the main frame to move relative to each other through the thread in the threaded block, and then the movement of the abutment block drives the shaft body to separate from the processing pulley. At the same time, the movement of the working screw drives the limiting rod to slide along the inner wall of the threaded block through the connecting plate. By setting two sets of limiting rods to slide synchronously, bending of the working screw during movement is avoided, which causes the working screw to be unable to cooperate with the threaded block.

[0014] Preferably, the shaft body forms a telescopic structure with the processing pulley through the working screw and the threaded block, and the working screw is perpendicular to the main frame. When working, the working screw drives the abutment block and the main frame to move relative to each other through the threads in the threaded block, and then the movement of the abutment block drives the shaft body to separate from the processing pulley.

[0015] Preferably, two groups of limit rods are provided, and the limit rods form a telescopic structure through the working screw and the connecting plate and the threaded block. When working, the working screw moves through the connecting plate to drive the limit rod to slide along the inner wall of the threaded block. By setting two groups of limit rods to slide synchronously, bending of the working screw during movement, which causes the working screw to be unable to cooperate with the threaded block, is avoided.

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

[0017] 1. The pulling device for the pulley is provided with a connecting block. The connecting slider slides through the connecting rod to drive the connecting block to slide along the outer wall of the main frame. At the same time, the sliding of the connecting block drives the roller to roll along the limiting guide groove of the outer wall of the main frame to avoid jamming of the connecting block when sliding, which causes wear on the connecting part of the connecting block and the main frame. The sliding of the connecting block drives the pulling hook to fit with the processed pulley, thereby realizing a quick clamping operation on the processed pulley.

[0018] 2. The pulling device for the pulley is provided with a limit rod. The working screw drives the abutment block and the main frame to move relative to each other through the threads in the threaded block, and then the movement of the abutment block drives the shaft body to separate from the processing pulley. At the same time, the movement of the working screw drives the limit rod to slide along the inner wall of the threaded block through the connecting plate. By arranging two sets of limit rods to slide synchronously, the working screw is prevented from bending during movement, which causes the working screw to be unable to cooperate with the threaded block. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the connection block structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the cross-sectional structure of the connection block of the utility model;

[0022] Figure 4 It is a schematic diagram of the cross-sectional structure of the connection between the limit rod and the threaded block of the utility model.

[0023] The symbols in the figure are:

[0024] 1. Main frame; 2. Clamping screw; 3. Hand wheel; 4. Connecting slider; 5. Connecting rod; 6. Connecting block; 7. Roller; 8. Limiting guide groove; 9. Pulling hook; 10. Processing pulley; 11. Threaded block; 12. Working screw; 13. Connecting plate; 14. Limiting rod; 15. Abutment block; 16. Shaft. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1 - Figure 4 This application is described in further detail.

[0026] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0027] The embodiment of the present application discloses a pulley pulling device, comprising a main frame 1, a clamping screw 2 is arranged on the outer wall of the main frame 1, a hand wheel 3 is fixedly connected to the top of the clamping screw 2, a connecting slider 4 is threadedly connected to the outer wall of the clamping screw 2, a connecting rod 5 is screwed to one end of the connecting slider 4, a connecting block 6 which is slidably connected to the outer wall of the main frame 1 is screwed to the bottom end of the connecting rod 5, a roller 7 is screwed to the inner wall of the connecting block 6, a limiting guide groove 8 which is rollingly connected to the outer wall of the roller 7 is opened on the outer wall of the main frame 1, a pulling hook 9 is fixedly connected to the bottom end of the connecting block 6, and a processing pulley 10 is attached to the side wall of the pulling hook 9;

[0028] The drawing assembly is located on the outer wall of the main frame 1 and is used for the drawing operation of processing the pulley 10 .

[0029] Based on the above structure, the connecting slider 4 slides through the connecting rod 5 to drive the connecting block 6 to slide along the outer wall of the main frame 1. At the same time, the connecting block 6 slides to drive the roller 7 to roll along the limiting guide groove 8 on the outer wall of the main frame 1 to avoid jamming of the connecting block 6 when it slides, which causes wear on the connection part between the connecting block 6 and the main frame 1. The sliding of the connecting block 6 drives the pulling hook 9 to fit with the processing pulley 10, thereby realizing a quick clamping operation on the processing pulley 10.

[0030] In one embodiment, two groups of connecting rods 5 are provided, and the connecting block 6 forms a sliding structure with the main frame 1 by connecting the slider 4 and the connecting rods 5 .

[0031] In this embodiment, the connecting slider 4 slides to drive the two groups of connecting rods 5 to slide synchronously, so that the connecting slider 4 slides through the connecting rods 5 to drive the connecting block 6 to slide along the outer wall of the main frame 1, thereby realizing the control operation of the sliding of the connecting block 6.

[0032] In one embodiment, the connecting block 6 forms a guiding structure through the roller 7 and the limiting guide groove 8 .

[0033] In this embodiment, the sliding of the connecting block 6 drives the roller 7 to roll along the limiting guide groove 8 on the outer wall of the main frame 1, so as to avoid jamming of the connecting block 6 when sliding, which may cause wear on the connection part between the connecting block 6 and the main frame 1.

[0034] In one embodiment, the outer shape of the pulling hook 9 is “J”-shaped, and the pulling hook 9 forms a fitting structure with the processing pulley 10 through the connecting block 6 .

[0035] In this embodiment, the connection block 6 slides to drive the drawing hook 9 to fit with the processing pulley 10 , thereby realizing a quick clamping operation on the processing pulley 10 .

[0036] In one embodiment, the pulling assembly includes:

[0037] The threaded block 11 and the outer wall of the main frame 1 are fixedly connected to the threaded block 11 on one side of the clamping screw 2. The internal thread of the threaded block 11 is connected to the working screw 12. The outer wall of the working screw 12 is screwed with a connecting plate 13. The bottom end of the connecting plate 13 is fixedly connected to a limit rod 14 that is slidably connected to the inner wall of the threaded block 11. The bottom end of the working screw 12 is screwed with an abutment block 15. The bottom end of the abutment block 15 is fitted with a shaft 16 that is embedded with the inner wall of the processing pulley 10.

[0038] In this embodiment, the working screw 12 drives the abutment block 15 and the main frame 1 to move relative to each other through the thread in the threaded block 11, and then the movement of the abutment block 15 drives the shaft 16 to separate from the processing pulley 10. At the same time, the working screw 12 moves through the connecting plate 13 to drive the limit rod 14 to slide along the inner wall of the threaded block 11. By setting two sets of limit rods 14 to slide synchronously, the working screw 12 is prevented from bending during movement, which causes the working screw 12 to be unable to cooperate with the threaded block 11.

[0039] In one embodiment, the shaft 16 forms a telescopic structure with the processing pulley 10 through the working screw 12 and the threaded block 11, and the working screw 12 is perpendicular to the main frame 1.

[0040] In this embodiment, the working screw 12 drives the abutment block 15 and the main frame 1 to move relative to each other through the threads in the threaded block 11 , and then the movement of the abutment block 15 drives the shaft 16 to separate from the processing pulley 10 .

[0041] In one embodiment, two groups of limiting rods 14 are provided, and the limiting rods 14 form a telescopic structure with the threaded block 11 through the working screw 12 and the connecting plate 13 .

[0042] In this embodiment, the movement of the working screw 12 drives the limit rod 14 to slide along the inner wall of the threaded block 11 through the connecting plate 13. By setting two sets of limit rods 14 to slide synchronously, the working screw 12 is prevented from bending during movement, which causes the working screw 12 to be unable to cooperate with the threaded block 11.

[0043] When the pulley pulling device of this embodiment is in use, first, the processing pulley 10 is clamped, and the staff rotates the handwheel 3. The rotation of the handwheel 3 drives the connecting slider 4 to slide along the outer wall of the main frame 1 through the clamping screw 2. The sliding of the connecting slider 4 drives the two sets of connecting rods 5 to slide synchronously, so that the connecting slider 4 slides through the connecting rod 5 to drive the connecting block 6 to slide along the outer wall of the main frame 1. At the same time, the sliding of the connecting block 6 drives the roller 7 to roll along the limiting guide groove 8 of the outer wall of the main frame 1 to avoid jamming of the connecting block 6 when sliding, resulting in wear of the connection part between the connecting block 6 and the main frame 1. The sliding of the connecting block 6 drives the pulling hook 9 to fit with the processing pulley 10, thereby realizing the rapid clamping operation of the processing pulley 10.

[0044] Finally, the processing pulley 10 and the shaft 16 are pulled out. The staff rotates the working screw 12, and the working screw 12 drives the abutment block 15 and the main frame 1 to move relative to each other through the thread in the thread block 11, and then the abutment block 15 moves to drive the shaft 16 to separate from the processing pulley 10. At the same time, the working screw 12 moves through the connecting plate 13 to drive the limit rod 14 to slide along the inner wall of the thread block 11. By setting two sets of limit rods 14 to slide synchronously, the working screw 12 is prevented from bending during movement, which makes the working screw 12 unable to cooperate with the thread block 11.

[0045] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A pulling device for a pulley, characterized in that: include: A main frame (1), wherein the outer wall of the main frame (1) is provided with a clamping screw (2), the top end of the clamping screw (2) is fixedly connected to a hand wheel (3), the outer wall of the clamping screw (2) is threadedly connected to a connecting slider (4), one end of the connecting slider (4) is screwed to a connecting rod (5), the bottom end of the connecting rod (5) is screwed to a connecting block (6) slidably connected to the outer wall of the main frame (1), the inner wall of the connecting block (6) is screwed to a roller (7), the outer wall of the main frame (1) is provided with a limiting guide groove (8) rollingly connected to the outer wall of the roller (7), the bottom end of the connecting block (6) is fixedly connected to a pulling hook (9), and the side wall of the pulling hook (9) is fitted with a processing pulley (10); A drawing assembly is located on the outer wall of the main frame (1) and is used for the drawing operation of processing the pulley (10).

2. The pulley pulling device according to claim 1, characterized in that: The connecting rods (5) are provided in two groups, and the connecting block (6) forms a sliding structure with the main frame (1) by connecting the sliding block (4) and the connecting rods (5).

3. The pulley pulling device according to claim 1, characterized in that: The connecting block (6) forms a guiding structure through the roller (7) and the limiting guide groove (8).

4. The pulley pulling device according to claim 1, characterized in that: The pulling hook (9) has a "J" shape, and the pulling hook (9) forms a fitting structure with the processing pulley (10) through the connecting block (6).

5. The pulley pulling device according to claim 1, characterized in that: The pulling assembly comprises: The main body frame (1) comprises a threaded block (11), an outer wall of the main body frame (1) is fixedly connected to a threaded block (11) on one side of the clamping screw (2), the inner thread of the threaded block (11) is connected to a working screw (12), the outer wall of the working screw (12) is screwed with a connecting plate (13), the bottom end of the connecting plate (13) is fixedly connected to a limit rod (14) which is slidably connected to the inner wall of the threaded block (11), the bottom end of the working screw (12) is screwed with an abutment block (15), and the bottom end of the abutment block (15) is fitted with a shaft (16) which is fitted with the inner wall of the processing pulley (10).

6. The pulley pulling device according to claim 5, characterized in that: The shaft body (16) forms a telescopic structure with the processing pulley (10) through the working screw rod (12) and the threaded block (11), and the working screw rod (12) is perpendicular to the main frame (1).

7. The pulley pulling device according to claim 5, characterized in that: The limiting rods (14) are provided in two groups, and the limiting rods (14) form a telescopic structure with the threaded block (11) through the working screw rod (12) and the connecting plate (13).

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